US1329992A - Window-shade holder - Google Patents

Description

A. R. NELSON AND I. KNOCH.

w|Noow SHADE HOLDER; APPLICATION FILED 1UNE27. I9I7- 1,329,992. Patented Feb. 3,1920.

BY (zkt,

ANTON R. NELSON AND ISAAC KNOCI-I, OF SUSANVILLE, CALIFORNIA.

WINDOW-SHADE HOLDER.

spammen of tettersratent. r Patented Feng, 192Q Application mea June 27, 19177. serial No. 177,272.

T0 allwhom t may concern.' v

Beit known that we, ANTON R. NELSON and ISAAC KNOCH, citizens of the United States, residing in Susanville, inthe State of California, have invented new and useful Improvements in Vindow-Shade Rollers, of which the following is a specification.

The present invention relates to improvements in the rollers of window shades, the object of the invention being to provide a roller which shall be simple and inexpensive in construction, noiseless in operation, and dust proof, and which can readily be tted to windows of different widths.

In the accompanying drawing, Figure l is a longitudinal sectional view of the improved roller; F ig. 2 is an enlarged longitudinal sectional view of a portion thereof; Figs. 3, 4, 5, 6, are transverse sections on the lines 3 3, 4-4, 5- 5, 646, respectively of Fig. 2; Fig. 7.is'a broken side view of a modified form of the invention; Fig. 8 isa detail Yside .view ofV a part used in said modified form. Referring tothe drawing,1indicates the hollow `tube of our improved roller. A great improvement 'over prior shade rollers consists in making this lhollow tube of paper, wound helically 1n three or-four plies, asr

may be found desirable, and cemented together. The paper tube has the advantage of withstanding rough usa-ge in handling and can be dented or marred without throwing the same out of alinement and is cheaper 'than either wood or tin, which are commonly used.

In the ends of said tube are driven, with a tight fit, plugs 2, 3, of wood, each having a central hole 4 to form a bearing for a metal shaft. Likewise in the mediate portion of the tube there are driven, with a tight fit, wooden plugs 5, 6. A metal shaft `7, extends through holes in the plugs 3 and 6, and has an annular groove 8 formed around its outer terminal portion to fit in the usual rounded hole in the supporting Vbracket at the adjacent end of the roller. The above construction permits of the length of the roller being readily varied to suit the width of a window. For it is only necessary to shorten the roller at the end in which is the plug 3, and also the shaft'7, and to again iit the plug 3 in the end of the roller. The plug 5 has a central bearing for the inner end of a metal shaft 9, in alinement with the shaft 7, the shaft 9 also extending through the bearing end, as is common with shade rollers, to fit in the usual rectangular recess in the bracket at the other end of the roller. A tube 26 fits losely around the inner ends of the shafts Between the plugs 2 and extends a helical spring 10, its ends being coiled, one around an inward extension 11, reduced in diameter, of the plug 2, and the other around a wooden sleeve l2, pinned, as at 18, to the shaft. 9. The extreme terminal coils of the helical spring are received in grooves 14, 15, in the extension 11v andV sleeve 12 respectively, while the adjacent coils fit around said extension and sleeve. The spring 10 is not, however, positively secured to saidl extension and sleeve, since it has been found to be suiicicntly secured if coiled around the `in the plug 2 and having a rectangular Outer same with a fairly tight fit, because any roy tary motion of the plug 2 and the sleeve 12 relative to the spring, which would tend to wind up the spring, operates by friction to contract the ends of the spring upon the extension and sleeve so that said ends grip said extension and sleeve tightly. ment is very advantageous, as tending to .sinjiplicity' and economy of construction,

-since it avoids the expenditure of material and labor required for positively fastening the ends of the spring upon the extension and sleeve. y

