US2894116A

US2894116A - Light projecting unit for converting a revolver for practice firing

Info

Publication number: US2894116A
Application number: US691003A
Authority: US
Inventors: Arthur H Koskey
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-10-18
Filing date: 1957-10-18
Publication date: 1959-07-07
Anticipated expiration: 1976-07-07

Description

m m 19R? mi i -89 M169 gEA y 7, 1959 A. H. KOSKEY 2,894,116

LIGHT PROJECTING UNIT FOR CONVERTING A REVOLVER FOR PRACTICE FIRING Filed Oct. 18. 1957 FIG. .1. ,0 74 a] 38 Z0 64 I I 24 FIG.

. INVENTOR- 4277/1/2 H. zqszsv,

- T n roems'vs United States Patent LIGHT PROJECTING UNIT FOR CONVERTING A REVOLVER FOR PRACTICE FIRING Arthur H. Koskey, Anchorage, Alaska Application October 18, 1957, Serial No. 691,003 2 Claims. (Cl. 240-641) The present invention relates to a light projecting device for incorporation in a revolver.

An object of the present invention is to provide a light projecting device which lends itself to ready insertion within and withdrawal from a revolver without changing the revolver mechanism.

Another object of the present invention is to provide a light projecting device which lends itself to the practice of target shooting without the expenditure of ammunition.

A further object of the a light projecting device present invention is to provide which enables the user thereof to become proficient in the handling of a firearm of the revolver type without the wasting of ammunition and the attendant expense of the ammunition.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in connection with the annexed drawing, in which:

Figure 1 is an elevational view of a revolver with the light projecting device of the present invention installed therein and shown partially in section;

Figure 2 is an elevational view of a component of the device of the present invention, removed from the revolver frame;

Figure 3 is an end view of the assembly shown in Figure 2;

Figure 4 is a sectional view taken on the line 4-4 of Figure 3; and

Figure 5 is an isometric of the present invention.

Referring in greater deta' to the drawing in which like numerals indicate like parts throughout the several views, in Figure 1 a revolver is shown and designated by the reference numeral 10, the revolver including a frame 12, a barrel 14 projecting longitudinally from the frame 12, and a hand grip 16 depending from the frame 12.

The revolver includes a trigger 18 projecting from the frame 12 and having a portion adjacent one end exteriorly of and forwardly of the hand grip 16 and having a portion adjacent the other end within the frame 12 and pivotally connected thereto for movement of the exterior portion toward and'away from the hand grip 16. The components of the revolver, as above described, are of conventional construction and also include a hammer 20 and a firing pin 22 positioned rearwardly of and spaced from the barrel 14. The firing mechanism includes a lifter element 24, a scar 26, and a pawl 28. The lifter element 24 is connected to the trigger 18 for moving the hammer 20 to a cocked and safety position and to a further position releasable by engagement of the trigger 18 with the external portion of the sear 26 permitting the driving of the hammer 20 by a main spring 30 into engagement with the firing pin 22. The pawl 28 is connected to the trigger 18 for rotating the ammunition-carrying cylinder normally supported in the frame 12 in step-by-step fashion so as to selectively align the view of a second component 2,894,116 Patented July 7, 1959 cartridge carrying bores of the cylinder with the bore of the barrel and the firing pin.

The present invention comprises a device which may be inserted in the frame 12 of the revolver 10 in place of the ammunition-carrying cylinder normally supported therewithin. The device of the present invention comprises a cylinder 32 insertable within the frame 12 and having a bore 34 extending from one end to the other end. When the cylinder 32 is within the frame 12, the bore 34 has one end in registry with the barrel 14 and the other end remote from the barrel 14.

An insulating socket 42 having a bore extending longitudinally therethrough is positioned within the cylinder bore 34 inwardly of the end remote from the barrel 14. An incandescent lamp bulb 36 having a shell contact 38 and a base contact 40 is mounted in the socket 42 so that the bulb faces the barrel 14 with the base contact 40 facing away from the barrel 14. A conductor in the form of a coil or spiral spring 44 is mounted in the portion of the bore in the socket 42 behind the lamp base contact 40. One end of the coil spring 44 is in contact with the base contact 40 and the other end of the spring 44 is coextensive with the adjacent end of the bore 34 so that it extends to the end of the cylinder 32, which end faces the firing pin and is formed with a fiat and uninterrupted surface so as not to be reactive to the movements of the pawl 28. In this manner, the cylinder is maintained in a stationary, nonrotatable position, as the trigger is repeatedly squeezed, whereby the bore 34 is maintained in axial alignment with the bore of the barrel 14 and with the firing pin 22. A coil spring 46 surrounds one end of the firing pin 22 and normally keeps the firing pin rearwardly of and spaced from the adjacent end of the spring 44.

A pair of batteries 48, constituting a source of electric current carried by the cylinder 32, are positioned in bores provided in the cylinder 32 at spaced points from the bore 34. The central terminals of the batteries 48 are connected by the wire 50 to the shell contact 38, the central terminals being designated by the numeral 52 in Figure 4. The end of the cylinder 32 is provided with a recess, as is clearly apparent from Figures 1 and 4, with the U-shaped conductor wire or conductive element being seated in the recess. As is clearly apparent from a study of Figure 3, in conjunction with Figures 1 and 4, the ends of the wire are connected to the central terminals of the batteries 48 while the bight portion of the wire is provided with a projection 51 that extends through the insulated socket and is in contact with a contact 53 that is in contact with the shell contact 38. The shell of each battery 48 is the other terminal and is electrically connected by means of a coil spring 54 to the cylinder 32 which is of metallic construction and is an electrical circuit with a frame and therefore in circuit with the firing pin 22. The frame 12 constitutes means electrically connecting the firing pin 22 to the batteries which are the source of current for the device of the present invention.

