IMPROVEMENTS IN CIRCULAR SAW BENCHES AND WOOD-CUTTING MACHINES WORKED BY HAND OR STEAM POWER.
Year: 1874

page_text: LETTERS PATENT to William Blackett Haigh, of Oldham, in the
County of Lancaster, for the Invention of "IMPROVEMENTS IN CIRCULAR
SAW BENCHES AND WOOD-CUTTING MACHINES WORKED BY HAND OR STEAM
POWER.
"
Sealed the 4th June 1875, and dated the 8th December 1874.
PROVISIONAL SPECIFICATION left by the said William Blackett Haigh
at the Office of the Commissioners of Patents, with his Petition, on
the 8th December 1874.
I, WILLIAM BLACKETT HAIGH, of Oldham, in the County of Lancaster,
do hereby declaro the nature of the said Invention for "IMPROVEMENTS
IN CIRCULAR SAW BENCHES AND WOOD-CUTTING MACHINES WORKED BY HAND OR
STEAM POWER," (to be as follows :-
This Invention relates, first, to that description of saw-benches in
which the spindle carrying the saw works in bearings at the ends of a
long collar, forming part of a swing frame jointed to the framework,
and provided with a slot for enabling the saw to be raised and lowered to

page_text: suit the different thicknesses of the wood to be sawn. At present in
this description of saw bench there is only one feed wheel, the speed of
which is varied by change wheels, the wheels having to be removed and
changed according to the required speed of the feed, and the object of
my present Invention is to prevent the loss of time and inconvenience
of changing these change wheels.
Instead of one feed wheel I employ two feeders, one adapted for light
and the other for heavy work, and instead of having change wheels I
use diminishing wheels having a constant number of teeth.
The shaft of the last diminishing wheel carrying the small feed wheel
works in holes in a bracket cast or fixed to the swing frame, and on this
shaft is fixed a pinion gearing into a toothed wheel working loose, and
having a boss formed at one end as a clutch, which can engage in a
similar clutch at one end of a scroll drum, working loose on the spindle
of the toothed wheel and connected by a cord or rope and hook to the
timber to be sawn, and it is this drum which forms the feeder for heavy
work when the two clutches are clutched together by means of a clutch
lever; for as the drum revolves the timber is pulled forwards by the cord
or rope which coils in the scroll and gives a decreased speed of feed
adapted for heavy work without change of gearing.
The small feed wheel when not required for use can be disengaged by
turning the swing frame by means of a handle, and at the same time the
drum feeder is in position for heavy work, and in all cases the swing
frame and parts in connection with it is held firm by means of a slotted
quadrant and bolt and nut.
The next part of my Invention relates to machines having cutters
fixed to revolving heads, and the improvement consists in fixing to the
spindle of the cutters or fly wheel, the momentum of which gives a
steady motion to the cutters, and thereby prevents the waved appearance
of the timber that at present occurs, and this improvement is applicable
to all hand or power planing, moulding, or wood-cutting machines in
which revolving cutters are used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Blackett Haigh in the Great Seal Patent
Office on the 8th June 1875.
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 Eighth day of December, in the
year of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Blackett Haigh, Her
special license that I, the said William Blackett Haigh, my executors,
administrators, 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 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
"IM-
PROVEMENTS IN CIRCULAR SAW BENCHES AND WOOD-CUTTING MACHINES WORKED BY
HAND OR STEAM POWER," 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
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 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 relates, first, to that description of saw bench in which
the spindle carrying the saw works in bearings at the ends of a long
collar, forming part of a swing lever jointed to the framework, the collar
and saw being raised and lowered to suit the different thicknesses of the
wood to be sawn, and the lever and collar afterwards held fast to the

page_text: framework. At present in this description of saw bench the drag motion
has only one feed wheel, the speed of which is varied by change wheels,
the wheels having to be removed and changed according to the required
speed of the feed, and the object of my present Invention is to prevent
the loss of time and inconvenience of changing these change wheels.
Instead of one feed wheel I employ two feeders, one adapted for light
and the other for heavy work, and instead of having change wheels I
have diminishing wheels having a constant number of teeth.
This Invention will be clearly understood by the following particular
description thereof, reference being had to the figures and letters on the
accompanying Sheet of Drawings, in which Figs. 1 and 2 are front and
end views of a hand power saw bench provided with my improve-
ments.
The saw spindle carrying the saw a, hand wheel b, and small pinion c
works in the ordinary long collar d fixed to the swing lever e, jointed to
the frame f, and held to it after being adjusted as required by any well
known means.
The pinion c gears into a toothed wheel g worked on a
stud fixed to a swing frame h, i, k, working on the collar d containing
the saw spindle, and to the wheel g is fixed a pinion gearing into the
last diminishing wheel m fixed to the shaft n carrying the small feed
wheel o, and for shewing it clearly in Fig. 2 the top of the saw is cut
away. The shaft n works in holes in a bracket p fixed to the swing
frame h, i, k, and on this shaft is fixed a pinion q gearing into a toothed
wheel r, working loose, and having a boss formed at one end as a clutch 8,
which can engage in a similar clutch at one of a drum t, working loose
on the shaft or spindle of the toothed wheel ", and connected by a cord
or rope and hook to the timber to be sawn, and it is this drum t which
forms the feeder for heavy work when the two clutches are clutched
together by means of a clutch lever u; for as the drum revolves the
timber is pulled forward by the cord or rope, which coils on the drum
and gives a decreased speed of feed adapted for heavy work without
change of gearing.
The small feed wheel when not required for use can be disengaged by
turning the swing frame by means of the handle i, and at the same time
the drum feeder tis in position for heavy work, and in all cases the
swing frame and parts in connection with it are held firmly in position
by bolting the quadrant & to the bracket w fixed to the framework.
E

page_text: The next part of my Invention relates to machines having cutters
fixed to revolving heads, and the improvement consist in fixing to the
spindle of the cutters a fly wheel, the momentum of which gives a
steady motion to the cutters, and thereby prevents the waved appearance
of the timber that at present occurs, and this improvement is applicable
to all hand or power planing, moulding, or wood-cutting machines in
which revolving cutters are used.
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 saw benches I claim,―
First. The employment of two feeders in each saw bench, one adapted
for light and the other for heavy work; and also the gearing for giving
the slow motion to the feed roller for heavy work, and the clutch box
and lever for putting it in and out of gear, as herein described and shewn
in the Drawings.
.
And, Secondly. In wood-cutting machines the use of fly wheels fixed
to the spindles of revolving heads and cutters for enabling them to have
a steady revolving motion.
In witness whereof, I, the said William Blackett Haigh, have here-
unto set my hand and seal, this Seventh day of June, in the
year of our Lord One thousand eight hundred and seventy-
Witness,
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.
、 W. B. HAIGH. (L.S.)