Artifact Details

Title

Early Calculating Devices - Patent Application - "Calculating Machine"

Catalog Number

102704299

Type

Still Image

Dimensions

overall: 5 in x 4 in

Description

B&W image of a Sheet 1 of 5 sheets of a Patent Application for "Calculating Machine" Patented Sept 10, 1878 No. 207,918
R. Verea.It has two diagrams showing the mechanisms involved in the machine.

Category

Identification photograph

Credit

Courtesy of Gwen Bell

Lot Number

X7413.2015