US878607A - Door-check. - Google Patents
Door-check. Download PDFInfo
- Publication number
- US878607A US878607A US1907400713A US878607A US 878607 A US878607 A US 878607A US 1907400713 A US1907400713 A US 1907400713A US 878607 A US878607 A US 878607A
- Authority
- US
- United States
- Prior art keywords
- door
- check
- knob
- cairns
- chain
- 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
- 238000010276 construction Methods 0.000 description 1
Images
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
Definitions
- the object of thisinvention is to produce an article of simple and cheap construction, that cannot be detached from the opened. door, in opposition to the wishes of the occupant of the room, by an individual on the outside reaching through the opening.
- This invention relates to means for checking doors in a partially opened position, in which a horizontally operated chain terminating in a slip loop is used, in connection with a knob and door casing.
- Figure 1 is a perspective view of my door check in an unused position
- Fig. 2 is a detailed perspective View on a larger scale.
- a sleeve l Fig. 2 is provided with a lug 2 and hole 3, to which chain 4 is fastened and on which it is free to move, forming thereby the slip loop 5 onthe inside of knob 6, around knob shank 7, which in conjunction with screw eye 8, effectually checks the door in a manner that does not permit of it being readily detached from the outside.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Peptides Or Proteins (AREA)
- Paper (AREA)
Description
110.. 8783307. PATENTED FEB. 11. 1908.
A. CAIRNS. DOOR CHECK.
, APPLICATION FILED NOV.4. 1907.
Jijzzesses i Invenaf:
ALEXANDER CAIRNS, OF ST. LOUIS, MISSOURI.
DOOR-CHECK.
Specification of Letters Patent.
Patented Feb. 11, 1908.
Application filed November 4:. 1907. Serial No. 400.713.
To all whom it may concern:
Be it known that I, ALEXANDER CAIRNs, a resident of St. Louis, in the county of St. Louis and State of Missouri, have invented a new and Improved Door-Check, of which the following is a full, clear, and exact description.
The object of thisinvention, is to produce an article of simple and cheap construction, that cannot be detached from the opened. door, in opposition to the wishes of the occupant of the room, by an individual on the outside reaching through the opening.
This invention relates to means for checking doors in a partially opened position, in which a horizontally operated chain terminating in a slip loop is used, in connection with a knob and door casing. I
Reference is to he had to the accompanying drawings, forming a part of this specification, in which Figure 1 is a perspective view of my door check in an unused position, and Fig. 2 is a detailed perspective View on a larger scale.
For the purpose of checking doors in the improved manner embodied in my invention, a sleeve l Fig. 2 is provided with a lug 2 and hole 3, to which chain 4 is fastened and on which it is free to move, forming thereby the slip loop 5 onthe inside of knob 6, around knob shank 7, which in conjunction with screw eye 8, effectually checks the door in a manner that does not permit of it being readily detached from the outside.
It will lie evident that this novel adjustable loop, accommodates itself toand be comes tighter and more secure from sudden pushing on the exterior, and that it cannot lie removed from the knob while there is tension on the chain. In this respect it differs from door checks having fixed loops, operated in a similar manner and is what I claim as new and useful.
Having now described my invention, what I claim and desire to secure by Letters Patent is I The combination in a door check, of a chain 4. having a slip loop 5, with a sleeve 1, having a longitudinal bore, connected to the door casing and knob, as set forth.
ALEXANDER CAIRNS.
Witnesses:
Gus D. STEELE, M. K. EAsToN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1907400713 US878607A (en) | 1907-11-04 | 1907-11-04 | Door-check. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1907400713 US878607A (en) | 1907-11-04 | 1907-11-04 | Door-check. |
Publications (1)
Publication Number | Publication Date |
---|---|
US878607A true US878607A (en) | 1908-02-11 |
Family
ID=2947049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1907400713 Expired - Lifetime US878607A (en) | 1907-11-04 | 1907-11-04 | Door-check. |
Country Status (1)
Country | Link |
---|---|
US (1) | US878607A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3451708A (en) * | 1968-12-04 | 1969-06-24 | Felton D Brooks | Security apparatus |
US3853343A (en) * | 1973-04-16 | 1974-12-10 | Continental Lektroniks Corp | Burglarproof chain guard |
US4155577A (en) * | 1978-06-12 | 1979-05-22 | Raymond Edward L | Security device |
US4472143A (en) * | 1982-04-23 | 1984-09-18 | Bennett Harvey G | Method for securing doors, and the like |
US4478442A (en) * | 1981-07-24 | 1984-10-23 | Martin Edward J | Safety lock on entrance door |
US4629229A (en) * | 1985-08-12 | 1986-12-16 | Frank Correnti | Door lock device |
US5716084A (en) * | 1996-07-31 | 1998-02-10 | Sanford, Jr.; Jack G. | Door security system |
US20150225989A1 (en) * | 2013-01-22 | 2015-08-13 | Celisa Jeanette Edwards | Portable lock-down system |
US11795741B1 (en) | 2021-05-12 | 2023-10-24 | Nicolas Alexander Fuller | Door holder |
-
1907
- 1907-11-04 US US1907400713 patent/US878607A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3451708A (en) * | 1968-12-04 | 1969-06-24 | Felton D Brooks | Security apparatus |
US3853343A (en) * | 1973-04-16 | 1974-12-10 | Continental Lektroniks Corp | Burglarproof chain guard |
US4155577A (en) * | 1978-06-12 | 1979-05-22 | Raymond Edward L | Security device |
US4478442A (en) * | 1981-07-24 | 1984-10-23 | Martin Edward J | Safety lock on entrance door |
US4472143A (en) * | 1982-04-23 | 1984-09-18 | Bennett Harvey G | Method for securing doors, and the like |
US4629229A (en) * | 1985-08-12 | 1986-12-16 | Frank Correnti | Door lock device |
US5716084A (en) * | 1996-07-31 | 1998-02-10 | Sanford, Jr.; Jack G. | Door security system |
US20150225989A1 (en) * | 2013-01-22 | 2015-08-13 | Celisa Jeanette Edwards | Portable lock-down system |
US11795741B1 (en) | 2021-05-12 | 2023-10-24 | Nicolas Alexander Fuller | Door holder |
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