IMPROVEMENTS IN PORTABLE HYDRAULIC PUNCHING MACHINES
Year: 1863

page_text: LETTERS PATENT to Joseph Tangye, of the Firm of Tangye Brothers
and Price, of Birmingham, in the County of Warwick, Manufacturers,
for the Invention of "IMPROVEMENTS IN PORTABLE HYDRAULIC PUNCHING
MACHINES."
Sealed the 21st August 1863, and dated the 14th March 1863.
PROVISIONAL SPECIFICATION left by the said Joseph Tangye at the
Office of the Commissioners of Patents, with his Petition, on the 14th
March 1863.
I, JOSEPH TANGYE, of the Firm of Tangye Brothers and Price, of
Birmingham, in the County of Warwick, Manufacturers, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN PORTABLE HYDRAULIC
PUNCHING MACHINES," to be as follows:-
My Invention consists of the improvements herein-after described in
portable hydraulic punching machines for punching holes in boiler plates
and ship plates, and for other like purposes. The cylinder in which the ram
works is situated vertically, and is open at bottom. The said cylinder is con-
nected with the rest or support which carries the fixed punching tool by means
of a strong bracket or junction of a nearly semicircular figure. The upper or
moveable punching tool is fixed to the bottom of the ram, and projects from
the open bottom of the cylinder. The pump is situated horizontally at the
top of the cylinder, and is fixed in the reservoir containing the water or other
liquid with which the machine is worked. The said reservoir is supported at

page_text: the upper part of the before-mentioned bracket or junction. The descent of
the ram and moveable punching tool is effected by working the handle of the
pump. The ascent is effected in the following manner:-The pump is so
constructed that by moving its handle beyond the point to which it is required
to be moved in working the pump the valves of the pump are opened, and
the liquid may pass from the cylinder through the pump to the reservoir. In
order to lift the ram, a lever is made to turn on an axis on the side of the
cylinder. A cam on the said axis engages in a recess in the side of the ram,
and by depressing the lever the said cam raises the ram. The form of the
cam is such that it does not impede the descent of the ram.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Tangye in the Great Seal Patent Office on the
27th August 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPII
TANGYE, of the Firm of Tangye Brothers and Price, of Birmingham, in the
County of Warwick, Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of March, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Joseph Tangye, Her special licence that I, the said Joseph Tangye, my
executors, administrators, and assigns, or such others as I, the said Joseph
Tangye, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN PORTABLE
HYDRAULIC PUNCHING MACHINES," upon the condition (amongst others) that I,
the said Joseph Tangye, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I, the said Joseph Tangye, do hereby declare
the nature of the said Invention, and in what manner the same is to

page_text: be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
My Invention consists of the improvements herein-after described in
portable hydraulic punching machines for punching holes in boiler plates
and ship plates, and for other like purposes. The cylinder in which the
ram works is situated vertically, and is open at bottom. The said cylinder is
connected with the rest or support which carries the fixed punching tool by
means of a strong bracket of a nearly semicircular form.
The upper or
moveable punching tool is fixed to the bottom of the ram, and projects from
the
open bottom of the cylinder. The pump is situated vertically or horizontally
at the top of the cylinder, and is fixed in the reservoir containing the water or
other liquid with which the machine is worked. The said reservoir is supported
at the upper part of the cylinder. The descent of the ram and moveable
punching tool is effected by working the handle of the pump. The ascent is
effected in the following manner:-The pump is so constructed that by
moving its handle beyond the point to which it is required to be moved in
working the pump the valves of the pump are opened, and the liquid may
pass from the cylinder through the pump to the reservoir. In order to lift
the ram, a lever is made to turn on an axis on the side of the cylinder. A
cam on the said axis engages in a recess in the side of the ram, or with a
shoulder on the said ram, and by depressing the lever the said cam raises the
ram. The form of the cam is such that it does not impede the descent of
the ram.
Having explained the nature of my Invention, I will proceed to describe
with reference to the accompanying Drawing the manner in which the same
is to be performed.
Figure 1 represents a front elevation of a portable hydraulic punching
machine constructed according to my Invention, and Figure 2 is a vertical
section of the same, the parts of the said machine; Figures 1 and 2, being in
the positions which they respectively assume when the punch has been raised
from the lower die; Figure 3 represents a section of the said machine, the
parts being in the positions which they respectively assume when the punch
has been brought down upon the lower die, and Figure 4 is a plan of the said
machine. The same letters of reference are used to indicate corresponding
parts in the several Figures of the Drawing.
a is the hydraulic cylinder of the machine, in which said cylinder the ram b
works, to the bottom of which ram the punch c is secured by the screw pin d.
The ram 6 is made to work water-tight in the cylinder a by means of a cupped
leather packing on its top, the said packing being fastened in its place by

