Shiras, J.
Assuming for the present that Nelson W. Green is entitled to the credit of being the inventor of what is commonly known as the “driven well,” we shall first consider the defense of abandonment; that is to say, the" averment that he allowed the-use of his [389]*389invention to become part of the property of the public, without asserting his right to a patent for the protection of his rights as an inventor.
In the ease of Shaw v. Cooper, 7 Pet. 292, it was held that—
“Yigilance is necessary to entitle an individual to the privileges secured under tlio patent law. It is not enough that he should show his right by invention, but he must secure it in the mode required by law, and if the invention, through fraudulent means, should be made known to the public, he should assert his right immediately and take the necessary steps to legalize it. The patent law was designed for the public benefit, as well as for the benefit of inventors. * * * No matter by what means an invention may be communicated to the public before a patent is obtained, any acquiescence in the public use by an inventor will be an abandonment of his right. If the right were asserted by him who fraudulently obtained it, perhaps no lapse of time could give it validity. But the public stand in an entirely different relation to the inventor. The invention passes into the possession of innocent persons, who have no knowledge of the fraud, and at a considerable expense, perhaps, they appropriate it to their own use. A strict construction of tho act, as it regards the public use of an invention before it is patented, is not only required by its letter and spirit, but also by sound pdlicy. * ' * * The doctrine of presumed acquiescence, where tho public use is known or might be known to the inventor, is the only safe rule which can be adopted on this subject. * * * Whatever may be the intention of the inventor, if he suffers the invention to go into public use through any means whatever, without an immediate assertion of his right, he is not entitled to a patent, nor will a patent obtained under such circumstances protect his right.”
In the case of the Consolidated Fruit-jar Co. v. Wright, 94 U. 3. 96, it is said that—
“ The inventor must comply with the conditions prescribed by law. If he fails to do this he acquires no title, and his invention or discovery, no matter what it may be, is lost to him, and is henceforward no more his than if he had never been in anywise connected with it. It is made, thereupon, as it were by accretion, irrevocably a part of the domain which belongs to the community at large.”
From the evidence in the cause., it appears that in the summer of 1861 Nelson W. Green was a resident of Cortland, New York; that he was engaged in drilling and organizing volunteers for the army, and especially in connection with the seventy-sixth regiment of New York infantry, of which regiment he was appointed colonel; that while thus employed his attention was called to the subject of procuring pure water for the use of his men, and that he set about to devise a means by which water could be readily procured from beneath the surface of the earth, thus avoiding danger from poisoned wells and springs, and also from the risk of being cut off from access [390]*390to the ordinary sources of supply, when in the presence of the enemy. The patentee himself testifies that in the summer of 1861 he had devised, in his own mind, a method of accomplishing this result, which he explained first to his drill squad, and then to the officers of his regiment, and which consisted in driving a rod sharpened at the end into the ground, and into the water-bearing stratum, then withdrawing the same and inserting a tube through which the water could be drawn by any ordinary style of pump. As a test of the method proposed, under the direction of Col. Green, an experiment of driving a rod down to the water was made near his house, and this experiment was followed by driving a well at the fair grounds at Cortland, at the expense and for the use of one Graham, who had the contract for furnishing food and other supplies at the camp, on the fair grounds. This well was driven between the first and fifteenth of October, 1861, and was used generally by the men in camp, aB well as by Graham and his employes.
We further find in the testimony of Col. Green the following:
Question 00. “After this experiment at the house, and the making and use of the well at the fair grounds, what was your opinion as to the practicability of making wells by that process, either for general use or for the purpose of the army, as you had originally intended ?”
Answer. “ The result of the two experiments referred to had upon my mind the effect to convince me of the entire practicability and feasibility of the process for all the purposes named in the question.”
Question 61. “ Did you take any steps, give any orders or directions, for the procurement of material to be taken with your regiment into the field for the purpose of making wells to supply that regiment with water, wherever it might be situated?”
