Hydraulic Presses, Hoists, and Cranes.
Year: 1886

page_text: Date of Application, 22nd Dec., 1886
Complete Left, 22nd Sept., 1887
Complete Accepted, 25th Oct., 1887
Hydraulic Presses, Hoists, and Cranes.
I WILLIAM MACLEAN WILSON, of the firm of Nasmyth Wilson and Company
Limited, of Patricroft in the County of Lancaster, Engineer, do hereby declare the
nature of said Invention for LMPROVEMENTS IN DIRECT ACTING STEAM PUMPS
APPLICABLE FOR HYDRAULIC PRESSES HOISTS AND CRANES, to be as follows:-
This invention relates to the Invention for which Letters Patent No. 3883 were
granted to the late Robert Wilson on the 27th November 1873. In the Specification
to this said Patent a steam engine for working the pumps for hydraulic presses or for
cranes and hoists is described and shown the improved steam engine being provided
with three cylinders the pistons and piston rods of which are connected to one crank
shaft whereby a steady rotary motion is obtained and the fly wheel may be dispensed
with. The pumps may be connected to one or both ends of the piston rods or may be
worked by eccentrics cranks or otherwise.
Now, my Improvements, consist essentially in duplicating this arrangement that is
to say I employ an additional engine comprising three cylinders with pistons and
piston rods connected to a second crank shaft and with a supplementary set of force
pumps.
This additional engine is supported in a suitable frame and is placed preferably
above and the reverse way to the first engine and may either work independently of it
or be coupled and work with it or may be held in reserve and worked as a
supplementary engine when required.
In place of three cylinders four or more cylinders for each engine may be
emploved

page_text: My improvements further consist in an improved arrangement of mechanism for
automatically regulating the engines so as to control the amount of water admitted to
the hydraulic accumulator.
This is effected by an arrangement of trip levers connected to the throttle or steam
admission valve of the engine or engines the trip levers being operated by an anti-
friction bowl on the accumulator box or weight in such a manner as to shut off the
admission of steam to the engine as the ram reaches the end of its outward stroke
whereby the engine stops and ceases to pump fluid into the accumulator and after the
ram has descended a certain distance on its return stroke another antifriction bowl
comes in contact with the trip lever and moves it in the reverse direction to open the
throttle or steam admission valve and cause more fluid to be pumped into the
accumulator.
By adjusting the position of the antifriction bowls the engine may be automatically
stopped and started at any point desired.

page_text: COMPLETE SPECIFICATION.
Improvements in Direct Acting Steam Pumps Applicable for
Hydraulic Presses, Hoists, and Cranes.
I WILLIAM MACLEAN WILSON of the firm of Nasmyth Wilson and Company
Limited of Patricroft in the County of Lancaster Engineer, do hereby declare the
nature of said Invention for IMPROVEMENTS IN DIRECT ACTING STEAM PUMPS
APPLICABLE FOR HYDRAULIC PRESSES HOISTS AND CRANES 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 Invention for which Letters Patent No. 3883 were
granted to the late Robert Wilson on the 27th November 1873. In the Specification
to this said Patent a steam engine for working the pumps for hydraulic presses or for
cranes and hoists is described and shown the improved steam engine being provided
with three cylinders the pistons and piston rods of which are connected to one crank
shaft whereby a steady rotary motion is obtained and the fly wheel may be dispensed
with. The pumps may be connected to one or both ends of the piston rods or may be
worked by eccentrics cranks or otherwise.
Now my Improvements consist essentially in duplicating this arrangement that is
to say J employ an additional engine comprising three cylinders with pistons and
piston rods connected to a second crank shaft and with a supplementary set of force
pumps.
This additional engine is supported in a suitable frame and is placed preferably
above and the reverse way to the first engine and may either work independently of
it or be coupled and work with it or may be held in reserve and worked as a
supplementary engine when required.
In place of three cylinders four or more cylinders for each engine may be
employed.
My improvements further consist in an improved arrangement of mechanism for
automatically regulating the engines so as to control the amount of water admitted to
the hydraulic accumulator.
This is effected by an arrangement of trip levers connected to the throttle or steam
admission valve of the engine or engines the trip levers being operated by an anti-
friction bowl on the accumulator box or weight in such a manner as to shut off the
admission of steam to the engine as the ram reaches the end of its outward stroke
whereby the engine stops and ceases to pump fluid into the accumulator and after the
rain has descended a certain distance on its return stroke another antifriction bowl
comes in contact with the trip lever and moves it in the reverse direction to open the

