IMPROVEMENTS IN MACHINES FOR CUTTING INTO SLATE IN QUARRIES, APPLICABLE ALSO TO MACHINES FOR CUTTING IN COAL PITS, MINES, AND STONE QUARRIES
Year: 1869

page_text: LETTERS PATENT to William Edward Gedge, of the Firm of John
Gedgo and Son, of No. 11, Wellington Street, Strand, in the County
of Middlesex, Patent Agent, for the Invention of "IMPROVEMENTS IN
MACHINES FOR CUTTING INTO SLATE IN QUARRIES, APPLICABLE ALSO TO
MACHINES FOR CUTTING IN COAL PITS, MINES, AND STONE QUARRIES."A
communication from abroad by Joseph Debry, of 89, Faubourg
St. Martin, Paris, in the Empire of France.
Sealed the 16th July 1869, and dated the 22nd January 1869.
PROVISIONAL SPECIFICATION left by the said William Edward Gedge
at the Office of the Commissioners of Patents, with his Petition, on
the 22nd January 1869.
I, WILLIAM EDWARD GEDGE, of the Firm of John Gedge and Son,
of No. 11, Wellington Street, Strand, in the County of Middlesex,
Patent Agent, do hereby declare the 'nature of the said Invention for
IMPROVEMENTS IN MACHINES FOR CUTTING INTO SLATE IN QUARRIES, APPLICABLE
ALSO TO MACHINES FOR CUTTING IN COAL PITS, MINES, AND STONE QUARRIES,"

page_text: a communication to me from abroad by Joseph Debry, of 39, Faubourg
St. Martin, Paris, in the Empire of France, to be as follows:-
This Invention consists in certain modifications and improvements
of the cutting machines for which I obtained Letters Patent, No. 2177,
dated 27th July 1807.
I will not here dwell upon the mechanical arrangements of the
machines previously patented as aforesaid, they being set forth in the
Specification to such Patent, but confine myself to stating that their
principle was based upon the use of a screw as automotive engine, which
screw gave to the tool holder a forward and at the same time a rotary
movement on itself, thus facilitating the introduction of the gouge into
the block.
I must further observe that in order to make a vertical cut in the
entire height of the gallery or of the block it was necessary after each
incision to raise the toolholder to enable it to effect a new one at the
side, and that this was done by hand labour, and one of the improve-
ments the subject of this Invention consists in causing the machine
to effect this operation automatically with a regularity and a precision
hitherto unattainable.
This movement takes place as follows:-When a rotary motion has a
been given to the tool holder by means of a lever fitted to it, a rod con-
nected to and drawn by this lever comes against another lever which it
causes to pivot, the result of this action, being the uplifting of a driver
resting on the toothed wheel of a windlass to which it gives a rotary
motion. A chain fixed to the end of the tool holder and passing over a
pulley on the framing winds on the above-mentioned windlass or axle-
tree, and thereby causes the tool holder to rise a certain regulated
distance after each stroke of the cutter.
Another of these improvements consists in an arrangements of the
propelling screw permitting the machine to work right or left, which
was not previously the case.
The machine for making horizontal sections undergoes the same
modifications. The machine is placed and may slide horizontally on a
bar of double iron. An endless chain is fixed to each of its ends, and
gearing with a pinion placed on the machine; this pinion receives a
retary motion in the same manner as the windlass of the above.
described machine, but as the chain is firmly secured at each end and

page_text: cannot move it is the pinion which advances, and consequently the
machine itself.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Gedge in the Great Scal Patent
Office on the 20th July 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD GEDGE, of the Firm of John Gedgo and Son, of No: 11,
Wellington Street, Strand, in 'tho' County of Middlesex, Patent Agent,-
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of January, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and, suc-
cessors, give and grant unto me, the said William Edward Gedge, Heri
special licence that I, the said William Edward Gedge, my executors,
administrators, and assigns, or such others as I, the said William Edward.
Gedge, 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. 'mako,
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 MACHINES FOR CUTTING INTO SLATE IN QUARRIES, APPLICABLE
ALSO TO MACHINES FOR CUTTING IN COAL PITS, MINES, AND STONE QUARRIES," &
communication to me from abroad by Joseph Debry, of 89, Faubourg
St. Martin, Paris, in the Empire of France, upon the condition (amongst.
others) that I, the said William Edward Gedge, my executors or
administrators, by an instrument in writing under my, or their, or
one of their hands and scals, 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 Gedge, 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

