Standard Sanitary Mfg. Co. v. J. D. Mott Iron Works

152 F. 635, 1907 U.S. App. LEXIS 5055
CourtU.S. Circuit Court for the District of New Jersey
DecidedApril 8, 1907
StatusPublished
Cited by4 cases

This text of 152 F. 635 (Standard Sanitary Mfg. Co. v. J. D. Mott Iron Works) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of New Jersey primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Standard Sanitary Mfg. Co. v. J. D. Mott Iron Works, 152 F. 635, 1907 U.S. App. LEXIS 5055 (circtdnj 1907).

Opinion

CROSS, District Judge.

The bill of complaint charges the defendant with infringing a patent issued to one James W. Arrott, Jr., dated September ¾6, 1899, known as No. 633,941, and which by assignment subsequently became, and is now, the property of the complainant. The device covered by the patent is a “dredger for pul-verulent material,” and the patentee, in describing it, says:

“This invention has relation to articles used for sifting and distributing powdered enameling material on the surface of bath tubs and other vessels, commonly known to the trade as ‘dredgers.’ ”

The answer sets up the invalidity of the patent for want of novelty and invention, and also denies infringement.

There are three claims in the patent, all of which it is contended have been infringed. They are as follows:

“(1) A dredger or sifter, consisting of a screen or sieve and a supporting handle, in combination witli a pneumatic agitator attached to the dredger and adapted to vibrate the sieve, substantially as described.
“(2) A dredger or sifter, consisting of a sieve and a handle, in combination with an automatic agitator secured to and carried by the dredger and adapted to agitate or vibrate the same, substantially as described.
“(3) A dredger or sifter, comprising a sieve and handle and an automatic agitator secured thereto, with means for controlling the operation of said agitator, substantially as described.”

This patent was before the Circuit Court for the Westérn District of Pennsylvania, in cross-suits between the patentee and the present complainant, and was therein adjudged to be good and valid in law. It appears from the opinion of Judge Acheson that an alleged prior use of the patented article was considered by him and disallowed. However, he states that the patentability of the improvement was not denied. Arrott v. Standard Sanitary Mfg. Co. (C. C.) 131 Fed. 457. [636]*636The decrees entered in those suits were subsequently affirmed by the Circuit Court of Appeals for the Third Circuit. 135 Fed. 750, 68 C. C. A. 388.

As already indicated, the dredger is used for distributing powdered enamel over cast-iron sanitary ware, while the ware is heated to á red heat. The process may be briefly described as follows: After the casting has been prepared for the enameling, a first coat, commonly called “slush or base,” is applied to the article in liquid form. After this coating has dried, the article is placed in the enameling furnace until the same is burned or fused into the iron, and the casting itself has been raised to a bright red heat. When thus heated, the article, generally a bath tub, is withdrawn from the furnace and placed in a holder or cradle resting upon a table, and the powdered enamel dusted by a dredger over the hot surface of the tub as evenly as possible, until the tub has cooled to.such a degree that it will not readily hold the enamel, whereupon it is reheated, whereby the enamel deposited thereon is fused into a uniform homogeneous layer. The reheated tub is then withdrawn from the furnace and given a second coat of the powdered enamel-, and this operation is repeated as often as is necessary to obtain a smooth and even coating of the enamel. While the casting is resting upon the holder or cradle, it is turned from time to time in different directions and at different angles, in order that the powdered enamel may fall as nearly as may be at right angles to that portion of the surface upon which it is then being distributed. The enamel as used is an extremely fine powder, like ordinary flour in that respect, although considerably heavier. In order that the enameling operation should be completely successful, the powder must be distributed evenly and uniformly over the surface of the tub, and it must be applied as speedily as possible, since the powder will not adhere to the casting when its temperature is lowered beyond a certain degree. Unless the enamel has been evenly distributed over the article, its surface, when finished, will have a lumpy or wavy appearance, which, if glaring, renders the article worthless, and, if barely apparent, makes it what is called a “second”; and an article of that grade is of considerably diminished value. In order to produce an even coating of the, enamel, there must be uniformity and continuity in the flow of the powdered enamel, and under these conditions all that the operator has to do, to insure success, is to move the dredger over the surface to be covered at a uniform rate of movement. On the contrary, when the flow of the enamel from the dredger is not uniform or continuous, an even distribution of the enamel is rendered much more difficult, if not impossible.

The condition of the prior art and the object which the inventor by his patent sought to attain will be stated in his own language:

“The ordinary dredger consists simply of a sieve or other screen of proper mesh having a handle of convenient length by which it is held and manipulated. As the pulverulent material does not freely pass through the sieve or evenly distribute itself spontaneously, it is necessary in dredging to continually agitate the dredger with the hand, or with some instrument held in the hand, by tapping or striking the dredger, hr by striking the dredger against the edge of the article to be enameled. This reriders the labor of dredging or sifting very tiresome ánd slow; and requires considerable skill in manipulating [637]*637the dredger so as to insure an even delivery of the enameling material. The object of this invention is to provide an automatic tapper or agitator, whieli will deliver a succession of rapid blows against the side or end of the dredger, and, while relieving the workman of a great deal of labor, causes the pulveru-lent material or powder to be evenly distributed and to be uniformly discharged. The device which I employ for this purpose is preferably a pneumatic hammer, the piston or plunger of which is elongated and .fitted to the hollow handle of the dredger, so as to reciprocate within the latter and strike the end or side of the dredger with every forward stroke.”

The hand dredger of the prior art consisted of an ordinary tin cup or measure, holding 10 or 12 pounds of the powdered enamel, and having a fine-meshed sieve bottom, a wooden handle 4 or 5 feet long attached to the cup or measure, and a detached beater. The handle of the dredger was ordinarily grasped by the workman with his left hand, the end of the handle projecting back under his elbow for support, and while the dredger was thus supported it was moved around over the surface of the article to be enameled arid its handle constantly beaten above and below by a beater held and operated by the right hand of the workman. This was obviously a somewhat crude and certainly a laborious operation, and it was necessarily performed in immediate proximity to a red-hot tub. Speaking of the labor involved in the use of a hand-tapped dredger, complainant’s manager says:

“The operation of handling a hand-tapping dredger is not only difficult, but laborious, and before a man conld become expert In his work he was compelled to master the knack of depositing the enamel evenly upon tile surface of the casting. It was always necessary to not only have a man of good judgment, but a man of physical strength. The constant tapping-, and standing in front of a hot casting at the same time, was very exhausting.

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Bluebook (online)
152 F. 635, 1907 U.S. App. LEXIS 5055, Counsel Stack Legal Research, https://law.counselstack.com/opinion/standard-sanitary-mfg-co-v-j-d-mott-iron-works-circtdnj-1907.