Патент USA US2059694код для вставки
Nov. 3, 1936. ‘ I ' E, JACOB] 2,059,694 LOCK Filed Nov. 50, 1928 Illl [7/1, v | 4 5% M?” 2,059,694 Patented Nov. 3, 1936 UNITED STATES PATENT QFFI'CE 2,059,694 LOCK Edward N. Jacobi, Milwaukee, Wis., assignor to Briggs and Stratton Corporation, Milwaukee, Wis., a corporation of Delaware Application November 30, 1928, Serial No. 322,890 10 Claims. (01. 70-46) This invention has as an object the provision of new and simpli?ed means for maintaining a lock cylinder .assembled in its mounting member or head. Another object of this invention resides in the provision of a lock of the character described having means for maintaining the lock cylinder assembled with the mounting member or head which means may be actuated to permit the 10 ready authorized removal of the lock cylinder from the mounting member. Another object of this invention resides in the provision of a lock of the character‘ described in which simpli?ed means are provided for main 15 taining the lock cylinder assembled with the mounting member and which may be actuated to permit the removal of the lock cylinder when rality of tumblers 8 which, when in looking posi tion, are received in a longitudinal locking groove or channel 9 formed in the mounting head in 10 communication with the bore 6. The tumblers 8 are spring urged to engage their locking ends in the groove or channel 9 in the periphery of the lock cylinder by the insertion of a proper key Ill, thus permitting free rotation of the lock 15 cylinder. turned by a proper key to a predetermined inter mediate position. ber 13 stamped from relatively hard metal to urged plunger or detent ?nger carried by the lock cylinder and engageable in an annular groove in the mounting member and which may be moved to an inactive position when the cyl inder is turned to a predetermined position with respect to the mounting member. With the above and other objects in view which will appear as the description proceeds, my 30 invention resides in the novel construction, com bination and arrangement of parts substantially as hereinafter described and more particularly de?ned by the appended claims, it being under’ stood that such changes in the precise embodi 35 ment of the herein disclosed invention may be made as come within the scope of the claims. In the accompanying drawing, I have illus trated several complete examples of the physical embodiment of my invention constructed accord ing to the best modes I have so far devised for the practical application of the principles there of, and in which: Figure 1 is an end view of a lock embodying my invention with parts broken away and in sec 45 5 represents the mounting member or head of a conventional lock having a longitudinal bore 6 Vi extending therethrough to rotatably receive .a lock cylinder 1. The lock cylinder has a plu The forward end of the mounting head 5 is provided with a counterbore H to receive the And a more speci?c object of this invention resides in the provision of a lock having a spring 2 Referring now more particularly to the ac companying drawing in which like numerals designate like parts throughout the several views, tion to illustrate structural details; Figure 2 is a transverse, sectional view taken through Figure 1 on the plane of the line 2-2; Figure 3 is a view similar to Figure 1 illustrat ing a slightly modified form of my invention; Figure 4 is a view, partly in section and partly 50 in elevation, taken through Figure 3 on the plane of the line 4—4, and ' Figure 5 is a cross sectional view taken through the forward end of the lock illustrating another 55 modi?ed form of my invention. horizontal or annular ?ange l2 of a cap mem protect the lock cylinder against destruction and is engaged over its forward end being secured thereon in a novel manner now about to be de scribed. The lock cylinder 1 is insertable in its mount ing head 5 from the forward end and is re 25 strained against displacement therein by a pair of plungers or detent ?ngers l4 slidably mounted in parallel bores or pockets l5 formed in the lock cylinder at opposite sides of its key slot l6. 30 The bores or pockets I5 extend inwardly from the periphery of the lock cylinder in opposite directions and are spaced from the forward end of the cylinder a distance substantially half of the depth of the annular flange l2 of the cap member 13. The plungers Ill have their outer ends reduced, as at H, to- pass through apertures [8 formed in the ?ange l2 of the cap member in alignment with the bores l5 and thus maintain the cap 40 member secured on the end of the locking cylin der. The shoulder formed on the plungers by the reduced ends is engageable with the inner surface of the cap member flange to limit outward move— ment thereof by action of their urging springs I!) which are con?ned between the ends of the bores or pockets l5 and the ends of