improvements in Manual Fire Engines.
Year: 1890

page_text: Date of Application, 28th Mar., 1890
Complete Specification Left, 19th Dec., 1890-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
improvements in Manual Fire Engines.
We, JAMES COMPTON MERRYWEATHER and CHRISTOPHER JOHN WALLACE
JAKEMAN, both of Greenwich Road, S.E., in the County of Kent, Engineers, do
hereby declare the nature of this invention to be as follows:-
This invention consists in an improved form of valve box & valves for manual
power fire engines. The improvements are as follows:-The bottom of the
chamber instead of being flat in all directions is curved upwards towards the centre
of the barrel thus reducing the air space & giving a freer flow for the water.
The valves rotate in hangers so that they may be ground on their faces when in
place & gudgeons formed solid with the hangers are dropped into grooves in the
valve box casting, so that no loose pins are required & the valves may be easily
removed for clearing or examination.
The covers are of small area so that the joints are readily made & are not likely
to be blown out, and fewer screws are required to secure them.
We prefer to make the valve box entirely of gunmetal so that there is no trouble
or inconvenience from oxidation.
Dated this 26th day of March 1890.
JAMES COMPTON MERRYWEATHER.
CHRISTOPHER JOHN WALLACE JAKEMAN.
COMPLETE SPECIFICATION.
Improvements in Manual Fire Engines.
We, JAMES COMPTON MERRYWEATHER and CHRISTOPHER JOHN WALLACE
JAKEMAN, both of Greenwich Road, S.E., in the County of Kent, Engineers, do
hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
One method of carrying out our invention is shown on Fig. 1. 2. & 3. herewith.
Fig. 1. shows a plan of the valve chamber half with covers removed.
Fig. 2. a vertical section to a large scale showing a portion of the chamber &
pump barrel with one suction valve in position and
Fig. 3. a vertical section of a portion of the chamber & pump barrel & one
delivery valve in position similar letters apply to all the figs.
$6
In Fig. 1. a. is the valve or pump chamber.
b. b. the chamber covers for
obtaining access to the valves c the flange for attachment of pump barrel.
In Figs. 2 & 3 the details of the valves are shown, "d" the suction valve, "e"
the delivery valve, " & "" hangers, for suspending the valves by the
gudgeons "h." The valves "d" & "e" are connected to the hangers “ƒg” by the
cylindrical parts, "ii," so that the valves may be rotated in place by squares
or slots on the cylindrical parts "" to grind the valves on their respective faces;
by removing the covers "" the valves may be lifted out of their chambers for
examination or repair. The bottom of the valve chamber is curved upwards on
all sides and towards the centres of the barrels, this reduces the air space,
strengthens the bottom of the chamber, permits a free flow of water to the
pump barrels when at work and allows the water to drain from the pumps when
not in use.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In the manual power fire engine, the form of chamber bottom shown and
described in reference to drawings herewith.
2. In a manual fire engine the construction of the valves so that they are free
to rotate on their faces, as shown and described.
3. In a manual fire engine, the arrangement of valve so that, by removing the
chamber cover the valve can be removed readily from its seat for examination and
repair.
Dated this 18th day of December 1890.
JAMES COMPTON MERRYWEATHER.
CHRISTOPHER JOHN WALLACE JAKEMAN.