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Publication numberUS888285 A
Publication typeGrant
Publication dateMay 19, 1908
Filing dateJan 29, 1906
Priority dateJan 29, 1906
Publication numberUS 888285 A, US 888285A, US-A-888285, US888285 A, US888285A
InventorsWilliam R Cunningham, Nathan J Mcaloney, Solomon W Wibel
Original AssigneeWilliam R Cunningham, Nathan J Mcaloney, Solomon W Wibel
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric lock.
US 888285 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 888,285. PATENTED MAY 19, 1908.



APPLIUATION FILED 11111.29, 1906.


No. 888,285. PATENTED MAY 19, 1908. S. W. WIBE L, N. J. MoALONEY & W. R. CUNNINGHAM.



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Application filed January 29, 1906.

To all whom it may concern:

Be it known that we, SOLOMON W. WIBEL, NATHAN J. MeALoNEY, and VVILLIAM R. CUNNINGHAM, all citizens of the United States, residing at the city and county of Denver and State of Colorado, have invented certain new and useful I111 rovements in Electric Locks; and we do dec are the following to be a full, clear, and exact description of theinvention, such as will -enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Our invention relates to electric lock mechanism or more correctly speaking to a lock in which the latch or movable locking device or bolt is moved to the unlocked position through the instrumentality of an electro magnet of any suitable type. Provision is v made whereby a special device is required in trolling electro-magnet is located.

order to close the circuit in which the con- A switch for controlling the circuit may be located at any suitable distance from the place where the door to be unlocked is located.

Our improved mechanism will be described herein with special reference to its use as a lock for car doors, though it must be understood that it may be employed to advantage 11 many other relations where a safety lock is required.

In the use of our mechanism in connection with car doors, it is evident that the means employed may be' considerably varied. The circuit wires may be extended for any desired distance along the track and suitably supported. The car when run anywhere in the vicinity of these wires may be unlocked by the use of a suitable rod or pole having electric conductors running through it and protruding from the top thereof whereby they are adapted to be hooked over the circuit wires. At the opposite extremity of the pole, a key may be connected with these conductors, the same having contacts adapted to bridge the space between electrodes carried by the lock casing, whereby the circuit is' closed through the electro-magnet which acts to move the latch or bolt thus releasing the door. It is evident that other means may be employed between the external circuit and-the magnet circuit for transmitting the current to the latter.

Specification of Letters Patent.

Patented May 19, 1908.

Serial No. 298,424.

external circuit, to the wires of the magnet or internal circuit. Fig. 2 is a fragmentary view of a car showing the lock casing in section, and the lock mechanism in elevation. This view may-be said to be a section taken on the line 2-2 Fig. Fig. 3 is a section taken on the line 33 Fig. 2 looking downwardly. Fig. 4 is a view similar to Fig. 2 but entirely in elevation. Fig. 5 is a perspective view of the key or device for br1dging the electrodes with which the wires of the magnet circuit are connected.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the body of a car provided with a sliding door 6 having a keeper 7 which protrudes into a recess 8 formed in the casing 9 surrounding the door of the car. Mounted on the car adjacent the recess 8, is a casing 10 in which is located an electro-magnet'12.

i As shown in the drawing the locking device proper is of lever-like structure being composed of a bar 12 fulcrumed at 14 on an upright part 13. The forward extremity of this bar is hook-shaped as shown at 15 whereby it is adapted to engage or cooperate with the keeper 7 for locking the door. The extremity-of the bar 12 opposite its locking extremity, consists of a member 16 extending at a suitable angle to the bar 12". The free extremity of this member 16 is provided with an armature plate 17 located in suitable proximity to one extremity of the magnet 12. \Vhen this magnet is deenergized, the locking bar occupies the position shown in full lines in Fig. 2. hen, however, the magnet is energized the electromagnetic force acting on the armature plate 17, throws the locking device to the dotted line position (see Fig. 2), whereby the keeper 7 of the sliding door 1s released, allowing the door to be opened at pleasure.

