Object Details
- Description
- This is a wooden model of a very simple variable drop cut-off valve gear in which a poppet valve is lifted by a bell crank operated by a cam. The cam is a cylinder that may be moved parallel to its axis, so as to bring any part of the cam against the follower of the bell crank. The cam is so shaped that the valve will open at the same time for all positions of the cam, but the valve will close progressively earlier or later as the cam is moved along its shaft.
- Reference:
- This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
- Location
- Currently not on view
- Credit Line
- Gift of Franklin Machine Company, Providence, R. I.
- ID Number
- MC.309819
- catalog number
- 309819
- accession number
- 109438
- Object Name
- valve gear, steam engine
- valve gear, steam engine, model
- Physical Description
- wood (overall material)
- Measurements
- overall: 6 in x 13 in x 6 in; 15.24 cm x 33.02 cm x 15.24 cm
- place made
- United States: Rhode Island
- Related Publication
- Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173
- See more items in
- Work and Industry: Mechanical and Civil Engineering
- Bulletin 173
- Engineering, Building, and Architecture
- Work
- Industry & Manufacturing
- National Museum of American History
- Record ID
- nmah_847366
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a6-8c02-704b-e053-15f76fa0b4fa
