CERTAIN IMPROVEMENTS IN APPARATUS OR MACHINES FOR FORGING, DRAWING, MOULDING, OR FORMING SPINDLES, ROLLERS, T ".
Year: 1854

page_text: LETTERS PATENT to John Platt, of Oldham, in the County of Lancaster,-
Machinist, for the Invention of "CERTAIN IMPROVEMENTS IN APPARATUS OR
MACHINES FOR FORGING, DRAWING, MOULDING, OR FORMING SPINDLES, ROLLERS,
T
"
.
PROVISIONAL SPECIFICATION left by the said John Platt at the Office
of the Commissioners of Patents, with his Petition, on the 12th May
1854.
I, JOHN PLATT, of Oldham, in the County of Lancaster, Machinist, do
hereby declare the nature of the said Invention for "CERTAIN IMPROVEMENTS IN
APPARATUS OR MACHINES FOR FORGING, DRAWING, MOULDING, OR FORMING SPINDLES,
ROLLERS, BOLTS, AND VARIOUS OTHER ARTICLES IN METAL," to be as follows:-
This Invention relates to improvements upon that principle of apparatus
or machine for the above-mentioned purposes, known as "Ryder's forging
machine." It consists, first, in an arrangement by which the springs (either
internal or external) hitherto used for lifting the hammer after the blow has
been struck, and for keeping the "cradle" in contact with the excentric, are
dispensed with. This is accomplished by connecting the hammer with the
excentric, so that it will lift it as well as force it down.
Secondly, in the addition of mechanism, by which the under or bottom swage
and block can be raised or lowered during the operation of forging, and while
the machine is at work, which movement is found necessary in forging a

page_text: certain class of articles; this is accomplished by an incline and wedge, which
may have motion imparted to it backwards and forwards for this purpose by
means of a screw, pinion, and wheel, or by any other mechanical contrivance,
the wedge acting upon the end of the piston which acts against the spring
within the swage block.
Thirdly, in an arrangement by which the same lower swage can be regulated
to forge taper as well as parallel work. It is accomplished by making the
swage and block to move round a centre from the perpendicular to oblique
positions.
Fourthly, in an arrangement of mechanism for adjusting the bottom or
under swage and block. This is accomplished by an arrangement similar to
that referred to in the second part of this Invention, but as it is only employed
for adjustment, no wheel and pinion or lever system are required, and the screw
need only act to force the incline forward so as to rise the block and swage.
This adjustment has been hitherto accomplished by screws and check nuts,
which having to sustain the shock of the hammer are very liable to get out of
repair. The general effect of these improvements is to diminish the wear and
tear of the machines, and to render them capable of being employed in a
heavier class of work. than has been hitherto practicable.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Platt in the Great Seal Patent Office on the 9th
November 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
PLATT, of Oldham, in the County of Lancaster, Machinist, send greeting.
-
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of May, One thousand eight hundred
and fifty-four, in the seventeenth year of Her reign, did, for Herself, Her
heirs and successors; give-and grant unto me, the said John Platt, Her
especial licence that I, the said John Platt, my executors, administrators,
and assigns, or such others as I, the said John Platt, 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 ex-
pressed, 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 "CERTAIN IMPROVEMENTS IN APPARATUS OR MACHINES

page_text: FOR FORGING, DRAWING, MOULDING, OR FORMING SPINDLES, ROLLERS, BOLTS, AND
VARIOUS OTHER ARTICLES IN METAL," upon the condition (amongst others)
that I, the said John Platt, by an instrument in writing under my hand
and seal, 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 John Platt, 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,
and accompanying Drawing (that is to say):-
:-
This Invention relates to improvements upon that principle of apparatus
or machine known as "Ryders forging machine." The first improvement
consists in an arrangement whereby the springs (either internal or external)
hitherto used for lifting the hammers after the blow has been given, and for
keeping the cradle picces in contact with the excentrics, are dispensed with,
which is accomplished by connecting the hammer with the excentric, so that it
will lift it as well as force it down. This is explained in the Drawing by
Fig. 1, which is a cross sectional elevation through a hammer and lower swage
block. a is the framing of the machine; a', parts of the frame in which
the hammers b, and swage blocks c, move up and down. b' is the piece which
corresponds with the "cradle piece" hitherto employed; it acts in every respect
in like manner to the "cradle piece," to force down the hammer b, which is
raised by the excentric d, which is fitted into a pair of steps, and is connected
to the cradle by means of straps 62, 62, which pass over them and through a
hole in the hammer (as shewn); the part against which the lower strap be
bears being shaped to be concentric to the centre of oscillation of the cradle
piece b. The straps 62, 63, are tightened, to keep the hammer against the
cradle piece, and the cradle piece against the excentric d, by gibs and cotters
g, passing through the straps and a slot in the cradle piece.
The second improvement consists in the addition of mechanism by which
the under or botton swage and block (c) can be raised or lowered during the
operation of forging, which movement is found necessary in forging a certain
class of articles. It is accomplished by an incline and wedge, which may have
motion imparted to it backwards and forwards by a screw, pinion, and wheel,
or other mechanical contrivance. This improvement is shewn in the Draw-
ing by a part sectional elevation, Fig. 2. c is the lower swage block; c',
the piston which acts against the spring or elastic material within the swage
block c, forming the buffer; e, the incline piece fixed on the bottom cross

