Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1909393 A
Publication typeGrant
Publication dateMay 16, 1933
Filing dateApr 9, 1930
Priority dateApr 9, 1930
Publication numberUS 1909393 A, US 1909393A, US-A-1909393, US1909393 A, US1909393A
InventorsWilliam F Diesel
Original AssigneeSargent & Greenleaf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1909393 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

W. F. DIESEL May 16, 1933.


Filed April 9, 19:50


The present invention relates to locks for safe doors and the like and has for its object to provide an improved mechanism by which the lock is guarded or held against release by means requiring the use of a control clement detachably associated with said means and which can be placed` in the hands of a person entrusted with the control of the safe to prevent unauthorized persons from obtaining access to the contents thereof.V

A further object of the invention is'to provide in conjunction with a combination or other lock for safes, containers, and the like, an improved arrangement of parts by which access to the safe through an attempt to manipulate the combination is frustrated by preventing operation of the actuating element of the combination lock.

A further object of the invention is to provide an improved key controlled lock for guarding the combination locks of 'safe doors and the like and in which the locking element for protecting the combination lock and its keeper are isolated and anchored in such a manner `as to make removal of the same extremely diflicult.

A further object of the invention is to provide a locking element for the spindle or other operating part of a combination lock for safes and the like and to apply the same to the safe in such a manner that it will remain in locking position should the key lock for controlling the same bev removed from its casing.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawing:

VF ig. l is a fragmentary sectional plan embodying one form of the invention;

Fig. 2 is a front elevation of the operat ing dial and associated parts shown in Fig. l;

Fig. 3 is a fragmentary section drawn to an enlarged scale taken centrally through 1930. Serial No. 442,929.

the lock and showing the spindle locking bolt in operative position;

Fig. 4 is a similar view showing the bolt released; Fig. 5 is a transverse section taken on line 5a-5a of Fig. 3 with the bolt shown in locking position, and

Fig. 6 is a similar view showing the bolt moved to release position. Y Y

Similar reference numerals throughout the several views indicate the same parts.

In the embodiment of the invention illustrated in the drawing, 10 represents a portion of a safe or other container and ll the door or closure therefor. On the inner wall of the safe is provided a keeper l2 for the door locking bolt 13 which is suitably supported and guided preferably in a casing 14C mounted on the yinner face of the door. The permutation or combination lock within the casing may beof any well known type and in the present embodiment includes al plurality of tuinblers l5 having the usual notches 16 therein for receiving the pinrl? on the gate 18, which is pivotallyvconnected with the bolt and arranged to operate the same, the gate being operated to release position by a cam disc 18a or other lsuitable means on the spindle. However, if pre ferr-ed, separate means independent of the combination lock may be provided for shifting the bolt after the combination has been successfully operated. The casing is suit-v ably secured to the door by means which is accessible only when the door is open. The door lis provided with an opening 19 for accommodating the tumbler operating spindle 2O and a sleeve-like member 2l surrounding the spindle and projecting 4forwardly from the casing and having its front end held within one end of a bushing or recessed member 22 forming a keeper for a locking element, the keeper being preferably fiXed permanently to the door in a manner hereinafter described.

The usual dial ring 23 is mounted on the outer face of the door. and is preferably secured theretoy by means of screws 24 as shown in Fig. 3. The dial plate 25 is secured to the spindle operating knob `26 and is rotated by the latter Within the ring in the usual manner when turning the knob to operate the combination. rPhe knob l as an inwardly extending cylindrical non' 27 journaled in a cylindrical poel in the bushing 22, said extension h reduced portion 28 projecting rv" sleeve or tubular member 2 and l to receive the outer end of the spil t Which is threaded therein and held against turning by a pin 29, shown in 4t.

The means for locking the operating knob and spindle against rotation to prevent successful operation of the combination com prises a locking element 30 preferably in the form of a bolt slidable in a transversely 'eX- tending pocket 3l formed in the extension 27 of the knob which is rotatably mounted in the bushing or recessed member 22. The locking element when in securing position projects into a recess 32 formed in the Wall of the bushing, said Wall having one or more abutments 32a for engaging the locking ele-- ment to prevent rotation thereof. A spring 33 tends at all times to urge the bolt or locking element into the recess 32.

