Improvements in Hydraulic Spindle Slide Valves.
Year: 1891

page_text: Date of Application, 2nd Dec., 1891
Complete Specification Left, 20th Aug., 1892-Accepted, 12th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic Spindle Slide Valves.
I, HENRY MARR, of 24 Albert Street, Masboro', Rotherham, in the County of
York, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the manner in which I construct a valve for use upon
hydraulic cranes, presses, lifts and other hydraulic machines, whereby I am enabled
to effectually shut off the supply of the water to the cylinder or other portion of
the press or machine with the simple movement of a hand lever acting upon a
balanced or partly balanced spindle forming the valve for admission and exhaust of
the water or other fluid.
In carrying my invention into effect when constructing a valve for use upon a
hydraulic press, 1 form the body of such valve of gun metal or other suitable
metal, and I close one end with a solid cap while upon the other I place a gland
cap, through which a central spindle or rod can pass. Upon one side of this central
chamber containing the spindle I place a branch or boss to serve as an inlet, and
upon the opposite sides I provide two bosses to serve as supply and exhaust
connections to and from the press cylinder. I hollow out the central chamber
opposite to the pressure inlet branch, and above and below this central enlarged
passage I provide accurately fitting leathers to prevent the escape of the water
between the spindle or rod and the main chamber or passage thus formed in the
body of the valve. To keep the leathers from being damaged or cut when the
rod or spindle is drawn backwards and forwards I place loose bushes or rings upon
or around the reduced portion of my spindle or rod such that they protect the
edges of the leathers when the main body of the spindle is not in contact with
them. I form the smaller portion or reduced necks of my spindle of triangular
section or other section other than round so that water may freely pass through
the central hole of the bushes when the plug or main portion is withdrawn from
contact with the leathers.. Or I make the reduced necks of circular form and
provide holes or passages along or through the neck to permit of the water passing
through to one of the branches from the other. I place springs around the necks
on the spindle so as to keep the bushes upon the leathers when the valve is opened,
and when the valve is closed 1 cause the central solid plug portion to be well within
both upper and lower leathers and thus close the means of escape or outlet for
the water. Upon the lower end of my spindle I form a reduced end or neck having
a shoulder at its extreme end, the neck being of triangular shape or perforated or
grooved for permitting the water to pass through the loose bush which I place upon
the neck to protect the lower leathers. I also place a spring upon the top of the
bush and around the neck so that when the valve is opened at its lower end the
lower bush may be kept within the leather packings. keep the leathers or joint
rings in correct position by means of rings or gland bushes one end of which bears
upon the top of the leather, while the other receives pressure from the screw cap
or gland nut.
I make the branches to suit any desired form of connection either by flange and
bolt coupling or by screw and leather washer or ring. And I arrange the outlet
and inlet to suit any particular requirement for receiving and distributing fluid
under pressure. I employ any form of lever connection for actuating the valve
and any usual and ordinary bracket or leg projection for carrying it or securing
it to any part of the machine to which it may be desired to attach it..
I employ any suitable material such as gutta percha or other composition

page_text: instead of leather for preventing the escape of the water when the valve spindle
is in its closed position.
Dated this 1st day of December 1891.
CLERK & MARKS,
13, Temple Street, Birmingham, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Hydraulic Spindle Slide Valves.
HENRY MARR of Albert Street Masborough Rotherham in the County of York,
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 the manner in which I construct a valve for use upon
hydraulic cranes, presses, lifts and other hydraulic machines.
In the two accompanying sheets of explanatory drawings,
Figure 1 is a sectional elevation of one form of my valve and Figure 2 is a plan
of the same.
Figure 3 is a sectional elevation of another form of valve, and Figure 4 is a
plan of the same.
The same letters of reference indicate the same parts in each valve.
I form the body of the valve A Figure 1, Figure 2, of gun metal or other
suitable metal, and I close one end with a solid cap a, while upon the other end I
place a gland cap B into which is secured a gland C, having a central spindle or
rod D passing through it into a central chamber A. Upon one side of the central
chamber containing the spindle I place a boss or branch E to serve as an outlet or
supply connection to the press or cylinder, and upon the opposite sides I provide
two bosses or branches F, G to serve as inlet and exhaust connections for the pipes
supplying the pressure, and taking away the exhaust or waste water from the
valve.
I hollow out the central chamber opposite to the outlet E and above and below
this central enlarged passage I provide accurately fitting leathers H, H to prevent
the escape of the water between the spindle or rod D and the main chamber A¹
or passage thus formed in the body of the valve. To keep the leathers from being
damaged or cut when the rod or spindle is drawn backwards and forwards, I place
loose bushes or rings K, K' upon or around the reduced portion of my spindle or
rod D so that they protect the edges of the leathers when the main body of the
spindle is not in contact with them. I form the smaller portions or reduced necks
of my spindle d d' of triangular section or other section other than round so that
water may freely pass through the central hole of the bushes K when the plug or
main portion D' is withdrawn from contact with the leathers H, H', or I make the
reduced necks of circular form and provide holes or passages along or through
the neck to permit of the water passing through to one of the branches from the
other. I place springs L, L' around the necks on the spindle so as to keep the
bushes within the leathers; when the valve is opened and when the valve is closed
I cause the central solid plug portion D' to be well within both upper and lower
leathers H, H' and thus close the means of escape or outlet for the water upon the
lower end of my spindle D. I form a reduced end or neck having a nut, enlarged
end, or collar M at its extreme end, the neck d' being of triangular shape or
perforated or grooved for permitting the water to pass through the loose bush K!
which I place upon the neck to protect the lower leather or leathers H¹. I also
place a spring upon the top of the bush and around the neck so that when the
valve is opened at its lower end the lower bush may be kept within the leather
packing. I keep the leathers or joint rings in correct position by means of rings
or gland bushes. O, O', one end of which bears upon the top of the leather, while

page_text: the other receives pressure from the screw cap a or gland nuts B, C. These gland
bushes are provided with port holes o as shown on plan Figure 4.
I make the branches to suit any desired form of connection either by flange and
bolt coupling or by screw and leather washer or ring, and I arrange the outlet and
inlet to suit any particular requirement for receiving and distributing fluid under
pressure.
I employ any form of lever connection P, P₁ for actuating the valve, and any
usual and ordinary bracket or leg projection for carrying it or securing it to any
part of the machine to which it may be desired to attach it. I employ any
suitable material such as gutta percha or other composition instead of leather
for preventing the escape of the water when the valve spindle is in its closed
position.
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 :-
1. The construction and arrangement of valves for hydraulic and like machines
substantially as and for the purposes hereinbefore described, and as illustrated in
the accompanying drawings.
2. The construction of valves for use on hydraulic pipes, mains, and hydraulic
machines having a sliding spindle with loose collars thereupon for protecting the
leathers during the movement of the spindle through them, substantially as herein-
before described.
Dated this 19th day of August. 1899
CLERK & MARKS,
13, Temple Street, Birmingham, Agents for the Applicant.