IMPROVEMENTS IN MACHINERY FOR DRESSING, FACING, CUTTING, OR SHAPING STONE, MARBLE, GRANITE, OR OTHER MINERALS
Year: 1877

page_text: LETTERS PATENT to James Coulter, of Dewsbury, in the County of York,
Engineer, and Herbert Harpin, of Brockholes, near Huddersfield, in the same
County, Quarry Owner, for the Invention of "IMPROVEMENTS IN MACHINERY
FOR DRESSING, FACING, CUTTING, OR SHAPING STONE, MARBLE, GRANITE, OR
OTHER MINERALS"
PROVISIONAL SPECIFICATION left by the said James Coulter and Herbert
Harpin at the Office of the Commissioners of Patents on the 8th February
1877.
JAMES COULTER, of Dewsbury, in the County of York, Engineer, and HERBERT
HARPIN, of Brockholes, near Huddersfield, in the same County, Quarry Owner.
"IMPROVEMENTS IN MACHINERY FOR DRESSING, FACING, CUTTING, OR SHAPING
STONE, MARBLE, GRANITE, OR OTHER MINERALS."
This Invention has reference to a prior Invention for which Letters Patent were
granted to us, dated April 1st 1872, No. 959, for "Improvements in Machinery for
Dressing, Facing, or Shaping Stones, Marble, Granito, or other Minerals, and for
Cutting Mouldings thereon," and our present improvements consist in the applica-
tion of a rocking or moveable table, by means of which the stone, after being
dressed on one face, may be turned partially round and finally adjusted at any
angle so as to expose another face or portion of the stone to the action of the cutting
tools.
The moveable table is mounted on centres supported in brackets or pedestals
fixed to the ordinary bed of the machine. On the end of one of the centres or axes
is a worm wheel which gears with a worm provided with a hand wheel or lever.
Each axis also carries a disc or plate, one of which may have a series of holes for
the reception of a pin, which may be passed through the plate into a corresponding
hole in the bracket or pedestal, by which the table may be retained in its position.
The other disc may have only one hole, through which passes the end of a bolt, the
head of which slides in a radial slot formed in the pedestal, so that when the table

page_text: has been adjusted the nut of the bolt may be screwed up, and thereby retain the
table firmly in the desired position. By this arrangement three sides of a block of
stone or marble may be dressed or cut without removing the stone from its fixing
upon the table, and the cuttings may be effected at any variety of angle.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said James Coulter and Herbert Harpin in the Great Seal Patent Office on the
8th August 1877.
JAMES COULTER, of Dewsbury, in the County of York, Engineer, and HERBERT
HARPIN, of Brockholes, near Huddersfield, in the same County, Quarry Owner.
"IMPROVEMENTS IN MACHINERY FOR DRESSING, FACING, CUTTING, OR SHAPING
STONE, MARBLE, GRANITE, OR OTHER MINERALS."
This Invention has reference to a prior Invention, for which Letters Patent were
granted to us, dated April 1st, A.D. 1872, No. 959, for "Improvements in Machinery
for Dressing, Facing, or Shaping Stones, Marble, Granite, or other Minerals, and
for Cutting Mouldings thereon," and our present improvements consist in the
application of a rocking or moveable table, by means of which the stone, after being
dressed on one face, may be turned partially round, and firmly adjusted at any
angle so as to expose another face or portion of the stone to the action of the
cutting tools.
The moveable table is mounted on centres supported in brackets or pedestals
fixed to the ordinary bed of the machine. On the end of one of the centres or axes
is a worm wheel which gears with a worm provided with a hand wheel or lever.
Each axis also carries a disc or plate, one of which may have a series of holes for
the reception of a pin, which may be passed through the plate into a corresponding
hole in the bracket or pedestal, by which the table may be retained in its position.
The other disc may have only one hole, through which passes the end of a bolt, the
head of which slides in a radial slot formed in the pedestal, so that when the table
has been adjusted the nut of the bolt may be screwed up, and thereby retain the
table firmly in the desired position. By this arrangement three sides of a block of
stone or marble may be dressed or cut without removing the stone from its fixings
upon the table, and the cuttings may be effected at any variety of angle.
In order that our Invention may be more fully understood we herein give reference
to the accompanying Sheet of Drawings illustrative thereof.
Fig. is side elevation; Fig. 2, a plan view; and Fig. 3, part end elevation.
A is the moveable table, which is mounted on centres B, supported in brackets
or pedestals C, fixed to the ordinary bed of the machine. The table is turned upon
its axis by means of a worm wheel D, which is fixed on the gudgeon or centre B
this wheel gears with a worm E, and may be turned by applying either a hand
wheel or swaife to the end of the spindle F: Each of the axes B carries a disc or
plate H, one of which has a series of holes a for the reception of a pin J which
passes through a hole in the pedestal and retains the table in position. The other
disc has only one hole, through which passes the end of a bolt K, the head of which
slides in a radial siot L formed in the pedestal. The bolt K may be used along
with the pin J for retaining the table in position, or it may be used separately
when it is desired to set the table at an angle, for which no hole has been provided.
Fig. 4 shews the table with the stone thereon in another position, exposing another
side of the stone to the action of the cutting tools. The stone is fixed to the table,
and held firmly thereon by means of the moveable jaws M and M³, which are opened
and closed by means of the screw N. Slots P. are provided in the bed so as to
allow the jaws to take in different sizes of stone.
Having thus described the nature of our Invention, we would have it understood
that we do not confine ourselves to the precise details of construction or arrange-

page_text: ment, as the same may be varied, but what we claim as our Invention and
consider to be new is the combination and arrangement of the moveable table with
the method of locking the same at any required angle, substantially as herein shewn
and described.
In witness whereof, I, the said James Coulter, for and on behalf of myself and
the said Herbert Harpin, have hereunto set my hand and seal, this
Seventh day of August, in the year of our Lord One thousand eight
hundred and seventy-seven.
Witness,
J. W. TASKER,
Patent Agent,
Halifax.
JAMES COULTER. (LS)