Abstract: A pump for raising liquids through a height exceeding the barometric height has adjacent to an outlet of the pump a pumping chamber whereof one end is defined by a reciprocable center portion and a rubber annulus which is in non-sliding engagement with the center portion and with a peripheral wall of the chamber. Openings in the center portion are normally closed by a flap valve. The valve is held closed whenever the center portion is being moved in a direction to reduce the volume of the pumping chamber. Adjacent to an inlet to the pump, there is a chamber having a wall portion formed by an elastomeric sleeve which can store potential energy. Contraction of the sleeve is limited by a perforate metal support.

Abstract: The jaws of a self-tailing channel of a winch are each provided with teeth in the form of ribs or ridges, the teeth being on a skew and being staggered so that a tooth on one of the jaws is not opposite to a tooth on the other of the jaws. In the embodiments shown the teeth are staggered by half their pitch; in one embodiment the teeth are straight and skewed and in another are arcs on a center of curvature spaced from the central axis of the jaw. This disposition of teeth enables the jaw to accommodate to a variety of widths of rope and also provides very positive gripping of that rope without however resistance to it being stripped when desired.The disclosure also includes a novel arrangement of stripper tongue and line guide in which the stripper tongue is provided on a stationary slip ring which forms the base of the tailing channel and where the line guide entraps an end portion of the tongue and may be radially supported by it.

Abstract: A self tailing winch has a tailing channel defined by a pair of jaws one of which rotates with the drum of the winch but one of which is non-rotatable. A line guide and stripper element are associated with the non-rotatable jaw, preferably being integrally formed with it, in one piece.