US1937548A - Sash lock - Google Patents

Description

Dec. 5, 1933. CHAMBERS 1,937,548

SASH LOCK Filed May 3, 1932 INVENTOIE:

7 X BY I M" ATTORNEY.

Patented Dec. 5 1933 UNITED STATES PAT NT OFFIECETTL 1 sAsH LOCK new Chambers, St. L u s, Mo. Application May 3, 1932. Serial No. 608,927 4. chime- (cl-229 43 2) This invention relates to window locks, and,- more particularly to the class of lock adapted to be carried by one of the side rails of a sliding sash.

My invention has for itsobject', the provision of a sash lock wherein one member'thereof is suitably fixed to the sash made of material of a resilient character, and the other member thereof readily put in place or positioned between said fixed member and one of "the rails of a'sash to prevent a lower sash from being raised above a certain height, or the upper sash being lowered beyond a predetermined distance.

A further object of the invention is the provision of a sash lock embodying a resilient strap member and av wedge member, which 'when the wedge member thereof is removed, the resilient strap member thereof will assume an, approximately flat position against the sash rail to which it is secured, thereby permitting the lower sash to be raised its full distance or the u'ppersash being lowered its full distance without interference of said strap member V I A still further object of theinvention isthe provision of a sash lock which possesses advantages in points of simplicity and efficiency, and, at the same time proves itself comparativelyin expensive in cost of manufacture.

With the above and other objects in view, the

invention consists in thenovel features of construction, arrangement and combination of parts hereinafter more fully described and finally point ed out in the claims hereto appended.

Referring to the acom-panying drawing forming a part of this specification, wherein like characters of reference denote similar parts throughout the several viewsz Fig. 1 is a fragmentary front elevation of a window with-a lock embodying features of my invention applied to a sash.

Fig. 2 is a transverse sectional view partly broken away, showing the lock in position between the upper rail of the lower sash and'one of the side railsof the upper sash.

Fig. 3 is a perspective view of the wedge member. I

Fig. 4 is a fragmentary sectional view showing the relative positions of the hooked end of the resilient strap member and the vapertured head band of the wedge member, when removing the hooked end of the strap'member from the aperture of thewwedge head band.

Fig. 5 isa modified form of wedge member-t Referring to :the drawing, the reference character 1 designates a windowframe zthe upper should persons unauthorized to] open the window for instance, as robbers.

sash, 3 the lower sash and 4 the parti bead, all of which are of usual construction in window construction where the two sashes areslidable relative to each other. 'f

In carrying out the aim of my present .invention, I employ a normally fiat i'strap-member 5 made of suitable resilient material" capable of having avver'y smooth surface, such for' instance, as spring brass, or the like. H

The resilient straplmember"5issecuredat its lower end to onefofthe side railsof the upper sash 2 by means or suitable fasteningTdevices, such for instancaas suitable screws 6.. QThe up- 1 per end of the resilient strap 'member :hasfits upper end portion folded rearwardly and qowiiwardly, as at '7 and slightly curved outwardlyto provide a convexed bearing surface 8and'to'se'rye as a hook. The strap member 5'being of resilient material, it .is evident,. thathit normallyl liesin a flat, or approximately flat-positiomrelative to the said' rail with the conveiredlbearing surfaces thereof in contact with the sash m1; to which it is secured so that the twosashes 2Iand can be moved relative .toneachi other the'fullidi'stance f of I their sliding" moye'me'nt without? interfering with the strapjnember, or the hook. ape'dhead th re f; j i

V The reference'character- 9 'designates a suitable wedge member, which is substantially. triangular in shape,,having ;the back face 10. and fr'ont face 11 meetingatea relatiyely sharp edgef12. r Securedto the.butti orvupper.endofthe wedge member is a suitable" U-TshapedQmetalIic'head. band 13.' The open. side of this band is to thf back side of the wedgev member Sand -the-side members of the v wedge head: band their u er d s upwa dly our-yeti 9 water d, as;

at 14 so that jimmy devices wil-lreadily slide off of the same whencoming into contact therewith,

from the outsideattempt toiimmy thelock, such;

.. l he-front wall portion'of the'rUe'sha'pedheadj .band -13 iSxCUIYQd at its upper edge, as at 15," I

and the wall is providedwit'h'a transverse slotted opening -l6, which isof .a' width .equal' to the width of the strap hook formed-at the Upper endof the resilientflstrap =member. 5 and .of a height at least equal to the length of the-folder 5 lip Jthereof, so that the fold is r,eadily passable through the head band opening lfiwvvhen the wedge member 9 is applied to the sash :rail by sliding itzdownwardlyubehind' the resilient strap member 5.

