Collection
Serial/Series Title
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7 Matching Results
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7
Counterbalancing Device for Pumps.
Patent for a counterbalancing device for windmill pumps, which reduces friction and lateral pull on the pump.
Date:
March 9, 1909
Creator:
Cotten, Charles Kavendor
Object Type:
Patent
System:
The Portal to Texas History
Apparatus for Molding Hollow Concrete Walls
Patent for an apparatus that is a mold for crafting hollow concrete walls. Illustration included.
Date:
December 21, 1909
Creator:
Nelson, William E.
Object Type:
Patent
System:
The Portal to Texas History
Hayrick Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date:
1909
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Ice-Cream Freezer
Patent for an ice cream freezer that may also be used as an egg beater or a churn. Illustrations included.
Date:
June 15, 1909
Creator:
Moon, Richard Davis
Object Type:
Patent
System:
The Portal to Texas History
Spring-Motor
Patent for a motor used to operate light machinery such as sewing machines using spring power. Illustrations included.
Date:
September 28, 1909
Creator:
O'Bannon, William H. & Field, James M.
Object Type:
Patent
System:
The Portal to Texas History
Powder-Ejector
Patent for a vaginal powder ejector. Illustrations included.
Date:
September 28, 1909
Creator:
Sands, William Walter
Object Type:
Patent
System:
The Portal to Texas History
Railroad Joint
Patent for a railroad joint. Illustration included.
Date:
August 17, 1909
Creator:
Coupland, David B.
Object Type:
Patent
System:
The Portal to Texas History