US906289A

US906289A - Lock for sliding doors.

Info

Publication number: US906289A
Authority: US
Inventors: Alfred H Richards; Roscoe C Kittinger
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-04-29
Filing date: 1908-04-29
Publication date: 1908-12-08
Anticipated expiration: 1925-12-08

Description

A. H. RIGHARDSK: R. G. KITTINGER.

I LOOK r011 SLIDING noons. APPLICATION FILED APR. 29, 1908.

906,289. a v Patented Dec.8,190 8.

2 SHEETS-SHEET 1.

A. H. RICHARDS & 'R. O. KITTINGBR.

LOOK FOR SLIDING DOORS. APPL-IOATION FILED APR. 29, 190B.

Patented Dec. 8, 1908.

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ifizrzesses: a a. Um"

nnrrnn s'rn'i ns PATENT OFFICE.

ALFRED H. RICHARDS AND ROSGOE G. KITTINGER, OF BUFFALO, NEW YORK.

LOOK FOR SLIDING noons.

Specificationof Letters Patent.

Patented Dec. 8, 1908.

Application filed April 29, 1908. Serial No. 429,838.

To all whom it may concern:

Be it known that we, ALFRED H. Rronnnos and Rosoon C. KITTINGER, citizens of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Looks for Sliding Doors, of which the following is a specification.

This invention relates more particularly to improvements in permutation locks for use upon railway car doors and other sliding doors, although they are of course adaptable to various other uses.

One object of the invention is to provide a lock of this kind which will be exceedingly simple in construction and positive in operation and in which the various parts are so constructed and arranged that they cannot be broken or displaced by thejar of the car or by any force applied in endeavoring to break open the door, when locked.

Further objects of the invention are to so arrange the bolt which secures the door and connect it to the locking means therefor that the latter cannot be broken or injured by any force applied to the door or the bolt in an endeavor to open the door; and also to construct a lock which can be readily secured upon car doors of ordinary construction and which when so secured, will present no ac cessible openings on the outer side of the car, in which tools or explosives can be inserted for tampering with or destroying the look.

In the accompanying drawings: Figure 1 is a fragmentary side elevation of the outer side of a car and its door provided with a lock embodying the invention. Fig. 2 is a sectional plan thereof on line 22-, Fig. 1, showing the bolt in its locking position. Fig. 3 is a sectional elevation thereof on line 3-3, Fig. 2. Fig. 4 is an elevation, partly in section, of the lock viewed from the inside of the car. Fig. 5 is a sectional elevation of the same on line 55, Fig. 4. Fig. 6 is a sectional elevation thereof on line 66, Fig. 4. Fig. 7 is a sectional elevation on line 77, Fig. 4.

Like reference characters refer to like parts in the several figures.

A represents a portion of one of the side walls of a car, B the sliding door, and C the door post or jamb, all of which parts are of well known construction.

D represents a metal plate which is secured on the inner face of the side wall A of the car adjacent to the door post C and is provided at its forward end with a bearing block cl which is preferably formed integrally therewith and extends forwardly beyond the body portion of the plate into an opening or recess in the door post C. A second bearing block E projects outwardly from the plate D some distance in the rear of the block 01 and these two blocks form bearings for a locking bolt F which is journaled therein, the block E being provided with a longitudinal hole 6 through which the bolt F extends, while the block (Z has a semicircular groove or seat for the bolt F and a removal cap plate which holds the bolt in the seat. Suitable bolts (2? are employed for securing the block and its cover plate firmly in place in the door post 0.

The bolt F is provided with annular shoulders f which engage the opposite sides of the bearing block (Z and hold the bolt firmly against endwise movement while at the same time permitting free rotary movement thereof, and at its forward end in advance of the bearing block the bolt F terminates in an elongated T-shaped locking head f.

A keeper G is bolted or otherwise suitably secured on the inner face of the door B opposite to the bolt F and has at its forward end a lug 9 provided with an elongated slot or opening 9 to receive the bolt head. When the door is closed. the head of the bolt enters the slot g, andby turning the bolt a quarter revolution, the head interlocks with the keeper lug and locks the door.

Any suitable means may be employed for thus turning the bolt F to interlock its head with the keeper and for releasing it therefrom. In the construction shown, a push rod Hpasses through a guide hole in the lock plate D and is pivotally connected at its inner end by a link it with 2. lug h on the bolt F. This rod extends through the side wall of the car and is provided with a suitable knob h at its outer end, by operating which the bolt F can be turned into and out of its locking position. In the locked position of the bolt, the knob k preferably rests snugly against the outer face of the car wall and toturn the bolt for releasing the same, the knob is drawn outwardly to the extended position-shown in dotted lines in Fig. 5.

For locking the bolt F against rotary movement when its head f is in interlocking engagement with the keeper G, a looking bar I is provided which is mounted in a vertical opening 11 in the bearing block E and is capable of being raised and lowered therein. The vertical opening 2' intersects the longitudinal bolt opening e in the bearing block E at one side thereof, and the bolt F is provided with a groove or segmental opening 2" in one side thereof, so arranged that when the bolt is in its locking position this groove will register with the vertical opening 2' and permit the locking bar I to move freely up and down past the bolt. In this position of the bolt the locking bar, when raised, will engage in the groove 2" and holdthe bolt from turning. hen the locking bar has been lowered out of engagement with the groove i, the bolt is free to turn to its released or unlocked position.

