US505299A - Keyhole-guard - Google Patents
Keyhole-guard Download PDFInfo
- Publication number
- US505299A US505299A US505299DA US505299A US 505299 A US505299 A US 505299A US 505299D A US505299D A US 505299DA US 505299 A US505299 A US 505299A
- Authority
- US
- United States
- Prior art keywords
- key
- guard
- levers
- keyhole
- door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000000875 corresponding Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 210000001699 lower leg Anatomy 0.000 description 4
- 210000002356 Skeleton Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/14—Closures or guards for keyholes
- E05B17/16—Closures or guards for keyholes shaped as pins or key bits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/70—Operating mechanism
- Y10T70/7441—Key
- Y10T70/7915—Tampering prevention or attack defeating
- Y10T70/7955—Keyhole guards
- Y10T70/7977—Key-controlled
- Y10T70/7983—Portable
Definitions
- My improved key-hole guard is adapted to match in the key-hole of any ordinary lock, and to serve as a conveniently applicable guard for obstructing the sight through the key-hole and for preventing the use of any' key by unauthorized persons. It may apply on the door of a room or abuilding, either on the inside or outside thereof. I will describe it as applied to the inside of a door of an apartment having an ordinary keyhole eX- tending through in a straight line. y
- Figure 1 is an elevation partly in vertical section showing my guard in use. The remaining figures are on a larger scale.
- Fig. 2 is a face view with the cover plate removed.
- Fig. 3 is a side elevation of the key.
- Figs. 4 and 5 are edge views of the guard.
- Fig. 6 is an end elevation of a portion, and
- Fig. 7 is an end view of the key.
- A is the main body of the casing, certain portions being designated when necessary by super-numerals, as A.
- a B is the covering plate of the case, secured to the part A by rivets A', A', which extend upward from the bodyA and are received in corresponding holes in the cover-plate B, to strongly hold the cover and maintain the true positions of the parts.
- A2 is a nicely cut screw lying horizontally in the center of the part A, and connected rigidly thereto by a post A3.
- G is a cone properly tapped and fitted as a nut on said screw, the small end being toward the post A3, and the large end being scored, as indicated by g to receive the wings of a key and allow it to be turned thereby, as will appear farther on.
- D D are iiat levers pivoted on separate rivets A A', and extending outward through sufficient slots a a, in the opposite edge of the casing.
- E E are springs secured respectively in the levers D D, which springs acting against a convenient abutting surface in the casing A, urge the levers D D together.
- M is a k ey having wings M M on the front of its tubular shank, adapted to engage in the scores q g in the nut G and turn it.
- a key-hole a is provided in the casing A of proper form to admit this key.
- the shank o f the key is of such length and the construction of the parts in the interior of the lock are such as to allow this key to be revolved and to follow the cone G as it is traversed down the screw by the rotation received through the key. As it moves its conical surface presses against the adjacent inner edges of the levers D D and urges them apart.
- the hooks on the levers engage in the interior of the ordinary lock K, and prevent their removal until my key M shall be again used to rotate the cone G in the opposite direction, and allow the levers D to again spring together.
- the levers D D should be of sufficient length to extend a sufficient distance into the lock to prevent the insertion and operating of akey from the opposite side of the door. It therefore guards effectually against the intrusion of parties from without. It is obvious that my guard may also serve to obstruct, though less effectually, the operating of a key by any unauthorized parties from the same side to which the guard is applied.
- the nut as of conical shape, and prefer such, but do not conne the in vention thereto. It is obvious that spheroidal or other forms may be used, taking care to propsprings E E on opposite sides of the nut, in
Landscapes
- Lock And Its Accessories (AREA)
Description
(N0 Mqdel.)
L. SCHNEIDER. K'BYHULE GUARD.
No 5051299' Patented Sept. 19,1893,
;wf. Wy/( .2, .nugumw L l'" iii v 15 il ff jf W CV M, y,
5f: l I l i Y .//fgyaf UNITED STATES PATENT Errea.
LOUIS SCHNEIDER, OF WILLIAMSPORT, PENNSYLVANIA.
KEYHoLE-GUARD.
SPECIFICATION forming part of Letters Patent No. 505,299, `dated September 19, 1893.
Application filed January 14, 1893. Serial No. 458,353. (No model.)
