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Publication numberUS881364 A
Publication typeGrant
Publication dateMar 10, 1908
Filing dateOct 27, 1906
Priority dateOct 27, 1906
Publication numberUS 881364 A, US 881364A, US-A-881364, US881364 A, US881364A
InventorsDaniel Y Wheeler
Original AssigneeDaniel Y Wheeler
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lock-guard.
US 881364 A
Images(1)
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Description  (OCR text may contain errors)

No. 881,364. r PATBNTED MAR. 1o, 190e.

- D. Y. WHEELER.,

LOCK GUARD..

APPLICATION FILED 0013*.2711906.

DY. w

A WITNESSES:

ATTORNEY.

1HE NoRRls PETERs co., ivAsfHNcroN, n. c.

DANIEL Y. WHEELER, OF DENVER, COLORADO.

FFC i LOCK-GUARD Specification of Letters Patent.

Patented March 10, 1908.

Application filed October 27, 1906. Serial No. 340,929.

To all whom it may concern:

Be it known that I, DANIEL Y. WHEELER, a citizen of the United States of America, residin at Denver, in the county of Denver and tate of Colorado, have invented cer,- tain new and useful Im rovements inLock- Guards, of which the fo owing is a specification.

This invention relates to improvements in lock-guards and has for its object to provide a device which when applied to the lock of a door, will eiiectively prevent unauthorized persons from insertin keys or other instruments in the key hole or the purpose of withdrawin the bolt of the lock and opening the door. attain this object by the means illustrated in the accompanying drawings in the various views of which like parts are similarly designated and in which,

Figure l-represents a vertical sectional view of a door with the device in operative position, Fig. 2 a sectional view of the door showing a top view of the device in operative position, Fig. 3 an end view of the assemled members of the device, Fig. 4--a cross sectional vieW of the key member in the position while being inserted in the lock, Fig. 5-a section along the line 5 5, Figs. 1 and 2, Figs. 6 and 7-respectively side and top views of the key member of the device, and Fig. S-a perspective view of the locking member of the ard.

The device as illustrated in the drawing is composed of three cooperative members, two of which, 6 and 7, will for convenience in description, be termed respectively the key member and the locking member, while the third member 8 consists of an ordinary padlock adapted to secure the first named members in their relative positions.

Member 6, resembling in form the ordinary door key, comprises the stem 8, the bit or web 9 which extends laterally from one of its extremities, and the bow 10 which is composed of two parallel disk-like members 10a, secured at the opposite extremity ofthe stem at ri ht angles to the web and provided with axia ly alined apertures 11.

The locking member 7 consists of a iiat blade 12, provided at one of`its extremities with an integral segmental enlargement or head 13 adapted to be inserted in the s ace 14 between the parallel members 1()et ofp the bow 10, and provided with an aperture 15 which when the head is in its'place between the members of bow 10, registers with the diametrically equal openings 11 in the latter.

Blade 12 of the locking member tapers from its head to its opposite extremity or point, one of its edges 12a being tangent to 1 the circumferential edge of the head while its opposite edge 120, tending toward the cent a portion of' the segmental enlargement, intersects its chordal edge 13a, approximately at ri ht angles.

Having tius described the mechanical construction of the device, the manner of using the same is as follows. After the bolt of the lock 18 has been shot by means of the key intended for the purpose, the latter is Withdrawn from the lock and the key member 6 inserted therein through the key hole 16, as shown in Fig. 4, in which 17 designates the door and A19 the escutcheons secured thereto. The stem 8 of the key member is now turned in the eye 16 of the keyhole until its biurcated bow extends in parallel relation and the web or bit 9 in consequence at right angles to the latter. The pointed extremity of the locking member is subsequently inserted in the slot 16C of the keyhole with the edge 12a extending longitudinally along the lower side of the stem 8, until the head 13 has reached the osition in between the diametrically equa members 10,a of the bow and the apertures 11 and 15 are in register. The bow 8a of the padlock 8 is finally passed through the registered apertures 11 and 15 for the purpose of locking the members 7 and 8 of the device in their relative positions, as illustrated in Figs. 3 and 1.

. The device thus secured, effectively bars access to the lock by obstructing the keyhole, while the position of the web at right angles to the slot 16C prevents withdrawal of the key member 6 and the position of the blade through the said slot prohibits turning the latter in the eye 16a.

The contrivance as described is particularly adapted for use in hotels and other public places, as during temporary absence of the occupant of a room, it prevents employees or dishonestly inclined persons to gain access thereto by the use of either du licate and skeleton keys or nippers.

aving thus described my invention what I claim is A guard for preventing the insertion oi keys in key holes, compr1sing a*pair of indel S l of the first member in a plane at right angles to the plane of the bit and into the keyl'lole, said head portions having alining openings for the insertion of' a looking member to prevent their disengagement, substantially as described.

In testimony whereof I have affixed my ignature in presence of two witnesses.

DANIEL Y. IHEEL'ICR. Witnesses K. M. STUMP, G. J. ROLLANDET.

Referenced by
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US4704881 *Dec 2, 1985Nov 10, 1987Sloop Sr Clifford EBarrel lock assembly
US5493878 *Sep 16, 1994Feb 27, 1996Kensington Microware LimitedComputer physical security device
US5502989 *Sep 16, 1994Apr 2, 1996Kensington Microware LimitedComputer physical security device
US5983679 *Nov 17, 1998Nov 16, 1999Micro Security Devices, Inc.Portable anti-theft locking anchor
US6000251 *Oct 15, 1993Dec 14, 1999Acco Brands, Inc.Computer physical security device
US6000252 *Jun 5, 1997Dec 14, 1999Acco Brands, Inc.Computer physical security device
US6006557 *Sep 11, 1997Dec 28, 1999Acco Brands, Inc.Computer physical security device
US6112561 *Nov 8, 1996Sep 5, 2000Acco Brands, Inc.Security device for a portable computer
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US6155088 *Jun 7, 1995Dec 5, 2000Acco Brands, Inc.Computer physical security device
US6227017 *Apr 12, 1994May 8, 2001Darrell A. IgelmundComputer slot security adaptor
US6305199Aug 17, 2000Oct 23, 2001Darrell A. IgelmundComputer slot security adaptor
US6321579Nov 12, 1999Nov 27, 2001Micro Security Devices Inc.Portable anti-theft locking anchor
US6553794Jun 23, 2000Apr 29, 2003Acco Brands, Inc.Computer physical security device
US6588241Dec 24, 1996Jul 8, 2003Acco Brands, Inc.Computer physical security device
US6662602Jun 16, 2000Dec 16, 2003Acco Brands, Inc.Security device for a portable computer
US6735990Dec 29, 1997May 18, 2004Acco Brands, Inc.Computer physical security device
US6779370Feb 27, 2002Aug 24, 2004Belkin ComponentsSecurity device, method of manufacturing the same, and method of operating the same
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US7204106May 18, 2004Apr 17, 2007Acco Brands Usa LlcPortable electronic device physical security
US7234326 *Sep 5, 2006Jun 26, 2007Miz Engineering Ltd.Lock device
US7409842Jan 14, 2005Aug 12, 2008Acco Brands Usa LlcLock for securing an article on display
US7415852Oct 5, 2005Aug 26, 2008Acco Brands Usa LlcTubular lock with theft deterrent
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US7647796Feb 6, 2007Jan 19, 2010Acco Brands Usa LlcComputer physical security device with retractable cable
US7730751Jan 28, 2009Jun 8, 2010Acco Brands Usa LlcLocking device with passage
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US7997106Dec 15, 2010Aug 16, 2011Acco Brands Usa LlcSecurity apparatus including locking head and attachment device
US8001812Dec 23, 2010Aug 23, 2011Acco Brands Usa LlcSecurity apparatus including locking head
US8042366 *Jan 7, 2011Oct 25, 2011Acco Brands Usa LlcSecurity apparatus including attachment device
US8230707May 21, 2008Jul 31, 2012ACCO Brands CorporationSecurity system with lock interface member with multiple apertures
EP1028212A2 *Nov 15, 1994Aug 16, 2000Kensington Microware LimitedComputer physical security device
WO1996015347A1 *Nov 15, 1994May 23, 1996Kensington Microwave LtdComputer physical security device
WO2000001908A1 *Jun 21, 1999Jan 13, 2000Kvaerner Mandal AsLocking device for a hatch or similar structure
Classifications
Cooperative ClassificationE05B17/16