US1892447A

US1892447A - Lock mechanism

Info

Publication number: US1892447A
Application number: US448907A
Authority: US
Inventors: John E Carr; Knell John
Original assignee: ALL STEEL EQUIP Co
Current assignee: ALL STEEL EQUIP Co; ALL-STEEL-EQUIP Co
Priority date: 1930-05-01
Filing date: 1930-05-01
Publication date: 1932-12-27
Anticipated expiration: 1949-12-27

Description

IWIIH w 66 2 .5 0 m m 5 3 h 5 M Z w m 1L 1* w m; a V MMNMMMMUNV\MN\M\\\\\\\\N5 H I m 1932- J. E. CARR ET AL LOCK MECHANISM Filed May 1, 1930 2 sheets sheet 1 Dec. 27, 1932. J. E- CARR ET AL LOCK MECHANISM Filed May 1, 1930 2 Sheets-Sheet 2 fa/221.1 7. 801 7 -JofinJOzeAL Patented Dec. 27, 1932 TES PAE are a:

JOHN E. CARR AND JOHN KNELL, 0F AURORA, ILLINOIS, ASSIGNORS T0 ALL-STEEL- EQUIP COIvIPANY, A CORPORATION 013 ILLINOIS LOCK MECHANISM Application filed May 1,

T is invention relates to a lock mechanism particularly adapted for use 1n lockers, and

has among its principal objects to provide a Other and further objects and advantageswill becoine apparent as the disclosure proceeds and the description is read in conjunction with the accompanying drawings, in which Fig. 1 is a front, elevational view of a lockor embodying one form of this invention;

Fig. 2 is a view showing a fragment of the door panel with the handle and lock cut away to expose the slotting of the panel;

Fig. 3 is a vertical,sectional view taken on the line 3-3 of Fig. 1;

Fig. at is a transverse, sectional view taken through the lock and corner post on the line of Fig. 1;

Fig. 5 is a perspective view of. the lock plug head;

Fig. 6 is a transverse section of a door and corner post embodying a modified form of this invention, the lock in this case being secured to the door panel 5 Fig. 7 is a vertical, sectional view of the same, the section being taken on the line 77 of Fig. 6;

Fig. 8 is a vertical, sectional view of the embodiment shown in Figs. 6 and 7, taken on the line 88 of Fig. 6; I

Fig. 9 is a view corresponding to Fig. 6 and represents still another embodiment of this invention; and

Figs. 10 and 11 are sectional views taken on the lines 1010 and 1111, respectively, of Fig. 9.

But these specific illustrations and the cor responding specific descriptions are for the purpose of disclosures only for it is realized that the latch mechanism may be embodied in other relations and in other forms without departin from the spirit of this invention.

A. conventional sheet metal locker has been chosen to illustrate one application of this invention, and comprises a steel frame is of 1930. Serial nae-48,907.

having

angle uprights

10, 11 and

cross channels

12, 13. A door 14 is hinged at'15 to the upright- 11 and is adapted to be closed flush with the front webs of the

angle uprights

10, 11. The, edges of the door are turned inwardly at 16 and again at 17 to form a U-shaped reinforcing flange or channel.

Slidably mounted within the channel at the free edge of the door is a latch bar 18' out from fiat strip ofstout metal. Catches 19 are riveted to the bar at suitable intervals and pass through elongated slots 20 in the wall 17 of the flange. Preferably, the heads of the catches are tapered to a blunt point, and notch s 21 are cut into their lower edges.

A door 'jamb 22 is riveted or otherwise secured to the front web of the angle upright 10 and is provided with a plurality of lugs 23 extending parallel to the plane ofthe door and occurring at intervals corresponding to the catches on the latch bar.

A handle 24 is riveted to the latch bar at 25, the arms passing through slots 26 in the door panel. The handle is cast with'an enlarged boss 27 at one end, in this case the upper end, and is bored at 28 to receive a lock plug 29 of a tumbler lock. The lock plug general cylindrical form but the head is split along its ariis at 30 fora short distance and then squared oii at 31, thus forming a shouldered semi-cylindrical head.

