Improvements in the Method of and Apparatus for the Delivery of Sheets, and the Braking of Printing Machine Cylinders.
Year: 1897

page_text: Date of Application, 22nd Mar.,
1897
Complete Specification Left, 22nd Dec., 1897-Accepted, 19th Mar., 1898
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Apparatus for the Delivery of
Sheets, and the Braking of Printing Machine Cylinders.
WILLIAM HENRY DAWSON, Maple Bank, Otley, Printer's Engineer, JAMES STOTT,
Granville Terrace, Otley, Printer's Engineer, do hereby declare the nature of this
invention to be as follows:
This invention has for its object certain improvements in what is known as the
stop cylinder printing machine, by a novel combination of parts so arranged that
each sheet of paper or the like as it passes through the machine is delivered into
a receptacle without the use of either flyer or fan, and also to arrange two or more
brakes on the brake wheel of the impression cylinder and connect them together
in such a manner that when in operation will give equal pressure on the brake
wheel of the impresson cylinder so as to prevent uneven wear of bearing of cylinder
and to reduce the hitherto variable pressure caused by the raising or lowering
of the cylinder and reducing the extraordinary friction caused by using one
brake alone.
"
"
(1st) We accomplish our object by extending the travel of the tape or tapes
which have hitherto carried the sheet to the flyer until the cylinder arrives home
the leading end of the sheet being against a stop and the tapes are stationary while
in this position we reciprocate the extended portion of the tape or tapes which is
provided with a suitable mode of motion in such a manner that the sheet is
delivered into a receptacle provided to receive it, motion is given to the reciprocat-
ing movement from any convenient part of the machine.
2nd We provide supports in the framework around the brake wheel of a
printing machine cylinder for two or more brakes from which is carried levers
provided with brakes and provision for connecting the same to each other so that
when operated on from one actuates the whole thus giving equal pressure to one
and all on the brake wheel and thereby distributing the friction.
By the above arrangement sheets are delivered without the use of flyer or fan
thus causing less damage to the printed sheets, the cylinder is brought home in a
more gentle manner without causing the amount of damage to the neck and reduc-
ing the variation of pressure when the cylinder is either raised or lowered.
Dated this 20th day of March 1897.
WILLIAM HENRY DAWSON,
JAMES STOTT.

page_text: Improvements in the Method of and Apparatus for the Delivery of
Sheets, and the Braking of Printing Machine Cylinders.
We, WILLIAM HENRY DAWSON, of Maple Bank, Otley, Printer's Engineer, and
JAMES STOTT, of Granville Terrace, Otley, Printer's Engineer, 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:-
A
This invention has for its object certain improvements in what is known as the
stop cylinder printing machine, by a novel combination of parts so arranged that
each sheet of paper, or the like, after passing through the machine, is delivered
into or on a receptacle, afterwards called a delivery board, without the use of flyer
or fan, and thus prevents the marking or smearing of sheets, which hitherto
has been a defect, and at the same time lessens the cost of production.
And also to arrange two or more brakes, (preferably two), to act on the brake
wheel of the impression cylinder, and connect them together in such a manner,
that when in operation, they will give equal pressure on the brake wheel of the
impression cylinder, so as to prevent uneven wear of bearing, and to reduce the
hitherto variable pressure of the brake caused by the raising or lowering of the
cylinder, and reduce the extraordinary friction caused by using one brake alone.
the rocker arm having an elongated slot, a picker stick pivotally connected to the
1st. In stop cylinder printing machines as commonly constructed, the delivery
of sheets is accomplished by what is known as a flyer, or fan, working in con-
junction with tapes, or other known carrying mechanism, the flyer arresting the
sheet while being borne along by the tapes or their equivalent, and depositing
it on the delivery board, and thus the marking or smearing of sheets is obvious by
the contact or pressure of the flyer fingers.
As is well known, the cylinder of a stop cylinder printing machine revolves and
receives its motion together with the delivery mechanism while the table is
travelling in one direction, and is practically stationary on its return, and thus
receives a uniform distance of travel, it often requires more than one revolution
for conveying the sheet away, the sheet being retained in the delivery mechanism,
until it is started a second time.
In carrying out our improvement, we so arrange the travel of the tapes or
carrying mechanism, as to bear and retain the sheet until the said tapes or carry-
ing mechanism is stationary; we then reciprocate the bearing portion, and the
sheet is deposited on the delivery board; motion for the reciprocation may be
obtained from any convenient part of the machine.
Our object is also attained by running the sheet to within a short distance f
its destination, and the tapes or delivery mechanism retaining hold of the latter
portion until the cylinder and delivery mechanism starts again, the motion used
for reciprocating the bearing portion being disconnected and the said bearing
portion being fixed in any desired position, according to the size of sheet being
delivered.
2nd. We provide supports on the framework around the brake wheel of a print-
ing machine cylinder, for two or more brakes, from which are carried levers.
provided with brakes, and provision for connecting the same to each other by means
of a connecting rod or rods, so that when one brake is put in operation the others
are simultaneously applied, thus. giving equal pressure to one and each on the
brake wheel, and thereby distributing the friction.
In describing our invention in detail, Figs. 1 and 2 represent such portions
of a side elevation of a stop cylinder printing machine as are necessary for our