.To a/ZZ whom it may concern:
Be it known that I, LOUIS SCHNEIDER, a citizen of the United States, residing at Williamsport, in the county of Lycoming and State of Pennsylvania, have invented a certain new and useful Improvement in Keyhole-Guards, of which the following is a specification.
My improved key-hole guard is adapted to match in the key-hole of any ordinary lock, and to serve as a conveniently applicable guard for obstructing the sight through the key-hole and for preventing the use of any' key by unauthorized persons. It may apply on the door of a room or abuilding, either on the inside or outside thereof. I will describe it as applied to the inside of a door of an apartment having an ordinary keyhole eX- tending through in a straight line. y
The accompanying drawings form a part of this specification and represent what I consider the best means of carrying out the invention.
Figure 1 is an elevation partly in vertical section showing my guard in use. The remaining figures are on a larger scale. Fig. 2 is a face view with the cover plate removed. Fig. 3 is a side elevation of the key. Figs. 4 and 5 are edge views of the guard. Fig. 6 is an end elevation of a portion, and Fig. 7 is an end view of the key.
Similar letters of reference indicate corresponding parts in all the figures where they appear. f
A is the main body of the casing, certain portions being designated when necessary by super-numerals, as A.
B is the covering plate of the case, secured to the part A by rivets A', A', which extend upward from the bodyA and are received in corresponding holes in the cover-plate B, to strongly hold the cover and maintain the true positions of the parts.
A2 is a nicely cut screw lying horizontally in the center of the part A, and connected rigidly thereto by a post A3.
G is a cone properly tapped and fitted as a nut on said screw, the small end being toward the post A3, and the large end being scored, as indicated by g to receive the wings of a key and allow it to be turned thereby, as will appear farther on.
D D are iiat levers pivoted on separate rivets A A', and extending outward through sufficient slots a a, in the opposite edge of the casing.
E E are springs secured respectively in the levers D D, which springs acting against a convenient abutting surface in the casing A, urge the levers D D together.
M is a k ey having wings M M on the front of its tubular shank, adapted to engage in the scores q g in the nut G and turn it. A key-hole a is provided in the casing A of proper form to admit this key. The shank o f the key is of such length and the construction of the parts in the interior of the lock are such as to allow this key to be revolved and to follow the cone G as it is traversed down the screw by the rotation received through the key. As it moves its conical surface presses against the adjacent inner edges of the levers D D and urges them apart. The hooks on the levers engage in the interior of the ordinary lock K, and prevent their removal until my key M shall be again used to rotate the cone G in the opposite direction, and allow the levers D to again spring together. The levers D D should be of sufficient length to extend a sufficient distance into the lock to prevent the insertion and operating of akey from the opposite side of the door. It therefore guards effectually against the intrusion of parties from without. It is obvious that my guard may also serve to obstruct, though less effectually, the operating of a key by any unauthorized parties from the same side to which the guard is applied. That is to say, if the occupant of a room on going out, after locking the door, and removing thekey, inserts this guard, and by itsI key M drives the conical nut G forward and eX- tends the levers D, no one can unlock the door until the guard is removed. No ordinary intruder would be likely to have the facilities and skill for introducing Wires or other devices through the key-hole o. and turning the cone G, which is necessary to remove my guard before operating the ordinary lock to open the door. When the proper occupant of the room returns the key M being inserted the guard is removed easily. Where, as in many cases, a key-hole opens only on one side of the door, the device can still be applied in that manner.
Moditications may be made in the details Without departing from the principle or sacricing the advantages of the invention. I can vary the number and arrangement of the hooks on the levers D. The slight notches d, which are adapted to engage the casin g of the lock adjacent to the key-hole, may be omitted, or if such notches are employed and engaged reliably With the casing of the lock, the hooks nearer the ends of the levers may be omitted. It is important that one or both of the levers D D shall extend sufficiently in- Ward to prevent the insertion of the ordinary key or even a skeleton key from the opposite side of the door. The casing may be made in more than two parts. The parts may be secured together by other means than those shown. The scores in the nut G may be varied in size and arrangement, the key being correspondingly modified, so that the diversities in the guards and keys Will tend by Wellknown principles, to prevent the use of any but the proper key in removing the guard.
