Improvements in Steam Fire Engines and Pumping Engines.
Year: 1893

page_text: Date of Application, 28th Nov., 1893
Complete Specification Left, 28th Aug., 1894-Accepted. 6th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Steam Fire Engines and Pumping Engines.
JAMES CADOUX HUDSON 75 Upper Ground Street Blackfriars Road London
Engineer do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in steam fire engines and pumping engines,
where the piston of the steam cylinder has two piston rods, one passing on each
side of a crank shaft and crank cheeks connected to a crosshead on the piston rod of a
double acting piston pump; from this crosshead a connecting rod returns to the pin of
crankshaft. I form this crosshead so as to receive the two piston rods and the pin of
the bottom joint of the connecting rod, and cast the piston rod of pump and crosshead
in one piece, either in gunmetal, bronze, steel, or other suitable material, or forge
them in bronze, steel, or iron. The crosshead may form an oil cup to the bottom
part of connecting rod. This arrangement lessens the over all length of engine
than if the connecting rod and crosshead were in separate parts screwed or keyed
together, and gives greater strength and solidity to the parts.
This arrangement
suitable for horizontal or vertical engines, or when one, two-
or more engines are placed together and connected, and having crank at varying
angles.
Dated this 28th day of November 1893.
JAMES CADOUX HUDSON.
COMPLETE SPECIFICATION.
Improvements in Steam Fire Engines and Pumping Engines.
JAMES CADOUX HUDSON 75 Upper Ground Street Brackfriars Road London
Engineer 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 :-
This invention relates to improvements in steam fire engines and pumping engines
where the piston of the steam cylinder has two piston rods one passing on each
side of a crank-shaft and crank cheeks, and connected to a crosshead on the piston
rod of a double acting piston pump; from this crosshead a connecting rod returns
to the pin of crankshaft. I form this crosshead so as to receive the two piston rods
and the pin of the bottom joint of the connecting and cast the piston rod of pump
and crosshead in one piece either in gunmetal, bronze, steel or other suitable
material, or forge them in bronze, steel or iron. The crosshead may form an oil
cup to the bottom part of connecting rod, this arrangement lessens the over
all length of engine than if the connecting rod and crosshead were in separate
parts screwed or keyed together and gives greater strength and solidity to the
parts.
This arrangement is suitable for horizontal or vertical engines or when one, two
or more engines are placed together and connected and having cranks at varying
angles.
In order that my said invention may be most fully understood and readily carried
into effect, I will proceed to describe the drawing hereunto annexed.

page_text: DESCRIPTION OF DRAWINGS.
Fig. 1 is a sectional elevation through a steam fire or pumping engine shewing
one form of crosshead (C.) and pump rod (D).
Fig. 2 is a front elevation of same.
Fig. 3 is a sectional plan at line (A. B).
Fig. 4 is a sectional elevation of another form of crosshead (C¹) with pump
rod (D¹).
Fig. 5 is a side elevation of same.
Fig. 6 is a sectional plan at line (A¹ B').
The piston (E.) of steam cylinder has two piston rods (F. F.) one passing the
crankshaft (G.) and crank cheek (H.) at one side, the other rod on the other side
and each secured to the crosshead (C.) which is cast or forged solidly with the pump
rod (D). In Figs. 1. 2 & 3 the crosshead (C.) is cored or hollowed out to receive
the lower end of connecting rod (1.) and a hole is also bored through the crosshead
to receive the pin (J.) on which the connecting rod vibrates, the crosshead
thus hollowed out forms an oil cup or well to the lower end of connecting rod.
This form of crosshead is suitable for casting in steel, bronze gunmetal or other
metal.
Figs. 4, 5 & 6 shew the crosshead (C) with part or jaw (K) slotted out and
formed to receive the piston rods (F) connecting rod (1) and joint pin (J¹) as in
Figs. 1. 2 & 3). The crosshead (C) is solid with the pump rod (D) and is of
suitable form to be forged in steel, bronze, or other forging metal.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
In a steam pumping engine having two piston rods arranged as shewn I claim
the arrangement of crosshead formed to receive these piston rods, and also the pin
and bottom joint of connecting rod and formed as an oil cup or otherwise; the
crosshead being cast or forged solidly with the pump rod as illustrated and
described.
Dated this 28th day of August 1894.
JAMES CADOUX HUDSON.