Uhry and Luttgens Valve Gearing, Patent Model


This model was submitted to the U.S. Patent Office with the application for the patent issued to H. Uhry and H. A. Luttgens, of Paterson, New Jersey, March 20, 1855, no. 12564.

The model represents a “link motion” applicable to marine, locomotive, or stationary steam engine. It is a combination of three eccentrics, the ordinary Stephenson link motion, an additional link pivoted to the Stephenson link, a differential rocker, and a main rocker. The main rocker and the Stephenson link operate one valve, which distributes steam to the cylinder, supplies outside lead, and cuts off the steam in proportion to the decrease of travel. The valve operated by the differential rocker exhausts the steam and opens and cuts off the admission of steam near full stroke of the piston.


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.

Date Made: 1855Patent Date: 1855-03-20

Inventor: Uhry, H.

Location: Currently not on view

Place Made: United States: New JerseyAssociated Place: United States: New Jersey, Paterson

See more items in: Work and Industry: Mechanical and Civil Engineering, Bulletin 173, Engineering, Building, and Architecture, Work, Industry & Manufacturing


Exhibition Location:

Related Publication: Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173

Data Source: National Museum of American History

Id Number: MC.308656Catalog Number: 308656Accession Number: 89797Patent Number: 12,564

Object Name: valve gearing, steam engine, modelpatent model, valve, steamObject Type: Patent Model

Measurements: overall: 5 3/4 in x 13 1/4 in x 3 1/2 in; 14.605 cm x 33.655 cm x 8.89 cmcylinder and eccentrics - from catalog card: 10 in; 25.4 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a6-602d-704b-e053-15f76fa0b4fa

Record Id: nmah_847080

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