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Publication numberUS767298 A
Publication typeGrant
Publication dateAug 9, 1904
Filing dateApr 6, 1903
Priority dateApr 6, 1903
Publication numberUS 767298 A, US 767298A, US-A-767298, US767298 A, US767298A
InventorsRobert J Louis
Original AssigneeLouis Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Locking mechanism for coin-receptacles.
US 767298 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)





IINTTTED STaTes Patented August 9, 1904.




SPECIFICATION forming' part of Letters Patent No. 767,298, dated August 9, 1904.

Application filed April 6, 1903. Serial No. 151,268. (No model.)

To (1,7/y 707mm, it mfr/7] 0072/067771:

Be it known that I, ROBERT J. LoUIs, of New York, in the county of" New York and State of New York, have invented certain new and useful Improvements in Locking' Mechanism for Coin-Receptacles; and I hereby declare that the following' is afull, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of 10 this specification. l

My invention relates to lockingl mechanism for coin-receptacles.

` One of the objects of my4 inventionis to provide a latch for retaining a receptacleclosure in closed position which is entirely concealed from the exterior of the receptacle, while operable from the exterior thereof.

A further object of my invention is to provide a magnetic latch for receptacle-closures 2O the moving member of which is located within the receptacle but is operable by magnetic influence exerted thereon from the exterior of the receptacle.

A further object of my invention is to providea device of the character described which is simple in construction and efficient in its operation.

Iith a view to attaining' these and other objects, which will become apparent from the following' description, my invention consists in the features of construction and the combinations of properly*constituted parts, substantially as specified in the claims.

One of the useful applications for which my invention is particularly adapted is to provide a locking means for coin-receptacles or small banks.

It is now a common practice for savings in- The latching devices for the receptacle-closure in an embodiment of my invention being entirely concealed and inaccessible from the exterior of the casing, no suggestion is offered by the exterior of the receptacle to one unacqnainted with its interior construction of a means whereby the receptacle may be opened, and it is therefore peculiarly adapted 5 5 for use in connection with coin-receptacles forpurposes such as I have described, as it minimizes the likelihood of the receptacle being opened by unauthorized persons. I have therefore in the present application illustrated my invention as applied to a small coin bank or receptacle; but I do not desire to be understood as limiting my inventionto such application, as it is apparent that it is applicable to widely diverse uses.

In the drawings, Figure l is a central transverse vertical section of a small coin-bank embodying the latch and constructed in accordance with my invention. Fig. 2 is acentral vertical longitudinal section thereof, taken on line 2 2 of Fig. 1. Fig'. 3 is a fragmentary view of part of the casing and the latch illustrated in. Fig. l, showing the positions assumed by the parts when under the influence of an exterior magnet capable of releasing the latch.

Throughout the drawings like numerals of reference refer to like parts.

5 indicates generally a casing constituting a receptacle provided with a door or closure 8O 6, movable to open the receptacle, as by turning' upon a pivot 7. Any style of door may be employed in any desired position and the latch device readily adapted thereto; but I have illustrated a simple arrangement for 8 5 clearness of disclosure.

To mislead the casual observer or the uniformed user of the bank as to the manner of gaining access to the interior thereof. a raised dial and sham combination-'handle 9 may be 90 provided on the front of the receptacle.

lO indicates a coin-receiving aperture.

The latch mechanism is preferably disposed adjacent to one of the walls of the receptacle, illustrated as its rear wall 5'. and said wall 95 or a part thereof adjacent the latch devices is constructed of material permeable to a greater or less extent to magnetic lines of force. The said permeable portion of the casing may be constructed of a diamagnetic l material, such as brass,or it may be made of magnetic material, as iron or the like, of such thinness that it will become magnetically saturated when included in a magnetic lield of between its poles and yet exert suiiicient atconside-rable intensity.

11 indicates a movable latch member of a material susceptible to magnetic influence, such as iron, and of such proportions as to form a good magnet-armatnre, pivoted, as at 12, to suitable projections from the wall 5 of the casing. In the present illustration -support for the pivot 12 is afforded by the side S walls of a shield 13, apertured, as at 14. to

permit the nose 11 of the pivoted latch member to project therethrough, but otherwise completely surrounding the pivoted latch member.

15 indicates the coaeting latchv member having a nose 15, iiXedly secured to the closure 6 of the receptacle in operative relation to the movable member 11. A spring' is suitably arranged to normally hold the movable member of the latch in forward or latching position, such spring being herein indicated as a leaf-spring 16, interposed between the wall 5 ofthe casing and the body of the latch member 11. It will of course be understood that the coacting' latch members are so shaped as to automatically engage when brought together.

Referring now to Fig'. 3, 17 indicates an operating-magnet, herein illustrated as an electromagnet energized by a battery 17.

