Improvements in Wood Sawing Machinery.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Chief Examiner of the 1st day of December 1897.
Date of Application, 6th July, 1896
Complete Specification Left, 6th Apr., 1897-Accepted, 29th May, 1897
Improvements in Wood Sawing Machinery.
We JOHN KERSHAW and ROBERT KERSHAW of the Firm of Kershaw Brothers,
Railway Iron Works, Hebden Bridge in the County of York Saw Mill Engineers,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to construct roller feed circular saw benches so
that the mechanism for moving or adjusting the feed roller to the saw or timber
is underneath the table so producing a neater machine, also that the deal or other
wood may be cut at any angle or bevel required.
We preferably construct our roller feed saw benches with the feed roller
operated or adjusted to the saw by means of a compound or double slide fixed
underneath the table, one slide working at right angles to the saw and the other
parallel with the saw these slides are operated by screws and hand wheels in any
suitable manner. A shaft passes through the slide working parallel with the saw,
at one end of which is a suitable gear wheel operated from the saw spindle. At
the other end of this shaft is a bevel wheel gearing with a second wheel upon the
vertical shaft carrying the feed roller, for operating same. Upon the slide we
also preferably employ a suitable swivel face plate or tumbler which works in
conjunction with a second face plate or disc upon the bracket carrying the vertical
shaft; within these face plates are suitable slots and bolts by which the feed roller
may be canted or set to feed the timber for cutting same at any angle or bevel
required.
Or in place of the compound slide we may fix a radial arm (carrying the feed
roller) underneath the table, the said radial arm is adjustable so that the feed roller
may be moved nearer to or further from the saw according to the thickness of the
timber being cut, also the said feed roller may be moved backwards and forwards
upon the table to suit the different sizes of saws being employed.
The mechanism for canting the feed roller being preferably fixed in this instance
in the middle of the said arm and may be operateil by any suitable mechanism.
Dated this Fourth day of July 1896
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicants.

page_text: We, JOHN KERSHAW and ROBERT KERSHAW of the Firm of Kershaw Brothers,
Railway Iron Works, Hebden Bridge in the County of York Saw Mill Engineers,
do hereby declare the nature of this invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the fol-
lowing statement:-
The object of this invention is to construct roller feed circular saw benches so
that the mechanism for moving or adjusting the feed rollers to the, saw or timber
is underneath the table, so producing a neater machine, and by which deal or other
timber may be cut at any angle required.
DESCRIPTION OF DRAWINGS.
Fig. 1, is a sectional end elevation of our improved mechanism in connection
with roller feed circular saw frames.
Fig. 2, is a plan of Fig. 1.
Fig. 3, is a side elevation partly in section of Fig. 1.
We preferably construct our roller feed ciroular saw benches with the mechanism
for adjusting the feed rollers to the saw, or to the timber underneath the table,
such mechanism consisting of a compound or double slide, one slide A working at
right angles to the saw and is for adjusting the feed rollers to the timber, the other
slide B works parallel with the saw and is for adjusting the feed rollers to the saw,
according to the size of saw being employed.
The ordinary feed rollers C are mounted upon a vertical shaft C', and driven by
means of bevel gear D from a horizontal shaft E, this horizontal shaft passes
through the slide A, and is supported by the boss F of the bracket or swivel face
plate or disc G, carrying the feed roller shaft C₁; upon this shaft E and at the
opposite end to the bevel gear is a suitable chain wheel H which is connected by
chain H with the driving mechanism of the frame.
Upon the slide A is a face plate A¹ which operates in conjunction with the
swivel face plate or tumbler disc G carrying the feed roller shaft C, a stud J upon
the face plate of the slide A, works within a slot K in the tumbler disc G, and with
nut K', is used for setting the feed rollers to any angle or bevel required.
For adjusting the position of the guide rollers or fence L to the angle of the
feed roller C, we preferably pivot or hinge the fence L, upon a stud L', at the back
of this frame is attached a suitable toothed quadrant M, gearing with this quadrant
is a worm M', mounted upon a bracket M² the position of the rollers L being set
to the required bevel by means of nut N, upon the worm shaft or stud N¹.
For adjusting the feed rollers to the saw the feed rollers are moved nearer to or
further from the same by means of a screwed spindle P, operated by hand
wheel P¹.
For adjusting the feed rollers to the timber, they are moved backwards and
forwards by means of screwed spindle R and handle R¹.
The feed rollers are operated from the saw spindle S by means of a pulley S¹
upon a cross shaft S2, which with cones T and belt, drives a second cross shaft T¹,
at the opposite end of the frame, upon this shaft T¹ is a worm T gearing with a
worm wheel Ts upon a longitudinal shaft U with a sliding key U, this longitudinal
shaft U drives, by means of the chain H' and chain wheel H, the shaft before
described; a forked bracket or arm V, attached to the slide A, and working within
a grooved coller V, moves the chain wheel H³ upon the shaft U in proportion to
the traverse of the slide A upon the slide B. The pressure of the feed rollers

page_text: upon the timber is maintained by means of weight Y connected by chain Y¹ passing
over pulley Y2 to the slide A, the bracket Z carrying pulley Y being upon a
swivel stud allows the pulley to adjust itself to the drag of the slide A.
We also preferably employ a sliding pocket plate W in place of the ordinary
pocket plate, so that by sliding the plate in the table, the saw W may be removed
or replaced with little if any trouble, the plate being easily moved back into
position, also when not required the feed rollers may be lifted out and a small plate
placed in the square hole X, formed in the pocket plate for the movement or
adjustment of the feed rollers, and the frame used as a plain saw bench for feeding
by hand.
By this construction of roller feed saw benches, we dispense with the radial
arm usually employed for adjusting the position of the feed rollers to the timber
and by our arrangement, when required to cut the timber at an angle or bevel,
the nut K is slackened and the tumbler disc G though supporting the driving
shaft E and gearing 1) for operating the feed roller shaft C¹ is loose upon the said
shaft E and may be pushed over to any angle required, the nut is then tightened,
the guide rollers L by means of worm and toothed quadrant adjusted to correspond,
and the frame is again ready for work.
By placing the adjusting mechanism underneath the table, a clear and open
bench is obtained, without the possibility of the passage of the timber when being
cut, interfering with the feed mechanism of the frame or such mechanism being
in the way of the attendant.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we are aware that
the tilting of the fence and the tilting of the feed rollers are neither of thein new
and we do not claim such parts separately but we declare that what we claim
is:-
1. In wood sawing machines, the combination with a fixed table having a sliding
pocket plate, of a double slide attached to the underside of the said table, one
slide being for adjusting the feed rollers nearer to or further from the fence or
wood, and the other for adjusting the feed rollers to the saw, in the manner and
for the purposes, substantially as shown and described.
2. In wood sawing machines having fixed tables the combination upon the
slide A of a face plate A with tumbler disc G carrying the feed roller shaft and
stud J working within a slot K and nut K in the said tumbler disc for adjusting
and setting the feed rollers to any angle required substantially as shown and
described.
3. In wood sawing machinery, the use and employment of a longitudinal shaft lj
with sliding key U operated from-the saw spindle, arm V and collar V, chain H¹
and chain wheels H and H³, and shaft E operating in the manner and for the
purposes substantially as shown and described.
Diner
1005
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicants.