Improvements in Apparatus Used in the Manufacture of Pneumatic Tyres.
Year: 1897

page_text: Date of Application, 9th Mar., 1897-Accepted, 25th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in Apparatus Used in the Manufacture of Pneumatic
Tyres.
I, FREDERICK WILLIAM HUESTIS, residing on West Rutland Square, in the
City of Boston, County of Suffolk, State of Massachusetts, United States of
America, Manufacturer, 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 relates to mechanism for the production of thread tires, especially
that class known as pneumatic tires and employed on the wheels of bicycles.
My invention is embodied in apparatus by which a thread tire is produced in
contradistinction to an ordinary fabric tire. That is, the element or means by
which the confined air is prevented from bursting or distorting the rubber, or
rubber composition forming part of the tire consists of a series of threads
previously rubbered, wrapped or coiled between the two tubes composing the tire,
while in the ordinary tire a frictioned woven fabric (or a woven fabric surfaced
with uncured rubber) is employed to perform a similar duty.
My improvements as embodied in the apparatus herein illustrated consist of the
following instrumentalities duly assembled and cooperating; a mandrel for con-
tinuous rotation on which the tire is to be produced, a travelling platform or
carriage for to and fro movements. A pivotal bath holder upon the carriage, a
drum to contain threads in the form of a beam, together with mechanism by
which the table is given a reciprocal movement, while the angle at which the
threads are caused to be wrapped about the mandrel may be changed for each
reversal in the reciprocation of the table.
The drawings illustrate in Fig. 1 a plan of tire winding apparatus embodying
my invention. Fig. 2 is a side elevation. Fig. 3 is an end elevation in direction
of arrow 1. Fig. 4 is a similar view of the opposite end in direction of arrow 2.
Fig. 5 is a vertical section lengthwise of the swinging vat.
My invention is, as before premised, especially adapted to the manufacture of
thread tires in which a winding or wrapping of threads previously coated with
rubber is interposed between two rubber tubes, an inner air tube and an outer
tube which serves as a cover. In the production of tires of this class, I propose
to perform all the necessary steps in a few simple successive acts which comprise
the unwinding of the threads from a containing drum, thence passing them
through a vat or bath supplied with rubber or a rubber compound and finally
winding said threads about a tube properly mounted upon a continuously
revolving mandrel.
In the construction and arrangement of mechanism necessary to the proper
performance of the various steps hereinbefore alluded to, I preferably proceed as
follows: a suitable bed-plate or standard 2, after the style of a late bed is pro-
vided, longitudinally on which is mounted in end bearings or centers 3 31 a
mandrel 4, adapted to have continuous rotation in one direction only by means
of the toothed gear 5, pinion 6 and pulley 7 from some prime motor, It is

page_text: the threads through the liquid contents of the receptacle, and mechanism to
permit swinging of the receptacle to change the direction in which the threads
are wrapped about the mandrel, substantially as set forth.
3. In apparatus for winding tires, the combination with a mandrel suitably
mounted, and adapted to rotate in one direction, a screw-threaded shaft in
parallelism with the mandrel, means for reversing the rotation of said shaft at
predetermined intervals, a table inter-connected with said shaft to traverse length-
wise of the mandrel, a vat or bath-holder pivotally secured to the table, a thread-
holder mounted upon the bath, and means to compel the threads to enter the
liquid contents of the vat, substantially as set forth.
4. In apparatus for winding rubber tubes for tires, a revoluble mandrel, a
table transversely of but movable lengthwise of said mandrel, a screw shaft to
engage the table, a gear at the rod of said shaft, combined with a pivotal plate,
two gears carried upon said plate, means for rocking the plate to change the
traverses of the table, and a movable vat to swing upon the table and thus
reverse the direction of the threads passing about the mandrel, substantially as
stated.
5. In combination with a rotary mandrel, a movable table, mechanism for
reciprocating the same, and a swinging liquid-tight vat upon said table, a
revoluble thread holder carried on the vat, a deflector to compel the threads to
traverse the liquid in the vat, and combs on either side of the deflector, sub-
stantially as described.
Dated this Twenty-fourth day of February 1897.