US2640344A - Combination door lock - Google Patents

Description

June 2, 1953 M. MARGO COMBINATION DOOR LOCK Filed NOV. 25, 1950 2 Sheets-Sheet l 43 4 "uvmvroze.

/Varrqy Marya Attorney Patented June 2, 1953 QEEIQE:

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ZWEIaimm-w (01, wL ggyg 20. The lug has a suitably shaped rounded projecting outer end portion adapted to cooperate with a suitable striker plate or keeper so that the structure just described serves as a spring detent or releasable retaining means that holds the door in a closed position but releases when sufficient force is applied to the door, tending to open it. The 'bolt D of the lock is an elongate part of substantial size slidably carried in a guideway 2! provided in the face H of the case B. The bolt has an outer or forward end portion 22 adapted to be moved between a retracted position such as is shown in Fig. 6 and an extended position such as is shown in Figs. 1 and 3. The inner end portion 23 of the bolt is located in chamber Y of the case where it is engaged by the means F, the means G and the means H.

The lock mechanism E is a tumbler type combination lock mechanism and in its preferred form it includes, generally, a lock bar 24 mounted to reciprocate in the case, a plurality of tumblers 25, mounting means 26 for the tumblers, adjustable stop means 21 for the tumblers, means 28 normally yieldingly acting on the tumblers to operate them in one direction and operating means 29 for the tumblers.

The various parts of the lock mechanism E are preferably housed or confined within the chamber X of the case except that certain of the parts project from the case for cooperation with other parts of the lock, as will be hereinafter described.

The lock bar is an elongate member slidably supported by the case and in the preferred form of the invention it is slidably supported in guide openings 30 in the back I2 and partition [8 of ried by the back l2 and partition l8 and is spaced below the lower edge portion of the lock bar 24 as shown throughout the drawings. In carrying out my invention. I may employ any desired number of tumblers 25 and when several tumblers are employed, as illustrated in the drawings, they are carried by the shaft 32 so that they are spaced along the shaft, as illustrated in Figs. 3 and 6 of the drawings. Since it is preferred that the tumblers be identical or alike in form, construction and operation, I will describe but one tumbler, it being understood that the description is applicable to all of the tumblers. It is to be understood, however, that in practice the tumblers are set differently through the means 21 hereinafter described.

Each tumbler '25 is preferably a rotatable element cooperating with the lock bar 24. The tumbler is rotatably supported by shaft 32 to rotate in a plane normal to the longitudinal axis of the lock bar and the tumbler is preferably a disc-like part having a central opening or bore 33 rotatably passing the shaft 26. The disclike tumbler is of such diameter as to overlap or intersect the lower edge portion of the lock bar 24. The lock bar has a notch or recess 34 in its lower edge portion accommodating the peripheral portion of the tumbler. With the periphery of the tumbler engaged in the notch of the lock bar the bar is locked against longitudinal movement. A recess or notch 35 is provided in the periphery of the tumbler and the tumbler is such that it can be rotated to a position where the notch 35 registers with the lock bar, in which case the bar is free to move longitudinally.

There is an adjustable stop means 2! for each tumbler which means includes, generally, a stop lug 36 projecting axially from one sideof the tumbler, a block 3'! rotatably supported on shaft 36 at said side of the tumbler, a stop lug 38 projecting from the block to cooperate with the stop lug 36, and means for setting the block 31 in various rotative positions, which means includes, generally, notches or recesses 39 in the periphery of the block 31 and a stop pin 40 carried by the case to engage one of the recesses, the pin being mounted so that it can be disengaged to allow a block to be set in various positions. The block 31 i preferably a disc-shaped part having a central opening or bore 41 passing the shaft 32. The stop 38 projects from the block 31 toward the tumbler 25 and engages the side wall 42 of the tumbler so that it serves to space the block 31 from the tumbler.

