US1018475A - Lock. - Google Patents

Description

0. W. BEDBLL.

LOOK. APPLIOATIOH FILED NOV. 30, 191D.

Patented Feb; 27, 191.2.`

INVENTOR lll/Ill ATTORNEY cnLUMBlA PLANOGRAPH coA. WASHINGTON. u. c. x

' press the locking-members outwardl NITEI) STATES PATENT OFFICE.

ORLANDO W. BEDELL, 0F NEW YORK, N. Y., ASSIGNOR TO ELY-NORRIS SAFE COMPANY, OF yPER'Tl' AMBOY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

LOCK.

Specification of Letters Patent.

Patented Feb. 27, 1912.

Application filed November 30, 1910. Serial No. 594,840.

To all whom it may concern:

Be it known that I, ORLANDO W. Brumm..4 a citizen of the United States, residing in the city of New York, county of Richmond, and State-of New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention relates to locks and has reference particularly to locks of the type commonly employed on the doors of safes and vaults.

The object of the invention is to effect certain improvements in the construction of locks for such use, to provide what is known as a dead-lock, whereby accidental and unintended movement ofthe lockingmembers independently of the time mechanisms or other devices controlling their movement is prevented.

In the construction of safes and vaults, it is common to provide bolts on the door, movable outwardly to carry their ends into openings in the j amb of the door opening, and locking mechanisms, preferably time-v controlled, for governing the inward movement of these locking-members to release the door. When the locking-members have been shot, that is, when they are in locking position, they are not positively held against movement to unlocking position, and it is possible for forces to so act upon the locking-members as to cause such inward movement and the consequent release of the door. jamb into which the ends of the lockingmembers project may have tapered side walls, which, acting in conjunction with vibration of the safe dueto any cause, might result in the locking-members being gradually movedinward until finally the door became released. Constructions with which such unintended movement of the lockingmembers might occur are now in commor use and are considered as secure against such unintended movement merely becausf springs are arranged in some manner to into locking position. The provision o such springs, however, is not sufficient to completely prevent such unintended movement of the locking-members, and an absolute deadlock for this purpose is liighly desirable.

Thus, the holes in the door- Fig. 1, broken away in part; Fig. 3 is a detail sectional view on line 3 3 of Fig. l; and Fig. 4 is a view of certain of the parts illustrated in Fig. 1, showing the dead-locking positions of those parts.

Referring to these drawings, 1 indicates the base upon which the lock is mounted,

and 2 and 3 are locking-members mounted thereon and adapted to move radially, outwardly and inwardly, to locking and unlocking positions, respectively. In the present instance, these locking-members 2 and 3 are shown as draw-heads, provided with upwardly extending projections at their nonadjacent ends, which enter slots in bolts whose ends are adapted to enter openings in the door jamb; but it is obvious that the members 2 and 3 could be so formed as to constitute the bolts. On their under sides, these locking-members 2 and 3 are provided with recesses which receive springs 4 compressed between walls on the locking-members and studs 5 projecting upwardly from the base 1. These springs 4 are utilized to cast the bolts to the locking position when the bolts are released by a latch which holds them in the retracted position while closing thedoor, as is well understood in the art. On each of the locking-members 2 and 3, is a pin 6 entering an opening in a link' 7,

whose opposite end is provided with a pin a plnion 14 adapted to be rotated by a spiral spring 15 when the sprin is released. The release of the spring is e ected in any suitable manner, preferably by any one of a plurality of time-mechanisms when that mechanism is operated so as to bring it to a predetermined position. When the spring 15 is so released, it acts through the pinion 14 to turn the gear 10 in the direction of the arrow appearing on Fig. 1. In this movement, the ends of the slots 9 engage the pins 8 and thus turn the links 7, moving the pins 12 inwardly against the tension. of their springs 13 and drawing the locking-members 2 and 3 radially inward toward each other against the tension of their castingsprings 4v. When setting the time-mechanisms or other devices controlling the spring 15, the pinion 14 and gear 10 are moved to the positions in which they are shown in Fig. 1, andwhen the locking-members have been cast, they also 4are in the positions in which they are *shown in that figure. In these positions, it will be seen that the pins 8 on the links 7 have been carried slightly past center bythe spring-pressed pins 12.

The form of lock above described is one which is now in common use, and in applying my improved dead-locking device to this lock, I make provision for movement of the locking-members 2 and 3 relatively to the links 7 while the locking-members `still remain in locking position, and, further, so arrange the parts that when the locking-members move inwardly, under the influence of forces acting in some way other than through the links 7, turning movement of the links 7 will be automatically precluded, so that further inward movement of the locking-members, such as n ould carry them to unlocking position, is positively precluded.- This is done in the present instance by providing elongated slots in the links 7, to receive the pins 6, and also by shaping the locking-members 2 and 3 to receive the ends of the links 7 when the locking-members move relatively to the links and positively prevent the turning movement of the links 7 which is incident to withdrawing the locking-members in the usual manner. The elongated slots in the links 7 are indicated at 16, and the depressions in the locking-members 2 and 3 receive the. ends of the links 7 are indicated at 17. Y

