IMPROVED MACHINERY FOR CUTTING AND FINISHING Mama Sanna
Year: 1856

page_text: LETTERS PATENT to William Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer, for
the Invention of "IMPROVED MACHINERY FOR CUTTING AND FINISHING
Mama Sanna" A communication
Sealed the 3rd February 1857, and dated the 18th August 1856.
PROVISIONAL SPECIFICATION left by the said William Edward Newton,
at the Office of the Commissioners of Patents, with his Petition, on the
18th August 1856.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane,
in the County of Middlesex, Civil Engineer, do hereby declare the nature of
the said Invention for "IMPROVED MACHINERY FOR CUTTING AND FINISHING METAL
SCREWS," to be as follows:-
The nature of the present Invention consists in the construction of a slido
rest having a slide cutter tool working thereon, and combining them with a
hollow box, into the axis of which the end of the wire to be operated upon is
inserted, and shaped and finished by the cutting tool; also in combining with
the box for holding and supporting the end of the wire a set of "snap " dies
for cutting the threads of the screw; and, lastly, in combining and arranging
the slide cutter rest and slide cutter tool, with the box for holding the wire
and dies for cutting the threads upon the screw preparatory to their being
severed or detached from the stump of the wire.

page_text: The operation of the machine is as follows:-When the wire is adjusted in
the lathe, and inserted in the hollow axis of the box, so that the end of it rests
against the face of the die stocks, the cutter is projected forward by means of
the handle of a lever, to bring it in contact with the wire to reduce it to the
required shape for the screw, its diameter being governed or gauged by means
of the set of the gauging screw acting upon or against a stud to prevent the
cutter tool from any further advance. When the shape of the screw has been
cut the handle on the lever is let go, and the cutter tool is drawn back. The
shank of the screw is then forced into the die, which cuts the threads upon it.
During this operation of cutting the threads the end of the screw comes in
contact with the adjusting screw in the clamps, and as it is graduated to corre-
spond to the length of the thread cut on the screw it gradually pushes the
clamp back till the point or time of finishing the screw, when the clamp slips
off the die stocks and allows them to open so as to avoid damaging the thread,
and at the same time allow the new made screw-as soon as cut off by the
cutter tool (in the operation of cutting or shaping another screw) to fall from
the machine, when the operator with his hand readjusts the clamps on the die
stocks as before, for cutting the threads on the new screw to be formed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Edward Newton in the Great Seal Patent Office
on the 17th February 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the County
of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing dato the Eighteenth day of August, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Edward Newton, Her special license that I, the said William
Edward Newton, my executors, administrators, and.assigns, or such others as
I, the said William Edward Newton, 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 of "IM-
PROVED MACHINERY FOR CUTTING AND FINISHING METAL SCREWS," being a

page_text: communication from abroad, upon the condition (amongst others) that I,
the said William Edward Newton, 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 William Edward Newton, do hereby
declare the nature of the 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 Drawings hereunto annexed,
and to the letters and figures marked thereon (that is to say) :-
:-
The nature of this Invention, which has been communicated to me by my
foreign correspondent, is described by him as consisting in the construction of
a slide rest having a slide cutter tool working thereon, such parts being com-
bined with a hollow box, into the axis of which the end of the wire to be
operated upon is inserted, and is shaped and finished by the cutting tool.
The Invention also consists in combining with the box for holding and
supporting the end of the wire a set of "snap dies" for cutting the threads of
the screw; and, lastly, in combining and arranging the slide cutter rest and
slide cutter tool with the box for holding the wire and dies for cutting the
threads upon the screw preparatory to their being severed or detached from the
stump of the wire.
In order, however, that the improved machinery may be more clearly under-
stood, I will refer to the accompanying Drawings, forming a part of this
Specification, the same letters of reference whenever they occur referring to
like parts.
Fig. 1 is a sectional plan view of the machine; Fig. 2 is a longitudinal
section of the same with some of the parts removed; Fig. 3 is a transverse
vertical section of the snap dies and box for holding the wire; and Fig. 4 is a
detached face view of the
snap dies.
.
A represents the slide rest made of metal, and having a handle attached to
it. Upon its upper side is arranged a sliding cutter tool B, by means of screws
6, 6, passing vertically through the sliding cutter tool B, and through a slot,
and secured in the slide rest A, so that the cutter tool may have a reciprocating
motion given to it by means of a lever C, mounted on a centre pin D, in the
lugs or brackets d², on the lower side of the slide rest, and operated by the
handle E, attached to the lever C. To bring back the cutter tool slide a
spring F attached to the slide rest acts against a stud f' on the cutter tool
slide, and forces it back immediately the handle is let go. G is an adjusting