The means provided for setting the block in various rotative positions serves to fix the block against rotation and thereby sets or fixes the stop lug 38 in a fixed position so that it stops the tumbler in a predetermined rotative position. It will be apparent that by locating the stop lugs on the tumbler and block so that they engage, as shown in the drawings, the rotative v position of the block 31 will determine the position in which the tumbler is stopped. In the preferred form of the invention the recesses 39 provided in the periphery of the block are in a continuous series around the periphery of the block so that the block has a notched or toothed periphery similar to a gear. The set pin 40 is slidably carried in a guide opening 43 in the bottom M of the case and a releasable retainer 44 applied to the bottom of the case normally holds the pin in position where its inner end extends into the case to enter one of the recesses 39 in the block 31. In the case illustrated the retainer 44 is held by a screw 45 as clearly illustrated in Fig. 6 of the drawings. The means 28 acting to normally yieldingly turn the tumbler 25 engages the tumbler so that the tumbler is normally turned to a position where the stop lug 36 on the tumbler engages or stops against the stop lug 38 on the block 31. In the preferred form of the invention the means 28 involves a helical spring having a coil portion 46 surrounding the shaft 32 between the tumbler and the block and having one projecting leg 41 fixed to the tumbler and another projecting leg 48 fixed to the case.

The operating means 29 for the tumbler is operable to rotate or advance the tumbler about the shaft 26 so the tumbler is turned to move the stop lug 36 away from the stop lug 38 until the tumbler reaches a position where its notch 35 registered with the lock bar 24. The means 29 includes, generally, a manually operable finger piece 59 at the exterior of the case at one side thereof, preferably the outer side 15, a shank 51 carrying the finger piece and slidably supported in the case, a ratchet wheel 52 concentrio with the tumbler and joined or fixed thereto, and a ratchet arm or pawl 53 carried by the shank 5| to cooperate with the ratchet wheel. The shank 5| is slidably guided by the case and tumblers'is overactuated in'the course of operation'of the combination or, in other words, is operated so that the notch of the tumbler moves beyond a position to register with the lock bar. The means J includes, generally, a shiftable support for the control pawls 6B which support is preferably in the form of a shaft 84 supported bythe case to extend through compartment X of the case parallel with shaft 32 and having an end portion projecting into compartment Y of the case. The several lock pawls 6|] are fixed on the shaft 84 to normally project therefrom into position to engage the ratchet members 52, as clearly shown in Fig. 4 of the drawings. The shaft 84 is rotatably supported by the case and a finger 86 projects from the shaft 84 within the compartment Y. A cam 81 is carried by the lever 12 of the'means G. The cam 81 is preferably a part of the plate 15 attached to the lever 12 and it is so formed and related to the finger BG'as'to cause deflection of the finger and consequent rotation of the shaft 84, each time the lever 12 is moved from the position shown in Fig. 3 to that shown in Fig. 7. This rotation of shaft 84 is such as to lift the lock pawls 60 away from the ratchet wheels thusreleasing them so that the springs 48 rotate the pawls to the stopped positions.

Through the construction just described it will be apparent that the combination lock mecha nism E can be easily and quickly restored or positioned in the fully locked or initial position by simple operation of the handle at the inner side of the door.

To effect restoring of the lock mechanism E from the outer side of the door I provide a restoring handle 90 at the outer side of the case projecting from the case as do the handles or finger pieces 50 of the lock mechanism. The handle 90 is on a shank 9| slidably guided by the case and a spring 92 acts between the outer wall of the case and a stop shoulder 93 on the shank so that the shank is normally in an in or retracted position. A suitable connection is provided between the shank 9| and the shaft 84 so that when the shank 9| is moved to the outer extended position the shaft 84 is rotated to re lease the lock pawls 60. The connection illustrated in the drawings is shown in Fig. 8 and involves a flexible strip 94 of spring material such as spring steel having one end anchored to the shaft 9| at 85 and having its other end anchored to the shaft 84 at 96. The strip 94 forms a tie between the shank 9| and the shaft so that the shaft is pulled around or is rotated when the shank 9| is operated.

