Improvements in and relating to the Turning and Feeding Mechanism used in the Step-by-step Process of Rolling Tubular Blanks.
Year: 1897

page_text: Date of Application, 9th June, 1897
Complete Specification Left, 10th Aug., 1897--Accepted, 25th Sept.,
1897
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Turning and Feeding
Mechanism used in the Step-by-step Process of Rolling Tubular
Blanks.
I, JOHN WOTHERSPOON, of Blairston, Bothwell, in the County of Lanark,
Engineer, do hereby declare the nature of my Invention to be as follows:-
This Invention has reference to improvements in and relating to automatic
mechanism or appliances for giving the tubular blank the requisite amount of
forward feed and a quarter or like turning movement at each revolution of the
gap rolls in the step-by-step process of rolling.
The tubular blank with a mandrel inside is fed between a pair of the well
known gapped rolls. The sten-by-step forward feed is given by
a chain or rope
attached to a cylinder and actuated by a worm wheel or other gearing. A cylinder
carried on a slide and having a piston rod to which the mandrel is attached gives
the necessary reciprocating motion to the tube blank in unison with each revolu-
tion of the gapped rolls. The worm, wheel and drum over which the feeding rope
is passed is operated to give either an intermittent or a continuous feed.
By my present improvements the blank is given a quarter turn round at each
forward feed by mounting by a feather and groove a ratchet wheel on the rear end
of the piston rod, and this wheel is actuated by a pawl mounted an a lever which
receives motion from a crank. This crank is mounted on a spur wheel spindle
which is in turn actuated by a wheel mounted on the shaft from which the motion
is communicated to actuate the valve of the cylinder which gives the forward
motion of the blank. By this means the forward and turning movements of blank
are performed automatically and in time unison.
Instead of wheel gearing, a steam or other fluid pressure cylinder may be sub-
stituted mounted at right angles to the cylinder which gives the forward motion
to the blank and have the pawl lever mounted on the end of piston rod to give the
turning movement to ratchet wheel and blank; and the valves of both of these
cylinders would be operated through cranks and connecting rods or other gearing
from the same shaft so as to give the forward and turning movements to blank in
time unison.
.
00
3
. T
1007
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.

page_text: Improvements in and relating to the Turning and Feeding
Mechanism used in the Step-by-step Process of Rolling Tubular
Blanks.
I, JOHN WOTHERSPOON, of Blairston, Bothwell, in the County of Lanark,
Engineer, do hereby declare the nature of my 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 has reference to improvements in and relating to automatic
mechanism or appliances for giving the tubular blank the requisite amount of
forward feed and a quarter or like turning movement at each revolution of the
gap rolls in the step-by-step process of rolling.
And in order that my said invention and the manner of carrying same into
practice may be properly understood, I have hereunto appended an explanatory
sheet of drawings in which Figure 1 is an elevation and Figure 2 a corresponding
plan view illustrating my improvements as applied to the turning and feeding
mechanism used in the step-by-step process of rolling tubular blanks.
Referring to said drawings:-
The tubular blank a with a mandrel a¹ inside is fed between a pair of the well
known gapped rolls A A¹. The step-by-step forward feed is given by a chain or
rope h passing round a pulley h¹ and attached to a cylinder Band actuated by a
worm wheel 3 and worm * or other gearing. The cylinder B is carried on a
slide and has a piston rod B¹ to which the mandrel a¹ is attached so as to give the
necessary reciprocating motion to the tube blank a in unison with each revolution
of the gapped rolls A A¹. The worm wheel h³ and drum h2 over which the feeding
rope is passed is operated to give either an intermittent or a continuous feed.
The blank a is given a quarter turn round at each forward feed by mounting by
a feather and groove i a ratchet wheel 21 on the rear end B3 of the piston rod B¹
and this wheel ¹ is actuated by a pawl mounted on a lever 23 which receives
motion from a crank it. This crank is mounted on a spur wheel spindle 15 the
wheel of which is in turn actuated by a wheel j mounted on the shaft 11 from
which the motion is communicated through the eccentric & and connecting rod kl
to actuate the valve of the cylinder B which gives the forward motion of the
blank a. By this means the forward and turning movements of blank a are
performed automatically and in time unison.
Instead of wheel gearing, an ordinary fluid pressure cylinder may be substituted
mounted at right angles to the cylinder B which gives the forward motion to the
blank and have the pawl lever mounted on the end of piston rod to give the
turning movement to ratchet wheel ¹ and blank; and the valves of both of these
cylinders would be operated through cranks and connecting rods or other gearing
from the same shaft so as to give the forward and turning movements to blank in
time unison.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare' that what I 4
claim is:-.
First. In rolling tubular blanks, the giving of the turning movement to the
blank at each forward feed by the combination of ratchet wheel, piston rod with
groove and feather, and pawl lever mechanism, substantially as set forth.
Second. In rolling tubular blanks, the combination of forward and turning 4
movements to blank automatically and in time unison, substantially as set forth.

page_text: Third. In rolling tubular blanks, the giving of the step-by-step forward feed
by means of a chain or rope attached to a cylinder which receives a sliding
movement from worm or other gear, substantially as set forth.
Deted the 0th August 1807
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.