IM- PROVEMENTS IN MEANS OR APPARATUS FOR CUTTING, DRILLING, ENGRAVING
Year: 1875

page_text: LETTERS PATENT to Edwin Lawrence, of No. 6, Lancaster Gate,
Hyde Park, in the County of Middlesex, for the; Invention of "IM-
PROVEMENTS IN MEANS OR APPARATUS FOR CUTTING, DRILLING, ENGRAVING,
Sealed the 19th May 1876, and dated the 18th December 1875.
PROVISIONAL SPECIFICATION left by the said Edwin Lawrence at the
Office of the Commissioners of Patents, with his Petition, on the
18th December 1875.
I, EDWIN LAWRENCE, of No. 6, Lancaster Gate, Hyde Park, in the
County of Middlesex, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN MEANS OR APPARATUS FOR CUTTING, DRILLING, ENGRAVING,
OB CARVING METALS AND OTHER MATERIALS," to be as follows:-
The object of the Invention is to afford increased facility in engraving,
carving, drilling, or otherwise producing ornamental or other designs or
forms in metal, stone, glass, and other materials. For this purpose a point
or other suitable form of cutter, or engraver, or drill is applied to one
end of a hollow rod or spindle, which is capable of revolving in suitable

page_text: bearings within another hollow tube, but projecting beyond such outer
tube at each end, suitable packing at such parts being provided.
.
The end of the rod or spindle opposite to that carrying the cutter is
provided with hollow arms having orifices for the emission of air or
other fluid in a direction adapted to impart thereby rotatory motion to
such spindle and cutter. Air or other fluid is supplied to the hollow rod
or spindle and its arms by a flexible pipe or tube from a reservoir or
other source of supply under pressure.
The supply of air or other fluid to the hollow rotating spindle and
arms may be regulated by a valve or valves when desired.
In use the point, whilst its holding spindle or rod is being caused to
revolve is by the hand or otherwise conducted over the surface to be cut
or formed.
;
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edwin Lawrence in the Great Seal Patent Office :
on the 17th June 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWIN
LAWRENCE, of No. 6, Lancaster Gate, Hyde Park, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of December, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Edwin Lawrence, Her special license
that I, the said Edwin Lawrence, my executors, administrators, and
assigns, or such others as I, the said Edwin Lawrence, 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 MEANS OR APPARATUS FOR CUTTING, DRILLING, ENGRAVING,
OR CARVING METALS AND OTHER MATERIALS," upon the condition (amongst
others) that I, the said Edwin Lawrence, my executors or admini-

page_text: strators, 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 Edwin Lawrence, 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
by the following statement thereof; that is to say :—
The object of the Invention is to afford increased facility in cutting,
engraving, carving, drilling in metal, stone, wood, glass, and other
materials. For this purpose a point, or drill, or saw, or other suitable
form of cutter is applied to one end of a hollow rod or spindle, which is
capable of revolving in suitable bearings within another hollow tube,
but projecting beyond such outer tube at each end, suitable packing at
such parts being provided.
The end of the rod or spindle opposite to that carrying the cutter is
provided with hollow arms having orifices for the emission of air or
other fluid in a direction adapted to impart thereby rotatory motion to
such spindle and cutter. Air or other fluid is supplied to the hollow rod
or spindle and its arms by a flexible pipe or tube from a reservoir or
other source of supply under pressure.
The supply of air or other fluid to the hollow rotating spindle and
arms may be regulated by a valve or valves when desired.
In use the point or other cutter whilst its holding spindle or rod is
being caused to revolve is by the hand or otherwise conducted over or
against the surface to be cut.
But that the Invention may be the better understood I will proceed
to describe, aided by the accompanying Drawings, apparatus such as I
have found to answer for effecting the Invention.
DESCRIPTION OF THE DRAWINGS.
Figure 1 represents by a side view and Figure 2 by longitudinal

page_text: a is the point, or it may be other cutter, which by the quick rotary
motion given to it as it is borne against the object to be cut is to effect
the desired drilling or cutting. This point a or other suitable cutter is
applied with capability of replacement in a socket formed for it in the
end of the hollow rod or spindle b, and this hollow rod or spindle 6 is
supported by the bearings c¹, c², so as to admit of the free rotation of
the spindle 6 whilst it is carried by the tube c. The upper end of the
hollow spindle 6 is formed with hollow arms b¹, the form of which may
be varied, and orifices 6 at the opposite sides of the outer ends thereof
e shows by a dotted line a cage or other suitable guard to the revolving
arms 6 if desired.
Air or other fluid is supplied under pressure by a flexible pipe d to the
hollow tube c, whilst that is being held in the hand of the operator or is
otherwise supported. This fluid thence passes by channels b³ to the
interior of the hollow spindle 6 and to the arms 6 thereof, and thence
in effecting its escape by the passages 62 the desired rotation of the
spindle 6 is secured. By this means apparatus is obtained portable and
available for cutting in various directions at the will of the operator.
Having thus described my Invention and means which I adopt in
carrying the Invention into effect I would have it understood that what
I claim is the arranging or combining parts whereby quick rotary
motion may be obtained to an instrument for effecting the cutting,
drilling, engraving, or carving of metals or other materials in the
direction desired by the pressure of air or other fluid, substantially as
described.
In witness whercof, I, the said Edwin Lawrence, have hereunto
set my hand and seal, this Sixteenth day of June, in the
year of our Lord One thousand eight hundred and seventy-six.
Witness,
WILLIAM BROOKES,
62, Chancery Lane,
London.
EDWIN LAWRENCE. (L.S.)