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Publication numberUS1943826 A
Publication typeGrant
Publication dateJan 16, 1934
Filing dateDec 24, 1930
Priority dateMar 12, 1925
Publication numberUS 1943826 A, US 1943826A, US-A-1943826, US1943826 A, US1943826A
InventorsJohn Holtzman
Original AssigneeJohn Holtzman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lock
US 1943826 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Original Filed March 12, 1925 Mull ig Z9 I X0 INVENTOR Patented Jan. 16, 1934 UNITED STATES PATENT GFFEGE LOCK John Holtzman, New York, N. Y.

6 Claims.

My invention relates to locks of a type suitable for use upon swinging doors and my purpose being to enable the door to be locked and unlocked in the usualacceptation of these terms, additional means being provided for fastening the door to the floor and thus preventing the door from being opened, in the event that the lock mechanism is disabled or destroyed, or for any reason is ineifectual in holding the door in a predetermined fixed position.

More particularly stated I provide a fastening mechanism auxiliary to the door look but connected therewith and normally controllable thereby, for the purpose of fastening and releasing the door under control of the lock, and yet adapted to fasten the door in a predetermined fixed position somewhat independently of the look, so that the door will remain fastened in that position if the lock becomes disabled or is otherwise rendered useless, as for instance if broken or mutilated by the efforts of a burglar.

This application is a division of my pending application Serial No. 14,980, filed March 12, 1925.

Reference is made to the accompanying drawing forming a part of this specification, and in which like reference characters indicate like parts throughout all of the figures.

Figure 1 is a front view, partly an elevation and partly a section, showing my improved mechanism as applied to an ordinary door.

Figure 2 is a section on the line 2-2 of Figure 1, looking in the direction indicated by the arrows.

Figure 3 is a fragmentary front elevation of the mechanism shown in Figure 2.

Figure 4 is a fragmentary sectional view of the lock, showing the means for operating the fastener.

Figure 5 is a section showing a turnbuckle used as a means for adjusting the connection between the lock and the fastener.

A door is shown at 58 and is mounted to swing relatively to a jamb 59.

My lock appears at 60, and is mounted upon and carried by the door. Associated with the lock 60 is a keeper 61, fixed upon the door jamb.

The lock is adapted to be actuated by both a knob and a key, and is provided with a stem 62, extending through the lock casing and mounted to rock back and forth.

Fixed upon the stem 62, and thus located inside of the lock casing, is a lever 63 carrying a pin 64 set in its free end, this lever and pin, as shown in Figure 4, being adapted to rock angularly from a substantially horizontal position, as indicated in Figure 4 by full lines, into an oblique position as indicated in said figure by broken lines.

Journaled to the pin 64 is a link 65, extending downwardly through an opening 66 in the 1 lower wall of the casing 60, and thus projecting slightly below the same. The lower end of this link is connected with a flexible member 67, preferably a wire cable, rope or string, this flexible member extending downwardly to a turn- 1 The flexible member 67 is connected with and supporting a guide '70. The bracket carries d a guide 70, and is provided with a ledge '73, disposed near the bottom edge of the door.

A pulley '74 is journaled upon the bracket 72, and engages the flexible member 59, this pulley co-operating with the guide '70, as indicated in Figure 2.

The bracket '72 carries a pin 7'7, and journaled upon the same is a shoe '76.

The shoe '76 is provided upon its under face with an undercut recess '79, in which is secured a pad 80, of rubber, or if preferred, an abradant material. A spring encircling the pin 77 engages the shoe '76 and the flange 73 respectively, the tendency of this spring being to press the shoe 76 downwardly, and thus to force the pad 79 downwardly against the floor. Thus the shoe 76 acts like a cam, and when against the floor can prevent the door from being opened, even if the lock be totally disabled.

With the various movable parts occupying the respective positions indicated for them in Fig ures l and 2, it is obvious that the lock 60 may be actuated after the manner of any other door lock, for the purpose of preventing the door 58 from being opened. If, however, the lock is so actuated as to release the door, the fastening consisting of the shoe Z6 and parts immediately associated therewith is normally actuated at the same time. The result is, that the shoe '76 is rocked upwardly upon the pin 77 whenever the lock 60 is properly actuated to permit the door to be opened.

Suppose, now, that the lock 60 is broken or disabled, say by work of a burglar. In such event the shoe '76 presses its pad against the floor, and thus acts as a cam, which prevents the door from being opened.

Whenever it is desired to release the shoe '76 and also unlock the door, the ordinary turning of the key in the lock accomplishes both purposes simultaneously and at a single step.

Should it be required to maintain the shoe 76 in a raised position, a screw 81 in one of the sides of the bracket 72, may be placed in an opening 82 in the side of the shoe, for the purpose of enabling the shoe to be supported.