page_text: purpose, Fig. 1 showing the tapes and reciprocating motion with the rollers
extended, and bearing the sheet, while Fig. 2 shows the reciprocating motion
with the rollers contracted.
Fig. 3 represents the second part of our invention, and is a part side elevation
of a stop cylinder printing machine, showing sufficient for describing the same,
In each of the Figs. where similar parts are represented they are indicated by
similar letters.
On Figs. 1 and 2 the impression cylinder is marked A, taking off cylinder B,
which in Fig. 1 are provided with grippers "A1" and A 2" bowl shaft C,
feed board D), delivery board E; these are mounted in the ordinary manner,
side arms F, slides G with rack attached for gearing with wheel H, pinion I,
endless tapes L, rollers or tape shafts 1, 2, 3, 4 and cylinder B, around which
the endless tapes L pass, bowl shaft 5, lever 6, and operating rack K to gear
with pinion I and worked from any convenient part of the machine.
.
The sheet being fed from the feed board D is received by the grippers
"AI"
on cylinder A, whilst in a stationary position, receives its impression while the
cylinder is travelling in the direction indicated by the arrow, and is taken up to
the taking off cylinder B, the grippers "A2" are so timed to receive the sheet
from the grippers A 1," and convey it round the cylinder B and under shafi (
provided with bowls to rest upon the edges of the sheet, or in the gutters of the
printed matter; the grippers "A2" now release the sheet, and it is held by the
bowls on shaft C.
About this point, the cylinder A has made one revolution, and is practically
stationary, whilst the table reciprocates and engages with the cylinder again,
bringing forward a second sheet; during the time this is being operated upon as
previously described, the first sheet is conveyed away by the endless tapes L,
which, when the second sheet arrives at the point described for the first sheet,
the slides G are at their extended position, and the tapes become stationary, when
at this point the rack K being engaged with pinion wheel I, operates wheel HI,
geared with slide G, and brings it into its contracted position, thus removing the
bearing of the sheet and depositing it on the delivery board E.
When the reciprocating motion is in use for the delivery of sheets as above
described, the shaft carrying bowls 5, and supported by lever 6, are raised or
removed to clear the tape roller 4, but when the reciprocating motion is stopped
and deliver the sheets without its operation, the levers 6 are lowered, so that bowls
on bowl shaft 5 may rest upon roller 4, to hold the sheet until a third sheet is fed,
which then deliver it on the delivery board, or the lever G may be supported
from side arm F, in a fixed position, when the roller 4 may come in contact with
it at its extended position, when the reciprocating motion is in operation.
Fig. 3 illustrates the second part of our invention, AA being frame-work of
machine, BB support for lever, FF provided with brake EE suitably jointed,
CC support for bell crank lever II, which is jointed to work lever G G provided
with brake EE: DD brake wheel, G G is connected to lever FF by means of a
connecting rod HH, the whole of the joints being free to work, and operated with
rod KK, supported by lever L L with cam MM, and in operation works in the
following manner. When the cam M M is on the top lift as shown, the rod KK
has operated the bell crank lever II, which operates the lever GG, it being
supported with connecting rod HH to lever FF, brings the brakes EE into contact
with the brake wheel DD.
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: -
1st. The method of delivery of sheets as they issue from a stop cylinder printing
machine, by the removal of the bearing portion, while the cylinder and the rest
of the carrying mechanism is at rest awaiting their re-engagement.

page_text: 2nd. The combination and arrangement of a delivery provided with slides such
as G, for reciprocation or fixing, for the delivery of sheets in the manner as herein
before described, and illustrated in Figs. 1 and 2.
3rd. In a stop cylinder printing machine the employment of two brakes mounted
in the manner described, and for the purpose set forth and illustrated by the
accompanying drawing Fig. 3, substantially as therein described.
Dated this 21st day of December 190
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds.
Patent Agent for the Applicants.