US2559010A

US2559010A - Trigger attachment for firearms

Info

Publication number: US2559010A
Application number: US116093A
Authority: US
Inventors: Richard E Cutler
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-09-16
Filing date: 1949-09-16
Publication date: 1951-07-03
Anticipated expiration: 1968-07-03

Description

y 195] R. E. CUTLER TRIGGER ATTACHMENT FOR FIREARMS Filed Sept. 16, 1949 mm m m N mfi m 4 m 2 Patented July 3, 1951 V UNITED STATES PATENT, OFFICE I t I 2 ,559,o1o T; TRIGGER ATTACHMENT FOR FIREARMS V Richard E. Cutler, Luck, Wis.

Application September 16, 1949, Serial No. 116,093

1 Claim.

My invention relates to a trigger attachment for firearms. v

A primary object of the invention is to provide a trigger attachment-for rifles of the military or sporting type, the use of which permits the length of travel of the trigger to be controlled and adjustedasdesired. 1 s

A further object is to provide an attachment of the above mentioned type which is highly sim- 'plified, and small, so that it may be normally concealed within the stock of the gun near the top end of the trigger.

A further object is to provide a trigger attachment having adjustable stops for limiting backward play of the trigger called creep, and also the play left in the trigger after the same is pulled called"slap.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a fragmentary side elevation of the action of a conventional rifle, and showing the attachment embodying my invention applied to the trigger thereof,

Figure 2 is a transverse vertical section taken on line 2--2 of Figure 1,

Figure 3 is a perspective view of my trigger attachment, parts omitted, and,

Figures 4 to 6 inclusive are perspective views of modified forms of trigger attachments, parts omitted.

In the drawings, where for the purpose of illustration are shown preferred embodiments of my invention, the numeral Ill designates the breech of a conventional rifle of the military type, having the usual sliding bolt H and magazine l2. The usual trigger I3 is provided within a trigger guard l4, and the trigger includes an upstanding generally vertical extension projecting upwardly within a space 16, rearwardly of the magazine l2. The extension and associated elements are concealed within the stock I! of the rifle, not shown. Th top end of the extension I5 is pivotally connected at 18 to the firing pin escapement mechanism designated generally by the numeral l9, and including a longitudinal horizontally disposed sear l9. This escapement mechanism is of conventional construction and is well known. All of the elements thus far described are conventional, and are embodied in the well-known Enfield army rifle.

. 2 The trigger attachment embodying my invention comprises'a relatively thin fiat generally rectangular plate 20, as shown in Figures 1 m3 inclusive. The plate ZU'may be provided with a rectangular opening 2|, arranged centrally therein for receiving therein the extension l5 of the trigger, whichis rectangular in transverse cross-section. With the plate 20 positioned as in Figure 1, below the sear it, it is preferably'rigidly secured to the extension 15 bywelding, althoughany desired means of attachment may be employed. The plate 20 extends longitudinally forwardly and rearwardly of the trigger extension [5 within the space [6 shown, and is provided near its forward and rear ends with screw threaded openings 22, which receive vertically disposed set screws or adjustable stops 23, carrying lock nuts 24 which engage the bottom of the plate 20. The set screws 23 are adjustable axially within the openings 22 for adjusting the length of travel of the trigger and for controlling the play in the trigger. The tops of the set screws 23 are adapted to engage the bottom of the sear [9, Figure 1.

In use, the forward or right hand set screw 23, Figure 1, is adjusted upwardly to eliminate backward play of the trigger 3, called creep or take-up. When this creep or take-up" exists, the trigger l3 tends to swing freely to the right, Figure 1, before it is pulled. The opposite or rear set screw 23 is adjusted upwardly to eliminate the play left in the trigger after the trigger has been pulled, and has actuated the escapement mechanism. This play is called slap, and when it is present, the trigger l3 will continue its movement to the left, Figure 1, after firing. By adjusting the two set screws 23, both creep and slap can be controlled and adjusted by the user to conform to his preference, thus improving the accuracy of the firearm and making it easier to handle by the individual. The plate 20 and associated elements are concealed within the stock, as previously stated. The attachment in no way detracts from the appearance of the rifle.

In Figure 4, I have illustrated a modified form of plate 25, identical with the plate 20 except that a rectangular notch 26 is formed in one longitudinal edge of the plate, instead of the opening 2|. The trigger extension l5 engages within the notch 26 and is welded to the plate 25, which assumes the same position in assembly as the plate 20. All other parts are identical with those shown and described in connection with the first form of the invention.

In Figure 5, I have shown a further modification of the invention, wherein the plate is formed in two plate sections 21, which are identical, and which engage the forward and rear edges of the trigger extension l5 and are welded thereto to assume the same positions as the forward and rear portions of the plate 20, Figure 1. All other parts are identical with those shown and described in connection with the first form of the invention.

In Figure 6, I have shown a still further modifled form of plate 29, which is identical with the plate 20, except that one end portion 29 thereof is bent upwardly as shown. This is desirable when installing the attachment upon certain types of firearms having sears of different shapes than the straight sear l9, Figure 1. All other parts are identical with those shown and described in the first form of the invention.

It is to be understood that the forms of the invention herewith shown and described are to be taken as preferred examples of the same, and that various changes in shape, size and arrangement of parts may be resorted to without departing from the spirit of my invention of the scope of the subjoined claim.

Having thus described my invention, I claim:

In a firearm having a stock firing mechanism operatively housed. in the stock and including a horizontally disposed sear, a trigger depending from the underside of the stock and having an upper extension pivoted to the sear, means to resist the extreme forward or rearward movements of the trigger and including vertically apertured plate sections secured in longitudinal alignment on the forward andrearward edges of the extension and normally disposed in parallelism with the underside of the sear, said plate sections being housed within the stock and said apertures being threaded, vertically disposed set screws mounted within the threaded apertures\ and adjustably projecting above the plate sec-' tions for selective engagement with the under-\ side of the sear and lock nuts on said screws beneath the plate sections.

RICHARD E. CUTLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Germany Oct. 15, 1938