capstan

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capstan

1. a machine with a drum that rotates round a vertical spindle and is turned by a motor or lever, used for hauling in heavy ropes, etc.
2. any similar device, such as the rotating shaft in a tape recorder that pulls the tape past the head
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Capstan

 

a ship’s winch with a vertical drum for lowering and hoisting the anchor, taking up the slack in mooring lines, lowering fishnets and trawls, and the like. Capstans may be operated manually or by steam, electric, or hydraulic drives. The drives are usually set below deck.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

capstan

[′kap·stən]
(engineering)
A shaft which pulls magnetic tape through a machine at constant speed.
(naval architecture)
A rotating vertical spindle-mounted drum on which cable is wound for raising an anchor or other heavy weight.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

capstan

On magnetic tape drives, a capstan is a motorized cylinder that traps the tape against a free-wheeling roller and moves it at a regulated speed.


Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
As ships and anchors got bigger, a device needed to be invented to haul the anchor up - thus the capstan was born, probably more than 2,000 years ago.
Manual and microprocessor-controlled wire and cable, fiber-optic, and tubing extrusion systems include dual-flyer payoffs, payoff stands, NM series single-screw extruders, fixed and manual centering crossheads, entry/exit caterpillars and capstans, multi-pass cooling troughs, vacuum-calibration troughs, dual automatic coilers, single and dual automatic take-ups, take-up stands, and cabling machinery.
The unpainted parts and loaded onto the capstans and from this point on the system is fully automatic.
"As apprentices we trained on capstan lathes, then went on to turret lathes, and finished on automatics, getting sufficient experience to set- up the complex machines.
From paper-tape capstan drives, direct-drive electronic motion control expanded into the computer peripheral market, controlling disk-drive heads, card readers and feeders, print heads, and paper feeds in printers as well as the capstans in magnetic tape drives.
Dockside machinery and equipment including winches, pistons, boilers, capstans and keel blocks will show their role in the working life of the docks, while anchors, propellers and buoys will bring to life aspects of the life of the river including navigation, pilotage and tugs.
for insulating and jacketing wire and cable with thermoplastic, thermoset, and fluoropolymer compounds, and for foam/coax extrusion; fiber-optic extrusion coating lines; single and multilayer sheet lines with roll widths to 42 in.; spiral winders for hose reinforcement; automatic crossover wire dual take-ups and coilers; patented dual flyer pay-offs; shaftless pay-offs and take-ups to capacities of 30,O00 lb; dual-drum, belt wrap, or open types of capstans; caterpillars for heavy-duty applications; insulation patching presses; and systems for rereeling, recoiling, length measurement, and spark testing.
The unpainted parts are loaded onto the capstans and from this point on the system is fully automatic.
Manual and microprocessor-controlled wire and cable, fiber-optic, and tubing extrusion systems include dual-flyer payoffs, payoffs stands, NM series single-screw extruders, fixed and manual centering crossheads, entry/exit caterpillars and capstans, multipass cooling troughs, vacuum-calibration troughs, dual automatic coilers, single and dual automatic take-ups, take-up stands, and cabling machinery.