' chance of the wedge being moved upwardly be-' When the wedge member 9 is being positioned behind the resilientstrap member 5, the feathered edge 12 of the Wedge member 9 is forced between the convexed bearing surface 8 of the hook fold 7 of the strap 5, and asthe wedge 9 is lowered, it forces the free portion of the strap member to assume an inclined position from the fastening devices 6 to the hooked end thereof and to serve as a smooth facing for the inclined plane of the wedge member against which one corner edge the upper rail of the lower sash 3rides against until the wedge effect is established. M

The-strap member serving as a facing for,

the wedge member 9, prevents any wear on the front face of the wedgemember and being smooth of surface, the upper rail of the lower sash slides easily on it, thereby. preventing any possible tween the sash rail and the strap member 5, as

sliding pressure is being exerted upon the front face of the strap member by the upper rail of the lower sash. V I'have shownth'e head band 13 of thejwedge member, as provided with a latch plate 17 which is pivoted tothe backface of the front wall of the head band, soas to normally assume aha'ng- .ing or suspended position. The lower end of the latch plate extends'pastthe slotted opening 16 and rests on top of thehook shaped upper end of the strap member after the hook shaped upper end of the strap member 5 has passed throughthe opening lfifor locking engagement with the headband. Thelatch member 17 is held in a horizontal position, as shown in'dotted lines in Fig. 3, when the wedge member 9. is forced into position between thestrap' member and the sash rail; When the opening'16 regisiters with the hook shaped upper end of the strap 9 is pushed down s'lightlyptof cause the hook.

5 the hookshaped upper end'of the strap enters the opening 16 and'after'this has occurred, the wedge is pulled upa little sothat the hook'fold 7 will engage the lower edge of the opening 16. After this, the latch can be moved into a perpendicular position to prevent any possible upward movement of the wedge block 9.

Whe'nitis desired to remove the-wedge block 'from'fbehind' the"s'trap'member, the latch is moved to a horizontal position, ,the wedge block shaped end of the strapmember 5 to register with the opening lfi'a'nd finger pressure is applied from behind the hook shaped, end of the strap member 5 toforce it forwardly throug'hf'the open ing'lfi so that the wedge member can beexgtracted upwardly, or 'from'one side from between the 'sash rail and theresilient strap member '5. When'the wedge has been removed, the resilient strapmember 5 assumes the position shown in.

dotted lines in Fig. 2, a

The'wedgefl-block 9 can 'be positioned betweenv the sash rail'and the resilient strap member 5 ina reversed position to thatshown in Figs. 1

and 2, if so desired,'but in such instance, the edge ofthe hook shaped upper end of-the'resil- 5 'ient strap member'will merely'rest upon the butt end of the wedge memberand it; could be easily forced out of contact with the wedgeby means of'a'jimmy device, therebypermitting'the wedge to be raised out of its locked position. However,

should the wedge 'be positioned in'this reverse position,.thewedging effect would be the same as thatshown in Fig. 2. 1' i The modifications of the wedge member designated ,9-,.in Fig.5 is the same .as the upper'portion 13 of-the wedge member shown inFig. .3, ex-

suitable fastening devices. of wedge memberworks equally aswell .asthe faces, wherein the block has but a single sash engaging surface. The modified form of wedge member can be stamped and formed from a single piece of sheet metal, whereas the wedge member shown in Fig. 3 is formed from two members, one of which is the metallic head band andthe otherthe wooden wedge block, which must be secured to the head band by means of The modified form Wedge member shown in Fig. 3. j,

' From the foregong description;fiitis evident that I provide a sashlock, which. is easilyap plied, highly efficient for. the, purpose .desig'ned, 5.100

and a device which will not marthe windowiand which will not be unsightly. I

The many advantages of the herein described invention will f readilyv suggest, "themselvesf-to those skilled in the artffto which it .appertains.

From the foregoing description, it is evident that a simple d'evicefor this purpose has'been disclosed, but it is to be understood that I do not desire tofrestrict, or"limit myself to the very details of thelconstruction shown andlde scribed, which is merely illustrative, -it.being obvious that changes, notinvolving th'eekercise of invention, may be made without conflicting jor departing from thespirit of the invention within the scope of theappendedclaims.

What I claimfis:- U f i 1. A sash lockjincluding a resilient'strap member secured at its lower end tojone of the side rails of a window sash, .a hook formed at :the 3 upper end offisaid resilient st'rap member, a 1. 20 wedge memberja metallic'ext'ension atthe butt end of said wedge member, said extension having a transverse.slottedi opening throughwhich said hook shaped upper end of the resilient strap c'anpass for engagementwith the lower 12.5

edge of the opening when the we dge'member, is

positioned between the resilient strap" member. and the rail of the window sash to whichJthe strap member is secured. i 2 A. sash lock comprising,a resilient metallic strap member, meansfor securing the lower end of said member to one ofthe side rails of'an upper sash, a wedge member adapted to be positioned. between I said rail of the sash and 3 said resilient strap member by, sliding the same downwardly relative to the. strap. member for flexing the strap member to serve as-a facing for thewedgemember and ahook andslotcom. nection to preventseparation of the wedge and strap members whens0 positioned. I 1

3. In combination with a window having a pair of. relatively slidable window sashes motmted in a frame, aresilient strap member having a hook shaped, upper end,- fastening meansforsecuring-the lower end of the strap member to one of thesiderails of an, upper sash: and a wedge member'having a transverse opening-to receive the hookedend of the resilient strap. member for hooked. engagementwith the l'oWer-iedge of the: wedge opening: :1 .i

the uppermost sliding window sash, a wedge member adapted to be removably positioned behind the spring so .that the spring will serve as a facing for the outer face of the wedge member and means to prevent removal of the wedge member from behind thespring without first j flexing the spring away' from the spring engaging face of the wedge member. I

, HENRY L.

Images