UNT Libraries Government Documents Department - 5 Matching Results

Search Results

Results: 1 - 5

Calculating-Machine.

Description: Patent for an improvement to mechanical calculators by providing the "means for facilitating the addition of successive numbers of the same or different denominations, and also for subtracting and multiplying the same by substantially the means employed in adding" (lines 10-14). It includes a written explanation and illustrations.
Date: April 17, 1894
Creator: Stallard, Sherman R.
Item Type: Refine your search to only Patent

Cotton-Press.

Description: Patent for a simple, inexpensive, and powerful plunger for a cotton-press that is directly controlled by the operator. The plunger is hydraulically powered, the pressure being created by steam.The plunger's parts are arranged so the power is multiplied.
Date: April 24, 1894
Creator: Williams, Silas Jackson
Item Type: Refine your search to only Patent

Ice-Cream Freezer.

Description: Patent for an ice-cream freezer that has "a novel construction and relative arrangement of the refrigerating box and the cream cups as will be described whereby to secure a more compact and convenient arrangement of cups and also to effect a rapid and thorough freezing of the cream as desired" (lines 9-14).
Date: March 20, 1894
Creator: Stidham, James S.
Item Type: Refine your search to only Patent
Back to Top of Screen