IMPROVEMENTS IN PUMPS FOR SHIPS AND OTHER PURPOSES, AND IN APPARATUS FOR WORKING THE SAME.
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by Edwin Sanders at the Office of the
Commissioners of Patents on the 16th November 1877.
EDWIN SANDERS, of Yarmouth, Nova Scotia, in the Dominion of Canada, but at
present of 15, Water Street, Liverpool, in the County of Lancaster, Master Mariner.
"IMPROVEMENTS IN PUMPS FOR SHIPS AND OTHER PURPOSES, AND IN APPARATUS
FOR WORKING THE SAME.'
"
The object of my Invention is to construct a double-action pump capable of
removing bilge water, washing decks, and as a fire engine or force pump.
My Invention is applicable for use on board ships and for other purposes.
A pump constructed according to my Invention for ships' use consists,-
First. In the combination of a main or pumping cylinder and a receiving cylinder,
and a valved delivering cylinder, all arranged and connected to a pump tube having
an adjustable shut-off valve and a chamber in connection by pipes with either side
of the keelson, and with both bilges, whereby the water may be pumped either
from the well hole, or from either bilge, or from overboard.
Second. In a pumping cylinder connected with the receiving cylinder by upper
and lower apertures, and a delivering cylinder having a valved diaphragm and a
valved and an open connection with the pumping cylinder, and a pump tube having
a stop valve therein, whereby a continuous suction and discharge, or double action
may be maintained from the source of supply in the ship's hold, or from overboard
as may be desired.
Third. In combination with the pump tube and bilge water tube, a connecting
chamber on either side of the keelson, having an arrangement of clack valves or
their equivalent so fitted as to be adjustable therein, so that the source of supply
may be opened from the pump well, and closed from the bilges, or open from either
bilge and closed from the pump well, so as to exhaust either the pump well or the
water in the port or starboard bilge as may be required. The clack valves or their
equivalents are arranged in the chamber so that the same valve will swing over and
close either the pump tube orifice or the bilge tube orifice, as may be required. This
arrangement is duplicated, one being for the port side and the other for the star-.
board side; and in addition there is provided a third valve arranged in a box above

page_text: the chambers and keelson, so that the port or starboard supply may be entirely cut
off if required. The valves are operated by means of levers, which are fixed on
the outside of the chambers, and worked by rods, chains, or their equivalent from
the deck through the pump trunk or well.
Fourth. In combination with the pumping, receiving, and delivering cylinders a
pump tube having a stop-off lifting valve for changing the suction from the inside
to the outside of the ship, or vice versa.
Fifth. In a pump gear consisting of a shaft and power wheels, the former having
a cam operating between friction wheels on a frame sliding on a vertical fixed post,
whereby the rotation of the cam through the action of the shaft elevates and
depresses the frame to which the piston rod is connected, to give the desired stroke
to the plunger of the pump.