38 Matching Results

Search Results

Results: 1 - 24 next

Blasting Cartridge.

Description: Patent for a new and improved blasting-cartridge. This design is "composed of two similar semi-cylindrical sections having flat smooth faces their entire length, adapted to rest or bear against each other and grooved to form the cylindrical fuse-opening" (lines 94-98). It further consists in the "bore tapering from said fuse-opening to the bottom or inner end of the shell, said semi-shells being provided on their outer sides and at their front ends for a portion of their lengths only with sharp… more
Date: July 2, 1889
Creator: Todd, James Polk & Welch, John Steel
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Blasting Plug.

Description: Patent for a new and improved blasting plug. This design is "to improve the usefulness and efficiency of the device, to render it capable of more general application, to provide a construction whereby a given charge is rendered more powerful and effective, and to provide a divided blasting-plug . . . The invention consists more particularly in a cylindrical blasting-plug divided longitudinally into two separate or independent sections, one of which is formed with a disk-head having a vent orifi… more
Date: November 5, 1889
Creator: Holsey, Julius H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen