US1711159A - Casement-window fastener - Google Patents

Description

April 1929. R. c. SPENCER 1,711,158

CASEMENT WINDOW FASTENER Filed Feb. 15, 1926 Patented Apr. 30, 1929. v

UITED STATES ROBERT C. SPENCER, OF OAK PARK, ILLINOIS.

CASEMENT-WINDOW FASTENER.

Application filed February 15, 1926. Serial No. 88,234.

The present invention relates to fasteners or locking devices for casement windows.

One of the objects of the invention is to provide an improved fastener for casement windows in which the locking member will have a rotary cam action to the end of compolling complete closure ofthe window and to the end of securely holding the window and the fastener against any rattle or vibration. v

Another object of the invention is to provide a casement window fastener of the above type in which the locking member will have a reciprocatory movement for moving into and out of association with the keeper; and also to provide improved means for holding the locking member in its different positions of reciprocation.

Another object is to provide a fastener for casement windows which will be ex tremely simple and inexpensive to manufacture; one feature of simplicity residing in a sheet metal construction of supporting bracket for the locking member.

Other objects and advantages will appear from the following description of a pre' ferred embodiment of my invention. In the drawings illustrating this embodiment: Figure 1 is a fragmentary elevational view of the inner side of a casement window equipped with the fastener of my invention; Figure 2 is a sectional view through the window at right angles to Figure 1 illustrating the fastener in side elevation;

Figure 3 is alongitudinal sectional view through the fastener; Figure 4 is a transverse sectional'view taken on the plane of the line 47-4: of Figure 2;

Figure 5 is a similar view illustrating the bolt in a diiferent position of rotation;

Figure 6 is a transverse sectional view taken on the plane of line G-G of Figure 2;

Figure 7 is a perspective View of a modified construction of supporting bracket or guide; and

Figure 8 is a transverse sectional view of the same. Figure 1 illustrates the lower meeting corners of a conventional pair of casement windows indicated at'7'8. These windows contact at their lower edges against the usual sill rail 9 of the window frame. The win dow or sash 8 has the usual outer flange 11 adapted to overlap the other edge of the window or sash 7 tohold the latter in closed position. Our improved fastening device,

designated 12 in its entirety, is mounted on i the rail of the right hand sash 8 which carries the outer closing flange 11. Figure 1 represents an adaptation to a double cascment window,but obviously the present fastenor can be adapted to a single casement window, or to any type of swinging window.

The movable locking member of the fastener is carried by the window sash 8 and the keeper or an abutment against which the movable locking member engages is carried by the sill rail 9.. The movable locklng member is acylindrical bolt 14, which is supported for reciprocatingand rotating movements in a supporting bracket 15 secured to the rail of the window sash 8. The stationary keeper with which the lower end of this locking bolt engages consists of an apertured keeper plate 17 which is recessed in the sill rail 9 and which is secured thereto by screws 18. It will be observed from Figures 4 and 5 that the aperture 19 in this keeper plate 17 is of larger diameter than the diameter of the locking bolt, and has a straight line edge along its outer side forming a locking shoulder or surface 21 with which the end of the locking bolt has cam cooperation, as I shall presently describe.

As best shown in Figure 6, the bracket 15 which supports the locking shoulder 14rpreferably consists of a sheet metal. stamping having the central portion of the metal punched outwardly to form a tubular guide portion 23 for the locking bolt. The lateral wing portions taching flanges 2 for mounting the bracket on the window. Screws pass through apertures in these attaching flanges 24E ahd secure the bracket to the sash. I

Secured to the upper end of the locking bolt 14 is an operating handle 27, the hub 28 of which is preferably pinned to the locking bolt. The lower end of the locking bolt is chamfered or beveled off to form a sloping surface 29,.this sloping surface being disposed on the opposite side of the bolt from the handle 27. Thus when the handle is pointed straight back from the window this sloping surface 29will be in position to slip down past the locking surface 21 of the keeper plate to facilitate'the entrance of the lower end of the bolt into this keeper plate. Directly above this sloping surface 29, the bolt is milled out with a transverse cut to form a cam surface or cam shoulder 31.

of the stamping form rear at- When the bolt has been dropped down to locking position indicated in full lines in Figure 3, this cam surface or shoulder 31. will lie opposite the locking surface 21 of the keeper plate, and upon rotation of the locking bolt these two surfaces will exert a. camming action tending to forcibly close the window and to wedge or bind the window and the fastener parts against any possibility of rattle or vibration.

