US1662255A - Push catch for doors - Google Patents

Description

March 13,1928. 1,662,255

T. F, STUART ET AL PUH CATCH FOR DooRs Filed Oct, 20. 1926 Patented Mar. 13, 1928.

UNITED STATES 1,662,255 PATENT OFFICE.

THOMAS F. STUART AND HENRY A. MOORE, OF LOS ANGELES, CALIFORNLA.

PUSH CATCH FOR nooRs.

Application filed `October 20, 1926. Serial No. 142,843.

Our invention relates to a push catch for doors and the subject matter herein disclosed and claimed is an improvement on the push catch that forms the subject matter ot' our eo-pending application for U. S. Letters Patent tiled March 25, 1926, Serial No. 97,193. i

The principal objects of our present vinvention are to generally improve upon and l0 simplify the construction of the latching device that is set forth in our aforesaid copending patent application as well as other existing forms of similar devices;-to provide a push catch that` is especially applicable for use on the doors of cupboards, closets, medicine leases, book cases', and the like; to provide a push catch that may be readily adjustedito permit of its being easily and quickly installed on doors of difierent thicknesses; and to provide af catch of the character referred to wherein the spring that normally holds the hook or catch mcmber in engagement with the latch plate is arranged so that it bears directly upon said hook andsaid spring being arranged in a housing so as to minimize the danger of its being lost while the parts of the catch are being assembled and applied toa door.

`With the foregoing and other objects in view, our invention consists incertain novel features of construction and arrangement of parts that will hereinafter be more fully de-v scribed and claimed and illustrated in the accompanying' drawing, in which- Fig. 1 is a vertical section taken lengthwise through the center of a push catch of our improved construction and showing the same in position for use upon a door.

Fig. 2 is an enlarged vertical sectiontaken on the line 2-7-2 otFig.` 1. l

Fig. 3 is an enlarged horizontal section taken on the line 3`8 of Fig. 1. f

Fig. 4. isa perspective view of a block that is adjustably mounted on the push rod of the catchand which block is etfective in actuating the latching hook of the device.

Fig. 5 is a perspective View of the latch-kV inghook.

Fig. 6 is an enlarged horizontal section taken on the line (5J-tof Fig. 1.

Referring by numerals to the accompanying drawings which illustrate a practical embodiment of our invention, 10 designates y a door and 11 a shelf or partition to the rear sa of said door, and-for the accommodation of wardlyk from plate `15.

our improved latch a relatively small circular aperture 12 is formed through the door 1n a horizontalplane pist below the plane occupied by the under tace oi the sheltI or `Positioned on the inner tace of vdoor 10 below the opening 12 is a narrow vertically -disposedplate -15 and formed integral with .the upper portion of said plate is an externally threaded tubular member l16 that pro- )ects into the aperture 12. Plate 15 is secured to the door by means of a Vscrew 17 `that passes through an aperture at the lower end of said plate. i

Formed integral with and projecting Aoutwardly from plate 15 are vertically ydisposed parallel walls 18, the lower ends. of which are connected byL a channel-shaped "member 19 that serves as a housing for a spring hereinafter morefully described, and yformedfin the upper portions of the' parallelwalls 18` open at their outer ends.

Screw-seated yon the threaded Vtubular member 16is the internally vthreaded inner portion of a tubular member`21, the outer end of which terminates in ahead 22 and formed in the outer aceof this `head'is a slot 23 that is adapted `toreeeive.thepoint of a screw driver. l

Arranged to slide freely through the tubular members 16 and 21 is a push rod 24 having a-button 25 on its outer end and the inner end portion26'oi this push rod is threaded and projectsa short distance in- Mounted on this threaded inner portion 26 of thepushrod is a block 27 having a threaded `aperture 28 that receives the threaded portion of said push rod and depending from saidblock is a centrally arranged platel 29 having a curved or'inclined iront tace 80. v This plate 29 `occupies avposition between the upper are horizontally disposed `slots -20v that are portions of the walls 18 and formed integral relative to said block and the block may be. locked to the push rod by a set screw 32 that; is seatedin the side of said block and it may be screwed inward to bear on the pushrod.

Seated in the ears 18 below the slots Q0 therein is a. pin 33 that serves as a pivot for a plate Bit that is positioned between said ears and formed integral with and projecting outwardly1 from the upper portion ot this plate is an arm with the outer end of which is formed integral an upwardly projecting hook 3G that is adapted to engage behind the depending finger 14; to retain the door in closed latched position.

Formed on the upper inner corner ot plate 34 is an inclined tace 37 against which engages the inclined or curved face i3() on plate Q9. Formed integral with the lower end ot plate let is a short pin 38 that normally occupies a position in the forward end of spring housing 19 and supported by said pin is one end ot an expansive coil spring 39 that occupies the housing 19 and the rear or inner end of which 'spring is suitably supported on plate 15 at the inner end ot the housing 19.

