US1693912A

US1693912A - Latch

Info

Publication number: US1693912A
Authority: US
Inventors: Walter E Worthen
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-07-06
Filing date: 1926-07-06
Publication date: 1928-12-04
Anticipated expiration: 1945-12-04

Description

' Dec 4, 1928. 1,693,912

W. E. WORTHEN I LATCH Patented Dec. 4, 192,8,

; UNITED STATES PATENT OFFICE.

WALTER E. WORTHEN, OF WESTIHOLLYWOOD; GAL IFORNIA.

LATCH.

Application filed u1 y 6,

My invention relates to and has for its,

purpose the provision of a latch for closures such as doors, casement windows and the like, and which when in applied position s capable of being operated to function as a latch, and what is commonly termed a night latch for doors. 7

It is also a purpose of my invention to provide a latch of the above described character which is extremely simple, inexpensive and durable in construction, readily applied to a closure and its frame and when in applied position quickly convertible from a latch to a night latch, or vice versa.

' I will describe only one form oflatch embodying my invention and will then point I out the novel features thereof in claims.

In the accompanying drawings,

Figures1,'2, 3 and 4 are fragmentary vertical sectional views showing one form of latch embodying my invention in applied position to a closure and its frame, the several views illustrating the several positions which the'invention is adapted to occupy;

Figure 5 is a horizontal sectional view taken on the line 5-5 of Figure 1;

' Figures 6 and 7 are views taken on the and the casing is secured within thepocket 4o 16 by flanges 18 through which screws 19 extend. The frame of the, closure is indicated at 20 and the vertical edge of the frame is provided with a' pocket 21 spanned; by a keeper plate 22, the latter beingformed with a vguide flange. 23 and a-slot'24: inclined with respect to thevert-i'calas clearly illustrated in Figure 6.

J ournaled in the casing a bolt 26, the shaftbeing extended beyond the casing and through a suitable opening in the closure 17 as clearly shown in Figure 6, where it is provided with a handle 27, by which the shaft can be rotated toactuatethe bolt 26. An escutcheon plate 28' is loosely mounted on the shaft 25 and this the casing 15 1s "a squared" shaft 25 to which is secured at apoint within 1926 Serial No. 120,824.

plate is secured to the inner side of theclosure 17, as shown in Figure 7 The bolt 26 is relatively, flat and is mounted eccentrically- .on the shaft 25, its nose or outer end being formed with a rounded and beveled edge portion 26. This portion 26' merges into a sec 0nd rounded edge portion 26 and at one end of the portion 26 is a fiat edge portion 26. The portion 26 is disposed at right angles to a-second flat portion 26 which merges into the rounded nose shown in Figure 2.

portion 26, all as clearly The bolt 26 through the medium of the shaft25 is capable of being rotated to occupy any one of the four positions shown in Fig ures 1 to 4, inclusive, and in any one of these positions the bolt is engaged at its edge by a leaf spring 30 disposed within the casing 15' and having overlapped curved portions 31 against which thebolt is adapted to hear so that the spring functions to urge the bolt in a counter-clockwise direction as when viewed in Figure 2. Itis now to be notedthat the arrangementof the leaves 31 of the spring is such that they havesliding engagement with each other so as to permit of them being compressed various degrees, depending upon the position of the bolt 26.

In practice, the bolt 26, when in the positions own in Figure 1, functions as alatch,

the spring 30 engaging the curved edgepor- 'tion 26" and thus urgingthe nose 26 out' wardly to the position shownmore clearly in Figure 5, so that as the closure 17 is moved to Y closed position within the frame20, the beveled edge 26 will engage the flange 23, so as t v to retract the bolt against the tensioniof the springSO until the bolt is moved opposite the slot 24 of the keeper plate when the spring functions to project the bolt into the slot24. l/Vith'the bolt engaging within the keeper the closure is latched in. closed position and in order to open theclosure it is necessary toro- 7 tate'the bolt inwardly to the position shown so as to remove the bolt from the keeper. 4

Referring now toFigure 3, the bolt 26. is 7 shown in a position in which it functions .to i

draw the closure into firm engagement with the frame, The bolt is moved to this position by rotating the shaft 25 in a counter- 1 clockwise direction from the position shown in Figure 1 in which the nose of the bolt is moved downwardlyalong one edge of the slot 24, andbecause of the inclination of such in Figure 2 by manipulation of the handle-2T v edge it functionsas a 0am to draw the clo sure inwardly of the frame. In this position of the bolt, one corner of the latter 18 men gagement with the leaves 31 of the spring,

as clearly shown. in Figure'3, sorthat the spring is ineffective to urge the bolt in one direction or the other, wherefore the bolt is retained in this position. The closure may be unlatched by rotating the bolt to the position shown in Figure 2, and after the closure has been opened the bolt can be rotated to the position shown in Figure 4;.1 With the bolt 7 i in the position" shown in Figure 4,-the flat edge portion 26 engages the leaves 31; of the spring so that the spring functions to urge the nose of the bolt inwardly againsta stop pin 32. The bolt is thusreta-ined'in this position by the spring.

