US2321800A - Operating means for swinging closures - Google Patents

Description

June 15, 1943. H. CORDREY ETAL OPERATING MEANS FOR SWINGING CLOSURES Filed May '7, 1941 2 Sheets-Sheet 1 ENTOR5.

June 15, 1943. H. CORDREY ETAL 2,321,800

OPERATING MEANS FOR SWINGING CLOS URES Filed May 7, 1941 2 Sheets-Sheet 2 ENTORS. 32

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Patented .lune 15, 1943 OPERATING MEANS FOR SVVINGING CLOSURES Hanoil Cordrey and Walter J. Duvall, Chula Vista, Calif., assignors to Joseph Slutsky, Los Angeles, Calif.

Application May 7, 1941, Serial No. 392,294

7 Claims. (01. 268 -119) This invention relates to a means for operating swingable closures, such, for example, as casement, windows and window screens having frames hinged to swing to and from the closed position.

Heretofore, in devices of the kind to which this invention pertains, it has been the usual procedure to employ as a, means for transmittin the power from the prime mover to the sash operating arm a plurality of gears meshing with each other. In such a construction, owing to the small number of gear teeth brought into engagement with each other at any given time, a relatively great'strain is put upon a few gear teeth'each time the sash is operated. By the present invention this defect is overcome, because a longitudinally movable slide or toothed rack is utilized to transmit the power from a worm on one side to a gear on the opposite side of such rack, thus increasing the number of teeth which inter-engage each other between each of the cooperating, power transmittin e1ements.-

Among the objects of the invention are;

To provide, without materially increasing the weight of the device, a stronger more durable sash operating means; to provide a device of this kind that will more dependably maintain the sash in'the desired adjusted position; to provide a casing for the movable parts of the device that will more advantageously cooperate with them; to improve upon the details of the construction of the movable parts and their mounting means; to provide a more compact device for carrying out the desired functions; and to otherwiseprovide for easier and more positive operation.

Also to provide, in a crank operated device, a structure whereby asash can be swung from a closed to a widely open position with fewer turns of the crank, yet without requiring the application of an excessive amount of torsional force to the crank.

Other objects, advantages and features of in- .vention will hereinafter appear.

Referring to the accompanying drawings,

which illustrate what 'is at present deemed to be tached position, the casing being horizontally sectioned.

Fig. 5 is a vertical section taken on line 55 of Fig. 4.

Fig. 6 is a vertical section taken on line Fig. 5.

Referring in detail to the drawings, the inven tion is shown operatively connected with a swingable window sash I0 which carries at its inner edge a hinge bracket H whereby it is connected by the hinge pin [2 to the extension l3 of the window sill l4, said sill being shown of the angle iron type.

The sash operating means provided bythe invention is shown mounted upon and within a basemember or casing l5 of a generally semicircular shape, having at each end of its flat side an apertured, basal attaching flange IT, these flanges receiving attaching screws H3 whereby the device is secured to the sill I4. 7

Between the flanged portions of the casing IS the sill I4 is provided with a spacious, elongated opening I9 to afford an operating clearance for part of a gear 2| and also for the inner end portion of the swingable, sash operating arm-22, which is shown as integral with said gear. The outer end of said arm carries a headed pivot stud 23 whereby it is slidably pivoted to the sash, the sashhaving welded or otherwise secured to it a channel member 24 having at each side a flange 25 whereby the head of said stud is kept in place within a guideway along which it freely moves. a

By preference and as shown, the casing I5 is made to comprise a base plate 21 and a cover member 23 which not only carries the attaching flange Il-already referred to, but is also provided with an angularly directed marginal flange 29 which fitsaround said base plate. Lugs 3| are shown on the base p1ate,'these lugs carrying studs 32 which pass through holes provided for them in the base plate and may be peened as shown in Fig. 5 to secure the base and cover member together. Y

Returning to the gear H, which turns upon a pivot 35, said gear need not be provided with teeth all the way therearound, but is preferably furnished with a series ofteeth 36'that occupy only about half its periphery. A disconnected or idle rack bar 3'! is provided along one side with a series of teeth 38 which are always in mesh with the toothed portion of the gear 2|, the op posite side of therack having teeth 39 which mesh with the threads 4| of a worm 42.

