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Publication numberUS1958940 A
Publication typeGrant
Publication dateMay 15, 1934
Filing dateJan 18, 1934
Priority dateJan 18, 1934
Publication numberUS 1958940 A, US 1958940A, US-A-1958940, US1958940 A, US1958940A
InventorsAlex Calmeyn, Cavanaugh Glen F, Peter Bruijnooghe
Original AssigneeAlex Calmeyn, Cavanaugh Glen F, Peter Bruijnooghe
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electromagnetic lock
US 1958940 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

y 1934- G. F. CAVANAUGH ET AL 1,958,940

ELECTROMAGNETIC LOCK Filed Jan. 18, 1934 2 Sheets-Sheet l Inventor 5 .lZiUa zrarz day/z Peter 32% zjiw oiz a,

Attorney May 15, 1934.

G. F. CAVANAUGH ET AL ELECTROMAGNETIC LOCK Filed Jan. 18, 1934 2 Sheets-Sheet 2 ffliw'anaugh, fllez LaZm gym, Peter 37% 9720 0 y/za,

Inventors Attorney Patented May 15, 1934 UNITED STATES ELECTROMAGNETIC LOCK Glen F. Cavanaugh, Alex Calmeyn, and Peter Bruijnooghe, Jackson, Mich.

Application January 18, 1934, Serial No. 707,180

1 Claim.

The present invention relates to an electromagnetic lock and is designed for use in banks or the like and the main object of the invention is to provide means whereby a plurality of doors and the like may be locked by the actuating of a switch at a remote point such as teller cage in a bank and thereby prevent bank robberies and the like.

Another very important object of the invention resides in the provision of an electro-magnetic lock of this nature which is exceedingly simple in its construction, inexpensive to manufacture, thoroughly efficient and reliable in use and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention consists in certain novel features of construction, and in the combination and arrangement of parts as will hereinafter be more fully described and claimed.

In the drawings:

Figure 1 is a view showing a portion of a partition such as would be used in a bank illustrating the tellers cage and a door which may be locked by the actuation of a switch at the tellers cage.

Figure 2 is a sectional view taken substantially on the line 22 of Figure 1.

Figure 3 is a detail elevation of the plate on the door frame.

Figure 4 is a detail elevation of the plate on the door.

Figure 5 is a detail section taken substantially on the line 5-5 of Figure'2.

Figure 6 is a diagrammatic view of the lock.

Referring to the drawings in detail it will be seen that the numeral 5 denotes a door and the numeral 6 denotes a door frame. Numeral 7 denotes a tellers cage adjacent which is located a handy switch 8. In a recess provided in the free edge of the door 5 there is a cylinder 9 the inner end of which is closed as at 10 and the outer end of which is open. A bolt 11 is slidable in the cylinder 9 and the inward movement thereof is limited by means of a stop 12. A spring 14 is engaged with the wall 10 and the inner end of the bolt 11 and is tensioned to normally hold the bolt in unlocked position that is in abutment with the stop 12. A plate 15 has an opening receiving the outer end of the cylinder 9 and is mounted in the recess in the free end of the door being secured in place by screws 16.

In the door frame 6 opposite the cylinder 9 when the door is closed there is mounted in a recess an electro-magnet 1'7. A plate 18 is countersunk in the frame and fixed in place by means of screws 19 and has an opening 20 in registry with the cylinder 9 and in registry with the core of the electro-magnet 17. When the electromagnet 1'7 is energized by closing the switch 8 through the circuit 20 the bolt 11 is drawn into the opening 20 thereby locking the door 5 as will be obvious.

