Renwick v. Pond

20 F. Cas. 536, 10 Blatchf. 39, 5 Fish. Pat. Cas. 569, 1872 U.S. App. LEXIS 1444
CourtU.S. Circuit Court for the District of Southern New York
DecidedJune 8, 1872
StatusPublished
Cited by7 cases

This text of 20 F. Cas. 536 (Renwick v. Pond) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the District of Southern New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Renwick v. Pond, 20 F. Cas. 536, 10 Blatchf. 39, 5 Fish. Pat. Cas. 569, 1872 U.S. App. LEXIS 1444 (circtsdny 1872).

Opinion

BLATCHFORD, District Judge.

This suit is founded on reissued letters patent granted to William C. Hicks, March 1st, 1870, for an “improvement in breech-loading fire-arms.’’ The original patent was granted to Hicks, an inventor, March 10th, 1857, and was reissued to him May 9th, 18G5, and again January ISth, 1S70. On the 27th of February, 1871, the patent was extended for seven years from the 10th of March, 1871. This bill was filed in May, 1870, and is not founded on the extension.

The specification states, that the object of the invention “is, primarily, to extract from the breech of a fire-arm, the cartridge, or the remnant thereof which remains after firing, and. secondarily, to secure the explosion of the percussion primer”; that, to this end, the invention “consists of certain combinations and arrangements of one or more extracting hooks, the reciprocating breech-pin or breech-closer of a fire-arm, and the chamber in the breech of a fire-arm, in which the cartridge is received”; that the invention is “applicable to breech-loading fire-arms of various constructions,” and reference is made, “in order that it may be fully understood,” to a pistol manufactured, at the time of the invention, by the Volcanic Repeating Arms Company, with Hicks’ improvements applied thereto, “said pistol being, in other respects, substantially the same as that described in the patent granted to Horace Smith and D. B. Wesson, the 14tb day of February, A. D. 1854.” The specification then describes, with references to the drawings, the parts of such pistol which are important to an understanding of the invention. The pistol has a barrel constructed to be loaded, at the breech, with a cartridge which has at its butt an internal brass flange, which flange, being elastic, yields when pushed forward by an inclined instrument, and tends to regain its original form when the instrument has passed by it. The powder is in a cavity in the ball. Next the powder is a steel disk, and the percussion primer is placed against such disk and between it and a thin disk of cork. The barrel of the pistol has an enlarged chamber at its rear end, for the reception of the cartridge, the chamber being deep enough to receive within it the entire cartridge, including the flange. The cartridge is pushed into the chamber by means of the breech-pin, operated by a lever which moves the breech-pin and its connections to and fro. The pistol is fired by a hammer, which operates, through the intervention of the breech-pin and its appurtenan[538]*538ces, on the primer in the cartridge. The forward end of the breech-pin carries the extracting hook or hooks. Where two are used, they are side by side, each arranged to act at one side only of the flange of the cartridge, their bills both pointing in the same direction, so that, when the cartridge is withdrawn from the chamber, it may be readily disengaged from the bills of the hooks, by moving the cartridge in the plane of the profiles of the hooks, which could not be readily done if two hooks, when used, were arranged at opposite sides of the cartridge flange, so as to hold the cartridge between them. The specification states, that the application of the extracting hook to the forward end of the breech-pin constitutes no part of the invention, and that the hook is used as the striking instrument, for striking the percussion primer, in addition to performing its function of extracting the cartridge. As the flange of the cartridge used with- the pistol is made of elastic metal, which will yield to permit the hooks to pass by it, they are made rigid by •being formed upon a cylindrical plug or stock, and are connected with the breech-pin by driving said stock into a socket formed in the front end of the breech-pin. As the breech-pin is connected with a lever, the extracting hooks, being connected with the breech-pin, are combined with the said lever, so that, when the lever is turned in one direction, the extracting hooks are moved forward, and, when the lever is moved in the opposite dir-ection, the extracting hooks are withdrawn. Bach extracting hook is so arranged, relatively to the cartridge chamber, that the bill of the hook, when advanced, enters within the periphery of the cartridge chamber, so as to be sure to engage with the flange of the cartridge therein. Each hook, also, is so arranged, relatively to the cartridge chamber, that the bill of the hook, when moved to its most forward position, is in advance of the rear of the space occupied by the cartridge, at least as far as the thickness of the flange thereof, so that the shoulder of the hook may engage with certainty with the forward side of the cartridge flange. When the pistol is to be loaded, the movement of the lever opens the breech, by moving the breech-pin or breech-closer backward, in the longitudinal line of the barrel, or thereabouts, and withdraws the extracting hooks, while the movement of the lever in the opposite direction first impels the cartridge into the chamber of the breech. When, however, the cartridge reaches a shoulder at the front end of the chamber, its forward movement is stopped, and then the continued movement of the lever impels the extracting hooks forward past the edge of the flange of the cartridge, and, as the point of each is inclined, or sloped off, in advance of its shoulder, the bill of the hook readily passes over the edge of the flange, which, being of thin metal, yields to the pressure of the hook. When the shoulder of the hook has passed by the edge of the flange, the latter, being elastic, tends to resume its original position, and the shoulder of the hook engages with the flange, so that, if the lever be then moved to open the breech, the hooks will extract the cartridge, by reason of their engagement with its flange. The first movement of the breech-pin, in opening thq breech of barrel, and its last movement, in closing the breech, take place in the longitudinal line of the barrel, or thereabouts. In the fire-arm before referred to, the construction of the cartridge with a thin flexible flange permits the extracting hook to be rigidly secured to the breech-pin, but that feature is not claimed as a peculiarity of the invention. The construction. of the cartridge, with the primer arranged in its interior, in the line of movement of the point of the extracting hook, after passing the flange, enables the hook to be used as the striking instrument, for transmitting the blow of the hammer to the primer, although such use of the hook does not affect its operation in extracting a cartridge, and is not essential to it. But, the movement of the breech-pin or closing piece longitudinally with the barrel, or thereabouts, at the time of opening and closing the cartridge chamber, is important, and is a distinguishing feature of the invention. The reason why two striking instruments are used, and are an improvement upon one, is stated to be, that, when a single striking instrument is used, the cake of percussion powder forming the primer, being struck at about its centre, frequently splits into parts, and allows the striking instrument to pass forward between the parts, without striking them against the disc-support of the primer, and hence the fire-arm frequently fails to discharge, whereas two striking instruments will hold some portion of the cake between their points, so that it cannot escape, and some portion of it is certain to be struck between the points of the striking instruments and the disc-support, and the fire-arm is sure to fire.

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Cite This Page — Counsel Stack

Bluebook (online)
20 F. Cas. 536, 10 Blatchf. 39, 5 Fish. Pat. Cas. 569, 1872 U.S. App. LEXIS 1444, Counsel Stack Legal Research, https://law.counselstack.com/opinion/renwick-v-pond-circtsdny-1872.