The locking bar I is suitably secured at its lower end to an operating lever K. This lever is pivoted at one end to the lock plate D and at the other end beyond its point of connection with the locking bar I it is provided with a reduced end portion or tongue is which is adapted to be engaged by the tumblers Z of a permutation lock L for raising and lowering the same to move the locking bar I into and out of locking engagement with the bolt F.

The permutation lock L, Figs. 5-7, may be of any usual or suitable construction. As shown in the drawings, it consists of a series of tumblers Z mounted on a post Z of the V lock plate D and adapted to be operated in the usual manner by a shaft Z journaled in said post and extending to the front or outer side of the car where it is provided with a dial and operating knob Z of suitable construction. The tumblers are provided with segmental notches or pockets Z in their edges which, when the operating knob Z has been turned to move the tumblers in accordance with a predetermined combination, will register with one another and in this position the tongue 70 of the operating lever K engages in the notches. The operating knob Z of the lock L can then be further turned to raise and lower the operating lever K and thus move the locking bar I into and out of engagement with the bolt F.

When the tumblers are turned to withdraw the locking bar from engagement with the bolt, the operating lever K will be moved downwardly to the position shown in dotted lines in Fig. 4, in which position it engages a stop an on the lock plate D which limits its movement. In this position the tongue 0 remains in engagement with the pockets Z in the tumblers Z and cannot be withdrawn therefrom and further movement of the tumblers in this direction is pre vented. It is thus impossible to move the tumblers so as to lock the operating lever against movement when it is in its lowered position with its locking bar withdrawn from engagement with the bolt, and the ment of the lock will release the tongue is from engagement with the pockets Z* of the tumblers and the tongue will then ride upon the unbroken edges of the tumblers and be supported and held in its raised position thereby. If desired a casing can be secured on the lock-plate to inclose and protect the locking mechanism.

It will be seen from the foregoing description that all cndwise strain on the bolt F is borne by the shoulders f in engagement with the bearing block d and that no part of this strain is received by the locking bar I or the lever and permutation lock which operate the same. The 7 operating mechanism for locking the bolt will therefore not be ali'ected by any attempt which may be made to force the door or lock, and all displacement and injury of its parts is prevented.

The construction of the push rod H is such that if force is applied to this rod in attempting to turn the bolt when locked, without releasing thelocking bar from engagement therewith, this rod will give way before any injury will be done to the locking bar and its operating mechanism.

The lock can be readily applied to cars of ordinary construction and forms an effective means for preventing the cars from being broken into and their contents stolen. All of the principal parts of the lock are firmly mounted on the lock plate and it has no springs or delicate mechanism which can easily become broken and disarranged.

e claim as our invention:

1. The combination of a keeper, abolt provided with a head adapted to be interlocked with said keeper by turning the bolt, a bearing in which the bolt is held from endwise movement and is adapted to be turned, means for turning said bolt to move said head into and out of interlocking engagement with said keeper, a sliding locking bar which is slid into engagement with said bolt for holding the same against turning, and means for locking said bar in engagement with said bolt, substantially as set forth.

2. The combination of a keeper, aboltprovided with a head adapted to be interlocked with said keeper by turning the bolt, a bearing in which the bolt is held from endwise movement and is adapted to be turned, means for turning said bolt to move said head into and out of interlocking engagement with said keeper, a sliding locking bar which is slid into engagement with said bolt for holding the same against turning, and means for moving said bar into and out of engagement with said bolt and for locking the same in forth.

3. The combination of a keeper, abolt provided with a head adapted to be interlocked with said keeper by turning the bolt, a hearing in which the bolt is held from endwise movement and is adapted to be turned, means forturning said bolt to move said head into and out of interlocking engagement with said keeper, a locking bar which is movable transversely of said bolt into and out of engagement therewith, and means for locking said bar in engagement with said bolt for holding the same against turning, substantially as set forth.

a. The combination of a keeper, a bolt provided with a head adapted to be interlocked with said keeper by turning the bolt, means for turning said bolt to move said head into and out of interlocking engagement with said keeper, a bearing in which said bolt is adapted to turn, a locking bar which is movable transversely of said bolt in said bearing into and out of engagement With said bolt,

means for locking said bar in engagement with said bolt, and means for holding said bolt against endwise movement, substantially as set forth.

5. The combination of a keeper, a bolt provided with a head adapted to be interlocked with said keeper by turning the bolt, means for turning said bolt to move said head into and out of interlocking engagement with said keeper, a bearing having an opening in which said bolt is journaled and a transverse opening which intersects the same, a locking bar which is movable in said transverse opening into and out of engagement with said bolt, means for moving said bar, means for locking the same in engagement with said bolt, and means for holding said bolt against endwise movement, substantially as set forth.

6. The combination of a keeper, abolt provided with a head adapted to be interlocked with said keeper by turning the bolt, a bearing in which the bolt is held from endwise movement and adapted to turn, means for turning said bolt to move said head into and out of interlocking engagement with said keeper, a sliding locking bar which is slid into engagement with said bolt for holding the same against turning, and a permutation lock adapted to engage said bar and move the same into and out of engagement with said bolt and lock the same in engagement, therewith, substantially as set forth.

WVitness our hands in the presence of two subscribing witnesses.

ALFRED H. RICHARDS. ROSCOE O. KITTINGER. Vvitnesses C. B. HoRNBEoK, E. C. HARD.