US365730A - Latch fob stove doors - Google Patents

Description

(No Model.) 2 Sheets-Sheefi '1.

H. P. GOPE. I LATCH FOR STOVE DOORS.

N0. 365,730. PatentedJune 28, 188'].

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LATCH FOR STOVE DOORS. .NO. 365,730; I Patented June 28, 1887.

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i i HENRY P. COPE, OF DETROIT, MICHIGAN, ASSIGNOR OF ONE'HALF TO JOHN H. BISSELL, OF SAME PLACE.

LATCH FOR STOVE-DOORS.

SPECIPICATION'forming; part of Letters Patent No. 365,730, dated June 28, 1867.

Application filed March 7, 1857. Serial No. 229,998. (No model.)

To aZZ whom it may concern.-

Be it known that I, HENRY P. COPE, of Detroit, in the county of ayne and State of Michigan, have invented a new and useful Improvement in Latches for Stove-Doors, of which the following is aspecification.

My invention consists in alatch for doors, primarily designed for use on the doors of carstoves to prevent accidents caused by the door coining open when the car meets with an accident, hereinafter fully described.

Figures 1, 2, and 3 show my invention as applied to a sliding door, Fig. 1 being an clevation of the door, latch, and keeper, with part of the stove, Fig. 2 being an elevation of the latch and locking device in position, and Fig. 3 a similar elevation with the locking device out of position; Fig. 4, an elevation showing a modification of the invention, in which the latch is applied to a hinged door and is in position to permit the latter to open; Fig. 5, a view similar to Fig. 4., showing the latch locked; Figs. 6 and 9, detail views of the keeper or catch shown in Figs. 4 and 5;

Figs. 7, 8, and 10, detail views showing another modification in the construction of the keeper or catch.

1 represents the body of the stove, and 2 represents a door adapted to slide in the ways 3 3,which are secured to the body of the stove.

9 represents a keeper or catch, secured to the stove at the end of the ways 3, having therein a slot, 17.

16 represents a hook-headcd latch, pivoted at 10 to the'door 2, having its hook pointing downward, and 6 represents a similar but shorter latch, having its hook pointing upward, pivoted at 7 to latch 16, and having on its inner end a handle, 15, the pivot 7 being so located that the handle end of latch 6 is heavier than the hook end.

It is obvious that when latches 16 and 6 are forced through the slot 17 of the keeper or catch 9 the weight of the two latches will cause the hook on the end of the latch 16 to engage with the lower side of slot 17, while the weight of the handle end of latch 6 will cause the hook of said latch to engage with the upper side of slot 17. \Vhen the handle 15 is raised,the under surface of the other end oflatch 6 will bear against the lower sideof slot 17, and will, through pivot 7, lift the hook oflatch 16 out of engagement with the lower side of slot 17, as clearly shown in Fig. 3, so that the door will be unlocked and can he slid open.

4 represents a locking device, pivoted at 13 to a lug, 14, on latch 16, above the handle end of latch 6, and may have in its upper end a handle, 5, whereby it can be swung by hand on its pivot. The lower end of locking device 4 is formed in two caln projectionsfll and 12, the distance between the end of cam 11 and the pivot 13 being so small that when cam 11 is over latch 6 said latch can be so raised .as to unlock the door, as shown in Fig. 3, and the distance between the end of cam 12 and the pivot 13 being so greatthat when cam 12 is over latch 6 the handle end of said latch cannot be raised, and the door is kept locked, as clearly shown in Figs. 1 and 2.

The foregoing part of the description applies to the latch when constructed for sliding doors. lVhen it is to be used on swinging doors, the ends of the latch are not hooked, bntare made plain or slightly widened at the end, as pre ferred.

Referring to Figs. 4, 5, 6, and 9, 18 18 represent two hook -catehes, forming a keeper, and secured to the body of the stove and pro jecting therefrom, like the ordinary hookcatch of a thumb-latch, the lower catch 18 being adapted to engage with latch 16 and the upper one with latch 6.

In the modification shown in Figs. 7, 8, and 10 a single arrow-headed catch, 19, is used instead of the two catches 18, and the under part of the outer end of latch 16 and the up per part of the outer end of latch 6 are cut away to form a slot, 20, between said two latches, into which the point of the arrowheaded catch 19 enters and spreads the outer ends of said latches in opposite directions, latch 16 riding over the catch and the latch 6 riding under thecatch and closing behind the shoulders thereof by gravity. The principle of the latch is the same in all the details herein shown, and the locking device operates the same, no matter which of said details is used.

It will be noticed that the locking-cam at is so proportioned that so long as the stove is in a position in which the weight of latches 16 and 6' hold them engaged with the catch the tendency of the locking device is to remainvin the position shown in Figs. 3, 4, and 10, in which itis i'noperative,but that if the stove be thrown into any position in which the action of gravity would tend to open the latches theheavier end of locking-cam 4 is thrown out of equilibrium and falls into the position shown in Figs. 2

and 5, in which it holds the latches securely locked. v

WhatI claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with a door and a keeper, of a double latch, one pivoted at its end to the door and the other pivoted to said first latch at a point between the center or gravity of the second latch and its outer end,

each of said latches having ahook or its equiv- 2o alent at one end to engage the keeper, substantially as and for the purposes described.

2. The combination, with a door and a keeper, of a double latch, the inner one pivoted to the door and having a lug and the 25 outer latch pivoted to the inner latch, each of said latches having a hook or its equivalent at one end to engage the keeper, anda swinging locking device having two cain projections and pivoted to the lug on the inner latch 0 above the outer latch to lock the same when the action of gravity tends to unlock the latch, substantially as described.

HENRY P. COPE.

Witnesses: r

SUMNERw COLLINS, CYRUS E. LOTHROP.

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