Answer. “I gave Lieut. Mudge orders to procure such material for the purposes named, and gave Adj. Robinson orders to furnish him with transportation for the same, and when at Albany made arrangements with the quartermaster general for the transportation of that material with the regiment when it went to the front.” .
By the testimony of the patentee himself it is shown that the invention claimed by him was perfected in conception in the summer of 1861, and was demonstrated to be a success by practical use in October, 1861; that the patentee caused the necessary apparatus to be procured to be taken with the regiment for its use when it moved to the seat of war, and arranged with the authorities at Albany for the transportation needed therefor.
The testimony of the patentee shows, beyond the possibility of a doubt, that his object and purpose in 1861 was to provide a means of supplying the men under his care with pure water, and protecting [391]*391tbem from tbe clanger to be apprehended from the polluted or poisoned springs and wells, or from being cut off by the enemy from access to the usual sources of supply, and to this end he caused the apparatus to be used in driving wells to be procured, and transportation therefor to be provided.
The sinking of the well at the fair grounds at Cortland, and the providing the means for driving these wells whenever and wherever they might be needed by the regiment, establishes beyond question the intent on the part of Col. Green that this invention should be publicly and commonly used by his regiment at any and all times and places. His own testimony shows that he explained his invention and the means of carrying it into effect, first to his drill squad, and then to the officers of his regiment, and subsequently consented to the sinking and public use of the well at the camp ground, and yet he never cautioned any one to keep the method a secret, nor is it shown that in 1861 he ever mentioned to any one the idea of obtaining a patent, or that he proposed doing so, or that he took any action looking to that end. All that he did tended to spread the knowledge of the mode of making these wells and of the success attending their use, and nothing whatever is shown indicating an intent to restrict the right to make and use the same to himself as a patentee.
It is an admitted fact that Col. Green was a man of intelligence and education, and he must have known what the law required of him, in case he desired to secure his rights as an inventor under the provisions of the patent laws. He knew, then, that to secure his rights, if he desired to procure a patent, he must apply therefor before permitting his invention to pass into general or public use. His own testimony conclusively shows that he gave publicity to his invention, and consented to, nay, aided in making, the use thereof common and public. There is nothing in the evidence showing that he purposed or intended to make further or different experiments, with a view to perfecting his discovery. He himself expressly testified that the experiment at his house, and the driving and use of this well at the camp ground, convinced him of the feasibility of the process in making wells either for general or army use, or, as counsel for complainants, in their brief upon the facts, pages 17 and 18, state it: “The two experiments fully and satisfactorily demonstrated the general practicability of the process, where no rock intervenes.”
The evidence shows conclusively, therefore, that the invention was thought out and was put into satisfactory use, the use being an open [392]*392and public one, while Col. Green’s regiment was in camp at Cortland; and the necessary machinery and tools, with transportation therefor, were provided for continuing the construction and the open and public use of other wells; and yet no step was taken by Col. Green for the procurement of a patent, nor was there at that time any act done, or statement made, indicating a purpose or intent upon his part to apply' for a patent in the future.
It is urged, however, that the reason why an application for a patent was not made at that time was because Col. Green had become involved in serious difficulties on account of the shooting of Capt. McNett, one of the officers of his regiment, on the sixth of December, 1861. If it appeared from the evidence that Col. Green had, in the fall of 1861, taken the initiatory Bteps for the procurement of a patent, or had even unmistakably announced his intention so to do, and it appeared that the accomplishment of such purpose was interrupted by the complications and difficulties arising out of the shooting of Capt.,McNett, it might then be claimed that these difficulties formed an excuse for the long delay in applying for a patent on the part of Col. Green. But it will be borne in mind that the idea of this mode of constructing a well was thought out in the summer of 1861, and the well at the camp ground was sunk before the fifteenth of October, and the shooting of McNett was not until December 6th.
