Certain Improvements in Machines for Finishing, Straightening, and Polishing Metal Tubes, Bars, and Rods, and for Removing Steel and other Metal Tubes from their Mandrils.
Year: 1895

page_text: Date of Application, 14th Sept., 1895
Complete Specification Left, 15th June, 1896-Accepted, 18th July, 1896
PROVISIONAL SPECIFICATION.
Certain Improvements in Machines for Finishing, Straightening, and
Polishing Metal Tubes, Bars, and Rods, and for Removing Steel
and other Metal Tubes from their Mandrils.
I, GEORGE PLATT, of the Firm of Samuel Platt, of Kings Hill Foundry,
Wednesbury, in the County of Stafford, Engineer, do hereby declare the nature of
this invention to be as follows:-
:-
This invention has reference to what are known as finishing straightening and
polishing machines which are used for finishing straightening and polishing round
metal tubes bars and rods and for removing steel and other metal tubes from the
mandrils on which they have been drawn. In machines of this kind to which my
invention relates there are two rolls revolving in the same direction and set with
their axes parallel with each other when viewed in plan but slightly inclined to the
horizontal the axis of one roll being inclined in one direction and the axis of the
other roll inclined in the opposite direction, so that when the tube rod mandril or
the like is placed between the rolls the latter cause it to revolve and simultaneously
to travel endwise between the rolls, entering between the rolls at one end thereof
and leaving at the other ends of the same. In a machine of this kind a guide bar
has to be employed arranged longitudinally between the rolls and slightly below
the centre line of the same so as to keep the revolving tube rod, mandril or the like
in position between the rolls. There is a certain amount of friction and scratching
caused by the rubbing of the revolving tube, rod, mandril or the like on and
against the guide bar which in some cases damages the tube, rod, mandril or the
like. This defect it is the object of my invention to overcome.
According to this invention I provide on the upper part of the guide bar one
two three or more small rollers carried by bearings formed on or fixed to the guide
bar and arranged with their axes somewhere about parallel therewith so that the
tube rod mandril or the like whilst being operated on by the rolls will revolve and
travel on these rollers and cause the rollers to revolve and thus there will be no
scratching or grinding of the guide bar on the tube, rod, mandril or the like as the
same revolves and passes through the rolls.
Dated this 13th day of September 1895.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Certain Improvements in Machines for Finishing, Straightening, and
Polishing Metal Tubes, Bars, and Rods, and for Removing Steel
and other Metal Tubes from their Mandrils.
I, GEORGE PLATT, of the Firm of Samuel Platt, of King's Hill Foundry,
Wednesbury, in the County of Stafford, 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 :-
This invention has reference to what are known as finishing straightening and
Prion 227

page_text: polishing machines which are used for finishing straightening and polishing round
metal tubes bars and rods and for removing steel and other metal tubes from the
mandrils on which they have been drawn. In machines of this kind to which my
invention relates there are two rolls revolving in the same direction and set with
their axes parallel with each other when viewed in plan but slightly inclined to
the horizontal, the axis of one roll being inclined in one direction and the axis of
the other roll inclined in the opposite direction, so that when the tube rod mandril
or the like is placed between the rolls the latter cause it to revolve and simul-
taneously to travel end wise between the rolls entering between the rolls at one end
thereof and leaving at the other ends of the same. In a machine of this kind a
guide bar has to be employed arranged longitudinally between the rolls and
slightly below the centre line of the same so as to keep the revolving tube rod
mandril or the like in position between the rolls. There is a certain amount of
friction and scratching caused by the rubbing of the revolving tube, rod, mandril
or the like on and against the guide bar which in some cases damages the tube, rod,
mandril or the like.
This defect I overcome by my invention which I will describe by referring to
the accompanying drawing on which
Fig. 1 is a plan of a pair of the rolls and the guide bar of one of the said
machines with my invention applied thereto;
Fig. 2 is an elevation of the said guide bar and one of the rolls;
Fig. 3 is a cross section of both rolls and guide bar ;
Fig. 4 is a plan and Fig. 5 is an elevation of the said guide bar separately
shewing my invention applied thereto.
The same letters of reference indicate the same parts in all the figures of the
drawing.
A B are the two rolls of the machine revolving in the same direction as indicated
by the arrows in Figs. 1 and 3 and set with their axes parallel with each other
when viewed in the plan Fig. 1, but slightly inclined to the horizontal as shewn in
Fig. 2, the axis a¹ of one roll being inclined in one direction and the axis b' of the
other roll B being inclined in the opposite direction. C is the guide bar placed
between the rolls A B and slightly below the centre line of the same and on which
in the ordinary machines the rod tube mandril or the like rests as it rolls endwisc
between the rolls, the said rod tube mandril or the like entering the machine on
the left hand side (see Fig. 1) and passing out towards the right hand side of the
machine as indicated by the arrows X X in Fig. 2.
According to this invention I provide on the upper part of the guide bar C one
two three or more small rollers marked respectively D' D D³ carried by end
bearings e formed with or fixed to the guide bar C these rollers D' D* D* being
arranged with their axes somewhere about parallel with the guide bar, so that the
tube rod mandril or the like whilst being operated upon by the rolls A B will
revolve and travel on these rollers D¹ D' D' and cause these rollers to revolve and
thus there will be no scratching or grinding of the guide bar C on the tube rod
mandril or the like as the same revolves and passes through the rolls A B.
It is to be understood that the rolls A B form no part of my invention and that
these rolls may be made of various shapes as is well known.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
In a machine of the kiud herein referred to for finishing straightening and
polishing metal tubes bars and rods and for removing steel and other metal tubes
from their mandrils, the combination with the two rolls which impart the combined
rotary and end wise movement to the rod tube mandril or the like, of a guide bar
arranged between the rolls and provided with one or more small rollers on its
upper part for the rod tube mandril or the like to revolve upon to prevent the

page_text: scratching or grinding of the guide bar on the tube rod mandril or the like, all
substantially as hereinbefore described with reference to the accompanying
drawing.
Dated this 11th day of June 1896.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.