IMPROVEMENTS IN SAWING MACHINERY
Year: 1870

page_text: LETTERS PATENT to Thomas Fawcett, of the Saw Mills, Dewsbury,
in the County of York, Joiner, Builder, and Timber Merchant, for
the Invention of "IMPROVEMENTS IN SAWING MACHINERY."
Sealed the 11th November 1870, and dated the 16th May 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Fawcett at
the Office of the Commissioners of Patents, with his Petition,
on the 16th May 1870.
I, THOMAS FAWCETT, of the Saw Mills; Dewsbury, in the County of
York, Joiner, Builder, and Timber Merchant, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN SAWING MACHINERY,”
to be as follows :-
:-
This Invention relates to machinery for sawing or cutting and forming
spouts or troughing for buildings and similar other continuous hollow.
or round surfaces in wood or other material capable of being sawn or
cut with a saw, and for which Letters Patent were granted to James
and William Henry Blakeley, dated the Twenty-eighth day of June
1860. In the Specification of the above-recited Patent a cylindrical

page_text: saw open at both ends is described, which is driven or caused to rotate
by means of a drum having pins on its surface to enter perforations in
the saw, or by a belt betwixt them passing around the drum and a
roller on each side with a friction roller or pressing roller covered with
leather placed inside to press the saw into contact with the drum on 5
the belt thereon. Now my improvements consist in dispensing with
the leather belt and the side rollers, and instead I construct the drum
surface with rings of leather by preference arranged and placed edgewise
towards the periphery and closely screwed together, also the pressing
roller instead of being covered with leather I construct of steel, and 1
to steady the saw or hold it in position I apply to each side adjustable
pins of wood or other suitable material projecting into contact
therewith.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Fawcett in the Great Seal Patent Office ]
on the 16th November 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
FAWCETT, of the Saw Mills, Dewsbury, in the County of York, Joiner,
Builder, and Timber Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 2
Letters Patent, bearing date the Sixteenth day of May, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Thomas Fawcett, Her special licence that I,
the said Thomas Fawcett, my executors, administrators, and assigns, ?
or such others as I, the said Thomas Fawcett, my executors, adminis-
trators, 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 SAWING
MACHINERY," upon the condition (amongst others) that I, the said Thomas
Fawcett, 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

page_text: 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 Thomas Fawcett, 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 and two accompanying Sheets of Drawings, (that
is to say) :-
This Invention relates to machinery for sawing and cutting and
forming spouts or troughing for buildings and similar other continuous.
hollow or round surfaces in wood or other material capable of being.
sawn or cut with a saw, and for which Letters Patent were granted to
James Blakeley and William Henry Blakeley, dated the Twenty-eighth
day of June 1860, and Number 1566. In the Specification of the
Patent referred to a cylindrical saw open at both ends is described,, which
is driven or caused to rotate by means of a drum having pins. on-its-
surface to enter perforations in the saw, or by a belt betwixt them.
passing around the drum and a roller on each side with a friction roller
or pressing roller covered with leather placed inside to press the saw
into contact with the drum or the belt thereon. Now my improvements
consist in dispensing with the leather belt and the side rollers, and
instead I construct the drum surface with rings of leather by preference
arranged and placed edgewise towards the periphery, and closely
screwed together. Also the pressing roller instead of being covered
with leather, I construct of steel, and to steady the saw or hold it in
position I apply to each side adjustable pins of wood or other suitable
material projecting into contact therewith.
In order that the Invention may be fully understood, I herein give
reference to two accompanying Sheets of Drawings illustrating a
machine constructed in accordance therewith.
Fig. 1 is an end elevation; Fig. 2 is a plan partly in section ; and
Fig. 3 is a longitudinal section of the same.
A is the cylindrical saw, B is the drum which is composed of a
boss B', having a flange at one end, B³, and two loose flanges or
rings B³, between which are a series of rings of leather B', the whole
being pressed together by screw bolts B³, and the periphery turned or cut
evenly to a proper cylindrical surface so as to support or carry and drive
the saw. This drum is fixed on a shaft C, which is supported in suitable /
bearings D and D¹. On each end of this shaft is also fixed a pulley E

page_text: and E¹, by means of which and belts F and F rotary motion is com-
municated to the said shaft C, and consequently to the drum B, from
the main driving shaft G, by pullies G¹ and G³ fixed thereon. H is the
pressing roller, which by preference is made of steel, and is supported in
bearings I. The said roller passing through the saw rests upon its
interior surface, and on each end of this roller is formed or fixed a
pulley J and J, which the belts F and F¹ pass over or around, and by
which motion is communicated thereto from the main shaft. The
belts F and F also pass over pullies K and K¹, carried on studs which
are adjustable in position by means of the screws L, which when turned
will move the slide blocks M (in which the studs are fixed) in the slot
of the framework, so that the tension of the belts can be regulated. A
shoulder or collar H is formed on the pressing roller for the back
end of the saw to abut against, and there is also a small collar H³ on
the said roller, which enters a corresponding groove in the saw, thereby
retaining the saw in position or preventing its forward movement when
not sawing. N are the adjustable pins fixed in slidable blocks or
blocks O capable of being moved and adjusted in the framework by
means of the screws P, so as to fit and bear against the sides of the
cylinder, and thus maintain it in proper lateral position.
The other parts of this machine which I have shewn in these Drawings,
although necessary parts in the working or carrying of the Invention into
practice, yet they not being new but well known, and therefore forming
no part of my said Invention, I have deemed it unnecessary to refer
specially to them. I may however observe that the bearing frames
which carry the drum B and the pressing roller H are capable of
adjustment, so as to place the saw at any desirable position in relation
to the surface of the table R, they being hinged at one end respectively
at S and T, and the other ends being secured by adjusting screws
U and V, by the turning of which the said shafts are readily raised and
lowered, as may be required. It will now be easily understood that by
the pressure of the roller H upon the interior of the saw it is held in
close contact with the drum B (the frictional or adhesive qualities of the
leather being well known), and rotary motion is thereby given to the
saw, the collars Hand H, and the pins N keeping it in position, so that
when wood or other material capable of being sawn are passed over
the table against the teeth of the saw they will be cut thereby.to the
llow for m of the cylinder. It will also be evident that a drum whose

page_text: surface is covered with leather or other adhesive material may be
employed for this purpose and in a similar manner.
Having thus described the nature of this my said Invention and
shewn by Drawings in what manner the same is or may be performed,
I would have it understood that I do not claim the whole of the parts
herein described and shewn, nor do I confine myself to the precise
details in the construction and arrangements thereof, but what I claim
as of my Invention is,―
Firstly. The method of driving cylindrical saws in manner substantially
as herein described.
Secondly. The general construction and arrangement of the machinery
for that purpose, shewn and described.
In witness whereof, I, the said Thomas Fawcett have hereunto set
my hand and seal, this Twelfth day of November, in the year of
our Lord One thousand eight hundred and seventy.
Signed, sealed, and delivered by the
within-named Thomas Fawcett, in
the presence of
JAMES COULTER,
Woodville Rise,
Dewsbury.
THOMAS FAWCETT. (L.s.)