IM- PROVEMENTS IN THE MACHINERY FOR CUTTING AND DRESSING STONES AND OTHER HARD SUBSTANCES
Year: 1865

page_text: LETTERS PATENT to Maurice Vogl, of Sambrook Court, Basinghall
Street, in the City of London. Merchant, for the Invention of "IM-
PROVEMENTS IN THE MACHINERY FOR CUTTING AND DRESSING STONES AND
OTHER HARD SUBSTANCES."-A communication from abroad by Gustavus
Cuppers, of New. York, in the United States of America...
Sealed the 13th October 1865, and dated the 19th April 1865.
PROVISIONAL SPECIFICATION left by the said Maurice Vogl at the
Office of the Commissioners of Patents, with his Petition, on the
19th April 1865.
I, MAURICE VOGL, of Sambrook Court, Basinghall Street, in the City of
London, Merchant, do hereby declare the nature of the said Invention for
"IMPROVEMENTS. IN MACHINERY FOR CUTTING AND DRESSING STONES AND OTHER
HARD SUBSTANCES," (communicated to me from abroad by Gustavus Cuppers,
of New York, in the United States of America,) to be as follows:-
A sliding platform supports the stone or substance to be cut and feeds it
laterally. A spring chisel, or chisel combined with a spring, is held in a

page_text: frame mounted in an adjustable feeding frame, raised and lowered as required.
The chisel, which may be fed over the stone longitudinally, transversely, or in
circles or curves, is worked by a hammer, which has a toe, against which a
lifter strikes and thereby raises the hammer, which in its descent strikes and
depresses the chisel, which is raised again for the next stroke by its spring.
The toe may be lengthened and shortened. The hammer is provided with a
spring, acted on by a screw, to regulate the stroke of the hammer, which is
caused to strike by its own weight and the recoil of the spring. The sliding
platform may be moved by a screw, which, as also the lifter, may be worked
by a crank or belt pulleys; the feed frame may be raised and lowered by
screws, or by rack and pinion held by stop wheels and triggers. The chisel
frame may be moved longitudinally by gearing and rack, The running gear
may be constructed to increase or decrease the number of strokes within a
given time or distance, to regulate fineness, coarseness, or- kind of cut. The
feed may be regulated by moving the lifter transversely, and putting one or
other of two pinions in gear with their respective pulleys. The chisel frame
can be moved to any desired inclination. This may be done by pivoting it in
the adjustable frame, or by pivoting another chisel frame in the sliding frame.
Instead of using a sliding platform to support the stone, the platform may be
stationary, and the chisel frame made to travel transversely as well as lon-
gitudinally. An extra travelling. platform or carriage may be used to carry
stones to the supporting platform, which may be also provided with a turn-
table or revolving platform and feeding rack, and a pinion or cog wheel for
circular cuts and curving. Several chisels and hammers may be combined, in
one machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent; filed
by the said Maurice Vogl in the Great Seal Patent Office on the
19th October 1865.
TO ALL TO WHOM THESE PRESENTS, SHALL COME, I,, MAURICE
VOGL, of Sambrook Court, Basinghall Street, in the City of London, 3
Merchant, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by: Her Letters
Patent; bearing date, the Nineteenth day of April, in the year, of, our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of Her

page_text: reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Maurice Vogl, Her special licence that I, the said Maurice Vogl, my
executors, administrators, and assigns, or such others as I, the said Maurice
Vogl, 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
THE MACHINES FOR CUTTING AND DRESSING STONES AND OTHER HARD SUBSTANCES,"
upon the condition (amongst others) that I, the said Maurice Vogl, 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 Maurice Vogl, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawings hereunto annexed,
and the letters and figures marked thereon, in which Fig. 1 represents a per-
spective view of a machine constructed according to said Invention; Fig. 2
is a longitudinal vertical section of the same; Fig. 3 is a detached view of a
modification thereof.
A in the same Drawings represents a bed plate, which supports the entire
machine, and which is provided with suitable tracks or guides for the sliding
plate or carriage B, which is intended to support the stone or other material
to be cut, and which may be provided with wheels of any convenient size, so
that the stone or other material resting thereon could be easily moved under
the machine, and on being taken from the same could be wheeled without
trouble or loss of time to its place of destination. Motion is imparted to this
carriage in a lateral direction by a feed screw C, which is operated by pullies
D, or by a crank or other suitable mechanism. From the platform 'or bed
plate A rise four (more or less) standards F, which support a frame E. This
frame can be raised or lowered means of set screws G, or by racks or
pinions held by suitable ratchet wheels and pawls, or by any other suitable
mechanism, and this frame E supports a chisel frame H, on which the
operating parts of the machine are mounted. These operating parts consist

page_text: in a chisel I, which is secured in and to the chisel shaft K. This latter is
held in the frame H by means of the spiral spring a, which rests on the
frame H, and bears with its upper end upon the flange 6 of the chisel shaft,
which shaft is operated on by the hammer L. This hammer may be made of
wood or metal; but when made of wood or other soft material its lower end
should be armed with a solid metal head C; said hammer is guided in its
motions by the guide slips or slides d, which fit into corresponding grooves in
the frame H, and it is provided with a toe M, against which a lifter N strikes
and operates. This lifter N may be arranged in various different ways, and I do
not wish to confine myself in this respect to the precise construction shewn in
the Drawing, but reserve the right to change the same as I may see fit. By
the action of said lifter against the toe M the hammer L is raised, and in
lescending the hammer strikes the chisel shaft K in which the chisel I is
inserted, and said chisel is caused to operate on the stone or other material
secured on the carriage B. The tension of the spring a, however, is such, that
after each blow of the hammer L, it causes by its recoil the chisel I to
rise a short distance above the face of the stone ready for the next blow,
thereby the operation of cutting stone by hand is imitated; but such operation
by this machine is performed in a much more perfect and regular manner
than it can be done by hand. The toe M can be fastened permanently to the
hammer, or it may be made adjustable, or so that it can be raised or lowered,
lengthened or shortened according to the stroke desired. From the upper
end of the hammer L extends a small rod f through a screw Z, which is
secured in the upper part of the frame H, and which latter is bored out to
receive said rod. The inner end of said screw Z bears on a spiral spring y,
which is placed on the rod f, and causes the hammer L to strike with the
desired force, and the short and sharp blows executed by the hammer, when
operated by hand, are thereby imitated. The lifter N may be operated either
by means of a crank O or by power through a belt and pullies P. The frame
H, which supports the working part of the machine, is made to slide lon-
gitudinally within or upon the frame E, so as to feed the chisel lengthwise
over the stone; or, if desired, said chisel frame may be so arranged that a
revolving as well as a sliding motion can be imparted to it, and it is also
constructed in such a manner that it can be adjusted to any desired incli-
nation. By these means the chisel can be brought to bear upon the stone in
the proper direction to produce the best possible effect. The feed of the chisel
frame His rendered automatic by the employment of suitable gearing
h, i, k, l, m, n, shewn in Fig. 1, the wheel n being made to gear in a rack Q

page_text: on the frame E, and by changing the proportion of those wheels, the feed can
be varied so as to adapt it to coarse or fine cutting. The lifter N is so
arranged that it can be thrown out of gear either by moving it transversely on
its shaft or otherwise. The object of making the chisel frame, and with it
the chisel, adjustable to any desired inclination, is effected by pivoting said
frame to the frame E, or by means of an arrangement such as is shewn in
Fig. 3, where a pivoted chisel frame R is used within the sliding frame H,
said chisel frame being made to turn upon the pivot u, and being secured
in its position by
a pin or set screw v. By this arrangement, and by
giving to the chisel frame or to the stone a revolving motion, the machine is
made adaptable to rough hewing, as well as finishing work, simply by
adjusting the inclination of the chisel, and the direction in which it strikes the
edge of the stone or other article to be cut or dressed, and by changing the
form of the chisel according to the work to be performed. For cutting very
large stones on a feeding plate B, it will be found better to use a frame:
which is susceptible of being used longitudinally as well as transversely, so.
that the stone might remain stationary, as it would require considerable power
to move a very large stone on the feeding plate B, Fig. 1. This may be
eflected by using a frame represented in Fig. 3, in which E represents the,
ways or guides on which the frame H is fed longitudinally, and S represents
the ways on which the frames I and R are fed transversely. These frames
are placed above the stone in the desired position, and the cutting of each
face can be performed without moving the stone. Instead of the recoil
spring a above the chisel I, an india-rubber spring a' might be substituted as
shewn in Fig. 3. One end of this spring is secured to the socket ' of tho
chisel, and the other end to the chisel frame H, the spring causing the
chisel to rise after each blow of the hammer. For some purposes the bed
plate A and the platform B could be made even with the ground or floor, and,
an extra platform of any desired size could be provided. This extra platform
resting upon rollers and moving with them upon suitable rails, would serve
to receive large and heavy stones, and would with them be rolled on to and
upon the platform B. In this case the standards F, upon which the adjust-
able frame E would rest, could be fastened into the ground. or upon the floor
within any desirable distance from each other. For some purposes the
platform B could be provided with a turntable or revolving platform, and
feed rack, similar to the rack Q, Fig. 1, and with a suitable feeding gear to
cut in circular or curved lines, and the chisel frame may be arranged on a
similar turntable as previously stated. The operation of the machine would

page_text: be facilitated, and its effect increased, by arranging several chisels, and one or
more corresponding hammers in one and the same machine, and a machine of
this or a similar construction may be used for cutting or dressing other hard
substances besides stones, such, for instance, as files.
After thus describing the nature of the above-named Invention, and the
mode and manner of making and using it, what I claim as my Invention and
desire to secure by Letters Patent is,-
1. The general arrangement and construction of a machine for cutting
stones and other hard substances substantially as herein shewn and described.
2. The combination of a chisel frame H with a feeding frame E, so as to
allow of feeding the chisel over the stone or other hard substance in different
directions, viz., longitudinally, transversely, or in curves, substantially as and
for the purposes set forth.
3. Arranging a chisel frame in a machine for cutting or dressing stones
and other hard substances, so as to give to such frame at option an upright
or an inclined position, substantially as described and for the purposes set
forth.
4. Giving to the feeding frame E or to the chisel frame II a revolving
as well as a longitudinal motion substantially as and for the purposes set
forth.
5. Combining with the chisel frame H a recoil chisel I substantially as
and for the purposes described.
6. The arrangement of the chisel shaft K and hammer L in combination
with the chisel frame H, constructed and operating substantially as and for
the purposes described.
7. The adjusting screw Z in combination with the spring 9 or its equivalent,
and with the hammer L, chisel I, and chisel frame H, constructed and
operating substantially as and for the purposes set forth.
8. The combination of the bed plate A, platform B, feeding frame E, chisel
frame H, chisel shaft K, and chisel I, when constructed and operating sub-
stantially as and for the purposes set forth.
9. The application of a series of cog wheels h, i, k, l, m, n, or their
equivalent, in combination with the chisel frame I and feeding frame E,
substantially as described for the purpose of regulating the number of strokes
according to the work to be executed.
10. The arrangement of set screws G, or their equivalent, in combination
with the feeding frame E substantially as and for the purpose specified.
11. The arrangement of a stationary or moveable and adjustable toe M,

page_text: in combination with the chisel frame H and hammer L, constructed and
operating as and for the purposes described.
12. Placing the platform B on wheels or rollers substantially as and for
the purposes set forth.
In witness whereof, I the said Maurice Vogl, have hereunto set my
hand and affixed my seal, this Fourteenth day of October, One
thousand eight hundred and sixty-five.
Witnesses,
A. BRIEGER.
D. MAZEGGEE.
MAURICE VOGL. (L.S.)