US1148705A - Window-lock. - Google Patents

Description

T. A. MONSEES.

WINDOW L APPucATmN FILED MA 191s.

1,1,705, Patented Aug. 3, 1915.

"is PATENT @FFICE.

THOMAS A. MONSEES, OF NEW YORK, N. Y., ASSIGNQR 0F ONE-HALF TO WILLIAM STEMPEL, 0F BROOKLYN, NEW'YORK.

WINDOW-LOCK.

Specification of Letters Patent.

Patented Aug. 3, 1915.

Application filed March 6, 1915. Serial No. 12,493. I

To all whom it may concern:

Be it known that I, THOMAS A. MONSEES, a citizen of the United States, and a resident of the borough of Queens, in the city and State of New -York,'have invented certain new and useful Improvements in Window- Locks, of which the following is a specification.

My invention relates to window locks adapted to be used for locking sliding windows to prevent them from being moved up or down except from the inside of the buildmg.

An object of the invention is to provide a lock of this character which will lock the window sash or sashes in closed or partially opened position, so that'the sash will be securely locked when entirely closed or when partially opened for ventilation.

Another object of my invention is to provide a lock of this character which will be very inexpensive, light and compact, but which will nevertheless be strong enough to defeat any attempt to open a window from the outside, even to the extent of withstanding the. action of a jimmy applied to the sash.

The present invention is such that the lock cannot be released by slipping a knife or flat instrument between the engaging member and the sash.

In the drawings forming part of this application, Figure 1 is a front elevation of the upper and lower sashes and part of the easement of an ordinary window, showing my improved lock attached, Fig. 2 is a sectional View thereof, taken on the line 2-2 of Fig. 1, Fig. 3 is a sectional view, taken on the line 33 of Fig. 2, and Fig. 4: is a sectional view, taken on the line 4l4 of Fig. 3.

The look, as herein shown, consists of but three separate parts which may be stamped from sheet metal, and for this reason the device is very inexpensive. As shown in the drawing, the stationary part consists of a base 1, which is attached, as by the screws 2, to any suitable portion of the sash, preferably to the upper surface of the top rail 3, of the lower sash, and near one side of the latter, so that the lock may engage the side rail 4 of the upper sash. There are preferably provided integral, depending plates 6, 7, at opposite ends of the base, which lie against the outer and inner faces of the rail 3, to which they are secured by screws 8, 9,

to more firmly hold the base in place to withstand lateral stresses.

lhere are upstanding side plates 10, preferably integral with the base, whichsupport a pin 11, extending through apertures in the plates and held therein in any desired manner, as by upsetting the ends. There is an eccentric and resilient wedging member mounted upon the pin 11 and moving between the plates 10. This consists of a resillen-t strap spring having one end 13, wound around the pin 11 to secure the spring in place and to permit it to swing around the pin as its axis. This spring member is'curved at 12 to form a looped or oval portion and from there it passes under the pin 11 and extends upwardly at 13 if the device is in locked position, or outwardly if in unlocked position. There is a brace arm 14 which is hinged at 15 to the extended arm '13, and it is free to swing from this hinge. The upper surface .of the base 1 is provided with teeth or notches 16 with which the free end of the brace 14 is adapted'to engage.

When the device is attached to a window, as shown in the drawing, the brace 14 is tripped in the manner shown in Fig. 4 whenever it is desired to move the sash. When, however, the sashes are to be locked the arm 13 is swung up to the position shown in Figs. 1, 2 and 3, and the lower end of the brace 14 is engaged with the notched portion of the base. In swinging the arm 13 upwardly the curved portion of the spring, which is eccentric to its pivot pin 11,

sion and the parts hold tightly in place. If

any attempt is made to force a knife or other flat object between the sash rails and between the spring loop 12 and the sash bar 4, nothing will be gained even if the knife is forced under the spring, becausethe spring will not be moved from clamped position and its pressure will not be released from the upper sash. The inserted knife will not assist the movement of the sashes but it will simply be tightly pressed between the parts. No action, on the spring loop will release the grip. Tampering withthe the loop will, if anything, tighten its grip, because any compression of the loop will tend to advance the brace to a notch of the base which will cause the loop to be held more tightly compressed.

To lock the sashes in partly opened position the lock is first released and then either or both sashes are moved to the de sired position. The lock is then set in the manner previously described, and it will lock the sashes in their new positions, in the same manner as when both sashes are closed.

Having described my invention, what I claim is:

.1. A 'device for locking a window sash, comprising a base and a resilient member formed in a loop and mounted to turn eccentrically on a pivot and arranged to engage a surface adjacent the window sash to which the base is secured.

2. A device for looking a window sash, comprising a base and a resilient member formed in a loop and mounted to turn eccentrically on a pivot and arranged to engage a surface adjacent the window sash to whichthe base is secured, and means for holding said loop in engagement with said surface.

3. A device for looking a window sash, comprising a base, a resilient member formed in a loop and mounted to turn ec Copies of this patent may be obtained for five cents each, by addressing the centrically on a pivot and arranged to engage a surface adjacent the sash to which the base is secured, and a brace fulcrumed to said resilient '-member and adapted to hold said loop engaged with said surface.

4. A device for locking a window sash, comprising a base, aresilientmember formed in a loop and mounted to turn eccentrically on a pivot and arranged to engage a surface adjacent the sash to which the base is secured, and a brace fulcrumed to said resilient member, said base having-notches for holding the free end of the brace, whereby the resilient member may be held in engagement with said surface.

5. .A device for looking a window sash, comprising a base, upwardly extending platesand a pin supported in said plates, a spring rocking on said pin and moving between said plates, said spring comprising a loop arranged eccentrically relative to the pin, said spring extending under, and beyond the pin to form an arm and a brace fulcrumed to said arm, said base having notches withwhich the free end of the brace may engage, whereby the eccentric loop may be held against a surface adjacent the sash to which the device is attached.

Signed at the'city, county and State of New York, this 3rd day of March, 1915.

THOMAS A. MONSEES.

Commissioner of Patents,

Washington, D. 0.

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