US876167A - Mortise-lock. - Google Patents

Description

A TTOHNE YS w, W wp. M au m m f1 w/TNESSES LOUIS S. S. GEORGE, OF KAMLOOPS, BRITISH COLUMBIA, CANADA.

MORTISE-LOCK.

Specification of Letters Patent.

Patented Jan. '7, 1908.

Application filed .Tune 29. 1907. Serial No. 381.451.

To all whom t may concern: y

Be it known that I, Louis S. S. GEORGE, a subject of the King of Great Britain, and a resident of Kamloops, in the Province of British Columbia and Dominion of Canada, have invented a new and useful Improvement in Mortise-Locks, of which the following is a full, clear, and exact description.

The purpose of the invention is to provide a mortise-lock in which the working parts are few, simple and compact, and wherein a latch and a bolt operate independently of each other, the latch being operated by a knob and pindle and the bolt by means of a suitable Another purpose of the invention is to provide a cylindrical tapering casing so that the only cutting tool required for the insertion of the lock is a proper sized auger or other bit, and so that by :reason of the tapering form of the casing it is easily inserted in or withdrawn from the opening prepared lfor it, the taper of the casing also serving to counteract any small error in the alinement of said opening.

The invention consists in the novel construction and combination of the several parts as will be hereinafter fully set forth and pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar' characters of reference indicate corresponding parts in all the figures.

Figure 1 is a longitudinal section through the lock and a section through that portion of a door in which the lock is fitted, the latch being in its outer, and the bolt in its inner position; Fig. 2 is a view similar to Fig. 1, the bolt and latch, however, being both shown in their outer position g and Fig. 3 is a transverse section taken practically on the line 3 3 of Fig. 2.

A represents that portion of a door in which the lock casing A is introduced. The lock casing A is circular in cross section and is eXteriorly tapering so that it may readily enter the opening prepared for it, and will likewise remedy slight defects in the false alinement of said opening. A face plate 1() is provided for the casing A and this face plate 10 has usually a slip connection with the outer end of the casing A, as is illustrated, but it may be otherwise connected to said casing, and the face plate is also provided with an opening 11 therein, of such dimen* sions that both the latch B and the bolt C of the lock may pass outward through said opening and inward to a position within the casing. The shoe 12 of the latch B extends rearwardly within the casing for a predetermined distance and has engagement with the upper wall of the said casing, and at the inner end of the said shoe 12 of the latch a block extension 13 is formed, having a segmental recess 14 produced in itsinner or front face, and at the outer or rear face ofthe said block extension 13 a stud or projection 15 is provided, surrounded by the contracted end of preferably a coil spring 16,whieh spring has bearing against the end wall of the said casing A', as is shown both in Figs. 1 and 2, and when the latch B is drawn inward the spring 1G is placed under tension and when the said latch is relieved from pressure by its operating factor, the spring 16 instantly acts to carry the head of the latch B out to locking position with a suitable keeper or in position to engage with such keeper.

A bore 17 is made transversely in the door and at right angles to the casing A', the said bore being opposite the recess 14 in the block extension 13 of the latch when the latch is in its outer position. Face plates 1S are made to surround the bore 17 at its ends, the said plates being suitably attached to the outer face of the door, as is shown in Fig. 3, and spindle sleeves 19 are passed through the end portions of the bore 17 into the easing A through openings 20 in the sides of said casing, and the outer faces of the casing where the openings 2O are made, are 'flattened in order to receive the inner flat faces of segmental flanges 21 formed at the ends of the said spindle sleeves, the conveXed surfaces of which flanges form eontinuations of the convexed surfaces of the said easing A where said openings 20 are produced. rlhe spindle sleeves 19 meet at the transverse center of the casing and pass through the recess 14 in the block extension 13 of the latch shoe B, as is illustrated in Figs. 1 and 2. A segmental cam 2 is formed centrally upon the inner or forward faces of the spindle sleeves 19, a portion of the said cam being formed on each spindle sleeve, and the two sections are brought together when the spindles are in their normal position, shown in Fig. 3. 'lhe interior of the spindle sleeves 1.() is arranged substantially to receive the usual spindle provided with the customary knobs, which latter' two features have been omitted from the drawings.

When the casing A is not made of cast iron but of sheet iron or other ilexible material, the spindle sleeves 1Q may be manufactured in one piece, and sprung into position when the lock is being assembled, through the front or open end of the casing'.

The end faces of the cam 22 bear about equally against the upper and lower forward edges of the recess 14 in the enlargement of the latch shoe B, and in order that the said cam may have freedom of movement at its upper extremity, an opening 23 is made in the shoe of the latch to receive said member, thus it n illV be observed that by turi'iing the latch spindles, either of the knob spindles passed through the cam 22 will be rocked either upward or downward, and whether turned in one direction or the other will draw the head of the latch within the casing, placing the spring 16 under tension. As soon as the knob is released, the spring acts to normally restore the latch to its outer or normal position.

