US1821835A - Push button window lock - Google Patents

Description

*sept'i, 1931.

L. c. HINDERER ET AL I PUSH BUTTON vmwow LOCK Filed Sept. 10-, 1930 2 Sheets-Sheet 1 A llomey S p 1, 19351 L.. c. HINDERER ETAYL 1 rusa BUTTON wmno'w LOCK 7 Filed Sept. 10, 1930 I 2 Sheets-Sheet '2.

In venior Wife? ffi'z'iadel'er By @Mmih v A iiorney 1 in locking position.

3 2o meat-in opposecv Patented Sept. 1, I931 r LOUIS o. remnants AND Poser Barron Application filed September This invcntionrelates generally to window locks for maintaining the window sashes FFICE exam-Essa, or KANKAKEE, ILLINOIS wrnnow LGCK locked in ventilating relation to the window 1 frame, and particularly to a lock of this type I: awhich is operated intolocking' andreleased from lookingposition by pushing the same 930. Serial No, 489,998.

said mechanism being of new and improved arrangement and design, producing a superior operation especially adapted for a device of this character. V

It is also an objectofthis invention to'provide a suitablemounting and casing associinwardly into the's'ash frameof one-of the sashes in the manner of a push button, and turning the same to securely detain the lock It is an object of this invention to provide a device of the character described "wh ch comprises new and novel features of construcatce with said mounting, forsuitably mounts mg the device 1n operating position in association'witha window structure, or upon another structure embodying two relatively sliding members, which are required to beadustably locked against relative'movement' with: respect to each other.

tion and arrangement, comprising a pair of 21: mechanically cooperating horizontally slidable ro'ds which are mounted in oneside or upon either side of the vertical portion ofthe window sash or sashes, so as to, in released position, lock thesashes against movedirections, by projecting one of said rods to contact r'eleasably the upper portion of one of the window sashes. V

t is another important object of this invention to provide mean 'n a lockof this 25 type for detaining the locking; means inlockiug' position whereby the locking meansmay not be displaced from locking position by merely pressing or pushing the said means, said means comprising; a structure associated with said locking means which is operated by turning; the locking meansto releasably engage a detent, and to disengage therefrom upon reversing the said turning.

it is also an object of thisinvention to pro- 9: vide a deviceof the character described which maybe employed for preventing opposedmo- 'tion or movement of twobodies'in superimposed orside by side sliding relation, which may be operated easily and quickly, and does 40 not in any manner interfere with the said relative sition.

It is also an object of this invention to provide a device of the character described,

movement when out of locking powhich is op rable in the same manner as a push button, either of saidpair of rods being projeetable into or out of locking position .by pressing inwardly upon either of them, and which is provided. with mechanism for autoit'is also an object of this invention to provide a device of the character described which is especially adapted to releasably retain the window sashes in a window frame in predetermined ventilating relation with the Windew frame, providing ventilating openings either at the topor at the bottom or at both the top and bottom of the window frame, and, to lock the sashes in said position, to prevent movement of the window sashes by a person on the outside of the window, and prevent such relative movement of the window sashes as would permit the sashes to be raised or lowered so as to admit an intruder. 1

c It is'also an obiect of this invention to provide a device of the character described which is simple and'easy to operate, highly satisinns, in which 0 maticallly ejecting one or other of said rods,

Figure 1 is an elevational view of a window frame showing the mounting of my improved push button look upon the sashes thereof. 4 t

Figure 2 is a side or edge view in fragment illustrating in detail the arrangement of the lock when in abutting position upon the upper end of alower window sash.

-' to limit the a )nlication of this invention to the particular modificaion set forth herein to illustrate the principle thereof, and any change or changes may be made in material and structure consistent with the spirit and scope of the invention.

Referring in detail to the drawings the numeral 5 designates generally a window frame having slidable therein the upper window sash 6, and the lower window sash 7.

Positioned upon-and mounted in one of the side members of the upper sash 6 and generally designated by the numeral 9 is illustrated our improved push button window lock, and referring to Figure 2 it will be seen that one of the rods of the lock is extended from the said sash 6 to abut the upper portion 8 of the sash 7 where an abutment plate 10 is provided for immediately contacting said rod. It thought to be obvious that it will be understood that with the rod or bolt projected to abut the upper side of the abutment plate 10 fastened on the upper end of the lower window sash 7 that relative motion in the direction of the arrows in Figure 2 will be prevented. Obviously, the ventilation spaces 11 and 12 cannot under this arrangement be enlarged by a person attempting to shift the sashes from the outside of the window, or by a person unfamiliar with the operation of the look from the inside. This arrangement, however, does not prevent the complete closing of the window whenever desired, either from the inside or from the outside of the window.

