US586757A - david o - Google Patents

Description

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No. 586,757. Patent (1 July 20,1

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UNITEn STATES DAVID O. BOOTH AND CLAUDE E. DAVISSON, OF MOUNT CLARE PATENT OFFICE.

VEST VIRGINIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 586,757, dated July 20, 1897.

Application filed March 3, 1897. Serial No. 625,841. (No model.)

To (all 1070mm it may concern:

Be it known that we, DAVID O. BOOTH and CLAUDE E. DAVISSON, citizens of the United States, residingat Mount Clare, in the county of Harrison, State of lVest Virginia, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a lock or door-securing device which comprises a bar or bars extending completely across the door and removably secured in housings fastened to the door-casing or wall on either side of the door.

Among the principal objects of the invention is to provide a securing device for a door which operates upon the principle of the well-known bar which is often employed and which extends completely across the dooropening when the door is closed and serves to secure it from being opened by unauthorized persons. Experience has shown that a bar completely crossing a door is a greater safeguard against burglary than locks or other door-securing devices.

Other objects and advantages of the invention will be set forth in the following description, and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a perspective of a door provided with a securing device constructed in accordance with our invention. Fig. 2 is a rear plan of the lock portion proper of the device. Fig. 3 is a detail in perspective of a combined springlatch and tumbler employed with the latter. Fig. & is a modification.

Like letters refer to like parts in all figures of the drawings.

A represents the case or body portion of the lock, which may be struck up in sheet metal or formed of separate parts, constituting a frame a and a facing, and, if desired, a backing-plate a, the whole secured together and to the door by screws or bolts passing through perforations a B represents a portion of the door-securing bar which constitutes the bolt of the lock. B represents the remaining portion of said bar and has one end thereof secured to the lock-case in any suitable manner or,as shown, by screws 1). The outer end 11 of the section B of the bar is chamfered or rounded 01f, so as to readily enter the housing C at the hinge side of the door. A housing C is secured to the wall or casing at the opposite side of the door to receive the outer end of the section L of the bar or bolt of the lock. Openings a are formed in the lock-case for the passage therethrough of the bar-section.

The bar-section B is notched, as at B and B for the reception and operation of the blade E of the key E, which is introduced into the case through the keyhole E If desired, a keyhole may be formed through the door itself, so that the movable section of the bar may be operated bymeans of a key from the outside, but in cases of greater security there is to be no keyhole accessible from the outside. The blade E of the key E is provided with a step E, which is designed to lift the tumbler-ward F during the rotation of the key, and as the said tumbler-ward is secured to or formed asa part of the spring-latch and tumbler G the lifting of said tumbler-ward lifts the latch G from its normal position, while a further rotation of the key and its blade, the latter taking into the notch B of the barsection, reciprocates said bar-section to lock and unlock or to insert or remove said bar-section from the housing C. The springlatch also constitutes a spring-tumbler in which the horizontal portion forms a fence and the depending portion F a tumbler-ward to lie in the recess of the bar portion. WVhen the door is locked, the latch G takes a holding contact against the inner end of the movable section B of the bar, thus preventing an unlocking reciprocation thereof Without a key adapted to operate the tumbler-Ward. So, also, the latch G, when the bar is unlocked, rests in a latch-seat B to retain the bar in an unlocked position, from which it might be thrown bycentrifugal force when opening or closing the door or otherwise accidentally. The spring is secured to the vertical Wall of the casing by screws or rivets G and is bent at right angles to bring it parallel with the movable bar-section, while the tumbler-ward is arranged at a right angle to the spring and is thus brought into proper relation to the keyhole to be operated upon by the key. The bar-section B is also recessed, as at B to provide a space for the tumbler-ward F within the thickness of the bar, and thus reducing the necessary thickness of the lock -case. The end walls of the recessB will limit the movement of the bar as the walls will engage the depending tumbler-ward F at the extreme points of movement in either direction. This prevents the bolt being thrown, so that the latch-seat B will pass beyond the latch-point of the tumbler. By the engagement of the end walls with the tumbler the bar B will be stopped in its movement, so that the latchseat and latch will be in proper position to engage each other. By reference to Fig. 4 it will be seen that both bar-sections may be reciprocated into their housings by simply duplicating the key, tumbler-ward, and latchnotches of the bar and blade of the key and also arranging the section B below the keyhole instead of locating the section B in line with the section B of the bar, all as shown in Fig. 4.

It is clearly understood that by rotating the key from left to right, as shown in Fig. 2, the bar-section B is reciprocated to the right to unlock the same, the key-notches in the unlocked position assuming the position indicated by dotted lines in Fig. 2, so that upon the rotation in the opposite direction of the key the bar-section is thrown to the left or into its locked position. In the modification the duplication of the parts is such that while the blades of the key are rotating in one direction they reciprocate an adjacent bar-section outwardly to lock the same, and when rotated in the opposite direction the bars are reciprocated to unlock the same, the duplicate tumblers and spring-latches serving the same functions as where but one of the barsctions is reciprocated. In this modification it is not necessary to bevel the outer end of either bar-section, and in accurate work such necessity does not positively exist where one of the bar-sections is fixed to the case.

By our invention we are enabled at a minimum expense to provide a most serviceable and reliable securing device, and Where it is adapted for use inside only it serves an extremely safe device for closing the doors of stores, factories, and other establishments, especially such doors as are not ordinarily used for common entrance and exit.

What we claim is 1. Adoor-securing device comprising a casing, a bar secured to said casing, a bar-section mounted to reciprocate in said casing and provided with key-receiving bar-operating notches, and housings secured at opposite sides of the door on the casing or wall to receive the ends of said bars, substantially as specified. Y

2. A door-securin g device comprising a bar extending across the door and formed in sections one of which is secured to a case and the other terminating within a case secured to the door, one of said sections being provided with key-receiving and bar-operating notches, a spring-latch within the casing for maintaining the bar in a desired position and a tumbler upon the latch and extending into the'path of the blade of the key, substantially as specified.

3. In a door-securing device, the combination of a case, a spring-tumbler secured to the case and provided with a tumbler-ward depending therefrom, a bar provided with a recess having opposite walls between which said ward extends and which limit the movement of the bar, bar-operating notches, and a tumbler-seat upon the bar, substantially as specified.

DAVID O. BOOTH. CLAUDE E. DAVISSON.

Witnesses:

I. H. LAWsoN, D. K. REED.

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