Improvements in and relating to Type-casting Machines.
Year: 1898

page_text: Date of Application, 12th Oct.,
2000
TODO
Complete Specification Left. 14th Aug.. 1899-Accepted. 7th Oct.. 1899
Date of Application, 21 OL, 1000
Complete Specification Left. 14th Aug.. 1899-Accepted. 7th Oct.. 1899
PROVISIONAL SPECIFICATION.
Improvements in and relating to Type-casting Machines.
I, OLIVER TITCHENER, of 3, Wilmington Street, Clerkenwell, in the County
of London, Typefounders' Engineer, do hereby declare the nature of this inven-
tion to be as follows:
My invention relates to type-casting machines.
When casting quods, quotations and large type in such machines it has hitherto
been necessary to work the machines by hand power in order to give the required
dwell to allow the large body of metal in the mould to set and cool.
The object of my invention is to provide mechanical means for giving such
dwell to the mould in order that the machines may be driven by power when
casting quods, quotations and large type, and for this purpose I arrange upon the
main shaft gear wheels adapted to engage either with a mutilated gear wheel or
with an ordinary gear wheel according to whether the machine is to be driven
with an intermittent or a continuous motion.
In carrying out my invention in addition to the main shaft of the machine
which may be of ordinary construction, I employ two shafts which I mount in
suitable bearings on the frame of the machine the first additional shaft carrying
the pulleys for receiving the driving straps; a spur wheel is also provided on
this shaft, which wheel is permanently in engagement with a similar wheel on
the second additional shaft. Two spur wheels are also fixed on the main shaft;
a spur wheel and a mutilated gear wheel fixed thereto are adapted to slide along
and turn with the second additional shaft so that two of the spur wheels can be
placed in gear when a continuous motion is required or the other of the spur
wheels and the mutilated wheel when a dwell is required to be given to the
main shaft; a removable collar is designed to be placed on the second additional
shaft at the right or left side of the mutilated wheel and spur wheel thereon in
order to fix them in either position to which they may be shifted on the said
shaft.
In order to prevent the toothed portion of the mutilated wheel from striking
the teeth of the temporarily motionless wheel on the main shaft too abruptly,
and the shock of which might cause a rupture, I fix upon the face of the mutilated
wheel a plate provided with a cam shaped edge and so placed on the wheel some-
what in advance of the teeth that the said edge meets a roller on the face of the
said motionless wheel and sets. the said wheel in rotation very slowly at first and
gradually faster until the teeth of the two wheels come into gear.
To prevent the possibility of the main shaft moving during the time that the
mutilated wheel and spur wheel are out of gear I fix a notched wheel on the main
shaft and a spring on a bracket of the machine the said spring having a tooth
designed to enter the notch in the wheel and hold the shaft sufficiently to prevent
it rotating.

page_text: Improvements in and relating to Type-casting Machines.
I, OLIVER TITCHENER, of 3, Wilmington Street, Clerkenwell, in the County
of London, Typefounders' Engineer, 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:—
My invention relates to type-casting machines.
When casting quods, quotations and large type in such machines it has hitherto
been necessary to work the machines by hand power in order to give the required
dwell to allow the large body of metal in the mould to set and cool.
The object of my invention is to provide mechanical means for giving such
dwell to the mould in order that the machines may be driven by power when
casting quods, quotations and large type, and for this purpose I arrange upon the
main shaft gear wheels adapted to engage either with a mutilated gear wheel or
with an ordinary gear wheel according to whether the machine is to be driven
with an intermittent or a continuous motion.
In the accompanying drawing,-
Figure 1 is a front elevation of part of a type-casting machine shewing my
improvements applied thereto.
Figure 2 is a sectional side elevation, the section being taken on the line 2-2
of Figure 1, and
Figure 3 is a detached face view of two of the gear wheels hereinafter described.
a is the main shaft of the machine which may be of ordinary construction and
therefore requires no further description or illustration.
b and c are two additional shafts which I mount in suitable bearings d, d and e, e
respectively on the frame of the machine the shaft 6 carrying the pulleys a' for
receiving the driving straps; f is a spur wheel on the shaft b, and which is per-
manently in engagement with a similar wheel g on the shaft e.
h and i are spur
wheels fixed on the shaft a; j is a spur wheel and a mutilated gear wheel fixed
thereto, the said wheels being adapted to slide along and turn with the shaft c
so that the wheels h and can be placed in gear when a continuous motion is
required or the wheels i and when a dwell is required to be driven to the
shaft a; is a removable collar designed to be placed on the shaft c at the right
or left side of the wheels k and j in order to fix them in either position to which
they may be shifted on the shaft c.
In order to prevent the toothed portion of the mutilated wheel k from striking
the teeth of the motionless wheel i too abruptly, and the shock of which might
cause a rupture, I fix upon the face of the wheel k a plate m (Figure 3) provided
with a cam shaped edge and so placed on the wheel somewhat in advance of the
teeth that the said edge meets a roller n on the face of the wheel i and sets the
said wheel in rotation very slowly at first and gradually faster until the teeth of
the two wheels come into gear.
To prevent the possibility of the shaft a moving during the time that the
wheels and are out of gear I fix a notched wheel o on the shaft a, and a
spring on the bracket of the machine the said spring having a tooth r
designed to enter the notch in the wheel o and hold the shaft a sufficiently to
prevent it rotating.
s is a clutch on the shaft b for throwing the driving pulleys a¹ out of engage-
ment and stopping the machine when required, the said clutch being operated
by means of the hand levert and fork u.
vis a handle for working the machine by hand if required.

page_text: 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:
1. A type-casting machine provided with mechanism for giving the mould a
sufficient stay or dwell to allow of quods, quotations, and large type being cast
without having to work the machine by hand, substantially as hereinbefore
described.
2. The combination with a type-casting machine of gear wheels arranged upon
the main shaft and adapted to engage either with a mutilated gear wheel or with
an ordinary gear wheel according to whether the machine is to be driven with
an intermittent or a continuous motion, substantially as hereinbefore described.
3. The combination with a type-casting machine of the mechanism for giving
the mould a stay or dwell, substantially as herein before described and illustrated.
Dated the 14th day of August 1899.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.