US1387302A

US1387302A - Safety-lock for windows and the like

Info

Publication number: US1387302A
Authority: US
Inventors: Page Peter
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-12-23
Filing date: 1918-12-23
Publication date: 1921-08-09
Anticipated expiration: 1938-08-09

Description

P PAGE.

SAFETY LOCK FOR WINDOWS AND THE LIKE.

APPLICATION FILED mac. 23, 1918.

1,387,302 Y PatentedAug- 9,1921.-

HEEL!!! "llllllllllllll UNITED STATES PATENT OFFICE.

PETER PAGE, OF IPAWTUCKET, RHODE ISLAND;

SAFETY-LOCK FOR WINDOWS AND THE LIKE.

Specification of Letters Patent.

Application filed December 23, 1918. Serial No. 268,053.

or safety latches for locking together two sliding members similar to the sashes of windows and is intended to provide a device of this class which shall automatically lock the two sliding members or sashes against being forced by each other when the sashes or members are in closed posi-' tion. Provision is made by which the unlooking or disengagement is readily effected to allow one sash to slide by the other while insuring the automatic locking of the sash when it is restored to locking position without further attention to the catch By the arrangement hereinafter described,

the window sashes when in closed position must be "automatically locked due to the mere shifting of thesash to locking position. Provision is'made so that in case the catch is moved to release position when the window is open it will be impossible to close thewindow 'until'the catch is restored to locking position, hence, no'act of memory is'required to lock the window when it is closed.

In its general feature the invention comprises-a hook member secured, let us say, to the upper sash adjacent to the medial or dividing plane between the two sashes, and'a latch pivotally mounted in a housing or support on the top of the lowersash in alinement with saidhook, said latch being provided'with two hook-engaging members one of which projects beneath the hook when in looking position and the other of which projects in line with the hook when the latchjis' in released or unlocked position means being provided. for releasing the latch automatically to locking position when the window is closed by drop ving the lower sash. and for maintaining the latch r in unlocked. position to permit the opening of the window by the raising of the lower sashor'thedropping of the upper one. v

. It will be understood that. the device is applicable to the locking of any two sliding adjacent members although it is particularly intended for window sash use.

In the accompanying drawings I have illustrated the preferred form embodying the principles of this invention in which Figure 1 is a vertical central section showing the sashes automatically locked against opening.

F ig. 2 is a vertical side elevation showing the housings in section with the latch in released or unlocked position.

Fig. 3 is a plan View showing the latch in looking position. i

Fig. 4 is a horizontal section through the latch housing, a spring member showing.

the means for holding the spring in place. Fig. 5 is a rear elevation of the latch member.

In the practice of this invention according to the form illustrated in the drawings I Patented Aug. 9, 1921.

I provide a hook membera provided with a forwardly projecting lip or lock-engagingomember a adapted to be secured to the lower cross" piece of. theupper sash m with its; open side projecting inwardly from the .wlndow sash but not beyond the medial or dividing plane between the two sashes extending in the direction of their sliding movement.

On the top cross bar of the lower sash is mounted a housing 6 whose Side walls affordsupport for the pivot pin or journal 6 which pivotally supportsthe latch d.

The latch 03 has a tongue or thumb piece d projecting up through the top of the holusingb as shown in Figs. 1 and 3, and

beyond said thumb piece is provided with an outwardly projecting portion or ledge 03 which engages the lip a when projected outwardly beyond the medial or dividing plane'between the sashes so as to partly side. of the pivotal center is another hookengaging portion (5 so disposed as to lie on the inward side of the dividing plane when the latch is in looking position but to spring forward outwardly beyond the dividing plane when the upper portion of the latch is thrown inward to sash releasing position as v shown in Fig. 2. The two hook-engaging members therefore form parts of an angle lever to alternately project into hook-engaging position.

Near the central pivot the latch is pro.- 1 110 vided with a ledge or spring engaging porvoverhang the upper sash. On the lower veniently opened, the heel member (Z acting.

g tension of the spring.

of the window.

tion (2* havingangularly disposed faces the apex of which is engaged by the bow sprlng 0 to hold the latch in locked position as 1n Fig. 1, while the movement of the latch.

