3 Matching Results

Search Results

Results: 1 - 3

Pencil Attachment

Description: Patent for a pencil attachment that serves the purpose of protecting the pencil point when not in use. The attachment also protects and cleans the rubber or eraser of the pencil.
Date: April 14, 1914
Creator: Swindowsky, Charles
Partner: UNT Libraries Government Documents Department

Oil Burner

Description: Patent for an improved oil burner design that uses steam to heat and vaporize the oil, mixing with the oil for more efficient burning, including an illustration.
Date: April 7, 1914
Creator: Tinkham, George F.
Partner: UNT Libraries Government Documents Department

Well-Drilling Apparatus.

Description: Patent for drilling well apparatuses that approximate the weight imposed so that the weight can be regulated to improve efficiency, including instructions and illustrations.
Date: April 28, 1914
Creator: Hughes, Howard R.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen