US769109A - Sash-pulley. - Google Patents

Description

PATENTED' AUG. 30, 1904. W. N.' PAOKEB. SASH PULLEY.

APPLICATION FILEDAPR. 11, 1903. RENEWED MAY 6, 1904. N0 MODEL.

W lT/VESSE [MAE/Wok UNITED STATES Patented August 30, 1904. I

PATENT OFFICE.

WILLARD N. PAOKER, OF SHELBY, OHIO, ASSIGNOR TO THE SHELBY SPECIALTY COMPANY, OF SHELBY,

ARIZONA TERRITORY.

OHIO, A CORPORATION or SASH-PULLEY'.

SPECIFICATION forming part of Letters Patent NO. 769,109, dated August 30, 1904. v

. Application filed April 11, 1903. Renewed May 6, 1904. Serial No- 206, 64=8. (N model.)

To a whom it may concern:

Be it known that I, WILLARD N. PACKER, a citizen of the United States, residing at Shelby, in the county of Richland and State of Ohio,

' have invented certain new and useful Improvements in Sash-Pulleys, of which the following is a specification.

This invention relatesto sash-cord guides,

and has special reference to guides of this character which are commonly termed sashpulleys. To this end the invention contemplates a cheap, simple, and practical construction of sash-pulley and sash-pulley mounting providing a strong and durable device, while at the same time much lighter and more reliable than the common types of sash-pulleys generally in use. A further and distinctive object of the invention is to provide a form of sash-pulley and sash-pulley mounting wherein the various parts are formed from sheet-metal stamp ings and in which all of the material of the stampings is utilized without waste. In this connection the invention has in view a novel construction of sash-pulley wherein the body may be made of an exceedingly light formation and the punchings therefrom utilized as bearing-rollers to provide an antifrictionroller bearing upon which the pulley is mounted to turn.

With these and many other objects in view, which will more readily appear as the nature of the invention isbetter understood, the same ing from the scope of the invention; but the preferred embodiment of the latter is shown in the accompanying drawings, in which Figure 1 is a perspective view of asashpulley embodying the improvements contemplated by the present invention. Fig. 2 is a side elevation with one of the casing-plates removed and exposing the formation and mounting of the wheel element constituting the pulley proper. Fig. 3 is a vertical sec tional view on the line 3 3 of Fig. 2 with both casing-plates in position. Fig. A is a detail in perspective of the wheel element constituting the pulley proper, a portion of said wheel being shown in blank form to illustrate the method of producing the peripheral sashcord groove.

Like reference-numerals designate corresponding parts throughout the several figures 2 2 of substantially duplicate construction and each provided at its front edge with a matchingisection of the front face-plate 3, having the usual front slot or opening 4 therein, throughwhich the sash-cord passes to its connection with the sash. The said side cheelcplates 2 2 are provided at their upper and lower edges with the inturned curved flange portions 5, registering with each other i at their edges to close in the top and bottom of the casing and to provide for holding the cheek-plates in their matching relation during and after assembling. The same are preferably provided with separably-interlocking elements 6 and 7, respectively.

In the preferable. construction the elements 6 are in the form of short holding-lugs projecting beyond the edges of the flanges 5 of the casing member or plate 2 and registering in the complementary notches or mortises 7 formed in the flanges 5 of the casing member or plate 2*. After the separate casing members are thus matched and interlocked the meeting edges of the front face-plate sections 3 may be brazed together, if it is desired to make a permanently-jointed casing; but ordinarily and preferably the separate members of the casing, as well as the entire pulleymounting, may be held in assembled operative relation through the medium of an axle bolt or pin 8, passed centrally through the casing members or sides.

Each of the cheek-plates 2 and 2 of the pulley is provided with a central depression forming an inwardly-projecting circular bearingboss 9, presenting an inner flat bearing-face 10, cooperating with the opposite parallel bearing-face 10 of the opposite boss 9 to provide for holding the wheel element or pulley proper, 11, in proper operative relation to its roller-bearing support. The said wheel element or pulley proper, 11, is formed from a single disk of sheet metal. This disk in the construction thereof is provided in its peripheral edge with a regular series of short radial slits 12, producing acontinuous series of peripheral tongues 13. The tongues 13, pro duced by the slits 12, are regularly and alternately bent laterally to opposite sides of the disk-body and bear a staggered relation, besides being outwardly divergent to provide in the interval between the opposite circular rows of tongues a peripheral guiding-groove 1 1 for the sash-cord. To make this groove more clearly defined, the tongues 13 may be slightly curved in the direction of their length.

The disk-body of the wheel element 11 is further provided with an enlarged central bearing-opening 15, in which is arranged a circular series of roller-disks 16', constituting a roller-bearing which is supported on a bearing-collar 17 fitted on the axle member 8 within the plane of the disk-body of the wheel element 11. Although not essential for carelement or pulley proper.

bolt or axle member 8 the entire device can be taken apart for purposes of repair or adjustment.

From the foregoing it is thought that the construction and many advantages of the herein-described sash-pulley and pulley-mounting will be readily apparent without further description, and it will also be understood that changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

Having thus described the invention, what is claimed, and desired to be secured by Letters Patent, is

1. In a sash-pulley, the casing having inwardly-projecting bearing members provided. with flat bearing-faces, the wheel element consisting of a disk-bod y having a flat web closely confined between said'bearing-faces and provided with a single central bearing-opening, and a series of flat roller-disks confined fiatwise between said bearing faces and held thereby within the central bearing-opening of said web.

2. In a sash-pulley, the wheel or pulley element consisting of a single disk provided at its edge with radiating slits producing a series of peripheral tongues, said tongues being alternately bent in divergent relation to opposite sides of the plane of the disk-body to produce in the interval therebetwecn an annular guiding-groove.

3. In a sash-pulley, the casing having an inner circular bearing-support, the sheet-metal wheel elementhaving an enlarged central bearing-opening, and a series of punched holes of a diameter substantially the same as the width of the bearing-race about said bearing-support, and the roller-disks, removed from said holes, and arranged in the race to provide a rollerbearing for the wheel or pulley element.

In testimony whereof I affix my signature in presence of two witnesses.

WILLARD N. PACKER.

Witnesses:

S. C. Fisn, JAS. G. VAN HORN.

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