IMPROVEMENTS IN MACHINERY OR APPARATUS FOR WORKING STONE, OR CUTTING AND WORKING MOULDINGS THEREON
Year: 1866

page_text: LETTERS PATENT to Thomas Gall, Manager to Jonathan Charnock, of
Halifax, in the County of York, Builder and Contractor, for the
Invention of "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR WORKING
STONE, OR CUTTING AND WORKING MOULDINGS THEREON."
Sealed the 26th February 1867, and dated the 30th August 1866.
PROVISIONAL SPECIFICATION left by the said Thomas Gall at the Office
of the Commissioners of Patents, with his Petition, on the 30th August
1866.
I, THOMAS GALL, Manager to Jonathan Charnock, of Halifax, in the
County of York, Builder and Contractor, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR WORKING
STONE, OR CUTTING AND WORKING MOULDINGS THEREON," to be as follows:-
This Invention consists in the use or employment of a series of chisels or
cutting tools formed suitably to be fixed in a tool head or frame in such a
manner that their cutting edges or points can be set to form the moulding
required to be worked on the stone. The tool head is capable of moving on
slide frames placed either vertically or in any other convenient position or
direction. A steam hammer is employed to strike the tool head for actuating
the chisels or for producing a cutting effect on the stone placed under operation,

page_text: and the tool head is caused to rebound from the stone by the action of springs;
or instead of the tool head being struck it may be fixed to the hammer if
required. The stone to be worked is fixed upon a table or carriage, to which
either an intermittent or a continuous slide motion may be given by rack
and pinion or screw and nut in both a longitudinal and a lateral direction,
and the said table or carriage is mounted on a spindle which is capable of a
circular or a rotary motion being given to it by worm and wheel, or wheel and
pinion; also provision is made to place the surface of the table or carriage at
an inclination to the action of the hammer if required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Gall in. the Great Seal. Patent Office on the 28th
February 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
GALL, Manager to Jonathan Charnock, of Halifax, in the County of York,
Builder and Contractor, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of August, in the year of our
Lord One thousand 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 Thomas Gall, Her special licence that I, the said Thomas Gall, my
executors, administrators, and assigns, or such others as I, the said
Thomas Gall, 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 OR APPARATUS FOR WORKING STONE, OR CUTTING AND WORKING
MOULDINGS THEREON," upon the condition (amongst others) that I, the said
Thomas Gall, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, 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 Thomas Gall, do hereby declare the
nature of my said Invention, and in what manner the same is to bę

page_text: performed, to be particularly described and ascertained in and by the following
statement and accompanying Sheet of Drawings (that is to say):
-
This Invention consists in the use or employment of a series of chisels or
cutting tools formed suitably to be fixed in a tool head or frame in such
manner that their cutting edges or points can be set to form the moulding
required to be worked on the stone. The tool head is capable of moving on
slide frames placed either vertically or in any other convenient position or
direction. A steam hammer is employed to strike the tool head for actuating
the chisels or for producing a cutting effect on the stone placed under opera-
tion, and the tool head is caused to rebound from the stone by the action of
springs; or instead of the tool head being struck it may be fixed to the
hammer if required. The stone to be worked is fixed upon a table or carriage
to which either an intermittent or a continuous slide motion may be given by
rack and pinion or screw and nut, in both a longitudinal and a latteral direc-
tion; and the said table or carriage is mounted on a spindle which is capable
of a circular or rotary motion being given to it by worm and wheel, or wheel
and pinion; also provision is made to place the surface of the table or carriage
at an inclination to the action of the hammer if required.
.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation of a machine constructed according to this Inven-
tion; and Fig. 2 is a cross section of a portion of the same.
A is a pillar supporting a slide bed or gantry B, which is capable of being
turned thereon by means of the hand wheel C and pinion C¹ carried on the
flange B¹ of the said gantry, and gearing in a circular rack under the edge
of a circular flange A¹ fixed on the said pillar. On this gantry is mounted
a slide table D which is capable of being moved in either direction by hand
wheel E operating a screw F working in a nut attached to the under side of
the table, or this screw may be operated by a ratchet wheel and pawl, or other
mechanical means. Upon the table is a slidable box or carriage G, which
is capable of being moved latterally or across the table by means of the hand
wheel and screw F, which screws may also be operated by power. A block
of stone I is shewn as fixed in this box by set screws J, and a series of chissels
or cutting tools K³, K, and K³, are fixed in a tool head L which is hinged
upon a pin fixed in a tool box M attached to and resting upon a frame N
which is fixed to another frame P attached to and capable of adjustment on
two curved plates R and R', which are fixed to and supported on brackets S
bolted to the pillar or frame T, which carries a steam hammer U employed
for striking the tool head. This hammer is constructed with a circular

page_text: flange T, by which it is fixed to another circular flange T on the pillar T, in
which are slot holes so formed that the flange of, the hammer can be turned
or twisted on the flange of the pillar so as to set the hammer to any desirable
angle. A strap V is passed around the circular flanges T and T of the
hammer, and connected to the frame P to give additional support to the tool
box, and other straps or rods V₁ and V are also attached to this frame P,
and may be fixed to any convenient beam or other part of a building for the
purpose of support; a spring W is attached to the tool head and to the tool
box to bring the tool back to its proper position after being struck with the
hammer, or instead of a spring for the purpose a weighted lever X may be
employed for the same purpose.
It will be obvious that various forms of tools or cutters will be required
according to the different kinds of mouldings or forms to which stone is
required to be cut, and for which purpose the tool head will also requiré to
be adapted in size and form; I therefore employ a number of tool. boxes with
the proper tool heads therein ready to be used when required.
In witness whereof, I, the said Thomas Gall, have hereunto set my hand
and seal, this Twenty-seventh day of February, One thousand eight
hundred and sixty-seven.
Signed, sealed, and delivered by the
within-named Thomas Gall, in
the presence of
WM. TASKER,
Patent Agent,
Halifax.
THOMAS GALL.. (L.S.)