Identifier: internationalenc03ashh (find matches)
Title: The international encyclopaedia of surgery; a systematic treatise on the theory and practice of surgery
Year: 1881 (1880s)
Authors: Ashhurst, John, 1839-1900
Subjects:
Publisher: New York : W. Wood & company
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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Triple pulley. for multiplying power are too well understood to ne.ed explanation. Pulleysfor surgical use do not difter#from those made for other purposes. Thecommon two- and three-wheeled blocks of ship-chandlers are equally efficient,though less elegantly constructed.
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Spanish windlass and Spanish capstan, with clove-hitch. When pulleys are not at command, extemporaneous contrivances can bemade to answer a good purpose as means of powerful extension. A con- DISLOCATIONS. 647 trivance called by sailors the Spanish windlass, is made by twisting with acrossbar a number of cords^ attached to the extending band at one end, andto some fixed object at the other. As the crossbar is swept around con-tinuously in one direction, the torsion of the bundle contracts its length withirresistible power for a short distance. The power thus obtained is dangerously great, and, at the same time, thelimits of motion are inconveniently small. The contrivance is much infe-rior to one used by the author in such cases, and called by some sailors theSpanish capstan, although it too .is termed the Spanish windlass by many.The contrivance is more easily extemporized than the one commonly recom-mended by surgical writers, and is always preferred by sailors for simpleincrease of

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