If desired, the shoe may be reversed or brought into the position indicated by broken lines in Figure 2. This done, the shoe operates to prevent the door from being closed.

I do not limit myself to the precise mechanism and described, as variations may be made therein without departing from my invention, the scope of which is commensurate with my claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1. The combination, with a key actuated lock, of a spring-impelled arcuate shoe pivotally supported on its top end to make frictional contact with a floor, means operated by said lock to raise the shoe, and said shoe being supported with a removable pintle pin permitting reversal of said shoe to retain the door in an open position.

2. The combination of a door lock having a rocking member which is caused to rock when said door is locked or unlocked, a bracket fixed upon the door adjacent its lower edge, a shoe pivoted on said bracket and having a curved surface adapted to grip the floor surface over which the door swings, said curved shoe surface being disposed eccentric to the axis on which said shoe pivots so that the frictional pressure of said shoe against the floor surface will be increased by pressure acting against the door, and a flexible adjustable element for connecting said rocking member with said shoe and key operated means operable from outside the door for controlling the movement of said shoe, said latter means permitting said shoe to lock upon the surface of the floor in any position of radial movement of the door, and rolling means connected with the door for directing the major portion of said flexible element to lie close to the door.

3. The combination of a door lock having a rocking member which is caused to rock when said door is locked or unlocked, a bracket fixed upon the door adjacent its lower edge, a shoe pivoted on said bracket and having a curved surface adapted to grip the floor surface over which ihe door swings, said curved shoe surface being disposed eccentric to the axis on which said shoe pivots, so that the frictional pressure of said shoe against the floor will be increased by pressure acting against the door, spring means tending to move said shoe into engagement with the floor surface, and flexible and adjustable means for connecting said rocking member with said shoe, and key operated means operable from outside the door for controlling the movement of said shoe, said latter means permitting said shoe to lock upon the surface of the floor in any position of radial movement of the door,

and rolling means connected with the door for directing the major portion of said flexible element to lie close to the door.

4. The combination of a door lock having a rocking member which is caused to rock when door is locked or unlocked, a bracket fixed upon the door adjacent its lower edge, a shoe pivoted on said bracket and having a curved surface formed of compressible material, adapted to grip the floor surface over which the door swings, said curved shoe surface being disposed concentric to the axis on which said shoe pivots, so that the frictional pressure of said shoe against the floor surface will be increased by pressure acting against the door, and flexible and adjustable means for connecting said rocking member with said shoe, and key operated means operable from outside the door for controlling the movement of said shoe, said latter means permitting said shoe to lock upon the surface of the floor in any position of radial movement of the door, and rolling means connected with the door for directing the major portion of said flexible element to lie close to the door.

5. The combination of a door lock having a rocking member to be caused to rock upon the operation of the lock, a bracket secured upon the door adjacent its lower edge thereof, a shoe pivotally mounted on said bracket, a piece of yieldable material inserted in the lower part of said shoe to grip the floor surface over which the door swings, said shoe being constructed whereby the swinging movement of the door toward the open position tends to force said shoe against the surface of the floor and thereby tends to increase the pressure of said shoe against the floor, and adjustable and flexible means connect ing said rocking member and the said shoe and key operated means operable from outside the door for controlling the movement of said shoe, said latter means permitting said shoe to lock upon the surface of the floor in any position of radial movement of the door, and rolling means connected with the door for directing the major portion of said flexible element to lie close to the door.

6. The combination of a door adapted to be swung toward open position, a bracket secured upon the door adjacent its lower edge thereof, a shoe pivotally mounted in said bracket and having side walls, a piece of yieldable material inserted in the lower part of said shoe to grip the floor surface over which the door swings, said shoe being constructed and. arranged whereby the swinging movement of the door on its hinge, toward the open position thereof, tends to force said yieldable material against the floor surface and whereby the pressure of said shoe against the fioor is increased upon the attempt to swing the same toward the open position thereof, and flexible and adjustable means to move said shoe into inoperative position and key operated means operable from outside the door for controlling the movement of said shoe, said latter means permitting said shoe to look upon the surface of the floor in any position of radial movement of the door, and rolling means connected with the door for directing the major portion of said flexible element to lie close to the door.

JOHN HOLTZMAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4136899 *Jun 14, 1978Jan 30, 1979Frasher Gary JDoor brace
US5741033 *Aug 29, 1996Apr 21, 1998Everett; James D.Security operating device
Classifications
U.S. Classification70/94, 292/242, 292/338
International ClassificationE05C19/00
Cooperative ClassificationE05C19/004
European ClassificationE05C19/00C2