IMPROVEMENTS IN CIRCULAR SAW BENCHES
Year: 1869

page_text: LETTERS PATENT to William Blackett Haigh, of Oldham, in the
County of Lancaster, for the Invention of "IMPROVEMENTS IN CIRCULAR
SAW BENCHES."
Sealed the 22nd April 1870, and dated the 26th October 1869.
PROVISIONAL SPECIFICATION left by the said William Blackett
Haigh at the Office of the Commissioners of Patents, with his
Petition, on the 26th October 1869.
I, WILLIAM BLACKETT HAIGH, of Oldham, in the County of Lancaster,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN CIRCULAR SAW BENCHES," to be as follows:-
This Invention consists in the application to the saw bench of
improved mechanical arrangements for enabling saws of various
diameters to be adapted to different thicknesses of boards, planks, or
timber, and changing the speeds of the feed motion with great facility
and despatch.

page_text: The saw spindle works in bearings in a swing frame having a bolt
placed in a curved slot in a bracket fixed to the table, which arrange-
ment enables the frame and saw to be raised and lowered as required,
and afterwards kept in position by the bolt; and to the saw spindle is
fixed a handle and fly wheel when the saw is to be turned by hand.
On a boss or bearing of the saw spindle there is a slotted lever carrying
a long collar, through which there is a spindle having at one end a feed
wheel, and at the other end a toothed wheel gearing into a change wheel
on a stud or shaft connected to a bracket on the swing frame, and on tho
stud or shaft there is another change wheel gearing into a pinion on the
saw spindle, there being a slot in the bracket for enabling different sizes
of change wheels to be employed. By means of the slotted lever and
slotted bracket the feed and change wheels can be readily adjusted to
different thicknesses of wood and different diameters of saws, and as the
bearing of the slotted lever is the same as the saw spindle it follows tho
course of the swing frame, and the feed wheel is close up to the teeth of
the saw; and for keeping the slotted lever fast after adjustment there is
a rod passed through a swivel and held fast by a screw and nut. At the
front of the saw there is a roller, and at one side a filling-up picco
supported on a swivel bracket, which can be turned back when the saw
has to be changed. The fence is fixed to a spindle fitted in a block on a
cross shaft, to which it is held by a screw, which arrangement enables
the fence when the screw is loosened to be placed at both sides of the
saw, and also at any required angle.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 2
filed by the said William Blackett Haigh in the Great Scal Patent
Office on the 26th April 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BLACKETT HAIGH, of Oldham, in the County of Lancaster, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of October, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
3

page_text: give and grant unto me, the said William Blackett Haigh, Her special
licence, that I, the said William Blackett Haigh, my executors, adminis-
trators, and assigns, or such others as I, the said William Blackett
Haigh, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 Inven-
tion for "IMPROVEMENTS IN CIRCULAR SAW BENCHES," upon the condition
(amongst others) that I, the said William Blackett Haigh, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and scals, 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 Scal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent,
NOW KNOW YE, that I, the said William Blackett Haigh, 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 (that is to say) :-
:-
This Invention consists in the application to the saw bench of
improved mechanical arrangements for enabling saws of various
diameters to be adapted to different thicknesses of boards, planks, or
timber for changing the speeds of the feed motion with great facility
and despatch, and for enabling the fence to be placed at both sides of
the saws either vertically or at any required angle.
The manner in which this Invention is to be performed will be clearly
understood by the following particular description thercof, reference
being had to the figures and letters on the accompanying Sheet of
› Drawings, in which Figs. 1 and 2 are side and end elevations, and Fig. 3
a plan of a circular saw bench provided with my improvements; and
Figs. 4 and 5 are side and end views of detached parts of the same.
The saw spindle a carrying the saw b, Figs. 1, 2, 3, 4, and 5, works in
bearings at the ends of a long collar c forming part of a swing frame d
jointed to the pin e, and having a bolt f placed in a curved slot g in
the bracket fixed to the table i, which arrangement enables the saw

page_text: spindle and saw to be raised and lowered as required, and afterwards
kept in position by the bolt; and to the saw spindle is fixed the hand
wheel when the saw has to be turned by hand. On one end of the
collar c there is a slotted lover & carrying a cannon or collar 1, through
which there is a spindle m having at one end a feed wheel n, and at the
other end a toothed wheel o gearing into a change wheel p on a stud q
fixed to the lever k, and on the stud there is another change wheel r
gearing into a pinion s on the saw spindle a, there being a curved slot t
in which the stud q is placed for enabling different sizes of chango
wheels to be employed. By means of the slotted lever k, the swing
frame d, and slotted bracket the feed and change wheels can be readily
adjusted to different thicknesses of wood and different diameters of saws,
and as the bearing of the slotted lever is on the bearing of the saw
spindle it follows the course of the swing framo, and the feed wheel is
always nearly close to the teeth of the saw, and for keeping the slotted
lever k fast after adjustment there is a rod u passed through a swivel o
and held fast by a screw w. At the front of the saw there is a roller x,
and at one side a filling-up piece y supported on a swivel brackets,
which can be turned back when the saw has to be removed or changed.
The fence a' is fixed to a spindle b'fitted in a block c¹ on a cross shaft d',
to which it is held by a screw e', which arrangement enables the fence
when the screws e¹ and f¹ are loosened to be placed at either side of
the saw, and also at any required angle.
Having now described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I desire it to be
understood that in circular saw benches I claim,-
First. The cannon or collar 2, Figs. 2 and 3, for carrying the shaft of
the feed wheel 12,
Secondly. The mode of turning the feed wheel by direct or positivo
toothed gearing,
Thirdly. The lever k working on the swing framed with its curved
slot for regulating the change wheels, and the straight slot for enabling
the position of the feed wheel to be changed as required.
Fourthly. The rod u, swivel v, and screw to for holding the lever k
fast after adjustment.

page_text: And, fifthly. The swivel bracket, which is turned back when the
saw has to be removed or changed, as all such improvements aro herein
described and illustrated in the accompanying Sheet of Drawings.
In witness whereof, I, the said William Blackett Haigh, have
hereunto set my hand and seal, this Twenty-third day of April, in
the year of our Lord One thousand eight hundred and seventy.
WILLIAM BLACKETT HAIGH. (L.S.)
Signed, scaled, and delivered by
the within-named William
Blackett Haigh,. in the pre-
sence of
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.