Referring to Figure 4 which is an illustration of a preferred embodiment of the principleof our invention, the numeral 13 desi nates the front or attaching plate of the ock structure, and as shown in Figure 3 it may be of any desired formation, prefen ably oval or rectangular, and provided with upper. and lower extensions accommodating holes 14 which are formed to receive screws or other attaching means for securing the plate in position on its support. A pair of apertures 15 are formed in the central portion of the plate one over the other, to reoeive the forward end of ashoulder 16., 011 the forward ends of a pair of cylindrical casings 17 and 1.8. It is understood, of course, that the casings 17 and 18 might be of any de sired transverse section such as square, hexagonal, or any other desired shape. As indicated at 15 the forward ends of the apertures designated by the same number are slightly flared, to permit swedging the ends of the shoulder 16, for maintaining the casings 17 and 18 firmly united with the plate 13.

Referring to Figure 6, the oblong plate 19 which covers the rear end if the casings 17 and 18 is illustrated in detail. The plate 19 is secured against the rear end of the tubes 17 and 18 by prongs 20 which engage in notches 21 in the plate 19 against which they are then bent and pressed, to firmly unite the said plate against the rear ends of the easings 17 and 18. A pair of bosses 22 are provided on the inner side of the plate 19., projecting from a position on the said plate which may be set to be concentric with the inner walls of the casings 17 and 18. The bosses 22 have a purpose to be described hereinafter.

Snugly slidable in the upper casing 17 is the bolt or rod 23, which is adapted to have its outer end 24 flush with the plate 13 when pushed entirely into the casing 17. An in termediate portion of the periphery of the bolt 23 is provided with a groove 25, from the rear edge of which the bolt tapers gradually at 26 to a point near the rear end of the bolt where is formed a flange 27 of the same diameter as the main portion of the bolt. A coil spring 28 is positioned at one end about the boss 22 and extends longitudinally into a cavity 29 formed in the rear end of the bolt 23, said spring adapted to normally urge said bolt into a position projecting from the easing 17. A pin 50 fixed in an intermediate position of the bolt 23 behind the groove slides on the stop 40. When the pin reaches the forward end of the stop the bolt is turned to place the pin in the offset slot 1O for securely locking the bolt against inward move ment.

Slidably and snugly fitted in the lower casing 18 is a plunger 30 whose forward part is similarly formed and positioned in retracted position to the bolt 23, and a spring 31 of the coiled variety is positioned upon the boss 22 within the casing 18, the forward end of the spring-31 being received in a recess 32 formed in the rear end of the plunger 30, which incidentally is somewhat shorter than the bolt 23. The cavity 29 is considerably longer than the recess 32. Provided in the lower walls of the casing 17 and the upper Wall of the casing 18 so that they register, are a pair of elongated openings 33 which permit a pin 34 to be projected from the casing 18 into the casing 17 and to achieve registry with the groove 25 or the tapered portion 26 of the bolt 23. The pin 34 has an enlarged end portion 35 which is slidably mounted in a vertically disposed well 36 having the retaining shoulders 37, to limit the complete projection of the pin 34. The pin 34 is normally projected through the Opening 33 by a coiled spring 38 which exerts its force against the lower side of the casing 18 and the bottom surface of the enlarged portion 35 of the said pin.

The illustration in Figure 4 shows the mechanism in whatis hereafter to be called the neutral position, such position being maintained by the projection of the pin 34 into the groove 25. Movement from this position is achieved by inward pressure upon the plunger 30 which results in disengagement of the pin 34 from the groove 25 permitting the spring 28 to project the bolt 23 into extended position. It is obvious that pressure upon the outer end 24 of the bolt 23 may result in once again registering the groove 25 upon the pin 34 and releasably locking the said bolt in neutral or retracted position.

A pin 50 is secured on the upper side of the bolt 23 and projects through the elongated slot 40 which terminates at its forward end in a right angular effect 40, so that as the bolt is ejected to locking position, a quarter turn will bring the pin into the offset position of the slot and prevent opening the lock by using a stick or other pressure means from the outside of the window as might be attempted by an intruder.

