Patent information:

Patent:Utility 1,304,571
Patented:May 27, 1919
Applied:May 9, 1918
Title:Mold for Forming Insulators or Other Porcelain Objects
Description:Mold for bushing with undercut petticoats formed by the casting process by pouring in clay slip
Category:Mold
Assigned to: 

Patentee Information:

KIRK, Charles J. New Castle, PA
BRAIN, GEORGE New Castle, PA

Class and subclass information:

Class:249STATIC MOLDS
Subclass:151CONTAINER-TYPE MOLDING DEVICE And an inner removable core to form recess or opening Having inner and outer shells forming conduit-type product, receptacle-type product, or module Core slidably removably engaging a hole in the wall of the molding device;
Class:249STATIC MOLDS
Subclass:108INCLUDING STATIC FILLING MEANS IN CONTACT WITH MOLD CAVITY Means is separable funnel or hopper;
Class:249STATIC MOLDS
Subclass:134CONTAINER-TYPE MOLDING DEVICE Of named component;
Class:249STATIC MOLDS
Subclass:59FORMING HELICAL OR THREADED PRODUCT;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1