Grindstone Frame Patent Model
date: label: date made
content: 1879
label: patent date
content: 1879-01-07
name: label: inventor
content: Hoppen, Joseph E.
notes: label: Description
content: Patent: US211096
label: Description
content: This is a patent model for a grindstone frame, patented by Joseph E. Hoppen of Newark, New Jersey in January 1879. It had two main improvements; an adjustable water trough that could be raised, lowered, or detached for cleaning, and a movable foot pedal that could swivel to either side so the operator could use either foot. The frame was built from cast-metal sides joined by rods and tubes, making it adaptable to grindstones of different sizes. The design allowed for easy adjustment, better comfort for the user, and the option to power the stone by foot, steam, or other means.
label: Location
content: Currently not on view
place: label: place made
content: United States: New Jersey, Newark
label: associated place
content: United States: New Jersey, Newark
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.308826
label: catalog number
content: 308826
label: patent number
content: 211,096
label: accession number
content: 89797
objectType: label: Object Name
content: patent model, grindstone frame
physicalDescription: label: Measurements
content: overall: 6 in x 13 3/8 in x 4 1/2 in; 15.24 cm x 33.9725 cm x 11.43 cm