US1610711A

US1610711A - Door-latch bolt

Info

Publication number: US1610711A
Authority: US
Inventors: Walter R Schlage
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-08-02
Filing date: 1923-08-02
Publication date: 1926-12-14
Anticipated expiration: 1943-12-14

Description

Dec. 14, 1926. 1,610,711

W. R. SCHLAGE DOOR LATCH BOLT Filed August 2. 1923 I lfb-27701" Patented Dec. 14, 1926.`

UNiTED STATES WALTER n. soHLAGE, or SAN FRANCISCO, CALIFORNIA.

' nooafLATcH BoLT.

Application led `.lllugust 2, 1923. Serial No. 655,220.

This invention relates to a door latch and especially to a structure which permits the latch and its actuating plate to be assembled and formed of pressed or die-cut metal.

The object of the present invention is to generally improve and simplify the construction of devices of the character described, and especially to provide a latch and an actuating plate which are constructed of sheet metal and adapted to b e cut, formed and assembled by die action. n,

One form Which my invention may assume is exemplified in the following description and illustrated in the accompanying drawings, in which- Fig. 1 is a planviewof a blank from' which the actuating plate is formed.

Fig. 2J is a perspective view of the actuating plate showing the side anges bent to form the head portion.

Fig. 3 is a perspective view of the latch shell.

Fig. 4C is a central longitudinal section through the latch and its actuating plate.

Fig. 5 is a side elevation of the latch, and its actuating plate. y

i Referring to the 'drawings in detail, and particularly to Figs. 1, 2 and '3, A indicates 'a door latch actuating plate, 2 a pair of 3Oirearwz'irdly. projecting lugs, which are engaged by the retracted mechanism of thel lock, and 3 a pair of side flanges which are bent upwardly to form an inner head member generally indicated at B. The actuating plate, 'together with the retracting lugs 2 and the head member B, is formed from a metal blank such as shown in Fi 1; this blank being cut from sheet .met-al y means of a blanking die. After the blank las been formed it is subjected to a second die operation and during' this operation the side wings indicated at '3 in Fig. 1 are bent up 2. The plate Ais at t-he same time slight offset as indicated at 4 to bring the plate in alignment with the retracting mechanism of the lock. By referring to Figs. 1 and 2, it will be noted that the forwardl ends of the wings 3 are cut on an angle as shown at :9. This is of considerable importance as this angle produces an inclined face when the head member B is formed.

The latch proper is also constructed of sheet meta-l, a blank being irst,formed which in turn is subjected to a set of drawing dies, ,these dies forming a shell'like member such gto form the head member B shown in Fig. `.'Y

as shown in Fig. 3. The shell consists of a rounded portion 5, a flattened side face 6, and an end or bottom section which is arcuated or inclined as indicated at 7. The shell when formed is slipped over the hea-d member B. The inner edge of the shell is then seamed or flanged as indicated at 8,

thereby securing the shell with relation' to the head member B; the operation of blanking, forming and assembling the respective parts forming the actuating plate and the latch being thus completed. The ob'ect of cutting the wings 3 on an angle as in icateol at 9 tofor-m' a forwardly inclined face on thehead member B is important as it produces a sha e identical to the shell shown in Fig. 3. 6 engages the lower` side of the plate, the rounded portion 5 encloses' the side wings 3, and the inclined end 7 of the shell engages the inclined face orangularly cut side wings shown at 9. A complete guide and support for the shell are thus formed and it is at the same timefsubstantially reinforced so as towithstand the usual blows encountered when in use.

An actuating plate and latch constructed and assembled in the manner described are not only cheap to manufacture but they alsoreduce weight and increase the strength of the same; that is, it is well known that metal parts cut and shaped by die action are much tougher and stronger than articles of this character which are cast; castings being as a rule too brittle and subject to breakage, particularly if the metal is fairly thin. Such a metal as brass, however, may be used to advantage where castings of this character are employed as it is not as brittle as castiron or the like, butit increases costv and it does not produce a light weight structure such' as illustrated in this application. For instance, the actuating plate indicated at A, together with the retracting lugs 2 and the head member B, may belformed of ordinary cold rolled steel, black irony or heavy sheet metal. The latch shell shown in Fig. 3 may also be drawn from similar metal, for in-` stance, soft steel, but if an attractive article or a high-grade product is desired, the shell is drawn from brass, thus one part of the,

latch mechanism may be constructed of one metal and the other part of another metal.

A variety of grades and products may thus be obtained without chan 'ng the construction or design, and alig tA weight product he flattened side of the shell lVhile the invention specified is more orv less specifically illustrated, I wish it understood that various changes in form and proportion may be resorted to Within the scope of the appended claims; similarly, that the materials and finish of the several parts employed may be such as the experience and judgment of the manufacturer may dictate or various uses may demand;

Having thus described my invention, what l claim and desire to secure by Letters Patent 1s 1. A device of the character described comprising a flat plate provided with a latch carrying end and an actuating end, a pair of side Wings formed on the latch carrying end, said Wings being bent upwardly to join each other and rounded to form a latch carrying head, an otliset formed in the plate backof said head, and a shell-shaped latch adapted to be received by the plate and the Wings forming the head and completely enclosing the same, the inner end of said shell being seamed over the olset portion of the plate and the ends of the Wings forming the head to secure the shell against endwise removal.

2. A device of the character described comprising a plate, a pair of retracting lugs formed on o-ne end thereof and parallel With the plate, apair of side wings formed on the opposite end, said wings being bent upwardly to join each other and rounded to form a head member, said Wings presenting.

an inclined forward surface, an offset in `the plate back of the Wings and a shell like WALTER R. SCHLAGE.