IMPROVE- MENTS IN OR ADDITIONS TO APPARATUS EMPLOYED IN THE PRODUCTION OF LEAD, LEAD-ENCASED BLOCK TIN, AND OTHER SOFT METAL PIPES FROM INGOTS
Year: 1870

page_text: LETTERS PATENT to Norman Stewart Walker, of Liverpool, in the
County of Lancaster, Merchant, for the Invention of "IMPROVE-
MENTS IN OR ADDITIONS TO APPARATUS EMPLOYED IN THE PRODUCTION OF
LEAD, LEAD-ENCASED BLOCK TIN, AND OTHER SOFT METAL PIPES FROM
INGOTS."
Sealed the 2nd May 1871, and dated the 5th November 1870.
PROVISIONAL SPECIFICATION left by the said Norman Stewart Walker
at the Office of the Commissioners of Patents, with his Petition,
on the 5th November 1870.
I, NORMAN STEWART WALKER, of Liverpool, in the County of
Lancaster, Merchant, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN OR ADDITIONS TO APPARATUS EMPLOYED IN THE PRODUCTION
OF LEAD, LEAD-ENCASED BLOCK TIN, AND OTHER SOFT METAL PIPES FROM INGOTS,"
to be as follows:-
In the manufacture of lead, lead-encased block tin, composition tin,
and other soft metal pipes as hitherto carried on by the use of that class
of apparatus in which pressure is applied to the ingot and the pipes or
piping are formed by exudation of the metal through a die, considerable

page_text: time is lost after the working out of an ingot, and during the placing
of a fresh one, in consequence of the necessity for lowering the top of the
ingot container below the die holder a distance equal at least to the
length of the ingot.
With the object of rendering the lowering of the ingot container the
distance above mentioned unnecessary, I have devised and perfected
improvements or appliances by which it is only necessary to lower the
ram and container until the top of the latter is clear of the die holder,
hence a saving of power, labour, and time is effected, and manufacturers
are enabled to produce by an addition to or alteration of the apparatus
now in use or similar apparatus a larger quantity of pipe in the same
time, or, stated in another way, the same quantity in less time.
For the purposes mentioned I fit the ingot container over the ram in
such manner that it can be moved laterally as well as up and down
with the ram, or I fit the die holder in such manner that it can be
moved laterally, and in either case I provide means by which they can
be adjusted centrally. If desired, both the ingot container and die
holder of the same apparatus can be made movable laterally, but this is
scarcely necessary in practice. When the ingot container is movable I
prefer to fit it to a swinging bracket or frame passed around an upright
carrier, preferably one of the pillars of the press, but it will be obvious
horizontal moving carriers, horizontal levers whereon the said ingot
container could be pushed or drawn, trucks on rails, and other
apparatus could be used. The outer bottom of the ingot container is
so formed that it fits into recesses on the ram head or follower, & is
thereby adjusted centrally, or it is provided with catches, projections, or
other means to adjust it in position. When the die holder is movable:
it is fitted to a hinge at one side, or arranged to move in a slide in the
stationary thrust part, or otherwise left free: to be moved, a screw or
other means being provided to adjust it in position.
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Norman Stewart Walker in the Great Seal Patent
Office on the 5th May 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, NORMAN
STEWART WALKER, of Liverpool, in the County of Lancaster, Merchant, 3
send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of November, in the year
of our Lord. One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Norman Stewart Walker, Her special
licence that I, the said Norman Stewart Walker, my executors, adminis-
trators, and assigns, or such others as I, the said Norman Stewart
Walker, my executors, administrators, and assigns, should at any time
ágrce 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 OR ADDITIONS TO APPARATUS EMPLOYED IN THE PRODUCTION
OF LEAD, LEAD-ENCASED BLOCK TIN, AND OTHER SOFT METAL PIPES FROM INGOTS,"
upon the condition (amongst others) that I, the said Norman Stewart
Walker, 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 Norman Stewart Walker, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Sheet of illustrative Drawings, and to the letters and figures of
reference marked thereon, that is to say :-
In the manufacture of lead, lead-encased block tin, composition tin,
and other soft metal pipes, as hitherto carried on by the use of that
class of apparatus in which pressure is applied to the ingot, and the
pipes or piping are formed by exudation of the metal through a die,
considerable time is lost after the working out of an ingot, and during
the placing of a fresh one, in consequence of the necessity for lowering
the top, of the ingot container below the die holder a distance equal at
least to the length of the ingot.
With the object of rendering the lowering of the ingot container the
distance above mentioned unnecessary I have devised and perfected
improvements or appliances by which it is only necessary to lower the

page_text: equivalents on the ram serve to adjust each ingot container centrally and
ensure that it can be lowered with the ram when an ingot or charge
has been worked off. The lowering of an ingot container with the ram
is a matter securing considerable saving in practical working. 8 is a
screw bolt fitting into a groove in the block 9 to support the said block
and the ingot resting on it when clear of the top of the ram, by un-
screwing 8 the block piece 9 and fag end of the ingot are free to fall out,
this saves forcing out the fag end by a special ram; 10 is the die holder
shewn secured in the ordinary manner. One of the ingot containers is
shewn with the ram rising towards it, and the other swung laterally
outwards into position to receive an ingot or charge of metal.
Fig. 3 is a vertical section through E, F; and Fig. 4 a horizontal
section through G, H, of a portion of a hydraulic press fitted with two
ingot containers capable of being moved horizontally. Here 11 are the
pillars; 12, frame secured to the pillars; 13, ingot carrier capable of being
slid in 12 so as to allow the ingot containers 14 to be worked alternately;
15, flanges on the containers fitting into recesses in 13 to adjust the
containers centrally; 16, catches to cause 14 to rise and fall with the
ram; 16*, catch for adjusting.
Fig. 5 is a view in elevation and section of part of hydraulic apparatus
with two ingot containers movable laterally on rails. 17, pillars; 18,
ram with recess in its upper surface; 19, table with rails; 20, ingot
containers; 21, wheels carrying the containers. In this arrangement
as in those shewn by Figs. 1, 2, 3, and 4, the ingot containers are
intended to be worked alternately.
Fig. 6 is a horizontal section of part of a hydraulic press, shewn with
one ingot container arranged to be moved laterally on horizontal levers
or bars; 22, pillars; 23, frame; 24, ingot container with side pieces
resting on the horizontal levers or bars 25. These levers or bars may be
arranged to move on or with pins, as at 26, and the other ends operated
by a screw jack, winch, or other purchase.
Fig. 7 is a side elevation; Fig. 8 a transverse section; and Fig. 9 a
horizontal section at the line E, F, all of part of a hydraulic press
shewing an arrangement in which the die holder can be moved laterally
by a sliding motion. 27 are the pillars; 28, top piece; 29, dovetail way
piece secured to 28; 30, sliding piece to which the die holder is secured;
31 is a set screw for adjusting the die holder centrally.

page_text: Fig. 10 is a view in vertical section and elevation of a hydraulic press
in which the ingot container 32 is shewn fixed to the ram 33, and the
die holder 34 is movable laterally on the hinge or pin 35; 36, bolt for
adjusting, and fixing the die holder; 37, pillars; 38, bottom piece;
39, top piece. The fag end of an ingot can be most conveniently
removed in this modification by a ram such as is now in use entering
the ingot container from below and ejecting it at the top. I would
have it understood, however, that this arrangement is not so advan-
tageous as the modifications shewn by Figs. 1, 2, 3, 4, 5, and 6, and
particularly Figs. 1 and 2.
Having now described the nature of my said Invention, and parti-
cularized the same in such manner that others will be enabled to carry
my improvements into effect, I claim, the apparatus constructed
substantially in the manner herein described and illustrated on the
Drawings when operating substantially as mentioned for the purpose set
forth.
In witness whereof, I, the said Norman Stewart Walker, have
hereunto set my hand and seal, this Third day of May, in the
year of our Lord One thousand eight hundred and seventy-
one.
In the presence of
J. T. KING,
Patent Agent,
Liverpool.
NORMAN STEWART WALKER. (L.S.)