It is also shown by Col. Green, himself that he gave the proper orders for the construction, of the apparatus necessary to be used in sinking wells, and that, when in Albany, he arranged for the transportation thereof with the regiment when it moved to the seat of war. If he thus had time and opportunity enough to provide the means necessary to furnish these wells for the common and public use of his regiment, can it be fairly claimed that he did not have time and opportunity to at least announce his purpose of procuring a patent, if such was then his intent ?
It would seem that the utmost that can be said of the effect of the difficulties resulting to Col. Green from the shooting of Capt. McNett is, that thereafter his attention was so fully occupied thereby that he gave no further thought to the subject of driven wells at that time; and hence did not, in his own mind, reach the conclusion that he would apply for a patent, until several years had elapsed and these difficulties had begun to pass away, and until it was brought to his attention that, through the use of this mode of.driving wells, other parties had reaped large pecuniary benefits. But during this delay, extending to May, 1866, a period of over four years, the public had [393]*393acquired rights through the open and uninterrupted use of the discovery. What the causes were that led to this long silence on the part of Col. Green are not so material as the fact itself that he made public the knowledge and use of his invention, and then for over four years remained wholly silent, and took no action for the procurement of a patent. Can there be any question that Col. Green did permit his invention to go into public use without an immediate assertion of his rights ?
In Egbert v. Lippmann, 104 U. S. 333, it was held that “to constitute the public use of an invention it is not necessary that more than one of the patented articles should be publicly used,” it being also held in the same case that “if an inventor, having made his device, gives or sells it to another, to be used by the donee or vendee, without limitation or restriction, or injunction of secrecy, and it is so used, such use is public, even though the use and knowledge of the uso may be confined to one person.”
It is not questioned that the well at the camp ground was made with the knowledge and consent of Col. Green. It was for a public use, being constructed at the expense of the sutler, Graham, for the purpose of supplying water for use in the cook rooms, as well as for general use by all connected with the regiment. There was no effort made to keep the mode of its construction secret, but rather the contrary. When the regiment left Cortland, New York, Col. Green exercised no control over this well, nor did he cause it to be taken up or otherwise kept from public use or knowledge. If he was the inventor of that description of well he certainly gave to Graham the full right to construct and use the well, and to permit its use by others, without any limitation whatever, or any injunction of secrecy, thus bringing the case within the rule laid down in Egbert v. Lippmann, even if there were no further facts showing acquiescence in the public use of the invention. But these facts are not wanting, for it is proven by Col. Green himself that he caused the necessary tools and pipes to be procured for the use of the regiment when it went to the front, showing clearly that he proposed and intended to permit any number of wells to be sunk and used that might be needed by the regiment, thus showing that he contemplated a continuous public use of-the invention, without restriction or limitation.
Again, the evidence shows that a large number of driven wells were made and used in and about Cortland and neighboring places during the years 1862, 1863, 1864, and 1865. It is now claimed that Col. Green had not actual knowledge of the existence of these wells; but [394]*394was be not bound to know that the natural result of what he himself had done, and had caused to be done, in the way of giving publicity to the success which attended this mode of making wells, would be to spread their use by the public, unless he promptly prevented such result by procuring a patent ? and can he now be heard to say that he did not know, nor have reason to know, that the use of these wells was becoming common in his own neighborhood, when the facts show that such use was the natural result of his own acts ? But we are not left to mere inference upon this question, as there is testimony showing satisfactorily that he had knowledge of the existence of a portion, at least, of these wells; and, despite his own testimony, wherein he endeavors to destroy the weight of this evidence, either by direct denial or by claiming that he did not in fact recognize certain wells which came under his notice to be driven wells, yet we think the preponderance of evidence is against him on this proposition, and that it must be held that he knew that such wells were being made and used.
