US1240579A - Shade-roller. - Google Patents

Description

C. W. KIRSCH.

SHADE ROLLER.

APPLICATION FILED MAY3I. 1912.

Patented Sept. 18, 1917.

2 SHEETS-SHEET 1.

C. W. KIRSCH.

SHADE ROLLER.

APPLICATION FILED MAY31. 1912.

1 240,579 Patented Sept. 18, 1917.

2 SHEETS-SHEET 2.

J/QflMZAM I QW M 6 (41 CHARLES W. KIRSCH, OF STUBGIS, MICHIGAN.

SHADE-ROLLER.

Specification of Letters Patent.

Patented Sept. 18, 1917.

Application filed May 31. 1912. Serial No. 700,650.

others skilled in the art to which it apper tains to make and use the same.

This invention has for its object to provide an improved shade roller, and consists in the features of construction and combinations of parts hereinafter fully described and particularly claimed.

In the accompanying drawings illustrating a suitable embodiment of the invention:

Figure -1- is a view in elevation partly broken away of a window equipped with a shade roller embodying my invention.

Fig. -2- is a vertical transverse section through the window casing showing the shade roller in end elevation and the hanger therefor in side elevation.

Fig. 3-- is a central longitudinal section of the shade roller, the hangers therefor being shown in horizontal section.

Fig. 4 is a fragmentary central longitudinal section of one end of the roller showing the ratchet and dogs for preventing the turning of the shade roller on its axis by its engaging spring.

Fig. 5 is a detail transverse section on the line 55 of Fig. t-.

Fig. 6 is a detail transverse section of the shade roller on the line 6-6 of Fig. 3-.

Fig. 7- is a detail perspective view of the member carrying the ratchet.

Fig. 8 is a fragmentary detail longitudinal section of a member engaged with one end of the spring of the roller and with the shade roller for preventing rotation of said end of said spring relatively to said roller.

Fig. --9 is a detail perspective view of the member shown in Fig. 8.

My invention has for its main object to provide a shade roller which is very simple, efiicient, durable and inexpensive.

The invention consists more particularly in certain details of construction whereby end of a shaft 8 is adapted to project.

new and useful results are obtained as will be hereinafter particularly pointed out.

The said roller comprises a cylindrical member 1 of wood, or the like, which is provided centrally with a longitudinal bore 2 square in cross-section and which may be of any desired length relatively to the roller, preferably, however, being of just suflicient length to accommodate the helical spring 3 of the length necessary to insure enough coils to rotate the roller a sufiicient number of times to wind up about one'and one-half to two times the len th of the window shade mounted thereon. aid roller is provided in one end with a pivot pin 4t which is adapted to be rotatably engaged in the hanger 5 in any usual or well-known manner. Mounted upon the other end of the roller is a cap 6 having a central dished portion 7 provided with a central opening through which lqpe 1e projecting end 9 of said shaft 8 is provided at diametrically opposite points with recesses 10 in which the arms of a hanger 11 engage, said shaft being thus rendered nonrotatable relatively to said hanger 11.

Contiguous to thesaid end portion 9 of said shaft the same is provided with an illtegral ratchet 19. having two teeth disposed at diametrically opposite points as more particularly shown in Fig. 5. The said ratchet 12 is of greater diameter than the central opening in the dished portion 7 and is engaged in the latter and held therein by means of a retaining plate or washer 13 which is driven into the cap 6 or otherwise suitably secured therein. The shaft 8 may be of any desired length relatively to the roller 1 and projects into said central square bore 2 of the latter. Rotatably mounted upon the inner end of said shaft is a flat member or plate 14. preferably made of sheet metal shaped to form a hollow cylindrical shank 15 at oneend thereof in which the inner end of said shaft 8 is received, the body of said member consisting of two opposed flanges between which one end of the spring 3 is adapted to be engaged, as shown in Figs. -3, -6 and 8. The width of the flat portion of said member 14 is preferably greater than the diagonal of the bore 2 so as to be incapable of rotation therein and is thus adapted to hold the end of the spring engaged therewith against rotation in said bore. The said spring 3 is secured at its other end to the other end portion of said shaft 8 by welding or otherwise securing the same thereto.

The dished portion 7 of said cap 6 is extended radially at diametrically opposite points to form two runways for plungers or dogs 16 which are loosely and movably mounted therein and held therein by means of said plate or washer 13. Each of said plungers is adapted to engage in the ratchet 12 of said shaft 8 to prevent rotation thereof relatively to said cap 6 in one direction.

The hangers 5 and 11 consist preferablyof wire hooks and each comprises the shank 17 threaded at one end and terminating at its other end in a U-shaped hook the arms of which extend perpendicular to said shank.

17, the outer or free arm thereof being of greater length than the inner arm thereof and having its nose portion bent toward the inner arm, as at 18, parallel with said shank. The said projection 18 thus formed acts to prevent the ready removal of the shaft 8 and pivot pin 4 from the hanger as will be obvious.

The operation of my said shade roller is not different from that of others in common use; the plungers 16 employed in place of the pivoted dogs afiordinv advantages of greater simplicity and less liability to injury, displacement or binding, than is presented by the pivoted dogs and similar devices heretofore employed in shade rollers.

The present invention also presents advantages in that the spring 3 is coiled over the shaft 8 so that it cannot possibly be wound up to a point at'which any coil thereof may be bent over at a sharp angle and be. thus" broken. -By employing the shaft the tension limit on the spring will be reached when the coils of the latter be cometightly wound around said shaft 8. The latter also presents the advantage of preventing the member 14 from moving toward the cap 6 as the spring is placed under tension by unwinding the shade from the roller and the coils are, therefore, obviously prevented from overlapping each other which is exceedingly disadvantageous.

In my present construction by removing the two tacks or screws securing the cap 6 to the end of the roller the said cap together with the shaft -8 and the parts connected therewith may all be readily removed from the roller for purposes of inspection, repair and replacement.

The whole contrivance is extremely simple, durable and efficient.

The main objects attained are the prevention of excessive tension on the spring, the overlapping of the coils of the latter in placing the same under tension or during expansion thereof as could easily occur if the member 14 should fail to return to its normal position after being moved toward plate 6 as the spring is placed under tension.

I claim as my invention:

1. A shade roller including a roller member having a longitudinal bore of rectangular section, and a shaft comprising two alined sections, one section of said shaft being disposed partly within the bore of the roller and being flattened at its inner end to a width greater than either side dimension of the said rectangular section.

2. A shade roller including a roller member having a longitudinal bore of rectangular section, a tubular shaft projecting into said bore and flattened within said bore to a width substantially equal to the diagonal of said rectangular section, and a coiled spring encircling said shaft and secured at one end to the said flattened portion of the latter.

In testimony whereof I have signed my name in presence of two subscribing wit- M. M. BOYLE, RUDOLPH WM. Loan.

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