Screw Cutting Die Patent Model
date: label: date made
content: 1875
label: patent date
content: 1875-05-04
name: label: inventor
content: Griffith, Mortimer A.
notes: label: Description
content: This patent model of a screw cutting die was patented on May 4, 1875 by Mortimer A. Griffith of Dayton, Ohio. A screw die is a tool used to cut threads on the outside of a rod or bolt to make screws.
label: Description
content: This invention improved the process by making it possible to use separate adjustable cutting pieces in a frame instead of one solid die. This allowed manufacturers to adjust the size of the threat being cut by moving the cutters closer or farther apart. The tool was therefore about to cut cleaner and be more precise.
label: Location
content: Currently not on view
place: label: place made
content: United States: Ohio, Dayton
label: associated place
content: United States: Ohio, Dayton
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.308818
label: catalog number
content: 308818
label: patent number
content: 162,914
label: accession number
content: 89797
objectType: label: Object Name
content: patent model, screw cutting die
physicalDescription: label: Measurements
content: overall: 4 1/8 in x 1 3/4 in; 10.4775 cm x 4.445 cm