We find, therefore, as conclusions of fact,—
(1) That in 1861 Col. Green’s purpose in devising his method of driving wells was to furnish a ready means whereby the men of his regiment could 'procure a supply of pure water, and that he did not at that time contemplate procuring a patent therefor, and that he put his method of driving wells into public use in 1861 for the benefit of his regiment, and thereby dedicated or abandoned his invention to the public.
(2) That his invention was in open and public use, with his knowledge and acquiescence, for more than four years before he applied for a patent thereon.
From these conclusions of fact it necessarily follows that the letters patent originally granted, and the reissued letters based thereon, must be held invalid and void.
2. It is also urged on behalf of defendants that the reissued patent enlarges the scope of the original patent, is broader in its terms, including improvements and principles not contained in the original specifications, and is therefore void. This defense demands an examination and determination of what Col. Green’s original invention consisted, and of what is embraced within and covered by the reissued patent. We will consider the latter proposition before proceeding to the former. William D. Andrews, one of the complainants, in giving his testimony, is asked whether he has read and understands the reissued patent, and, if so, to describe it, which he .does in the following language:
[395]*395“The invention is for a method of procuring water from the earth by means of a tube inserted into the earth down to and into a water-bearing stratum, and attaching to such tube, in cases where the water does not flow naturally, a pump by an air-tight connection, and by the operation of the pump producing a vacuum within the tube which forms the body of the well and its lining, thereby causing the water in the surrounding earth, under the pressure of the atmosphere, to rush into the -well formed by the tube, and furnishing a practically inexhaustible supply of water, by the means as stated and described.”
In the opinion of Judge Benedict in the Carman Case, cited at length by complainants, it is stated that “the novelty consists in making the well-pit to consist of the tube of a pump connected tightly with the earth. This is accomplished by driving into the earth the tube to be used as a tube of a pump and at the same time as the pit of the well. This manner of inserting the tube renders it possible, by means of a pump attached to the tube, to create a vacuum in the pit of the well, and at the same time in the water-bearing stratum of the earth.”
In the printed argument of counsel for complainants it is said that “the drive-well invented by Col. Green left no open space between the lining and the suction pipe, and is based upon the principle that if a vacuum is formed in the earth at the ordinary depths by the action of the suction pump, the atmospheric pressure communicated through the earth to the water will cause it to respond to the vacuum produced within the well, whose lining is itself the suction pipe of the well, and perfectly air-tight, the earth serving as a filter. ”
It is not necessary to extend these quotations to show that the principle which it is claimed constitutes the discovery or invention of Col. Green, as described in the reissued patent, is that the production of a vacuum in the earth by means of an air-tight tube driven into the earth, to which is attached a suction pump, will greatly increase the supply of water.
To produce this vacuum it is necessary that the tube forming the lining of the well should be in such close contact with the surrounding earth as to be air-tight; and it is claimed that driving the tube into the ground, whether with or without originally perforating the earth with a rod, constitutes a mode of constructing a well which practically results in producing a well whose lining — to-wit, the tube — is in air-tight connection with the earth. In other words, in order to successfully apply the principle, it is absolutely essential that the tube forming the lining of the well should be in such close contact with the earth that the air cannot pass down around the out[396]*396side of the tube, and the pump used in drawing up the water must also be attached to the end of the tube by an air-tight connection. Unless both of these conditions are fulfilled it is impossible to create a vacuum in the tube, and about the portion of it inserted in the water-bearing stratum; and as the creation of this vacuum is the essential and only means of applying the principle which it is claimed constitutes the chief merit of Col. Green’s invention or discovery, it follows that in order to protect such a discovery by a patent it must be included within the specifications. This may be done by either a proper description of the result to be obtained, with the mode or means to be employed in producing the same, or by simply describing the means employed to accomplish the result; that is to say, it would be sufficient if it was stated that, by the use of certain prescribed means, a vacuum in and about the tube would be created, and thereby the supply of water would be increased, or if it was stated that. the tubing of the well was so driven as to be made airtight by' contact with the surrounding earth, and the pump to be used was affixed to the tube' by an air-tight connection. In the latter case the result reached or the principle put into operation would not be described; but as the means described must necessarily produce the result, or apply the principle, it is held sufficient to describe the means employed, without specifying the principle which is thereby brought into play. Indeed, it is not necessary that the inventor, to be entitled to a patent, should himself understand the abstract principle which his invention brings into use. It is sufficient if he is the inventor of a means whereby a new and useful application of the abstract principle is brought about. Still, as already remarked, it 'is necessary that in the patent and specifications the new and useful application of the principle must be described, either by setting forth the result obtained, with the means of its accomplishment, or else by such a description of the means employed as will, if followed, necessarily produce a result which embodies the practical application of the principle involved.
