US2816431A - Chain lock for closures - Google Patents

Chain lock for closures Download PDF

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Publication number
US2816431A
US2816431A US632438A US63243857A US2816431A US 2816431 A US2816431 A US 2816431A US 632438 A US632438 A US 632438A US 63243857 A US63243857 A US 63243857A US 2816431 A US2816431 A US 2816431A
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United States
Prior art keywords
chain
door
closure
eye
lock
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Expired - Lifetime
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US632438A
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William J Harney
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/36—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing comprising a flexible member, e.g. chains
    • E05C17/365—Security chains
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/28—Extension link
    • Y10T292/283—Chain
    • 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
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5164—Links to limit opening

Definitions

  • This invention relates to a novel looking unit for hinged closures such as doors and gates and has for its primary object to provide a chain lock by means of which a hinged closure may be locked and unlocked at either an inner or an outer side of the closure and which can be unlocked from either side of the closure only by an authorized person.
  • Another object of the invention is to provide a chain lock by means of which a hinged door or other closure may be ajar while locked but not opened sufliciently to permit a person to pass therethrough, so that the door may be left ajar for ventilation while still being locked so that a person could not pass through the door opening in either direction.
  • Still a further object of the invention is to provide a chain lock which may be utilized as the sole locking means for a hinged closure or as an auxiliary lock for hinged closures such as doors and which are provided with a conventional lock.
  • Still a further object of the invention is to provide a chain lock which may be locked in different adjusted positions to vary the extent that the locked door or closure can be opened, and which may be locked from the inside to prevent any opening of the closure.
  • Figure 1 is a horizontal sectional view through a hinged closure and a part of the closure frame, showing the chain lock applied to the frame and closure and in an unlocked position;
  • Figure 2 is a fragmentary elevational view looking to- Ward a portion of the inner side of the frame and closure and showing the chain lock applied thereto and in a locked position;
  • Figure 3 is an enlarged horizontal sectional view taken substantially along a plane as indicated by the line 3-3 of Figure 2, and
  • Figure 4 is a vertical sectional view, taken substantially along a plane as indicated by the line 4-4 of Figure 2.
  • the chain lock in its entirety is designated generally 6 and includes a lower screw eye 7 and an upper screw eye 8 which are anchored in and project from the inner side of the door frame jamb 9 which is engaged by the free side edge of a door 10, which is hinged at 11 to the other frame jamb 12.
  • the eye of the lower screw eye 7 is smaller than the eye of the upper screw eye 8, and is disposed directly therebeneath.
  • a chain 13 is provided at one end thereof with a link 14 which is longer than the other links of the chain. Said link 14 is engaged with and connected to the eye of the screw eye 7 and extends upwardly therefrom through the eye of the upper screw eye 8, as clearly illustrated in Figures 2 and 4.
  • An upper screw eye 15 and a lower screw eye 16 are J Inite States Patent O ICC anchored in the stile 17 of the door 10, which is located adjacent the jamb 9, and extend from the inner side thereof.
  • the screw eye 16 is disposed beneath and spaced from the screw eye 15, and said screw eyes are spaced preferably two or three inches from the adjacent edge of the door 10, and the screw eyes 7 and 8 are preferably spaced about the same distance from the inner edge of the jamb 9, as illustrated in the drawing.
  • the eyes of the screw eyes 15 and 16 are of a size so that the links of the chain 13 can pass freely therethrough.
  • the door 10 When the chain 13 does not engage the eyes 15 and 16, the door 10 is unlocked, as seen in Figure 1, so that it can be swung to an open position or a closed position.
  • a free end portion 18 of the chain 13 is passed downwardly through the eyes of the screw eyes 15 and 16 and a padlock 19 is then engaged with a link of the chain 13 below the lower screw eye 16.
  • the padlock is sufliciently large so that it cannot be passed through the eye of the lower screw eye 16 and will thus function with the chain and screw eyes to effectively lock the door 10.
  • the padlock 19 may be applied with the door in a fully closed position so as to prevent any upward movement of the chain 13 through the screw eyes 16 and 15 and thus lock the door 10 completely closed.
  • the padlock 19 can also be applied so that the door can be swung to a slightly open or ajar position, as seen in Figures 2 and 3. In this way the door can be locked so that it can he opened slightly for ventilation or other purposes but so that an unauthorized person could not pass in- Wardly or outwardly therethrough with the door locked as seen in Figures 2 and 3, but may be unlocked from either side thereof.
  • an authorized person can reach in through the space between the jamb 9 and door stile 17 to grasp the lower free end 18 of the chain or the padlock 19 for pulling the padlock 19 outwardly through a restricted gap between the jamb and door stile 17, as illustrated by the dotted line position of the door 10 in Figure 3.
  • the padlock 19 can then be removed from the chain 13, so that the door 10 can then be pushed open with the chain 13 sliding upwardly through and out of engagernent with the screw eyes 16 and 15.
  • the padlock 19 may be of any conventional type capable of being opened either with a key or by a combination.
  • the chain lock 6 may be utilized as the sole locking means for the door 10 or may be employed as an auxiliary lock to a conventional door lock. It will also be apparent that the chain lock 6 may be used in conjunction with other types of hinged closures such as gates, and will effectively function to permit a closure to be opened to a desired extent while being maintained locked against entry or exit of a person therethrough.
  • a chain In combination with a hinged closure and a closure frame jamb disposed to be engaged by the free edge of the closure, a chain, means for anchoring an end of the chain to one side of the jamb, an eye fastening anchored to the closure and projecting outwardly from the corresponding side thereof, the other end of the chain passing freely through the eye fastening, and a padlock selectively connected to a link of said other chain end and supported thereby, said padlock being larger than the eye of said fastening and engageable therewith to prevent said other chain end from being drawn back through the eye fastening While the padlock is applied to the chain for looking the closure in a partially closed position such that the padlock is accessible from either side of the closure or in a fully closed position so that the padlock is accessible only from the side of the closure on which the padlock is disposed.
  • a closure lock as in clairn 1 said means for anchoring the end of the chain to the jamb comprising a screw eye anchored to the jamb and connected to an end link of the chain, and a second screw eye anchored to the jamb and through the eye of which said end link extends to prevent disengagement of the screw eyes from the jaznb while engaged by said chain link.
  • a closure lock as in claiin 1 said eye fastening comprising a screw eye, a second screw eye Secured in the closure and projecting from the same side thereof, said chain extending through both screw eyes and said pa-dlock being engaged with the chain to prevent disen- 4 gagement of 'the chain from either screw eye while engaged by the padlock, said chain functionng to prevent disengagement of the screw eyes from the closure while the screw eyes are engaged by the chain.
  • a closure lock as in claim 1, said means anchoring the chain to the inner side of the iamb, and said eye fastening being disposed on the inner side of the closure, and said closure Swinging inwardly and away from said jamb toward an open position.

