Cahart v. Austin

4 F. Cas. 997, 2 Cliff. 528

This text of 4 F. Cas. 997 (Cahart v. Austin) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of New Hampshire primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Cahart v. Austin, 4 F. Cas. 997, 2 Cliff. 528 (circtdnh 1865).

Opinion

CLIFFORD, Circuit Justice.

[Suit in this case was brought by the complainants to recover damages of the respondent, for the alleged infringement of certain letters patent. Invention, as described in the patent on which the suit is founded, which, in the second reissue, is for a new and useful improvement in reed musical instruments. Original patent, dated December 2S, 1846, was for a new and useful improvement in bellows for musical instruments, and such [998]*998was the description of the invention as contained in the specification. Patentee is the first-named complainant, and the record shows that he, on June 24, 1856, surrendered the patent, and the samo was reissued to him on an amended specification. General description of the invention in the first reissue is the same as that in the original patent, but the statements of the specification as to the characteristics and objects of the invention are greatly changed. Reason for the surrender and reissue, as alleged in the bill of complaint, was that the original letters patent were inoperative, on account of a defective and insufficient description and specification, arising out of inadvertency and mistake. Second surrender was also made for the same reason; and on August 18, 1857, the patent was reissued to the patentee for a second time. Amendments made to this specification, as appears by the record, were extensive and radical. Term of the patent, as originally granted, was for fourteen years; but the last reissue was, on December 24, 1860, extended by the commissioner for thefur-ther term of seven years from and after the termination of the first term. Title of the complainants was derived from the patentee, and is not the subject of controversy in this suit.]2

The first question presented involves the necessity of a careful examination of the specifications and claims of the several patents to which reference has been made. Specification annexed to the original patent describes the invention, not in the words employed in the patent itself, but as new and useful improvements in the bellows of that class of musical instruments called melo-deons, seraphines, and aeolian attachments. Prior to the invention of the patentee, as he states, in all instruments in which reeds were vibrated by a current or currents of air, the bellows was so constructed as to blow or force the current against the reeds, instead of drawing the current, by an exhausting action of the bellows, as in his method. The defects of the old method are very clearly pointed out in the specification, and it is shown very satisfactorily that these defects produced irregular tones, and of course diminished the value of the instrument. Tones in such instruments are regulated by the force of the current by which they are produced; and the patentee states that the objects of his invention are to produce a constant current of regular force, except when it is required to be increased to produce the swell, and so to arrange the parts as to occupy less room than by the modes heretofore practised. Detailed statement is then given of the means the patentee employs to effect those objects. Referring to that statement, it will be seen that he makes the bellows with two exhausting chambers, constructed, arranged, and operated as therein circumstantially described. Inventor further states, that his invention also consists in making the valves of the flap, by means of a piece or pieces of thin leather or other like material drawn over a hole or series of holes, and that the leather so placed is prevented from flapping when stretched by use, by the means of a strip of india-rubber over the middle of the valve. Particular description is also given of the drawings; and then follows a very elaborate explanation of the invention, which need not oe reproduced. The principal claim of the patent is, “making an exhausting-bellows for reed instruments consisting of two chambers combined with each other and with reeds placed above, so that the chamber next the sounding-board shall be enlarged by weight on the first flap and exhausted by the action of the second flap, substantially as described.” Claim is also made in the patent for the method of making the valves by means of strips of leather or other material having like properties as described in the specification. Such was the description of the invention, as more fully set forth in the original specification; but new matters of very great importance are introduced into the amended specification of the second reissue, on which the suit is founded.

The patentee states, in the outset, that the object of his invention is to improve the tone of the reeds and to impart to them promptness and certainty in responding to the touch of the keys, and at the same time to give a compact and convenient and graceful form to the instrument Radical change is also made in the description of the defects which existed in the instruments constructed prior to his invention. Some parts of the reeds, as the patentee now states, were uniformly found to be slow in speaking, and would often fail entirely, that is, they would either not speak at all or would give their tones out of tune. The sound of the reeds also was disagreeable and nasal, to such a degree, that the instruments could not be extensively introduced. The most radical change, however, is incorporated into the description of the construction and mode of operation of the instrument. The bellows, it is said, operates by exhaustion, and is constructed with two chambers, the one drawing the air from the other, the first having a tendency by weight or springs to expand with a force equal to about seven pounds to the square foot, and the other tending by similar means to close so as to expel the air within it. The upper leaf of the exhaust-chamber is firmly attached to the frame of the instrument, a little below the key-frame. Openings for the reeds are made through that board, and directly over each reed seat is a cap closely fitting upon the reed-board, forming a cell over the reed and reed openings, about the length of the reed. And the statement is, that this case is open at one end of the reed, and is closed at the other, and is in width and in depth about three eighths of [999]*999an inch, but should be slightly increased for the large reeds and diminished for the small ones. Continuing the description, the patentee states that about three inches from the mouth of the reed cells and on the same leaf of the exhaust-chamber, he places a board in a vertical position, which he calls the concentrating-board, and as described, it extends to the ends and top of the instrument, thus forming a narrow chamber, open substantially at the top, but extending the whole length of the reed-board. The emphatic statement of the patentee is, that by the use of these cells on his bellows, the tone of the reeds is greatly improved and their speaking greatly accelerated, and that the concentrating chamber also much increases its richness. Whether new or old, it cannot be doubted that the improvements described may have a tendency to improve the tone and increase its richness; but the difficulty in the case is, that neither of them were described, suggested, or indicated in the specifications or drawings of the original patent. They are not amendments, but interpolations of the baldest and most unmistakable character, unsupported by anything to be found in the original patent, or even in the first reissue, as will more fully appear by attention to the claim of that patent. Undoubtedly the patentee made some advance in the work of expansion when he framed that specification, but the claim of the patent is altogether too narrow to support his present pretensions.

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Bluebook (online)
4 F. Cas. 997, 2 Cliff. 528, Counsel Stack Legal Research, https://law.counselstack.com/opinion/cahart-v-austin-circtdnh-1865.