An Improvement in the Feed Motion of Oiroular Sawing Machines.
Year: 1891

page_text: Date of Application, 9th July, 1891
Complete Specification Left. 18th Mar. 1892-Accented. 23rd Apr.. 1892
PROVISIONAL SPECIFICATION.
An Improvement in the Feed Motion of Oiroular Sawing
Machines.
I, THOMAS NIELD ROBINSON, of the firm of Thomas Robinson and Son
Limited, of Railway Works, Rochdale, in the County of Lancaster, Machine
Maker, do hereby declare the nature of this invention to be as follows :-
My invention. relates to the feed motion of circular sawing machines and my
improvement consists in mounting a driven feed roller in an arm which radiates
from a centre placed on the side of the circular saw spindle opposite to that of the
fence and behind it. The feed roller is driven by a chain from the shaft on which
the radial arm is centred and this shaft is driven in any convenient manner
preferably from a counter shaft driven from the saw spindle.
The advantage of this arrangement is that the radial arm with the feed roller
can be swung back out of the way when not required and the bench used as an
ordinary hand feed bench.
.
Dated thin 9th day of Jul 1901
H. B. BARLOW,
Agent for Applicant.
COMPLETE SPECIFICATION.
An Improvement in the Feed Motion of Circular Sawing
Machines.
I, THOMAS NIELD ROBINSON, of the firm of Thomas Robinson and Son
Limited, of Railway Works, Rochdale, in the County of Lancaster, Machine
Maker, 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 the feed motion of circular sawing machines and my
improvement consists in mounting a driven feed roller in an arm which radiates
from a centre placed on the side of the circular saw spindle opposite to that of the
fence and behind it. The feed roller is driven by a chain from the shaft on which
the radial arm is centred and this shaft is driven in any convenient manner
preferably from a countershaft driven from the saw spindle.
The advantage of this arrangement is that the radial arm with the feed roller
can be swung back out of the way when not required and the bench used as an
ordinary hand feed bench.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying sheet of drawings reference being had to
the figures and letters marked thereon.
Figure 1 is a side elevation and Fig. 2 a plan of a circular sawing machine fitted
with iny improved radial arm feed motion.
In these views, a designates the frame of the machine, 6 the circular saw, o the
saw spindle, on which are mounted fast and loose pulleys for driving the saw, also
a two speed cone pulley which drives a corresponding cone pulley mounted on a
shaft d, this shaft carries. a four speed cone pulley from which a similar cone
pulley on a shafte is driven, and is the fence; the foregoing parts are all of the
ordinary or any convenient construction arranged and operating in the usual
manner.
According to my improvements I pivot a horizontal arm g on a centre / which

page_text: is fixed on the frame a on the far side of the saw spindle c as shown in and near the
extremity of the horizontal radial arm 9 is fitted a short vertical shaft i upon
which is fixed a feed roller, or two or more feed rollers j; in this instance: a pair of
feed rollers is shown. The vertical shaft i has also fixed upon it a chain wheel k
by which it receives motion from a chain driven by a chain wheel in fixed on a
vertical shaft n, which is supported in the hollow centre h and is driven by worm o
and worm wheel,p from the countershaft e. To the extremity of the radial arm-g
is connected a cord or equivalent 9. whioh passes over guide pulleys and is
weighted at s and so keeps the feed rollers constantly pressing against one side of
the timber the other side of which bears against the fence f. The radial arm g
has an extension g to which is connected a screwed rod u and on this rod u is a
nut and hand wheel e, so that by turning the latter on the rod u the movement of
the radial arm can be regulated within certain limits for saws of different
diameter and further the wheel v, rod and extension g' take the strain of the
cord and weight safter the timber has been fed past the feed rollers j. The
radial arm g is preferably made in two parts one fitted to slide within the other
and connected together by a screw, to so as to be capable of adjustment as
required.
When not required the radial arm feed motion can be readily moved back out of
the way and the machine used as an ordinary hand feed saw bench.
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
1. 1. In a circular sawing machine the combination with the ordinary fence, of a
radial arm carrying a driven feed roller or rollers which arm is pivoted from; a
centre fixed behind the saw and on the side of the saw spindle opposite to the fence.
thus enabling it to be swung back out of the way when not required substantially
as set forth.
2: The combination: and arrangement of parts constituting the radial arm feed
motion substantially as and for the purposes herein described and as illustrated by
the accompanying. drawing.
Dated this 16th day of March 1892.
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant.