ARRETE-CROISEE

WINDOW FASTENER

Revendications

Claim 1st The combination of the box H having a slot formed therein, the spindle I, the notched quadrant K, the bar L carrying a catch and a pin which enters a slot formed in said quadrant, and having a guide for the enlarged head of the pin 0 which is actuated by the movement of said quadrant, and the spring N which has bear¬ings on said pin and the slotted end of the bearing piece p, substantially as specified. 2nd The combination of the box H, the spindle I carrying a thumb-piece, the notched quadrant K, the bar L and the bar M pivotally connected with the said quadrant and adapted to move the catches a and b in opposite directions when actuated by said quadrant in slots formed in said box H, and provided with guides for the head of the pin 0 which is so formed as to enter the notches in said quadrant as it is caused to rotate, and the spring N having suitable bearings, and adapted to keep the head of the pin pressed into the notches on the quadrant, substantially as described and for the purpose specified. 3rd In combination with a window frame and sash, a box let into the side of the window frame, and provided with mechanisnm adapted to move in a slot formed in said box, a catch which is fitted to engage in suitable bearings, provided by a stop-groove formed in the window-sash, substantially as described and specified. 4th In combination with a window-sash, a stop-groove F rigidly attached to said sash in a recess made therein at one of the corners, and having a slot 3 so formed as to admit of a catch b engaging therein when actuated by mechanism let into the side of the window-frame and locking the sash substantially as specified. 5th In combination with a window-sash, a stop-groove F rigidly attached to said sash in a recess made therein, and having a slot 3 and groove 7 so formed as to admit of a catch b passing into the box H with mechanism adapted to operate the catches a and b, and the stop-grooves E and F which afford suitable bearings for the catches a and b so as to lock in position the sashes B and C, substantially as described and specified. 7th The box H let into a window-frame, the spindle I, notched quadrant K, the bar L and the bar M pivotally connected with said quadrant and adapted to move the catches a and b in opposite directions when actuated by said quadrant, and provided with guides for the head of the pin 0 which is so formed as to enter the notches in said quadrant as it is raised to ro¬tate, and is held therein by the action of the spring N, in combination with the stop-groove E let into the upper sash, and the stop-groove F let into the lower sash, and having slots 2 and 3 and grooves 7 and 8 which afford suitable bearings on which the stops a and b may engage when moved into position by the thumb-piece A formed on the end of said spindle I so as to lock the sashes B and C in the required position, substantially as specified. 8th An adjustable window-fastener formed on the window-frame, and having catches adapted to engage in suitable bearings, formed on the sashes in such a man¬ner that when the window-fastener is set to permit of the sashes being partially opened it is necessary to close the same from the in¬side before resetting the fastener, when it is desired to throw the sashes up to their full extent and permit them to move free from the catches, substantially as described and specified