US1685508A - Push catch for doors - Google Patents

Description

sept. 25, 192s. 1,685,508

Patented Sept. 25, 1928.

UNITED STATES PATENT oFF-ICE.

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

PUSH CATCH FOR DOORS.

Application filed March 30, 1927. Serial No. 179,418.

Our invention relates to a Vpush catchor doors, hinged panels, windows and the like, and has for its principal objects the provision of a relatively simple, practical and i easily installed .latching device that automatically ymoves into latching position when the door or panel to which it is applied is closed and which latching device is released by the actuation of a push rod; toY provide a latching device of the character referred to that may be advantageously used on single or double doors, either plain or rabbeted; and further, to provide a latch that may be applied to a door or the like so as to engage or catch eitherbeneath or on top of'a shelf behind the door or against the jamb or frame that surrounds the door or swinging structure.

.Further objects? of our invention are to provide a doorrlatching device' that may be readily adjustablein order that it may be easily and quickly installed on doors of different thicknesses; further, to provide a latch ofthe character referred to that may receive plain or ornamental knobs of wood, glass, metal, porcelain, or the like; and further,to provide alatch that requires the boring of only one small holeI through the door or 'other 'ging member to which swin the latch is applied. l

With the foregoing and other objects in view, our invention consists in` certain novel featuresV of construction and arrangement of parts that will hereinafter be vmore fully described and claimed and illustrated in the accompanying drawing, inpwhichig. 1 Iis an elevational view looking'` against the inner face of a dooror swinging panel and showing our improved latch in position for use.

ig. 2 is a lvertical sectiontaken on the line 2 2 of Fig. 1.

Fig. 3 is an enlarged horizontal section' taken on the line 3 3 of Fig. 1.' l

Fig. 4 is an enlarged cross section taken on the line 4`4'o'f Fig. l.v Y Figo is a horizontal section taken on the line 5-.5 ofFig. 4. v

Fig. 6 isa horizontal line 646 of Fig.'5. v l Fig, 7 is a perspective view of the spring pressed bolt that forms a part Of .Our i111- proved latch.

section taken on the Y Fig. 8 is a perspective view of a member thatis carried by the push'rod of the latch and which is utilized for shifting the latching bolt actuating lever. n

Referring by numerals to the accompany-- ing drawings,` whichy illustrate .a practical embodiment of our invention, 10 designates a box like housing that is preferably stamped or pressed from suitable sheet metal and the top of said housing being closed by a removable plate 11. n' Formed integral with and projecting outwardly from the rear wall of housing 10, is a tubular stem 12l that is externally threaded in order to receive the internally threaded inner end portion 13 of a knob supporting tube 14 and which latter is rovided atits outer end with a, flange 15.

` en the latch housing is applied to ai door or swinging structure, such as D, the latter is provided with an aperture 16 that receives the threaded stem 12 and the inner portion of knob lsu porting member 14.

A knob K of g ass,.porcelain, wood, or metal, is carried by tubular member 15 and,

'when the latter is screwed onto Athe tubular stem 12, said knob is firmly clamped between flange 15 and the outer face of door D. Inasmuch as tubular member 14 may be screwed inwardly or outwardly upon stem 12, knobsof diiferent lengths may be acn commodated by said tubular member.

Extending through tubular member 14 and stem 12 isa push rod 17 provided on its outer end with a head or disk 18 and the inner end portion of said pushrod, or that portion that passes through vhousing `10, is threaded as designated byl 19. f The front wall of housing 10 is provided with an aperture 2O for the accommodation of the inner. end of the push f YYArranged for longitudinal sliding movement within housing 10, is a latching b olt comprising a straight body portion 21, with one end of which; isformed integral a block 22 having a beveled outer face 23. This block 23V is arranged to slidefreely through a rectangular opening-24 that is formed in one of the end walls of housinglO. When block 23 is in its normal position, that 1s, projecting from housing 10, and the door to which the latch is applied is closed, said block engages behind a keeper or latch plat-e posed inner edge 27 and said plate 26 occu-,

pies a plane just below that occupied by the body of the bolt. Plate 26 andthe end of the bolt to which it is connected are arranged to slide'V freely through an opening 2S that isforined iii the corresponding end of housing 10.

Formed integral with the intermediate portion of bolt 21, is the lower portion of an L-shaped the upper end thereof' toward the end of i housing' 10 above opening 28.

the housing that is provided with the opening 28, is a-finger 30. Mounted on this finger, is one end of an expansive coil spring 31, the opposite end of which is supported by a pin 32 that projects from the end of Under the n influence of this Vspring 31, the latcliing bolt A angularly disposed edge 27 of plate 26,

is norinally'held within thehousing so thatv block 22 projects through opening 2a and beyond the corresponding end off the housing.

