IMPROVE- MENTS IN MACHINERY FOR CARVING WOOD, METAL, MARBLE, OR OTHER MATERIAL TO THE SHAPE OF A PATTERN
Year: 1866

page_text: LETTERS PATENT to William Walker Marston, of the City and Stato
of New York, United States of America, for the Invention of "IMPROVE-
MENTS IN MACHINERY FOR CARVING WOOD, METAL, MARBLE, OR OTHER
MATERIAL TO THE SHAPE OF A PATTERN,"
Sealed the 16th April 1867, and dated the 13th November 1866.
PROVISIONAL SPECIFICATION left by the said William Walker Marston
at the Office of the Commissioners of Patents, with his Petition, on the
13th November 1866.
I, WILLIAM WALKER MARSTON, of the City and State of New York,
United States of America, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN MACHINERY FOR CARVING WOOD, METAL, MARBLE, OR OTHER
MATERIAL TO THE SHAPE OF A PATTERN," to be as follows:-
The object of this Invention is to effect the carving of letters, furniture, picture
frames, scroll or relief work, countersunk figures, shapes, or designs in woods,
marbles, or metal, or to carve busts, medallions, or other work of art in which
a pattern corresponding to the article to be produced is employed. A tracing
instrument is used to follow the pattern, and a rapidly revolving tool is used to
effect the cutting or carving.
This Invention relates to a bed for carrying both the article to be carved
and the pattern, and having an end wise movement at right angles to the plane

page_text: in which the cutter and tracer move, in combination with three or more
universally jointed parallel arms connecting at one end to a stationary frame
and at the other end to the head, upon which are mounted the cutter and
tracer. By this combination of mechanism the tracer can be guided by hand,
so as to follow a pattern with the greatest ease and accuracy, because the
universally jointed arms move with so little friction, the same movement
directing the revolving cutting tool with equal accuracy in effecting the
carving.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Walker Marston in the Great Seal Patent Office
on the 11th May 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WALKER MARSTON, of the City and State of New York, United States of
America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of November, A.D. One thou-
sand eight hundred and sixty-six, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said William Walker Marston, Her special license that I, the said William
Walker Marston, my executors, administrators, and assigns, or such others
as I, the said William Walker. Marston, 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 MACHINERY FOR CARVING WOOD, METAL,
MARBLE, OR OTHER MATERIAL TO THE SHAPE OF A PATTERN," upon the condition
(amongst others) that I, the said William Walker Marston, 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 Walker Marston, 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

page_text: following statement, reference being had to the Drawing hereunto annexed,
and to the letters and figures marked thereon (that is to say) :-
1
Fig. 1 is a plan of the machine; Fig. 2 is an elevation at the line x, x;
Fig. 3 is an elevation of the head with the cutter and tracer, and Fig. 4 an
elevation of the head with the arms in section at the line y, y; similar letters
refer to like parts.
The object of this Invention is to effect the carving of furniture, picture
frames, letters, scroll or relief work, countersunk figures, shapes or designs in
woods, marbles, or metal, or to carve busts, medallions, or other work of art
in which a pattern corresponding to the article to be produced is employed.
A tracing instrument is used to follow the pattern, and a rapidly revolving
tool is used to effect the cutting or carving.
This Invention relates to a bed for carrying both the pattern and article to
be carved, and having an endwise movement at right angles to the plane in
which the cutter and tracer move, in combination with three or more
universally jointed parallel arms connecting at one end to a stationary frame
and at the other end to the head upon which are mounted the cutter and
tracer. By this combination of mechanism the tracer can be guided by hand
so as to follow a pattern with the greatest case and accuracy, because the
universally jointed arms move with so little friction, the same movement
directing the revolving cutting tool with equal accuracy in iffecting the
carving.
I provide a suitable fiame a, upon which are slides receiving the bed b that
is fitted to be moved endwise by a crank and pinion, a screw, or any other
suitable means, and this bed 6 carries the pattern and also the article to be
carved. At one end of the frame a are standards a carrying the vertical
frame c that is adjustable vertically on said standards by the screw c³, and to
this frame c are connected the back ends of the universally jointed parallel
arms d, d, & e, e. These arms are each formed with light open side bars
sufficiently strong for the desired work; at the back ends the arms d, d, are
reerived into the ychef, in which they are secured by pointed screws 1, 1, on
which screws said bars can swing or move vertically, and the yoke itself can
be swung horizontally on the screws 2, and by this means a universal joint is
obhe arms e, e, are similarly fitted in the yoke 9. The arms d. d,
and are connected together so as to be free to move, but retained parallel
to each other by the head h that is of a size to pass in between the bars, and
above and below the corners of this frame are blocks 3, 3, passing up between
the side bars of the respective arms; these blocks are attached upon a vertical
gudgeon, or by a screw to the said head h, and each of the arms is connected

page_text: to the respective blocks by the pointed screws 4, 4. By this arrangement the
headh can be raised or lowered or moved to the right or left, and always
occupies a position parallel to the bed b. The head and arms are to be
counterpoised by a spring or weight acting upon a cord, so that the parts can
be easily moved to direct the tracer and cutter in carving. The cutter i is!
fitted to revolve in a frame or boxes that are supported by pointed screws
between the ends of the arms d, and a belt k connects from the pulley p of
this cutter to the pulley that is centrally over the axis of the yoke f, so that
the belt k will remain under the proper strain in any position of the head h
and arms d, e. The tracer o is similarly sustained between the ends of the
arms e, e.
It will now be understood that a pattern and piece of material to be carved
are to be attached upon the bed b, and that the carving is effected by the
rotary cutter as it is moved, the tracer enabling the workman to follow the
pattern, so that the carving corresponds therewith, the head being raised or
depressed with great facility, or moved to the right or left to follow the un-
dulations of the pattern, and the bed 6 can be moved along at right angles to
said head h, so that the carving will also be effected lengthwise of the article.
In this manner picture frames, medallions, gun stocks, or other articles in
relief or countersunk can be carved or bored, and when it is desired to carve
a bust or any circular figure the pattern and block of material are to be
mounted on pairs of centres the same distance apart as the cutter and tracer,
and revolved in unison by a worm pinion, the endwise movement being
effected by the movement of the bed 6 as before. In carving a bust, a gun
stock, or any other article that requires carving on both sides, the tern and
the article can be clamped into a frame that is mounted on trunnions at its
sides, so as to allow of being turned over to present first one side and then the
other to the action of the carving or boring tools as directed by the workman,
thus ensuring a perfect correspondence between the pattern and the article on
both of its sides.
The particular manner of forming the joints for the universal arms might
be varied, my Invention still remaining the same; I, however, havo repre-
sented the device that I believe to be the most durable and having the least
triction. Que pattern and tracer may be used with two of
carving or boring tools to produce more than one article at a time.
ary
tool
is to be of a shape adapted to the work to be performed, and may be of steel
or diamond.
What I claim and desire to secure by Letters Patent is, carving or boring
correspond with a pattern by means of a rotary tool and a tracer mounted

page_text: substantially as specified at the ends of universally moving parallel arms, as
set forth.
In witness whereof, I, the said William Walker Marston, have here-
unto set my hand and seal, this Seventeenth day of April, A.D. One
thousand eight hundred and sixty-seven.
Witnesses,
W. W. MARSTON. (L.S.)
CHAS. H. SMITH, 121, Nassau St., New York,
GEO. D. WALKER,
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