the plungers. In assembling the lock cylinder and its cap member with the mounting head, the plungers I4 are held in their retracted positions to permit the same to enter the counterbore I! in the forward end of the mounting head and after the lock cylinder has been moved to its proper longitudinal position in the mounting head, the reduced ends I‘! of the plungers are aligned with an annular ‘' 2 2,059,694 channel 26 extending from the counterbore ll, into which they are extended by their urging springs l9 thus maintaining the lock cylinder and its cap against removal from the mounting head. Figure 1 illustrates the lock cylinder turned to an intermediate position aligning the plungers M with a pair of apertures 2| in the mounting head and communicating with the annular channel 20 whereby the plungers may be retracted against 10 their urging means by the insertion of proper tools through the apertures 21 to permit the re moval of the lock cylinder from the mounting head. In Figures 3 and 4, a slightly modi?ed form of 15 my invention is illustrated in which the plunger 14 not only serves as a means for maintaining the lock cylinder in its mounting member, but also provides a stop for limiting the movement of the lock cylinder in the mounting member. In 20 this form of my invention, the lock cylinder 1 has but one plunger and its bore l 5 is disposed at an angle to the key slot IS. The end of the plung er’s reduced end I? is preferably cut on an angle, as at 22, to ride within an annular groove 23 25 which does not however, extend around the en tire periphery of the mounting head but termi nates at points 24 and 25 to de?ne de?nite limits of movement for the lock cylinder. An aperture 26 communicates with the channel or groove 23 30 to permit means to be inserted into the channel to retract the plunger l4 within the periphery of the lock cylinder and thus permit the removal thereof from the mounting head. Figure 5 illustrates another modi?cation of 35 my invention and in this instance the plungers M are replaced by a detent ?nger 21 which is stamped from a ?at piece of metal and is re oeived in a recess 28 formed in the lock cylinder 1 at one side of its key slot “5 and in communica 40 tion with an annular groove or channel 29 formed in the lock cylinder. The annular channel 29 extends around the entire periphery of the lock cylinder and is positioned preferably adjacent the forward end of the mounting head 5 to receive 45 a spring 30 which has one end directed radially and inwardly, as at 3i, to engage a corner 32 formed in the detent 21 by a notch 33 therein which extends inwardly from its outer edge. The spring 30 being in tension thus maintains the 50 detent 21 in its position illustrated in Figure 5 with its outer end 34 extended beyond the periph ery of the lock cylinder and into an annular chan—' nel or groove 35 formed in the mounting head in alignment with the groove 29. 55 In this manner, the detent 21 maintains the lock cylinder assembled with the mounting head and when it is desired to remove the lock cylin der, the cylinder is moved by its key to its inter mediate position illustrated and a wire or suit 60 able tool, not shown, inserted through an aper ture 36 in communication with the channel 35 to depress the end 34 of the detent 2'! within the periphery of the lock cylinder. Movement of the detent to this position causes the end 3| of the 65 spring 30 to engage the notch or recess 33 and hold the detent in a position with its end 34 dis posed within the periphery of the lock cylinder to permit ready removal thereof from the mount ing member. 70 From the foregoing description taken in con nection with the accompanying drawing, it will be readily apparent to those skilled in the art to which an invention of this character appertains, that I provide simple and efficient and inexpen 75 sive means for maintaining the lock cylinder of a lock assembled with its mounting head and in which the removal of the lock cylinder from the mounting head for repair or the like may be readily accomplished without in any way de stroying or mutilating the structure. What I claim as my invention is: 1. In a lock device having a mounting member provided with a recess having an aperture lead ing therefrom to its exterior, a lock cylinder mov able in the mounting member between de?nite 10 limits, a spring pressed detent carried by the lock cylinder and having a portion yieldably re tained in the mounting member recess to coop erate with the recess and limit the movement of the cylinder in the mounting member between 15 said de?nite limits, and said detent registering with said aperture when the cylinder is in a pre determined position whereby a tool may be in serted to free the detent from the recess and per mit the ready removal of the cylinder from the mounting member. 