US1058346A - Emergency door-lock. - Google Patents

Description

J. B. BERSTLER.

EMERGENCY DOOR LOCK.

APPLICATION FILED IBILG. 1912. RENEWED SEPT. 7. 1912.

1,058,346. Patented Apr. 8, 1913.

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703/111, ,5. B5 5 7155 fluvwtoz l/Witnesses J. B. BERSTLER.

EMERGENCY DOOR LOCK.

RENEWED SEPT. 7, 1912.

APPLICATION TILED FEB-.6, 1912. 1,058,346.

Patented Apr. 8, 1913.

2 SHEETS-SHEET 2.

5 M van tor l ED STATES PATENT OFFICE.

JOSHUA B. IBERSTLEB, OF LANCASTER PENNSYLVANIA, 'ASSIGNOR, BY MESNE ASSIGNMENTS, T0 SAFETY MANUFACTURING COMPANY, OF LANCASTER, PENNSYLVANIA, A CORPORATION OF DELAWARE.

EMERGENCY DOOR-LOCK. v

Patented Apr. 8, 1913.

Application filed February 6, 1912, Serial No. 675,700. Renewed September 7, 1912. Serial No. 719,163.

To all whom it may concern:

Be it known that I, JOSHUA B. BERSTLER, citizen of the United States, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certain new and vuseful Improvements in Emergency Door-Locks, of which the following is aspecification.

This invent-ion relates to improvements in emergency door locks and the object is to provide a device of this class in which the lock may be operated by pressure from the inside and by turning the lock knob from the outside.

The principal object in the present instance is to produce a device of this character that will be as simple as possible, and yet prove efiective in action.

The invent-ion consists of a front plate, with a knob so placed therein that it will be free to move toward and away from the door, by pressure being applied directly to it, and a pair of levers so placed within the plate that the inner edge of the knob will operate them to withdraw the upper and lower door locking bolts simultaneously.

A further object is to provide a simple meansfor operating both of the locking bolts from the outside by merely turning the outside knob.

The invention is more fully described in the following specification and clearly illustrated in, the accompanying drawings in which Figure 1 is an elevation of a pair of doors with my lock applied thereto, showing the inside of the doors. Fig. 2 is a central, vertical sectional view of the device as applied to the door. Fig. 3 is a detail view showing the outside knob operating means foroperating the bolts. Fig. 4 is a detail of the bolt. Fig. 5 is a detail of the bolt engaging end of the operating rod. Fig. 6 is a detail of the bolt guide and Fig. 7 is a detail of the lever supporting plate.

The numeral 1 designates the door, 2 the inner plate and 3 the inner knob. The plate 2 is formed with an inwardly curved hollow portion 4, the inner extremity of which is formed with a cylindrical neck 5 and this neck is formed with a horizontal guide slot 6..

The knob 3 fits loosely in this neck, and

its shank 7 is provided with a to ride in the,slot 6.

In the'curved hollow portion of the plate I secure a lever supporting plate 9, formed with a pair of side ears 10 and in these ears I place a pair of oppositely movable levers 11, the inner or free ends of which are in line with the inner end of the knob shank, and to the opposite ends of these levers I secure the innerends of a pair of bolt operating rods 12. Each of these rods is formed at its' other end with a hook 13 adapted to engage an opening 14 in one of pin 8 adapted 'the locking bolts 15, one of which bolts is plates serve to keep the bolts in proper position. These plates are formed with elongated slots in the front face, 18," and a pin 19 which screws into the bolt moves in this slot and serves to keep the bolt in proper position, and together with two lugs 20 formed on the plate serves as a means for keeping the bolt in alinement. The bolts are backed by coiled springs 21, which serve to keep them normally shot and against the tension of which the bolt operating rods 12 and the levers 11 operate. It is evident therefore that when pressure is the levers are opened an the operating rods 12 are drawn inwardly, toward the knob center, thus withdrawing the bolts 15 and permitting the door to be opened.

The means for opening the door from theoutside consist of a knob 22, on the inner end of the shank 23 of whichI place a disk 24 and on this disk ll place two headed pins 25 near the outer edge, diametrically opposite each other. On the inner ends of the operating rods 12, I attach plates 26, each of which is formed with an elongated slot 27 and in these slots I arrange a pair of headed rods 28, adapted to move therein, and whose inner ends are pivotally secured to the headed pins on the disk. It will be seen. therefore, that when the knob 22 is turned, the rods 28 willdraw the operating rods 12 toward the lock center and retract the locking bolts.

The. slots 27 in the plates 25 will permit the plates to move when the inner knob is ut on the knob 3,

operated without turning or afl'ecting the outer knob, just as the outer knob when turned Will not affect the inner knob, for the reason that the inner ends of the levers ll are normally free from contact with the inner edge of the inner knob shank.

Having thus fully described my invention What I claim and desire to secure Letters Patent is 1. In an emergency door lock the combination of an inner plate provided with a central neck, a guide slot in said neck, a hollow inner knob provided with a pin adapted to move in said neck, a "lever supporting platesecured within the plate, a pair of levers pivotally arranged on said plate and adapted to be operated b the said knob, a

air of bolt operating r0 s connected to the inner ends of the levers, hooks on the outer ends of said rods, bolts formed with openings ada ted to receive said hooks, SPI'IHOS forkee mg the bolts normally shot, gui e plates or the bolts, pins on the bolts pro- ]ecting through slots in the guide plates, plates provided with slots secured to the inner ends of the operating rods, headed rods adapted to move in said slots, an outer knob, a disk on" the inner end of said knob and pins' on the disk in pivotal engagement with the irmer ends of said headed rods.

2. In an emergency door lock the combination of a plate formed with a central opening, a knob movably secured in said opening, a pair of levers secured within the plate and in line with the shank of said knob, operating rods connected to said levers, locking bolts on the outer ends of said operating rods, springs to keep the bolts normally shot guide plates for the bolts, an outer knob, a disk secured to the knob, and rods connecting the disk with the operating rods.

3. In an emergency door lock the combination of an inner knob, a plate formed with an opening to receive the shank of the knob, a pair of bolt operating levers pivoted within the" plate, the free ends of which are adapted to be actuated by the knob shank, bolt operating rods connected to the inner ends of the levers, spring backed bolts on the outer ends of the operating rods, guide plates for the bolts, an outer knob, a disk on the shank of the outer knob and rods connecting the disk with the bolt operating rods.

In testimony whereof I afiix my signature in presence of two witnesses.

JOSHUA B. BERSTLER.

Witnesses:

En. A. KELLY, CLARA E. YoUNe.

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