US425940A

US425940A - Sash-cord guide

Info

Publication number: US425940A
Authority: US
Publication date: 1890-04-15
Anticipated expiration: 1907-04-15

Description

(No Model.)

P. W. HOEFER. I V SASH 00m) GUIDE.

No. 425,940. Patented Apr. 15, 1890.

WWW/a as ea m m %6:4/ Mama UNITED STATES PATENT OFFICE.

FREDERICK \V. HOEFER, OF FREEPORT, ILLINOIS.

, SASH-CORD GUIDE.

SPECIFICATION forming part of Letters Patent No. 425,940, dated April 15, 1890.

Application filed July 6, 1889- Serial No. 316,674. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK W. I-IOEEER,

a resident of Freeport, in the county of Ste phenson and State of Illinois, have invented certain new and useful Improvements in Sash- Pulleys; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in sash-pulleys of that class in which the sheave is mounted in a two-part shell, the object of the invention being to provide a cheap, simple, and effective means for fastening together the two parts of the shell.

The invention is fully described and explained in this specification and shown in the accompanying drawings, in which Figure 1 is a side elevation of a complete sash-pulley embodying my invention. Fig. 2 is a transverse section of the shell through the line as as, Fig. 1, the view being in the direction indicated by the arrow at in said figure, and showing the inner surface of one end of the two-part shell. Fig. 3 is an external view of the opposite end of the shell, looking in the direction indicated by the arrow a in Fig. 1. Fig. 4 is a transverse section of the shell through the broken line y y, Fig. 1, the view being in the direction indicated by the arrow a in said figure.

In the views, A A are the two parts of a shell adapted to receive a grooved sheave 13, each of the parts of the shell being formed with a cylindrical hole or bearing a, and the two bearings being adapted to receive gudgeons 1), formed on the opposite faces of the sheave. The meeting edges of the two parts ofthe shell abut against each other, except at points where they are provided with tongues for fastening the two parts together, the obj ect of such abuttal of the edges being to prevent the collapse of the shell by the fallingtogether of its parts. The two parts of the. shell are held together at one end by means of a tongue T, formed on the part A and extending from within into an opening O in the part A and partly around a rod R at the lower margin of said opening. The part A of the shell has at its opposite end a second opening 0, at whose lower margin is a rod R, formed integrally with the part A of the shell and constituting a portion of its edge, and on the rod R is formed an inwardly-extending lip II. On the margin of the part A of the shell and at the same end of the shell as the lip L is formed a second tongue T, so placed as not to register with or directly overlap the lip, the form of the tongue and lip in cross-section being such, however, that if they were extended laterally or were so placed as to register, the tongue would overlap the lip in the manner indicated in Fig. 4. As the tongue and lip T L do not register, the two parts of the shell may be readily brought into working relation with reference to each other by inserting the tongue T in its place in the opening 0 and bringing the opposite edges of the two parts of the shell together, the contact of the meeting edges of the two parts being attained without any springing of the metal whatever. The form and relation of the tongue and lip T L are such that when the meeting edges of the parts of the shell are in contact a pin P of suitable size may be inserted in the position shown in full lines in Figs; 1 andl: and in dotted lines in Figs. 2 and 3, the pin when thus inserted being adapted to lock the two parts of theshell together at one end,and thus complete the fastening together of the parts. This pin, if desired, may be a piece of wire of suitable length; but I think it preferable to use a small wire nail provided at one end with a head p and at the other with a taper point p. The friction of the parts is sufficient to prevent accidental displacement or dropping out of the nail; but a notch N, Fig. 2, may be formed in the margin of the shell in such a position as to receive the outwardly-bent point of the nail in the manner indicated in dotted lines The bending of the point of the v in Fig. 1. nail involves no additional labor, as the two parts of the shell may be placed upon a mandrel of such form that the point of the nail may be bent outward by the mere operation of driving it into place.

I am aware that it has been proposed to form a two-part pulley-shell formed at both ends with tongues and openings adapted to engage and hold the parts of the shell together,the tongue and the corresponding opening at one end of the shell being connected by inserting the tongue in the opening, and the tongue and corresponding opening at the opposite end of the shell being brought into engagement by forcing them together, the spring of the metal being relied upon to permit the engagement and prevent the accidental disengagement of the parts so forced together. In practice, however, this method is objectionable, since the connecting parts must be made extremely light in order to have the necessary elasticity, and even under the most favorable circumstances the springing of the parts together is accompanied by a considerable amount of breakage. The means illustrated and described herein remove this objection entirely, since the interlocking parts may evidently be made of such weight as to afford the necessary strength, and the parts may be connected without any liability of breakage.

It is evident that the forms of the interlocking parts may be varied from those shown in the drawings, and that, if desired, the looking of the parts at both ends of the shell may be efiected by the insertion of the pin or rod; but the forms illustrated are perfectly practicable and easy of manufacture, and it is clearly cheaper to interlock the parts directly at one end in the manner illustrated and described than to use a locking-pin at each end of the shell.

Having now described and explained my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a sash-pulley shell, the combination of two parts making up the shell, the meeting edges of said parts at one end of the shelLbeing provided with overlapping projections adapted to receive a locking-pin for fastening together such meeting edges, substantially as and for the purpose setforth- 2. In a sash-pulley shell, the combination, with the part A, formed with openings 0 0, rod R, and lip L, and the partA', provided with the tongues T T, of the locking-pin P, interposed between the tongue T and the lip L' and preventing the separation of the meeting edges on which said tongue and lip are formed, substantially as and for the purpose set forth. In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FREDERICK W. HOEFER. WVitnesses:

R. H. WILES, J. A. GRAIN.