page_text: throttle or steam admission valve and cause more fluid to be pumped into the
accumulator.
By adjusting the position of the antifriction bowls the engine may be automatically
stopped and started at any point desired.
And in order that my Invention may be fully understood and readily carried into
effect. I will describe the accompanying four Sheets of Drawings reference being had
to the figures and letters marked thereon.
Figure 1 is a side elevation and Figure 2 a plan of a direct acting steam pump
constructed and arranged according to my Invention. Figure 3 is a cross sectional
clevation taken on the line A B. Fig. 1 showing the arrangement of the steam
cylinders and Figure 4 is a similar view taken on the line C D Fig. 1 showing the
arrangement of one of the sets of force pumps. Figure 5 is a side elevation of the
hydraulic accumulator showing the improved arrangement of mechanism for auto-
matically regulating the engines. The arrangement in this instance being shown
applied to the top set of cylinders only and Figure 6 is a plan of the same showing
the relative positions of the engine and hydraulic accumulator.
Referring first to Figures 1 to 4 the two sets of steam cylinders are designated a a¹,
their piston rods b₁ their connecting rods c c¹ their crankshafts d d and their
pumping cylinders e e¹ respectively. It will be seen that the three cylinders a are
placed in one direction and that their piston rods bare coupled by the connecting
rods e to the crankshaft d and are also connected to the pistons f of the force pumps e
while the cylinders a¹ are placed below and in the reverse direction and their piston
rods are coupled by their connecting rods to the crankshaft and are also
connected to the plungers of the force pumps e¹. The cylinders a a¹ their
connections the crankshafts and the force pumps are all supported in a suitable
frame as shown and the force pumps are furnished with the usual supply and
delivery pipes marked hand i respectively.
The two sets of cylinders may be worked either both at high or both at low pressure
or one set at high and the other at low pressure.
My improved arrangement of mechanism for automatically regulating the engines is
illustrated by Figures 5 and 6 in which is the cylinder and the ram of the
hydraulic accumulator and m the box or weight. The box or weight m is guided as
usual by two pillars p and on the box m is fixed a rod m² on which are mounted
adjustably two antifriction bowls n and o. The throttle or steam admission valve q is
connected by a series of pivoted levers to a pivoted levers weighted at s' and fulcrumed
on a stationary bracket and a trip lever is secured to or formed with a pivoted
lever s.
As the ram lifts the box or weight m the antifriction bowl n as the ram
approaches the end of its stroke comes in contact with the trip lever thereby
operating the pivoted levor s and by the connections q' closing the throttle valve q
and shutting off steam from the engine.
This movement of the lever s brings forward into the position indicated by dotted
lines Fig. 5a lever 3 which is connected to the levers by the link s so that on the
return stroke of the ram the antifriction bowls come in contact with the lever s³
thereby moving the levers back into its initial position as shown in full lines Fig. 5
and by the connections' opening the throttle valvo q and re-admitting steam to the
engine.
By adjusting the position of the antifriction bowls n and o the engine may be
stopped and started at any point desired so as to regulate and maintain a constant
supply of water in the accumulator.
The views Figures 5 and 6 are intended to illustrate an arrangement in which the
upper set of cylinders are low pressure cylinders and constitute the engine for working
the hydraulic accumulator while the lower set of cylinders directly operate the press
or other apparatus. In such an arrangement the improved regulating mechanism
would only be applied to the low pressure cylinders. In other arrangements where
for example the engines consist of two sets of low pressure cylinders coupled and
working as one engine the improved mechanism would be arranged to regulate both
engines.

page_text: 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.The combination with a steam engine comprising three or more cylinders the
pistons and piston rods of which are connected to one crankshaft of a second or
supplementary engine comprising three or more cylinders preferably placed above
and in the reverse direction to the first named cylinders and with pistons and piston
rods connected to a second crankshaft substantially as and for the purposes herein
described and as illustrated by the Drawings annexed.
2. The use and application of the adjustable antifriction bowls n and o or their
equivalents in combination with a suitable arrangement of trip levers and connections
for operating the throttle or steam admission valve so as to stop and start the engine
at any point and regulate the stroke of the accumulator ram substantially as and for
the purposes herein described and as illustrated by the Drawings annexed.
3. The several constructions combinations and arrangements of parts embodying
my improvements in direct acting steam pumps for hydraulic presses hoists and
cranes substantially as herein described and as shown.
Dated THIS ZIST
of September 1007.
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicant.
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicant.