US928030A - Latch for doors, gates, windows, &c. - Google Patents

Description

B. R. GRAMPTON, LATCH FOR DOORS, GATES, WINDOWS, Mr. APPLICATION FILED SEPT.17,1908.

928,030. I Patented July 13, 1909.

dow shutters, gates, etc.

sAsIL n. c-RaMrrom OFGIlIGAGQ; rLtINoisQ-L riz'rmcnnomnoons, eamns,,wznnows,,&e.

naeeao so To all whom tt mag concern:

Be it: known that; I, BASIL It. GRAMP'ION, ,a citizen of the United States, residing at Chicago, in the county of (lookandfStatc ol Illinois, have invented certain new and useful Improvements in lfiatches for Doors, Gates, llhndows, or any vother Two Relatively- Movable Parts, of. which the following is a;

specification.

The object olthe invention is to provide a Sl11'1')l0 and'mex )GIISIVB but atthe same time ed for use on refrigerator doors but it is also welladaptedafor use ondoors, generally, and

onother obj ectssuch as window sashes, winwas originally, designed and intended for doors, the following specific descriptionwill be confined to its application thereto.

The latch comprises two members, one of which has a pair of jawsadapted to be op ened and:closed,-'wh1ch member may be called a.

I .keeper and the other of which consists ofa pinwhich is adapted to engage and be, inv

turn, engaged by the keeper. Preferably the keeper is securethto thedoorjamb and thepin is carried by the door, but thisis not essential; and the arrangement may be reversed, if desiredi The invention; consists in the featuresof novelty that are hereinafter described with reference to the accompanying drawing which is made-apart of this specification, and inwhichz,

Figure 1:18:21S1Cl6 GlEViLUOIIOf the keeper with the open positions ofthe jaws shown by full'lines and theirclosed positions indicated- Figs. 2 and31are front ele' by dotted lines. vations of thekeeper showing the jaws in op en and closed position, respectively. Figs.

4 and 5are, respectively, aplan view and a,

front elevation of the pin.

The :keeper comprises "a base-plate A having curved spring-arms A and a pair ofrlevers orv arms B which are jointed at their outer ends to the extremities of the spring-arms, and at theirfinner, meeting ends are jointed to each others-forming a. toggle joint of charac-' teristic construction, The base-plate A is secured by screws or other suitable means to the dooror to the door-jamb, as the case may Specification c t Letters Patent. Application filed Septemberil'i', 1908. Serial No) 453,410. I

Since the latch dotted linesin Fig. 1,.

3 toggle arms toward Patented July; 13, 1909.

be, ,a fragmentofwhichdoor or door-jamb is: shown at E. The juxtaposed ends otthe arms ,3 of the toggle joint are provided with, jaws D adapted to receive and engage a pin F on the door, or the door-jamhasthe case may be, and hold orconfine it whenthe door is closed and automatically open andrelease fthe pin when pressure is exertediuponthem. inthe process ofjopening the door.

The jaws, D, are, carried at or near the in? nor or meeting ends of the two arms ofthe toggle joint Their adjacent sides arecons cave and follow semicircular lines so that when the jaws are closed. thereis a circular space between them adapted toreceive, and corresponding to the cross sectional shape and size of, the pin, F, whichlatter is carried" by the door (or door jamb), a fragment ofi whichis shown at E as aforesaid.

Themeeting faces of the jaws are similar joint between the toggle arms, as shown "more clearly in Fig. 3, theobjecto'fwhichiis to cause thepin to bear firmly upon both j aws during the opening movement" and in.- sure the moving of the jointbetweenthe toggle arms beyond. their center of movement. It willbe understood that when the door is'open the jaws will}be open, asshown by fulllines in Fig, 1 andthatuponclosing the force theitoggle arms past their center of movement to the position indicated by This is permitted by the outward yielding of the springs as thetoggle arms approach their-center of-movement, after whichgthereactionof the springs willhold said-arms in the positions indicateda An outward pull upon theportions of the j aws and causean action the reverse of that just described, returningthe poggle arms tothe position-s shown by fulli mes.

What I claim, as new is:-

1.-A, latch-haying a keeper, said zkeeper; having, in combination, apai'r of jaws, a pair Oftogglearlhs carrying said jaws, andmieans for-yieldmgly resistingthe movement of the their. center of move-- ment.

2; A latch having a keeper, said keeper having, in combination, a pairof jaws, a pam- 7, to'each other. andtheir meetin g ends or faces are diagonal relatively to the axis. of'the.

door the pinwill enterbetween the jaws and toggle arms are j inted.

of toggle arms carryin said jaws, and a 'pair i having, in combination, a pair of jaws, a pair of s'prmgs to W ,lch "t 1e outer ends of said I of toggle arms carrying said aws and means i for yleldmgly resisting the movement of said x 3. A latch having a keeper, said keeper toggle armstoward theircenteroi movement,

having, a pair of jaws the adacent faces of l the opposite faces of the j aws being diagonal which are concave, a pair of toggle arms earrying said aws, and means for yieldingly resisting the movement of said toggle arms to- I Ward their center of movement, in combinarelatively to the axis of the joint of the toggle arms.

BASIL R. (BRAMPTON;

tion with a pin adapted to engage the toggle Witnesses: arms between the jaws. D. M. HOPKINS,

v 4. A latch having a keeper, said keeper N ROACH.

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