Seated in the bottoni of housing 10 is a pin- 33 and fulcrum'ed thereon isa short lever 34:,Yone -end of which bears against the and the opposite end of Vsaid lever terminates receives the threaded Vportion 19 of ata point below that portion of push rod 17 that passes through housing 10.. Thev lower horizontally disposed portion of arm V29 overlies the intermediate portion Vof the lever 34 and thus the latteris always retained in proper position upon the bottom of the housing 10." l Y The vertical webof a. C-shaped plate 35 is provided with a threaded aperture 36'that rod and depending from the Vlower horizontalarm lof said C-shaped plate, is a lip 37, against which the corresponding end of lever 34: engages. Formed in the upper horizontally disposed Vportion of plate :35, is a threaded aperture 38 vthat receives a set screw 39 and which latter, when tightened,

bears against the threaded" portion of theV pushrod and locks plate 35in its adjusted position thereupon. vThe upper portion of `the'qloclring screw 39 projects through a transversely disposed slot '40 that is formed in top p late 11. j

:Housing 10 may be secured to the inner face` of a door or swinging structure in any suitable 'mannen preferably by .means of screws 10L that pass through perforated ears -1,0"that project from the walls of said housing. A y When a. door equipped withour Vimproved latch is closed,"the pressure of spring 31 rearm 29 and projecting fromthe push 21 at its limit of movement in one direction within housing 10 and with block 22 projecting from said housing and positioned behind the catch plate 25, as illustrated in Figs. 1 and 3; Y

To release the catch and open the door, knob K isv engaged Y and pressure of the thumb or finger is applied to head 18 of push rodf17 vAs the push rod is moved inward, the depending lip 37 on member 35 pushes outwardly against one end of lever 34, thereby swinging said lever on its fulcrum 33 and, as aresult, the opposite end of said lever bears against thev inclined edge tains bolt 27 of plate 26, consequently moving bolt 21 lengthwise through the housing 10 against the resistancel offered by spring 31. As bolt 21 is thus moved,`bl oclrl 22 is drawn into the housing 10 until the outer endof said block clears the end of catch plate 25 and the door may now be opened.

As soon as thepressure on head 18 lis yrelieved, spring 31 will act to restore the actuating parts of the latch to their normal positions, as illustrated in Fig. 3, and when the door is again closed, the beveled face 23 on block 22 will strike againstV the latch plate 25, thus moving the locking bolt lengthwise through the housing 10 until the end of block 22 passes the latching' plate,- whereupon tlie pressure of spring 31 will move said bolt so that the blocky 22 is re-engaged behind the latcliing plate. Y g

The latching boltv 21 is retained in proper position within the housing and is prevented from tilting or ca-nting by the block 22 and plate 26, which occupy Vand move through apertures in the end walls yof the housing andlever 34 is retained in proper operative position, due to the fact that it occupies a position beneath'y the latching bolt 21 and the lower portionof the L-shaped arm 29.

Thus it will be seen that we ,have provided a push catch'for doorsthat is relatively* simple in construction,inexpensive Vof manufacture, capable of being easily and quickly assembled and applied for use and which isV very effective in" performing the functions for which it is intended.

It will be 4understood'that minor changes in the size, form and construction of the various parts of our improved push catch for doors may be made and substituted for those herein shown and described'without departing froml the spirit of our invention, the scope of which is set forth in the appended claims.

We claim as our invention;V

:1.A push catch for 'doors-y comprising a housing, a spring held latching bolt arranged for sliding movement; therethrough, the outer end portion of which latchingbolt projects through an opening'fin one end of said housing, the inner end portion of said clined face, a lever fulcrumed within vthe housing with one end bearing against said inclined face, a push rod mounted for movement through the housing in a plane at right angles to the plane occupied by the latching bolt and a member adjustably mounted on said push rod and bearing on the end of said lever opposite the end that engages the inclined face on the latching bolt.

2. In a push catch for doors, a housing, a latching bolt arranged for sliding movement lengthwise within said housing, one end of which latching bolt normally projects from said housing, the opposite end of said latching bolt having an inclined face, a lever fulcrumed within the housing with one end normally bearing on the inclined face of the latching bolt, a push rod mounted to move through the housing at right angles to the plane occupied by said latching bolt, a member adjustably mounted on said push rod within said housing for engaging said lever when said push rod is actuated and mea-ns for locking said last mentioned member vin its adjusted position on said push rod.

3. In a push catch for doors, a housing adapted to be positioned on the of a door, a spring held latching bolt arranged to slide lengthwise through said housing and provided 0n its inner end with an inclined face, a latching bolt aetuating lever fulcrumed within said housing, one end of which lever bears on the inclined face of said latching bolt, a bracket on said bolt, a spring arranged between said bracket and .the housing for yieldingly resisting inward movement of said bolt, a push rod arranged for operation in a plane at right angles to said housing and the latching bolt therein, which push rod passes through said housing and a member carried by said push rod for engaging said latching bolt actuating lever.

In testimony whereof we aiix our signatures.

THOMAS F. STUART. HENRY A. MOORE.

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