Year: 1888

page_text: Date of Application, 1st May, 1888
Complete Specification Left, 31st Jan., 1889
Complete Specification Accepted, 16th Mar., 1889
1 ANDREW HIGGINSON of 7 Hurst Street Liverpool in the county of Lancaster
Engineer, do hereby declare the nature of this invention to be as follows:-
The object is to provide improved apparatus for directing the flow of fluid in
machines, for punching, rivetting, and raising weights of the class patented by me
in Great Britain No. 2701 and No. 1946.
Apparatus consists essentially in the combination of a valve chamber having four
openings and four valve seats with four valves or their equivalents on one spindle
such valves being so disposed that fluid may be directed as required through the
aforesaid openings; by preference the end valves are larger than the central valves.
A lever is used to give motion to the valve spindle and the four openings are
connected to the main pipe and to the cylinder in which the fluid operates. Instead
of seating valves piston valves may be used.
Per Pro. J. T. KING,
J. Johnson,
Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Directing the Flow of Fluids.
I ANDREW HIGGINSON of 7 Hurst Street Liverpool in the County of Lancaster
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 :-
The object is to provide improved apparatus for directing the flow of fluid in
machines for punching, rivetting, and raising weights of the class patented by me
in Great Britain No. 270183 and No. 194684.
The Apparatus consists essentially in the combination of a valve chamber having
four openings and four valve seats with four valves or their equivalents on one
spindle such valves being so disposed that fluid may be directed as required through
the aforesaid openings; by preference the end valves are larger than the central
valves. A lever is used to give motion to the valve spindle and the four openings are
connected to the main pipe and to the cylinder in which the fluid operates. Instead
of seating valves, piston valves may be used.
DESCRIPTION OF THE DRAWINGS.
Figs. 1 and 2 are longitudinal sections at right angles to each other of apparatus
under my invention. a is a valve chamber having four openings bed and e and
four valves f g h and i on a spindle j. The valve g is a piston valve and fits within
the seat n in which it is free to slide to & fro. The valve h is here for convenience
formed on one face of the piston but each valve may be separate if desired.
k stuffing box and gland. cap. mno and p valve seats. The valves fg and h
are secured to or formed with the spindle ; and the seat o is smaller than the seat n
which is in turn smaller than the seat m so that the spindle and valves f g and h
can be inserted into the valve chamber through the stuffing box opening. The valve i
is inserted into the chamber whilst the cap is removed and secured to the spindle j
by screwing or otherwise. q lever for giving motion to the valve. The opening o
is connected to the pipe leading to the top of the hydraulic ram piston the opening e
to the underside of the said piston and the opening d to the pipe leading from the
hydraulic pump.
The action is as follows:-when the lever q is depressed the valves f and h are
closed and water flows from the hydraulic pump by the ways d and c to the top of
the piston forcing the ram to its work. As the valve fis larger in area than the
valve h the lever is raised and the valves are returned to the position shown on the
drawings. When the resistance to the motion of the ram becomes so great as to
cause the excess of pressure on the valve fto lift the lever out of the operators hand.
The valves fand i being of equal areas the spindle remains in the position shown on
the drawings and water flows freely through the openings 6 and d back to the pump.
When the ram is to be lifted the lever q is raised, the valves g and i are closed and

page_text: water passes by the openings d and e beneath the ram piston, when the ram is lifted
the excess of pressure on the valve i over that on the valve g again causes the valves
to recover their normal position and allow water to freely flow from and to the
pump.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
Apparatus for directing the flow of fluids constructed substantially in the manner
1