page_text: screw secured to a shank on the side of the cutter tool slide, for the purpose of
regulating the diameter of the screw to be cut, by means of the set of the
screw, so as to come in contact with a stud g³ upon the upper end of the rest A,
and thereby prevent the cutter tool from having any further forward motion.
His a hollow axle wire holder box attached to the end of the slide rest A, and
having its axis at right angles to the slide rest, so as to support or hold the end
of the wire during the operation of turning or cutting down to shape or form
the screw. Secured to the top of the box H is a die cutter holder I, and to
its lower side is a bracket J, for guiding and holding the lower ends of the
dies for cutting the screws. K represents the dies for cutting the threads upon
the screws, as shewn at the point (Figs. 3 and 4). These dies are jointed
at their upper ends, and attached by a centre pin 1 to the face of the die cutter
holder I, so as to bring the point of the dies directly on a line with the axis
of the box H. Between the edges of the die stocks is secured a spring L, for
opening the die stocks after the thread of the screw has been cut, so as to let
it fall from the machine. M is a die stock clamp, suspended at its upper end
by ear pieces on the die cutter holder I to the back side of the die stocks, so
that its claw or clamping end will clasp the lower ends of the die stocks to hold
it closed while the thread is being cut on the screw. To the back of the clamp
is a spring N, secured at its upper end to the head of the clamp, and having
its elastic point resting against the middle bar of the clamp M, for the purpose
of holding it firmly upon the die stock. P is a set screw, passing through the
middle bar of the clamp M, for the purpose of regulating the length of the
screw to be cut. The end of the wire by pressing against the end of the set
screw P forces the clamp off from the die stock, and thereby lets the new made
screw fall as soon as cut off by the sliding cutter tool to make room for the
succeeding screw to be made.
The operation of the machine is as follows:-When the wire is adjusted in
the lathe, and the end is inserted in the hollow axis of the box H, so that it
rests against the face of the die stocks, the cutter is projected forward by means
of the bandle of the lever C, so as to bring it in contact with the wire to reduce
it to the required shape for the screw; its diameter being governed or gauged
by means of the set of the gauging screw acting upon or against the stud, so
as to prevent the cutter tool from any further advance. When the shape of
the screw has been cut the handle on the lever C is let go, and the cutter tool
is drawn back. The shank of the screw is then forced into the die, which cuts
the threads upon it. During this operation of cutting the threads the end of
the screw comes in contact with the adjusting screw in the clamps, and as it is
graduated to correspond to the length of the thread cut on the screw it gradually

page_text: pushes the clamp back till the point or time of finishing the screw, when the
clamp slips off the die stocks, and allows them to open so as to avoid damaging
the thread, and at the same time allow the new made screw as soon as cut off
by the cutter tool (in the operation of cutting or shaping another screw) to fall
from the machine, when the operator with his hand readjusts the clamps on
the die stocks as before, for cutting the threads on the new screw to be formed.
Having now described the improved machinery for cutting screws, which
has been communicated to me by my foreign correspondent as aforesaid, I
claim and desire to secure by Letters Patent,-
First, the use of the combination of the slide rest and sliding cutter tool
arranged and operating as set forth, and their combination with the hollow
axle wire holder box.
Second, I claim the use of the hollow axle wire holder box in combination
with the dies and clamps.
Third, I claim the use of the combination of the slide rest and sliding cutter
tool with the hollow axle wire holder box and "snap" dies, the same being
used as a combination for cutting and finishing screws.
In witness whereof, I, the said William Edward Newton, have hereunto
set my hand and seal, the Twelfth day of February, in the year of our
Lord One thousand eight hundred and fifty-seven.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
W. E. NEWTON. (L.S.)