Said rack 4| has a longitudinal groove 33 in its lower side, the base plate 2'! having a rib 44 which fits within said groove with a working fit, thereby providing a guideway along which the grooved portion of the rack reciprocates. The cover portion of the casing is provided with an extension 45 to provide a longer space in which the rack may slide.

The teeth 33 of the rack are not pitched, but extend rightangularly across it, but the rack teeth 39 are pitched at an angle of about fortyfive degrees in order that they may cooperate properly with the worm teeth 4|, the worm being mounted in an inclined manner in a cupshaped bearing extension or barrel 46 provided for it in the basal part of the casing cover, the cover portion of the casing having a rise fitting over the upper part of this bearing extension. The lower part of the worm has an unthreaded end portion Lil which fits within a bearing recess 43 provided for it in the base 21, the upper part of the worm projecting through an opening 49. provided for it in the casing extension 50.

This opening is larger than the unthreaded part of the worm which it surrounds, but is sufficiently small to cause the adjacent part of the extension 50 to prevent the threaded portion of the worm from being withdrawn through the opening.

The threads of the worm have flat faces Ma which fit with a working fit within the cylindrical bearing surface provided for them within the barrel it. The upper part of the worm is shown squared so as to have fitted over it the shank 52 of a crank 53, said shank having a socket 54 which will fit over said squared part of the worm, thus affording a means for rotating the latter. The shank 52 of the crank is shown provided with a small set screw 55 whereby the crank may, if desired, be permanently secured in its operative position. As only a small, inconspicuous crank is required to operate the sash, in many instances the permanently attached crank will be preferable.

One side portion of the barrel 45 is cut away at GE so as to make room for disposing the threads of the worm in an operative relation to the teeth along the adjacent side of the rack.

While the sash is being swung by the device from a closed position toward a more or less widely open position the inner end of the rack protrudes an increasing amount through the opening 19 provided in the sill M, the sash receding from the sill so as to permit this to occur. This is a space economizing feature which makes it possible to construct the device in a more compact manner.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scope of the subject matter claimed.

What is claimed is:

l. The combination, with a window frame having an apertured sill and a sash swingably mounted on said frame; of a casing, a sash operating arm swingably pivoted to said casing, said arm having an arcuate, gear toothed inner end portion which is pivotally attached to said casing, a reciprocatory rack having teeth along its opposite sides and provided with guide means in said casing, said casing being attached to said sill and having an aperture in its attached side which alines with the aperture in said sill, a barrel shaped member formed in said casing, said member having a cut-away side portion directed toward said rack, and a worm journalled in said barrel, the threads of said worm meshing with the teeth along one side of said rack, the teeth of the opposite side of said rack meshing with the aforesaid gear teeth, an end portion of said rack being caused to project through said aperture while the sash is being swung toward the open position.

2. A sash adjuster having in combination, a casing, a sash operating arm swingably pivoted to said casing, said arm having an arcuate, gear toothed inner end portion which is pivotally attached to said casing, a reciprocatory idle rack having teeth along its opposite sides and provided with guide means in said casing, said casing being attached to a side of a window frame in which a sash swings and having an aperture in its attached side which alines with an aperture in said window frame, a barrel shaped member formed in said casing, said member having a cut-away side portion directed toward said rack, and a worm journalled in said barrel, the threads of said worm meshing with the teeth along one side of said rack, the teeth of the opposite side of said rack meshing with the aforesaid gear teeth, an end portion of said rack being caused to project through said alined apertures while the sash is being swung toward the open position.

