US1361702A

US1361702A - Lock

Info

Publication number: US1361702A
Application number: US289788A
Authority: US
Inventors: Alexander S Falls
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-04-14
Filing date: 1919-04-14
Publication date: 1920-12-07
Anticipated expiration: 1937-12-07

Description

A. s. FALLS.

' LOCK.

APPLICATION FILED APR. 14, 1919.

' 1,361,702. Patented Dec. 7, 1920.

v 2 SHEETSSHEET I. 7 5 72/4 fi /fl (was.

A. S. FALLS. I

LOOK

APPLICATION FILED APR. 14. 1919.

1,361,702. Patented Dec. 7, 1920.

2 SHEETS-SHEE T 2- I I J wmumllll @fl w UNITED STATES PATENT OFFICE.

ALEXANDER S. FALLS, OF GLENGOE, ILLINOIS.

VLOCK.

Application filed April 14,

of the latch when the latch and keeper are in looking engagement,so as to prevent the latch from being raised or otherwise disengaged from the keeperby the use of unauthorized devices, such, for example, as by inserting a thin element, such as a knife blade, wire, or a piece of cord between the keeper and the edge of the door to which the lock is applied.

Another object of the invention is to provide a novel latch keeper which may be readily applied and used in connection with new looks or with old locks, now in use without requiring changes to be made in the lock casing or latch operating mechanism. In the preferred construction of my invention provision is -made for compensating for the worn condition of the latch when the keeper is used in connection with an old lock.

The invention consists in the noveliarrangements, constructions and combinations of parts for carrying out the above stated objects, and such other incidental objects as will appear from the following description.

The invention is illustrated in the accompanying drawings, wherein:

Figure 1 isa fragmentary view of a bank tellers cage, showing a locking device, con structed in accordance with my invention, applied thereto;

Fig. 2 is a plan view of the latch keeper shown in Fig. 1, the door and wall of the cage being shown in section;

Fig. 3 is a view similar to Fig. 1, taken from the inside of the cage;

Fig. 4 is a view, partly in section, of the lock and latch keeper shown in the pre- Spccification of Iletters Patent.

Patented Dec. 7, 1920.

1919. Serial No. 289,788.

ceding figures, the view being taken on line 4-4 of Fig. 5;

Fig. 5 is a sectional plan taken on line 5-5 of Fig. 4; and

Fig. 6 is a section of the latch and keeper taken on line 66 of Fig. 4.

Like characters of reference designate like parts in the several figures of the drawings.

In the drawings I have shown my invention in connection with a sliding door of the type usually employed for closing the door opening of a bank tellers cage. It will be obvious, however, that the invention is not limited in its application to this particular use or to the type of door illustrated.

In the drawings, 10 designates the side wall of a bank tellers cage which is formed with the usual door opening 11 having a metallic door j amb 12. The door opening is closed preferably, though not necessarily, by a sliding 'door 13 which, in accordance with the usual construction, operates on the outside of the cage. This door consists of a channel-shaped frame 14 which is covered with a closure strip 15 and supports the metallic mesh construction 16 of the door. The door carries a lock which, for the purpose of convenience, is illustrated in the drawings as being the most conventional type now used by manufacturers of bank teller cages. Thislock consists of a casing 17 having a latch 18 pivoted thereon, as indicated at 19. The free end of the latch is formed with the usual hook portion 20 which extends through a slot 21 in the lock casing. The latch is normally :held in looking position by means of a spring 22 which is supported on a stud 23, so as to bear on the upper edge of the latch. When it is desired to open the door from the inside of the I the usual form of latch keeper, by simply inserting a thin element, such as a wire, between the keeper and the edge of the door in a position whereby the latch may be raised or otherwise disengaged from its locking engagement with the keeper. Another customary practice or" unlocking these doors is by raising the forward edge until the hook portion of the latch is freed from its engagement with the keeper. These irregularities are overcome and rendered impossible by the present invention by providing a latch keeper structure which completely incloses the free end of the latch when the door is closed, so as to prevent the latch being raised by unauthorized elements, and also avoids the possibility of unlocking the door by raising the forward edge thereof. My improved latch keeper structure consists of a hollow boX-likeelement having an opening 28 in its side through which the hook portion 20 of the latch extends, the upper and lower edges of said openings providing catches 29, 30, for engaging the latch. The element 28 of the keeper is reversibly secured within a housing 31 by means of