One of the components of the device of the present invention is a lens-carrying clip 56 having a barrel portion 58 receivable within the barrel 14 of the revolver 10 and having a forked portion 60 slidably engageable on each side of the sight 62 of the revolver 10. A lens 64 is fixedly positioned within the barrel portion 58 adjacent the end and closes the barrel portion 58. When the clip 56 is positioned within the barrel 14 adjacent the end of the barrel 14 remote from the frame 12, the lens serves to concentrate the light beam from the bulb 36 and to project the same upon the target when the filament within the bulb 36 isenergized.

A recess 66 at one end of the cylinder 32 surrounding a spring-biased pin 68 is used to removably hold the cylinder 32 in one type of gun frame having a complementally arranged cylinder latch (not shown) when the pin. is removed. The pin 68 removably holds the cylinder 32 in another type of gun frame having a complementally arranged recess for receiving the pin 68. The cylinder 32 is provided with a conventionally arranged support pin 70 about which the cylinder swings as an axis when it is moved into and out of the frame 12.

In use, the revolver has its ammunition-carrying cylinder removed and the cylinder 32 substituted for the conventional cylinder. The clip 56 is secured to the end of the barrel 14 with the forked portion embracing the sight 62. The presence of the forked portion 60 adjacent the sight 62 reminds the user that the barrel is closed by the clip 56. Upon pulling or squeezing of the trigger 18 the hammer 20 is raised to the cocked position and further movement of the trigger 18 engages the sear means engaging the firing pin to normally retain it in a rearward position and said frame having a recess at the base of the barrel adapted to normally rotatably receive a cylinder formed with cartridge containing bores selectively alignable axially with the bore of the barrel and with the firing pin as the cylinder is rotated by the pawl; a light projecting unit for converting the revolver for practice firing; said unit comprising an electrically conductive cylinder having means mounting it in place in the recess with the cylinder being adapted to remain in a stationary position, said cylinder having opposing ends, one of said ends facing the firing pin and having an uninterrupted surface so as not to be reactive to movements of the cylinder advancing pawl, said cylinder having a first longitudinal bore formed therein and through being in alignment with the the ends and the first bore bore of the barrel and the firing pin, an insulated socket I mounted in the bore adjacent the end facing the firing 26 to release the hammer and resulting in the hammer driving the firing pin 22 into electrical engagement with the adjacent end of the spring 44 completing the circuit from the batteries through the frame and firing pin through the base contact 40 of the bulb 36 and illuminating the bulb. The light shining projected by the lens 64 onto the target in the simulation of a bullet shot from the revolver 10. While the pawl 28 moves upwardly, as the trigger is repeatedly squeezed, the pawl has no effect upon the cylinder 32 because'of the flat and smooth or uninterrupted surface of the rear end of the cylinder, whereby the cylinder remains in a stationary, non-rotatable position, insuring that the bore 34 is in alignment with the bore of the barrel and with the firing pin. It will be seen therefore that by using the device of the present invention target practice may be had without the expenditure of expensive ammunition and the user thereof may become proficient at handling the revolver and aiming of the same.

While only a preferred embodiment of the present vention has been shown and described, other embodi- 4 ments are contemplated and numerous'changes and modifications may be made therein without departing from the spirit of the invention as set forth in the appended claims. e

What is claimed is:

1. For use with a revolver comprising a frame, a barrel extending longitudinally from the frame, a hand grip depending from the frame, a trigger operatively projecting from the frame in advance of the hand grip and having a cylinder advancing pawl attached thereto, a hammer pivotally carried by the frame, a firing means operatively connecting the trigger to the hammer for cocking and releasing the hammer, a firing pin slidably mounted in the frame in front of thehammer so as to be engaged by the hammer and moved forwardly thereby and spring through the barrel is l ally in the socket bore and extending with the base contact of the bulb to the said end of the pin, an incandescent bulb fitted in the socket and facing toward the barrel and having a base contact, said socket having an' axial bore exposing the base contact of the bulb to the firing pin, a coil spring conductor housed axifrom engagement cylinder, said bulb having a shell contact, said cylinder having at least one further longitudinal bore, a dry cell battery mounted in said further bore and having a contact terminal at the end of the cylinder facing the firing pin, a conductive element mounted in said end of the cylinder and connecting the contact terminal of the battery with the shell contact of the bulb, said battery having a base contact electrically connected to the cylinder which is in electrical contact with the portion of the frame supporting the firing pin so that when the firing pin engages the coil spring conductor in the socket bore, a circuit is completed through the firing pin to illuminate the bulb and means mounted in the barrel for concentrating and focusing the light rays from the bulb.

2. A light projecting unit as claimed in claim 1, wherein said cylinder has two of such further bores and a dry cell battery is mounted in each bore and is electrically connected to the cylinder and said conductive element includes a substantially U-shaped wire having its ends connected to the contact terminals of the batteries and having its bight portion connected to the shell contact of the bulb."

References Cited in the file of this patent 1 UNITED STATES PATENTS 876,088 Pfeil Jan. 7, 1908 1,451,294 Doucet Apr. 10, 1923 1,490,272 Hickam Apr. 15, 1924 1,645,881 Strong Oct. 18, 1927