I have shown the nut as of conical shape, and prefer such, but do not conne the in vention thereto. It is obvious that spheroidal or other forms may be used, taking care to propsprings E E on opposite sides of the nut, in
combination with each other and With the key M and provisions as the Wings h on the key and score g on the nut for engaging these parts to open and close the levers, all arranged for joint operation substantially as herein specified.
In testimony that I claim the invention above set forth I affix my signature in presence of two Witnesses.
LOUIS SCHNEIDER.
Vitnesses:
F. H. McOoRMIcK, CARL HERDIC.
Publications (1)
Publication Number | Publication Date |
---|---|
US505299A true US505299A (en) | 1893-09-19 |
Family
ID=2574134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US505299D Expired - Lifetime US505299A (en) | Keyhole-guard |
Country Status (1)
Country | Link |
---|---|
US (1) | US505299A (en) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5493878A (en) * | 1992-01-24 | 1996-02-27 | Kensington Microware Limited | Computer physical security device |
WO1996007002A1 (en) * | 1994-08-26 | 1996-03-07 | Kensington Microware Limited | Security device for a portable computer |
WO1996015347A1 (en) * | 1994-11-15 | 1996-05-23 | Kensington Microware Limited | Computer physical security device |
WO1996024736A1 (en) * | 1995-02-08 | 1996-08-15 | Kensington Microware Limited | Computer physical security device |
US5787739A (en) * | 1996-07-15 | 1998-08-04 | Acco Brands, Inc. | Security hole fastening device |
US5983679A (en) * | 1998-11-17 | 1999-11-16 | Micro Security Devices, Inc. | Portable anti-theft locking anchor |
US6000252A (en) * | 1992-01-24 | 1999-12-14 | Acco Brands, Inc. | Computer physical security device |
US6173591B1 (en) | 1996-07-15 | 2001-01-16 | Acco Brands, Inc. | Security hole fastening device |
US6662602B1 (en) | 1996-11-08 | 2003-12-16 | Acco Brands, Inc. | Security device for a portable computer |
US6735990B1 (en) | 1992-01-24 | 2004-05-18 | Acco Brands, Inc. | Computer physical security device |
US6779370B2 (en) | 2002-02-27 | 2004-08-24 | Belkin Components | Security device, method of manufacturing the same, and method of operating the same |
US7100404B2 (en) | 1993-10-15 | 2006-09-05 | Acco Brands Usa Llc | Computer physical security device |
US7111479B2 (en) | 1992-01-24 | 2006-09-26 | Acco Brands Usa Llc | Computer physical security device |
US7191623B2 (en) | 2003-07-23 | 2007-03-20 | Acco Brands Usa Llc | Computer physical security device with retractable cable |
US7204106B2 (en) | 2001-08-13 | 2007-04-17 | Acco Brands Usa Llc | Portable electronic device physical security |
US7234326B1 (en) * | 2006-06-05 | 2007-06-26 | Miz Engineering Ltd. | Lock device |
US7401481B1 (en) * | 2007-04-18 | 2008-07-22 | Jui Kuo Key-Making Co., Ltd. | Lock device for notebook computer |
US7409842B2 (en) | 2002-07-24 | 2008-08-12 | Acco Brands Usa Llc | Lock for securing an article on display |
US7415852B1 (en) | 2004-10-06 | 2008-08-26 | Acco Brands Usa Llc | Tubular lock with theft deterrent |
US7500371B2 (en) | 2005-11-18 | 2009-03-10 | Acco Brands Usa Llc | Locking device with passage |
US7614266B2 (en) | 2007-10-15 | 2009-11-10 | Acco Brands Usa Llc | Security apparatus with reset mechanism |
US20100180648A1 (en) * | 2007-08-30 | 2010-07-22 | Stefan Knox | Security attachment and method for use with a security slot, e.g. in a laptop computer |
US7997106B2 (en) | 2009-05-29 | 2011-08-16 | Acco Brands Usa Llc | Security apparatus including locking head and attachment device |
USD651889S1 (en) | 2011-04-19 | 2012-01-10 | Acco Brands Usa Llc | Security apparatus |