In addition ,to functioningas a latch for retaining a closure in closed position, in-

vention can also be employed as a night latch for doors, and when. it. is desired 'thatthe night latch be ineffective to latch the door itcan be moved to the position shown in Figure 4:, in which the conventional door securing 7 means can function in the normal manner,

When my invention is functioning as a latch, the bolt 26 canflbe secured in the fastening position shown in Figure 3 by the provision ofa bolt. 33 slidable on the escutcheon plate 28 to engagewithin the recess 34 oftheshaft 25, the mounting of thebolt 83 being such changes and modifications may be made, therein without departing from the spirit of the invention and the spirit and scope of the appendedclaims. p i p i I claim as my invention:

L 1. A latch comprising a'keeper having a slot therein'inclined with respect to the vertical, a rotary bolt having its periphery formed to provide a beveled and rounded portion, another roundedwport-ion spaced from the first portion, and two straight portions to forma corner, a springengaging.

thesecond rounded portion of thebolt to normally urge the bolt into engagement with the keeper, and a shaftby which the bolt-is I rotated in one'direction to move the bolt out described.

' of engagement withthe keeper and in another direction to move the 'bolt intov engagement with one wall of the earn slot for thepurpose 2. A combinedlatch bodied in ciaim 1 wherein thecorner of the cure the bolt in said position.

bolt engages thespring when the boltisf in the last mentioned position to releasably se- 3; A combined latch and fastener embodied in claim 1 wherein the shaft is operable to continue the movement of the bolt in and fastener asem whereinthe bolt will befiinefiective tofenga-ge the keeper andto cause the sprin g to functlon to retain the bolt in said position.

itAylatch comprisingja keeper plate 'from, a flat bolt mounted to rotate with the shaftin the casing and. having its peripheral surface providedwith abeveled and rounded edgelportio-n, another rounded-ed e portion spacedjfrom the first portion andjangularly disposed edge portions, forming a corner, spring means engagingthe second rounded edge portion of the bolt to normallyurge the latter intoengagementwith the keeper, said spring meansicompri'sing a leaf spring" formed to provide a flat portion enga mg a wallfof the casing and having its en s curved and benttowards each other to overlap inslidjngfi relation so as to permit various degreesof compression of the spring [underthe wiping action of the bolt whenrotate'd, and a handle on the shaft fort-m ti thebpoltg 5 A latch comprising a keeper plateadapted to be secured to a closureframe .and'having slot therein-inclined with respect to the vertical, 2. caslngadapted to be secured to the V closure of thefra'me, a shaft rotatably mount;

ed in the casing and projectin therefrom,a i

1 flat bolt mounted to rotate witi theshaft in the casing and having a beveled and rounded edge portion, anotherrounded edge portion spaced fro nthe first portion and angularly disposed edge portionsforming a corner,. spring means engaging the (second rounded; Jedge port on of thebolttonormaH] urge the latter into engagement with the eeper,

said spring means comprising a leaf spring .formed to provide a flat portion engaging a wall of theclasin' and having-itsends curved and bentytowar s eachother "to overlapjin I sliding relation so as {to permit various de- 'grees .ofcompres'sionof the spring under the r wiping actionof the bolt when rotated, a ban cllefon the shaft for rotating the bolt, an escutc Q p il ef adaptedto be secured tothe closureand havingan opening through which the shaft-extends, said. handle having a notch, and a fastening member'slidably. mounted on I the escutcheon plate Vjandfadapted to 'be en gaged With the notclimWhfi D' fihe bolt occupies the position in whichits second rounded portion is inengagement with the keeperislot,

to thereby fasten the bolt. against movement. f 6. A latchflcomprising akeeper havinga cam'surfaceand adapted tosbe secured to a closure frame, a rota'ry bolt adapted toy'be mountedon the closureo'f the frame and hair- 1ng abeveled side portion,aroundedperi herport ons' formlng a corner,*means engaging the lastinentioned 'directionto a posit-ionthe periphery'of the boltf ornormally urging al portion and'angularly disposed perip eral V the bolt to rotate in one direction to-one position wherein its beveled portion will engage the keeper duringa closing movement of the closure to thereby effect a partial rotation of the bolt in the other direction against the action of the urging means so as to move the bolt to a second position to permit latching engagement of the'bolt with the keeper, means for rotating the bolt against the action of the urging means and by which the bolt can be rotated inthe first mentioned direction to occupy a third position wherein the bolt will engage the cam surface of the keeper and the urging L means will engage said corner of the bolt so as to be ineffective to urge the latter to rotate in either direction, and by which the bolt can be further rotated in the first mentioned 7 direction and from its third position to a fourth position wherein the bolt is incapable of engaging the keeper and the urging means will engage one of the angularly disposed portions to urge the bolt to rotate in the first mentioned direction and away from the keeper.v v v 7. A combined-latch and fastener as embodied in claim 6 wherein the spring means constantly engages the peripheral surface of the bolt and comprises a leaf spring having overlapping curved portions capable of sliding engagement with each other to permit va rious degrees of compression of the spring under the wiping action of the bolt when rotated.

WALTER E. WORTHEN]