US1221824A - Sash-lock. - Google Patents

Description

'1. H. BOYE.

SASH LOCK.

APPLICATION FILED JULY 22. I916.

Patented Apr. 10, 1917.

JAMES H. IBOYE, OF CHICAGO, ILLINOIS, ASSIGNOR TO JAMES H. BOYE MANUFACTURING COMPANY, OF CHICAGO, ILLINO IS, A CORPORATION OF ILLINOIS.

SASI-I-LOCK.

Specification of Letters Patent.

Patented Apr. 10, 1917.

Application filed July 22, 1916. Serial No. 110,671.

To all whom it may concern.

Be it known that I, J AMES H. BOYE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sash-Locks, of which the following is a specification.

This invention relates to sash locks for locking the upper and lower sashes of a window together so as to form a tight joint.

Locks of this general character now on the market comprise a keeper mountable upon the upper sash and a locking member mountable upon the lower sash provided with a tapered cam-shaped finger, or a cam-shaped flange, adapted to be rotated in a horizontal plane about a vertical pivot into locking engagement with said keeper. In order to make a tight joint between the sashes it is necessary for the lock to not only draw the sashes together but also to lift the upper sash to a greater or a less degree, depend ing upon the amount that the upper sash may have dropped or been depressed from an entirely closed position. I have found that it is very difficult to lift the upper sash with the horizontally-movable locking de vices now in use for the reason that such devices carry the upper sash laterally when the locking finger or cam engages with the keeper, and causes the sash to bind against one side of the window frame so that it can be raised only with extreme difliculty. Furthermore, if the upper sash has dropped more than a fraction of an inch the horizontally movable locking finger or cam cannot be engaged with the keeper for the reason that the finger will travel above instead of beneath the keeper.

One of the primary objects of my present lnvention is to provide a sash lock in which the locking member will exert a direct vertical lift upon the keeper so as to carry the upper sash upwardly in a direct line without moving it laterally so as to cause it to bind in the window frame.

Another object of my invention is to provide a sash lock which will be capable of lifting the upper sash a greater distance than has been possible with sash locks heretofore employed, thereby enabling the looking member to engage with the keeper even when the upper sash has moved downwardly a considerable distance.

A further object is to provide a sash lock which will be strong and durable, easy to operate and economical to manufacture, and one which will firmly bind and lock the sashes of a window together.

Still another object is to provide a lock in which both the keeper and the locking member will have metal bases by which these members may be readily lined up with each other when applied to a window, which bases will also effectually prevent a burglar or intruder from obtaining access to the lock and releasing the same by boring upwardly through the rails of one of the sashes on which the locking member or the keeper is mounted.

Other objects and many of the inherent advantages of this invention will be readily appreciated as thesame becomes better understood by reference to the following description when considered in connection with the accompanying drawings. Referring to the drawings,

Figure 1 is a sectionalview through the contiguous sash rails of a window, my improved sash lockbeing shown in elevation in locked position;

Fig. 2 is a plan view of the construction shown in Fig. l;

Fig. 3 is a similar view showing the posii103 of the parts when the lock is released; an

Fig. 4 is a sectional view on the line H of Fig. 3.

On the drawings reference character 5 indicates the lower rail of the upper sash of a window, and 6 designates the upper rail of the lower sash, which rails normally overlap when the window is closed, as shown in Fig. 1, and are customarily drawn together and locked against relative movement to form a tight joint and prevent unauthorized opening of the window.

The mechanism for clamping and locking the two sashes together, which forms the subject matter of my present invention, comprises a keeper designated generally by reference character 7 provided with a base 8 adapted to be secured by screws 9 or other suitable fastening means to the lower rail of the upper sash and having its upper end turned horizontally as indicated at 11 and its extremity bent downwardly to form a flange 12. This keeper is mounted on the upper sash with th edge of the base plate flush with the edge of the sash.

to cooperate with the keeper and comprising a base plate 13, a U-shaped supporting member 14 and a cylindrical locking member 15 mounted in alined openings forming bearings in the upright legs 16 and 17 of the support 14., so asto be capable of both rotary and longitudinal movement relatively to the support. A portion of the upright member 16 adjacent to its bearing opening is punched inwardly to form a spirallv disposed projection member 15, and the member 15 is provided on its periphery with a spirally disposed rib 19 adapted to engage with the projection 18 when the cylinder is rotated in a counter clockwise direction, viewing Fig. l, whereby the cylinder is moved longitudinally outwardly relatively to its supports into the position shown in Fig. 3. The outer end of the cylinder is equipped with a handle or finger piece 21 by means of which th cylinder may be manually rotated through an arc of approximately 180 degrees.

A portion of the inner end of the cylinder is removed to provide a recess 22, best shown in Fig. 1, and the extremity of that portion of the cylinder overlying the recess is provided with a radially projecting flange 23 disposed at an angle to the longitudinal axis of the cylinder so as to present an inclined or cam face adapted to be engaged behind the flange 12 of the keeper. The shoulder 24:, which joins the lead end ofthe camshap'edflange with the cylinder, is designed to engage the lower extremity of the keeper flange 12 and exert a direct upward lift on the keeper when the cylinder is rotated from the position shown in Fig. 3.