The lock casing 10 is provided with two separated electrodes 19 which are insulated from each other. These electrodes are of the pole adapted-to engage the wires B and The conductors F and G form a flexible coi1-.

connected with the magnet coils by conductors 21 and 22. The coils of the magnet are normally denergized or inactive.

In Fig. 1 of the drawing a circuit is diagrammatically illustrated comprising an electric source A, conductors B and C leading from the opposite extremities of the source. A switch E is so located that it can only be operated by an authorized person. Assuming that the conductors B and C extend along the track upon which the car 5 is run, a person who desires to open the car door 6, must first make arrangements to have the switch E of the circuit closed. He then takes a g pole D through which run conductors F and G having hook-shaped extremities at one end C. As these conductors run through the pole, they are exposed at the lower end thereof and terminate in contacts Hand I mounted on a block J having a hand piece K.- These contacts H and I are located just far enough apart to bridge the space between the electrodes 19 mounted on the lock casing.

nect-ion between the block J and the pole, thus permitting convenient manipulation of the block for the purpose of closing the magnet circuit. It must be understood that other means may be employed for transmitting the current from the external or main circuit to the wires of the magnet circuit.

From the foregoing description the use and operation of our improved mechanism will be readily understood. Assuming that tliecar door is locked and that it is desired to open the lock, an authorized person first ascertains that the switch E is closed whereby the current from the source passes through the conductors B and G. Then by the use of the, pole D he hooks the conductors F and G over the wires of the main circuit, and applies the contacts H and I to the electrodes 19 of the lock casing thus closing the magnet circuit. The magnet being energized acts upon the armature plate 17 to throw the latch to the dotted line position in Fig. 2, permitting the door of the car to be opened. It is preferred to employ a spring of suitable construction which acts normally to hold the locking device in the locked position. In Fig. 2 of the drawing a leaf spring 20is illustrated. It will be understood that if the locking device occupies a In applying our improved lock mecha'nism to a car or other structure, the lock casing 10 is connected with the wall of the car by means of bolts 23 whose head extremities are concealed within the casing and whose threaded extremities to which the nuts are applied, are located on the inside of the car.

The recess 8 into which the keeper 7 rotrudes as well as the hooked extremity of the locking device, is closed exteriorly' by a plate 24 with which bolts-25 are formed integral. These bolts pass through the wall of the car surrounding the door, and are secured by nuts on the inside. The keeper is also secured by bolts 26 whose head extremities only are exposed, their threaded extremities being located on the inside of the car and suitably secured by nuts. By virtue of this construction an evilly disposed person has no opportuuity to tamper with the mechanism or open the car door, without first closing the magnet circuit and energizing the magnet as heretofore explained.

Having thus described our invention, what we claim is:

The combination with a kee er connected with the part to be secured, a lacking device suitably fulcrumed above the electro-magnet, the locking device having an armature part adapted to be acted on by the energized magnet to operate the locking device, stationary terminals suitably separated and electrically connected with the coils of the magnet, an external circuit, and a portable device adapted to be connected with the external circuit at one extremity and with the terminals of the magnet at the other extremity, to complete the circuit through the magnet coils.

In testimony whereof we aflix our signatures in presence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4580823 *Jun 29, 1983Apr 8, 1986Nissan Motor Company, LimitedLock arrangement for a vehicle sliding door
US4697442 *Oct 18, 1982Oct 6, 1987Stendal Karl EmilLock
US4782674 *Jan 23, 1986Nov 8, 1988Johnson James JLocking means for the doors of trucks vans and the like
DE3249057A1 *Oct 18, 1982Dec 29, 1983Stendals Elektriska AbTitle not available
WO1983001478A1 *Oct 18, 1982Apr 28, 1983Stendals, Karl-EmilLock
International ClassificationE05B47/02
Cooperative ClassificationE05B47/023, E05B47/0002, E05B47/0006, E05B2047/0007
European ClassificationE05B47/00A1, E05B47/02P