US2482341A

US2482341A - Slide bolt lock

Info

Publication number: US2482341A
Authority: US
Inventors: Neil O Holmsten
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-06-18
Filing date: 1948-06-18
Publication date: 1949-09-20
Anticipated expiration: 1966-09-20

Description

Sept. 20, 1949.. n. o. HOLMSTEN SLIDE BbLT LOCK 2 Sheets-Sheet 1 Filed June 18, 1948 Jf lz Sept. 20, 1949. N; o. HOLMSTEN 2,482,341

SLIDE BOLT LOCK Filed June 18, 1948 2 Sheets-Sheet 2 Offs I 2 {D INVENTOR.

17 BY W4 Patented Sept. 20, 1949 UNITED STATES PATENT OFFICE SLIDE BOLT LOCK Neil 0. Holmsten, New Rochelle, N. Y.

Application June 18, 1948, Serial No. 33,782

3 Claims. (01. 292-148) V This invention relates to a slide bolt fastener for doors or the like and more particularly to a slide bolt having locking means to prevent its unauthorized operation.

An object of the invention is to provide a slide bolt with locking means so designed that it cannot be released by a burglar even after the glass in the door has been broken to afford access to the bolt.

Another object is to provide a slide bolt of the above type in which the locking means is designed with a screw guard which covers the attaching screws when the bolt is in locked position.

Various other objects and advantages will be apparent as the nature of the invention is more fully disclosed.

The invention will be better understood by referring to the following description, taken in connection with the accompanying drawings in which a specific embodiment thereof has been set forth for purposes of illustration.

In the drawings:

Fig. 1 is a side elevation of a slide bolt embodying the present invention in locked position;

Fig. 2 is a top plan view of the bolt showing a portion of the door and door frame in horizontal section;

Fig. 3 is a side elevation similar to Fig. 1 showing the bolt in retracted position;

Fig. 4 is a top plan view of the bolt in the position of Fig. 3;

Figs. 5 and 6 are sections taken on the lines 55 and 6-6 respectively of Fig. 1;

Fig. 7 is a detail view of the stationary member shown in side elevation;

Fig. 8 is a top plan view thereof;

Figs. 9 and 10 are sections taken on the lines 9-9 and |ll-I respectively of Fig. 7

Fig. 11 is a detail view of the sliding member shown in side elevation;

Fig. 12 is a top plan view thereof;

Fig. 13 is a rear elevation thereof; and

Figs. 14 and 15 are sections taken on the lines I4 I4 and I-I5 respectively of Fig. 11.

Referring first to Figs. 7 to 10, the stationary member is shown as formed from a blank of sheet metal and comprising a pair of attaching flanges IIJ having screw holes II for attachment to the door or the like and having a central substantially cylindrical barrel section I2 adapted to receive the slide bolt. The barrel section I2 is provided with a rectangular slot I3 through which the actuating handle of the bolt extends. A locksection I2 by suitable means, as by welding, and is provided with a hole l5 adapted to receive a padlock, or the like. The barrel I2 and flanges Ill are separated by walls I! to form channels in which the guard plate of the sliding member is adapted to slide. For a short distance from the rear end of the stationary member the Walls ll are cut away to form slots I6 for the purpose to be described.

Referring now to Figs. 11 to 15, the sliding member is shown as comprising a cylindrical bolt and a guard plate having side flanges 22 and having for the greater portion of its length a slot 23 extending beneath the bolt 20. The rear end 24 of the bolt 20 is attached to the guard plate by suitable means, as by welding, and projects forwardly over the slot 23, The flanges 22 are provided with holes 25 which, in certain positions of the flanges 22, are adapted to register with the screw holes II of the flanges II] of the stationary member to provide access thereto for inserting the screws.

The bolt 20 is also provided with a hole 26 in which an actuating handle 21 (Figs. 1 to 4) is secured.

