IMPROVEMENTS IN HYDRAULIC PRESSES FOR COMPRESSING INTO FORM OF CARTRIDGES, CYLINDERS, BLOCKS AND OTHER FORMS
Year: 1884

page_text: We JOHN EBENEZER HOPKINSON and HENRY PRINCE both of N° 15 Walbrook
in the City of London, and County of Middlesex Engineers, and ANDREW MUIR
of No 2 Walbrook in the City of London and County of Middlesex Engineer do
hereby declare the nature of our invention for "IMPROVEMENTS IN HYDRAULIC
PRESSES FOR COMPRESSING INTO FORM OF CARTRIDGES, CYLINDERS, BLOCKS AND
OTHER FORMS to be as follows:-
"
This Invention relates to certain improvements in construction and general
arrangement of Hydraulic Presses, for moulding, feeding compressing and delivering
entirely automatically loose powder, or any other compressible material of a similar
nature into blocks, hollow cubes, or cartridges.
"
In carrying out these improvements we propose to construct an ordinary (double
or single ram) hydraulic press, having a circular, or other shaped, horizontal
revolving table in which are inserted various numbers of inoulds or dies for the
purpose of compressing cartridges or any other powderous material; we attach to
this press and fix above it an arrangement known as the Genoa Intermittent
Gear," or stop motion, as a means to give an automatic motion to revolving table,
and also to impart a perfectly automatic motion to the feeding arrangement; both
motions being controlled by same gear.
Within these moulds, which may be con-
structed to form six blocks or cartridges, more or less, in the table, simultaneously,
we arrange a corresponding number of tubes or rams to work, from the lower end
of which, hangs a hollow or chambered weight.
The upper end of the tubes being enlarged so as to fit closely the openings
within the mould; upon the underside of each mould is fitted a gland which serves
as a guide for the tubes and also to carry the weight when the pressure of the ram
is withdrawn from below. Arranged within this hollow weight is a plate rigidly
suspended from the underside of the revolving table by means of suitable studs or
screws at either end.
Upon the upper surface of this fixed plate are secured a number of studs or pins
disposed centrally within the sliding tubes or rams, so as to form the core or recess
within the blocks or cartridges when compressed.
Beneath this horizontally revolving table we also arrange one or more hydraulic
rams for effecting the compression of the blocks, and also one or more for expelling

page_text: the cartridges when formed; suitable abutments being attached to the main head
piece of press and arranged immediately over the compressing rams to receive the
thrust.
Motion is imparted to this revolving table, as before stated, by means of an
arrangement known as the " Genoa Intermittent Gear" or stop motion, the whole
being so timed as to permit one or more moulds being subjected to the action of
the compressing rams whilst the other moulds are being emptied and re-charged.
In operation the action is as follows:-The powder or other material to be com-
pressed having been filled into the mould, the horizontal table is then caused to
partly rotate by the action of the above device, carrying with it the charged mould
until it arrives immediately over the compressing rams, and beneath the abutment
or thrust blocks. The charge is then first subjected to pressure by the compressing
rams, a second mould or series of moulds being charged at the same time; it, or
they are again carried forward by the revolving of the table until the same arrives
immediately over the expelling or discharging ram, or rams, by which the whole of
the blocks or cartridges are simultaneously forced out and delivered onto the upper
surface of the revolving table.
The remaining moulds having each been filled are carried round and similarly
treated in their turn, thus effecting a continuous automatic charging and discharging
of the moulds.

