An Improved Self-acting Safety Wax Heater.
Year: 1894

page_text: Date of Application, 29th Aug., 1894
Complete Specification Left, 28th Jan., 1895-Accepted, 9th Mar., 1895
PROVISIONAL SPECIFICATION.
An Improved Self-acting Safety Wax Heater.
We, HENRY SPENCER GOODMAN 32 Uppingham Street, Northampton,
Machinist and HERBERT JAMES NEWMAN, 46 Monk's Pond Street Northampton
Machinist, do hereby declare the nature of this invention to be as follows:-
An improved self acting safety wax heater, to be used in connection with the
machines used by manufacturers for attaching the soles to boots shoes &c.
In carrying out our invention we proceed as follows,-The wax has to be melted
and kept in a liquid state, this is done in a pot which is placed into a tank of water.
the said water being kept continually heated by means of gas or oil to a sufficient
temperature to effect this purpose.
We provide a metal float of copper or any more suitable material, which is
placed inside the water tank, or in a water tight compartment attached to the
water tank the said metal float rising or falling, according to the amount of water in
the tank, and in the event of the water in the tank getting exhausted by the
heating apparatus attached thereto, the weight of the aforesaid float acting upon a
lever attachment which is connected with the stop cock in the gas or oil supply
pipe which controls the amount of heat given out by the burner; effectually shuts
the same off, and thus prevents the wax boiling over.
Dated 28th day of August 1894.
HENRY SPENCER GOODMAN.
HERBERT JAMES NEWMAN.
We, HENRY SPENCER GOODMAN of 32 Uppingham Street, Northampton,
and HERBERT JAMES NEWMAN of 46 Monk Pond Street, Northampton, in the
County of Northampton, Machinists, do hereby declare the nature of this inven-
tion, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
An improved self acting safety wax heater to be used in connection with the
machine used by manufacturers for attaching the soles to boots and shoes, etc.
In carrying out our invention we proceed as follows. We provide a metal float
of copper or any more suitable material, which is placed inside a water tank, or in
a watertight compartment attached to the water tank, the said metal float rising or
falling according to the amount of water in the tank. And in the event of the
water in the tank getting exhausted by the heating apparatus thereto, the weight
of the aforesaid float acting upon a lever attachment connected with the stop cock
in the gas supply pipe shuts the same off, thus preventing the wax boiling over
which has been the cause of many fires.
We also provide a similar float in a similar way to prevent the water in the tark
boiling over.
In wax heaters the vessel which contains the wax, melted or to be melted, is
placed in a tank or boiler, the water in which surrounds this vessel, and as it

page_text: Fig. 5 is a plan of the cover for the float chambers.
Fig. 6 is a side view of same.
Fig. 7 is a plan of the float.
A is the tank, in the top of the part B of which fits a tray or vessel for
containing the molten wax. Formed integrally with or rigidly attached to one
end of this tank, are the two compartments, C the left hand, and D the right.
The vessel for containing the molten wax does not cover the compartments C and D,
these two having a cover E, which is retained in its place by the piece e which
depends downwards into the right hand compartment D. The part B of the tank
opens into the left hand compartment C through an opening or passage e situate
close to the bottom of the tank; but the opening or passage d through which the
part B communicates with the right hand compartment D is only a short distance
below the top of the tank. Screwed, or otherwise rigidly attached to and
projecting upward from the bottom of each of the compartments C and D is a
tube (designated ƒ and g respectively), which is continued upwards far enough
to ensure its reaching above the highest water level. Floating in the com-
partment C is a float F and in the compartment D a float G, and each
of these floats is attached to and depends from one of two tubes f¹ and g¹
which are of sufficient internal diameter to slide freely up and down outside
the tubes and g without touching them. Fixed across the top of each of
the tubes f¹ and g², is a pin or equivalent cover, (f2 and 9²), and fixed
to and depending from these is one of two wires or rods, f³ and g³, each of
which is of sufficiently small diameter to pass freely downwards through one
of the fixed tubes and 9, and out of the tank so as to be attached to one
of the ends of the lever H which operates the gas supply cock. At the lower
end of the wire or rod 3, which is threaded, a small nut his screwed upon it, and
this nut is fixed to a piece ¹ which is pivotally connected to the left arm of the
lever H. The lower threaded end of the wire or rod 9 has two nuts h* and h³
screwed upon it, and these are adjusted so far apart, as to leave the pivoted
¯piece /* a certain extent of free movement; and conversely, the rod. or wire g³ is

page_text: free to rise or fall a certain distance without moving the pivot piece h*, and the
lever H. and o* are holes or tubes for allowing the heated air to escape from
the interior of the floats, when it expands. I is the gas burner, i the gas supply
pipe, and K a water tap by means of which the compartment D may be emptied
of its contents.
A
The operation is as follows:-The tank and compartments being empty, water
is poured into the part B of the tank, and passes through the passage or opening c
into the compartment C, where on rising it lifts the float F with its attached
tube f, and wire or rod f³, and thereby (through the movement of the gas-
lever H), turns on the gas. This being lit and the water heated, the wax is melted
as desired, but should too much heat be applied the water boils, and boiling over
(through the opening d) into the compartment D, lifts the float G, and its
attached tube g, and rod or wire g. By means of the pivot piece h, and lever H,
this turns off the gas supply, either wholly or partially, and thus prevents the
water boiling over and out of the tank. On the other hand, should the water
contained in the part B boil away, the water in the compartment C sinks, and
with it the float F, tube f¹, and rod or wire f³, which being connected with the
lever H gradually shuts off the gas supply, and this is continued until more water
is added, or until the supply of gas is entirely stopped. Absolute security is thus
provided, on the one hand against the water boiling over, and on the other against
the wax boiling over and taking fire.
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 :-
1. In a wax heater, the two compartments arranged, and having floats operating
substantially as described and shewn.
2. In a wax heater, causing the rise or fall of the water to automatically
regulate the supply of gas, substantially as described and shewn.
3. The application to a wax heater of a gas governor, constructed and
operating in the manner and for the purpose, substantially as shewn and
described.
4. In a wax heater, the combination with the wax vessel, and the boiler or tank
of two compartments, with their floats, tubes, wires or rods, and the gas cock, and
lever, substantially as shewn and described.
Dated this 26th day of January 1895.
WILLIAM J. MUNDEN,
106, Priory Park Road, Kilburn, Agent for the Applicants.