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in subjects: "matrices"

Matrix-Molding Device

Patent for improvements to matrix-molding devices, "and the object is to provide simple devices which are carried by the matrices or molding devices for forming rule retaining members which have angular grooves" (lines 14-17).

Date: September 12, 1913

Creator: Markwell, Andrew E.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Matrix Molding Device.

Patent for improvements on matrix molding devices, "to provide simple devices or improvements in matrices of standard size and adaptation for use in linotype and other line casting machines for preparing the operating edges of printers' slugs for holding cross-rules" (lines 10-15), including illustrations.

Date: November 4, 1918

Creator: Markwell, Andrew E. & Evans, S. C.