IMPROVEMENTS IN DOUBLE ACTING LIFT AND FORCE PUMPS
Year: 1873

page_text: PROVISIONAL SPECIFICATION left by William Robert Lake at the
Office of the Commissioners of Patents, with his Petition, on the
15th October 1873.-A communication from abroad by William
D. Baxter, of the City and State of New York, United States of
America.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN DOUBLE ACTING LIFT
AND FORCE PUMPS," a communication, to be as follows:-
The first part of the said Invention consists in arranging the air vessel
over and between the two pumps to form the fulcrum for the lever, in.
combination with a water way connecting the open ends of the pumps
with the delivery pipe and check valve, the piston rods passing through
stuffing boxes at the top of the waterway and connecting by slots and
friction rollers with the brake or lever. The said rollers enter yoke
pieces formed at the ends of the piston rods. By this arrangement the

page_text: pump can be attached to the floor in some otherwise useless corner, and
will be out of the way, but at the same time very easily operated and the
parts are not likely to get out of repair, and will be easily accessible for
keeping in order.
I am aware that pumps have been made with an air vessel that forms
the fulcrum for the lever, but the arrangements of the interior portions
of such pumps are different from mine, and the lever is connected to the
piston rod by links. In my pump the said rollers and yoke pieces
enable me to obtain a very free movement in a less space than hereto-
fore, hence, the said pump is very compact, and can be worked in a
space that would be insufficient for other pumps of the same capacity.
Q
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The second part of the said Invention is designed to prevent destruc-
tion of the pumps, and great inconvenience and damage by water
resulting from inability to sufficiently empty the pump of the water to
prevent the bursting of the cylinders in cold weather. In order to over-
come these difficulties I make use of a double acting cock placed
between the two cylinders; I am thereby enabled to empty the water out
of the upper part and out of the cylinders down into the reservoir and
outlet pipe below with one movement of the cock, without having to
empty the pump of the water by separate cocks and separate vessels for
carrying off the water.
The third part of my Invention is designed to provide a jointed double
journal box or bearing for the axle of the pump. By the constant
friction on the sides of the journal boxes in which the axle works, as
well as of the sides of the chuck holding the axle, the metal wears away
and spaces are left between the said chuck and the sides of the journal
boxes by which the accurate motion of the arms or levers working the
piston is impaired....
:
This part of my Invention consists, thirdly, in casting the journal
boxes separately instead of together, and in casting them in such a
manner that one of the said boxes only is cast in one piece with the bed,
which is provided with a female dovetail on the opposite side, and
lengthened into a threaded screw in order to receive the male dovetail in
the loose journal box, and a nut which holds the said dovetail firmly to the
bed: When the sides of the chuck and the journal boxes are worn or
-

page_text: reduced it is only necessary to take off the nut and the female dovetailed
journal box, and remove, by filing, so much of the shoulders of the part
of the bed from which the male dovetail extends as the metal worn away
from the sides, in order to insure at all times a steady and accurate
bearing.