Any suitable type of locking means may be used for controlling` the bolt, such, for example, as one of the rotary cylinder type indicated at 34, the key 37 of which controls the tumblers 34a, Fig. 3. The lock is mounted Within the knob 26 Which constitutes a casing therefor and has a groove 35 for receiving a pin 3G projecting through the Wall of the knob casing at a point behind the dial plate and operating,l to prevent reinoval of the lock, which cannot be Withdrawn until the inner end of the spindle 2O is released from engagement With the means for actuating the tumblers of the combination lock. rlhe rotary cylinder is operated by the key in the usual manner and its inner end 38 has an eccentrically arranged stud or projection 39 extending within the recess Ll() formed in the bolt so that in rotating the cylinder from the locking position shown in Fig. 3 the stud will Withdraw the bolt from the recess 32 of the bushing. When the cylinder is rotated in a reverse direction by means of the key to release the bolt the latter will be moved by the spring 33 into locking position as shown in Fig. 3.

Since the stud 39 merely projects loosely into the recess l0 of the bolt it will be obvious that if by any means, unauthorized persons should succeed in removing the cylinder from its casing that the spring will automatically advance the bolt into locking position so that any attempt to gain access to the contents of the safe in this manner will be frustrated.

The casing 26 is provided with oppositely arranged slots 26a; in one of which the tumblers aproject When-the cylinder is locked Within the casing. rlhe enlarged end 27a of the cylinder 1s cut away to form spaced shoulders 28a vhich are arranged to engage a lu on the casino' not shown Which )rojects into the path of said shoulders Whereby to limit rotation of the cylinder When moving it to and from bolt release position.

@ne of the important features of the present invention resides in the lock controlled bolt and keeper construction and the manner of mounting and securing the same upon the safe closure. ln the present illustration the bushing or keeper 22 is positioned within a relatively deep pocket formed Within the door or closure and is rigidly secured therein by any suitable method such, for example, as by electric Welding or by the Well-known shrinking process of heating the surrounding Walls of the pocket and forcing the bushing Within the latter under pressure. This element, therefore, for all practical purposes, becomes a part of the door or closure and is so attached thereto as to make it practically impossible to remove it therefrom. This method of attaching the keeper also applies in cases Where the safe door is formed of front and rear spaced plates or Walls With a` iller therebetween, in Which event the keeper projects rearwardly of the front Wall and may be either Welded thereto or shrunk within an opening formed therein or other- Wise rigidly attached to said Wall in rear of the front portion thereof.

There is also a decided advantage in mounting the keeper in rear of the front face of the closure for in this position it cannot be knocked ofl' by the use of a hammer or other tool. Furthermore, it cannot be driven in since its inner end rests on the shouldered portion al of the closure surrounding the recess i9 therein. Likewise the knob 26 and spindle 2O attached thereto cannot be driven in since the knob is provided With an annular shoulder l2 resting on `the dial ring 23, as shown in Fig. 4t.

The sleeve 2l and bushing 22 constitute a tubular member anchored Within the Wall of the closure and in which the cylinder lock casing 26 is rotatably mounted to control the bolt or looking element 30 which cooperates with the tubular member or that part thereof constituting the bushing to lock the spindle and casing against rotation whereby to prevent operation of the combi nation or other type of lock for the closure secured on the inner face thereof. lVhile the sleeve 2l is shown connected with the bushing or tubular member 22 forming the keeper for the bolt 30, it will be understood that the sleeve 21 may, if preferred, be used only in certain forms of door construction, Where it is necessary to provide a member surrounding the spindle Vto protect the same, Vas in cases `Where the door is constructed of front and rear plates with a filler therebetween. On the other hand, if deemed advisable, the bushing and sleeve may be rigidly connected one with another, as by Welding or otherwise and may be extended either partially or entirely through the safe door as preferred.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive idea is not limited to the precise details disclosed, but is intended to cover all variations and modilications thereof falling within the spirit of the invention or the scope of the appended claims.