From the foregoing description it is believed thatthe setting and operation of the mechanism will be fully understood. It will be apparent that the pins 40 controlling the rotative position of the several blocks 3'1 may be set so that the blocks are in any desired rotative position, thus locating the stop lugs 38 wherever desired. By setting the stop lugs 38 in different positions different numbers or operations of the operating means 29 will be required to bring the tumblers into position with their notches aligned with the lock bar. Assuming the lock mechanism E to be in the fully restored position a person knowing the setting of the blocks 37 may release the lock mechanism E by operating the means 29 controlling the tumblers the proper number of times. When the tumblers have been operated so that their notches are aligned with the lock bar 24 the bar is free to move and the bolt D can be withdrawn by simple operation of the handle 82 8 at the outside of the door. As hereinabove described the door can always be opened freely or easily from the inner side by merely turning or manipulating the handle 10, which operation releases the coupling means F prior to moving th bolt D.

, Having described only a typical preferred form and application of my invention, I do not Wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modifications that may appear to those skilled in the art and fall within the scope of the following claims.

Having described my invention, I claim:

A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a plurality of tumblers normally holding the bar and operable to release the bar and individually operable tumbler actuators accessible at one side of the case, a releasable coupling between the bolt and bar, and two manual operating means each cooperatively related to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released.

2. A look of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a notched lock bar, a plurality of notched tumblers normally engaged in the notches of the bar holding the bar and operable to a position where their notches reg-v ister with the bar to release the bar and individually operable tumbler actuators accessible at one side of the case, a releasable coupling between the bolt and bar, and two manual operating means each coupled to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released.

3. A look of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a plurality of tumblers normally holding the bar and operable to release the bar and individually operable tumbler actuators accessible at one side of the case, a releasable coupling between the bolt and bar including a latch pivotally carried by the bar and normally engaged in a notch in the bolt, and two manual operating means engageable at opposite sides of the case, one operable to release the coupling and coupled with the bolt to operate it and the other coupled with the bolt to operate the bolt when the bar is released.

' 4. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a plurality of tumblers cooperatively related to the lock bar, and tumbler actuators at the exterior of the case to be individually selectively and manually operated at one side of the door, a releasable coupling between the bolt and bar, and operating means including a handle at one side of the case and cam means operated by the handle to first release the coupling and then operate the bolt.

1' and operate the bolt and the other operable to operate the bolt when the bar is released.

12. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a releasable coupling pivotally secured to one end of the lock ing the block in a selected rotative position,

s means normally yieldingly urging each tumbler to a stopped position, and ratchet means for each tumbler operable to rotate the tumbler against the last mentioned means and including an operating handle at the exterior of the case, and two 7 manual operating means each coupled to the bolt I and engageable at opposite sides of the case, one

operable to release the coupling and operate the -bolt and the other operable to operate the bolt when the bar is released.

13. A look of the character described including,

. a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a releasable coupling pivotally secured to one end of the lock bar and adapted to engage the bolt, a plurality of independently rotatable tumblers normally holding the bar and operable to release the bar, stop means for each tumbler, each stop means including a rotatable notched block and a releasable lock pin engaging a notch in the block holding the block in a selected rotative position,

'. means normally yieldingly urging each tumbler to a stopped position, and ratchet means for each tumbler operable to rotate the tumbler against the last mentioned means and including a lock pawl and an operating handle at the exterior of the case, two manual operating means coupled with the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate 1 the bolt when the bar is released, and means operable to release the lock pawls including a handle accessible at the exterior of the case.

