Improvements in and relating to Rolling and Drawing Mills.
Year: 1888

page_text: Date of Application, 9th Oct., 1888
Complete Specification Left, 6th July, 1889-Accepted, 7th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in and relating to Rolling and Drawing Mills.
We, CHARLES MONTAGUE LINLEY, and JOHN BIGGS, of 29 Clerkenwell Road, in the
City of London in the County of Middlesex, Cycle Manufacturers, do hereby declare
the nature of this invention to be as follows:-
Our invention consists of an improved form of rolling or drawing mill for tapering
bars or tubes, of oval or other section.
We use two rolls mounted in any convenient frame, and adapted to be driven in
the manner generally adopted in machines of this type.
The one roll-as is usual-is mounted in fixed bearings, and the other is mounted
in bearings adapted to slide in the frame, to allow the rolls to be separated to permit
of the introduction between the rolls of the bar or tube to be tapered.
So far the machine presents no novel features.
In the periphery of each roll is cut a circumferential groove of tapering section, the
depth of each groove being half the thickness of the bar or tube to be tapered, so that
the peripheries of the rolls always touch each other, and so prevent "spreading" of
the bar or tube while it is being tapered.
When the article to be tapered is of such a length that the size of the rolls would
be inconveniently large, we cut the taper grooves spirally on the rolls, that on one
roll being cut right-handed, and that on the other left-handed. The rolls are so geared
together that they rotate at equal velocities, and so that the areas of the two grooves
are always constant at the point of contact of the peripheries of the rolls.
Dated this 9th day of October 1888
ROBT. ED. PHILLIPS, M.I.M.E.,
sulting Engineer & Patent Agent, Royal Courts Chambers,
70, 71, & 72, Chancery Lane, London, W.C.,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to Rolling and Drawing Mills.
We, CHARLES MONTAGUE LINLEY, and JOHN BIGGS, of 29 Clerkenwell Road, in the
City of London, in the County of Middlesex, Cycle Manufacturers, do hereby declare
the nature of this invention and in what manner the same is to be performed to
be particularly described and claimed in and by the following statement —
Our invention relates to an improved form of rolling or drawing mill, and it has for
its object, tapering bars or tubes of oval or other section.
We attain this object in the manner illustrated in the accompanying drawings, in
which Figure 1. Sheet No. 1. is a view in front elevation of our improved rolling or
drawing mill, and Figure 2. Sheet No. 2. is a view in side elevation thereof. Figure 3.
Sheet No. 3. is a view in front elevation, and Figure 4. Sheet No. 3. is a view in side
elevation, of a modification of our improved mill.
Throughout the several views similar parts are marked with like letters of reference.
Referring to Figures 1. and 2. Sheet No. 1. and 2. respectively. The rolls A and A¹
are mounted in suitable bearings b b etc. Sitting in a suitable housing or frame B. The
bearings for the bottom roll A¹ are fixtures, but those for the top roll A are
capable of adjustment in the housing or frame in the vertical plane, by the mechanism
illustrated, or by any other suitable or equivalent device.
In the periphery of each of the rolls A and A¹ is cut a circumferential groove a
and a¹ of tapering section, the depth of each groove being half the desired thickness of
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page_text: the bar or tube to be tapered, so that in operation the peripheries of the rolls always
touch each other and so prevent spreading of the bar or tube. The rolls are geared
together by means of suitable gear wheels C. C. and the lower roll receives either an
intermittent or continuous motion from a suitable countershaft, so that the rolls always
rotate at the same velocity and so that the areas of the two grooves are always constant
with respect the one to the other at the point of contact of the peripheries of the rolls.
If desired two or more rolls may be formed or fixed on one spindle as illustrated,
either for the purpose of giving a greater taper than one roll can effect, or for the
purpose of tapering a bar or tube of a different section.
When the article to be tapered is of such a section that the size of the rolls
would be inconveniently large, or when it is not convenient to have several rolls
side by side, we cut or form the taper grooves a and a spirally in the rolls as
illustrated by Figures 3 and 4. Sheet No. 3. of the accompanying drawings.
In this case the groove in the one roll is cut or formed right-handed and that in the
other left-handed.
We sometimes adapt the rolls A and A¹ not only to taper the bars or tubes, but
also to first reduce the bars or tubes to the desired section as illustrated by Figure 3.
Sheet No. 3, though this may be done in a separate mill.
The bar or tube to be tapered is presented to the rolls A and A¹at the point where
the groove a and a¹ are of the greatest area, such area being equal to the section of
the oval bar or tube. The bar or tube is then pushed between the revolving rolls
until it is sufficiently far through to enable it to be seized on the other side when it is
pulled through the rolls, moving in the machine illustrated by Figures 3. and 4
Sheet No. 3 from the right to the left of the rolls.
•
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is ;-
The improved rolling or drawing mill for tapering bars or tubes, constructed,
arranged, and operating, as and for the purpose set forth.
Dated this 9th day of July 1889
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent, Royal Courts Chambers,
70, 71, & 72, Chancery Lane, London, W.C.,
Agent for the Applicants.