Improvements in or applicable to the Wharfdale and other Letterpress Printing Machines.
Year: 1890

page_text: Date of Application, 25th Sept., 1890
Complete Specification Left, 13th June, 1891-Accepted, 25th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in or applicable to the Wharfdale and other
Letterpress Printing Machines.
We, JAMES SALMON, of 27 Blackfriars Street, Salford, Manchester, in the
County of Lancaster, Printers Engineer, and JOHN CAPPER, and WILLIAM
DUFFETT, at the same address, Engineers, do hereby declare the nature of the said
invention, to be as follows:-
Our invention relates to arrangements of mechanism, by which the cylinder and
mechanism for taking off and delivering the sheets when printed, and the fly
mechanism, are readily removed from, and clear of the impression cylinder and out
of the way of the workmen, when required, and as readily brought back again to
their working position.
This object has hitherto been partly effected by various arrangements of
mechanism, but not so as to entirely remove all obstruction to the workmen, as is
the case by our invention.
The taking off tape cylinder, tape mechanism, and fly mechanism, is the same in
arrangement and construction as the ordinary mechanism, but by our invention the
frame carrying it, is mounted upon the upper ends of two bent levers or arms one
on each side of the machine, each arm being secured to a shaft passing across and
in front of the machine near the floor, which shaft is in suitable bearings upon the
framing of the machine.
When the taking off and fly mechanism is in its working position a spur wheel
on the tape cylinder is in gear with one on the impression cylinder and a pinion on
the oscillating "fly" shaft is in gear with a toothed segment for actuating it, and
the framing of the tape and fly mechanism rests upon a stop on the framing of the
machine and a pin which is inserted in a hole in the side of the main framing of the
machine comes against one side of one of the arms upon which the tape and fly.
mechanism is mounted.
When the tape and fly mechanism is to be removed clear and away from the
impression cylinder, the two arms are partly rotated upon their axis or shaft.
The weight of the tape and fly mechanism is counter-balanced by one or more
helical springs on the shaft, which are partly wound up when the shaft is moved
one way and unwound in moving the other way-but in place of helical or other
springs weights may be used or other arrangements for counter-balancing the weight
of the tape and fly mechanism carried by the said two arms.
Dated this Twentieth day of September 1890.
PETER J. LIVSEY,
Agent.
COMPLETE SPECIFICATION.
Improvements in or applicable to the Wharfdale and other
Letterpress Printing Machines.
We, ISABELLA MARIA SALMON, of Springwood, Compstall, in the County of
Chester, Widow and Sole Executrix of the late James Salmon of 27 Blackfriars
Street, Salford, Manchester, in the County of Lancaster, Printers Engineer, and
JOHN CAPPER and WILLIAM DUFFETT of the said last named address, Engineers
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 :-
Our invention relates to arrangements of mechanism, by which the cylinder and