At a point below the shoe of the latch B, a keyhole 24 is produced in a side of the casing, in fact the keyhole may extend entirely through both sides of the casing and through corresponding' sides of the door. This keyhole is adapted to receive a key D of suitable type. The shoe 25 of the bolt C is beneath the shoe of the latch, as is the bolt C immediately below the latch B, but the shoe 25 of the bolt C extends but a short distance to the rear, and is provided with an extension or extensions 26 from its under face, that engage with the bottom wall of the casing A/ to guide the bolt shoe at that point, and the said bolt shoe is provided at the rear portion of its upper face with a guide bar 27, that has sliding engagement with the under face of the shoe of the latch B, as is clearly shown in Figs. 1 and 2. The shoe 25 of the bolt C is providedwith a longitudinal slot 23, and in this slot a release lever 29 is located, being fulcrumed at its forward end, and in the upper face of each member of the said shoe formed by the aforesaid slot 23 a recess 30 is produced somewhat V-shaped or Haring at the top, and the said recesses which are in transverse alinement, are over the lower members 26 of the said shoe, and the recesses 30 are adapted to receive the bit of the key D when the said key is turned, and according to the direction in which the key is turned the bolt C is moved outward or inward.

It is desirable to lock temporarily the bolt C in both its outer and its inner position, therefore slots are produced in the lower edges of the members of the shoe 25, the slots being in transversely alining pairs, namely, a forward pair 31, and a rear pair 32, and

either pair of slots, according to the position of the bolt C, receives the upper bow section of a substantially U-shaped spring 33 that is secured at its free ends to the bottom portion of the casing A', adjacent the front or beneath the head of the bolt C when in its inner position, and the release lever 29 normally rests upon the said spring locking device 32 as is illustratedin Figs. 1 and 2. When the bolt is in its inner position the locking device therefor engages the forward recesses or notches 31, and when the bolt is in its outer position, the rear recesses or notches 32 are engaged by the spring lock. Whenever the key D is turned to enter the recesses 30 in the shoe of the bolt C of the device, to throw the same, the bit of the key also presses down the releasing lever 29, causing it to press down on the spring lock 32 and disengage it from the shoe of the bolt, leaving the bolt free to be shot inward or outward, as desired, the spring lock automatically returning to its engagement with said shoe 25 when the shoe is released from the key.

The lever 29 is kept from falling out of place when the lock is inverted, by a pin or projection 36, passed through the shoe of the bolt C, as is shown in Figs. 1 and 2.

A recess 34 is usually provided in the bottom wall of the casing A, to permit ample dmvnward movement of the spring lock 33, and usually segmental openings 35, shown in dotted lines in Fig. 1, are provided to permit the ready entrance of sections of the cam 22, but other means may be provided for receiving the said cam.

Having thus described my invention, I claim as new and desire to secure by Letters Patent,-

1. In a lock, a casing, a spindle-operated latch mounted to slide in the casing, a sliding bolt within the casing, independent of the latch, a key, means for operating the bolt by said key, a locking device for the bolt, and a releasing device for said locking device, 0perated by the said key.

2. In a lock, a cylindrical casing, a springcontrolled spindle-operated latch mounted for movement in the casing, a bolt having independent sliding movement in the casing adjacent the said latch, having a recess therein, and a longitudinal slot and a lever pivoted in the said slot, a key arranged to enter the said slot and engaging with the said lever, and a spring locking device carried by the casing and adapted for engagement with the said bolt, which spring locking device is carried into or out of engagement with the said bolt by the action of the said lever controlled by the movement of the said key.

3. In a lock, the combination with a casing, a bolt mounted to slide in the said casing, the said bolt being provided with a shoe, and an enlargement at the end of the said shoe also mounted for sliding movement in the casing, a spring bearing against said enlargement and an end of the casing, the said enlargement being provided with a recess in its inner forward face, a spindle sleeve passed through the said recess in the said enlargement, being journaled in the said casing, and a cam carried by the said spindle sleeve for engagement with the opposite edges of the recess in said enlargement.

4. In a lock, the combination with a casing, of a bolt mounted to slide in the casing, a shoe for the said bolt provided with a longitudinal slot therein and recesses in its upper face, guides for the upper and lower portions of t e said shoe, a release lever pivoted in the s otted portion of the shoe, a spring locking device secured t0 the said casing, being normally in engagement with the said shoe and in engagement with the said release lever, and a key adapted to actuate the bolt by entering the recesses therein and to operate the said spring lock by operation to and from the release lever.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS S. S. GEORGE.

Vitnesses:

HENRY T. WILSON, FRANK N. HIRsT.

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