It is thought that the construction, operation, utility and advantages of this invention will now be clearly understood without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

In combination with a door and its frame, a keeper plate carried by a side part of the frame and having a keeper hole therein, a cylinder carried by the door, a bolt slidably arranged in the cylinder and having its outer end adapted to enter the keeper opening when the bolt is projected, a spring in the cylinder having one end connected to the inner end of the bolt and its other end to the bottom of the cylinder for holding the bolt retracted, and an electro-magnet carried by the frame with its core having one end closing the inner end of the keeper hole, whereby when said electro-magnet is energized, the bolt will be partly drawn from the cylinder into the keeper hole.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2665933 *Oct 2, 1950Jan 12, 1954Frank W HardwickDoor latching mechanism
US2727772 *Nov 5, 1953Dec 20, 1955Hamilton Alexander WElectromagnetic lock
US2783617 *Nov 5, 1954Mar 5, 1957Halovatch PaulElectromagnetic refrigerator door lock
US2826444 *Sep 22, 1955Mar 11, 1958Kurilenko AlexanderSafety latch for vehicle doors
US2828151 *Jul 18, 1955Mar 25, 1958Brotman MortonSafety lock for vehicle doors
US2844111 *Sep 8, 1955Jul 22, 1958Gen Motors CorpRefrigerating apparatus door control mechanism
US3381312 *Nov 29, 1965May 7, 1968Dean K. WhitlaCleaning system
US4439808 *Jul 28, 1981Mar 27, 1984Bsg (Security) LimitedElectromagnetic lock
US5362116 *Aug 12, 1991Nov 8, 1994David DoyleSelf latching magnetic latching device
US7165792 *Nov 21, 2001Jan 23, 2007Seba - Societe Europeenne De Brevets AutomobilesDevice for improving a vehicle structural rigidity, in particular a vehicle with retractable roof
US7216902Jul 22, 2003May 15, 2007Aldo MarraPortable door lock
US7584704 *Mar 13, 2007Sep 8, 2009Gm Global Technology Operations, Inc.Assembly for aligning and interlocking an electro-monorail system and vertical lift station
US8505989 *Sep 8, 2008Aug 13, 2013Wells Enterprise Australia Pty LtdLatch
US20040070214 *Nov 21, 2001Apr 15, 2004Gerard QueveauDevice for improving a vehicle structural rigidity, in particular a vehicle with retractable roof
US20040222645 *May 29, 2002Nov 11, 2004Walter PironeMagnetic lock device operated by means of transponder
US20050017518 *Jul 22, 2003Jan 27, 2005Aldo MarraPortable door lock
US20050210938 *May 17, 2004Sep 29, 2005David DoyleDevelopments for magnetic latches
US20080223248 *Mar 13, 2007Sep 18, 2008Gm Global Technology Operations, Inc.Assembly for Aligning and Interlocking an Electro-Monorail System and Vertical Lift Station
US20110101706 *Sep 8, 2008May 5, 2011Wells Enterprises Australia Pty LtdLatch
USD647779Nov 1, 2011D & D Group Pty LtdHinge
USD647781Nov 1, 2011D&D Group Pty LtdHandle
USD647782Nov 1, 2011D&D Group Pty LtdLatch
USD649007Nov 22, 2011D & D Group Pty LtdHinge
USD649008Nov 22, 2011D & D Group Pty Ltd.Hinge
USD649009Nov 22, 2011D & D Group Pty LtdHinge
USD661173Jun 5, 2012D&D Group Pty Ltd.Hinge
USD672631Dec 18, 2012D & D Group Pty Ltd.Striker for latch
USD673024Dec 25, 2012D & D Group Pty Ltd.Hinge
USD675080Jan 29, 2013D & D Group Pty LtdHandle
CN101264820BMar 13, 2008Aug 31, 2011通用汽车环球科技运作公司Assembly for aligning and interlocking an electro-monorail system and vertical lift station
EP0045197A1 *Jul 24, 1981Feb 3, 1982Bsg (Security) LimitedElectromagnetic lock
WO2005008006A1 *Dec 29, 2003Jan 27, 2005Miller, JohnPortable door lock
U.S. Classification292/144, 292/177, 109/59.00R, 70/281
International ClassificationE05C19/00, E05C19/16
Cooperative ClassificationE05C19/168
European ClassificationE05C19/16E2