132 Matching Results

Search Results

Hoisting Apparatus.

Description: Patent for improvements in hoisting apparatus by “employing two cables and two sheaves that one cable and one sheave operate to elevate the weight or object in an approximately-vertical plane, so as to avoid contact with any side obstruction, while the secondary cable can subsequently be slackened sufficiently to permit the traveling sheave of the hoisting-cable to run off in a lateral direction and carry with it the sheave of the slackened secondary cable, for the purpose of transferring the object or weight to a desired position out of the line of the approximately-vertical direction first given to it.” (Page 2, lines 4-16) Illustration is included.
Date: March 22, 1892
Creator: Davis, Benjamin F.
Partner: UNT Libraries Government Documents Department


Description: Patent for improvements in harrows, "so that any farmer who possesses a Georgia stock or ordinary plow-beam with its attached handles can purchase one of [these] improved harrows per se and without the exercise of any special mechanical knowledge or experience apply the harrow device or contrivance to the beam of such ordinary plow stock." (Lines 40-47) Includes instructions and illustrations.
Date: November 14, 1891
Creator: Flatau, Louis S.
Partner: UNT Libraries Government Documents Department


Description: Patent for improvements onto railway joints to "omit the declining surfaces of the fish-plate and to employ in conjunction with my other devices or wedges an ordinary fish-plate, whereby the invention may be applied to the joints of rails now in use any change whatever either to the fish-plates or the bolts" (lines 22-28).
Date: November 22, 1892
Creator: Greenwell, Robert E.
Partner: UNT Libraries Government Documents Department