Improvements in Hydraulic Valves and in Hydraulic Valve Boxes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Hydraulic Valves and in Hydraulic Valve Boxes.
I, THOMAS BLEARS, of the Firm of Thomas Blears and Company, of Tomlinson
Street, off Great Jackson Street, Hulme, Manchester, in the County of Lancaster,
Engineers and Tool Makers, do hereby declare the nature of this invention
to be as follows:
My invention relates to improvements in hydraulic valves and in hydraulic
valve boxes and the improvements may be used separately or combined. The
object of my first improvement is to enable the valves to be opened and closed
easily without the use of springs or weights and the object of my second im-
provement is to construct valve boxes in a simple and economical manner.
In constructing hydraulic valves according to my invention I form the
seatings in any convenient manner in the valve casing and I make each valve of
the form of a ram or piston of two diameters, one slightly larger than the
other the valve being formed on the smaller diameter and I form a collar or
equivalent near the middle of each ram against which an arm or projection
secured to the stud of the working lever acts to open and close the valves when
required.
In operation when water under pressure is admitted to the valve chamber it
acts upon each end of the first ram and the valve being upon the smaller end
is held firmly closed by the pressure on the other or larger end. To open the
valve the working lever is moved and the ram raised simply against the excess
of pressure on its large end; the water now passes under the valve to its work
such as a lift press &c.
To release the pressure from the lift, press, &c., the working lever is moved in
the opposite direction which opens the second and closes the first valve when
the water escapes. By this arrangement when two valves are employed only
one of them can be actuated at once by moving the working lever.
Two, three or more valves may be employed as required.
My improved valve box is formed of two blocks of metal in which the water
passages are drilled and I connect these blocks by metal pillars through each
of which is drilled a water passage which corresponds with a passage in each
block the pillars being secured to the blocks in any convenient manner. By
this construction great facility for drilling all the water passages and fitting and
repairing the valves is obtained.
Dated this 27th day of April 1898.

page_text: Improvements in Hydraulic Valves and in Hydraulic Valve Boxes.
I, THOMAS BLEARS, of the Firm of Thomas Blears and Company, of Tomlinson
Street, off Great Jackson Street, Hulme, Manchester, in the County of Lancaster,
Engineers and Tool Makers, 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:-.
My invention relates to improvements in hydraulic valves and in hydraulic
valve boxes and the improvements may be used separately or combined. The
object of my first improvement is to enable the valves to be opened and closed
easily without the use of springs or weights and the object of my second im-
provement is to construct valve boxes in a simple and economical manner.
In constructing hydraulic valves according to my invention I form the
seatings in any convenient manner in the valve casing and I make each valve of
the form of a ram or piston of two diameters, one slightly larger than the
other the valve being formed on the smaller diameter and I form a collar or
equivalent near the middle of each ram against which an arm or projection
secured to the stud of the working lever acts to open and close the valves when
required.
In operation when water under pressure is admitted to the valve chamber it
acts upon each end of the first ram and the valve being upon the smaller end'
is held firmly closed by the pressure on the other or larger end. To open the
valve the working lever is moved and the ram raised simply against the excess
of pressure on its large end; the water now passes under the valve to its work.
such as a lift press &c.
To release the pressure from the lift, press, &c., the working lever is moved in
the opposite direction which opens the second and closes the first valve when'
the water escapes. By this arrangement when two valves are employed only
one of them can be actuated at once by moving the working lever.
Two, three or more valves may be employed as required.
In the accompanying sheet of drawings-
Fig. 1 is a side elevation, Fig. 2 an end elevation and Fig. 3 a plan of a
hydraulic valve box made according to my invention, Fig. 4 is a section through
the line AB, Fig. 2; and Figs. 5 and 6 are sectional views taken respectively
through the lines CD and EF, Fig. 4.
In these views, a designates the valve box made in two parts bolted together,
b and c the two valves made in the form of rams and each of two diameters, one
slightly larger than the other, the valve face being formed on the end of the
smaller diameter which has a seating on the passages, see Fig. 4, and I form a
collar or its equivalent near the middle of each ram.
A working lever d, or other device such as a wheel is secured to the stud e
carried by the valve box, and on this stud is also secured a double ended lever f
preferably forked at each end as shown by dotted lines in Fig. 3, the forks lying
when the valves are closed out of contact with, but near the collars on the rams.
The drawings represent both valves closed and when water under pressure
enters the valve box through either of the openings g¹, it acts upon each end
of the ram and the valve face being upon the smaller diameter it is held
firmly closed on its seating by the pressure of water on the larger end of the
ram.
;
To open the valve the working lever d is moved downward so that one fork of
the double ended lever f acts upon the collar of the ram b and raises it against

page_text: the excess of pressure on its larger end thus allowing the water under pressure
to flow under the valve face of the ram into a passage h which is connected by
either opening to the press or other work. The liquid may be admitted
through either opening g¹ and conducted to the press &c. from either outlet h³
a single inlet and outlet g and being sufficient.
To relieve the pressure from the lift, press &c. the lever d is moved in the
opposite direction which raises the valve face on the ram c from its seating
against the excess of pressure of water on its larger end and simultaneously
allows the pressure on the upper enlarged end of the ram 6 to at once close the
valve on its lower end while the water from the press or lift flows back under the
valve face on the ram c and escapes through an outlet branch i.
By this arrangement when two valves are employed, only one of them can be
actuated at once by moving the working lever.
In place of two valves as described and illustrated I might employ three or
more valves; in such cases two or more working levers and means for opening
and closing the valves would be required.
My improved valve box is made preferably in two parts, each of which has
the passages g and hand the seatings for the valves on the rams b and c drilled
and prepared before the parts are bolted together, while the main opening in
the centre of the valve block is preferably formed when moulding, and if pre-
ferred, the passages for water might be cored out in place of being drilled.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is-
1. A hydraulic valve box fitted with two or more valves, each of the form of
a ram or piston of two diameters, with the valve on the smaller diameter and
kept normally closed by the water pressure on the larger diameter and each
ram having a collar or equivalent through which its valve can be opened by a
lever or other device substantially as and for the purposes described and as
illustrated in the accompanying drawings.
2. A hydraulic valve box formed in two parts and fitted with the valve rams b, c,
and lever or equivalent operating device substantially as and for the purposes
herein set forth.
Dated this 26th day of October 1808
H. B. BARLOW & GILLETT,
Agents for Applicant, 17, St. Ann's Square, Manchester.