US1415136A - Lamp shade and process of making - Google Patents

Description

A. ZISKA, JR. LAMP SHADE AND PROCESS OF MAKING.

narucmon FILED JULY 15. 1921.

1 ,41 5,1 36, Patented May 9, 1922.

INVENTIOR.

A TTORNEYS.

T 0 all whom it may concern:

pair stares ADAM ZISKA, JR., OF-IVIILWAUKEE. WISCONSIN, ASSIGNOR T0 ononon w. ZISKA, or

CHICAGO. ILLINOIS.

LAMP SHADE AND PEGCESS VIEJLKIEG- Specification of Letters Patent.

Patented Inlay 9, 1922.

A plication filed July 15, 1921. Serial No. 485,076.

Be lb known that l, ADAM ZISKA, 512, a citizen oi the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Lamp Shades and Processes of Making, of which the following is specification.

This invention relates to frames for lamp shades and to the )iOCGSS oi maliing such frames.

@bjects of this invention are to provide a frame for a lamp shade in which the various members "forming the frame are so organized that they it into each other; to provide a frame in which the various members may be readily soldered or otherwise secured with a minimum amount of material and with scarcely any exposure oi the solder of other material after the joint is made, thereby producing a neat attractive frame free trom bulges and unsightly or harmful protuberances; and to proiicc a frame or a lamp shade which is extremely rigid and and which may be cheaply and rapidly manufactured. 1

Further objects are to provide a method ior making lamp shade frame which may be practiced to rapidlyproduce the frames; which eiiects a saving in the material from which the frames are made; and which minimizes a number of operations necessary in the production oi a finished lamp shade "frame.

An embodiment of the invention is shown in the accompanying drawings, in which- Figure l is a side elevation, partly in section, oil a completed lamp shade frame.

Figure 2 is a side view, partly in section, of the upper ring and central hub or supporting piece.

Figure 3 is fragmentary view of an indeterminate length of rod showing the manner in which successive members of the frame may he cut from such rod without waste.

Figure 4 is a fragmentary sectional view on line Arr-41 of Figure 2, on an enlarged scale.

in practicin this invention, the method followed in the production of these lamp shades contemplates first, the productionoi' a central hub member provided with a plurality of radially extending round holes. A series oi hexagonal or other polygonal rods with a concave end formed upon one i .a convex end to fit within the concave end of the succeeding rod, thereby avoiding waste. 'lhereaiter, the convex ends the hexagonal rods are forced into the round holes in the hub member, thereby oaui corners to out into the material or to force or swage such material outwardly, thereby binding the corners and rigidly securing the rods in position. Thereafter, the radially extending rods may be bent at an a le to the plane of the hub or may be left extending outwardly in their initial state. .si ring is then former. of round stock and such. ring may have its ends similarly formed, that is, concave and convex. This ring is fitted into the concave ends or sock '5- portions oi the radial rods and is soldereo into place. Qther rings, similarly formed and with spacing members having concave ends, are then positioned and soldered and complete the frame.

lJpon reference to Figure 1, it will be seen that the shade comprises a central hub member '1, which may have a central aperture 2 iii desired. and. which has a plurality of round radial extending holes'S. I A plurality of hexagonal rods 4. are forced into these ro nd openings and, as may be seen from erence to Figure i, cause a distortion or he metal forming the walls of these openings and allow the corners of the hexagonal rod to cut into such surrounding metal. It will be seen that this manner of securing the hexagonal or radial rods insures a firm union which is secure against withdrawal oi the rods or rotation of such rods. It will also be noted that the rounded inner end of these radial rods aids in entering such rods within the openings 3.

T he structure shown in Figure 3 illustrates the manner in. which successive rods emay be cut from an indeterminate length of stock. The stock is fed through a suitable machine and a cutting or punching knife, having a rounded punch and a convex die, cuts the rod into suitable lengths and simultaneously forms the convex and concave ends without wasting of material. A similar manner of forming these convex and concave ends may be employed for the rings 5 and 6 of the shade, such joints being shownat 7 and 8 respectively. After the radial rods are positioned within the hub they may be, if desired, given a slight angular bend by simultaneously subjecting all the rods to suitably directed pressure, it the type of shade shown in Figure l is desired. It may happen however, that top frame is desired. in this case the central hub and radial rods are'leit in the position shown in Figure The ring is then placed in position and bears against the concave sockets or outer ends of the rods Thereafter, these joints between the ring 5 and the rod 4;, together with the joints 7, are soldered. in a similar manner the ring 6 is formed, suitable sp ing struts 9 being pr rided between the 5 and 6 and being formed with concave sockets at both ends. The joints between the struts 9 and the rings 5 and G, as Well asthe joint 8, are

now soldered.

..t is to be noted, that by punching or cutting the rods in the peculiar manner illustrated, that the rings contact with such rods throughout their entire juxtaposed areas and therefore a minimum amount of solder is usec and a maximum strength of joint results as distinguished from the joints which are usually made in frames of this type, such 7 joints being; Weak and bulky and otherwise unsatisfactory.

By making lamp shade frames in the man:

nor des "ibed, it is'possible to rapidly assemble. the parts and, solder the joints with a 1 iniinum expenditure ot time and with a minimum amount oi handling. The resulting shade is extremely rigid and strong and is devoid of objectionable protuberances or bulging joints. lt is also found that these frames may be made at a yery much reduced cost as compared with the trames as formerly. made.

I claim l. The method of making a lamp shade frame, which method comprises forming a central hub with plurality of round openingjs. inserting plurality of radially ,ex-'

tending rods of polygonal cross section into said openings and forming concavities in the ends of saidrods, forming a spring ring, and thereafter positioning said ring about the extremities 01 said rod by springing said ring and allowing it to snap into the concavities or said rods.

A lamp shade frame comprising a hub portion having a plurality of substantiallyround openings, a plurality of radialextending polygonal rods forced into said openings, and a ring joined to the outer ends of said radial rods.

3. A lamp shade frame comprising a substantially central member, a plurality of outwardly extending rods ha ing sockets formed in their outer ends, and a ring. en

circling said rods and socketed Within the V 5. A lamp shade trans comprising a hub,

a plurality of outwardly extending radial members having concavitiesformed in their ends, a spring ring surrounding said rods and seated Within the outer concavities thereof. whereby themembers of said frame are inherently retained in their assembled position. ADAM ZISKA, JR,

-":-. A lamp shade frame comprising a p lu-

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