In the position shown in Fig. 1 the projecting hook-engaging portion or lip d of the latch is beneath the lip (4 of the hook member and serves to prevent theopening Pressure with the finger in an inward direction against the tongue d swings the latch into completely unlocking position as in'Fig. 2 withthe heel portion d projecting inward in position to engage the lip a during the initial upward movement of the lower sash or downward movement of the upper sash. This heel portion d is so proportioned that as it comes into engagement with the lip a it will spring the latch beyond the dead center and restore the latch to locking position at the same time allowing the window to be completely opened. The closing of the window wlth the latch in looking position springs the upper side ofthe hook member into engagement against the outer beveled surface of the latch throwing the latch back far enough to allow the sash to be returned to closed position but not beyond the dead center so that immediately the lip a has passed by, thelatch The springs back into locking position. spring employed is a simple bow spring of U-shaped contour is preferably provided with short side wings'or extensions 0 on its bottom portion to allow the springto,

drop in behind the two lugs 6 formed on the bottom of the housing Z2 which serves to keep the spring correctly positioned forservice.

After the window is opened, if anyone should thoughtlessly open the latch to release position the heel cZ projects beyond the lip a so as to prevent closing of the windew, and in order to close the window the latch mustbe restored to locking position from which it yields slightly to allow the window to be closed and then snaps back;

into locking position automatically.

It will, therefore, be seen that the window can not be closed without putting the latch intojlocking position while it is very conautomatically as a re-settingmember for restoring the latch to locking POSltlOIl.

In other words, when in coma is moved by the other, and a spring engag- What I claim is: 1. The combination of two framesv arranged in juxtaposition to slide by each mounted on the other frame and provided with two angularly disposed hook engaging portions one of which when projected beyond the dividing plane acts to lock both frames against sliding movement, the other of which when projected beyond the dividing plane acts to restore the latch automatically to locking position when either sash ing said latch to hold the same yieldingly on either side of its dead center of pivotal movement, substantially asdescribed.

2. An automatic sash locking device embracing in its construction a locking hook. rigidly secured to one sash of the window, a latch pivotally mounted on the other sash of the window and forming essentially an angle lever either arm of which may be moved alternately into position projecting beyond the medial plane of the two sash members, and a tension spring for yieldingly retaining the latch member in either position when moved in either direction beyond the dead center, substantially as described.

3. In, asash fastener the combination of a latch engaging member fixed to one sash of the window, a latch member pivotally mounted on the other sash of the window in position to engage said fixed member,

said latch having an interlocking projection for engaging said hookmember, an angularly disposed projecting trip memberara ranged to restore the latch from released to locking position when the window is opened, and a tension springrfor holding the latch in its locking, position or its extreme released position, substantially as described. 1

4. A sashfastener embracing, in combina- 11.0 tion a hook member fixed to one sash, a pivotally mountedlatch arranged on the other sashin juxtaposition to said fixed member for engagement purposes, saidlatch having; a projection on one side of the center arranged to form lockingengagement with said fixed member and having anotherprojecting portion on the other side of the center arranged to lie in the path of said fixed member when the latch is in released position, 1 said latch being alsoprovidedv with inclined faces for engagingfsaid fixedmember when the window is being closedin. order to displace thelatch sufficiently to allow the window to be closed and. a spring arranged to return the latch to locking position when the sashesare inposition to be locked, substantially as described. j i r 5. Asashfastener embracing in its construction a latch-engaging member secured to one of the members to be looked, a housing secured to the other member, a latch pivotally mounted in said housing, a tension spring positioned in said housing beneath the latch to engage a portion of the latch and hold it in definite position on either side of the dead center of the spring pressure, said latch being provided-with two angularly disposed projecting members adapted to alternately engage-the aforesaid latch engaging member and acting respectively to lock the members against sliding apart or to restore the latch to locking position when the members are slid apart, substantially as described.

6. A sash fastener embracing in its construction a hook member fastened to one sash, a housing fastened to the other sash adjacent to said hook member said housing being provided with retaining bosses on its bottom surface, a bow spring provided with wings projecting behind said bosses to retain the spring in position for normal action, a pivoted latch mounted in said housing and having angularly disposed projecting portions to engage said hook member, said latch being also provided with a projecting angle portion engaging said spring on either side of the direct line of pressure of said spring toward the pivotal center of the latch, sub

stantially as described.

In witness whereof, I have subscribed the above specification.

PETER PAGE.