Description

I Dec. 17, 1957 I w. J. HARNEY 2,816,431
CI-IAlN LOCK FOR CLOSURES William J. Harney, Jersey City, N. J.
Application January 4, 1957, Serial No. 632,438
4 Claims. (Cl. 70-93) This invention relates to a novel looking unit for hinged closures such as doors and gates and has for its primary object to provide a chain lock by means of which a hinged closure may be locked and unlocked at either an inner or an outer side of the closure and which can be unlocked from either side of the closure only by an authorized person.
Another object of the invention is to provide a chain lock by means of which a hinged door or other closure may be ajar while locked but not opened sufliciently to permit a person to pass therethrough, so that the door may be left ajar for ventilation while still being locked so that a person could not pass through the door opening in either direction.
Still a further object of the invention is to provide a chain lock which may be utilized as the sole locking means for a hinged closure or as an auxiliary lock for hinged closures such as doors and which are provided with a conventional lock.
Still a further object of the invention is to provide a chain lock which may be locked in different adjusted positions to vary the extent that the locked door or closure can be opened, and which may be locked from the inside to prevent any opening of the closure.
Various other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing, illustrating 'a presently preferred embodiment thereof, and wherein:
Figure 1 is a horizontal sectional view through a hinged closure and a part of the closure frame, showing the chain lock applied to the frame and closure and in an unlocked position;
Figure 2 is a fragmentary elevational view looking to- Ward a portion of the inner side of the frame and closure and showing the chain lock applied thereto and in a locked position;
Figure 3 is an enlarged horizontal sectional view taken substantially along a plane as indicated by the line 3-3 of Figure 2, and
Figure 4 is a vertical sectional view, taken substantially along a plane as indicated by the line 4-4 of Figure 2.
Referring more specifically to the drawing, the chain lock in its entirety is designated generally 6 and includes a lower screw eye 7 and an upper screw eye 8 which are anchored in and project from the inner side of the door frame jamb 9 which is engaged by the free side edge of a door 10, which is hinged at 11 to the other frame jamb 12. The eye of the lower screw eye 7 is smaller than the eye of the upper screw eye 8, and is disposed directly therebeneath. A chain 13 is provided at one end thereof with a link 14 which is longer than the other links of the chain. Said link 14 is engaged with and connected to the eye of the screw eye 7 and extends upwardly therefrom through the eye of the upper screw eye 8, as clearly illustrated in Figures 2 and 4.
An upper screw eye 15 and a lower screw eye 16 are J Inite States Patent O ICC anchored in the stile 17 of the door 10, which is located adjacent the jamb 9, and extend from the inner side thereof. The screw eye 16 is disposed beneath and spaced from the screw eye 15, and said screw eyes are spaced preferably two or three inches from the adjacent edge of the door 10, and the screw eyes 7 and 8 are preferably spaced about the same distance from the inner edge of the jamb 9, as illustrated in the drawing. The eyes of the screw eyes 15 and 16 are of a size so that the links of the chain 13 can pass freely therethrough.
When the chain 13 does not engage the eyes 15 and 16, the door 10 is unlocked, as seen in Figure 1, so that it can be swung to an open position or a closed position. To lock the door with the chain lock 6, a free end portion 18 of the chain 13 is passed downwardly through the eyes of the screw eyes 15 and 16 and a padlock 19 is then engaged with a link of the chain 13 below the lower screw eye 16. The padlock is sufliciently large so that it cannot be passed through the eye of the lower screw eye 16 and will thus function with the chain and screw eyes to effectively lock the door 10. The padlock 19 may be applied with the door in a fully closed position so as to prevent any upward movement of the chain 13 through the screw eyes 16 and 15 and thus lock the door 10 completely closed. The padlock 19 can also be applied so that the door can be swung to a slightly open or ajar position, as seen in Figures 2 and 3. In this way the door can be locked so that it can he opened slightly for ventilation or other purposes but so that an unauthorized person could not pass in- Wardly or outwardly therethrough with the door locked as seen in Figures 2 and 3, but may be unlocked from either side thereof. To unlock the door from the outer side, an authorized person can reach in through the space between the jamb 9 and door stile 17 to grasp the lower free end 18 of the chain or the padlock 19 for pulling the padlock 19 outwardly through a restricted gap between the jamb and door stile 17, as illustrated by the dotted line position of the door 10 in Figure 3. The padlock 19 can then be removed from the chain 13, so that the door 10 can then be pushed open with the chain 13 sliding upwardly through and out of engagernent with the screw eyes 16 and 15. The padlock 19 may be of any conventional type capable of being opened either with a key or by a combination.
