US1660515A - Latch - Google Patents

Description

Feb 28, 1928.

C. M AXON LATCH Filed Aug. 20. 1926 CURT/S MAXUN A TTORNE Y.

Patented Feb. 28, 1928.

N-ITED-ISTATES PATE T FFECE.

CURTIS MAXON, or snw'rntnn, CALIFORNIA.

LATCH.

Application filed August 20, 1326. Serial No. 130,412.

This invention relates to latches of the type controlled by a push button'movable perpendicularly to a' supporting surface through a knob mounted on the surface; and

it is the object of the invention to provide a simplified and practical mounting for the control mechanism which eliminates the use The operating control is particularly adapted for use in connection with the bolt mechanism of a latch such as shown in my U. S. Patent No. 1,571,453, of Feb. 2, 1926; and it is a still further object of the invention to simplify the operating mechanism ofmy said prior patent and adapt it for con- Venient manufacture at minimum expense. The invention will be readily understood from the following description of the accompanying drawings, in which: I i

Fig. 1 is a horizontal section through the latch mounted on a cupboard door. I i

Fig. 2 is a side elevation of the latch operating means with the parts disassembled.

Figs. 3 and i are transverse sections on the lines 3-3 and H of Fig. 1. Fig. 5 is a fragmentary front elevation of a cupboard door, with the mounted thereon. The'latch operating mechanism forming the subject matter of the present invention is illustrated as mounted in a bore 1 extending through a cupboard door2 which seats in a frame 8, the operating means con-'v 0 trolling a bolt mechanism for the latch which is mounted on the innersurface of the door with the bolt preferably adapted for sliding movement parallel tothe surface of the door so as to project and retract the bolt relative to a cooperating catch amounted on frame 8.

A casing 5 for the bolt mechanism has an opening in its base overlying the inner end of bore 1, and a bolt 6 slidable in the casing is normally projected for engaging catch 1 by means of a spring 7. The means for retracting the bolt against the tension of its spring so as to disengage catch 4, comprises an improved latch I arm 8 projecting transversely from the bolt in casingb, and extending. through the openmg in the base of the easing into the bore 1. The arm 8 is engaged by an operating rod 9 of the control mechanism for the latch, said 1 operating rod beingadapted for'axial movement in bore 1 in alinement with arm 8, with the-cooperating ends 10 of the arm and rod inclined relative to the direction'of movement of both the rod 9 and bolt 6 as shown in Fig. 1, so that whenthe rod is pushed inwardly the arm 8 is shiftedlat grzlilly relative to the rod for retracting the o t. y 'The control mechanism for the latch, of which the rod 9 is the actuating means, overlies the outer end of bore 1, and comprises a knob 12 for manually swinging door 2- and a push button 13 slidable in the bore 14 of the knob for shifting rod 9 soas to retract bolt 6. v mounted on door 2 without the use of fastening screws or the like, so that the elimi nation of openings through the knob for such fastening means permits the knob beinginex pensively constructed of glass or other frangiblematerial; and the mounting for The knob and push button are the knob and push botton' also provides for ready adjustment to secure the parts in place and adapt the rod'9 for engaging arm' 8, irrespective of variations in the thickness of door 2. As an instance of thisarrangement, a barrel 15 is adapted for projection through the bore of knob. 12, with an exterior peripheral flange 16 at theouter end, v

of the barreladapted for abutment against the outer end .of the knob for limiting inward movement of the barrel. I An interior peripheral flange 17 is also provided'at the outer end of barrel 15, and the push button 13 is insertable through the inner end of the barrel with an enlarged base 18 of the push button adapted for abutment against the. flange 17 to limit outward movement of the push button when'its head projects beyond knob 12 just sufficiently to permit it being pushed inwardly by the finger.

The push button is adapted to be moved inwardly relative to barrel 15 and knob 12,

but is'preferably held against rotation by a key 19: stamped in the surface of-the barrel- The barrel 15 is of a length to project beyond the inner end of knob 12 into the bore 1 with the flanged innerendof the knob abutting against the door 2, and the operat ing.rod,9extends into barrel 15 through washer 22 and the coil spring 21, with the inner end of the rod threaded into push button 13 as shownat23.

