4 Matching Results

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Index.

Description: Patent for "an improved method of indexing books of reference, and more especially city and county records, and the means for carrying over from one line to another where several indexes are to be set opposite one name" (lines 9-14).
Date: April 11, 1893
Creator: Heppenstall, James Edward
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Loose-Leaf Binder.

Description: Patent for a loose-leaf binder for records that does not require removing previously inserted pages to add new ones and secures them in place with a screw lock on the paper holding rings. When the book is full, the whole binder may be locked in place as a form of permanent binding and may only be opened with a key.
Date: March 19, 1907
Creator: Parry, Rees F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Adding-Machine.

Description: Patent for an inexpensive, simple, easily operated, and improved registering machine that is meant to add numbers without mistakes. It uses revoluble number wheels and a spring-returned shaft among other materials.
Date: March 21, 1893
Creator: Brooks, Augustus J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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