Let us now examine the specifications originally filed by Col. Green, and see whether there is embraced therein the application of the principle of utilizing atmospheric pressure through the creation of a vacuum in the tube, and the earth surrounding it, where it penetrates the w&ter-bearing stratum. The description of the invention is set forth in the following language:
“My invention consists in driving or forcing an iron or a wooden rod with a steel or iron point into the earth until it is projected to or into the water, [397]*397and then withdrawing the said rod and inserting in its place a tube of metal or wood to the same depth, through which and from which the water mas be drawn by any of the usual well-known forms of pumps.”
Finally, in setting forth his claim, he does so in the following terms:
“Having thus fully described my invention, what I claim and desire to secure by letters patent is the herein-described process of sinking wells where no rock is to be penetrated, viz., by driving or forcing down a rod to and into the water under ground, and withdrawing it and inserting a tube in its place to draw the water through, substantially as herein described.”
It certainly cannát be successfully claimed that in these statements it is set forth in express terms that the principle to be utilized is the atmospheric pressure forcing the water to and into the tube through the agency of a vacuum created in the tube and in the earth at the lower end of the tube, where it penetrates the water-bearing stratum. There is not to be found in any part of the specifications any reference to a vacuum, either in or out of the tube, nor any mention of atmospheric pressure created thereby. If the application of this principle formed the material and all-important part of Col. Green’s invention in 1861, as is now claimed in argument, he certainly failed to set it forth in express terms in his specifications forming part of the original patent; nor can it be inferred from the description of the means to be employed that he then proposed to create a vacuum by making the well lining air-tight, and by attaching a pump thereto by an air-tight connection. He describes a driving rod, having a swell thereon, which is to be driven into the ground' and then withdrawn, and a tube of a diameter- somewhat smaller than the diameter of the swell of the drill rod is to be inserted in the hole thus made. In no part of the description is it said, either expressly or by fair implication, that the tube, when inserted, must fit so closely into the opening made by the rod that no air can pass down on the outside of the tube to the water, nor is it stated that the pump must be attached by au air-tight connection to the top of the tube. A person can follow with exactness all the instructions therein given, and yet it would not necessarily follow that he had excluded the air from the lining of the well, or from the water-bearing stratum at the place where the tube penetrated the same. In other words, the description of the means to be employed, as set forth in these specifications, does not show.that one of the results arrived at is to render the lining of the well air-tight, and to have attached thereto a pump by an airtight connection. The description of the means to be employed can he 'carried out in practice without making an air-tight lining or tube, [398]*398and hence -without forming' a vacuum around the bottom of the tube or in it. This being true, it follows that it cannot, from the description of the means employed, be inferred that Col. Green then intended -to claim, as part of his discovery or invention, the application of the principle that by creating, a vacuum in and about the tube, the same having been made air-tight, the flow of water would be largely increased. He did not claim it in express words, and the description of his invention, and the'means to be used in carrying the same into practical use,- fail to show that such was the main or even a neces- , sary part of his invention. ' '
In our judgment his invention or discovery is fully and fairly described in the language of his own claim, to-wit:
“What I claim and desire to secure by letters patent is the herein-described process of sinking wells where no rock is to be penetrated, viz., by driving or forcing down a rod to and- ipto the water under ground, and withdrawing it and inserting a tube in its place to draw the water through.”