The knob assembly as thus described is heldin place on the door. by means of a sleeve 25 insertable in the inner endof bore 1 before the casing 5 is mountedlin place, the sleeve having a flanged end 26 adapted to engagethe inner end of bore 1, Withthe opposite end-2710f the sleeve adapted for threaded engagement on the threaded inner,

end28 of barrel=15,so as toclamp the knob 12 between flange 16 and the outer surface ofdoor 2 and also securethe barrel 15 and its associated parts. i

The inner end 28- of barrel 15 is prefer.-

ably threaded for an appreciablelength, and

the, inner end ofthebore of knob 12 is prefably countersunk asshown at 30 to adapt it forthe reception t the inner end of sleeve 25,so that the sleevemay be tightened up on the barrel as far as necessaryto clamp the mechanism onmloors of, diil'erent thick ness.

sleeve is preferably notched as shown at 31,

and a tooli35= shown in Fig. 2, is provided with bins 32-ada11ted -for rec p tingle-eve 25Qiw-ith shoulders 33 i of the pins engagingthe notches, so thatrtheltool is adapted to,

rotate.- the sleeveandiis held against lateral displacement. WVhen-the operating mechanism is assembled, and before a casing 15 1 is mounted in place, it is also necessaryto adjust rod Qrelativeto push button 13 so that,

the cooperating surfaces 10 will beiin operatiye relation and for this purpose the op posite end of tool 35 is notched as shown at;

34 to correspond to the end of rodc9, so that thetool may beused for turning the rodto provide the desired longitudinal and rotatable/ adjustment.

I claim:

1. A- Iatch' comprising a bolt, a support having an opening. therethrough, l a barrel extending into .one end iofsard open1ng,an operating rod movable m said barrel, cooperatingabutments on the bQltandlrod forshifting theebolt byi movement of the rod, and a sleeveextendinginto-theopposite end 7 Inorder. to screwthe sleeve 25 onto the barrel 15, the flanged, outer end26s-of the of said opening and engaging the barrel for fixing the same relative to the support.

2, A device ot the character described adapted forv mounting on a; support having an openingtherethrough, comprising abarrel extending into one end of said'opening and having abutmentlmeans at its outer end, an operating rod movable in said barrel, a

knob on the barrel between said abutment means and the surface of the support, and a sleeve extending into'the opposite end of said opening and engaging the barrel for fixingjthe sleeve andknob relative to the support. a

BrA device of the, character described;

adapted for mounting ona jmovable support 1 having an opening therethrough, comprising a barrelfextendlng nto one end ofthe open1ng,. me'ans for latching j the support, an

operating rod. for the latching means movable 1n saldbarrel, and fa sleeve extendrng into the opposite end of' said} opening and engaging the barrel for: fixing the same relativerto th'e support,the outer end ofthe sleeve and the adj acent end of the operating rod being adaptedffor engagement by a key for rotatabjly adjusting said parts relative to the barrel. t

LA device of thencharaeter described adapted formount-ing on a movable support having an opening therethrough, comprising; a barrel extending into one end ofsaid openi ing and having abutment means at its outer end, a push button slidable in theflbarreland having a shoulder engaging said abutment means for limiting the projection of the push button beyond the jouter end of the barrel,means for latchingthe support, an

operating .rod for the latching means fixed to said "push button anjd projecting beyond the inner] end [of the barrel, spring means tending tog reti act'the operating rod and project the push button beyond the outer endjofv the barrel, and a" sleeve extending into the opposite end of said opening-and engag ng the arrelafor fixin'g thesamerelative to thelsupporti 5. A device of 1 having Opening. a e h bugh; pris ing a barrel extendingjinto one, end ot the opening, a push button adapted for anial movement )in fsaid 'barrel but held against rotation therein means for latching thesup-f port, an operating rod for the latchinghe character describedz' adaptedr0 mount ng on a movable support;

means fixed to thepush button"gandprojech ing beyond the inner end of the barrel; and a sleeve extending into the opposite ,end; of'

said openirignnd engaging the barrel "for fixing the same relative to the support. I

In testimony wliereofhe has afiixedh-i's signature, to this specification. r

' IS' MAXON;

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