US878560A - Air-gun. - Google Patents

Description

PATENTBD PBR-11., 1908.

D. F. POLLEY.

AIR GUN. APPLIQATION FILED MAY 16,1904.

THE Nu\RR1s treks co., wAsmNsroN, D. c.

UNITED i sTATEs PATENT oEEIoE.

DAVID FRANK POLLEY, OF PLYMOUTH, MICHIGAN, `ASSIGrNOR TO MARKHAM AIR RIFLE COMPANY, OF PLYMOUTH, MICHIGAN, A CORPORATION OF MICHIGAN.'

v AIR-GUN.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed May 16. 1904:. Serial No. 208,227.

To all whom it may concern: ,j

Be it known that I, DAVID FRANK POLLEY, residing at Plymouth, in the county of Wayne and State of Michigan, a citizen of the United States, have invented certain new and useful Improvements in Air-Guns, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to air guns and has particular reference to certain features of construction as herein set forth.

In the drawings Figure 1 is a longitudinal section through a portion of the barrel showing the relation between the air compression cylinder, spring housing and false barrel. Fig.n 2 is a similar view through the false and true barrels showing' the magazine attachment. Fig. 3 is a cross section on line -x Fig. 2.

In the manufacture of air guns one of the vital points of construction is the air compression cylinder or barrel, the accuracy of which largely determines the efficiency of thegun. Considering merely the accuracy of the barrel an efficient construction maybe obtained by the use of a seamless tube of brass, but this material has not heretofore been generally used for thus purpose, 1st, for the reason that as usually constructed the spring housing forms an extension of the air compression barrel, and the brass tube,

would form an expensive construction. Another objection to the use of the brass tube is that it is easily dented or bent out of shape. v

In the present construction I have obtained the advantages of a brass barrel without materially increasing the cost of manufacture and have also protected the barrel from injury.

Another feature of the present construction is the means employed for transferring the shot from the magazine to the true barrel.

As shown in the drawings A is a barrel forming the spring housing, and which may be made of any suitable'material such as tin or other sheet metal, and which need not be constructed with greatl accuracy. B is another barrel which preferably telescopes within the barrel A and forms a forward ex-` tension thereof or what is commonly termed the false barrel.

C is the air compression cylinder or barrel which is preferably formed of a tubeof brass part of its length `is inclosed within the spring housing A, but is separatedtherefrom by a slight s ace equal to the thickness of the materia in the barrel B. Secured within the barrel C at itsforward end is an abutment D this being preferably formed of a cup shaped fitting adapted to fit Within the barrel C and brazed or otherwise secured thereto. i

With the construction described it will be seen that at the oint of connection between the several barre s A, B and C, and the abutment I), vthe metal is so reinforced by the several thicknesses and is so braced by the abutment D as to form both a spring connection, and one which cannot be easily bent or dented. Beyond the point of juncture the s ring barrel C is free from the inclosing barrel) A, and therefore cannot be bent or dented by any ordinary injury to the outer barrel. It is therefore evident that the air compression cylinder will be true as first constructed, and will retain its accuracy during the'life of the gun. i

Within the false barrel B is arranged the true or shootin barrel E, the rear end of which extends t ough a central aperture in the abutment D. The true barrel also preferably projects inward suiciently beyond the abutment to form a support for a washer F formed of a suitable material for cushioning the blow of the piston. The forward end of the true barrel extends preferably to the end of the false barrel and is supported therein by suitable means such as a spider G so as to hold it in axial alinement.

H is a cap for closing .the end of the false barrel and which has a central aperture I in alinement with the true barrel. In the lower portion of this cap is formed a pocket a which is adapted to receive one of the shot from the magazine surrounding the true barrel, and when the gun is turned upward, to deliver said shot into the end of the true barrel. Between this pocket a and themagazine is arranged a cut off J which is preferably in the form of a slide or gate having at its lower end a projecting portion b which passes through an aperture e in the cap, and at its upper end a projecting pin f engaging with 'an aperture g in the cap.

7L is a spring sleeved upon the pin f and serving to normally hold the gate J in its lower position.

L is an aperture in the gate which when moved in registration with the magazine and above the pocket a is adapted to permit one shot from the 'former to pass into the latter. In the normal position of the gate this aperture is, however, out of alinement with the magazine and pocket and portions j of the gate serve to bar the passage between the magazine and pocket'. The gate is centrally apertured at 7c in alinement with the true barrel aperture I.

With the parts constructed as described the magazine or space surrounding the true barrel and within the false barrel may if desired be completely filled with shot by first removing the cap H. The cap H is then replaced and is secured in position by any suitable means. In the use of the gun to transfer the shot from the magazine to the true barrel it is necessary first to press upward on the lug b so as to aline the aperture i in the gate with the magazine. This will permit a single shot to pass into the pocket, but more are prevented from following, and the gate is so constructed that when pressure on the lug b is relieved the spring 7L will cause the downward movement of the gate which will cut off the shot in the pocket from the shot in the magazine. The gun may then be turned muzzle upward which will permit the shot in the pocket a to fall into the open end of the true barrel.