14. A lock of the character described including,

a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar coupled to the bolt by a releasable coupling, a plurality of inde- 3 pendently rotatable tumblers normally holding the bar and operable to release the bar, stop means for each tumbler, each stop means including' a rotatable notched block and a releasable lock pin engaging a notch in the block holding the block in a selected rotative position, means normally yieldingly urging each tumbler to a stopped position, and ratchet means for each tumbler operable to rotate the tumbler against the last mentioned means and including a lock pawl and an operating handle at the exterior of the case, two manual operating means, each coupled to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released, means 1 operable to release the lock pawls including a I- handle accessible at the exterior of the case, and

means operated by the first mentioned operating means acting to release the lock pawls when said first mentioned means is operated.

15. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar coupled to the bolt by a releasable coupling, a plurality of independently rotatable tumblers normally holding the bar and operable to release the bar, stop means for each tumbler, each stop means including arotatable notched block and a releasable lock pin engaging a notch in the block holding the block in a selected rotative position, means normally yieldingly urging each tumbler to a stopped position, and ratchet means for each tumbler operable to rotate the tumbler against the last mentioned means and including a lock pawl and an operating handle at the exterior of the case; two manual operating means cooperatively coupled to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released, and means operable to release the lock pawls including a rotatably mounted shaft carrying the lock pawls and a handle accessible at the exterior of the case operable to rotate the shaft.

16. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar coupled to the bolt by a releasable coupling, a plurality of independently rotatable tumblers normally holding the bar and operable to release the bar, stop means for each tumbler, each stop means including a rotatable notched block and areleasable lock pin engaging a notch in the block holding the block in a selected rotative position, means normally yieldingly urging each tumbler toa stopped position, and ratchet means for each tumbler operable to rotate the tumbler against the last mentioned means and including a lock pawl and an operating handle at the exterior of the case, two manual operating means each cou-- pled to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released, means operable to release the lock pawls including a rotatably mounted shaft carrying the lock pawls and a handle accessible at the exterior of the case operable to rotate the shaft, and means operated by the first mentioned operating means rotating the shaft to release the lock pawls when the said first mentioned means is operated.

' 1'7. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a releasable coupling pivotally secured to one end of the lock bar and adapted to engage the bolt, a plurality of independently movable tumblers normally holding the bar and operable to release the bar, stop means for each tumbler, means normally yieldingl urging the tumblers to a stopped position, and operating means for the tumblers-including ratchet mechanisms for moving the tumblers and independently operable handles for operating the ratchet mechanisms, each ratchet mechanism including a lock pawl, two manual operating means each cooperatively related to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released, and cam means operated by one of the operating means acting to release the lock pawls of the ratchet mechanisms.

18. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried. by the case including a lock bar, a plurality of tumblers normally holding the bar and operable to release the bar, and individually operable tumbler actuators accessible at one side of the case, a releasable coupling between the bolt and bar, and two manual operating means coupled to the bolt and engageable at opposite sides of the case, one including cam means operable to release the coupling and means operating the bolt when the coupling i released, and the other operable to operate the bolt when the bar is released.

19. A lock of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including, a notched lock bar, a plurality of rotatable notched tumblers normally engaged in the notches of the bar holding the bar and operable to a position where their notches register with the bar to release the bar, a single shaft supporting the tumblers, and individually operable tumbler actuators accessible at one side of the case, a releasable coupling between the bolt and bar, and two manual operating means cooperatively coupled to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released.

20. A look of the character described including, a case for application to a door and having inner and outer sides, a bolt carried by the case operable to lock the door, a lock mechanism carried by the case including a lock bar, a plurality of tumblers normally holding the bar and operable to release the bar, and individually operable tumbler actuators accessible at one side of the case and each including a tumbler operating ratchet mechanism, a releasable coupling between the bolt and bar, and two manual operating means coupled to the bolt and engageable at opposite sides of the case, one operable to release the coupling and operate the bolt and the other operable to operate the bolt when the bar is released.

MURRAY IVIARGO.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 330,137 Malley Nov. 10, 1885 599,565 Kintner Feb. 22, 1898 1,771,080 Fitzsimmons July 22, 1930 2,533,023 Lickteig Dec. 5, 1950

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