screws

32, 32. WVhen the keeper is applied in connection with a new look, the element 28 is positioned in the housing 31 so that the edge 29 will provide the necessary catch forthe hook 20 of the latch. applied to an old lock in which the hook portion of the latch is somewhat worn, the element 28 is inverted from the position shown in Fig. 4, so that the edge 30.will provide the catch for the latch. \Vith this construction, it is possible to readily apply the keeper in the place of an old one, and maintain a close fit between the various elements. The housing 31 is provided with ears 33 which may be secured to the door jamb 12 by means of screws 34: or other suitable form of attaching elements. The upper and lowerv ends of the housing ele' ment 31 are cut away as indicated at 35, 36, so as to provide guideways 37 for the forward edge of the door, as indicated in Figs. 2 and 5. This construction prevents the door from being sprung outwardly from the walls of the cage when the door is closed. The vertical edges of the element 28 are rounded, as indicated at'38, to provide guides for directing the end of the latch into the interior of said element. In order to prevent any possibility of the latchbeing raised by the use of a wire, as above referred to, a hollow sealing element 39 surrounds the outer end of thelatch and has a telescopic relation with the element 28 when. the door is locked. The

inner surfaces

40, 41, of the side and end walls of this element are formed with a taper which serves asa guide for'the door when it is being closed, and minimizes the clearance between the walls of the

elements

28, 39, so as to prevent any possibility hen it is,

into the face of the door frame between the flanges of the'channel element 14:. The element 39 is secured to the door by means of screws 43, 4:4. 7

While I have shown and described my invention in one specific embodiment, it will be obvious that modifications in. structure might be made without departure from the spirit of my invention. i therefore do not wish to limit myself to the exact structure shown, except in. so far as expressly limited by certain of the appended claims.

I claim:

1. The-combination of a lock having a pivoted latch element, and a keeper adapted to be engaged by said latch comprising a housing, a catch element supported within said housing, and a seal element adapted to have a telescoping relation with said housing and catch element. 7 I

2. The combination of a lock having a pivoted late-h element, and a keeper adapted to be engaged by said latch comprising .a housing, a watch element secured within said housing in spaced relation to the side walls thereof, and a seal element provided with flanges which surround the outer end of Said latch and adapted to extend into the space between the walls of the housing and said catch element.

The combination of a lock having a pivoted latch element, and a keeper adapted to be engaged'by said latch comprising a housing, a catch elementformed with a pluraiity of catches and secured within said housing in spaced relation to the side walls thereof, and a seal element providedv with flanges which surround the outer endof said latch and adapted to extend into the space between the walls of the housing and said catch element. a

el. The combination of a lock having a pivoted latch element, and a keeper adapted to be engaged by said latch comprising a housing, a catch element formed with a plurality of catches and secured within said housing in spaced relation to the side walls thereof, and a seal element having tapered inner surfaceswhich provide guides having a telescopic relation with the walls of said catch element.

5. The combination of a lock having a pivoted latch and a latch keeper comprising a housing, a catch element provided with catches of different thickness and detachably secured within said housingso that its position may be readily reversed, and aseal element having a telescopic relation with the wallsoI" said catch andhousing member.

6. The combination with a door, of a lock for said door having a pivoted latch, a keeper device adapted to be engaged by said latch when the door is closed, comprising a housing having its ends recessed to provide guides for the edge of the door, and a combined guiding and seating element having flanges which have a telescopic relation with the walls of said housing.

7. The combination with a door, of a lock for said door having a pivoted latch, a keeper device adapted to be engaged by said latch when the door is closed comprising a housing having its ends recessed to provide guides for the edge of the door, a catch element reversibly supported within the housing in spaced relation to the side of the housing, and a seal element formed with flanges adapted to extend into the space between the walls of said catch and housing elements when the door is closed.

8. The combination with a slide door, of a lock on said door provided with a pivoted latch, a latch keeper supported in a fixed position with relation to said door comprising a housing and a catch member supported therein in spaced relation to the side walls,

and a sealing element carried by the door and provided with flanges which project into the space between said catch and housing members. 7

9. The combination with a slide door, of a lock on said door provided with a pivoted latch, a latch keeper supported in a fixed position with relation to said door comprising a housing and a catch member supported therein in spaced relation to the side walls, and a sealing element carried by the door and provided with flanges which project into the space between said catch and housing members, said element surrounding the outer end of said latch and having a flanged portion which is seated into the Vertical edge of the door.

10. The combination of a lock having a pivoted latch, and a latch keeper comprising a reversible housing, a catch element provided with catches of diflerent thickness and detachably secured within said housing so that its position may be readily reversed, and a seal element having a telescopic relation with the walls of said catch and housing member.

ALEXANDER S. FALLS.