3. The combination, with a window frame having an apertured sill and a sash swingably mounted on said frame; of a casing, a sash operating arm swingably pivoted to said casing, said arm having a gear toothed inner end portion which is pivotally attached to said casing, a reciprocatory rack having teeth along its opposite sides and provided with guide means in said casing, said casing being attached to said sill and having an aperture in its attached side which alines with the aperture in said sill, a worm housing formed in said casing, said housing having a cut-away side portion directed toward said rack, and a worm journalled in said housing, the threads of said worm meshing with the teeth along one side of said rack, the teeth of the opposite side of said rack meshing with the aforesaid gear toothed inner end portion of said sash arm, an end portion of said rack being caused to project through said aperture while the sash is being swung toward the open position.

4. A sash adjuster having in combination, a casing comprising a cover section and a base section, a sash operating arm swingably pivoted to said casing, said arm having a toothed inner end portion which is pivotally attached to said casing, a reciprocatory rack having teeth along its opposite sides and provided with guide means in said casing, said casing being attached to a side of a window frame in which a sash swings and having an aperture in its attached side which alines withan aperture in said window frame, a worm housing including a barrel shaped journal formed in the base section of said casing and formed in said casing, said housing having an open side portion directed toward said rack, and a worm journalled in said barrel shaped journal, the threads of said worm meshing with the teeth along one side of said rack, the teeth of the opposite side of said rack meshing with the aforesaid toothed inner end portion of said sash operating arm, an end portion of said rack being caused to project through said alined apertures while the sash is being swung toward the open position, said housing also including a barrel shaped member formed in said cover section and comprising a casing extension into which a portion of said barrel shaped journal projects, said casing extension having an opening through which the upper part of said worm projects, said opening being sufficiently small to cause the adjacent part of the extension to overlie the threaded portion of the worm and thereby prevent the latter from being withdrawn through said opening.

5. A sash adjuster having in combination, a casing, a sash operating arm swingably pivoted to said casing, said arm having a toothed inner end portion which is pivotally attached to said casing, a reciprocatory rack having teeth along its opposite sides and provided with guide means.

in said casing, said casing being attached to a side of a window frame in which a sash swings and having an aperture in its attached side which alines with an aperture in said window frame, and a worm journalledin said casing, the threads of said worm meshing with the teeth along one side of said rack, the teeth of the opposite side of said rack meshing tangentially with the aforesaid toothed inner end portion of said sash operating arm at their point of mesh, an end portion of said rack being caused to project through said alined apertures when the sash is swung toward the open position.

6. A sash adjuster having in combination, a casing comprising a cover section and a base section, a sash operating arm swingably pivoted to said casing, said arm having an arcuate gear toothed inner end portion which is pivotally attached to said casing, a reciprocatory rack provided with guide means in said casing and vertically disposed teeth along one side thereof meshing tangentially with the aforesaid gear teeth at their point of mesh, said casing being attached to a side of .a window frame in which a sash swings and having an aperture in its attached side which alines with an aperture in said window frame, an end portion of said rack being caused to project through said alined apertures while the sash is being swung toward the open position, and means cooperating with the teeth along the side of said rack which is opposite to the first mentioned teeth to reciprocate said rack forwardly and backwardly through said alined apertures.

7. The subject matter of claim 6 and, said means including a worm housing formed in the base section of said casing and comprising a barrel shaped journal provided with a cut-away side portion adjacent said rack, and a worm gear journalled in said barrel shaped journal and meshing with the teeth of said rack opposite said vertically disposed teeth, said housing further including a barrel shaped member formed in the cover section of said casing and comprising a casing extension into which a portion of said barrel shaped journal projects, said exten sion having an opening through which the upper part of the worm projects, said opening being sufiiciently small to cause the adjacent part of the extension to overlie and thereby prevent the threaded portion of the worm from being withdrawn through said opening.

HANCIL CORDREY.

WALTER J. DUVALL.

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