US1215992A - Door-lock. - Google Patents

Description

H. REIN.

DOOR LOCK.

APPLICATION FILED mm. 1. 1916.

1,215,992, I Patented Feb. 13, 1917.

A TTOR/VEYS llbllD PATENT @FFTQE.

HERMAN REIN, OF NEW YORK, N. Y.

DOOR-LOCK.

Application filed March 7, 1916.

To all whom it may concern:

Be it known that I, HERMAN REIN, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Door-Lock, of which the following is a full, clear, and exact description.

This invention relates to builders hardware and has particular reference to locks and latches.

Among the objects of the invention is to provide a door lock of peculiar construction and comprising a slidable bolt having a composite point or end adapted to engage with the lock plate on the door j amb, and of such a nature that it is impossible for the door to be opened surreptitiously by the use of a jimmy or the like.

Another object of the invention is to provide a novel form of door lock whose bolt is held retracted within the lock casing when the door is opened, whereby there is no dangerous projecting member that would tend to catch and tear ones clothing or be otherwise offensive.

A still further object of the invention is to provide means associated with the slidable bolt aforesaid whereby the same is held in its locking or projecting position by means engaging directly with portions of the lock casing.

With the foregoing and other objects in view, the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed herein, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which Figure 1 is a side elevation of the principal parts of the lock mechanism with the bolt projected as in normal locking position and looking from the direction of the striking side of the door;

Fig. 2 is a vertical longitudinal section of the same on the line 22' of Fig. 1;

Fig. 3 is a bottom plan view of the bolt mechanism, parts being in section on the line 3-3 of Fig. 1 but on a larger scale;

Fig. 4 is an outside end view of the bolt with parts in section on the broken line 4.4 of Fig. l; and

Specificationof Letters Eatent.

PatentedFeb. 13, 1917.

Serial No. 52,599.

Figs. 5 and 6 are detached perspective views of the composite bolt hooks.

Referring now more particularly to the drawings I show at 10 a lock casing which may be of any general type but indicated as a mortise lock set into a door 11 and having a face plate 12.

lVithin the casing is arranged a sliding bolt 13 adapted to be operated by any suitable means such as a knob or key and having a composite engaging end 1 1 comprising a pair of jaws 15 and 16 cooperating with each other and mounted upon a pivot 17 and hence adapted for a certain' amount of free movement around a vertical axis within the casing. These jaws are shown in detail in Figs. 5 and 6, one comprising a single bar 18 adapted to operate between a pair of parallel bars 19 of the other'jaw. These bars are adapted to project beyond the casing and end in laterally projecting hooks 18 and 19. The hook 18 projects in one direction, shown herein as toward the strike 20 of the door, and the hooks 19 project in the opposite direction therefrom. The inner end of each jaw comprises a tail piece 21 both of substantially the same length and spaced from each other to accommodate the shank portion 22 of the bolt.

The tail pieces 21 of the jaws are provided with transverse holes 23 into which project a pair of pins 24 carried rigidly by the shank 22, said holes 23 being elongated or elliptical, providing for a certain amount of independent longitudinal movement between the shank and the jaws.

Any suitable means, such as a spring 25, acts 'upon the bolt tending to project the head end 1% thereof from the face plate of the casing, said spring acting upon a lug or projection 26 carried by the shank of the bolt. "While this shank is thus projected, the pins 2-l-bearing against the outer ends of the slots 23 cause the head leito be projected unless restricted in some way from such movement. The design of the jaws is such that when the jaws are projected beyond the casing, the shoulders 21 of the tail pieces 21 wipe against a pairfof lugs 27 formed upon the inner faces of the casing and whereby the jaws are so swung upon the pivot 17 as to cause the hooks 18 and 19 to be forced in opposite directions so as to engage in the rear of the lock plate 28. It will thus be seen that if a tool be forced between the striking edge'of the door and the jamb tending to withdraw the bolt from the jamb, the hooks will engage squarely against the inner face of the jamb plate and prevent such movement or the opening of the door. The ends of the jaws will be maintained in their spread position, as shown in Fig. 2, by positive contact between the shoulders 21 of the tails 2'1. and the lugs 27.

On the lower edge of the bolt are secured a pair of dogs 29 pivoted upon the pivot 17 and acted upon by some means, such as a leaf spring 30, to cause their points to swing outwardly in position to engage against the stop shoulders 27 formed at the outer ends of the lugs 27 when the bolt is fully projected. These dogs are so formed at their common joint as to make a positive lock in one direction to limit their outward swinging movement, but they are free to move inwardly and toward each other except as resisted by the spring 30. To the lower edge of the shank 22 is connected :1 claw device 31 having claws-32 engaging independently of each other with the outer edges of the dogs, the claws being movable along rounded or inclined edges of the dogs whereby,'when a draft is made upon the shank 22 to release the bolt in the normal operation of the device, the claws will wipe inwardly toward the points of the dogs and throw said points toward each other releasing them from the lugs 27. The slots 28 are long enough to provide sutlicient movement of the shank 22 prior to the inward movement of the bolt head 14 to accomplish this releasing action of the dogs. Fig. 3 indicates this action with the dogs released and the head 14 just starting on its inward movement. The continued inward movement of the shank will cause the engagement between the pins 24 and the tail portions of the jaws, and consequently the jaws will be withdrawn from the jamh plate, but at the beginning of such withdrawal movement the ends of the tail portions are forced apart as the shoulders 21 come within the lugs 27, as by means of leaf springs 34 secured to the sides of the shank and having their free ends bearing outwardly against the inner faces of the'tail pieces. The head lt of the bolt will thus be held in such position as to move freely into the casing under the force of the retracting means for the bolt. Likewise the bolt so far as the head is concerned is free to glide outwardly under the force of the actuating means, such as the spring 25, and when the shoulders 21 of the tail pieces wipe against the lugs 27. the head will again open as before described. In this action the shank 22 being pushed by the spring will in turn push outwardly upon the head through the pins 2 1. The claw device 31 will, in this action, not resist the outward swing of the dogs 29 as they ride along and over the lugs 27.