What he sought to accomplish was to devise a rapid, easy, and feasible means of reaching an underground supply of water in such a mode that any ordinary pump could be applied to bring it to the surface, and his plan was to drive down a rod into the water, withdraw it, and then insert a tube, through which the water could be drawn -by any ordinary kind of pump. In our judgment the evidence intro- duced by complainants shows that this was all that Col. Green sought to do in 1861, and that in making his experiments at that time he did not contemplate or conceive óf the idea that the tube should be made air-tight so as to create a vacuum in it and about it,.and thereby utilize the atmospheric pressure. Hence it is that in the specifications attached t.o the original patent no mention is made of atmospheric pressure, or of a vacuum in and about the tube, nor is it stated, in describing the means to be employed in making the wells, that the tube must be air-tight in its connection with the surrounding earth, or that the pump must be attached thereto.
It is inexplicable, if it was intended to embrace in the original patent the operation of atmospheric pressure in the earth, through the creation of a 'vacuum, which is now claimed to constitute the chief features and merit of the driven well, that the specifications contain no reference thereto, either expressly or even by fair implication.
We conclude, therefore, that the original patent cannot.be so construed as to embrace the application of this principle.
Turning now to the specifications of the reissued, patents, what do we find? In the'first place, it is stated “that the hole or opening is [399]*399made by the mere displacement of the earth, which is packed around the instrument, and not removed upward from the hole, as it is in boring.” And it is further said that “I prefer to employ a pointed rod, which,«after having been driven or forced down until it reaches the water, I withdraw, and replace with a tube made air-tight throughout its length, except at or near its lower end.” And further, “I attach to the tube by an air-tight connection any known form of pump.” In these portions of the specifications we find it provided that the earth must be packed around the tube forming the lining of the well; that this tube must be air-tight throughout its length, except at or near ■ the lower end, which penetrates the water, and the pump used therewith must have an air-tight connection with the tube. Under these specifications it is claimed by complainants that the main feature of the discovery consists in the utilization of the atmospheric pressure , through the creation of the vacuum in and about the tube. (See questions 11 and 12, testimony of William D. Andrews, pp. 210, 211, vol* 1, of complainant’s record.) Giving these specifications the constructions which complainants put thereon, it follows that the reissued patent covers (1) the process of sinking wells by forcing down a rod or tube to the water-bearing stratum without removing the earth upwards, as in boring or digging; (2) creating a vacuum in the tube forming the lining of the well, by making the tube air-tight except at the lower end, compacting the earth around- the tube, and by attaching a pump with an air-tight connection to the tube.
In the argument of counsel, as well as in the testimony of complainants, it is urged that the great merit of Gol. Green’s invention consists of the discovery of the effect of the vacuum thus created. According to the view we take of the original patent, it did not cover or describe the application of this principle. It follows, therefore, that the reissue embraces the application of an important and material principle, not found in the original.
- The rule is well settled that a reissue can be validly granted only for the same invention which was originally patented. If the reissue goes beyond this, and covers other and different inventions or improvements suggested by the use of the original invention, it will be void. See Burr v. Duryee, 1 Wall. 531; Manuf’g Co. v. Ladd, 102 U. S. 408; Miller v. Brass Co. 104 U. S. 350; James v. Campbell, Id. 356; Manuf’g Co. v. Corbin, 103 U. S. 786.
