US2041396A - Closure fastener - Google Patents

Description

Patented May 19, 1936 UNITED STATES PATENT OFFIQE 2 Claims.

This invention appertains to closure fasteners, and more particularly to a novel device for holding the sliding sashes of a window in a closed position or any preferred, adjusted open position.

I am aware of the fact that it has been proposed to provide concentric discs, cams, and the like for windo-w sash fasteners, but all of these devices (with which I am familiar) are open to serious objections. Some fail to positively hold the sashes against unauthorized movement; others tend to seriously mar the rails of the sashes; and others are hard to release after having finally caught the sash rails.

It is, therefore, one of the salient objects of my invention to provide a sash fastener, which will be positively urged into tight locking position with the sashes, for forcing the sashes apart and into tight binding contact with the sash stops, or guides, when unauthorized attempt is made to open the window from the outside, and thus effectively hold the sashes closed against such attempts, and which can be quickly released by persons on the inside of the window, the device being so constructed that the marring of the sashes is eliminated.

Another salient object of my invention is to provide a sash fastener embodying rotatable friction rollers carried by a manipulating lever pivoted on a bracket secured to one sash, novel means being provided for positively forcing the rollers into tight binding contact with the other window sash and against rotation when forcible means is used to open the window.

A further object of my invention is the provision of pinions carried by the friction rollers for meshing engagement with inclined rack bars on the bracket, the pinions and rack bars function- Aing to urge the rollers into locking position and against rotation when the sashes are moved in one direction (to an open position) and to a released position when the sashes are moved in an opposite direction.

A further object of my invention is to provide novel means for constructing the bracket and for associating the bracket with the window, so as to prevent the operation of the lever and rollers by the insertion of instruments between the meeting rails of the sashes.

A still further object of my invention is to provide a sash fastener of the above character, which will be durable and efiicient in use, one that will be simple and easy to manufacture, and one which can be placed upon the market at a reasonable cost.

With these and other objects in View, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described, claimed and illustrated in the accompanying drawing, in which drawing:-

Figure 1 is a fragmentary longitudinal section through a pair of window sashes, showing my novel fastener incorporated therewith, the fastener being shown in its operative position.

Figure 2 is a top plan View of the fastener re' moved from the window.

Figure 3 is a longitudinal section through the fastener, taken substantially on the line 3 3 of Figure 2.

Figure 4 is a transverse section through the fastener, taken substantially on the line 4-4 of Figure 3, looking in the direction of the arrows.

Figure 5 is a side elevation of a slightly modified form of fastener.

Figure 6 is a top plan View of the saine.

Figure '7 is a longitudinal section through the modified form of fastener, taken on the line 'I-'I of Figure 6.

Figure 8 is a transverse section through the modified form of fastener, taken on the line 8-8 i of Figure 7, looking in the direction of the arrows. Referring to the drawing in detail, wherein similar reference characters designate corresponding parts throughout the several views, the

letter F generally indicates my improved fastener,;

and W a window with which the same can be associated.

The window W includes top and bottom sliding sashes I and II. These sashes are of any preferred construction, and the upper sash Ill includes side rails I2 and a bottom, or midrail, I3. The lower sash II includes side rails I4 and a top, or midrail, I5. As in'the ordinary construction, the midrails I3 and I5 are adapted to abut when the sashes are in their completely closed positions.

My improved fastener F includes a bracket I for rockably supporting the manipulating lever 25, which in turn carries the pair of friction rollers 26. Il having the upstanding, spaced, parallel side walls I8. These side walls I8 extend to the eX- treme front of the base plate I'I to provide guards I9, for a purpose which will be later set forth.

In rear of the guards I9, the inner edges of the side walls I8 are provided with rack bars 2D. These rack bars are at an angle to the vertical and extend upwardly and rearwardly. The purpose of these rack bars will be hereinafter more fully set forth.

Extending transversely across the bracket is a pivot pin 2|, and the terminals of the pivot pin are supported by the side walls I8 at a point intermediate the ends thereof. The base plate I'I can be provided with openings 22 for the reception of fastening elements (not shown) to permit the firm securing of the bracket to the top, or midrail, I5 of the lower sash II.

By referring to Figure 1 of the drawing, it will be noted that the bracket extends beyond the The bracket I6 includes a base plate L inner edge of the midrail I 5 for engagement with the upper surface of the midrail I3. The purpose of this will also be later described.

The manipulating lever 25 has its side edges provided with depending pivot ears 21. These ears 21 are located intermediate the ends of the lever, and are provided with enlarged bearing openings 28 for loosely receiving the pivot pin 2|. The inner end of the lever 25 is rolled to provide a hinge barrel 29 for reception of the pintle 3U. This pintle 30 has mounted thereon the friction rollers 26, and the rollers include metallic hubs 3I and rubber or felt tires 32. Formed on the hubs 3| of the rollers 26 are pinions 32, which mesh with the rack bars 2B. The outer end of the lever has formed thereon a manipulating handle 33.