2. In a lock device having a mounting member provided with a bore and an abutment, a lock cylinder movable in the bore, a cap engageable over the outer end of the cylinder, a spring pressed detent carried by the cylinder and pro jectable through the cap to engagement with the mounting member abutment to retain the cyl inder within the mounting member and the cap on the cylinder. 30 3. In a lock device having a mounting member provided with a bore and an abutment, a lock cylinder movable in the bore, a cap engageable over one end of the cylinder, a spring pressed de tent carried by the cylinder‘ and projectable 35 through the cap to engagement with the mount ing member abutment to retain the cylinder with in the mounting member and the cap on the cyl inder, and means whereby said detent may be freed of the mounting member abutment to per 40 mit removal of the cylinder from the mounting member when the cylinder is in a predetermined position. 4. In a lock device having a mounting member provided with a bore having an abutment and a 45 lock cylinder movable within the bore in the performance of its locking function, the cylinder having a slot in one side, a flat detent movable in the slot, spring means normally urging the detent into the path of the abutment to prevent the de 50 tachment of the cylinder from the mounting member, means permitting the movement of the detent against the action of said spring to a po sition free of the abutment when the cylinder is in a predetermined position, and means whereby 55 the spring maintains the detent in said free po sition. 5. In a lock device having a mounting member and a lock cylinder member movable therein be tween predetermined limits in the performance of 60 its normal locking function, yieldable means car ried by one of said members and engageable in a channel in the other member for limiting the movement of the lock cylinder member in the performance of its normal locking functions to 65 said predetermined limits and maintaining it assembled with the mounting member, and means whereby said yieldable means may be moved to an inactive position to permit disassembly of the members. 70 6. In a lock device having a mounting mem ber and a lock cylinder member movable therein between predetermined limits in the performance of its normal locking function, a spring pressed member carried by said lock cylinder member and 75 3 2,059,694 engageable in a channel in the mounting member for limiting the movement of the lock cylinder member in the performance of its normal locking function to said predetermined limits, said spring pressed member being cooperable with said chan nel member whereby to prevent outward move ment of said cylinder member from said mount ing member, and means whereby in one position of said cylinder member relatively to said mount 10 ing member, said spring pressed means may be moved to an inactive position to permit dis assembly of the members. 7. In a lock structure, a mounting unit, a look ing unit movable therein in the performance of its 15 normal locking functions, and cooperating abut ments carried by the units for limiting movement of the locking unit in the mounting unit and re movably securing the locking unit in the mount ing unit, one of said cooperating abutments being 20 movable to inactive position by a tool inserted in one of the units when the units are in predeter mined relative positions to disengage the abut ments and release the locking unit for removal. 8. In a lock structure, a mounting unit, a look 25 ing unit movable therein in the performance of its normal locking functions, a locking bolt car ried by the locking unit and normally engaged in a recess in the mounting unit to de?ne the normal limits of movement of the locking unit, disen gagement of the locking bolt out of the mounting unit recess releasing the locking unit for with drawal from the mounting unit, and means whereby the locking bolt may be disengaged from the mounting unit recess. 9. In a lock structure including a mounting unit and a locking unit movable therein between predetermined limits, releasable means for main taining the units assembled, said means serving to 10 de?ne the limits of movement of the locking unit and being releasable when the units are in pre determined relative positions, and means whereby said member may be released to e?'ect dis assembly of the units from the exterior of the mounting unit. 10. In a lock structure, a casing, a barrel mov able in thecasing, a locking bolt carried by the barrel and engageable with a recess in the casing to de?ne the limits of movement of the barrel in the casing, said locking bolt being yieldably main tained in operative position, and means whereby the locking bolt may be moved to inoperative po sition to release the barrel for withdrawal from the casing when the same is in a predetermined 25 relative position with respect to the casing. EDWARD N. JACOBI.