An irregularly shaped slot 82 isstamped from the door panel and merges with one of the slots 26. The shape of this slot is shown in Fig. 2 and is adapted to receive the semicylindrical head of the lock plug. The slot is so shaped that when the catches on the latch bar are in engagement with the lugs 23 of the door jamb, the lock plug may be r0- tated to a position which will bring the face 30 of he head beneath a shoulder-r33 of the slot, thus preventing the bar from being raised to open the door. The curved wall 34 of the slot accommodates .ly curved surface of the lockplug head.

V] hen the plug is rotated in a clockwise direction (Fig. 2) through the face 30 stri res the wall 35 and alines the plug head in the slot and permits the latch bar to be the correspondingr raised and the door opened. Inasmuch as the rotation of the lock plug is limited to 90, the insertion and withdrawal of the key 36 is greatly facilitated.

Referring now to Figs. 6 to 11 inclusive, there are illustrated two other forms of latch mechanisms, each of which has a stationary lock, that is a lock secured to the door panel and engaging the latch bar to lock the same against movement.

In the embodiment shownin Figs. 6, 7 and 8, a latch bar 37 is slidably mounted within the U-shaped channel at the free edge of the door and differs only from the latch bar 18 in that it is bowed at 38 and provided with a notch 89 cut from one side of the bar. The

lock in this case is secured to the door panel preferably above the handle. in all other respects. however. being similar to the lock already described.

When the catches on the latch bar are fully seated upon the door jamb lugs, the notch 39 is opposite the lock plug head, which may be rotated to the position shown in full lines in Fig. 7 to lock the bar against movement. To open the door. the plug is rotated to the position shown in dotted lines in the same figure. and the bar is then free to be raised.

In this embod ment, also. it will be noted that the parts cooperate to limit the rotation of the plug to a given angle so that the key 36 may be readily inserted and withdrawn.

In place of a bowed latch bar, a latch bar 40 may be substituted having a finger l1 punched from one edge and adapted to engage the lock plug head when the face 30 is in a horizontal position. When the lock plug is rotated to the position shown in dotted lines, Fig. 10, the latch bar is free from obstruction and the bar may be raised or lowered as desired. Since the tip of the finger 4C1 lies in a vertical plane, the plug can only be rotated through 90 degrees.

It will be understood that the invention is not limited to the particular form of lock plug head shown in the drawings and herein described, the gist of the invention being to provide a lock plug having an eccentric longitudinal projection and adapted to interlock with some relatively fixed or movable part, as the case may be, to lock the bar against movement.

e claim:

1. In a device of the class described, a door including a front panel member. a latch bar member movable with respect to the door, a handle rigidly secured to the bar, means to lock the latch bar against movement including a rotatable key plug having a semi-cylindrical head having a radius not greater than that of said plug, said head being directly engageable with an integral portion of one of said members.

2. A latch mechanism for locker doors comrisingin combination a movable latch bar,

a lock plug having a semi-cylindrical locking head directly engageable with the latch bar to lock the latch bar against movement.

3. A latch mechanism for locker doors comprising in combination, a movable latch bar, a rotatable lock plug having an eccentric, longitudinal projection, and a shoulder on the latch bar formed by stamping out a piece therefrom adapted to interlock with the plug projection when the latter is in-agiven position to lock the bar against movement, said plug being rotatable to some other position, whereby the bar can be moved to unlatch the door.

4. In a latch mechanism for locker doors, comprising in combination a movable latch bar, means for locking the latch bar against movement, including a lock plug having an eccentric longitudinal projection directly engageable with the latch bar, and a shoulder on the latch bar formed by stamping out a piece therefrom for limiting rotation of the lock plug to a given angle.

5. In a device of the class described, a door provided with an elongated slot having an enlargementat one end, a latch bar movable with respect to tie door, means to lock the latch bar against movement including a rotatable lock plug movable with the latch bar, said plug having a semi-cylindrical head adapted to coact directly with the slot and hold the latch bar against movement when the plug is in one position, but permitting the latch bar to be moved when the plug is H in another position.

In testimony whereof we a'liix our slgnatures.

JOHN E. CARR. JOHN KNELL.