Mounted on tubular member 21 between the outer tace of door 1() and the head Q2 is a knob 40 which may be of glass, wood, metal, or composition.

then the parts ot our improved latch are properly assembled and applied to a door, they occupy the positions as illustrated in Fig. 1 with hook 3G engaging depending finger 14 and being yieldingly held in such position by the expansive power exerted by spring 39.

To release the catch and open the door, knob 4t) is engaged between the first and second fingers ot' the hand and the thumb is pressed against button 25 to force push rod 24 inwardly and the bearing ot' the face Si() on depending plate Q9 against the lface 3T on plate 3J: will swing said last-mentioned plate. upon the pivot pin 33, thus compressing spring 39 and swinging the outer end oi' the arm and hook 36 dmvnwardly so that said hook is disengaged from linger lt and the door may now be opened. As the pressure ot the thumb on the push rod relieved, the expansive power of spring 3S) will restore the parts to their normal positions and with hook 37 positioned so as to strike, pass, and reengage finger 14- when the door is again closed.

Our improved latch may be readily adjusted so as to be applied to doors of different thicknesses by screwing the tubular member Q1 inwardly or outwardly upon tubular member 16 and such adjustment may also be made for the accommodation of knobs of different lengths. Block 27 may be readily adjusted on the. push rod by screwing the same inwardly or outwardly, thus controlling the normal position ot arm 35 and hook 3G and likewise regulating the length of the vertical swinging nioven'ientv of said arm and hook.

A particularly desi rable feature of our improved push latch is the arrangement ot the spring 3i) in the housing at the lower ends ot the ears 1S as such arrangementr enables the spring to bear directly upon the catch hook and said spring is located so as to minimize the liability of its being disarranged and lost while the parts ot the catch are being assembled. adjusted. and applied to a door. A further desirable feature of our improved construction is thc arrangement whereby it is only necessary to bore a single hole in the door for the acconmuulation ot thc catch and to .set two screws. one to secure the. plate 15 to the door and throther to .secure the catch plat'A lil to the shclt or partition.

A door latch ot' our iimnm'ed construction is comjniratiiely simple. may be. easilyv and quickly installed and adjusted so as to be applied to doors ot diilcrent thickness s and said latch is adapted to receive practically all sizes and designs of ornamental knobs.

It will be understood that minor changes in the size, form and construction of the various parts ot our improved door latch may be made and substituted for those herein shown and described without departing from the spirit of our invention, the scope of which is set forth in the appended claims.

'We claim as our invention:

1. A door latch comprising a tubular housing that is adjustable in length, a knob removably mounted on the outer portion of said tubular housing, a plate at the inner end of said housing, which plate is adapted to be secured to the door to which the latch is applied, a latching hook pivotally mounted on said plate, a push rod passing' through the tubular housing, a member adjustably mounted on the inner end oi said push rod and bearing on the inner portion ol' the latching hook above its pivot and :i spring bearing on the inner portion of said hook be. low its pivot.

2. A door latch comprising a tubular housing that is adjustable in length, a knob removably mounted on the outer portion of said tubular housing, a plate at the inner end of said tubular housing, which plate is adapted to be secured to a door, a pan` ot spaced ears projecting outwardly from said plate, the lower portions of which ears are formed into a liousing, a latching hook hav ing its inner end positioned between and pivotally connected to said ears. a push rod cxtending through the tubular housing, a member adjnstably mounted on the inner end of said push rod and bearing against the inner end ot said latchincr hook above its pivot and a spring positioned within the loo luf,

lltl

housing at the lower ends of said ears, which spring bears on the inner end of the latching hook below its pivot.

3. A door latch comprising a tubular housing that is adjustable in length, a knob removably mounted on the outer portion of said tubular housing, a plate at the inner end of said tubular housing, which plate is adapted to be secured to a door, a pair of spaced ears projecting outwardly from said plate, the lower portions ot' which ears are formed intoa. housing, a latching hook having its inner end positioned between and pivotally connected to said ears, a push rod eX- tending through the tubular housing, a meniber adjustably mounted on the inner end of said push rod and bearing against the inner end of said latching hook above its pivot, said adjustable member having a pin and slot connection with the ears that project inwardly from said plate and a spring positioned within the housing at the lower ends of said ears, which spring bears on the inner end of the latching hook below its pivot.

4. A door latch comprising a tubular housing that is adjustable in length, a knob removably mounted on the outer'portion of said tubular housing, a plateat the inner end oit said tubular housing, which plate is adapted to be secured to a door, a pair of spaced ears projecting outwardly roinsaid plate, the lower portions of which ears are formed into a housing, a latching hook having its inner end positioned between and pivota-lly connected to said ears, a. push rod eX- tending through the tubular housing, a inember adjust-ably mounted on the inner end of said push rod, a plate depending from said `adjustable member, which plate is positioned between the upper portions ofthe ears and bears against the inner end of the latching `hook above its pivot and a spring arranged in the housing at the lower ends of the ears and bearing against the inner end of the latching hook below its pivot.

In testimony whereof we affix our signatures.

THOS. F. STUART. HENRY A. MOORE.

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