US2863248A - Removable cylinder spindle of cylinder revolvers - Google Patents

Description

2,863,248 Patented Dec. 9, 19 58 ice REMOVABLE CYLINDER SPIN DLE OF CYLINDER REVOLVERS Josef Koucky and Frantisek Koucky, Prague, Czechoslovakia, assignors to Konstrukta Praha, narodni podnilr, Prague, Czechoslovakia Application October 17, 1956, Serial No. 616,409 2 Claims. (Cl. 42-59) The present invention relates to removable cylinder spindles of cylinder revolvers.

As is known, for the purpose of mounting and fastening the cartridge cylinder of cylinder revolvers use is made of a spindle on which the cartridge cylinder rotates during its action. This mounting must be very precise and relatively tightly fitting but at the same time it must be capable of being taken apart easily for the purpose of cleaning and maintaining the weapon in good order. Since a revolver constitutes an exposed weapon in use, the cylinder spindle must be very satisfactorily secured against loosening in view of the complete safety required of the weapon.

In the state of the art as known at present, however, the problem of complete security and at the same time easy accessibility of the securing system still exists and this is due primarily to the nature of the weapon itself, since in a revolver the cylinder spindle is mounted at a point Where reliable securing can be effected only with difiiculty and manipulation when dismantling the weapon is also very difficult owing to the poor accessibility.

The object of the invention is to obviate these disadvantages, this being achieved by constructing the cylinder spindle as a component part secured in its functional position by two cooperating members one of which, by being adjusted into the uncoupling position, causes the cylinder spindle to be initially pushed out of the weapon by the second member for the purpose of facilitating the removal of the cylinder spindle.

The proposed construction solves the problem of securing the cylinder spindle in such manner that the two conditions mentioned, namely good security and easy manipulation when dismantling the weapon, are satisfactorily fulfilled. At the same time, a simple mechanism and a smooth unbroken surface of the weapon are retained, as are required in this case in view of easy carrying, use and maintenance of the weapon. I

A specific embodiment of the invention is illustrated by way of example in the accompanying drawings, in which:

Figures 1 and 2 are partial longitudinal sections of the weapon with the cylinder spindle in the secured and released position;

Figure 3 is a partially sectioned side elevation, the section being taken in the plane of the line 3-3 of Figure 1; and

Figure 4 is also a partially sectioned side elevation, the section being taken in the plane of the line 4-4 of Figure 2.

Referring to the drawing the cylinder spindle 1 carrying the cartridge cylinder 2 is mounted in the usual manner with its two ends in the frame 3 of the weapon, to which is connected the barrel 4, and can be removed from the weapon by sliding it longitudinally towards the mouth of the barrel. In the embodiment illustrated here the cylinder spindle 1 is constructed as a component part secured in its functional position by two cooperating members. Said members are at the same time so conall) structed and arranged that one of said members, by its adjustment into the uncoupling position, causes the cylinder spindle 1 to be initially pushed out of the weapon by the second member for the purpose of facilitating the removal of the cylinder spindle. The first of said securing members is formed by a segment head 5 of the front end of the cylinder spindle 1, which projects into a lateral recess 6 of the barrel 4 (Figure 2), by which the cylinder spindle is secured against axial displacement and out of which the segment head 5 can be pushed by swinging it out to the side (Figure 4).

The recess 6 is so arranged and constructed that the head 5 of the cylinder spindle 1 in both its positions (Figures 3 and 4) is practically completely concealed beneath the barrel 4 and projects beyond the lateral outlines of the weapon frame 3 only by part of its rounded side wall, which is provided with a serrated manipulating surface. The cylinder spindle 1 can therefore be turned and be withdrawn from the frame 3 by means of the head 5. Since the head 5 of the spindle 1 must be concealed at a place where manipulation is very inaccessible, the weapon is provided with a further member which facilitates its removal. Said member is formed by a spring loaded pin 7, which is slidably mounted in the frame 3, for example by means of a limiting pin, and is provided with a profiled head, in the present case a conical head as shown in Figures 1 and 2. The head of the pin 7 engages in a corresponding recess 8 in the rear of the segment head 5, which recess is so arranged that it 10- cates the secured position of the head 5 of the cylinder spindle 1 (Figures 1 and 2).

When the head 5 is swung outwards (Figure 4) from the secured position (Figure 3) against the pressure of the spring of the pin 7, it thus passes out of engagement with the Wall of the recess 6 of the barrel, the profiled head of the pin 7 moving out of the recess 8 in the segment head 5. Immediately thereafter the strong spring of the pin 7 causes the head 5 to be displaced out of the region of the recess 6 into a position in which, in spite of the poor accessibility, it can more easily be grasped by the hand (Figure 2) for the removal of the cylinder spindle 1 from the frame of the weapon.

As will be seen from the foregoing description, the entire securing mechanism is concealed in the weapon frame and therefore in no way disturbs the smooth lines nor simplicity of the weapon. At the same time, dismantling is facilitated in spite of the relatively poor accessibility of the head 5, although only a small part of the latter projects outwards for manipulation,

The arrangement described and illustrated represents only one exemplified embodiment of the principle of the invention and can therefore be modified in various ways without thereby departing from the scope of the invention.

We claim:

1. In a cylinder revolver, the combination of a frame, a barrel extending forwardly from said frame, a cartridge cylinder fitting in said frame, a spindle received in said frame to rotatably support said cylinder within the latter, said spindle being removable axially forward from said frame below said barrel, a segment head on the forward end of said spindle, said barrel having a laterally opening recess in which said segment head engages to resist axial removal of said spindle, said head being movable laterally out of said recess in response to swinging of the head and spindle about the axis of the latter, a spring loaded pin slidably carried in said frame parallel to said spindle and yieldably urged out of the frame to bear against the back face of said segment head, and said back face of the segment head having a detent recess therein positioned to receive said pin when said head engages in said laterally opening recess of the barrel so that said pin normally yieldably resists swinging of said segment head out of said recess of the barrel and so that, tionof the head projects laterally beyond the adjacent side after movement of said head out of said laterally opening surface of said frame. recess, said pin urges said spindle forward to facilitate removal .of the latter from said frame. References Cited in the file of this patent 2 In a cylinder rew ol v er, the coinbination as in claim 1; wherein said segment head -is-c6ncealed beneath said 5 UNITED STATES PATENTS barrel both when engaged in, and when disengagedfrom, 169,848 Rupertus Nov. 9, 1875 said laterally opening recess; and wherein said segment 453,421 Caldwell June 2, 1891 head has an arcuate edge portion with a serrated manipu- 530,730 S ith D 11 1894 lating surface thereon, said head being dimensioned in 10 334 119 Zaiser Apt 7 190g relation to said frame so that only said arcuate edge por-

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