US1466033A - Method of manufacturing filigree metal lamp shades - Google Patents

Description

Aug. 2a, w23. Mmmm VA. E. SHEPHERD ET AL METHOD OF MANUFACTURING FILIGREE METAL LAMP SHADES Filed March ll, 1922 2 Sheets-Sheet 1 /15 l ,I j?? INM Patented ug. 28, 1923.

j' UNITED STATES IParr-:Nbr oFFlcE.

ALFRED E. SHEPHERD, 0F FLINT, AND EDWARD G. LOVEBING, 0F DETROIT,

MICHIGAN.

IIETHOD OF HANUFACTBING FILIGBEE METAL LAMP BHDES.

Application med Hatch 11, 1922. Serial No. 542,897.

To all whom z't may V Be it known that we, Aunnn SHEPHERD and EDWARD G. LovEuNo, citizens of the United States, residing at Flint Genesee County, Sta-te of Michigan, and Detro1t, county of Wayne, State of Mich1gan, respectively, have invented a certam new and useful Im rovement in Methods of Manufacturing iligree Metal Lamp'Shades, and declare the following to be a full, clear, and exact description of the same, such as enable others skilled in the art to wh1ch 1t pertains to make and use the same, reference being had to the accompanyxn drawings, which form a part of this spec1 cation. l

@ur invention relates to a. method of manufacturing a fili ee metal lamp shade by electrical deposit10n of metal over a non-metallic filigree backing as hereinafter described.

'lhe object is to produce ligree metal' lamp shades easily and cheaplyin an innite number of designs, and produce exactly the design desired.

A further object is to produce accurately in liligree metal a erforated paper or lace work design at a slight cost through the use of our process of electrical deposition.

These and other objects together with the details of working the process and construction of the article will more fully appear from the following description, appended claims and accompanying drawings, in `which:

Figure l is a cross-sectional view through the treating tank.

Fig. 2 is a perspective showing the aelectrically depositedlayer 'oli metal partially stripped away at the bottom from its mpportingl plate.

Fig. 3 is a cross section through the metal plate which carries the ligree backing on which the metal is deposited.

Fig. t is an elevation of a simple design ,formed in ligree metal.

Fig. 5 is an elevation of a ligree metal candle shade.

Fig. 6 is a perspective of the frame Work for the shade illustrated in Fig. l5.

@ur invention comprises the construction of ligree metal lamp shades by electrical deposition of metal over a filigree backing the design of which it is desired to reproduce in the filigree metal work of the shade.

We prefer to use, because ot the many ysuch strip or layer of metal over a forms in which it may be obtained and its comparatively inexpensive character, a backing of filigree paper. These perforated paper sheets are obtainable in an infinite variety of designs. However, it is apparent that a backing of other material such as lace might be utilized. This erforated paper backing, because of its ragile character, must be suitably supported deposit of the metal thereon, and we prefer to deposit the layer of metal thereon `as a sheet and then strip it oil and form it into the desired shape to make a shade,

suitable metal shade frame work.

Let l() indicate the tank which contains a bsuitable electrolyte solution 11. The anode 12 is a metal bar from which the deposit is to be made, such as a bar of copper, and the lead-wire from the source of current supply 13 is itself indicated as la. The leadn wire to the cathode is indicated as 15. At the cathode isv our filigree backing, metal coated to receive a deposit, and suitable support. A suitable method which we have used is to spread a coating of wax 16 over a suitable metal plate 17, which plate is connected with the lead-Wire 15. Our backing 18 of whatever design it is desired to use is covered on one side with a suitable coating of metal 19 such as a bronze powder plumbago, et cetera, which is then spread over the wax surface of the metal plate 17 which serves as the cathode. Sucient was is removed from the plate as at 20 to provide a metallic conductor through the plate between the metal coating 19 ot the paper sheet and the metal base 17 of the plate so that the metallic connection with the bath will he complete.

The current is then permitted to pass through the tank for that period of time which is Sufficient to deposit a layer of metal of the desired thickness at the cathode. The metal plate 17 is now removed from the bath and the deposited layer of metal 21 with its adhering portions of backing is stripped from the Wax surface of the plate. We now have a sheet of-ligree metal of the same design as the paper backing. It will be noted as shown. in Fig. 3 that the deposited metal has formed around the edges of the perforated paper.. form so that when this layer of deposited metal is stripped from the wax surface of the plate, `portions of the filigree paper for the electrical securing paper form adheres thereto by virtue of the metal ehgaging over the edge thereof. 'llhese adhering portions of paper do not interfere with 4the use of this metal sheet for a lamp shade, as the side to which the paper adheres would be used asthe inside of the shade; however, they may be removed if desired.

This may be used as it is as a metal lace or doily if desired. lin connection with the manufacture of lamp shades, however, this metal sheet is shaped and formed over a suitable fra-me work 22 to which it is preferably Ysecured by brazing or soldering to form a complete lamp shade. rllhe metal filigree sheet may be cut if desired to aid in the shaping and then soldered to form an integral metal structure, and shades of varied and attractive designs are easily formed. These shades are generally used in connection with a silk lining which is secured thereto, though this forms no part of the invention,

What we claim is:

l. The art of making by electro-deposition in metal filigree a reproduction of a perforated paper sheet which consists in coating one surface of such sheet with a conducting medium, applying the opposite surface thereof to thewaxed surface of a metal plate to be used as one terminal in an electro deposition bath so that the paper sheet will adhere to such waxed surface to be supported thereby, removing a portion of the wax to establish direct connection between the coated .surface of the paper and the body of the plate, and electrically depositing metal on such metal coated surfaceof the paper sheet.

2. The art of making by electro-deposition in metal filigree a copy of a, fragile nonrnetallic filigree which consists in covering one surface of the non-metallic filigree with recense a conducting medium, providihg a metal plate to be used at one terminal in the electro-deposit bath with a surface coating of adhesive material, spreading the non-metal-t viding an electric contact between the coating of the ili ree and the metal plate and placing the p ate carrying such'iligree in an electro-deposit bath, and electrically depositing metal on the metal coated surface of such filigree.

3. 'll he method of forming by electro-deposition in openwork sheet metal, an imitation of a fragile non-metallic filigree which consists in covering one surface' of the nonrnetallic ligreewith a conducting medium providing a support with an adhesive surface, spreading the uncoated surface of such filigree over the adhesive surface ofthe support to be carried thereby, establishing electrical connection between the coated surface of the ligree and a source of electric current, and electrically depositing metal on the metal coated surface of said filigree. l

d. 'llhe process of forming by electro-deposition, a filigree metal duplicate of a fragile non-metallicliligree which consists in covering one surface of the non-metallic filigree with a conducting medium providing a support for the filigree with an adhesive .surface, spreading the filigree over such adhesive surface for support thereby with the coated surface outside, disposing the ligree support in an electro-deposit bath, and electrically depositing metal on the coated surface of the filigree. .v

ln testimony whereof we sign this specification.

ALFRED E. SHEPHERD. EDWARD G. LVERllNG..

Images