page_text: bar (a) of the machine, or cast with it; f, the wedge; g, a screw retained in
the arm (e) from the incline, and screwing into the wedge f; g', pinion on
the end of the screw g, which works in a wheel h, fixed on a stud in the arm e¹,
and having a handle h* to revolve it; by giving motion to the wheel h, the
incline or wedge has a backward or forward motion imparted to it, and the
swage block is thus raised or lowered at will.
The third part of my Invention consists in certain mechanical arrangements,
by which the lower swage can be regulated so as to forge taper as well as
parallel work during the operation of forging, and is accomplished by so
arranging the swage that it can be moved from perpendicular to oblique posi-
tions, so as to suit the work required. One of the arrangements for effecting
this I have shewn by Figs. 3, 4, and 5. Fig. 3 represents a cross sectional
elevation; Fig. 4, a front view; and Fig. 5, a plan sectional view below the
line A, B, Fig. 4. C is the under swage block, which has its buffers, adjusting
screws, and other parts as in "Ryders machine;" a¹ is the socket box, into
which the swage block fits, and it is provided with two centres or axes resting
with their pivots in the sliding frame a², a³, at a¹x; the bottom part of the
socket box a¹ is a segment of a circle, the curve of which is struck from the
centres or axes a¹x, and fits into the lower part (a) of the sliding frame, which
is turned to receive it. The sliding frame is formed of three pieces, two sides
(a) and a bottom (a³), which are screwed together by the bolts a³, and it fits
into vertical grooves (a) formed in the side framing of the machine, and can
be moved vertically, so as to suit the thickness of the work required, the ver-
tical movement being effected by means of the incline or wedge f and screw
as shewn in Figs. 1, 3, and 4, and described in the fourth part of my
Invention.
The fourth improvement consists in an arrangement of mechanism for
adjusting the lower swage and block, which has been hitherto accomplished by
screws and check nuts, which having to sustain the shock of the hammer are
very liable to get out of repair. It is accomplished by an arrangement similar
to that referred to in the first portion of the second part of this Invention; but
as it is only employed-for adjusting, no wheel and pinion or other mechanism
are required, as the screw need only act to force the wedge-forward to raise the
swage block. This improvement is shewn in the Drawing at Fig. 1, f being
the wedge (upon which packing pieces f¹ may be placed), and the incline
g, screw, to force forward the wedge. This mode of adjusting the lower swage
block c may also be used in machines combining the improvements shewn by
Figs. 3, 4, and 5; the wedge here acts on a piece on the under side of the
swage block frame a, a, which is inclined. As Ryders forging machine is
;

page_text: well known, I have not thought it necessary to shew in the Drawing more of
the parts than sufficient to describe my improvements. I have used the same
letters and figures of reference on similar and corresponding parts in each
Figure of the Drawing.
Having now described the nature of my Invention, and some of the modes
by which it may be carried into effect, I wish it to be understood that I claim
as my Invention,―
Firstly, the mode of connecting the hammer or upper swage with its excen-
tric, so as to lift it as well as force it down, and thus dispense with springs for
lifting it, as herein described in the first part of my Invention, and shewn in
the Drawing.
Secondly, the mode of raising and lowering the swage block by an incline
and wedge, as herein described in the second part of my Invention.
Thirdly, the mode of altering the position of the swage, by which the same
swage can be used for either parallel or taper work, and as described in the first
part of my Invention.
Fourthly, the mode of adjusting the lower swage and block by an incline
and wedge, as described in the fourth part of my Invention.
In witness whereof, I, the said John Platt, have hereunto set my hand
and seal, this Seventh day of November, in the year of our Lord One
thousand eight hundred and fifty-four.
TAUN DI AVE
JOHN PLA
(2.0.)