Otto and Bell Balanced Slide Valve, Patent Model

Description:

This model was submitted to the U.S. Patent Office with the application for the patent issued to Henry Otto and Patrick F. Bell, of Bloomington, Illinois, December 18, 1883, no. 290650.

The model represents a D-slide valve of ordinary shape, with most of the back cut away and formed in the shape of a short hollow cylinder. This cylinder is filled with a closed piston suspended on rollers on a flat bar, which, in turn, is suspended from the top of the valve chest. The bar passes through a tunnel in the piston and is of sufficient length to accommodate the valve travel. The effect of this construction is that the steam pressure ordinarily exerted on the back of a flat valve is in this case exerted on a piston that is not a part of the valve but is suspended independently.

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.

Date Made: 1883Patent Date: 1883-12-18

Inventor: Otto, HenryBell, Patrick F.

Location: Currently not on view

Place Made: United States: IllinoisAssociated Place: United States: Illinois, Bloomington

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

Exhibition:

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.308719Catalog Number: 308719Accession Number: 89797Patent Number: 290,650

Object Name: valve, balanced, slide, modelpatent model, balanced slideObject Type: Patent Model

Measurements: overall-from catalog card: 5 1/2 in x 4 1/2 in; 13.97 cm x 11.43 cmoverall: 2 1/2 in x 6 1/2 in x 4 1/2 in; 6.35 cm x 16.51 cm x 11.43 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a6-79c6-704b-e053-15f76fa0b4fa

Record Id: nmah_847099

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