Improvements in Candle Moulding Machines.
Year: 1897

page_text: Date of Application, 8th Jan., 1897
Complete Specification Left, 15th Sept., 1897-Accepted, 6th Nov., 1897
PROVIDIONAL
Improvements in Candle Moulding Machines.
We, WILLIAM HARPER DAY, Candle Machine Manufacturer and WILLIAM
MURCH, Engineer, both of the Novelty Works, Ivy Road, Hounslow, in the County
of Middlesex, do hereby declare the nature of this invention to be as follows:-
In candle moulding machines what is known as the " driving board" has
heretofore been made of cast iron or of boiler plate.
When made of cast iron it has necessarily been very heavy in order to obtain
the required strength but in such case as the driving board was necessarily
rigid, great force was frequently required to be applied thereto in order to drive
the candles out of the moulds as they necessarily were all acted upon simul-
taneously. This sometimes resulted in breakage of the "driving board" and
pistons "and in injury to the moulds.
When the driving board has been made of boiler plate it has frequently,
on account of the great resistance it has to overcome, been bent and received
a permanent downward set towards the middle thereof, this is also injurious to
the machine as with the driving board" in such form the candles produced in
the machine would vary in length, those at the ends being shorter than those
towards the middle of the machine.
"
"
"
Now according to our invention we overcome the above difficulties by making
the "driving board resilient whereby, in the event of the candles in the moulds
offering considerable resistance, those at the ends of the machine, which are the
first to cool, will be first liberated from the moulds thereby relieving the pressure
after which the candles towards the middle of the machine can be freed without
submitting the "driving board to such an immense strain as sometimes occurs
when all the candles are freed simultaneously from their moulds whilst after the
candles have all been freed from their moulds the "driving board" will auto-
matically recover its proper or straight form on account of its resiliency. By our
invention we are enabled to make the " driving board" of light construction
thereby rendering the working of the machine much more easy.
"
The improved driving board" may be constructed in any convenient manner,
one way in which we propose to proceed is as follows:-We form the "driving
board" and the "finger plate of steel boiler plate to both of which we preferably
impart a slight curve from end to end, the convex side of the "driving board"
being upward and that of the " finger plate" downward and we bolt these together
so that they bear on each other from end to end leaving spaces between them
for the washers or flanges on the lower ends of the "pistons" as heretofore. In
addition to this we apply to the upper side of the "driving board" an arrange-
ment of springs which will allow the "driving board" to bend downwards towards
the centre when it incurs great resistance but which will restore it to its original
form as soon as the resistance is overcome.
دو
66
In some cases the "pistons are fixed at their lower ends to the driving
board" by nuts on each side of the latter, in such cases the "finger plate" is

page_text: dispensed with; otherwise the "driving board" may be made resilient in the
manner above described.
It will be evident that resilience may be given to the "driving board" in
various other ways without departing from the peculiar features of our invention.
Dated January 8th 1897.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.
Improvements in Candle Moulding Machines.
We, WILLIAM HARPER DAY, Candle Machine Manufacturer and WILLIAM
MURCH, Engineer, both of The Novelty Works, Ivy Road, Hounslow, in the County
of Middlesex, 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:-
In candle moulding machines what is known as the
heretofore been made of cast iron or of boiler plate.
"
driving board has
When made of cast iron it has necessarily been very heavy in order to obtain
the required strength but in such case as the "driving board" was necessarily
rigid, great force was frequently required to be applied thereto in order to drive
the candles out of the moulds as they necessarily were all acted upon simul-
taneously. This sometimes resulted in breakage of the "driving board
"pistons" and in injury to the
..
moulds."
"
and
When the "driving board has been made of boiler plate it has frequently
on account of the great resistance it has to overcome been bent and received'
a permanent downward set towards the middle thereof, this is also injurious to
the machine as with the "driving board" in such form the candles produced in
the machine would vary in length, those at the ends being shorter than those
towards the middle of the machine.
**
"
Now according to our invention we overcome the above difficulties by making
the driving board resilient whereby, in the event of the candles in the moulds
offering considerable resistance, those at the ends of the machine, which are the
first to cool, will be first liberated from the moulds thereby relieving the pressure
after which the candles towards the middle of the machine can be freed without
submitting the "driving board" to such an immense strain as sometimes occurs
when all the candles are freed simultaneously from their moulds whilst after the
candles have all been freed from the moulds the driving board" will auto-
matically recover its proper or straight form on account of its resilience. By our
invention we are enabled to make the "driving board" of light construction
thereby rendering the working of the machine much more easy.
Our invention is illustrated in the accompanying drawings in which Fig. 1 is
a plan of a "driving board" and "finger plates" attached thereto, Fig. 2 is an
edge or side view of the same showing the pistons in position. Fig. 3 is an edge
view of a "driving board" and " finger plate" before they ard secured together
at their ends. Fig. 4 is an edge view of the "driving board" and of an arrange-
ment of central springs before the latter are secured at their ends to the "driving
board" and Fig. 5 is a section drawn to an enlarged scale of part of a
board " and
finger plate" showing a piston held in position thereby.
driving
Fig. 6 is a plan of a "driving board and a pair of "finger plates" showing
slight modification. Fig. 7 is a section of part of a
65
"
$6
a
another modification and Fig. 8 is an edge view of a "driving board" showing a
driving board showing
further modification.

page_text: The improved "driving board" and "finger plates" may be constructed in any
convenient manner;-one way in which we propose to proceed is as follows:--lu
the arrangement shown at Figures 1 to 5 we form the "driving board" a and
the finger plates" 6 of steel plate to both of which we preferably impart a
slight curve from end to end as shown at Fig. 3, the convex side of the "driving
board"
a being upward and that of the "finger plates" b downward and we
bolt these together so that they bear on each other by means of distance pieces a¹
at the centre and both ends leaving spaces between them for the washers or
flanges c on the lower ends of the "pistons". c as heretofore. In addition to this
we apply to the upper side of the "driving board" a an arrangement of springs d
which will allow the driving board" a to bend downwards towards the centre
when it incurs great resistance but which will restore it to its original form as
soon as the resistance is overcome.
At Fig. 6 we have shown the application of three sets of springs done in the
centre of the "driving board" a and one in the centre of each "finger plate" b.
In some cases the pistons care fixed as shown at Fig. 7 at their lower ends to
the "driving board' a by nuts e on each side of the latter, in such cases the
finger plate" is dispensed with; otherwise the driving board" a may be
made resilient in the manner above described.
"
"
At Fig. 8 we represent an edge view of a "driving board" a formed of a number
of steel plates bolted together in which case the bolt holes in the upper plates,
except those at the centre thereof, must be somewhat longer or larger than those
in the lower plates to permit of the short sliding motion of the upper plates upon
the lower ones at the times when the "driving board assumes a somewhat curved
form on account of its encountering a greater resistance at the centre than at the
ends.
«
This form of "driving board" may be fitted with finger plates" and have
the "pistons" connected thereto as in the arrangements described with reference
to Figures 1 to 6 or the "finger plates" may be dispensed with in which case the
'pistons may be connected to the driving board as shown and described with
respect to Fig. 7.
"
It will be evident that resilience may be given to the "driving board" in
various other ways without departing from the peculiar features of our invention.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what we
claim is:-
1. The improvements in candle moulding machines substantially as herein set
forth.
2. The improvement of candle moulding machines by providing them with a
resilient "driving board" substantially as herein set forth and for the purpose
stated.
3. The improvement of candle moulding machines by providing them with
combined resilient "driving board" and "finger plates" substantially as herein
set forth and for the purpose stated.
Dated September 15 1897.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.