Improvements in Circular Saw Benches.
Year: 1894

page_text: Date of Application, 24th Sept., 1894
Complete Specification Left, 20th June, 1895-Accepted, 20th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in Circular Saw Benches.
I, THOMAS NIELD ROBINSON, of Thomas Robinson and Son Limited, of
Railway Works, Rochdale, in the County of Lancaster, Engineer, do hereby
declare the nature of this invention to be as follows:-
My invention relates to circular saw benches chiefly for cutting out light stuff
for mouldings, and small deals into boards &c., and the object of my improvements
is to construct a simple and efficient feed motion.
In carrying out my invention I employ a driven fluted or roughened feed roller,
mounted upon a vertical spindle, carried by one arm of a lever pivoted on a bracket
preferably cast with, or secured to the adjustable saw fence. For the purpose of
preventing the feed roller being pulied against the fence when the saw bench is
running and there is no timber being operated upon, we fit an adjustable stop piece
to the other end of the arm, or to the saw bench.
A convenient mode of driving the feed roller, by means of a rope or band
which passes over a grooved pulley, secured upon a shaft driven preferably from
the saw spindle, and an intermediate shaft, or in any other convenient manner; the
band passes under a guide pulley mounted upon a pivoted weighted lever, over a
guide pulley carried by a bracket on the saw bench, then to a grooved pulley
secured upon the spindle of the feed roller, thence over a guide pulley on the
bracket last mentioned, and under a second pulley carried by the pivoted weighted
lever back to the grooved pulley on the driven shaft; the guide pulleys on the
pivoted lever, aided by a suitable weight or spring serving to maintain the necessary
tension on the band notwithstanding the variations in thickness of timber being
operated upon, and also to hold the driven fluted feed roller in contact with the
timber being cut, and impart sufficient pressure to it to enable it to feed the timber
without slipping.
Dated this 22nd day of September 1894.
Improvements in Circular Saw Benches.
I, THOMAS NIELD ROBINSON, of Thomas Robinson and Son Limited, of
Railway Works, Rochdale, in the County of Lancaster, Engineer, 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 following
statement:-
My invention relates to circular saw benches chiefly for cutting out light stuff
for.mouldings, and small deals into boards &c., and the object-of my improvements
is to construct a simple and efficient feed motion.
In carrying out my invention I employ a driven fluted or roughened feed roller,
mounted upon a vertical spindle, carried by one arm of a lever pivoted on a bracket
preferably cast with, or secured to the adjustable saw fence. For the purpose of
preventing the feed roller being pulled against the fence when the saw bench is
running and there is no timber being operated upon, I fit an adjustable stop piece
to the other end of the arm, or to the saw bench.

page_text: And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying two sheets of drawings reference being bad
to the figures and letters marked thereon.
Similar letters refer to similar parts throughout the several views.
Fig. 1 is a side elevation and Fig. 2 a plan view of a circular saw bench fitted
with my improved roller feed and a canting fence, and
Fig. 3 is an end view of Fig. 1 in which the canting fence and the feed roller are
shown in a different position.
In the drawings, a represents the frame of the saw bench, & the circular saw,
mounted upon a spindle c which carries a pair of fast and loose pulleys d d driven
from a counter shaft and belt, not shown; on the saw spindle is secured a small
pulley e which by means of a belt, not shown, gives motion to a pulley f secured
upon an intermediate shaft g carried in brackets on the bench frame a; a cone
pulley g' on this shaft is connected by a belt, not shown, to a similar cone ¹ secured
upon a shaft which is carried in brackets on the frame a at the other end of the
machine. A spur pinion i keyed upon the shaft h gears into a spur wheel j' keyed
upon a shaft and communicates motion to it and on this shaft is secured a grooved
pulley k around which a band or rope / passes for the purpose of giving motion to
the feed. A fluted feed roller m is secured to a spindle n carried by one arm of
a lever o pivoted on a bracket or stud p secured to or cast with the adjustable
fence q which fence is mounted in slides on the top of the bench frame a as usual
and set as required by a screw q'; the other arm of the lever o comes against a
stop piece on the end of a screwed stud the position of which is adjusted by a
hand wheel so as to prevent the feed roller m being pulled against the fence when
no timber is being operated upon. The band passes from the pulley k under a
grooved pulleys mounted upon a levert pivoted at t¹ and weighted by a rod and
weights 2, shown in Fig. 1 only; from the grooved pulleys the band! passes
upward over a guide pulley u and thence round a grooved pulley n' secured to the
spindle n of the feed roller m to which it gives motion; the band returns over a
guide pulley u' which with the pulley u is carried by a bracket u² secured to the top
of the saw bench; from this guide pulley it passes downward to a grooved pulleys,
carried by the weighted lever t, back to its driving pulley mounted upon the
shaft. The guide pulleys & mounted upon the pivoted levert aided by the
weights serve to maintain the necessary tension on the band notwithstanding
the variation in thickness of timber being operated upon and also to hold the driven
fluted feed roller in contact with the timber being cut and impart sufficient pressure
to it to enable the timber to be fed without slipping.
Although the drawings represent my improved feed mechanism applied to a
canting fence it is obvious that it can be applied to an ordinary adjustable
fence.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
--
In a circular saw bench-
1. In combination, a feed roller mounted on a spindle carried by a lever pivoted
on the adjustable saw fence, an adjustable stop to prevent the feed roller being
pulled against the fence, and means for driving the feed roller all substantially as
and for the purposes herein set forth.
2. The general combination and arrangement of parts embodying my improve-
ments substantially as herein set forth.
Dated this 19th day of June 1895.
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester, Agents for Applicant.