US 2190268 A
Description (OCR text may contain errors)
P. MAGID SWIVEL DEVICE Feb. 13, 1940.
Filed April 27, 1939 ATTORNEYS Patented Feb. 13, 1940 A sN-r orrcs 7 Claims.
This invention relates to swivel devices and more particularly to a detachable swivel device for gun slings and gun straps.
One of the objects of my invention is to provide a pair or a plurality of removableswivel devices for readily adjusting, attaching and detaching gun slings and gun straps.
Another object of my invention is to provide a swivel device of novel construction which can be readily assembled and used with great facility.
Another object of my invention 15130 provide a swivel device having a loop in combination with a bushing of novel construction, in which the loop may be readily and easily detached from said bushing but cannot be accidentally dis-- lodged therefrom.
Another object of my invention is to provide a removable swivel device for gun slings and gun straps which will not interfere with the use of the gun and will render the same more efficient and suitable for accurate shooting.
Other objects of my invention will be set forth in the following description and drawing, which illustrate a preferred embodimentthereof, it being understood that the above statement of the objects of my invention is intended generally to explain the same without limiting it in any manner.
my swivel devices attached thereto, the gun 'being shown partly broken away.
Fig. 2 is an enlarged front view of the swivel device, partially in section.
I Fig. 3 is a side view thereof.
Fig. 4 is a view showing the loop member .partially inserted into the bushing, said bushing member being shown in section, and the loop member being shown partly broken away.
Fig. 5 is a front View of the device in unassembled condition, the loop member being shown broken away for the convenience .of illustration.
Referring to the drawing, particularly to Fig. 1 thereof, R generally designates a gun or rifle of the usual typ-ehaving a forestock l and a butt B.
My swivel device broadly includes a socket element M and a swivel element N. More specifically, socket element M comprises a threaded bolt 2, having a hollow, cylindrical, internally threaded head i. Said head 5 is provided with diametrically opposed slots 8, said slots being adapted to accommodate a screw driver or any other suitable tool. A nut 3 is employed to secure each socket element M within the vertical Fig. 1 is a side view of a gun having a set of grooves of forestock I", as shown in Fig. 1.v A single socket element M or any desired number thereof is permanently mounted within the vertical grooves provided in forestock I so that the bottom of each head 4 is flush with the under 5 surface of forestock l andthat part of the forestock is smooth and has no projections. It is obvious that by employing aplurality of socket elements M, it is possible to quickly alter the length and degree of looseness of straps S and 10 make any desired adjustments thereof, without unb-uckling said strap.
As'showrr in Fig. 2-, swivel element N comprises three parts, namely, bushing member' I l, cap screw 7 and non-continuous loop I6.
Bushing-"member" II is formed with a vertical b'ore l2 for receiving theshank of capscrew 1-. It will be noted that the lower part of bore I2 is threadedat- I3, as shown in Fig. 4. It will also be noted that bushing H is generally of a 20 truncated conical shape, having an upper bevelled side edge; Bushingis also formed with a horizontal .bore l l 'of slightly larger diameter than the diameter of the "transverse cross" sectionofloop l-6-. I An inclined bore l-5-of substantially larger diameter than bore it is formed at the left side of bushing. Said bore i5 is formed so as to permit one of the free ends IBa, of loop IE to be inserted into the bushing. In order to assemble loop I6 and bushing ll, 30 loop I6 is tilted at an angle relative to bushing II and free end Ifim of saidloop is inserted through bore l5 until said free end almost abuts the opposite wall of said bushing, as shown in Fig. 4. Loop I6 is then turned relative to bush- 35 ing H until the free ends of said loop lie parallel to bore I l. Bushing II is .then moved so that the right free end of loop I6 is inserted into bore 14. The shank of cap screw 1 is then inserted into vertical bore l2, thus completing the assembly of the. swivel element.
One of the advantages of being able to readily disassemble loop Hi from bushing H is that strap S may be readily inserted through loop It without unbuckling said strap. This is shown in Fig. 4
4, strap S being shown in dotted lines.
As will be clearly observed from Fig. 2, cap screw 7 is formed with the head 9, said head having a diametral slot Illformed therein. Said slot H) is adapted to receive a screw driver, tool, 50 or coin for the purpose of making adjustments.
It will be noted that the portion of the shank of cap-screw 1 directly adjacent head 9 is not threaded and this unthreaded area is designated by the reference numeral 8. The purpose of this 5 is to permit bushing II and loop IE to be freely rotatable before cap screw 1 is tightened. Thisallows the loop and bushing to be fixed in any desired position. 1
While I have shown in the various figures of the drawing, the swivel element N assembled with the bushing member II in the position in which its bottom face is adjacent cap screw 1, I do not wish to be limited to this arrangement. Bushing member Il may bein thereverse position than that illustrated in the drawing. That is, it may 'be assembled withits upper bevelled edge adjacent cap screw 1. In this position, it will function just as effectively and efficiently as in the position illustrated in the drawing.
Referring again to Fig. 1, a threaded, straight type, coarse wood screw is set in butt B so that the bottom of the head of said screw is flush with the under surface of butt B. The construction of the head of screw I1 is identical with the construction of the head of bolt 2 previously described. Swivel device N having loop l8 mounted thereon can then be'attached to the head of screw ll so that the entire adjusting device is ready for use.
As will be discerned from Fig. 3, loop I6 is of generally curved or arcuate form. Loop I8, however, is of the usual flat form. The purpose of using a curved loop I6 for the front swivel only is for accommodating the hand so that the swivel device may be used with the greatest comfort and ease when the gun is handled or fired.
The principal object of my particular bushing construction is to allow easy assembling of the loop onto said bushing. Because of this feature, the loops may be manufactured in mass production and shaped before insertion into the bushing; whereas in the usual type of gun swivel bushings, each loopmust be shaped in the bushing and this perforce entails greater expense and labor. r
I have shown a preferred embodiment of my invention but numerous alterations and omissionsmay be made without departing from its spirit. Likewise, my improved swivel device and bushing member per se may be readily employed and adapted for use other than with guns or fire arms and I therefore do not desire to be limited to use thereof only in connection with guns, etc.
1. A bushing having a cylindrical body portion with a vertical bore formed therein, said vertical bore being adapted to receive the shanks of a screw or the like, said body having a pair of diametrically opposed horizontal bores formed therein, one of said horizontal bores having at least oneof its faces inclined to a horizontal plane, said horizontal bores being adapted to receive the free end of a loop or the like.
2. A bushing as claimed in claim 1 in which the body member has a truncated conical shape.
3. A swivel device of the character described comprising a socket element and a swivel element releasab-ly connected to each other, said swivel element comprising a bushing member, a cap screw and a loop, said bushing having a vertical and horizontal bore formed therein, said bores intersecting each other, one of said horiz'ontal bores having at least one of its faces inclined to a horizontal plane.
4. A swivel device as claimed in claim 3 in which the bushing member is of truncated conical shape.
5. A swivel device as claimed in claim 3 in whicha portion of the shank of the cap screw is not threaded.
6. A swivel device as claimed in claim 3 in which a portion of the vertical bore of the bushing is threaded.
'7. A swivel device comprising a socket having an opening in its inner end for the reception of a swivel element, said swivel element comprising a bushing, a cap screw and a loop, said bushing having a vertical bore adapted to receive the shank of the cap screw, said bushin having a pair of diametrically opposed horizontal bores formed therein, said horizontal bores being adapted to receive the free ends of the loop, one of said horizontal bores having at least one of its faces inclined to a horizontal plane.