page_text: in and by the following statement, reference being had to the accom-
panying Sheets of Drawing, and to the figures and letters of reference
marked thereon.
This Invention consists in certain modifications and improvements
of the cutting machines for which I obtained Letters Patent, No. 2177,
dated 27th July 1867.
I will not hero dwell upon the mechanical arrangements of the
machines previously patented as aforesaid, they being set forth in the
Specification to such Patent, but confine myself to stating that their
principle was based upon the use of a screw as automotive engine, which
screw gave to the tool holder a forward and at the same time a rotary
movement on itself, thus facilitating the introduction of the gouge into
the block.
I must further observe that in order to make a vertical cut in the
entire height of the gallery or of the block it was necessary after cach
incision to raise the tool holder to enable it to effect a new one at the
side, and that this was done by hand labour, and one of the improve-
ments the subject of this Invention consists in causing the machine
to effect this operation automatically with a regularity and a precision
hitherto unattainable.
: This movement takes places as follows:-When a rotary motion has
been given to the tool holder by means of a lever fitted to it, a rod con-
nected to and drawn by this lever comes against another lever which it
causes to pivot, the result of this action being the uplifting of a driver
resting on the toothed wheel of a windlass to which it gives a rotary
motion. A chain fixed to the end of the tool holder and passing over a
1 pulley on the framing winds on the above-mentioned windlass or axle-
tree, and thereby causes the tool holder to riso a certain regulated,
distance after cach stroke of the cutter.
Another of these improvements consists in an arrangement of the
propelling screw permitting the machine to work right or left, which.
was not previously the case.
'
The machine for making horizontal sections undergoes the same
modifications. The machine is placed and may slide horizontally on a
bar of double T iron. An enless chain is fixed to each of its ends, and
gears with a pinion placed on the machine; this pinion receives a rotary
motion in the same manner as the windlass of the above-described

page_text: move It 18 ще рицов урон другиеса, или сопосцинку ше
itself.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 (Sheet I.) is an elevation of the machine for making vertical
sections, and Fig. 2 (Sheet I.) shows the automotive engine drawn to a
larger scale, similar letters of reference indicating similar parts in cach
of these Figures respectively.
This machine is set in motion by means of the lever D fixed on the
shaft A by the screw a.
'The rotation of this lover and of the coupling
box D¹ causes the shaft A to exccuto a similar movement and further to
advance and penetrate into the block a distance regulated by tho
inclination of the blades of the screw B. To make a vertical section in
the entire depth of the block the cutter must be made to traverse this
distance and to rise again after each incision; this movement is produced
by the lever E fixed to the coupling box D'. By reason of its confor..
mation it comes on the recoil of the tool holder against the arm F, which
it causes to pivot at f. The opposito end of this lever lifts the lever G
(see Fig. 2). In this movement the click G uplifted with the lever, G
givos a rotary motion to the ratchet H, as well as to the pinion L, both
koyed on the same axlo; this pinion gearing with the endless chain M
draws it backward, being assisted in this action by the friction roller N.
A catch O keeps the ratchet H from moving back.
Fig. 1 of Sheet II. is an elevation of the second machine intended to
mako horizontal sections; it operates on the same principles as that for
cutting vertically, of which it is, in fact, the complemont. It alides
horizontally on the double T bar A, which it traverses in its entiro
length. This movement takes place automatically, very much as in the
other machine (see Fig. 2, Sheet II.). An endless chain is stretched and
held at its ends on the bar A, and a pinion B fixed to the tool holder
gears with it; this pinion receives its movement after each incision by
the arrangement of levers O, O', C", which set in motion the ratchet D
keyed on the pinion shaft. A safety click E acts on another ratclict F,
and does not permit the slightest deviation of the machine to the right
or left if this ratchet is not entirely freed. An arm G is acted upon by
the lever O, which lowers it at the same time as the lover O', and thus
produces the uncogging; it falls again by its own weight.

page_text: I claim the exclusive use of the improvements made in the machines
for which I obtained Letters Patent, No. 2177, A.D. 1867, for the
purpose of obtaining the results above described by the mechanical means
set forth, whatever variation may be made in the arrangement of the
constitutive parts.
In witness whereof, I, the said William Edward Gedge, have
hereunto set my hand and seal, this Twentieth day of July,
in the year of our Lord One thousand eight hundred and sixty-
ninc.