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Ruling Machine
Patent for a new and useful improvements in ruling machines. This invention is to "provide a machine of this character by means of which engravers may cut horizontal, inclined, or circular lines into the plate, or draftsmen draw the same lines upon a sheet of drawing" (line 14-18).
Date:
November 30, 1897
Creator:
Owen, Thomas
System:
The Portal to Texas History
Bucket Excavator.
Patent for "new and useful Improvement in Bucket Excavators, of which the following is a specification. My invention relates to excavators of that kind in which a bucked is arranged to travel back and forth upon a runway which is lowered into the ground and which is adapted to determine the cross sectional outline of the ditch or excavation" (lines 5-13).
Date:
November 30, 1915
Creator:
Bettis, William I.
System:
The Portal to Texas History