US1697182A

US1697182A - Design and method of molding the same

Info

Publication number: US1697182A
Authority: US
Inventors: Charles J Hall; George C Kent
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1924-10-04
Filing date: 1924-10-04
Publication date: 1929-01-01
Anticipated expiration: 1946-01-01

Description

Jan. 1, 1929. 1,697,182

c. J. HALL ET AL DESIGN AND METHOD OF MOLDING THE SAME Filed Oct. 4, 1924 PRINT /1 WITNESSES: INVENTOR Char/es J. Ha/l, M, a d Geoye 61/49/77? ATTORNEY Patented Jan. 1, 1929.

UNITED STATES.-

PATENT OFFICE,

I CHARLES J HALL, OF WILKINSBURG, AND GEORGE C. KENT, OF TURTLE CREEK, PENN- SYLVANIA, ASSIGNORS T WESTINGHOUSE ELECTRIG AND MANUFACTURING COM rm, ACORPOBATION or PENNSYLVANIA.

. DESIGN AND EETHOD OF MOLDING THE SAME.

Application filed. October 4, 1924. Serial No. 741,620,

Our invention relates to molded articles and has particular reference to a method of.

producing a print or a design in molded material. 7 The principal object of our invention is, therefore, to produce a design, in a molded article which is impregnated with a heathardened binder.

Another object of our invention is to pro 0 vide a method of moldin a design in a lam-.

inated, impregnated artlcle and of producing a design of uniform color.

Heretofore, designs have been molded in material impregnated with a heat-hardened 5 binder, such as a phenolic condensation product, by placing a sheet of paper upon which the desi n is printed between sheets of impregnated tissue paper and molding with heat and pressure. This method is satisfactory for most purposes, but the background of the print produced thereby is dark colored and where considerable contrast between the design andthe background is desired this method is not satisfactory. \Vhen 5 using this method on thin molded articles,

the print is apt to break apart in molding. This is especially true where a slight flowing action or readjustment of the body of the material occurs in molding.

I Our invention is an improvement on the above process. Instead of disposing the print between sheets of thin absorbent paper, we employ a plurality of sheets of various kinds, which are so treated that we are able to mold a print in the surface of the article without effecting distortion or discoloration thereof.

In the drawing constituting a parthcreof and in which like numerals designate a like parts;

Figure 1 is an exploded View in perspective of the layers of material comprising the article before molding,

Figure 2 is a plan view of the molded article showing the print thereon, and

Fig. 3 is a side view of the molded article, partially in'section.

The body 1 or main'portion of-the article comprises a plurality of layers of fibrous material such as impregnated paper or duck.

Upon the body 1 we p ace two sheets of impregnated cambric 2 which may be of any desired color but preferably of a light color and over this is placed a sheet of unimpreg nated parchmentized paper 3 such as fish paper. The cambric provides a strong backing for the design and is impregnated with a bmder such as a phenolic condensation product to such an extent that it provides ust the correct amount of binder to properly consolidate the fish paper. The fish paper being parchmentized prevents an excess of binder from the backing sheets 1 or from the cambric 2 from flowing therethrough and discoloring the outer layers of the paper when subjected to heat and pressure. The

design which is printed on unimpregnated calendered paper 4 is placed over the fish paper 3 and-a sheet of impregnated paper 5, such as ap paper or tissue paper is placed on the outer surface. The amount of binder in the pp paper is just suflicient to consolidate

sheets

3, 4 and 5 when subjected to heat and pressure and provides a clear transparent surface without causing any discoloration or cloudingof the print 4.

Our invention provides a molded article comprising impregnated and unimpregnated fibrous material. When the article is consolidated with heat and pressure, it provides a structure, which may be used as a. name plate or a design as molded. The design or print may be molded in the surface of a thin plate and attached to another article with screws or other suitable means; or the design may be molded in the surface of a molded article comp-rising non-laminated or impegna-ted sheets of laminated material.

Although we have described a specific embodiment of our invention we do not wish to be limited thereto .as other modifications of our invention will suggest themselves to those skilled in the art without departing from. the spirit of our invention. For example we may substitute other forms of impervious paper for the fish paper of layer 3.

We claim as our invention:

1. The method of molding designs which comprises superimposing impregnated fabric on a body portion of impregnated molding material, placing a sheet of parchmentized paper thereon, disposing a-print between said paper and a sheet of transparent impregnated paper and curing with heat and pressure.

2. The method of molding designs which comprises superimposing impregnated cambetween sai Mia on the body portion of impregnated molding material, acing a sheet ofparchmentized pa er thereon, disposing a print paper and a sheet of transarent impregnated paper and curing with lieat and pressure.

3. The method of molding designs in the body of impregnated material which comprises plac ng. an im regnated fabric of ight color on said bo y, placing thereon a design printed on unimpregnated calendered paper and disposed between a sheet of parchmentized paper and a sheet of transparent impregnated paper and curing with heat and pressure.

4. The method of molding desigrisin a.

' body of impregnated material which comprises placing an im regnated fabric of light color on said b0 y, placing thereon a design printed on unimpregnated calendered paper and disposed between a sheet of unimpregnated parchmenti zed paper and a sheet of transparent im regnated paper and curing with heat an ressure.

5. The methodo molding designs in a body of impregnated material which comprises lacing an im regnated fabric of Y light co or on said he y, placing thereon a design printed on unimpregnated calendered paper and I disposed between a sheet of parchmentized paper and a sheet of thin transparent impregnated paper and curing with heat and pressure.

6. A method of molding which comprises twecn and a transparent covering layer on' said design.

9. A molded design comprising an ornamented design, a backing of material of light color therefor, a layer of impervious material interposed thcrebetwcen and a transparent covering layer on said design.

'10. A molded design comprising an ornamented design, a backing of fabric of light color therefor, a layer of impervious material interposed therebetween and a transparent covering layer on said design.

In testimony whereof, we have hereunto subscribed our names this first day of October, 1924.

CHARLES J. HALL. GEORGE o. KENT.