Arrangement of Blocking Gear applicable for Compound Hydraulic Presses.
Year: 1890

page_text: Date of Application, 25th June, 1890
Complete Specification Left, 5th Feb., 1891-Accepted. 7th Mar., 1801
PROVISIONAL SPECIFICATION
An Arrangement of Blocking Gear applicable for Compound
Hydraulic Presses.
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 this invention to be as follows:-
My invention relates to an arrangement of automatic blocking gear applicable
for compound presses and particularly to the construction of press described in the
Specification forming part of my previous Application for Letters Patent
numbered 1611 and dated January 30th 1890 in which I employ a compound
cylinder or cylinders, the inner rams being connected to one follower and the outer
rams being connected to a second, the lower follower.
In applying my present invention to a press of this description having say three
hydraulic cylinders placed side by side I mount on the lower follower two hydraulic
cylinders with the necessary valves. Each cylinder is fitted with two rams which
are connected' in pairs to the two blocking plates which are suitably guided on the
lower follower.
When the first or top follower carrying with it the two guide rams or side props
as described in my said Specification has risen to the required height a valve is
automatically opened say by means of a pivoted lever carrying a roller which runs
in a groove in the side prop, the groove terminating at the required distance in
order that the roller may be moved and the lever actuated when the top follower
has risen to the proper point. The effect of opening this valve is to open the
connection between the inner central cylinder which rises with the lower follower
and the two hydraulic cylinders on the lower follower whereby the two pairs of
rams in the last named cylinders are forced outward and the blocking plates are
moved over the holes in the lower follower through which the side props have risen.
Meanwhile the top follower has continued to rise but as soon as the pressure is
turned into the outer portion of the central cylinder the lower follower immediately
overtakes the side props and the roller on the valve lever returning to its groove
opens the blocking cylinders to the exhaust which is conducted away through
telescopic pipes.
When the bale has been lashed, the attendant before relieving the pressure in
the press cylinders, opens the ends of the blocking cylinders to the full pressure by
actuating a rope, chain or equivalent in connection with the proper valve, then,
relieving the pressure in the press cylinders, the blocking rams are immediately
forced' inwards and the blocking plates withdrawn and all the rams and followers
descend together.
Dated this 24th day of June 1900
H. B. BARLOW,'
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
An Arrangement of Blocking Gear applicable for Compound
Hydraulic Presses.
A
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 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 an arrangement of automatic blocking gear applicable
for compound presses and particularly to the construction of press described in the
Specification forming part of my previous Application for Letters Patent
numbered 1611 and dated January 30th 1890 in which I employ a compound
cylinder or cylinders, the inner rams being connected to one follower and the outer
rams being connected to a second, the lower follower.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying two sheets of drawings reference being had
to the figures and letters marked thereon.
Figure 1 is a side elevation of part of a compound press with three hydraulic
cylinders and an arrangement of blocking gear according to my present invention
and Figure 2 is a sectional plan of the same.
In these views the central hydraulic cylinder is marked a and its ram b and the
two side: cylinders are marked c and their rams d; the three rams b, d, d, are all
hollow and form cylinders for the ram e and side props ff respectively fitted within
them. The ram e and side props ff are connected to the top follower-g while the
three hollow rams b, d, d, are all connected to the bottom follower h.
i
The parts above described are arranged and operate substantially in the manner
described in my aforesaid Specification.
In applying my present invention to a press of this description I mount on the
lower follower h two hydraulic cylinders i with the necessary valves. Each
cylinder is fitted with two rams which are connected in pairs to the two blocking
plates which are suitably. guided on the lower follower h. When the first or top
follower g carrying with it the two guide rams or side props fas described in my
aforesaid Specification has risen to the required height a valve is automatically opened
say by means of a pivoted lever m carrying a roller n which runs in a groove fin
one of the side props f the groove terminating at the required distance in order
that the roller n may be moved and the lever m actuated when the top follower g
has risen to the proper point. The effect of opening this valve is to open the
connection between the inner céntral cylinder or hollow ram b which rises with the
lower follower and the two hydraulic cylinders i on the said follower whereby
the two pairs of rams j in the last named cylinders are forced outward and the blocking
plates are moved over the holes in the lower follower h through which the side
props have risen. Meanwhile the top follower g has continued to rise but as soon
as the pressure is turned into the, outer portion of the central cylinder a the lower
follower h immediately overtakes the side props f and the roller n on the valve lever m
returning to its groove f' opens the blocking cylinders i to the exhaust, the water
being conducted away through telescopic pipes, not shown....
When the bale has been lashed the attendant before relieving the pressure in the
press cylinders, opens the ends of the blocking cylinders i to the full pressure by
actuating a chain o or a rope or equivalent in connection with the valve mover p
by which the proper valve is actuated, then, relieving the pressure in the press
cylinders, the blocking rams j are immediately forced inwards and the blocking
plates withdrawn and all the rams and followers descend together.
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 :-
^ LL
sielle at a sliding plate or plates each plate

page_text: being moved forward or backward as required by a pair of hydraulic rams mounted
in cylinders upon the bottom follower of the press, the forward movement of the
rams being effected automatically substantially as and for the purposes specified.
2. The combination with the cylinders i, and the rams j, of the plates k, and
automatic mechanism for controlling the valve and causing the rams j to slide
forward the plates k substantially as and for the purposes herein set forth.
3. The general combination and arrangement of parts substantially as herein
described with reference to the accompanying drawings.
Dated this 4th day of February 1891.
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant.