IMPROVEMENTS IN SAWS OR OTHER SIMILAR INSTRUMENTS FOR CUTTING AND DRESSING STONE
Year: 1869

page_text: LETTERS PATENT to Edward Thomas Hughes, of the Firm of Hughes
and Son, Patent Agents, 123, Chancery Lane, London, for the
Invention of "IMPROVEMENTS IN SAWS OR OTHER SIMILAR INSTRUMENTS
FOR CUTTING AND DRESSING STONE."-A communication from abroad
by Isaac Edwin Newton, of Waterbury, in the County of New
Haven, United States of America.
Sealed the 3rd December 1869, and dated the 11th June 1869.
PROVISIONAL SPECIFICATION left by the said Edward Thomas Hughes
at the Office of the Commissioners of Patents, with his Petition,
on the 11th June 1869.
I, EDWARD THOMAS HUGHES, of the Firm of Hughes and Son, Patent
Agents, 123, Chancery Lane, London, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN SAWS OR OTHER SIMILAR INSTRU-
MENTS FOR CUTTING AND DRESSING STONE," a communication to me from

page_text: abroad by Isaac Edwin Newton, of Waterbury, in the County of New
Haven, United States of America, to be as follows:-
This Invention relates to improvements in saws or instruments for
cutting or dressing stone in which the cutting points are formed from
diamonds or other precious stones.
The object of this Invention is to secure the diamond or stone so that
it cannot move from its position when in use (a serious disadvantage
in saws or instruments as at present constructed), and the Invention
consists in enclosing the diamond or other stone between two blocks
of metal, a recess being formed for its reception, so that the point of
the diamond or other stone will project therefrom, and the said two
blocks are set into the saw or other instrument so that they cannot be
moved laterally therefrom, and the blocks are keyed therein to prevent
them from being drawn out longitudinally.
I will now proceed to describe the Invention as illustrated in the
accompanying Sheet of Drawings, in which Fig. 1 is a side view of a
portion of a saw; Fig. 2 an edge view, and Fig. 3 a central section.
A represents a saw or other similar instrument into which it is desired
to set the diamond; B, B, are two blocks of steel or other suitable
metal of like construction. At the outer and meeting edge of the two
blocks a recess a is formed to recieve the diamond d. The diamond
may be fitted to the recess so that the blocks when meeting perfectly
will securely hold it, yet I prefer to imbed the diamond in some soft
material as denoted in Fig. 3. The opposite edges of the blocks are
grooved, as seen at f, and the edges of the recess formed to receive the
saw, as seen in Fig. 2, or if preferred the grooves may be in the saw
or other instrument, the edges of the blocks projecting thereinto. The
blocks should be made to perfectly fit the recess formed for them in
the saw, this prevents any lateral movement of the blocks. To prevent
the blocks from being withdrawn a key seat is formed both in the
blocks and saw to receive the keys L, these combined with the lateral
security. positively prevent the accidental removal of the blocks, con-
sequently the diamond cannot be forced from its setting.
By this
construction the blocks can be hardened to any extent, and therefore
will not in use wear away and so loosen the diamond. The diamond

page_text: may be set at any desired position upon the edge or sides of the saw,
so that by the combined action of all the diamonds a curve can be cut
or a surface dressed..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Thomas Hughes in the Great Seal Patent
Office on the 10th December 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
THOMAS HUGHES, of the Firm of Hughes and Son, Patent Agents, 123,
Chancery Lane, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of June, 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 successors,
give and grant unto me, the said Edward Thomas Hughes, Her special
licence that I, the said Edward Thomas Hughes, my executors, adminis-
trators, and assigns, or such others as I, the said Edward Thomas
Hughes, 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 SAWS OR OTHER SIMILAR INSTRUMENTS POR CUTTING AND.
DRESSING STONE," a communication to. me from abroad by Isaac Edwin
Newton, of Waterbury, in the County of New Haven, United States of
America, upon the condition (amongst others) that I, the said Edward
Thomas Hughes, 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 Edward Thomas Hughes, 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 in and

page_text: by the following statement and accompanying sheet of Drawings (nat
is to say)-
This Invention relates to improvements in' saws or instruments for
cutting or dressing stone in which the cutting points are formed of
diamonds or other similar precious stones..
The object of the Invention is to secure the diamond or stone so that
it cannot move from its position when in use (a serious disadvantage.
in saws or other instruments as at present constructed), and the Inven-.
tion consists in enclosing the diamond or other stone between two blocks
of metal, a recess being formed for its reception, so that the point of the
diamond or other stone will project therefrom, and the said blocks are set
into the saw or other instrument so that they cannot be moved laterally.
therefrom, and the blocks are keyed therein to prevent them from being
drawn out longitudinally.
To enable others skilled in the art to make and use this Invention,
I will proceed to describe the same as illustrated in the accompanying
Drawings, in which Fig. 1 is a side view of a portion of a saw; Fig. 2
an edge view, and Fig. 3. a central section.
A represents a saw or other similar instrument into which it is desired
to set the diamond; B, B, are two blocks of steel or other suitable
metal of like construction. At the outer and meeting edge of the two
blocks a recess a is formed to receive the diamond d. The diamond
may be fitted to the recess so that the blocks when meeting perfectly
will securely hold it, yet I prefer to imbed the diamond in some soft
material as denoted in Fig. 3. The opposite edges of the blocks are
grooved, as seen at f, and the edges of the recess are formed to receive
the blocks, as seen in Fig. 2, or if preferred the grooves may be in the
saw or other instrument, the edges of the blocks projecting thereinto.
The blocks should be made to perfectly fit the recess formed for them
in the saw, as this prevents any lateral movement of the blocks. To
prevent the blocks from being withdrawn a key seat is formed both
in the blocks and saw to receive the keys L, these combined with the
lateral security positively prevent the accidental removal of the blocks,
consequently the diamond cannot be forced from its setting. By this
construction the blocks may be hardened to any extent, and therefore
will not in use wear away and so loosen the diamond. It will be readily
understood that the diamond may be set in any desired position upon

page_text: the edge or sides of the saw, so that by the combined action of all the
diamonds a curve can be cut or a surface dressed.
Having thus fully described the Invention as communicated to me
from abroad what I claim as new and useful and desire to secure by
Letters Patent is, the herein-described method of setting diamonds in
stone cutting or dressing instruments, consisting of the two blocks B, B,
constructed and arranged substantially as set forth.
In witness whereof, I, the said Edward Thomas Hughes, have
hereunto set my hand and seal, this Tenth day of December, in
the year of our Lord 1869.
E. T. HUGHES. (L.S.)