As we view the evidence in this case, we find that Col. Green in his original invention did not embrace the idea of creating a vacuum in the lining of the well for the purpose of utilizing the pressure of [400]*400the atmosphere, nor did his original patent, either expressly or impliedly, e.over or describe the-application of this principle; that this idea of utilizing the atmospheric pressure was an after-thought on the part of complainants; that to protect it as a part of Col. Green's invention it was'evidently necessary that .the-specifications should be enlarged; that the reissue was obtained for the purpose of covering, thereby this idea of atmospheric pressure caused by a vacuum in an air-tight tube; that the complainant now claims that the chief merit of the invention consists in creating. a vacuum in the tube and the earth surrounding it, where it penetrates the water-bearing stratum, and, through the pressure of the atmosphere, forcing a larger and more continuous supply of water into the tube forming the lining of the well, and that the application of this principle is provided for and embraced within the specifications of the reissued letters . patent. Giving these specifications the construction claimed therefor by complainants, it follows, in our judgment, that the reissue departs widely from the original, and embraces the application of a principle not covered by the original invention of Col. Green, and consequently that the reissued patent must be held void. In determining this question of the validity of the reissued letters patent, we have assumed that the construction put thereon by complainants and their counsel is legally correct, to-wit, that there is embraced therein the principle of utilizing atmospheric pressure by creating a vacuum in the tube, and about the same where it penetrates the water-bearing stratum. We have also assumed, without questioning it, that the theory of complainants in regard to the creation of a vacuum about the tube, and its effect in increasing the flow of water into the tube through the pressure of the atmosphere up'on the other portions of the water-bearing stratum, is correct. In the view we have taken of the case, it has not been necessary to investigate fully the scientific points involved in the latter proposition, but we will only say that the experiments made before the court, and the evidence adduced on this * question in physical science, have not fully demonstrated to our satisfaction the correctness of the theory relied upon by complainants.
3. Upon the issue of originality of invention by Col. Green a large amount of evidence has been adduced, with a view of showing that this method of sinking wells had been substantially described in various publications antedating Col. Green’s discovery, and also that wells'had been sunken by this method at different times and places. We do not deem it necessary to specially mention more than'two of these alleged • prior discoveries. While it. cannot -well be questioned [401]*401that it is shown that in some of the other instances a near approach was madq, to the method subsequently adopted by Col. Green, yet we do not think it can be said that these isolated instances were anything more than mere experiments, not developed to an extent sufficient to enable the court to say that they clearly anticipated Col. Green’s discovery. There are two instances, however, which cannot be so summarily disposed of, these being: First, the well at Independence, Iowa; and, second, the wells driven at Milwaukee, Wisconsin, by E. W. Purdy.
In regard to the well at Independence, the query is whether it was in fact constructed in 1861, as claimed by defendants, or in 1866, as averred by complainants. The defendants claim that there were two wells driven at Independence, — one in the early summer of 1861, the other in 1866, — while the complainants aver that there was but one well, i. e., the one driven in 1866, and that the witnesses who place it in 1861 are simply mistaken in the date. In several of the cases heretofore heard, touching the validity of Col. Green’s patent, the question in regard to this Independence well has been presented, and it has been therein held that the conflict in the testimony was to be reconciled by holding that the witnesses for the defendants, while testifying truthfully to the existence and character of this well, had mistaken the date, and placed an event in 1861 which really took place in 1866. If the evidence submitted to us was substantially the same as that submitted in the cases referred to, we should not feel disposed to re-examine the question at issue, but we have had presented to us much additional evidence largely intended to prove the date of the-driving of the well in question, by proving the date of other facts which are so connected with the existence of the well that proof of the date of the former unmistakably fixes the time when this well was driven and in use. Thus a number of witnesses who probably could not by a mere effort of memory fix the month or the year when they saw and used the well, testify to facts which corroborate their recollection that they saw and used this well when the soldiers wore enlisting at Independence and forming companies commanded by Capts. Loe and Ilord, for the purpose of entering the Union army. That these companies were organized at Independence in the year 1861 is a fact beyond dispute. So with other facts, the date of which is not open to question, such as the time when Sherwood and Kimball kept the hotel at Independence, the date of Col. Lake’s marriage, the use of the well by the cricket club when playing cricket [402]*402upon the grounds adjoining the lot where the "well was driven, and which club was broken up by a number of its members entering the army in 1861. By such facts as these the defendants have greatly strengthened • their position in regard to this well at Independence, and while it cannot be doubted that there is much plausibility in the argument urged against the reliability of this evidence, still it seems to us that the preponderance of the evidence upon this question is with the defendant, and that it must be held as a conclusion of fact (1) that in the early part of the summer of 1861. there was constructed at Independence, Iowa, a driven well which proved a success; (2) that this well was constructed by driving a tube down into the water-bearing stratum, and attaching to the tube a pump by which the water was drawn up through the tube in apparently an inexhaustible quantity.
