William Scott Webster

US Patent:

42592712, Mar 31, 1981

Filed:

May 4, 1979

Appl. No.:

6/036156

Inventors:

L. John Minnick - Cheltenham PA
William C. Webster - Norristown PA
Charles L. Smith - Conshohocken PA

International Classification:

B01J 202

US Classification:

264 8

Abstract:

Improved method for making generally spherical particulate shot-like product comprising permitting a siliceous-aluminous composition of specified characteristics onto a rotating squirrel cage rotor near top dead center thereof and causing said impinging molten material to be projected in droplet form and cooled while suspended in a gaseous cooling medium, such as air, into an amorphous generally spherical product, suitable for use as an abrasive or filler material.

US Patent:

48923850, Jan 9, 1990

Filed:

Feb 19, 1981

Appl. No.:

6/235970

Inventors:

William M. Webster - Princeton NJ
John P. Russell - Pennington NJ

Assignee:

General Electric Company - Schenectady NY

International Classification:

G02B 518
B44F 112

US Classification:

35016223

Abstract:

An improved authenticating device comprises a substrate bonded to the sheet material, the substrate having a reflective diffractive structure formed as a relief pattern on a viewable surface thereof, and a transparent material covering the structure. Specified grating parameters of the diffractive structure, obtainable at low cost, result in peculiar, but easily discernable, optical color properties that cannot be copied by color copying machines.

US Patent:

41536550, May 8, 1979

Filed:

Jul 23, 1976

Appl. No.:

5/708200

Inventors:

Leonard J. Minnick - Cheltenham PA
William C. Webster - Norristown PA
Charles L. Smith - Conshohocken PA

International Classification:

B01J 202

US Classification:

264 8

Abstract:

Methods of making finely divided product from fly ash compositions, including both dry fly ash compositions and aqueous suspensions of fly ash in combination with alkaline earth metal compounds. The fly ash composition, preferably including 10 to 50% combined alkaline earth metal oxides, is heated to molten condition while collecting gases evolving therefrom, including sulfur oxide gases. The top portion of the melt is then poured in a manner causing a molten stream thereof to be divided into a multiplicity of fractions and cooled to solid form while encompassed by a fluid cooling medium in a manner to produce either a shot or a granulated aggregate product. The bottom portion of the melt is nearly pure metallic iron which is recovered, as such, for other uses. Preferably, the molten stream impinges on a rotating member in a manner to produce shot, or is quenched in a water bath to form a granulated type product.