IMPROVEMENTS IN SAWING MACHINERY
Year: 1864

page_text: LETTERS PATENT to Robert Mathers, of Boundary Terrace, Burley Road,
Leeds, in the County of York, for the Invention of "IMPROVEMENTS IN
SAWING MACHINERY."
Sealed the 6th June 1865, and dated the 12th December 1864.
PROVISIONAL SPECIFICATION left by the said Robert Mathers at the
Office of the Commissioners of Patents, with his Petition, on the 12th
December 1864.
I, ROBERT MATHERS, of Boundary Terrace, Burley Road, Leeds, in the
County of York, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SAWING MACHINERY," to be as follows:-
This Invention has for its object improvements in sawing machinery. For
these purposes the ends of a narrow saw are fixed to the ends of two flexible
bands which respectively are attached to two levers having curved ends cor-
responding with the radii from the centres of the axes on which the levers
vibrate. The upper (or it may be either) of these bands is capable of adjust-
ment in order that the saw may be kept at the proper tension. The back ends
of the levers are formed with similar curves, and they are connected together
by a metal band, by preference of steel, the tension on which is capable of

page_text: being adjusted. The upper part of the framing which supports the carriage
or bearing of the upper lever comes forward or overhangs the lower part, so
that the largest space may be obtained for the table and for the work placed
thereon when using a given length of lever. The saw as heretofore works
through the table, and the work is held down on the table by means of a
presser rod having at its lower end a presser consisting of a series of discs
with rounded edges on an axis, a space being left between the central discs to
admit of the saw working between them. The presser rod is carried by an
arm fixed to the framing, and the socket of the rod is made capable of adjust-
ment at the end of the arm which carries it. Motion is communicated to the
levers by means of a connecting rod, one end of which is pinjointed to one of
the levers, and the other end is connected to a crank pin which is arranged to
slide to and from the shaft or axis on which the face plate or disc is affixed.
On the shaft or axis which carries the disc or plate is a fly wheel, and the
shaft or axis receives motion from a steam engine or other power, or by a
crank handle worked by manual power, in which case gearing or chain and
chain wheels is or are applied between the crank handle and the fly wheel
shaft. In some machines the ends of the levers are connected by two saws
and straps, and two tables for work are used.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Mathers in the Great Seal Patent Office on the
10th June 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
MATHERS, of Boundary Terrace, Burley Road, Leeds, in the County of York,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of December, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-eighth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Robert Mathers, Her special licence that I, the
said Robert Mathers, my executors, administrators, and assigns, or such others
as I, the said Robert Mathers, my executors, administrators, and assigns,
should at y 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

page_text: and Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN SAWING MACHINERY," upon the condition (amongst others) that I, the
said Robert Mathers, 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 Robert Mathers, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
This Invention has for its object improvements in sawing machinery. For
these purposes the ends of a narrow saw are fixed to the ends of two flexible
bands which respectively are attached to two levers having curved ends corres-
ponding with the radii from the centres of the axes on which the levers
vibrate. The upper (or it may be either) of these bands is capable of adjust-
ment in order that the saw may be kept at the proper tension. The back
ends of the levers are formed with similar curves, and they are connected
together by a metal band, by preference of steel, the tension on which is
capable of being adjusted. The upper part of the framing which supports
the carriage or bearing of the upper lever comes forward or overhangs the
lower part so that the largest space may be obtained for the table and for the
work placed thereon when using a given length of lever. The saw, as bereto-
fore, works through the table, and the work is held down on the table by
means of a presser rod having at its lower end a presser, consisting of a
series of discs with rounded edges on an axis, a space being left between the
central discs to admit of the saw working between them. The presser rod is.
carried by an arm fixed to the framing, and the socket of the rod is made capable
of adjustment at the end of the arm which carries it. Motion is communicated
to the levers by means of a connecting rod, one end of which is pinjointed*
to one of the levers and the other end is connected to a crank pin which is
arranged to slide to and from the shaft or axis on which the face plate or
dise is affixed. On the shaft or axis which carries the disc or plate is a fly
wheel, and the shaft or axis receives motion from a steam engine or other
power or by a crank handle worked by manual power, in which case gearing
or chain and chain wheels is or are applied between the crank handle and the
fly wheel shaft. In some machines the ends of the levers are connected by
two saws and straps, and two tables for work are used.

page_text: Having turus stated the nature of my sand invention, I will proceed more
fully to describe the manner of performing the same,
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a side elevation of a machine having my improvements
applied thereto, which machine works with only one saw which is kept
stretched between the front ends of the two levers b, b, the axes of which turn
in bearings carried by the framing a, a, the other ends of the two levers are
connected by a flexible band which is by preference of steel. The curved
front ends of the levers b, b, have flanges as shown by dotted lines. The
tension of the saw is capable of being adjusted as shown, and there is a spiral
spring at c to impart elasticity; D, D, show the pitch lines of two spur
wheels which are used when the machine is intended to be worked by hand,
but when a machine is to be driven by steam or other power a fast and loose
pulley are applied on the shaft E; on the shaft E is a stud plate, the stud or
crank pin of which is capable of being adjusted to and from the shaft E.
Motion is given to the lower one of the two levers b, b, by means of a con-
necting rod L, and the upper lever receives its motion from the lower one by
the saw and the metal; G is a projecting arm which is supported by and is
fixed at its back end to the framing of the machine; M is a presser rod which
is carried by the front end of the arm G, and its position is capable of adjust-
ment as shown at Figures 2 and 3, where the parts are drawn on a larger
scale. At the lower end of the presser rod M is a bent spring which carries
a horizontal axis on which are several circular discs which press on the upper
surface of the work which is on the table. The presser rod is held by and
adjusted in the holder II, and is retained in position by the screw and handle g.
The holder H is secured to the front end of the arm G, and is adjusted by a
similar screw and handle to those just described; the saw works between two
of the discs as is shown in Figure 3. When desired a machine is according
to my Invention arranged to work with two saws, one at each end of the two
levers b, b, as is shown in the side elevation, Figure 4, of the Drawings; in
this arrangement it is convenient to connect one end of the connecting rod to
a slotted arm on the lower lever b as is shown. The parts of this machine
being marked with the same letters of reference as are used to indicate the
same parts in the machine shown in Figures 1, 2, and 3, and as such parts
are combined and worked in like manner to what has been already explained,
no further description thereof will be necessary.
Having thus described the nature of my Invention and the manner of
performing the same, I would have it understood that I make no claim to any

page_text: of the mechanical parts separately, but what I claim is the combined arrange-
ment herein described.
In witness whereof, I, the said Robert Mathers, have hereunto set
my hand and seal, this Sixth day of June, in the year of our Lord
One thousand eight hundred and sixty-five.
ROBERT MATHERS. (L.S.)