page_text: mechanism for taking off and delivering the sheets when printed, and the fly
mechanism, are readily removed from, and clear of the impression cylinder and out
of the way of the workmen when required, and as readily brought back again to
their working position.
This object has hitherto been partly effected by various arrangements of
mechanism, but not so as to entirely remove all obstruction to the workmen, as is
the case by our invention.
The taking off tape cylinder, tape mechanism, and fly mechanism is the same in
arrangement and construction as the ordinary mechanism, but by our invention the
frame carrying it, is mounted upon the upper ends of two bent levers or arms one
on each side of the machine, each arm being secured to a shaft passing across and
in front of the machine near the floor, which shaft is in suitable bearings upon the
framing of the machine.
When the taking off and fly mechanism is in its working position a spur wheel
on the tape cylinder is in gear with one on the impression cylinder, and a pinion on
the oscillating "fly" shaft is in gear with a toothed segment for actuating it, and
the framing of the tape and fly mechanisin rests upon a stop on the framing of the
machine and a pin which is inserted in a hole in the side of the main framing of the
machine comes against one side of one of the arms upon which the tape and fly
mechanisin is mounted, or other arrangements may be used for holding the frame in
the working position.
When the tape and fly mechanism is to be removed clear and away from the
impression cylinder, the two arms are partly rotated upon their axis or shaft.
The weight of the tape and fly mechanism is counter-balanced by one or more
helical springs on the shaft, which are partly wound up when the shaft is moved
one way and unwound in moving the other way, but in place of helical or other
springs, weights may be used, or other arrangements, for counter-balancing the
weight of the tape and fly mechanism carried by the said two arms.
Fig. 1 is a side elevation of so much of a printing machine as will be required to
explain our invention.
Fig. 2 is a front elevation of a part of the shaft forming the axis of the two bent
arms to show the application of one of the two springs to it.
a,
is the side frame; b, the table for feeding the sheets to be printed; c, is the
axis of the impression cylinder; d, the lever having the toothed segment upon its
end, which gears with the pinion e¹, upon the end of the shaft e, having the blades
attached to it that form the "fly" for piling the printed sheets.
f, is the axis of the taking off cylinder, upon which and upon pulleys loose upon
the shaft e, the endless taking off tapes work, that convey the printed sheets to the
"fly."
There are two end frames g, one on each side of the machine to carry the
bearings for the shafts f, and e, and other connected parts, and these side frames g,
are connected by and attached to a rod or bar h, passing across the machine, and
each end of the rod or bar h, is carried in and attached to the upper end of one of
two bent arms k, the lower ends of which are secured to a shaft k', passing across
the machine; this shaft k', having its bearings in brackets a', on the side framing a.
The bent arms k, the taking off cylinder and fly mechanism, are shown in full
line in Fig. 1 in the position they occupy when the machine is printing, in which
position, the rod or bar. h, rests on each side of the machine on a bracket from the
stand for the impression cylinder that is secured to the side framing to which
bracket the rod or bar h, is clamped by a part g¹, that can be readily turned on a
screw, to secure or release the rod or bar.
When in the position shown in full line in Fig. 1, the spur wheel f¹, on the
shaft, of the taking off cylinder is in gear with the spur wheel cl, on the shaft c,
of the impression cylinder, and to show when the two spur wheels f¹, and c¹, are
correctly in gear, one tooth of one wheel is marked to come into the space between
two teeth of the other spur wheel which are also marked.
Before the spur pinion e', on the fly shaft e, is taken out of gear with the toothed

page_text: segment on the end of the arm d, a pin d' is passed into a hole in the side frame a,
to keep the arm d, in the correct position for the fly shaft to gear with the segment
the blades of the fly when this takes place being in the position in which the sheet,
carried by the tapes, will pass over them.
The pin d', is removed when the pinion e', is in gear with the toothed segment on
the arm d, before the machine begins to work.
The taking off cylinder and connected mechanism are shown in dotted line in
Fig. 1, in their position when removed clear away from the impression cylinder.
On one side of the machine there is a square projection ², from the side frame,
and there is a projection ³, from the inside of one bent arm k, which comes under
and against the square projection k³, when the bent arms k, are in the dotted
position.
There is a round projection k, that extends from the other side frame a, which
comes against the side of the arm k, as indicated in Fig. 1 when the arms are hack
to their fullest extent.
We prefer to use two helical springs 1, on the shaft k¹, to partly counter-balance
the weight of the bent arms and the parts carried by them, the arrangement of one
of these springs 1, on one side is shown by Fig. 2.
One end of the spring 1, is secured in a hole in the bracket a', for one bearing of
the shaft k, the other end is in a hole in a collar 1, adjustable upon and secured by
a set screw to the shaft k'. The springs act by torsion.
When the bent arms k, are in the dotted position there is the least torsion upon
the springs (7) acting to rotate the shaft k¹, to bring the bent arms k, to the dotted
position, but this torsion increases as the bent arms k, are moved into their position
shown in full line in Fig. 1, the leverage increasing by that movement so that the
weight is practically counter-balanced, and it becomes easy to move the bent
levers k, from that position, in which they are shown in full line in Fig. 1 to that
in which they are shown in dotted line.
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 letterpress printing machines, the arrangement of the taking off and fly
mechanism upon arms having their fulcrum on the framing of the machine, so that
by oscillating the arms the taking off and fly mechanism can be readily discon-
nected and moved from their position when at work to a position clear of the
impression cylinder and vice versa substantially as and for the purpose hereinbefore
described and illustrated by the drawings.
2. The combination and arrangement of mechanism substantially as and for the
purpose hereinbefore described and illustrated by the drawings.
Dated this 12th day of June 1891.
PETER J. LIVSEY,
Agent.