US1149940A

US1149940A - Process of making moving-picture screens.

Info

Publication number: US1149940A
Application number: US80713413A
Authority: US
Inventors: Henry Pannill
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-12-16
Filing date: 1913-12-16
Publication date: 1915-08-10
Anticipated expiration: 1932-08-10

Description

No Drawing.

umtrnn STATES PATENT oFFIoE.

HENRY PANNILL, or PETERSBURG, VIRGINIA.

PROCESS OF MAKING MOVING-PICTURE SCREENS.

To all whom it may concern Be it known that I, HENRY PANNILL, a

' citizen of the United States, residing at Petersburg, in the county of Dinwiddie and State of Virginia, have invented new and useful Improvements in Processes of Makpear as the following description is read.

In carrying out the present invention I apply to one side of a canvasof the proper size a composition of equal quantities of linseed oil and Japan drier. This coating is allowed to stand for twelve hours when the canvas is turned over and a coating applied to the opposite-side consisting of a mixture of three parts water and one part alcohol. This last coating removes the stiffening, or, in other words, takes the life out of the can vas and makes it supple and prevents the same from cracking. A mixture of ,one part dr-y aluminum and three parts bronze liquid is then applied to the side first coated and after twelve hours drying time has elapsed a coating of dry aluminum powder or gold powder is applied and rubbed in thoroughly with a brush after which 'a bright polish may be produced by rubbing the surface with Turkish toweling or like material.

If it is found that thecanvas is spotted after -the first application of aluminum and least one hour and then covered The object of theinvention is to produce V Specification of Letters Patent. Patented Aug, 10, 1915. Application filed December 16, 1913. Serial No. 807,134.

bronze liquid, a mixture of three parts shellac varnish and one part alcohol should be applied. After. approximately twelve hours have elapsed a second coating of aluminum and. bronze liquid (one part aluminum and three parts bronze liquid) should be applied. This should be allowed with a dry aluminum powder and rubbed in with a brush. After this the surface may be polished as before. This will produce a screenhaving a bright mirror-like surface which is of suflicient roughness to properly reflect the rays of light impinging against the same'and which is thoroughly pliable and supple.

What is claimed is 7 1. The process of producing moving picture screens which consists in coating one side of the canvas with a sizing, and subsequently coating the opposite side with a canvas and to render it supple, coating" the bifig an aluminum or gold powder into the surface first coated and olishing the same.

to dry at liquid adapted to take the life out ofgthe 2. The .rocess of pro ucing moving pic- 1 ture screens which consists 1n applying to one side of a canvas the composition of equal parts of linseed oil and Japan drier, subsequently applying to the opposite side a mixture of three parts of .water and one part alcohol, then applying a mixture of one part dry aluminum powder and three parts bronze liquid to the side first coated and finally rubbing into the side first coated an aluminum or gold powder and pdIiShing the same.

' In testimony whereof I afiix my signature in presence of two witnesses. v

' HENRY PANNILL. Witnesses: PAUL Pn'r'rrr,

' CHARLES EJPQLLARD;