US1598286A - Lock - Google Patents

Description

LOCK

Filed Jan. 9, 1925 gar/111111,

INVENTOR A.E. LaMam/z ATTORNEY Patented Aug. 31, 1926.

warren s'rras ALBERT E. LA MARSH, 01F BBGOKLYN, NEW" YORK.

LopK.

Application filed January 9, 1925. Serial No. 1,368.

The main object of this invention is to provide a door lock mounted on a hinge which cooperates with the hasp and locks the door in closed position by cooperating with said hasp. In the usual design, the hasp is exposed and may be removed by a hack saw or similar tool by an unauthorized person. lVith this device, however, the lock is mounted on. the hinge and covers the hasp in locked position so that access may not be gained to the hasp to sever or damage the same.

This and other objects will become apparent in the description below, in which charactors of reference refer to like-named parts in the drawing.

Referring briefly to the drawing, Figure 1 is a top plan View of the device, showing the same mounted on a door.

Figure 2 is a sectional elevational view of the same.

Figure 3 is a fragmentary sectional elevational view similar to Figure 2, showing the lock in released position.

Figure 4 is a sectional elevational view thru the rear portion of the locking device, the section being taken on line 11 of Fig ure 1.

Figure 5 is a perspective view of the key 30 operated trip lever.

Referring in detail to the drawing, the

- numerals and 11 indicate a pair of doors which are hinged at their opposite sides. On the door 10, a hinge plate 12 is rigidly mounted and is provided with a hinge sleeve 13 at one end which cooperates with a pair of hinge sleeves 1 1, part of a floating hinge plate 15. The hinge plate 15 extends from the sleeves 14 across the junction of the doors 10 and 11 and at its opposite end has a slot 16 thru which a hasp 17 is adapted to extend. Said hasp is anchored on the surface of the door 11 by a block 18 and is re tained in such position by the bracket that it may be slid horizontally therein to permit a slight adjustment of the hasp. It may be noted that the hinge plate is pivoted on the door 10 and the hasp is mounted on the opposite door 11, thus when the hinge plate and hasp are interlocked, the doors 10 and 11 may not be opened. The long hinge plate 15 has a casing which is open at the bottom and is provided with side walls 19 and a top 20. The casing has an internal shoulder formed on the walls 19 and lugs 21. are raised on the surface of the hinge .roof 20 of the plate 15 and receive screws to rigidly secure the casing on the hinge plate 15. The casing forms the chamber 22 between the roof and the upper surface of the hinge plate 15, and in this chamber, a locking plunger 28 is slidably mounted between a pair of pins 2 1 and 25. The forward end of the plunger 23 has an inclined nose 26 which is rounded at the edge and is adapted to contact with the hasp to cause theplunger to retract when the hinge plate is being rotated downwardly toward the hasp. The rear end of the plunger has a plate 27 secured thereto and extends rearwardly having an up-turned end 28 at the end which cooperates with a flat resilient spring 29, the latter being mounted above the up-turned end 28 and aids in retaining the plunger and member 27 in slidable position on the surface of the hinge plate 15. From the forward end of the bracket 27, an arm 30 extends sidewise and is provided with an opening at its outer end which is slidably mounted on a fixed rod 31, the rod being retained in place in the ears 32 which extends upwardly from the ends of a plate 38. The rod 31 has a coil spring 34: mounted thereon and is adapted to urge the arm 30 of the bracket 27 forwardly so that the plunger normally is engaged in the loop of the hasp 17. Adjacent to and to one side of the bracket 27, a stud 35 projects upwardly and is exposed thru a key opening 36 formed in the casing. mounted on the surface of the long hinge plate 15 and has a key operated lever 37 rotatably mounted thereon. On one side of the lever, an open channel 38 is created by an angular extension 89. Into this channel, the width and the length of the key registers so that if a person were to attempt to rotate the lever with a key which does not fit into this channel, he would have great diiiiculty.

In using the lock when the same is in closed position as indicated in Figures 1 and 2, in which figures, the plunger 23 is shown inserted into the loop of the hasp 17, it is necessary to unlock the device in order to 1 open the doors. Unlocking is accomplished by the key operated means which is actuated by the key 40 being inserted thru the key opening 36 over the stud, it being noted that a hollow key is necessary with this look. The 110 end 41 of the key is of an exact size which would fit into the open channel 38 and this This stud is rigidly on end ll is fitted into said channel after the key has been inserted thru the root and partly rotated so that it rests upon the surface of the lever 37. The key is further rotated until the portion ll of said key enters into the channel 38 after Whichsaid key may be rotated in a counter-clockwise direction, and when so doing, will engage the rip-turned end 28 of the bracket 37 and thus retract the plunger so that the nose 26 is disengaged from the hasp and the entire lock may be rotated about the hinge sleevesin the inani'aer shown in Figure 3, after which the doors may be independently opened;

I claim A device of the class described comprisinga folding hinge having a projecting end covering the hinge plate anchored to the door or the like, a hasp cooperating with said projecting end and normally covered by the latter, a casing mounted on the projectingend or said hinge adapted to receive aid hasp, a plunger slidable in said casing and adapted to engage said hasp, a pin on each side of said plunger forming a guide for the latter, said plunger being slidable in said casing, a bracket slidable in said casing and fixed to said plunger, an arm extending at right angles from said bracket, a rod fix ,d to said arm and extending longitudi hall in the casing ears rigid in said casingsupporting said rod, and a coil spring i'nounted on said rod engaging said arm on the bracket-and adapted to yieldably extend said plunger, said ears and rod being oil'- set from the bracket, a stud mounted on said hinge plate, a key operated lever rotatable on said stud, a curved nose on said lever engageable with said bracket when retracting said plunger from engagement with the haspn In testimony whereof I affix in signature.

ALBERT E. LA MARSH.

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