Adjustable Wrench Patent Model
date: label: date made
content: 1868
name: label: maker
content: Evarts, James M.
notes: label: Description
content: James M. Evarts (1819-1901) patented this wrench in 1868. Evarts created this adjustable wrench to provide a simpler and more reliable tool than others in use during the period. The jaw of the wrench is fixed in place by a nut and axial pin in an elongated slot with tapered and serrated walls, allowing for easy adjustment of the jaw of the tool to fit different sizes of pipe and other material. Evarts’ invention displays the growing need for industrial tools in this period and their subsequent innovation to meet different needs and be used with more effectiveness and ease. Evarts was a machinist and gas fitter in New Haven, Connecticut, referred to as “one of the oldest and best respected citizens of New Haven” in his obituary.
place: label: place made
content: United States: Connecticut, New Haven
label: place made
content: United States: Connecticut, New Haven
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: ER.316028
label: accession number
content: 89797
label: catalog number
content: 316028
objectType: label: Object Name
content: Model, Patent
physicalDescription: label: Measurements
content: overall: 8 1/4 in; 20.955 cm