US1373888A

US1373888A - Takedown gun

Info

Publication number: US1373888A
Application number: US383353A
Authority: US
Inventors: Thomas C Johnson
Original assignee: Winchester Repeating Arms Co
Current assignee: Winchester Repeating Arms Co
Priority date: 1920-05-22
Filing date: 1920-05-22
Publication date: 1921-04-05
Anticipated expiration: 1938-04-05

Description

masses.

TAKEDOWN GUN.l

To al? inkom it may concern:

Be it known that THOMAS C. JoHNsON, a citizen of the United States, residing at New Haven, in thecounty of New Haven.-

and State of Connecticut, have invented la new and useful Improvement in Takedown Guns; and I do hereby declare the following, when taken in connection with the Vaccompanying drawings and the'characters of reference marked thereon, to be a full, clear,

and exact description of the same, and which saidvdrawings constitute part of this appli'- lcation, and represent, iii-'- `Figure v1, a view in side elevation of a take-down gun embodying my invention.

Fig. 2, a broken view thereof partly in side elevation and partly in vertical sec-` tion, showing its two main parts as put together and positioned and locked Vby 'my improved frusto-conical ,positioningaifid-Y locking screw;

Fig. 3, a detached broken view in sideele vation of the forward end of the receiver and butt-stock. i

F ig. 4, a corresponding yview of the rear end of the barrel and forearm.

Fig.V 5, a detached view in front elevation of the receiver-extension as it appears when stripped. i

F ig. 6, a side view thereof. Y

Fig. 7, a detached view of the frusto-conical positioning andlocking screw.

My invention relates to an improvement 'in that class of take-down guns composed of two, separately organized, unitary struc tures or parts, adapted to be united for use and taken down-` or separated for transportation, one of these parts comprising the receiver and its system and the other comprising the barrel and its appurtenances; the object of my invention being to provide simple, reliable, and durable means for accurately positioning the unitary parts of the gun when the same is put together. My invention is characterized by the fact that inY the take-down mechanism the function of holding the two unitary parts of the .gun tospecification of Letters Patent. Patented Apr. l5, 19271'. u Application ined may 22, i920." Y serii No. 383,353.

TEM om@ THOMAS C. JOHNSON, 0F NEW HAVEN, CONNECTICUT, ASSI'GNOR TO W'INCHESLILBR',V

With these .ends in'view, inventionVU consists in -a take-down''gun having certain details of construction and combinations of' parts as will be hereinafter described and pointed out in the claims. l i n have shown a two-part take-down gun comprising a receiver unit anda barrel unit, `as these parts may properly be designated. Thevreceiver unit comprises'a receiverl 2, a

receiver-extension', a butt-stock 4, a trigger-guard 5, and a screw 6 for connecting'` the guard to the rearwardly projecting cou*A Y Y l6()Y Forthe illustration ofmy invention, I

pling-lug Y7 of the receiver-extension; while i the barrelunit consists ofa-barrel 8 formed at its rear Aend 'with a concentric threaded stem 9 and furnished with a depending forearm 10 which is secured :toiit in any-con-v venient manner. The said' receiver andbari rel units contain'other parts and appurtenances, which may Vhave'any desired form and have nothing to do with my present invention, which isV applicable I, to all .guns of substantially lthe type of the gunlhe'reinf illustrated.V The forward end of the receiver is internally threaded, asv shown in Fig. 2,

to receive the externally'threaded stem 9 of the ebarrel.y These lcomplementary screwthreads have the function of holding the re-Y ceiver-unit'` andthe barrel-unit'of the gun together when assembled'4 for use `Vand -upon vextreme rear end ofthe barrel proper, I f locate a relatively deep frusto-conical posi- Y tioning and locking socket 11, which receives the frusto-conical positioning dowel-end 12 ofra screw 13 having an intermediate stopshoulder 14 VVand a substantially cylindrical head 15 separated from the said shoulder 14C by awide circumferential groovel for the `reception of a locking-pin 17 by means of ywhich the vsaid screw 13 is prevented from falling out from the lthreaded hole 18 provided for the receptionof the said screw and entering the lower face of the forward yportion of the receiver-extension 3.

In practice, the frusto-conical socket 11 and frusto-conical dowel-end 12 of the Yscrew 13 will be so proportioned, relatively, that the upper end of the dowel-end screw will never come to a bearing Yupon the bottom of the socket during the useful life of the arm, whereby Ythe accurate positioning of the two unitary parts of the gun is guaran-V teed to the user. F or the reception of the substantially cylindrical head V15 of the screw, the lower face of the forward end of the receiver-extension 3 is formed with aV straight-walled counters-bore 19 of sutlicient depth to permit the said head to gradually enter the bore as wear takes place between the said frusto-conical socket 11 and dowelend 12, and is compensated for. Y

In putting the gun togetherVthe receiveri unit and the barrel-unit are screwedV one into the other in the ordinary manner. This is purely a manual operation and, in the nature ofmanual operations, can never be done exactly twice alike. y It is hardly con-V into exact alinement, in which they are` thereafter held. 'This rotation is, of course, a slight rotation, and will vary with each operation of the putting of the gun together. Y y The shocks `'of recoil tending to pull the Y barrel and receiver apart fall entirely upon their heavy. threads, which thus protect the nose of the` take-down screw against any But it is easily within thel power ofV hammering, and hence from any deformation. Y

lVithout going further into the details of the gun herein shown, it may be `described as a take-down gun of the type illustrated in iny prior Patent, No. 1,163,156 of December 7th, 1915. Y

claim: Y

Ina take-down gun having a receivenunit and a barrel-unit, the combination with a receiver provided at its forward end with a threaded opening and a depending abutment-lug, and a' barrel provided at its rear end with a threaded shank Vadapted to be screwed into the said receiver, and also provided with an integral collar located immediately in front of the said'shank and formed Vwith a'frusto-conical recess; of a take-down vScrew mounted in lthe said abut ment-lug and provided with a frusto-conical nose adapted to enter the said frusto-conical recess, whereby after the receiver and barrel units have been manually screwed together and while the said take-down screw is being turned home, the wedge-like action of its frusto-conical nose upon theside walls of the frusto-conical recess will relatively rotate the barrel and receiver-units until they are brought into predetermined relative position, and whereby the threads of the receiver and barrel take the shocks of recoil and protect the said nose of the take-down screw from deformation thereby. t

In testimony whereof I havesigned this specification inthe presence of two subscribing witnesses. Y

THOMAS i O. JOHNSON.