Referring now to Figs. 1 to 6, the sliding member is first assembled in the stationary member by sliding the bolt 20 into the barrel I2 from the rear end thereof with the flanges 22 of the guard plate extending above and lying over the flanges ID of the stationary member and with the walls I! sliding in the slot 23. The solid portion of the guard plate beyond the slot 23 enters the slots I6 of the stationary member to permit the sliding member and stationary member to be completely telescoped. An actuating handle 21 is provided with a pin 3| (Fig. 4) which enters the hole 26 in the bolt 20 and is secured permanently thereto, as by welding. The handle 21 is provided with a hole 32 which aligns with the hole I5 in the ear I4 when the bolt is in latching position so that a padlock 35 may be passed through the aligned holes for securing the bolt.

The stationary member is secured to a door panel by shifting the bolt so that the holes 25 in the guard plate are brought into registration with the holes II in the flanges II] to permit screws 4| to be inserted therethrough. A keeper 42, which is similar in section to the stationary member and comprises a barrel 43 and outwardly extending flanges 44, is attached to the door frame 45 by means of screws 46 in alignment with the stationary member, so that when the bolt is advanced the bolt extends into the barrel 43 in the ing ear [4 is attached to the side of the barrel usual manner for securing the door.

It will be noted that the end of the guard plate extends over the flanges 44 of the keeper for covering the screws 46, as shown in Figs. 1 and 2. Hence the bolt cannot be withdrawn nor can the screws be removed except by first removing the padlock 35. When the padlock is removed the bolt may be retracted in the usual manner to the position indicated in Figs. 3 and 4. 1

It will be noted that the above described construction combines a screw guard with looking ears which is adapted to receive a padlock to prevent unauthorized opening of the bolted door.

This device is particularly adapted for use in conneotion with doors having glass panels which. might otherwise be opened by an intruder breaking the glass and reaching inside of'the door to release the bolt.

Although a specific embodiment has been shown, it is to be understood that the inventionis not to be restricted thereto, but that various changes and modifications may be made therein, as will be readily apparent to a person skilled in the art. 7 e

What is claimed is: l

1. A slide bolt fastener for doors or the like, comprising a stationary member having a central barrel adapted to receive abolt and outwardly extending flanges to be screwed against the inside of a door, a keeper of similar cross section to be screwed against the door frame, and a slidable member comprising a bolt slidable in said barrel and extendible into said keeper, and a guard plate attached to said bolt and'slidable. therewith to cover the attaching screws oi both the stationary member and the keeper, a locking ear carried by said stationary member and an. actuating handle carried by said bolt, said ear and handle having holes in registration when said'bolt is in locking position to receive a padlock tor securing the bolt against unauthorized actuation.

' '4 2. A slide bolt fastener for doors or the like, comprising a stationary member having a central barrel adapted to receive a bolt and outwardly extending flanges to be screwed against the inside of a door, a keeper of similar cross section to be screwed against the door frame, and a slidable member comprising a bolt slidable in said barrel and extendible into said keeper, a guard plate attached 7 to said bolt having flanges extending forwardly on opposite sides of said barrel to cover the attaching screws of both the stationary member and the keeper, a locking ear carried 'by said stationary member and an actuating handle carried by said bolt, said ear and handle having holes in registration when said bolt is in locking position. to receive a padlock for securing the bolt against unauthorized actuation.

'3. A slide bolt fastener for doors or the like, comprising a stationary member havinga central barrel adapted to receive a bolt and outwardly extending'fianges to be screwed against the inside of a door, a keeper of similar cross section to be screwed against the door frame, and a. slidable member comprising a bolt slidable in said barrel and extendible into said keeper, a guard'plate attached tosaid bolt having flanges extending forwardly onopposite sides oi said barrel to cover the attaching screws of both the stationary member and the keeper, said stationary member havinga slot toreceive said guard plate. to permit telescoping or the slidable and stationary members,

a locking ear carried by said stationary member and an actuating handle carried by said bolt, said ear and handle having holes in registration when saidrbolt' is in looking position to receive a padlock for securing the bolt against miauthorized actuation; 3 r I NHL 0. HOLMSTEN.

. No references cited.