The normal retracted position of the locking bolt when the window is to have free swinging movement is illustrated by the upper dotted line position in Figure 3. To support the bolt in this upper position, 1 have provided a stud or projection on the bolt whicii is adapted to engage on an upper supporting shoulder carried by the supporting bracket 15. As clearly shown in Figures 3 and 6, the stud or projection on the bolt consists of the head 33 of a screw 34- which is rigidly fastened in the locking bolt. The supporting shoulder on the bracket 15 is preferably formed by slotting the tubular guide portion 23 of the bracket horizontally, this slot defining a supporting shoulder Instead of cutting a horizontal slotin the tubular guide portion, this shoulder may be formed by punching or recessing the metal in the interior of the guide portion so as to produce an equivalent shoulder I shall hereinafter describe in connection with Fig-- ures 7 and 8.

This slot or shoulders 35 extended around on each side of the tubular guide, to permit rotation of the operating handle 27 to positions on each side substantially parallel with the inner side of the sash. Depressions 37 may be formed in the two ends of this slot so that the projection 33 on the locking bolt can drop into one of. these de pressions when the operating handle has bet-in swung to either side for retaining the handle and bolt in this position.

From this retracted position the bolt is moved down into its locking position by bringing the projection into registry with a vertical passage way or groove 38 leading downwardly from the shoulder This passage way or groove is preferably formed by punching a bed of metal 39 outwardly from the tubular guide portion to depth sufficient to clear the projection 33. The projection 33 is disposed on the same side of the bolt and in the same plane with the hand 27, and the groove or passage way 3 is so located that when the bolt is moved downwardly by the registry of the projection 33 in this passage way, the lower lOQWilGfl end of the bolt 29 will be in position to slip down past the locking surface 21 or to cam itself down past this surface.

To permit the rotation ofthe bolt in this lower position, incident to the cumming action above referred to, the tubular guide portion 23 is also provided with a lower horizontal slot 42 in which the projection 33 can revolve in the rotative movement of the bolt.

lVith the window substantially closed, when the locking bolt is dropped into the aperture in the keeper plate, the cam surface 31 will just clear the locking surhce 21 of the keeper substantially as shown in Figure 5. By now rotating the handle 27 back into a position substantially parallel with the window sash, this cam surface is brought into pressure engagement with the locking surface 21 and a cam action exerted between the parts which will draw the window closed under considerable pressure. [it the end of this rotative movement the cylindrical surface of the bolt will be presented to the locking surface 21 of the keeper plate so that there will be no tendency of the locking bolt to spring back and release this pressure.

By extending the slots 35 and 42 around on each side of the tubular guide portion 23, the supporting bracket 15 is made universally applicable to right and left hand windows. In adapting the fastener to a left hand window the operating handle 27 can be inverted in its mounting on the upper end of the locking bolt, particularly where such handle has a curved end. Similarly, where the fastener is inverted for mounting in the upper end of a window, the slot 12 will pre vent locking belt 1 1 from dropping down out of the aperture in the keeper plate. T have illustrated the present embodiment as being adapted for an outwardly swinging closure, but it will be evident that the device can be readily adapted to inwardly swinging closures by reversing the keeper plate, and by reversing the sloping surface 29 and the cam shoulder 31 to the other side of the bolt.