page_text: the screw i and disk k. The cylinder a is made by boring out the body e, the
said body e having a nearly semicircular figure laterally, so as to form a strong
curved bracket, which carries the fixed die or punching tool f. Between the
bottom of the cylinder a and upper side of the tool fan opening or gap g is made,
to permit of the introduction of the plates or sheets to be punched. On the
top of the cylinder a the cistern or reservoir is fixed, the said reservoir being
screwed into the interior of the said cylinder, as represented. The reservoir
is closed by a top or cover 12. The junction of the reservoir with the cylinder
is made water-tight by the cupped leather packing represented, similar to the
packing on the top of the ram b. An opening is bored in the axis of the
lower part of the reservoir l, and the said opening is screwed. Into the said
opening the pump m is screwed, as represented in the Drawing. The con-
struction and action of the pump m are as follows:-A passage is bored out
in the pump m from end to end, and in the bottom part thereof the plug n is
fitted, the conical end of which plug bears on the seat n³, being kept thereon
by the helical spring n³. The top of the said plug n is provided with a cupped
packing, fixed in its place by the hollow set screw n', to prevent the escape of
water between the said plug and the opening in the pump. In the axis of
said plug n is the exit valve o, kept to its seat by the small helical spring o.
A perforated disk held against the bottom of the pump by the helical spring o³
supports the spring o² of the valve o. p is the plunger of the pump, the upper
end of which works in the cover l'of the reservoir l. In the axis of the lower
part of the said plunger p the inlet valve q is situated, the said valve q being
kept on its seat by the helical spring g, the upper part of which spring is
fastened to the plunger by a pin passed across it. The pump takes in water
through the hole r opening into the reservoir 1, the said hole being situated
about the middle of the liquid; the machine can be worked in any position.
The entrances to the exit and inlet valves o, q, are provided with disks of wire
gauze, thus preventing injury to the seats of the said valves by dirt. The
pump is actuated by means of the hand levers on one end of the axis or
shaft t. The end of the said axis situated in the reservoir has a tongue
lever or cam u, on which it works in an opening in the plunger p. By the
motion of the said hand levers the plunger p is made to rise and fall, and
water is forced from the reservoir through the valves 9 and o into the
cylinder a. The ram b and punch c carried by it are thereby made to descend,
and the said punch punches a hole in the sheet or plate situated on the fixed
dief. The descending motion of the hand levers is limited by the stop pin
on the side of the reservoir 7. A hole having been punched in the plate or
sheet, the ram b is raised in the following manner:-The hand lever s is

page_text: capable of sliding on its shaft or axis from the reservoir l, so that on descending
it shall escape the stop pin v. The hand levers having been thus moved on
its axis, the said band lever is depressed below the stop pin v, the plunger. p is
thereby made to descend, and the inlet valve 9 at its bottom brought into
contact with the set screw n' on the top of the plug n. The said plug n is
thereby forced from its seat, and the water in the cylinder a permitted to
return through the waterway w in the side of the pump m to the reservoir l.
The pressure on the ram 6 being thus removed, the said ram is raised into the
position represented in Figure 2 by the cam x. The said cam x is situated
on the end of the axis y worked by the lever z. The said cam x is so shaped
that when it is turned into the position represented in Figure 3, it does not
impede the descending motion of the ram, but when in this last position, the
said cam by giving a semi-rotation to it can be made to raise the said ram, as
represented in Figure 2. The manner in which the said cam & engages under
the shoulder of the ram will be readily understood by an examination of the
Drawing. In order to regulate the length of the stroke of the ram, and
prevent any strain on the body of the machine after the required stroke has
been obtained, I attach to the head of the exit valve o a small metal rod 2,
the said rod passing through the axis of the screw i.
a screw, and upon the said screwed rod the lock
nuts 3 are so adjusted on the rod 2 that the distance between them and the
bottom of the screw i is equal to the length of the stroke which the ram is
required to make. By this arrangement when the ram b has given the
required stroke, the bottom of the screw i strikes against the nuts 3, the exit
valve o is thereby forced from its seat, and the further action of the pump
upon the ram is prevented.
The rod 2 is made into
nuts 3 work. The said
Although I have described and represented the arrangement of pump and
parts connected therewith which I prefer to employ in my improved hydraulic
punching machine, yet a pump differently constructed from that described and
represented may be substituted therefor with the same or nearly the same
effect, the other arrangement of parts remaining the same.
Having now described the nature of my Invention, and the manner in
which the same is to be performed, I wish it to be understood that I do not
limit myself to the precise details herein described, as the same may be varied
without departing from the nature of my Invention; but I claim as my
Invention,―
Firstly, arranging or combining the parts of portable bydraulic punching
machines, essentially in the manner herein-before described and illustrated in
the accompanying Drawing.

page_text: Secondly, the improvement in raising the rams of portable hydraulic
punching machines, herein-before described and illustrated in the accom-
panying Drawing, that is, by means of a cam worked by a lever made to
engage with a shoulder or recess in the ram, the said cam on a partial rotation
being given to it permitting of the descent of the said ram.
In witness whereof, I, the said Joseph Tangye, have hereunto set my
hand and seal, this Twenty-first day of August, in the year of our
Lord One thousand eight hundred and sixty-three.
Witness,
GEORGE SHAW.
JOSEPH TANGYE. (L.s.)