US93685A - Improvement in boor-latches - Google Patents

Description

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Letters Patent No. 93,685, dated August lf?, 1869.

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IMPROVEMENT IN 1DOOIR-I'JATCIE- IESl Odw- The Schedule referred to in these Letters Patent and making pari: of the same.

To all whom it may concern:

Beit known that I, F. W. DEAN, of Tremont, county vof Tazewell, in the kState of Illinois,.have invented a newand improved Door-Latch; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part of this speciiication, in which like parts are indicated by like letters iu the several` h'gures. y

' The nature of my invention' consists in construct-ing a latch or lock, dispensing with all springs, and making the outer case or covering answer 'the purpose of a pull. f

To enablethose skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In the drawingsp Figure 1 represents an elevation of my improvement, say on the inside of a door, A being the -catch or keeper, and B, the covering of the latchproper,

which forms the pull by which to open the door on that side.

Figure 2 is an elevatiou'of a back plate, C, ou the same side of the door, its latch and lever, the covering-plate B, being removed;

a shows, in dotted outline, the position of the keeper'.

b is the latch propel', pivoted at c, or rotating on a v screw which fastens B and O to the door, the inner `end of this latch being weighted, as seen, to bring it down automatically after having been raised lby hand.

Itis shown raised in this figure, in dotted outline,

as also its lever, its upper-movement iu this direction being limited by a stop, d, a mere projection on the outerface of plate (l.

Underneath the latch lfthere is a lever, e, shown more distinctly in Figure 4, which is a partial section of the stile, 8vo.

This lever has a projection, j', at right angles to it, which passes through plate C, and some dstance into the door, its inner end being square, or some other suitable shape to answer its purpose, or by which it may be rotated by an outside lever, D, on the other side of the door, and the cylindrical `part of which, g, entering the door, being hollow, and fitting over f, by which to impart motion to e-or raise the latch b from the outside. A

A'projection or stop, h, on. plate C, and under the lever e, holds it and the latch b in a horizontal. position, or from falling below the plate C or pull B, which covers and conceals them.

That part of the latch b which enters the keeper, isl so shaped, rounded, or curved on the inner side and top, making its faces triangular Aand the ends pointed, as that when it strikes the keeper, it will' rise automatically, being forced entirely under B, when the I door will shut andthe latch fall, its extreme end passing ybehind the, keeper.

lhe keeper may be shaped alike at top and bottom, so as to answer for a right or left-hand door.-

A sliding stop, fi, is shown in iig. 1, for the latch, but

a pivoted one, as usual, may be substituted.

The pull `or plate B may be so shaped at each end 'as to answer for a right or left-hand lock, by a slight alteration in the pattern, which must be adapted to -the securing and operation of the latch, as also to hold in place its lever e, anyllateral movement of which is .to be prevented by plate B, which has a propen bearing against the end of e, where itv is connected to f, being countersnnk, '&c.

In this case, also, the back plate C should also be made alike at both ends.

The lever emust always be of a suitable length to releasethe latch from the keeper, and those parts of the levers e and l) which enter the door, and tit each other, can be made adjustable, so as to suit different thicknesses of doors.

An ordinary door-pull, E, tig. 3, may be fitted on the outside of the door, over the lever D.

The operationl issimply as follows:

Supposiug the door to be closed, to enter from the outside, the fingers are placed under the lower edge of E, pushing up the lever I). This carries up also the inside lever c, and through it raises the latch l1, as shown in dotted lines in fig. 2, releasing it from the catch A, when the door can be opened.

It will be found self-shutting, or can be shut by raising the latch, the same as in opening it.

The door can be opened from the inside the same as from the ontside.

The several Vparts are constructed of the usual materials, as may be found convenient.

, The 'pulls may bc japanncd, bronzed, plated, or

enamelled with glass or porcelain.

rlhe putting on or tting of the latch to the door is too evident to require description.

The 'advantages of a my latch are, that it is more easily and quietly operated, is not liable to 'get out of order, having no spring, and is certain to catch, ifv

properly constructed;v

A door can be closed by gentle pressure, like others, withoutiaising the latch by hand, and the article can be produced at small cost.

The pulls form acase .to the operating-parts.

A latch constructed and operated like inine may be enclosed in a case, or be made apart of an ordinary lock.

The latch may be enclosed in a metallic ease, and a detached pull secured over it.

I am aware of the patent of Shepard and Sigourney. This I do not cla-im. My invention requires no cutting of the door, but can be screwed upon the outside of the same.

Having thus described my invention,

What I. claim as new, and desire to secure by Letters Patent of the United States, is-

1. The combination of plate/.0, weighted latch b, and levers e D, constructed and arranged in the manner as shown and described.

2. The combination of cover or pull B with the several parts aforesaid, when an'anged as described.

F. W. DEAN.

Witnesses:

S. M. HOBART, W. W. STILEs.

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