US534987A - Fastener for meeting-rails of sashes - Google Patents

Description

(No Model.)

J. JL ALSDORF. FASTENBR PoR MEETING RAILS 0F s AsHEs.

No. 534,987. Patented Mar. 5, 1895.

lm Il [7H/enf@ itlivrre *arent* FFQ@ FASTENER FOR MEETING-RAILS OF SASHES.

SPECIFICATION forming part Of Letters Patent NO. 534,987', dated March 5, 18915.

Application filed November l, 1894. Serial No. 527.673. (No model-l To all whom, t may concern.-

Be it known that I, JOHN J. ALSDORF, a citizen of the United States, residing at Albany,

in the county of Albany and State of New` York, have invented certain new and useful Improvements in Sash-Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention .relates to certain new and useful improvements in sash fasteners, and has for its object the production of a cheap, simple and effective device that may be used in place of the customary spring-arm fastener, and' that affords additional security against entry by burglars.

In the accompanying drawingS,Figure l is a sectional view of the meeting rails of an upper and lower window sash illustrating my improved fastener in its locking position therein. Fig. 2 is a perspective View of the fastener removed from the sash and with the operating key removed. Fig. 3 is a perspec- "tive view of the locking plate to be secured the operating key and the co-operatiug end of the bolt.

Similar letters of reference indicate similar parts in the several views.

Referring to the drawings, A indicates the lower rail of the upper sash of a window, and B the upper rail of the lower sash thereof. A recess his cut in the rail A and a locking plate D provided with an opening t is countersunk 4in the rail and secured by means of screws or the like so as to form a metallic guard for the recess h. The rail A is thus provided with a substantial and effective means for engaging with the spring bolt or stem of the fastener proper, now to be described.

The rail B is bored out, as indicated, for the reception of the barrel or case a of the fastener said case having an outer square ange a fitting into a corresponding countersunk portion of the rail and having holes for the' screws wherebyit is secured in place.

Within the case a, iits snugly the sliding bolt b having a cross-head b at one end, and having an external screw thread at the other ofthe spring may be increased or diminished and it may b e thus adjusted by inserting the Apin projections of an appropriate vwrench within the receiving holes d. The bolt b is furthermore provided at its end with a recess having a screw threaded Wall, into which engages the screw threaded end of the operating key c. The projection c on the end of the key may also serve as a means for operating the nut d, if desired, as it is made of a size sufficient to fit one of the holes d.

In the form shown in Fig. 4, the recess in the end of the bolt, instead of being screwthreaded, is made square or angular in cross section, and the end-of the operating key or handle is of corresponding cross section.

A pin f is screwed into the bolt b and moves in avslot g which is made in the case a, said slot having a forward prolongation g' for a purpose to be hereinafter described.

In Fig. 1, the fastener is shown in the locked position. To unlock it, the button cis turned toward the left thereby rotating the bolt b correspondingly until the pin f reaches the lower horizontal portion of the slot g. At this moment the bolt head b registers with the opening t', and the spring ,e draws said bolt head out of the opening and into therecess K of the case ct. The fastener is thereby unlocked, and the sashes may be respectively' raised or lowered. During this unlocking operation, the pin f has been drawn-back to the end of thelower horizontal portion of the slot g. To again lock the fastener, after the meeting rails of the sashes have been brought together, it is therefore necessary to press the bolt inwardly by means of the button c until the pin fstrikes the vertical portion of the slot g. At the same time the bolt head b enters the openingt'of the locking plate. The button c is then turned to the right thereby bringing the bolt head transverse to the openingz'and locking the sashes together, as fully illustrated in Fig. l.

As a safe-guard against the unlocking of the fastener by burglars, even though a Window pane be broken, the key c may now be entirely removed from the recess of the bolt. In order to do this, in the arrangement shown in Fig. l the bolt is pressed forward stillfarther until the pinf enters the slot g-, whereupon the key c may be unscrewed while the bolt is thus prevented from turning. The key being removed, the spring e draws the bolt head back again into iirm contact with the inner surface of the plate D, holding it in the locked position against disengagement by jarring, and until released by re-inserting the key and unlocking the fastener. The eX- tension g is, of course, not required in the arrangement shown in Fig. 4, as the operating key can be withdrawn from the recess without turning the bolt.

If the case a were inserted at either end of the rail B, it is evident that locking plates having openings could be inserted at various intervals in the side rail of the sash A, and the window thereby locked in any position while allowing for ventilation.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. Afastener for window sashes and the like, consisting ot` a barrel or casing adapted to tit a recess in the inner rail and be secured to the rail, a sliding bolt mounted in said barrel, an open-ended recessin the barrel, ahead detachably secured to the inner end of the bolt and playing in said recess, a spring encircling the bolt and reacting between its head and the bottom of the recess, and a desenesi? tachable handle or key for operating the bolt; substantially as described.

2. A fastener for window saslies and the like, consisting of a barrel or casing adapted to it a recess in the innerrail and be secured to the rail, a sliding and turning bolt mounted in said barrel, a nut screwing on the inner end of the bolt, a spring encircling the bolt and acting to keep its outer end withdrawn within the barrel, a right-angular slot in the barrel, a pin on the bolt playing in said slot, means for adjusting the nut on the bolt to vary the tension of the spring, and a detachable handle or key for operating the bolt; substantially as described.

3. A fastener for window sashes and the like, consisting of a barrel or casing adapted to tit a recess in the inner rail and be secured to the rail, a sliding and turning bolt mounted in said barrel, a head on the inner end of the bolt, a spring encircling said bolt and acting to keep its outer end Withdrawn Within the barrel, a slot in said barrel having longitudinal and transverse portions, a pin on the bolt playing in said slot, a screw-threaded recess in the inner end of the bolt, a forward prolongation g of the transverse portion of the slot in the barrel, and a detachable handle or key for operating the bolt havinga threaded end adapted to be screwed into the said threaded recess; substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN J. ALSDORF.

Witnesses: v

E. S. PRATT, C. H. THORNTON.

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