Windlass Model

Description:

The windlass drum is made of two sections of different diameters, which turn together as one piece. The rope is so attached that it winds upon one section of the drum as it unwinds from the other, the net lifting or lowering effect being the difference between the length of rope wound upon the drum and that unwound. By making the sections nearly alike in diameter a large mechanical advantage is secured without making the drum too slender for strength or the crank too long for convenience. This model was made for the US National Museum to demonstrate the elementary form of the differential hoist.

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: 1922

Location: Currently not on view

Place Made: United States: District of ColumbiaAssociated Place: United States: District of Columbia, Washington

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.307599Catalog Number: 307599Accession Number: 68535

Object Name: model, differential windlass

Physical Description: wood (overall material)Measurements: overall: 12 in x 8 1/2 in x 5 3/4 in; 30.48 cm x 21.59 cm x 14.605 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a6-76e4-704b-e053-15f76fa0b4fa

Record Id: nmah_847655

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