It does not appear, however, that any other wells came into use by reason of the driving of the one under consideration, and if the decision of the court depended solely upon the effect to be given to the driving of this one well, we might well doubt whether it would not be proper to treat it as a mere isolated experiment, which would not be held to defeat the rights-of an independent inventor. In regard to what may be called the Milwaukee wells, it is shown by the testimony of E. W. Purdy- that in 1849 and 1850 he was in the business of making wells at Milwaukee, Wisconsin; that he used iroD rods about two inches in diameter, and made so they could be coupled together. The first rod was about 16 feet long, the lower end being in shape of a drill. This rod was worked.up and down by a rope running over a gin-pole, the rod being raised up and down, and in that way the earth wa.s displaced by the rod as it went down. Tubing of about four inches in diameter was driven down as the rod progressed. This tube formed the lining of the well. No earth was removed upwards, except .in case of striking quicksand, when a long sheet-iron bucket, with a valve in the bottom, was used to bring up the quicksand. When the'tube had been forced down into the water, if the water did not come to-the surface a pump was used, the tube to which the pump was attached being placed inside the tube first forced down, the latter forming the lining of the well. It is shown by the testimony of Purdy-that he drove a large number of these wells, and the places where and the parties for whom they were driven are given in several instances. In some cases the wells were driven to the depth of 60 and 100 feet. In these wells thus driven there was [403]*403used — First, a rod for puncturing the earth, which was driven down to the water-bearing stratum; second, into the aperture thus made a tube was forced, which was in close contact with the earth and which formed the lining of the well, and through which the water either flowed naturally, or was drawn by the aid of a pump inserted therein. Comparing this method of driving wells and its results with that adopted by Col. Green in 1861 and described in the specifications attached to the original letters patent, we confess our inability to see any substantial difference. What he expressly claimed in his original specifications was the process of sinking wells by driving or forcing down a rod to and into the water under ground, and withdrawing it, and inserting a tube in its place to draw the water through, and it is just this process in substance that was employed in Milwaukee.
These wells driven at Milwaukee cannot be set aside as abandoned experiments. Purdy testifies that he was engaged in sinking them as a regular business. Numbers were put into practical use. This testimony remains uncontradicted, and it is not claimed that these wells are a myth. If, then, it be true that in 1849 and 1850 wells were driven at Milwaukee by a process not distinguishable from that devised by Col, Green in 1861, and these wells were driven, not as mere experiments, nor for the purpose of exhibition, but for public and continuous use, and from aught now shown may be in use to-day, can any other conclusion be reached than that Col. Green was not the original or first inventor of the process of driving wells described in his specifications? In our judgment the method pursued in sinking these wells at Milwaukee is the same in substance as that devised by Col. Green, differing only in minor particulars, and hence it follows that Col. Green’s process for driving wells was only a reproduction of a method which had been devised and put to practical public use fully ten years before Col. Green hit upon the same expedient. If this be true, then it necessarily results that the defense of want of novelty must be sustained.
The conclusions we have reached upon the points already discussed, render it unnecessary to consider the other questions, including that of infringement, which are presented in the record. Under the view we have taken of the case it follows that complainants’ bill must be dismissed, with costs, and it is so ordered. .