page_text: COMPLETE
DPECIFICATION.
We, JOHN EBENEZER HOPKINSON, and HENRY PRINCE, both of No 15 Walbrook
in the City of London and County of Middlesex, Engineers, and ANDREW MUIR
of No 2 Walbrook in the City of London, and County of Middlesex, Engineer, do
hereby declare the nature of our invention for "IMPROVEMENTS IN HYDRAULIC
PRESSES FOR COMPRESSING INTO FORM OF CARTRIDGES, CYLINDERS, BLOCKS, AND
OTHER FORMS" 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 certain improvements in construction and general
arrangement of Hydraulic Presses for moulding, feeding, compressing, and
delivering entirely automatically loose powder or any other compressable material
of a similar nature into blocks, hollow tubes or cartridges.
We will now proceed to describe the construction and working of our improved
Hydraulic Press, reference being had to the accompanying Sheets of Drawings,
upon which :-
and
Figure 1. Is an elevation of an Hydraulic Press embodying our improvements,
Figure 2. Is a plan of the same.
In carrying out these improvements we construct an ordinary (double or single
ram) Hydraulic Press, having a circular or other shaped horizontal revolving
table A, in which are inserted various numbers of moulds or dies B B, for the
purpose of compressing cartridges or any other powderous material.
On the top of this Press we arrange the driving shaft C, from which motion is
imparted through a short vertical shaft D, in gear therewith, to a second motion
shaft E, upon this second motion shaft are provided a number of cams F for
effecting the opening and closing of the valves G, and for the purpose of actuating
the feeding mechanism H.
We also secure upon the upper end of the vertical shaft D, carrying the
revolving table A, an arrangement known as the Genoa intermittent gear or stop
motion I, actuated by means of a suitably shaped wheel K, secured upon the short
vertical shaft D.
By this arrangement we are enabled to impart to the revolving table A the
requisite intermittent motion.
Within the moulds B upon the table A, which may be designed to form six or
more blocks or cartridges L simultaneously, we arrange a corresponding number of
tubes or rams M, to work from the lower end of which hangs a hollow or chambered
weight N.
The upper ends of the tubes M being enlarged so as to fit closely the openings
within the moulds B.
Upon the underside of each mould is fitted a gland O, which serves as a guide
for the tubes M, and also to carry the weight N when the pressure of the ram is
withdrawn from below.
Arranged beneath this hollow weight N is a plate P, rigidly suspended from the
underside of the moulds B, by means of suitable studs or screws Q, at either end.

page_text: Upon the upper surface of this fixed plate P are secured a number of studs or
pins R, disposed centrally within the sliding tubes or rams M so as to form the core
or recess within the blocks or cartridges L when compressed.
more
Beneath this horizontally revolving table A we also provide one or
hydraulic rams S for effecting the compression of the blocks L, and also one or
imore rams T for expelling the said blocks or cartridges when formed; suitable
abutments U being attached to the head piece V of the Press and arranged
immediately over the compressing rams S to receive the thrust.
Motion is imparted to this revolving table A, as before stated, by means of an
arrangement known as the Genoa intermittent Gear or stop motion I, the whole
being so timed as to permit one or more moulds B being subjected to the action
of the compressing rams S, whilst the other moulds B are being emptied and
recharged.
In operation the action is as follows.
The powder may be introduced into the moulds by any suitable arrangement,
but I prefer to use either a series of telescopic tubes, or the hopper Y, arranged
immediately over the mould and beneath a pair of crushing rolls Z through which
the powder passes.
.
The amount of powder thus fed into the moulds can be regulated by shortening
or lengthening the telescopic tubes, or by raising or lowering the nuts W on the
rods X, which support the weight N, to which the tubes or rams M are suspended.
The powder or other material to be compressed having been filled into the
moulds B, the horizontal table A is then caused to partly rotate by the action of
the above device, carrying with it the charged mould B, until it arrives immediately
over the compressing rams S, and beneath the abutment or thrust blocks U; the
charge is then first subjected to pressure by the compressing rams S; a second
mould or series of moulds B being charged at the same time; it or they are again
carried forward by the revolving of the table A until the same arrives immediately
over the expelling or discharging ram or rams T, by which the whole of the blocks
or cartridges L are simultaneously forced out and delivered on to the upper surface
of the revolving table A.
In consequence of the particular construction of our moulds, in combination
with the pins R and sliding tubes or rams M, as the latter fall the air within the
mould is driven in an upward direction carrying with it dust or residuum.
The remaining moulds B having each been filled are carried round and similarly
treated in their turn, thus effecting a continuous automatic charging and discharging
of the moulds.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, We declare that what
We Claim is
1° In a Hydraulic Press, the Genoa intermittent stop gear in combination with
the revolving table substantially as described for the purpose set forth.
2° In a Hydraulic Press, the construction and combination of the die or mould B,
with the pins R and sliding tubes or rams M, substantially in the manner described
for the purpose set forth.
3° In combination with our feeding mechanism, the means whereby we are
enabled to regulate the feed from either above or below the revolving table A.
4° A Hydraulic Press constructed combined and arranged to operate substantially
as hereinbefore described and shown on the accompanying Sheets of Drawings.
Dated this Twenty first day of February 1885.