By utilizing two screw eyes in the jamb and also in the door, it is impossible for a person to reach through the space between the door and jamb and remove a screw eye from either the door or 'jamb to thus release a chain lock, as might be accomplished if the chain engaged only a single screw eye in the jamb and also in the door.
The chain lock 6 may be utilized as the sole locking means for the door 10 or may be employed as an auxiliary lock to a conventional door lock. It will also be apparent that the chain lock 6 may be used in conjunction with other types of hinged closures such as gates, and will effectively function to permit a closure to be opened to a desired extent while being maintained locked against entry or exit of a person therethrough.
Various modifications and changes are contemplated and may be resorted to, without departing from the function or scope of the invention as hereinafter defined by the apppended claims.
I claim as my invention:
1. In combination with a hinged closure and a closure frame jamb disposed to be engaged by the free edge of the closure, a chain, means for anchoring an end of the chain to one side of the jamb, an eye fastening anchored to the closure and projecting outwardly from the corresponding side thereof, the other end of the chain passing freely through the eye fastening, and a padlock selectively connected to a link of said other chain end and supported thereby, said padlock being larger than the eye of said fastening and engageable therewith to prevent said other chain end from being drawn back through the eye fastening While the padlock is applied to the chain for looking the closure in a partially closed position such that the padlock is accessible from either side of the closure or in a fully closed position so that the padlock is accessible only from the side of the closure on which the padlock is disposed.
2. A closure lock as in clairn 1, said means for anchoring the end of the chain to the jamb comprising a screw eye anchored to the jamb and connected to an end link of the chain, and a second screw eye anchored to the jamb and through the eye of which said end link extends to prevent disengagement of the screw eyes from the jaznb while engaged by said chain link.
3. A closure lock as in claiin 1, said eye fastening comprising a screw eye, a second screw eye Secured in the closure and projecting from the same side thereof, said chain extending through both screw eyes and said pa-dlock being engaged with the chain to prevent disen- 4 gagement of 'the chain from either screw eye while engaged by the padlock, said chain functionng to prevent disengagement of the screw eyes from the closure while the screw eyes are engaged by the chain.
4. A closure lock, as in claim 1, said means anchoring the chain to the inner side of the iamb, and said eye fastening being disposed on the inner side of the closure, and said closure Swinging inwardly and away from said jamb toward an open position.
References Cited in the file of this patent UNITED STATES PATENTS 482,227 Conner Sept. 6, 1892 1,325,538 Smith Dec. 23, 1919 1,476,446 Hoffman Dec. 4, 1923 2,454,794 Hakanson Nov. 30, 1948 FOREIGN PATENTS 21,844 Great Britain Sept. 25, 1912 16,975 Austria July 25, 1904
US632438A 1957-01-04 1957-01-04 Chain lock for closures Expired - Lifetime US2816431A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039289A (en) * 1960-12-21 1962-06-19 Robert O Richardson Detachable door chain
US3081616A (en) * 1960-12-21 1963-03-19 Robert O Richardson Safety lock
US4447080A (en) * 1980-03-31 1984-05-08 Hemmer Clemens J Chain security device
US4560191A (en) * 1983-07-11 1985-12-24 Grassi Julio J Door security device
US4889372A (en) * 1988-05-13 1989-12-26 E. I. Du Pont De Nemours And Company Swing limit apparatus for cargo box doors
US5020840A (en) * 1990-07-11 1991-06-04 Winter Clarence P Gate latch
US7798544B1 (en) * 2006-09-27 2010-09-21 Elwood Bates Door and gate latch with horseshoe handle
US20150204122A1 (en) * 2014-01-22 2015-07-23 Curtis Lee Edwards Portable Lock-down System

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US482227A (en) * 1892-09-06 Door-check
AT16975B (en) * 1903-07-15 1904-07-25 Karl Grundmann Blocking for safety chains attached to doors that can be switched on and off from the outside.
GB191221844A (en) * 1910-10-21 1913-03-13 Henri Marliere Improvements in or relating to Safety Chains for Doors, Windows or the like.
US1325538A (en) * 1919-12-23 Gate-fastening
US1476446A (en) * 1923-12-04 Device eos
US2454794A (en) * 1945-07-31 1948-11-30 Hakanson Alfred Sash holder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US482227A (en) * 1892-09-06 Door-check
US1325538A (en) * 1919-12-23 Gate-fastening
US1476446A (en) * 1923-12-04 Device eos
AT16975B (en) * 1903-07-15 1904-07-25 Karl Grundmann Blocking for safety chains attached to doors that can be switched on and off from the outside.
GB191221844A (en) * 1910-10-21 1913-03-13 Henri Marliere Improvements in or relating to Safety Chains for Doors, Windows or the like.
US2454794A (en) * 1945-07-31 1948-11-30 Hakanson Alfred Sash holder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039289A (en) * 1960-12-21 1962-06-19 Robert O Richardson Detachable door chain
US3081616A (en) * 1960-12-21 1963-03-19 Robert O Richardson Safety lock
US4447080A (en) * 1980-03-31 1984-05-08 Hemmer Clemens J Chain security device
US4560191A (en) * 1983-07-11 1985-12-24 Grassi Julio J Door security device
US4889372A (en) * 1988-05-13 1989-12-26 E. I. Du Pont De Nemours And Company Swing limit apparatus for cargo box doors
US5020840A (en) * 1990-07-11 1991-06-04 Winter Clarence P Gate latch
US7798544B1 (en) * 2006-09-27 2010-09-21 Elwood Bates Door and gate latch with horseshoe handle
US20150204122A1 (en) * 2014-01-22 2015-07-23 Curtis Lee Edwards Portable Lock-down System

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