US253005A - Sash-cord pulley - Google Patents

Description

' K. CLARK. SASH' GOED PULLBY.'

Patented" Jan. 31,1882..

Unirse Sterns JOHN K. CLARK, OF BUFFALO, NEW YORK.

SASH-CORD PU LLEY.

SPECIFICATION 'forming part of Letters Patent No. 253,005, dated January 31, 1882.

Application filed December 6, 1881. (Model.)

To all whom t may concern:

Be it known that l, JOHN K. CLARK, a citizen ofthe United States, residing at Butthlo, in the county of Erie and State of New York, have invented new and useful Improvements in Sash-Cord Guides, ot' which the following is a specication.

This invention relates to that class of sashcord guides in which the casing for the pulley .or sheave is provided at each end with a projection or spur adapted to pierce or forccitself into the top and bottom walls of the mortise when the casing is driven into position.

Heretofore the casings of this class of sashcord guides have been bisected or composed of two vertical sections, each portion having at the topand bottom a projection or spur, so that when the two sections are united together the said top and bottom projections or spurs are adjacent to each other, respectively, and can penetrate the wood when the easing is driven or forced into the mortise. This construction of sash-cord guides possesses one desirable feature-namely, the end projections or spurs adapted toenterthewoodas thecasingis driven horizontally into the mortise, thereby enabling theusualfastening-screwstobedispensedwith; butitis open to such objections as have rendered its general manufacture and sale impracticable, because the casin g, being cast in two parts or sections, with recesses to receive the journal cast on the pulley or sheave, the parts must be shipped or delivered to the trade in separated pieces or sections, which is very objectionable and in fact has rendered the general introduction of this form of sash-cord guide impossible, because the construction increases the labor of the carpenter or manufacturer of the windowframes, and, further, materially increases the cost of production. It has been attempted to avoid the shipping or -delivery of this form of devices to the trade in sections byriveting the two sections of the casin g together when manufactured; but this so greatly increases their cost as to render such mpracticable.

The object of my invention is to avoid the objections above stated, and to provide a comparatively cheap, but strong, durable, and et'- ficientsash-cord guide which can be delivered to the consumer complete and adapted to be placed in position without further manipulation or labor, and without the necessity ot' employing screws to secure them in place.

rllo these ends my invention consists in a sash-cord guide composed of a easing castin a single piece, with end projections or ears and rearwardly-extending webs or tlanges joined to and supporting said projections or ears, in combination with an axle or journal-pin eX- tending through and supporting` a pulley or sheave arranged to revolve within said casing.

In the accompanying drawings, Figure l is aperspectivc view of my improved sash cord guide; Fig. 2, a side elevation ot' the saine in position in a window-frame; Fig. 3, an edge view from the rear ot` the casing; and Fig'.'4, detached perspective views of the casing, the pulley or sheave, and the axle or journal-pin.

In the drawings, the letter A indicates the easing of the sash-cord guide, which is cast in one piece, with rounded ends t a, projecting ears b b, and webs or tlanges c c, which extend longitudinallyin a rearward direction from the rear side of the ears b b,and attached thereto in the process of moldingor casting'. The tace of the casing is only the width thereof', being formed without the usual rims or ilanges at the sides. rlhe casingis provided with apertures d in its side, through which anda central perforation, c,in the pulley or sheave B, passes the axle orjournal-pinj, the ends ot' the latter being upset or riveted from the exterior of the case to tix it in position, so that the pulley revolves thereon. The Webs or flanges c extend to the rear edge, g, of the easing, and are tapered rearwardly, and are beveled or sharpened at their outer longitudinal edges, as at IL, while their rear corners are rounded and beveled or sharpened, as at t, all for the purpose of permitting said webs or anges to readily pierce or penetrate the solid Wood at the top and bottom of the mortise when the casing is driven or forced horizontally into the same, which construction of webs or tlan ges is oi`con siderable importance, in that it greatly increases the facility and convenience with which the casings can be applied to their proper position. It will be observed, from the contour of the webs or flanges and end projections or ears, that the casing cast in one piece therewith can be readily withdrawn from the sand after the ends of the casing are substantially or identically the counterpart of each other, and therefore the saine is reversible and can be quickly applied in position, no matter which end is at the top, and, as Will be obvious, this is of importance in savingtiine and in the convenience with which the casings can beaccurately driven or forced into position.

The casing having been castin one piece with the imperf'orate end projections or ears, b b, rounded ends a, and square webs or anges c c, abutting against and forming a part of` the said ears or projections, as herein before described, the pulley or sheave B is placed within the easing, and the axle or journal-pin f passed through the apertures d and through the pulley or sheave, after which its exterior ends are upsetor riveted against the side walls of' the casing, after which the sash'cord guide is ready for the trade, and is capable of' being applied to window-frames without further manipulation and without the necessity of' employing any fastening-screws whatever.

To apply the improved sash-cord guide the inortise in the window-frame is formed in any suitable manner the exact lengt-h and Width of the casing proper, and at each end thereof' a seat is formed of the shape and depth of the end projections or ears, b b, the depth of such seat being, for example, one-eighth of an inch if the projections or ears be of that thickness. The casing is then inserted in the inortise, and di iven or forced horizontally into the same by the employment of a hammer or other in strument, whereby the end webs or flanges, through their beveled edges, are caused to pierce or penetrate the solid wood at the top and bottom of the mortise until the projections or ears are tightly seated in their respective seats and the face of the casing flush with the plane of the window-frame. The casing will, through the instrumentality of' the webs or anges, be firmly and substantially confined in position without the aid of other fastening devices, such as screws.

The Webs or flanges of' the casing being at tached to or forming part of the end projections or ears, as hereinbefore set forth, sub serve another function, in that they strengthen, support, and sustain the said projections or ears, and thereby avoid the liability of the saine or the casing heilig broken When struck forcibly with a hammer to drive or force the casing into position.

I am aware that the casing of a'sash-eord guide has been cast in one piece; but as heretofore constructed it has been necessary to employ a screw or screws to secure it in position, and I do not therefore Wish to be understood asv broadly claiming a casing for a pulley or sheave cast in one piece; but

What I do claim as my invention is- A sash-cord guide composed of' a casing cast in a single piece, With end projections or ears, and rearwardly-extending Webs or flanges supporting said projections or ears, in combina tion with anaxle or journal-pin supported by the side walls of' the casing, and a pulley or sheave arranged on said axle or journal-pin, substantially as and for the purposes set forth.

In testimony whereof' I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN K.l CLARK.

Witnesses JOHN It. BENTLEY, E. M. Mix.

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