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Knight's Mechanical Encyclopedia (ed. Knight) 10 0 Browse Search
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me, will subject it to a pressure of 300 pounds to the square inch. The air is generally allowed to escape by a valve-way before the approaching piston, and is collected in a reservoir, whence it passes to the machinery where its expansive force is to be applied. The circumstances of position and use are so very varied that no general statement of its mode of application will apply. Sometimes it is stored in reservoirs at the point where it is used as a motor or a ventilator. Fisk and Waterman's compressed-air reservoir. Fisk and Waterman, January 17, 1865. The reservoirs for compressed air are located within the mine, and connected by comparatively large induction-pipes with the air-forcing pump at the mouth of the mine. The object is to exert a uniform pressure at the working point, where compressed air is used as a motor, and to prevent a stoppage of the ventilation during a temporary stoppage of the compressing-engine at the mouth of the mine. The eduction-tubes by whi
y. Steering-wheel.Trigger. Steeve.Tripping line. Stern.Truck. Stern-fast.Trundle-head. Stern-sheets.Truss. Stirrup.Try-sail. Stop.Tuck. Stopper. CableTumbler. Stopper. RiggingTurk's head. Storm-sail.Tye. Strand.Undocking. Strap.Uphroe. Stray-line.Vang. Stream-anchor.Velocimeter. Stream-cable.Vessel. Streamer.Voyol. Stretcher.Waft. Studding-sail.Wall-knot. Stump-mast.Wapp. Submarine thermometer.Warp. Supporter.Watch-tackle. Surge.Water-anchor. Swab.Water-line. Sweep.Waterman's knot. Swinging-boom.Water-sail. Tabling.Wheel. Tack.Wheel-rope. Tackle.Whelp. Tack-tackle.Whip. Tail-tackle.Whip-on-whip. Tell-tale.Whisker. Thimble.Winch. Thimble-eye.Windlass. Thole.Wind-sail. Throat.Wire-rope. Thrum.Wooden-wing. Thumb-cleat.Wood-lock. Thwart.Worming. Tie.Yard. Tier.Yard-tackle. Tiller.Yoke. Nau′ti-cal In′di-ca-tor. An instrument invented and thus named by Hunter. It consists of a stand supporting a circular plate of polished brass, about 14 i
prevent the passage of air while the liquid is allowed to flow. An air-trap. Wa′ter-man's knot. A sailor's mode of bending a rope to a post or bollard. Waterman's knot. Wa′ter-mark. (Paper-making.) Any distinguishing device or devices indelibly stamped in the substance of a sheet of paper while yet in a damp or olute coils kept apart by interlaced iron wires, the coils being then carefully heated in a furnace, and then plunged into a hardening bath. In August, 1858, Henry Waterman patented a plan of drawing the wire lengthwise from the fire through the hardening liquid, and by this means reduced the cost from three dollars a pound to three cents. Waterman's process of tempering wire is said to have brought him $83,000 over all expenses. Fowler's sheet-metal wire-machine. Wire-an-neal′ing. Softening a wire by heat after it has been hardened by drawing or by exposure to cold after heating. G. I. Washburn, October 7, 1862, patented a process for annea