The form of the bolt shown herein adapts it for use with many diflerent types of locks or lock bolt operating devices. Especially is it well adapted for use in connection with some form of retractile catch adapted to automatically lock the bolt in retracted position or substantially within the lock casing when the door is open. Accordingly I provide a novel form of retractile catch. comprising a spring tongue secured at 36 at its inner end to one wall of the casing and carrying in its middle portion a lug 37 adapted under the force of the spring to snap in front of a tin or similar extension 38 at the upper edge of the shank when the bolt is drawnin to open the door. The outer or free end of the tongue 35 engages a stud 39 adapted to project through and beyond a keeper 10 on the striking side of the door. As shown best in Fig. et, this stud is made adjustable as to length, the same coi'nprising male and female members 39 and 39" threaded together and adapted to be adjusted relatively by the application of a screw driver or the like to the outer end of the stud so as to accommodate the device to different sizes or makes of doors or to irregularities of construction. Itwill thus be understood that when the bolt is drawn into the casing in the normal opening ofthe door, when it has been moved inwardly far enough to permit the door to open and the door starts to open, the spring tongue carries the lug 37 into position in front of the outer end of the fin 38 where the force of the spring holds it and thus the bolt is prevented from moving outwardly under the force of the spring 25. The bolt thus is held from projecting beyond the door and presents no obstruction tending to cause damage to the clothing or injury to the person. lVhen the door is closed sufiiciently, the stud S9 strikes against the striking member 20 and thus the stud 37 is thrown from the fin permitting the bolt to be projected as above described.

I claim 1. In a door lock, the combination with a casing, of a bolt having a head projectable from the casing and consisting of two relatively movable parts mounted on the same pivot, means tending to project the bolt head from the casing, means carried by said head pivot tending to lock the bolt from movement into the casing, and means carried by another part of the bolt to release the aforesaid locking means preliminary to the unlocking movement of said head.

2. In a door lock, the combination with a casing, of a bolt comprising a head and a shank movable longitudinally independently of each other to a limited distance, the head being projectable beyond the casing and consisting of a plurality of parts movable away from each other around a single pivot, means carried by the head and cooperating directly with the casing to lock the bolt head projected, and means carried by the shank serving to release said locking means during the interval. of independent longitudinal movement of the shank with respect to the head.

3. In a door lock, the combination of a casing, a bolt slidable therein and comprising a shank and a head, said head compris ing a pair of relatively movable parts pivoted on a common pivot, each head part comprising a hook at one end and a tail piece at the other end, said. hook and tail piece of each head part lying in a plane at one side of the pivot, and said shank extending into loose cooperation with the head between the tail pieces thereof.

at. The herein described door lock compris ing a casing, a slidable bolt projectable beyond the casing, the projecting end of the bolt consisting of a head includinga pair oi relatively movable parts, each part comprising a hmk at one end and a tail piece at the other. said bolt also including a shank having a pin extending at right angles to one end of the shank, said tail pieces having a pair of slots into which the opposite ends of the said shank pin project, and means carried by the bolt and tending to hold it projected beyond the casing.

5. In a door lock, the combination of a casin having a pair of inwardly projecting lugs on opposite sides thereof, a bolt projectable from the casing and including a head consisting of two parts pivoted on the same axis and having at'their outer ends a pair of oppositely projecting hooks, a pair of dogs pivoted upon the same pivot as the head parts and cooperating with said lugs to hold the bolt projected, and claw means cooperating with said dogs and connected to a part of the bolt movable independently of the head to release the dogs from the lugs preliminary to the retracting of the bolt head.

6. In a door lock, the combination of a casing, a bolt movable therein and projectable at one end therefrom, the projecting end of the bolt consisting of a plurality of relatively movable parts pivoted on the same pivot, the outer ends of the head parts hav ing oppositely projecting hooks and the inner ends of the same consisting of a pair of spaced tail pieces having longitudinal slots, another portion of the bolt comprising a shank havingone end projected be tween the tail pieces and carrying a pin extending into loose engagement with the tail pieces throughsaid slots, and a pair of leaf springs secured to the opposite sides of the shank and bearing upon the ends of the tail pieces tending to separate the tail pieces and cause the hook ends of the head to move toward each other, substantially as set forth.

HERMAN REIN. lVitnesses GEO. L. BEELER, GEORGE H. EMsLIn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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