Improvements relating to Vulcanizers.
Year: 1897

page_text: Improvements relating to Vulcanizers.
We, THOMAS FERDINAND WALKER, and THOMAS SYDNEY WALKER, trading as
Thomas Walker and Son, of Oxford Street, in the City of Birmingham, Manu-
facturers, do hereby declare the nature of this invention to be as follows:-
This Invention relates to an improvement in the class of vulcanising apparatus
in which the burner is attached directly to the gas regulating chamber, wherein
there is a fixed aperture through which the gas is admitted to the burner, the object
of the invention being to enable the operator to alter the point at which the
temperature will be automatically regulated.
Within the gas chamber we fix an ordinary curved Bourdon tube as used in
steam gauges,
the open
end of the said tube communicating with the interior of
the vulcaniser boiler through steam piping. By means of the closed free end of
the tube, the position of which varies with the steam pressure in the boiler, we
actuate a trip lever for controlling the gas admission aperture and we connect
such lever with the said free end of the Bourdon Tube by means of a suitable link
with an intermediate lever pivotted upon an eccentric rod or link connected to a
disc or cam formed with or attached to a pin or spindle which passes through a
suitable stuffing box to the exterior of the gas chamber. On the outer end of such
pin or spindle we attach an index lever with a pointed extremity by which it may
be readily set to any required pressure indicated upon a suitably curved plate or
bracket.
On moving the index lever in the one direction the trip lever is withdrawn from
the gas admission aperture, but on movement in the opposite direction the trip
lever is caused to approach the aperture and it can thus be made to close the said
aperture with a greater or smaller movement of the Bourdon Tube under the
action of the pressure within the vulcanizer.
To prevent any jarring or straining of the self regulating mechanism we provide
a spring contact or closing piece upon the free end of the trip lever which permits
of a slight movement of the body of the lever when the aperture is closed.
We sometimes provide for the adjustment of the self-regulating mechanism to
the required degree of temperature by the employment of a slotted trip lever in
conjunction with a connecting link arranged to permit of lateral movement in
such a manner as to alter the length of leverage actuating the said trip lever so as
to necessitate a greater or less amount of movement of the free end of the Bourdon
Tube to cause the trip lever to close the gas aperture. We make other modifica-
tions in the details of the mechanism as may be necessary to the most convenient
application of our invention.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
i
Improvements relating to Vulcanizers.c
---
We, THOMAS FERDINAND WALKER, and THOMAS SYDNEY WALKER, trading as
Thomas Walker and Son, of Oxford Street, in the City of Birmingham, Manu-
facturers, 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 an improvement in the class of vulcanizing apparatus
in which the burner is attached directly to the gas regulating chamber, wherein
there is a fixed aperture through which the gas is admitted to the burner, the
object of the invention being to enable the operator to alter the point at which the
temperature will be automatically regulated.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to.-
Figure 1 is an inverted plan and Figure 2 a sectional elevation of a vulcanizer
regulator constructed and arranged in accordance with our invention.
Within the gas chamber A we fix an ordinary curved Bourdon tube A¹ as used
in steam gauges, the open end of the said tube communicating with the interior
of the vulcanizer boiler through steam piping connected at A³. Through the
pipe A3 which is attached in any ordinary manner to the gas main, the gas passes
freely into the chamber A and is admitted to the atmospheric burner B₁ through
the regulating aperture C. By means of the closed free end a of the tube, the
position of which varies with the steam pressure in the boiler, we actuate a trip
lever or valve such as B for controlling the gas admission aperture C and we
connect the lever B with the free end a of the Bourdon tube A¹ by means of a
suitable link as D with an intermediate lever E pivotted upon a rod or link F
connected eccentrically to a disc or cam G formed with or attached to a pin or
spindle which passes through a suitable stuffing box H to the exterior of the gas
chamber. On the outer end of such pin or spindle we attach an index lever J
with a pointed extremity by which it may be readily set to any required pressure
indicated upon a suitably curved plate or bracket K.
On moving the index lever J in the one direction the trip lever B is withdrawa
from the gas admission aperture C, but on movement in the opposite direction
the trip lever B is caused to approach the aperture C and it can thus be made to
close the said aperture with a greater or smaller movement of the Bourdon tube A¹
under the action of the pressure within the vulcanizer.
To prevent any jarring or straining of the self regulating mechanism we some-.
times provide a spring contact or closing piece upon the free end of the trip
lever B which permits of a slight movement of the body of the lever when the
aperture is closed.
We sometimes provide for the adjustment of the self regulating mechanism to
the required degree of temperature by the employment of a slotted trip lever às B
in conjunction with a connecting link which is arranged to permit of lateral
movement in such a manner as to alter the length of leverage actuating the said
trip lever, so as to necessitate a greater or less amount of movement of the free
end of the Bourdon tube to cause the trip lever to close the gas aperture. We also
make other modifications in the details of the mechanism as may be necessary to
the most convenient application of our invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. A vulcanizer regulator.constructed and arranged substantially as and for the
nurnaces described

page_text: 2. In vulcanizer regulators the combination of a Bourdon tube and a trip lever
or valve with adjustable linkage or connections substantially as described and as
illustrated.
1007
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.