The bracket is applied to the midrail I5 of the lower sash I I adjacent to one side thereof, so that the rollers 26 will be enabled to frictionally engage the inner face of the side rails I2 of the upper sash I0.

In use of the fastener, considering that the sashes are in their closed position (see Figure 1 of the drawing) and an attempt is made to open either the top or bottom sash, the rollers will be swung downwardly and the pinions 32, riding on the rack bars, will force the rollers into tight engagement with the rails I2. This will force the sashes apart and cause the same to bind against the stops, or guides. Obviously, the more pressure is exerted on the sashes, the further apart the sashes will be forced. Accidental rotation of the rollers is prevented, due to the engagement of the pinions with the rack bars. Thus, the sashes will be rmly held in a closed position.

I lay particular stress on the pinions and rack bars, in that were the rollers left for free rotation, opening movement of the sashes might be had when undue pressure is placed on the sashes, as the rollers would then tend to rotate with the longitudinal movement of the sashes.

When the sashes are moved to a closed position, the rollers will tend to move upwardly and away from the rails I2, thus allowing free closing movement of the sashes. When the sashes are locked and it is desired to release the same, it is merely necessary to raise the sashes, and the pinions 32 riding on the inclined rack bars 2D will force the rollers away from the rails I2. Obviously, the sashes can be locked in a partially opened position, when such is desired. The handle 33 forms a convenient means for raising the rollers when the sashes are being opened from the inside of the window.

By having the base plate I'I extending over the midrail I3, persons are prevented from inserting implements between the midrails I3 and I5 and pushing up on the rollers. The side guards I9 also help to prevent the insertion of instruments over the base plate I'I and into engagement with the rollers. Thus, the sashes will be securely held against unauthorized opening movement even though there should be play between the meeting faces of the rails I3 and I5.

In Figures 5 to 8 inclusive, I have illustrated a slightly modified form of the fastener. This fastener operate-s exactly in the same manner as the form previously described, and the difference between the two is mainly in the construction of the bracket.

The modified form of the device is generally indicated by the reference character M, and the same includes the supporting and attaching bracket 35 which can be stamped from sheet metal, if so desired. This bracket 35 includes longitudinally extending, like side plates 35 connected by an inverted U-shaped bridge piece 31. The inner edges of the bridge piece has formed thereon rack bars 38 which are arranged at an angle to the vertical.

Disposed between the side walls of the bridge piece 31 is the manipulating lever 39, and this lever is provided intermediate its ends with an enlarged opening for receiving the pivot pin 39 anchored to the connecting piece.

The forward end of the lever carries a pintle, or shaft, 40 on which is secured the friction wheels 4I. These friction wheels 4I have secured thereto pinions 42 which mesh with the rack bars 38. The outer end of the lever 39 is provided with the manipulating finger-piece, or handle, 43.

Formed on the outer side edges of the plates 35 are upstanding guard flanges 44, and the inner edges of the plates 36, at their forward ends, are provided with abutting guard lips 45.

As brought out above, the modified form of fastener M operates and functions in the same manner as the form first described. It is to be noted, however, that the lips 45 form means for preventing the insertion of an instrument up between the plates 36 to lift the rollers, and the guard flanges 44 also prevent the insertion of an instrument around the base plates.

As shown in dotted lines in Figure 1 of the drawing, a housing, or guard, can be provided for the device, and, if preferred, the same can be slipped over the base plate and held in place by frictional contact with the base plate.

Changes in details may be made without departing from the spirit or the scope of this invention, but what I claim as new is:-

l. A sash fastener comprising, a bracket including a pair of longitudinally extending attaching plates, an inverted U-shaped connecting piece uniting the plates, rack bars formed on the inner edges of the connecting piece disposed at an angle to the vertical, a lever loosely and rocki ably supported by the connecting piece, friction rollers rotatably carried by the forward end of the lever, pinions rotatable with the rollers meshing with the rack bars, upstanding guard flanges on the side edges of the plates, and inwardly directed abutting lips formed on the inner edges of the plates at the forward ends thereof.

2. A sash fastener comprising a bracket including an attaching portion and a pair of upstanding, spaced, parallel side plates having inclined rack bars formed on their forward edges, a cross-pin carried by said side plates, a lever loosely and rockably mounted upon the pin, a bearing on the lever, a shaft in the bearing, and a pair of rollers rotatably mounted on the shaft, each of said rollers including a hub having an integral pinion engaging a rack bar, and a cornpressible tire on the hub at one side of the pinion.

JOHN R. BURBRIDGE.

Images