Without the dead-locking device herein provided, it would be possible, in a lock of the character described, for the links 7 to be moved slightly, due to a jar lor severe vibration, until the pins 8 moved across center, so as to eliminate the toggle action, and -for the locking-members 2 and 3 to work inwardly, gradually, carrying the links 7 and pins 8 with them against the tension of springs 4 and 13, until the locking-members were 1n the unlocking position and the door ofthe safe was released. Such movement of the locking-members would reduire that they be held in some way after each minute i step of the movement, but this might take place, as by the coaction of a tapered sur-1 1 locking-members 2 and 3 to move them radially inward would cause them to so move relatively to the links 7, the pins 6 moving in the slots 16 and the non-adjacent ends of the links 7 passing farther into the depressions 17. If during the first inward movement of the locking-members the links 7 were moved about the pins 6 sufficient to destroy the toggle action, as wassupposed in the case of the old construction, there would be nothing to hold them in such positions, and they would be forced back to the positions illustrated by the springs 13. Such inward movement ofthe locking-members 2 and 3 might be continued until the pins 6 arrived at the adjacent ends of the slots 16 and the non-adjacent ends of the links 7 were at the ends of thedepressions 17, as indicated in Fig. 4. Such movement of the locking-members 2 and 3 would be insuiicient to carry them to unlocking position and the door would still be held closed. When this relation of the parts has been reached, any rocking movement whatever of the links 7 is positively precluded, so that further inward movelnent of the lockingmembers is prevented. This is due to the fact that the non-adjacent ends of the links 7 fit snugly in the depressions 17 in the locking-members 2 and 3, so that turning movement of the links 7 about the pins 6 is impossible. Even the spring 15, if released, cannot withdraw the locking-members 2 and S'directly from the Fig. 4 positions. The locking-members must first be restored to the positions in which they are completely cast, as shown in Fig. 1, and may then be withdrawn in the ner.

It will thus be seen that forces acting directly upon the locking-members can move those members inwardly only to a definite extent, .which is insulcient to carry them to unlocking position, and that thereupon the mechanism controlling the movements of the. locking-members becomes v'positively locked, so that further inward movement 'of the locking-members is electually prevented. This check to the inward movement -of the locking-members is provided not by yielding devices, such as springs, which may be overcome if the force acting 'upon the locking-members is suhciently severe V and is repeated a suiiicient number of times;

but is providedbypositive obstruction'of the further inward movement of the lockingmembers, which cannot be removed in any way except by an outward movement of the usual man- Y locking-members toward their initial locking positions.

Having now described my invention, what I claim as new therein and desire to secure by Letters Patent is as follows 1. The combination of a locking-member movable to locking and an operating device for moving said member from locking to unlocking position, and mea-ns actuated by movement of said member from locking position in the direction in which it is moved to unlock the door but not into unlocking position for preventing continued movement of the member into unlocking position, substantiall as set forth.

2. The combination o a locking-member movable to locking and unlocking positions, an operating device for moving said member from locking to unlocking position, and means actuated by movement of said member from locking position in the direction in which it is moved to unlock the door but not into unlocking position for preventing operation of sald operating device, substantially as set forth.

3. The combination of a locking-member movable to locking and unlocking positions, a rotary operatin device for moving said member from locklng to unlocking position, and means actuated by movement of said member while in locking position unaccomanied by rotation of said operating device or preventing movement of the member to unlocking posltion, substantiall as set forth. 4. The combination of a loc ing-member movable to locking and unlocking positions,

a casting spring for movmg the member to locking position, an operating device for moving the member to unlocking position,

and means actuated by movement ofthe member from locking position against the y Copies of this patent may be obtained for unlocking positions,

tension of the casting spring toward but not into unlocking position by force applied to the member otherwise than through said 0perating device for ositively preventing movement of the mem er to unlocking position, substantially as set forth. A Y

5. The combination of a movable lockingmember, a rotary actuating device therefor, a link connected to said device and said member and normall free to turn relatively to said member, an means for precluding turning movement of said link relatively to said member under predetermined conditions, substantially as set forth.

' 6. The combination of a movable lockingmember, a rotar actuatin device therefor, a link connecte to said evice, a pin-andslot connection between said link and said member, said link being freely movable relatively to said member when said pin is in one position in its slot and movable only in the direction of the slot when the pin is in another position in the slot, substantially as set forth.

7 The combination of a movable lockingmember, a rotary actuating device therefor, a link connect-ing said member and device, said link turning relatively to said member when said device is actuated to move the member to unlocking position, and means for preventing turning of said link relatively to said member when the member is moved toward unlocking osition by force applied thereto otherwise t an through said link, substantially as set forth.

This speciiication this 28 day of November 1910.

oRLANDb W. BEDELL.

Witnesses:

WILLIAM D. VooRHEEs, WM. S. DUNCAN.

v five cents each, by addressing the Commissioner of Patents,

Washington, ID. C.

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