A modification of the structure illustrated in Figure 4 and just described, is set out in Figure 7. In this modification in Figure 7 the general structure ofthe plate 13, the back plate 19 and the casings 17 and 18 and the bolt 23 and the plunger 30 are substantially identi al in general formation, slight specific changes being made to accommodate the different moving parts of this modification. In this modification the bolt 23 is provided on its upper side with a projecting pin 39 near its rearward end and the pin 39 slides in an elongated slot 40, the pin 39 and the slot 40 pro- 1 viding for limitin the outward projection of the bolt 23. r The pin 39 also functions like the pin 50 in the first described modification and locks the bolt by entering the offset 40' in the forward part of the slot 40. The bolt 23 is provided with the cavity 29 carrying the spring 28 positioned by a boss 22. A deep 2 well 41 is provided leading from the lower side of the bolt 23 to a point almost to the opposite side, and within the well 41 is a coiled spring 42 downwardly urging a ball 43 which is adapted to be registered in an orifice 44 formed in the bottom side of the casing 17 in register with the open end of the well 41. This last named structure provides a releasable detent for maintaining the bolt 23 in neutral position. T he push plunger 30 in this second modification, is of approximately the same relative length as the same element in the first described modification, but the bolt in the first modification is considerably with the rear face of the plunger 30, so that said slot 46 cooperating to limit the outward y movement ofthe plunger 30 and to limit the movement inwardly when the same is pressed. Me'ansto release the bolt 23 by pressure upon the plunger 30 is constructed as follows: 1

Apairof lateral projections indicated in dotted lines in Figure 7 at 4?, are formed on the inner face of the plate 19 and they are transversely placed" in the same plane and provide for supporting the ends of a shaft 48 ed upon said shaft 48 is a trigger'49 adapted to'have one arm engaged with the rear face of the bolt 23, and have its other arm engaged upon pressure being applied on the front end of the plunger-30, the trigger 49 will transmit thesaidpressureto the bolt 23 and causethe unseating ofthe ball 43 to permit vjournaled across thespa'ce between and in each of S&1lPI'O]8CtlOnS, and centrally mountthe outward projection of the bolt 23 bythe u spring 28 to the limit of the slot 40 and retained by the pin 39. The operation and employment of our improved push button window lockis thought to be clear from the eX- planation and description already givelr above'from which it will be evident that we have provided a device of thecharacter described, which is mechanically efficient, which is easily and quickly and cheaply-installed, and is otherwise admirably suited for the purposefor which it was designed.

What isclaimed is 1 A window lock of the type described comprising a plate for mounting on a window structure, a pair of tubular casings se l cured at their front ends in apertures in said plate, and rearwardlplate closing therearward ends of said casings and support ing them in relation to each other; and a bolt closely slidable in one of said casings and adapted to position its forward end flush with the'plate, said bolt being formed centrally with a peripheral groove from which extends rearwardly a tapered portion, and a flange on the rearward end of the bolt; and a plunger sloselv slidable on the other of said tubular casings having a central vertical well, a pin and a spring forprojecting the pin from said well, said pin adapted to be projected through registering apertures in said casings to seat frictionally I in the said groove in said bolt; and a pair of bosses formed on the inner facing of said rearward plate, a coiled spring on each of said bosses and extended forwardly into recesses in the rearward ends of said bolt and said plunger for maintaining them in operative position in the casings and projecting the said bolt to a position in extension from the said one casing, and means to lock the bolt against unauthorized inward inovement.

2. A window lock ofthe type described comprising in combination, a Window frame, window sashes slidable in the frame, a means for limiting the relative movement of said sashes in said frame, comprising a plate for V mounting on a window structure, a pair of tubular casings secured at their front ends in apertures in said plate, and a rearward plate closing the rearward ends of said casings and supporting them in relation to each other; and a bolt closely slidable in one of said casings and adapted to position its forward end flush with the plate, said bolt being formed centrally with a peripheral groove from which extends rearwardly a tapered portion, and a flange on the rearward end of the bolt; and a plunger closely slidable' in the other of said tubular casings having a central Vertical well, a pin and a spring for projecting the pin from said well, said pin adapted to be projected through registering apertures in said casings to seat frictionally in the said groove in said bolt; and a pair of bosses formed on the inner facing of said rearward plate, a coiled spring on each of said bosses and extended forwardly into recesses on the rearward ends of said bolt and said plunger for maintaining, them in operative position in the casings and projecting the said bolt to a position in extension from the said one caslng.

In testimony whereof we affix our signatures.

LOUIS C. HINDERER. WVALTER F. HINDERER.

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