I claim as my invention:

l. In combination, a protecting wall comprising a closure having a bore formed therein, a bushing rigidly secured within the bore of said wall, the bushing having a cylindrical pocket formed therein and also having an abutment located at one side oi' the pocket within the bore, a combination lock on the inner face of the closure, a spindle extending within, the closure and operatively connected with the lock, a dial knob having its inner end rotatably seated within the pocket of the bushing and receiving the outer end of the spindle, the latter serving to hold the knob against axial movement in an outward direction, said knob having a shoulder with which the bushing cooperates to prevent inward movement of the knob and spindle, a locking bolt for the knob mounted in a recess formed within the portion of the knob extending within the bushing, a spring within the knob for moving the bolt into locking engagement with the abutment of the bushing, and a key lock secured within the knob against axial movement and having a part for moving the locking bolt to release position against the action of the spring.

2. In combination, a wall forming a closure for a. receptacle, said wall having a transversely extending opening and also having a pocket formed therein and communicating with the opening, a lock for the closure at the inner side thereof, a rigidly connected dial knob and spindle, the latter extending through the opening and operatively connected with the lock, theknob having its inner end rotatably received within the pocket and also having a shoulder cooperating with said wall whereby the knob and spindle are held against axial movement in the direction of the lock, said wall having a recess extending transversely of the pocket and communicating therewith, a bolt slidably engaging the knob and movable into said recess to hold the knob against rotati on, spring means within the knob for moving the bolt to said position, and a key lock secured within the knob against axial moveyment and arranged upon operation to release the bolt. v

3. In combination, a wall forming a closure for a receptacle provided with an opening terminating at one side of the wall in an enlarged pocket, a bushing anchored within said pocket and having an opening communicating with the opening in said wall, said bushing having a recess in its wall communicating with the interior of the bushing, a rigidly connected dial knob and spindle, the latter extending through said opening, and the knob having its inner end rotatably received within the bushing, said bushing serving to hold the knob and spindle against axial movement inwardly of the closure, a bolt slidably engaging the wall of the knob Within that portion thereof disposed Within the bushing, a spring within the knob for moving the bolt into the recess of the bushing to hold the knob against rotation, a lock within the knob for releasing the bolt, and a dial plate associated with the knob and secured on the closure between the bushing and the dial of the knob.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2725739 *Jul 21, 1952Dec 6, 1955Yale & Towne Mfg CoCombination or key operable lock
US3455126 *Dec 23, 1966Jul 15, 1969Keystone Consolidated Ind IncLocking knob for hospital,industrial and institutional cabinets
US4019353 *May 15, 1975Apr 26, 1977Chicago Lock Co.Keeper lock for a slide fastener
US5664448 *May 20, 1996Sep 9, 1997Federal-Hoffman, Inc.Locking door handle
US5879035 *Jan 22, 1997Mar 9, 1999Hoffman Enclosures, Inc.Cabinet latch
US6708538 *Oct 23, 2000Mar 23, 2004Curt A. WalbyDoorknob lock apparatus operable by combination or key
US7266981 *Oct 17, 2003Sep 11, 2007Master Lock Company LlcLocker lock
US7963134Jun 21, 2011Master Lock Company LlcDeadbolt lock
US9003844Dec 13, 2012Apr 14, 2015Master Lock Company LlcCombination locks with improved code-changing features
US20040182120 *Oct 17, 2003Sep 23, 2004Master Lock CompanyLocker Lock
US20050166649 *Feb 3, 2005Aug 4, 2005Master Lock CompanyCombination Deadbolt
US20070266747 *Apr 23, 2007Nov 22, 2007Master Lock Company LlcDeadbolt lock
EP0157961A1 *Mar 27, 1984Oct 16, 1985Sheng-Hu HungImproved locking device of combination lock
U.S. Classification70/445, 70/284, 70/216, 70/DIG.710
International ClassificationE05B37/00
Cooperative ClassificationY10S70/71, E05B37/0031
European ClassificationE05B37/00C