The base plate 13 of the locking device is of substantially the same width as the inner edge of the plate 8 of the keeper and this base plate is attached to the supporting member l t by punching up portions of the metal of the plate through openings in the base of the support 14 and then jamming or riveting the projecting edges downwardly, as indicated by reference character 25 (Fig. 1) to securely fasten the support and base plate together. The locking device is attached to the upper face of the lower sash 6 by screws 26 or other fastening means which 7 extend through the openings in the supporting member and base plate. In positioning the parts on a window the edges of the base plates-8 and 13 serve as guides for the proper alinement of the keeper and locking device, since the edge of each is placed flush with the edge of its respective sash and the two bases are positioned so that their said edges are 4 in substantial alinement .as shown in 7 Figs. 2'and 3. Th base plate 13 also serves as a protector for the lock in that it prevents a burglar or other intruder from bor- 18 beneath the cylindrical ing upwardly through the sash rails between the locking device and the keeper for the purpose of obtaining access to the lock in order to release it by manipulation from the outside through the hole bored in the sashes.

After the parts have been assembled the operation of the device is substantially as follows: Fig. 3 shows the position of the device when unlocked, and from an inspection of this figure it will be. observed that the cylindrical member 15 has been moved longitudinally outward by the cooperative action of the projection 18 and the spiral rib 19 so that the inner end of the cylinder will clear the keeper when either of the sashes is moved relatively to the other to open the window. It will be observed from Figs. 3 and 4 that when the cylinder is withdrawn from the keeper the cam-flange 23 extends downwardly and the recess 22 is above the cam.

hen it is desired to lock the sashes the cylinder is rotated in a clockwise direction, viewing Fig. 4. Initial rotary movement projects the cylinder longitudinally toward the keeper due to sliding engagement of the spiral rib 19 with the leg 16 of the cylinder support until the outer end of the spiral rib 19 clears the latter. This movement brings the shoulder 24c beneath the lower edge of the keeper flange 12, and since this shoulder is at this time below the axis of the cylindrical member it will be obvious that it will engage with the lower edge of the flange 12,

even if the upper sash carrying the keeper is partially open. Upon further rotary movement of the cylinder, the shoulder 24: being moved upwardly, will engage the lower edge of the keeper flange l2 and exert a direct upward thrust thereon which will lift the upper sash into alinement with the upper rail of the lower sash. In other words, the parts are so proportioned that when the lower edge of the keeper flange 12 has been lifted so that it is carried by the top of the cylindrical member 15 the two sash rails will be in alinement. After alining the sash rails further rotary movement of the cylindrical member will draw the keeper, and thereby the upper sash, outwardly against the lower sash by reason of the action of the cam-flange 23 against the keeper flange 12. IVhen the cylinder has been rotated through an arc of substantially 180 degrees or until the movement of the finger-piece 21 is limited by engagement with the lower portion of the upright 16, the cam 23 will have drawn the two sashes to gether so that they are clamped and held in close relation to form a tight joint. In this locked position, shown in Figs. 1 and 2, the top of the cylinder is disposed beneath the keeper-flange 12 and eifectually prevents opening movement of either of the sashes, and at the same time the clamping action of the cam 23 acting against the keeper flange,

securely holds the sashes together and pre-= vents rattling.

It will be manifest from the foregoing that I have provided a sash lock which lifts the upper sash, in case the sashes are not in alinement, by a direct upward thrust without moving either sash laterally so as to cause it to bind at the sides against the win dow frame. It will also be obvious that since the shoulder 24, which does the lifting, travels upwardly a distance nearly equal to the diameter of the cylindrical member the sashes may be considerably out of alinement at the beginning of the locking operation without interfering with the operation of the device which, when the locking action takes place, automatically alines the sashes, firmly clamps them together and effectually holds them against opening movement.

While I have shown and described one preferred embodimentof my invention it should be understood that the structural details are capable of considerable modification and variation without departing from the essence of the invention as defined in the following claims.

I claim:

1. In a sash lock, the combination of a keeper adapted to be mounted on a sash, a support adapted to be mounted upon an adjacent sash, a rotatable and longitudinally movable member carried by said support, means for moving said member longitudinally into position beneath said keeper upon initial rotary movement thereof, means on said member for lifting said keeper vertically upon further rotary movement of said member, and means on said member for drawing said keeper toward said support after the vertical movement of said keeper has been completed.

2. In a sash lock, the combination of a keeper, a support adapted to be mounted adjacent to said keeper, a member mounted in said support so as to be capable of rotary and longitudinal movements, a shoulder on one end of said member for imparting a direct vertical thrust to said keeper, and a cam flange on said member in proximity to said shoulder for drawing the keeper toward said support subsequently to the lifting thrust action of said shoulder.

3. In a sash lock, the combination of a keeper, a support adapted to be mounted adjacent to said keeper, a cylinder mounted in said support with capacity for both rotary and endwise movement, an eccentric shoulder on one end of said cylinder for imparting a direct lifting movement to said keeper, a cam flange on said cylinder in proximity to said shoulder for drawing the keeper toward said support subsequently to the lifting action of said shoulder, an operating handle on the other end of said cylinder, and cooperating cam devices on said support and cylinder respectively for elfecting an endwise movement of the latter simultaneoiisly with its rotary movement.

JAMES H. BOYE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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