The operation of my invention in use will be as follows: Then a magnet capable of exerting a sulii cient attractive force is brought into proximity to the wall adjacent the movable latch member 11, the said latch member, acting as an armature, is attracted and flies back against the tension of its spring to its rearmost position, as illustrated in Fig. 3. In such a position its nose 11 no longer engages with the nose of the coacting latch member, so that the door 6 is released and allowed to fall. As soon as the magnet is withdrawn from its position. so that the armature-latch member is no longer under its influence, the spring returns the movable latch member to its normal or operative position, so that when the door 6 is moved to closed position the coacting latch member will again engage.

It will be apparent that the strength of the magnet 1T requisite to retract the armaturelatch member will be dependent upon the quality and thickness of the material employed and the distance of the said latch member from the casing. It will be understood, however, that such a magnet is intended to be employed as will accomplish the desired result.

It may be .found advantageous to make a portion of the wall 5 adjacent the movable latch member of relatively thin magnetic material, which will serve to short-circuit a magnet of little strength, such as the ordinary small permanent magnets in common use, and to employ as the latch-actuating agent a magnet having a field of such intensity that it is capable of saturating the portion of the easing traetive influence upon the armature -latch member to withdraw the same from engagement with the coacting member. Such an arrangement, requiring a more powerful magnet to actuate the latch devices than will be found in an ordinary household, is an effective safeguard against accidental discovery of the secret of opening the receptacle.

The shield 13, covering the movable latch member, obviates the possibility of the contents of the receptacle being jammed against the movable member to' inadvertently actuate it or prevent its proper operation.

Thile I have herein described for purposes of a full disclosure of my invention one operative embodiment thereof, I do not desire to be understood as limiting myself to the exact construction shown, as it will be apparent that many changes in the mechanical embodiment thereof might be made without departing from the spirit and scope of my invention.

Having described my invention, what I claim, therefore, and desire to secure by Letters Patent of the United States, is-

1. In a bank-receptacle, a casing having a front provided with a sham representation of a common means of opening receptacles', a door for closing the casing so disposed as to be wholly concealed when closed,while the casing is in normal position, and a lock for the door wholly concealed within the receptacle and operable by magnetic influence from without the casing.

2. In a bankreceptacle, a casing having a hinged door and a wall permeable to magnetic lines of force arranged adjacent the path of the free edge of the door, a latching-stud carried by the door, a coacting latch member susceptible to magnetic attraction mounted on the permeable wall, and a shield arranged to substantially cover said latch member.

3. In a bank-receptacle, a casing 5 having a wall of material permeable to magnetic lines of force, and a pivoted door 6, a stud 15 carried by the door, a latch member 11, of magnetic material carried by the permeable wall, a spring 16 arranged to normally hold said latch member 11 in position to engage the stud 15, and a shield 13, for the latch member 11, provided with an aperture 14.

In testimony that I claim the foregoing as my own I afIiX my signature in presence of two witnesses.


In presence of- W. CORNELL BENJAMIN, G. D. VVnnKs.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2516994 *May 26, 1945Aug 1, 1950Oldham & Son LtdDevice for protecting electrical contacts against unauthorized access
US2730392 *Nov 12, 1954Jan 10, 1956Nils A ThiebaudMagnetic locking device
US2840405 *Aug 17, 1956Jun 24, 1958Urban J FeltzElectrically-controlled refrigerator door
US2894475 *May 7, 1956Jul 14, 1959Brown Lenox And Company LtdMooring devices for ships
US3873892 *Apr 25, 1974Mar 25, 1975United Aircraft CorpHigh security lock
US4184277 *Jun 2, 1978Jan 22, 1980Emboss-O-Prestige LTEELockable name plate
US4494805 *Nov 29, 1982Jan 22, 1985Glen E. BeymerEquipment locker
US4966020 *Jun 6, 1989Oct 30, 1990880335 Ontario Inc.Locking mechanism
US5368162 *Oct 28, 1991Nov 29, 1994M W Trading ApsSafety device for parallelepipedic box
US5468031 *Apr 22, 1992Nov 21, 1995Mw Trading ApsLock mechanism
US5782350 *May 16, 1997Jul 21, 1998Alpha Enterprises, Inc.Magnetic locking mechanism for a security package
US5904246 *Feb 17, 1998May 18, 1999Alpha Enterprises, Inc.Magnetic locking mechanism for a security package
US6126001 *Nov 2, 1998Oct 3, 2000Alpha Enterprises, Inc.Nestable security package for recorded media
US8757677 *Jul 25, 2008Jun 24, 2014Keba AgLock which can be unlocked in an electrically automated manner, in particular for storage systems like lockers
US20100139338 *Jul 25, 2008Jun 10, 2010Hans-Peter WintersteigerLock which can be unlocked in an electrically automated manner, in particular for storage systems like lockers
Cooperative ClassificationE05B81/20