US2021106A

US2021106A - Window shade

Info

Publication number: US2021106A
Application number: US758289A
Authority: US
Inventors: Samuel J Johnson
Original assignee: Clopay Corp
Current assignee: Clopay Corp
Priority date: 1934-12-19
Filing date: 1934-12-19
Publication date: 1935-11-12
Anticipated expiration: 1952-11-12

Description

Nov. 12, 193 5. s. J JOHNSON WINDOW SHADE Filed Dec. 19, 1934 ATTO RN EY.1

Patented Nov. 12, 1935 2,021,106

UNITED STATES PATENT OFFICE WINDOW SHADE Samuel J. Johnson, Cincinnati, Ohio, assignor to Clopay Corporation, Cincinnati, Ohio, a corporation of Maryland Application December 19, 1934, Serial No. 758,289

2 Claims. (Cl. 156-10) This invention relates to improvements in winrotative trunnion fixture i i mounted against rodow shades, particularly that type of shade which tation in the other bracket II and carrying a is operated on a roller. spring and suitable ratchet mechanism (not The present improvement is primarily conshown) in conjunction with the roller, whereby 5 cerned with and directed to paper window shades. as the shade is pul d down the p ng is Wound 5 It is natural of course that paper is not as strong up and return tension placed thereon for causing as cloth and its edges are more apt to tear. the shade to automatically raise when the ratchet Accordingly, it is an object of the present invenis released. tion to provide an improved paper window shade The improvement may be advantageously apwhich incorporates an edge construction which plied to a crepe paper window shade of the charl0 considerably reinforces and strengthens the acter now in commercial use. Although the crepe edges, whereby there is less opportunity for tearpaper used in the fabrication of these shades has ing and splitting, and whereby there is less tendits grain d sp in Darticlllar manner. at ency for the shade to stretch, the occurrence of transversely or at right angles with the roller as which would cause it to buckle and hang undisclosed in this applicants Patent No. 1,807,533, 15 evenly. issued May 26, 1 931, and minute creasing or em- Other objects and further advantages will be bossing is applied to the paper transversely to more fully apparent from a description of the the grain, there still may be a tendency for the accompanying drawing, in which: edge of the paper to curl or to split as the user Figure l is a general view showing the imexerts pressure thereon for the purpose of low- 20 proved window shade mounted in relation to a ering the shade. To lessen the possibility of window. tearing occurring at the edges, the longitudinal Figure 2 is a fragmentary perspective view of side edges are reinforced by an indentation or the shade and roller, detailing the edge construcsingle corrugation I 6 immediately adjacent to the tion of this invention. edge. It has been found that these indentations 25 Referring to the drawing, the roller is indiapplied along the edges as they are tend to lessen cated at 5 and the sheet of paper constituting buckling, curling and tearing, also having the the shade at 6. The length of paper has a hem eifect of stiffening the edge and in this way tendformed at its lower end, in which hem a stiffening to keep it straight.

ing cross piece 8 is disposed. This cross piece Having described my invention, I claim: 30. provides definite body to the lower end of the 1. As a new article of manufacture, a window shade and provides a rigid element to which shade, comprising a length of paper having at the manipulating means may be efiiciently atone end thereof a manipulating means and havtached. ing its other end adapted to be attached to a The conventional manipulating means is disroller, said length of paper having a corrugation 35 closed consisting of a cord 9 attached centrally extending along each of its longitudinal side of the lower edge of the shade through the edges for increased strength and stiffness.

stiffening cross piece and carrying a ring I0 at 2. As a new article of manufacture, a window its lower end. The shade is attached to the shade, comprising,alength of crepe paper includroller 5, the roller being mounted in brackets I I ing a manipulating means at one end and having 40 and I2 fixed to the upper part of the window its other end adapted to be attached to a roller, frame I3. said length of paper having each of its longitu- The roller includes trunnions I4 and I5 mountdinal side edge margins strengthened by a cored in the respective brackets. The shade roller rugation extending along the edge immediately disclosed may be of any conventional character, adjacent thereto. 45

and therefore includes a rotating trunnion I5 SAMUEL J. JOHNSON. rotatably fixed in the bracket I2 and a non