To detachably secure the cap H in position a spring catch is provided which is preferably formed integral with the projecting lug K which forms the sight for the barrel. This lug K passes through a slot L in the false barrel and is secured to the spring arm M within said barrel. N is a locking lug on the sight lug K which is adapted to engage with an aperture O in the cap, the arrangement being such that by depressing the lug K the locking lug N will be withdrawn from the aperture O permitting the cap to be detached.

In order to prevent the sticking of the shot in the pocket the latter is made somewhat larger than the diameter of the shot, and to separate the shot in the pocket from the body of shot in the magazine a projecting lug or finger P is formed on the cap and arranged to coperate with an incline Q on the gate so that whenever the gate is released and assumes its normal position by the action of the spring h the combined action of the'lug P and 'incline Q is to force the shot backward.

into the magazine thereby relieving pressure from the one shot deposited in the pocket.

The other necessary parts of the gun may be of lany suitable construction, and I have therefore omitted illustrating or further describing the saine.

What I claim as my invention is 1. In an air gun, the combination with a barrel forming the spring housing, of a cylinder arranged within said barrel and separated from the walls thereof, and a forwardly extending false barrel fitting between the forward ends of said cylinder and spring housing and secured thereto forming reinforced walls at the point of connection.

2. In an air gun, the combination with a rbarrel forming the spring housing, of a cylinderarranged within said barreland separated from the walls thereof, a forwardly extending false barrel fitting between the forward ends of said cylinder and spring housing and secured thereto forming reinforced walls at the point of connection, and a piston abutment arranged within the cyl- -inder adjacent its connection with the forwardly extending false barrel and forming a bracing for the reinforced wall.

3. In an air gun, the combinationl with a barrel forming the spring housing, of a cylinder arranged within said barrel and separated from the walls thereof, a false barrel fitting between the forward ends of said cylinder and spring housing and secured thereto forming reinforced walls at the point of connection, a true barrel secured within the false barrel, and a piston abutment interposed between the inner end of the false barrel and the cylinder adjacent its connection with the false barrel and forming a bracing for the reinforced walls.

4. In an air gun the combination with a barrel forming a spring housing, of a cylinder arranged within said barrel and spaced from the walls thereof, a forwardly extending barrel fitting between said spring housing and cylinder and connected therewith, and a cup shaped piston abutment fitting within said cylinder yat the point of connection between the barrels.

5. In an air gun the combination with a false barrel of a true barrel arranged therein, and forming a magazine of the space between said barrels, a cap closing said magazine and apertured in alinement with said true barrel being provided with a pocket in l its lower portion for the reception of a single shot, and a gate arranged between the end of the true barrel and the inner face of the end of said cap said gate being provided with apertures adapted to register at different times with the magazine and the true barrel.

6. In an air gun the combination with a false barrel of a true barrel arranged therein, and forming a magazine of the space between the barrels, a cap for the forward end of said false barrel apertured in alinement with said true barrel, being provided with the pocket a in its lower portion, the gate J arranged within said cap beyond the end of said true barrel having the downward projecting lug b and the upward projecting lugf engaging With apertures in said cap and the spring h for normally holding said gate in its lower position.l i v 7. In an air gun the combination with a true barrel and a false barrel surrounding said `true barrel and forming a magazine therebetween, of a pocket for the reception of a single shot arranged to communicate with said magazine, and to discharge into the end of said-true barrel, a gate arranged between said magazine and pocket having an aperture therein normally out of full registration with said magazine and pocket, a spring for holding said gate in its normal position, a iinger piece for moving said gate to register its aperture with said magazine, and pocket, anda stationary lug or finger cooperatingwith said gate to separate the shot in said pocket from the shot in the magazine.

8. In an air gun the combination with a true barrel and a surrounding false barrel forming a ma azine therebetween, of a cap for closing t e end of said false barrel apertured in alinement with said true barrel, a sight lug projecting through a slot in said said true barrel forming a magazine there.

between, a gate for closing the end of said magazine being apertured in alinement with said true barrel, and havin a second aperture normally out of comp ete registration with said magazine, a detachable cap in which said gate is located having a pocket .beyond said gate for the reception of a single shot adapted to be discharged therefrom into the end of the true barrel and a iinger piece for actuating the gate to permit the passage of the shot from said magazine into said pocket.

In testimony whereof I ai'iX my signature in presence of two witnesses.

DAVID FRANK POIALEY. Witnesses:

FRYE VooRHiEs, P. W. VoonHiEs.

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