Improved Tools for Stone Moulding Machinės.
Year: 1894

page_text: Date of 'Application, 22nd Dec, 1894
Complete Specification Left, 25th July, 1895-Accepted, 31st Aug. 1895
Improved Tools for Stone Moulding Machinės.
1, JOHN PICкHOVER 3 Midland Street Nelson Lancashire England Stone
Mason do hereby declare the naturo of this invention to be as follows:-
The object of my invention is to construct an effective form of tool for molding
stone when the cutting operation is effected by sand and water, or other abraiding
material, and this object I attain in the manner hereinafter set forth, reference
being bad to the accompanying drawings in which
Fig. 1. is a side view, partly.in section, of a rotary molding tool constructed´in
accordance with my invention.
Fig. 2. is a transverse section of a part of said tool.
Fig. 3. 18 a side view of a part of a reciprocating molding tool constructed in
accordance with my invention.
Fig. 4. is a transverse section of said tool, and
Fig. 5. 18 an end view of the same.
The tool shewn in Fig. 1. comprises a shaft A. to which are secured by keys, or
in any other suitable manner, opposite diska B, B', between which are clamped a
series of sets of steel or other metal plates, or blades a with intervening packings b,
the disks being secured together, preferably, between each set of blades by means
of transverse holts d and nuts d', or, by means of bolts and keys, or equivalent
fastenings.
The blades of each set are adjusted so that then outer ends conform to the
shape of the molding which is to be produced, so that when the outer ends of the
blades are brought into contact with the surface of the stone, they will cause
the sand, or water, or other branding material, to act upon the stone and reduce
the same to a contour corresponding with that of the outer ends of the blades; 'the
fact that there are spaces between the blades of oach set, as well as between the
sets of blades using the free access of the abraiding material to every part of
the surface which is being acted upon by the blades; so that the rapid aud effectual
reduction of said surface to the desired shape will be effected.
In applying my mvention to a reciprocating tool the same arrangement of spaced
sets of blades, and spaced blades in each set is adhered to, the blades being clamped
together hetween front and rear bats D, D', and the latter being secured at the
ends to the upright bars, or parts F of the frame of the tool, so that the latter
can be reciprocated in the same manner as a stoue cutting saw, with a lineal
motion.
The disk B is of large diameter than the disk B and the clamping bai D¹ 18.
of greater depth than the bar D so as to provide for the confining of the blades a
alose to their acting onds, when the ends of said 'blades are disposed as shewn in
Fig. 3. and Fig 4.
It will be evident that circular stone-saws of diffcient diameters with the teeth
thinuer than the body of the saw, may be used in place of the blades in the rotary
molding tool; also, that longitudinal saws with teeth thinner than the blade, or
body of the saws, may be used in the reciprocating molding tool m place of the
Bets of plates, without departing from my invention.

page_text: It 18 also evident that thick or thin blades or saws may be used to produce
various qualities of work; for, thick saws will produce coarse work and thin saws
will produce fine work.
Dated Twentieth day of December 1894.
JOHN
PICKHOVER,
3 Midland Street, Nelson, Lancashire, England.
Improved Tools for Stone Moulding Machines.
JOHN PIOкHOVER 3 Midland Street Nelson Lancashire Retired Stone Mason
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to construct an effective form of tool for moulding
stone when the cutting operation is effected by the aid of sand and water or other
abraiding material, and this object I attain in the manuer hereinafter set forth,
reference being had to those drawings left with the Provisional Specification, in
which
Fig. 1. is a side view, partly in section, of a rotary moulding tool constructed in
accordance with my invention.
Fig. 2. is a transverse section of said tool.
Fig. 3. 15 a side view of a part of a reciprocating moulding tool constructed in
accordance with my invention
Fig 4. is a transverse section of said tool, and
Fig. 5. is an end view of the same.
The tool shewn in Fig. 1. comprises a shaft A to which are secured by keys, or
in any suitable manner, opposite discs B, B', between which are clamped a series
of sets of steel or other metal plates or blades a with intervening packings b, the
discs being secured together preferably between each act of blades by means of
transverse bolts d and nuts d', or by means of bolts and keys or equivalent
fastenings.
The blades of each set are adjusted so that their outer ends conform to the
shape of the moulding which is to be produced so that when the outer ends of the
blades are brought into contact with the surface of the stone they will cause
the sand and water or other abanding material to act upon the stone and reduce
the same to a contour corresponding with that of the outer ends of the blades; the
fact that there ate spaces between each set as well as between the sets of blades
insures the free access of the abraiding material to every part of the surface to be
acted upon by the blades so that the rapid and effective reduction of said surface
to the desired shape will be effected.
In applying my invention to a reciprocating tool the same arrangement of spaced
sets of blades and spaced blades in each set 18 adhered to, the blades being clamped
between the front and rear bars D, DI, and the latter being secured at the ends
to the upright bars or posts F of the frame of the tool so that the latter can be
reciprocated in the same manner as a stone cutting saw having a lineal motion.
The disc B' 18 of large diameter than the disc B and the clamping bar D' 18
of a greater depth than the bar D so as to provide for the confining of the blades a
close to their acting ends when the ends of said blades are disposed as shown in
Figs.
and 4. but when the blades are differently disposed, the bars or plates may
be changed accordingly.
It will be evident that circular saws of different diameters may be used in place
of the blades in a rotary moulding tool. Also that longitudinal saws may be used
an a reciprocating moulding tool. The cucular saws and the longitudinal saws

page_text: to have teeth thinner than the blade, or body, of the saw, so that when the saws
are clamped together there will be spaces between the sides of the teeth and the
ends of the teeth.
Thick or thin saws may be used to produce the quality of work required
Thick saws will produce coarse work and thin saws will produce fine work.
In an organized machine the tool may be mounted so as to rotate in suitable
bearings and may be combined with suitable devices for feeding the water and
abraiding material thereto, and the stone may he fed to the tool either on a
horizontal or on an inclined plane.
When the tool reciprocates the stone is stationary, and the tool acts in the same
manner as a gang saw with lineal motion.
Having thus described my invention, I claim and desire to secure by Letters
Patent-
The combination in a stone moulding tool, of opposite bars or plates, a series
of sets of thin metal blades arranged between said bars or plates so as to provide
spaces between the successive sets, pucking strips between the adjoining blades of
each set torming spaces between said adjoining blades, whereby free access of
abiaiding material to every part of the surface is provided, and means for rigidly
clamping the bars or plates together with the blades between them, whereby the
latter can have no independent movement, substantially as specified.
Dated this Twenty-fourth day of July One thousand eight hundred and
ninety-four.
July 24th 1895.
JOHN PICKHOVER,
3 Midland Street, Nelson, Lancashire.
JOHN PICKHOVER,
3 Midland Street, Nelson, Lancashire.