US8230707B2 (en) | 2007-05-25 | 2012-07-31 | ACCO Brands Corporation | Security system with lock interface member with multiple apertures |
US8707744B2 (en) * | 2012-06-22 | 2014-04-29 | Sinox Co., Ltd. | Lock having simplified structure |
US20140245798A1 (en) * | 2013-03-04 | 2014-09-04 | Christopher V. Beckman | Add-Lock |
GB2583563A (en) * | 2019-02-04 | 2020-11-04 | Sinox Co Ltd | Lock device |
US20220235585A1 (en) * | 2021-01-22 | 2022-07-28 | Sinox Co., Ltd | Lockset |
US20230062089A1 (en) * | 2020-02-05 | 2023-03-02 | Lupex Japan Inc. | Anti-theft connector for equipment |
US20230139662A1 (en) * | 2021-11-04 | 2023-05-04 | Jin Tay Industries Co., Ltd. | Universal security lock for portable electronic devices and engaging mechanism thereof |
-
0
- US US505299D patent/US505299A/en not_active Expired - Lifetime
Cited By (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6155088A (en) * | 1992-01-24 | 2000-12-05 | Acco Brands, Inc. | Computer physical security device |
US7143614B1 (en) | 1992-01-24 | 2006-12-05 | Acco Brands Usa Llc | Computer physical security device |
US6000251A (en) * | 1992-01-24 | 1999-12-14 | Acco Brands, Inc. | Computer physical security device |
US6588241B1 (en) | 1992-01-24 | 2003-07-08 | Acco Brands, Inc. | Computer physical security device |
US6553794B1 (en) | 1992-01-24 | 2003-04-29 | Acco Brands, Inc. | Computer physical security device |
US7100403B2 (en) | 1992-01-24 | 2006-09-05 | Acco Brands Usa Llc | Computer physical security device |
US5493878A (en) * | 1992-01-24 | 1996-02-27 | Kensington Microware Limited | Computer physical security device |
US6000252A (en) * | 1992-01-24 | 1999-12-14 | Acco Brands, Inc. | Computer physical security device |
US5502989A (en) * | 1992-01-24 | 1996-04-02 | Kensington Microware Limited | Computer physical security device |
US7111479B2 (en) | 1992-01-24 | 2006-09-26 | Acco Brands Usa Llc | Computer physical security device |
US6735990B1 (en) | 1992-01-24 | 2004-05-18 | Acco Brands, Inc. | Computer physical security device |
US7201029B2 (en) | 1993-10-15 | 2007-04-10 | Acco Brands Usa Llc | Computer physical security device |
US7100404B2 (en) | 1993-10-15 | 2006-09-05 | Acco Brands Usa Llc | Computer physical security device |
US20060288745A1 (en) * | 1993-10-15 | 2006-12-28 | Acco Brands Usa Llc | Computer physical security device |
US6112561A (en) * | 1994-08-26 | 2000-09-05 | Acco Brands, Inc. | Security device for a portable computer |
WO1996007002A1 (en) * | 1994-08-26 | 1996-03-07 | Kensington Microware Limited | Security device for a portable computer |
WO1996015347A1 (en) * | 1994-11-15 | 1996-05-23 | Kensington Microware Limited | Computer physical security device |
WO1996024736A1 (en) * | 1995-02-08 | 1996-08-15 | Kensington Microware Limited | Computer physical security device |
US6006557A (en) * | 1995-02-08 | 1999-12-28 | Acco Brands, Inc. | Computer physical security device |
US6301940B1 (en) * | 1996-07-15 | 2001-10-16 | Acco Brands, Inc. | Security hole fastening device |
US6173591B1 (en) | 1996-07-15 | 2001-01-16 | Acco Brands, Inc. | Security hole fastening device |
US5787739A (en) * | 1996-07-15 | 1998-08-04 | Acco Brands, Inc. | Security hole fastening device |
US6662602B1 (en) | 1996-11-08 | 2003-12-16 | Acco Brands, Inc. | Security device for a portable computer |
US6321579B1 (en) | 1998-11-17 | 2001-11-27 | Micro Security Devices Inc. | Portable anti-theft locking anchor |
WO2000029700A1 (en) * | 1998-11-17 | 2000-05-25 | Micro Security Devices, Inc. | Portable anti-theft locking anchor |
US5983679A (en) * | 1998-11-17 | 1999-11-16 | Micro Security Devices, Inc. | Portable anti-theft locking anchor |
