US1336430A - Window-sash attachment - Google Patents

Description

G. H. GU STAF SON. WINDOW SASH AITACHMENT.

APPLICATION FILED APR. I91'19l7.

1,33 ,430, Patented Apr. 13, 1920.

GEORGE E. GUSTAFSON, 0F J'OLIET, ILLINOIS.

WINDOW-SASH ATTACHMENT.

Specification of Letters Patent.

Patented Apr. 13, 1920.

Application filed April 19, 1917. Serial No. 163,162.

To all whom it may concern;

Be it known that I, GEoneE H. GUSTAFSON, a citizen of the United States, residing at Joliet, in the county of Will and State of Illinois, have invented certain new and useful Improvements in Window-Sash Attachments, of which the following is a specification.

My invention relates to window sash attachments, and is a burglar-proof window sash stay lock, and the object of my invention is to prevent the upper and lower sashes from lapping beyond a certain point, and thus render it practically impossible for burglars to gain entrance to the building by any manipulation of the sashes, my device being in such position that it cannot be reached by burglar tools from the outside.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure l is a front view; and Fig. 2 is a side-edge view.

The main piece 1 is fastened to the inner edge of a side piece of a window sash 7, just far enough from the bottom to allow the upper sash to be lowered slightly for purposes of ventilation. Said main-piece is cut away in the center of one of its sides, and the upper and lower projections are turned and form the tubes 99. The stay-plate 2, also, is turned and forms the tube 10. A slot is cut into the upper tube 9 at its bottom, and into tube 10 at its top, thus forming the shoulders 8, and 8, which engage each other when the device is in a locked position. The bolt 3 is slidable in all of said tubes, and has its upper end kept in projection by means of the spiral spring 4 coiled thereon between the cap of bolt 3 and the upper end of the tube 9. By pressing down on the cap of bolt 3, and thus overcoming the resistance of spring 4, the shoulders of tubes 9 and 10 are moved out of engagement, and stay-plate 2 can be lapped back over the main-piece 1, and the device thus unlocked, said'bolt 3 beingprovided with a flange 11 to prevent plate 2 from sliding below a certain point on said bolt. The lower end of said bolt 3 is threaded and the nut 5 screwed thereon. As shown in Fig. 1, the device can not be unlocked until the nut 5 is screwed upward to a certain distance. The spring 4 holds tubes 9 and 10 in engagement, when stay-plate 2 is turned back into locked position.

IVhat I claim is- 1. A window sash attachment, comprising, a metal plate fastened to the inner edge of a side piece of an upper sash of a window and inside of the window pane, one side of said plate being cut away in the center leaving projections above and below; an upper and lower tube, each formed by turning said projections inward on said plate, the upper of said tubes having a shoulder at its lower end; a metal stay-plate, turned on one of its sides and forming an integral tube, said tube having a shoulder on its upper end to engage the shoulder of said upper tube; a bolt with a capped end movable through all of said tubes; a retracting spiral spring coiled on the projecting end of said bolt; a flange on said bolt below the middle one of said tubes; a nut adapted to be screwed over the threaded end of said bolt; and means for fastening the device to a window sash, whereby said attachment can be held in locked position.

2. A safety ventilating window-sash lock, comprising a hinge, one leaf of which is fastened to the window sash and the other used as a stay; a hinge-bolt; a spring coiled on the end of the hingebolt and adapted to hold the device in locked or staying position, yet under pressure, permitting said stay to be moved out of locked position; a nut screwable on the threaded end of said hingebolt and adapted to hold said stay in an immovable locked position and means for holding said device in a locked position.

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

GEORGE H. GUSTAFSON.

Witnesses:

S. A. GooDsPnED, M. A. Goonsrnsn.

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