In Figures 7 and 8, l have shown modified construction of guide or bracket in which the shoulders 35 and 4:2 and the groove 38 are formed by punching outwardly extending channels or grooves in the bracket. This modified construction of bracket is constructed similarly to the preceding form, consisting of a sheet metal stamping with the intermediate portion of the metal punched orrhvardly to form the tubular guide portion 23 and with the edges extending later-1 ally to form attaching flanges 2 1. Before the tubular guide portion 23 is formed two spaced arcuate grooves 15 and 16 are punched in the metal to extend transversely of the finished guide, as shown in Figure 7. The adjacent walls of these grooves form. the shoulders 35 and 13 0f the preceding form. The metal is also punched outwardly on each side of the web portion of the tubular "aide, as indicated at L7, to form a connecting groove 38, similar to the groove 38 of Figure 6, for connecting the two transverse grooves or channels 15 and 4.6. The head of the screw 33, or some equivalent projection,

operates in these grooves in the same manner as described of the previous embodiment.

Inasmuch as the longitudinal ,bonnecting groove 38 is located on the rear side of the tubular guide, the screw head in this embodiment is located on the rear side of the bolt i. e. facing backwardly diametrically oppositely to the handle 27.

Having thus described my invention, What I claim is:

1. In a device of the class described, the combination of a Window frame having a casement Window and a Window stop, a keeper comprising a flat metal plate having an aperture in the same, said aperture having a flat side, said plate being supported on said frame adjacent said Window, means on said casement Window for journalling a locking bolt, a locking bolt having a flat surface eccentrically located upon its end and force multiplying means for sliding said bolt into said keeper and rotating the same to cam said Window against said stop, said bolt having circular portions adapted to engage said keeper after said Window is brought to a tight closure.

2. In a device of the class described, the combination of a Window frame havinga casement Window and a Window stop, a keeper comprising a fiat metal plate having an aperture in the same, said aperture having a fiat side, said plate being supported on said frame adjacent said Window, means on said casement Window for journalling a locking bolt, a locking bolt having a flat surface eccentrically located upon its end, and a lever located upon the other end of said bolt and adapted to slide said bolt into said keeper and to rotate the same in either direction to cam said Window against said stop.

3. In a device of the class described, the combination of a window frame having a casement Window and a Window stop, a keeper comprising a flat metal plate having an aperture in the same, said aperture having a flat side, said plate being supported on said frame adjacent said Window, means on said casement Window for j ournalling a looking bolt, a locking bolt having a flat surface eccentrically located upon its end and a beveled surface extending from said fiat surface to the end of said bolt, and a lever located upon the other endof said bolt and adapted to slide said bolt into said keeper and to rotate the same in either direction to v cam said Window against said stop.

4. In a casement Window fastener, the combination of a keeper comprising a flat metal plate having an aperture in the same, said aperture having a flat side, a supporting bracket comprising a sheet metal stamping adapted to journal a bolt having a pair of transverse grooves pressed in said journal and athird groove connecting said transverse grooves, a bolt journalled in said stamping and having a shoulder adapted to slide in said grooves, said bolt having a flat end adapted to act as a cam against the flat side of said keeper and a handle carried by the other end of said bolt and extending in i1), ilirection opposite to the flat end of said 5. In a casement Window fastener, the combination of a keeper comprising a flat metal plate having an aperture in the same, said aperture having a flat side, a supporting bracket comprising a sheet metal stampin adapted to journal a bolt having a pair of transverse grooves pressed in said journal and a third groove connecting said transverse grooves, a bolt journalled in said stamping and having a shoulder adapted to slide in said grooves, said bolt having a flat end adapted to act as a cam against the flat side of said keeper and a handle carried by the other end of said bolt and extending in a direction opposite to the flat end of said bolt, said bolt having its end tapered towards said flat end to facilitate insertion in said keeper.

In Witness whereof, I hereunto subscribe my name this 10th day of February, 1926. ROBERT C, SPENCER.

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