US7204106B2 (en) | 2001-08-13 | 2007-04-17 | Acco Brands Usa Llc | Portable electronic device physical security |
US6971254B2 (en) | 2002-02-27 | 2005-12-06 | Belkin Components | Security device, method of manufacturing the same, and method of operating the same |
US20050022566A1 (en) * | 2002-02-27 | 2005-02-03 | Bellow Stephen Lester | Security device, method of manufacturing the same, and method of operating the same |
US6779370B2 (en) | 2002-02-27 | 2004-08-24 | Belkin Components | Security device, method of manufacturing the same, and method of operating the same |
US7409842B2 (en) | 2002-07-24 | 2008-08-12 | Acco Brands Usa Llc | Lock for securing an article on display |
US7191623B2 (en) | 2003-07-23 | 2007-03-20 | Acco Brands Usa Llc | Computer physical security device with retractable cable |
US7647796B2 (en) | 2003-07-23 | 2010-01-19 | Acco Brands Usa Llc | Computer physical security device with retractable cable |
US7415852B1 (en) | 2004-10-06 | 2008-08-26 | Acco Brands Usa Llc | Tubular lock with theft deterrent |
US7730751B2 (en) | 2005-11-18 | 2010-06-08 | Acco Brands Usa Llc | Locking device with passage |
US7500371B2 (en) | 2005-11-18 | 2009-03-10 | Acco Brands Usa Llc | Locking device with passage |
US7963132B2 (en) | 2005-11-18 | 2011-06-21 | Acco Brands Usa Llc | Locking device with passage |
US7234326B1 (en) * | 2006-06-05 | 2007-06-26 | Miz Engineering Ltd. | Lock device |
US7401481B1 (en) * | 2007-04-18 | 2008-07-22 | Jui Kuo Key-Making Co., Ltd. | Lock device for notebook computer |
US8230707B2 (en) | 2007-05-25 | 2012-07-31 | ACCO Brands Corporation | Security system with lock interface member with multiple apertures |
US20100180648A1 (en) * | 2007-08-30 | 2010-07-22 | Stefan Knox | Security attachment and method for use with a security slot, e.g. in a laptop computer |
US7614266B2 (en) | 2007-10-15 | 2009-11-10 | Acco Brands Usa Llc | Security apparatus with reset mechanism |
US7997106B2 (en) | 2009-05-29 | 2011-08-16 | Acco Brands Usa Llc | Security apparatus including locking head and attachment device |
US8001812B2 (en) | 2009-05-29 | 2011-08-23 | Acco Brands Usa Llc | Security apparatus including locking head |
US8042366B2 (en) * | 2009-05-29 | 2011-10-25 | Acco Brands Usa Llc | Security apparatus including attachment device |
USD660682S1 (en) | 2011-04-19 | 2012-05-29 | Acco Brands Usa Llc | Security apparatus |
USD661975S1 (en) | 2011-04-19 | 2012-06-19 | ACCO Brands Corporation | Attachment device for security apparatus |
USD651889S1 (en) | 2011-04-19 | 2012-01-10 | Acco Brands Usa Llc | Security apparatus |
USD670553S1 (en) | 2011-04-19 | 2012-11-13 | ACCO Brands Corporation | Attachment device for security apparatus |
US8707744B2 (en) * | 2012-06-22 | 2014-04-29 | Sinox Co., Ltd. | Lock having simplified structure |
US20140245798A1 (en) * | 2013-03-04 | 2014-09-04 | Christopher V. Beckman | Add-Lock |
GB2583563A (en) * | 2019-02-04 | 2020-11-04 | Sinox Co Ltd | Lock device |
GB2583563B (en) * | 2019-02-04 | 2021-10-13 | Sinox Co Ltd | Lock device |
US11434659B2 (en) | 2019-02-04 | 2022-09-06 | Sinox Co., Ltd | Lock device |
US20230062089A1 (en) * | 2020-02-05 | 2023-03-02 | Lupex Japan Inc. | Anti-theft connector for equipment |
US20220235585A1 (en) * | 2021-01-22 | 2022-07-28 | Sinox Co., Ltd | Lockset |
US20230139662A1 (en) * | 2021-11-04 | 2023-05-04 | Jin Tay Industries Co., Ltd. | Universal security lock for portable electronic devices and engaging mechanism thereof |
US12012784B2 (en) * | 2021-11-04 | 2024-06-18 | Jin Tay Industries Co., Ltd. | Universal security lock for portable electronic devices and engaging mechanism thereof |
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