Uur invention also comprises an improved. formof locking device for loc-king the roller in any position in which it is brought to rest. rlhe plug 5 is formed, near its end next the sleeve 12, with a deep circumferential groove 16, andk extending longitudinally from said groove 16 to the Vother end ofthe plug are diametrically opposite grooves 17 having metallic linings 18, the depths of said longitudinal grooves 17 being slightly less than that of the circumferential groove 16. In said longitudinal grooves are dogs 19, resembling small, round nailswith their This arrangepointed ends cutoff. Their heads 2O arespring, one or the other of said dogs is of the operator controlling the further up-` Ward movement of the shade, whereuponv one or the other of said dogs 19 drops and abut'sagainst the shoulder 21, and said roller is again locked against a movement tending to unwind the spring. Figs. 7 and 8 illustrate a modified form of mounting of a roller for'use with a Window shade Which isV adapted to be given a movement of translation or rotation, leach independently of the other. In' this form of the invention the shaft 9 is bent up at its outer endA and formed into a hook 25, to which hook and to the' outer end of the shaft 7 can ybe attached cords running around pulleys and carrying counterweights at the opposite sides ofthe Window in the manner explained in our application for Letters Patent ofthe UnitedStates, iiled May 1,

1916, Serial No. 94,627. ,Also in this form of the invention the disk 22 has tWo shoulders 21instead of one, and thus serves to lock the roller, Whenit has been brought to rest, against a slow movement in either direction. t f

The yadvantages'of our invention are :n 1. Simplicity and cheapness of construction. -The roller itself is made of paper, and can beproduced in large numbers by machinery at a .comparatively small expense.

The plugs are vof Wood driven tightly into4 the roller. Thus it Will be seen that there need be no metal parts except the' shafts, spring, dogs'and disk.

2. The shalt bearings are long, smooth and noiseless. The shade in being raised or lowered does not make suflicient noise to be heard by a person in the same room.

The rol ervcan operatefor a very long timeV Without care or attention, since it is dust'proof, both ends of the-roller being` plugged and the holes in the plug being filled'rbv the shafts therein.

4. The roller is locked Vand unlockedl very easily, because the dogs are very 'sensitive in their action, and the dogs have the further advantage that the ratchet mechanism can be mounted insideV a very small tube.

fThe 4method of fastening the ends of said shoulder of the disk. t Y Y Y Y, Y

3.111 means for controlling the rotation great economy inV` contherein Va circumferential groove, and a groove leading longitudinally from said circumferential groove to the'end of vthe device nearer to the disk, and a dogy in said latterf groove having a head inthe circunr ferential groove, its end remote from said head projecting from the former groove and adapted to engage said shoulder of the disk.

2.*Gravity mechanism for locking a device rotatable about a shaft.y comprising a disk secured to the shaft and having a shoulder, a device loosely surrounding'the shaft adjacent to said disk and having therein a circumferential groove, and grooves leading longitudinally Afrom said circumferential grooveto the end of the 'device nearer to the disk, anddogs in saidV latter grooves *having Yends remote from said heads projecting from the former `Qrooves and adapted to engage vshaft adjacent to said disk and having heads in the circuinferential groove, their l of a tube around a Vshaft therein, devices surrounding the shaft and attached respectively thereto and to the tube, and a coiled spring aroundthe shaft and both devices, said devices having circumferential grooves, each terminal coil of the spring Vbeing contracted and received. Within one y of said grooves, and the coils adjacent tofsaid ter-l Yminal coils surrounding said devices vvith a close it and Withoutjbeing stretched.

4. A shade roller con'iprising .a rigidtube, a stationary" shaft extending longitudinally Within the' tube, and-Woodenbearings-.secured to and Within the tube and fitting snugly around the shaft.

5. A Window shade roller'comprising a tube consisting' of a` plurality of Ycoaxial paper. helices, the edges of adjacent turns of Veach helix abutting against each other Without overlapping, and cement securing the several helices together, bearings in the endsV of the'tube, vand a shaft Vpassing through said bearings.

ANTON R. NELSON.

f VVISAAC 'KNOCH-

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