US581273A - Sash-cord guide - Google Patents

Description

(N6 Modem G. P. DOEBLER.

SASH 00m) GUIDE.

No. 581,273. Patented Apr. 27, 1897.

Wit n asses Inventor: 6. flan/a fioebler.

UNITED STATES PATENT FFICE,

CHARLES F. DOEBLER, OF HARTFORD, CONNECTICUT.

SASHI-CORD GUIDE.

SPECIFICATION forming part of Letters Patent No. 581 ,2'73, dated April 27, 1897.

Application filed July 11, 1896. Serial No. 598,785. (No modelr) To all whom it may concern.-

Be it known that I, CHARLES F. DOEBLER, a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Sash Cord Guides, of which the following is a specification.

This invention relates to sash-cord guides, and more particularly to the pulley-casings thereof; and the object ofthe invention is to provide an improved casing which can be quickly and easily constructed and will be comparatively inexpensive in its manufacture.

In the drawings accompanying and forming part of this specification, Figure 1 is a side view of this improved sash-cord guide. Fig. 2 is a front View thereof. Fig. 3 is a rear view thereof. Fig. 4 is a longitudinal sectional view taken in line a a, Fig. 3. Fig. 5 is an end View of the deviceshown in Fig. 1, looking downward; and Fig. 6 is an end View of said device, looking upward. Fig. 7 is a View of the face-plate detached. Fig. 8 is an under side view of the casing detached. Fig. 9 is a plan view of a blank from which the casing member shown in Figs. 1 to Sis formed.

Similar characters designate like parts in all the figures of the drawings.

Owing to the necessity of constructing buildings and tenements with the least possible expense, it is essential that the hardware used in the structures, and which forms an important part in the cost thereof, be manufactured as inexpensively as possible, and as sash-cord guides form one of the main items of this class of material the ingenuity of inventors has been taxed to obtain an article of this character which can be produced with the least possible cost commensurate with strength and durability, and in order to accomplish this object I have provided an improved sash-cord casing which, owing to its peculiar construction, can be manufactured at an extremely low cost and which will also be durable and efficient in use. It will be understood, however, that this improved construction of pulley-casing might be used in other devices and for other purposes than as a sash-cord guide, if desired. In the preferred form thereof herein shown and described the casing comprises a face-plate 10, of any suitable and desired construction, having a pulley-opening 11 and apertures 10 for the reception of the casing-member-fastening devices.

The casin g member 12, which is an integral structure in its preferred form, is struck from sheet metal and has the usual pulley-opening 13, and in one construction thereof the casing-blank is bent longitudinally in line with such opening 13 to thereby form its two parallel walls or sides 14, connected at one end by a transverse inwardly extending flange or bridge 15, integral with the two sides, and united at the other end by a substantially similar transverse inwardly-extending flange. or bridge 16, likewise integral with such sides, one of said bridges, as 16, having a curved outer edge 17. These bridges when in position on the face-plate extend across and form the ends of the pulley-opening 13. The two ends 18 of the parallel sides 14 are then bent to have their free edges contiguous and thereby form the curved closed end 19 of the pulley-casing.

When window sashes having weighted ropes are employed, there is usually a slight lateral movement of the weight and rope in the guideway of the frame, which is sufficient to permit a frictional engagement of the rope with the edge of the pulley-casing should the same project adjacent to the periphery of the pulley, and thereby sever the cord in a short time. In order to overcome this disadvantage, the pulley-casing in my construction is cut away, as at 19, preferably from the axial line of the pulley to the under side of the periphery thereof, to thereby have the edge 19 of the curved end 19 of the casing-member as far as possible from the rope, and thus prevent all possible frictional contact therewith, and whereby also the casing-walls will be somewhat larger at that end thereof which is adjacent to the cord-supporting surface of the pulley, so that the cord will be prevented from slipping laterally off the wheel when the device is in use. As one means of securing this form of casing to the face-plate the bridges 15 and 16 are provided with apertures 20 for the reception of suitable, fastening devices, such as rivets 20, which enter suitable apertures 21 in the face-plate. In this form of casing member the curved end 19 thereof is necessarily divided in order to permit the longitudinal bending of the casing-walls and the proper shaping of the device.

The blank A, Fig. 9, of which this particular construction of easing member is formed, in its unbent condition comprises two side members aand I), each of which substantially forms an ogee curve at its free longitudinal edge, whereby when bent into position to form the casing member one part of such side 1n embers will be of greater width than the other part thereof. Centrally of these side members a and b is an elongated slot 0, the ends of which are formed by two transversely-extending members (1 and d and by means of which the two side members a and b are connected at their inner longitudinal edges, one of which members, as cl, preferably has a curved outer edge c, said member cl being formed slightlyback from the ends of the side members CL and 1), whereby when said side members are bent into position such ends can be turned around the curved edge of the member 61'.

By having the bridges l5 and 16 on the inside of the ends not only can the device be constructed more quickly and with less expense, but the necessity of forming a deep recess in the window-frame for the reception of the ends 40 of the faceplate, as would be the case if the fastening means extended outside of the ends of the casing, is obviated.

In order to strengthen the casing member, a portion 36 of each of the side walls is depressed, which depressed portion also constitutes a means for preventing lateral movement of the pulley 37 when in position on its axle 38.

Having described my invention, I claim- 1. A p-ulleycasing comprising a face-plate having a pulley-opening and an integral casing member, said member comprising two parallel sides having a series of flanges forming bridges intermediate of its sides and adapted to rest on the face-plate at the ends of said pulley-0pening; one of said flanges a curved end wall, and means extending through said flanges for securing the casing member to the face-plate.

2. A pulley-casin g comprising a face-plate having a pulley-opening and an integral casing member, said member having two parallel sides cutaway to form an enlarged end at the cord-supporting part of the pulley, with a series of flanges forming bridges intermediate its sides and adapted to rest on the faceplate at the ends of said pulley-opening, one of said flanges having an outer edge around which the ends of the casing member are bent to form an end wall; in combination with a pulley mounted between the sides of said casing, substantially as and for the purpose specified.

3. A pulley-casing comprising a face-plate having a pulley-openin g and an integral casing member having two parallel sides provided with transversely-extending bridges or flanges integral with the sides and adapted to rest on the face-plate at the ends of said pulley-opening and be secured thereto by fastening devices extending through said bridges or flanges, one of said flanges havin g a curved, outer edge around which the ends of the casing member are bent to form a curved end wall, and said casing member-having its sides cut away adjacent to the curved end thereof to form an enlarged end adjacent to the cordsupporting surface of the pulley.

4:. A blank comprising two members of greater width at one part than at the other part thereof and having an elongated slot intermediate thereof and joined at their inner longitudinal edges at the ends of said slot by cross members, one of which has an outer,

curved edge.

CHARLES F. DOEBLER. W'itnesses:

FRED. J. DOLE, HENRY BIssELL.

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