Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1461 A
Publication typeGrant
Publication dateDec 31, 1839
Publication numberUS 1461 A, US 1461A, US-A-1461, US1461 A, US1461A
InventorsSilas Day
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in fire-arms
US 1461 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Breech-Loading Fire-Arm.

Patented Dec. 31, 1839.



. stock, lock, and percussion-hammer.


Specification forming part of Letters Patent No. 1,461, dated December 31, 1839.

To all whom it may concern:

Be it known that we, SILAS DAY and SAM- UEL HALL, have invented a new and useful Improvement in Fire-Arms; and we do hereby-declare that the following is a full and exact description.

The name of this invention is Days Improved Gun-Breech.

The nature of it consists in inserting an extra breech or charged chamber into the open breech of the gun and securing it in its place by turning down a projection into a notch.

To enable others skilled in the business to make and use our invention, we proceed to describe its construction and operation, reference being had to the drawings hereunto annexed and making part of this specification.

It resembles a common gun in its barrel, The breech is open, so that one may see through from end to end. There is an enlargement in the barrel at the breech end (see Fig. 5) made to receive the extra breech or charged chamber. There is a recess, f, back of the barrel, which admits the extra breech A into it. It is rounded or hollowed out at the bottom, and has a notch on the percussion side, into which the projection d of the extra breech is thrust to hold it secure while fired. It is also deepened at the bottom, so that the notch extends in as far as the center of the barrel at the bottom.

The extra breech, Figures 6, 7, and 8 of the draft: This is a small piece with a powderand-ball chamber in it about an inch and a quarter in depth. The outer edge of the bore is enlarged or countersunk, so that the ball when pressed in will remain firm. The other end has a shoulder about an eighth of an inch larger all round. This shoulder extends about half an inch, or but three-eighths back. On one side of this shoulder is a projection, d, about half an inch, in which is inserted the cone for the cap on the back part near the top. There is also a knob, 22, on this projection, to serve as a handle to place it in the notch.. This notch e is made deep in the bottom of the recess, and the projection of the extra breech must be made to fit it. The use of the notch is to hold in firm the charged chamber or extra breech A when fired, the percussion-cap being brought in the right position for the hammer by turning down the projection into the notch. The use of the shoulder is to prevent the escape of fire or smoke backward. The use of the countersink or enlargement at the outer end of the extra breech (see Fig. 7) is, by entering into a circular groove, n, in the enlargement of the barrel, to prevent the escape of fire and smoke, and also to hold the ball secure when the extra breech is charged and put into the cartridge-box. at bottom (see Fig. 2) of the shape of the stock with a screw, E, by which it is attached to the break-off k.

The following is a more minute description by immediate reference to the drawings:

Fig. 1, a perspective View of a part of the gun; Fig. 2, a view of the barrel with the extra breech inserted. Fig. 3 shows the screw by which the barrel is attached to the breakoff; Fig. 4, top View of the barrel and recess;

Fig. 5, a longitudinal section of the barrel; Fig; 6, view of theextra breech; Fig. 7,1ongitudinal section of the same; Fig. 8, the extra breech seen at the muzzle; Fig. 9, part of the barrel and stock, showing the notch in perspective.

The same letters refer to the same things in all the drawings. a

A is the extra breech; a, the shoulder; d, the projection; c, the cone for the percussioncap; I), the knob; B, the barrel; 0, the stock; D, the projection upon the bottom of the barrel of the shape of the stock; E, the screw by which it is attached to the break-off k,- e, the notch; F, the hammer of the lock; f, the recess; G, the stock back of the lock; g, the enlargement of the barrel to admit the extra breech; h, the bore of the barrel; k, the break-off; m, the bore of the extra breech; n, the circular groove in the fore part of the enlargement of the barrel.

Operation: The extra breech is first charged with a due quantity of powder. Then when shot are used a cut wad is put upon it. When a ball is used it may be put in with or without patching. The ball being crowded firmly in will remain safely in its position. This extra breech thus charged is put into the open breech of the gun through the recess f. and the projection and knob d and I) turned down into the notch. The percussion-cap having been previously put on, it is now ready to be discharged. A quantity of the extra chambers A being The barrel has a projection, D,

ready charged and in a cartridge-box, as soon as one is fired it is removed and another put in its place, an operation that requires but a few seconds. v

That We claim as our invention, and desire to secure by Letters Patent, is-

The method of retaining the extra breech in its place in the barrel by means of the projection on the extra breech, to which is attached the nipple fitting into a corresponding recess SILAS DAY. SAMUEL HALL.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7134381Aug 19, 2004Nov 14, 2006Nissan Motor Co., Ltd.Refrigerant compressor and friction control process therefor
US7146956Aug 6, 2004Dec 12, 2006Nissan Motor Co., Ltd.Valve train for internal combustion engine
US7228786May 13, 2004Jun 12, 2007Nissan Motor Co., Ltd.Engine piston-pin sliding structure
US7255083May 2, 2005Aug 14, 2007Nissan Motor Co., Ltd.Sliding structure for automotive engine
US7273655Jan 12, 2005Sep 25, 2007Shojiro MiyakeSlidably movable member and method of producing same
US7284525Aug 10, 2004Oct 23, 2007Nissan Motor Co., Ltd.Structure for connecting piston to crankshaft
US7318514Aug 19, 2004Jan 15, 2008Nissan Motor Co., Ltd.Low-friction sliding member in transmission, and transmission oil therefor
US7322749May 6, 2005Jan 29, 2008Nissan Motor Co., Ltd.Low-friction sliding mechanism
US7406940May 21, 2004Aug 5, 2008Nissan Motor Co., Ltd.Piston for internal combustion engine
US7427162May 26, 2004Sep 23, 2008Nissan Motor Co., Ltd.Rolling element
US7458585Aug 6, 2004Dec 2, 2008Nissan Motor Co., Ltd.Sliding member and production process thereof
US7500472Apr 14, 2004Mar 10, 2009Nissan Motor Co., Ltd.Fuel injection valve
US7572200Aug 10, 2004Aug 11, 2009Nissan Motor Co., Ltd.Chain drive system
US7650976Nov 28, 2007Jan 26, 2010Nissan Motor Co., Ltd.Low-friction sliding member in transmission, and transmission oil therefor
US7771821Aug 5, 2004Aug 10, 2010Nissan Motor Co., Ltd.Low-friction sliding member and low-friction sliding mechanism using same
US8096205Jul 23, 2008Jan 17, 2012Nissan Motor Co., Ltd.Gear
US8152377Jul 13, 2010Apr 10, 2012Nissan Motor Co., Ltd.Low-friction sliding mechanism
US8206035Aug 6, 2004Jun 26, 2012Nissan Motor Co., Ltd.Low-friction sliding mechanism, low-friction agent composition and method of friction reduction
US8575076Oct 22, 2008Nov 5, 2013Nissan Motor Co., Ltd.Sliding member and production process thereof