IMPROVEMENTS IN MACHINERY FOR SAWING WOOD AND OTHER SUBSTANCES
Year: 1861

page_text: LETTERS PATENT to the Honorable Cecil Duncombe, of Camelford
House, Hereford Street, Park Lane, in the County of Middlesex, for
the Invention of "IMPROVEMENTS IN MACHINERY FOR SAWING WOOD AND
OTHER SUBSTANCES."
Scaled the 10th December 1861, and dated the 18th June 1861.
PROVISIONAL SPECIFICATION left by the said Honorable Cecil Duncombe
at the Office of the Commissioners of Patents, with his Petition, on tho
18th June 1861.
I, the Honorable CECIL DUNCOMBE, of Camelford House, Hereford Street,
Park Lane, in the County of Middlesex, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN MACHINERY FOR SAWING WOOD AND OTHER
SUBSTANCES," to be as follows:-
This Invention consists of certain machinery for sawing wood and other
materials or substances for fret or buhl work. Upon the saw table is secured
an arm, under which the work is placed; through the end of this arm is
passed a slide, to which is attached the vertical saw, and below the saw
another guide rod; this rod is actuated by a small crank, which is attached to
the pillar or stand of the machine, and is provided at one extremity of its
spindle with a small V-grooved wheel, round which is an endless band, said band
also passing into a groove on the fly wheel. The fly wheel is set in motion by
an ordinary treadle and moves the guide rods and saw up and down. A

page_text: powerful spring is attached to the top of the arm, which lifts the saw up as the
crank revolves, and a spiral spring may be placed on the lower rod to keep
the saw stiff.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Honorable Cecil Duncombe in the Great Seal Patent Office
on the 13th December 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, the
Honorable CECIL DUNCOMBE, of Camelford House, Hereford Street, Park
Lane, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of June, in the year of our Lord One
thousand eight hundred and sixty-one, in the twenty-fourth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Honorable Cecil Duncombe, Her special licence that I, the said Honorable
Cecil Duncombe, my executors, administrators, and assigns, or such others
as I, the said Honorable Cecil Duncombe, 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 FOR SAWING WOOD AND OTHER
SUBSTANCES," upon the condition (amongst others) that I, the said Honorable
Cecil Duncombe, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Honorable Cecil Duncombe, 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:
This Invention consists of certain machinery for sawing wood and other
substances for fret, buhl, or other ornamental openwork in a more simple,
speedy, and efficient manner than by the machinery ordinarily used for the
sanie purpose.

page_text: proceed to describe the best means I am acquainted with for carrying the same
into practical effect, reference being had to the illustrative Sheet of Drawings
hercto annexed, and to the numeral figures and letters of reference marked
thereon respectively, as follows:-
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation of the machine as it would appear when ready for
use; and Fig. 2, a plan view of the saw table and guide plate, similar
letters of reference denoting corresponding parts at each of the figures
respectively.
At Fig. 1 it will be seen that upon the saw table a is secured an arm b,
under which the work is placed, the further extremity only of the arm 6 being
firmly fixed to the saw table a, the remaining portion being some distance
above the table a, as shewn. The end of the arm 6 is furnished with a gun
metal slot or bearing, in which the guide rod c works, it being attached to the
upper extremity of the vertical saw blade d; and below the table, by means of
a projection from the standard, another slot or bearing is arranged, in which
works a corresponding guide rod c, attached to the lower extremity of the saw
blade. To the lower extremity of this guide rod e is attached a connecting
rod f, actuated by a small band wheel 9 and crank, the band passing under
the wheel g, and over another wheel h, attached to the fly wheel i, which fly
wheel is also provided with a groove or grooves for the band to take into,
where great speed is required. It will be seen that the treddle j is continued
past its fulcrum, the further extremity of which has attached thereto a rod in
connection with a crank on the fly wheel, by which means the machine is set
in motion. A horizontal spring k is secured to the end of the arm b, so that
as the rod f draws the saw blade down, the spring k is simultaneously drawn
down, the spring & acting upon the saw blade in an upward direction imme-
diately the crank on the band wheel g passes the lower dead point; a spiral
spring may also be placed on the lower rod to keep the saw rigid; small fric-
tion rollers are to be placed above the end of the spring k, and attached to
the upper end of the guide rod c, for greater ease in working. In order to fix
and adjust the saw blade a,circular or other shaped metal plate m, Fig. 2,
having a slot cut therein, is dropped into a recess in the table formed for its
reception, so that it can be removed at any time to fix in or take out the
saw, as occasion may require.
Having now described the nature of my said Invention of "Improvements
in Machinery for Sawing Wood and other Substances," and the manner in

page_text: which the same is to be performed, I would remark, in conclusion, that I do
not confine or restrict myself to the precise details.herein described and shewn,
as many slight modifications and variations may be made therein without at
all departing from the principle of my Invention; but what I claim as my
Invention, and therefore desire to be secured to me by the herein in part
recited Letters Patent, is, the general arrangement and combination of parts,
as herein described and shewn by the accompanying Drawing, or any modifica-
tion thereof substantially the same, and constituting a machine for sawing
wood or other substances, as herein. described and set forth.
In witness whereof, I, the said Honorable Cecil Duncombe, have here-
unto set my hand and seal, this Eleventh day of December, in the
of our Lord One thousand eight hundred and sixty-one.
year
Witness,
ALEX PRINCE,
Agent for Patents,
4, Trafalgar Square,
Charing Cross..
CECIL DUNCOMBE. (L.B.)