IMPROVEMENTS IN PRINTING MACHINERY
Year: 1873

page_text: LETTERS PATENT to Thomas Galloway Dawson and Jeremiah Dawson,
of Otley, in the County of York, Printers' Engineers, for the In-
vention of "IMPROVEMENTS IN PRINTING MACHINERY."
Sealed the 20th March 1874, and dated the 1st October 1873.
PROVISIONAL SPECIFICATION left by the said Thomas Galloway
Dawson and Jeremiah Dawson at the Office of the Commissioners
of Patents, with their Petition, on the 1st October 1873.
We, THOMAS GALLOWAY DAWSON and JEREMIAH DAWSON, of Otley,
in the County of York, Printers' Engineers, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN PRINTING MACHINERY,”
to be as follows:—
This Invention relates to improvements in printing machinery, and
consists of an arrangement whereby the sheets of paper after being
printed are taken from the impression roller or cylinder and placed
printed side upwards on a board prepared to receive them. This

page_text: apparatus is applicable to what is known as the Wharfedale printing
machine, or to any other kind of machine where the type bed has a
horizontal reciprocating motion.
The first part of this Invention consists in placing immediately over
the impression or printing cylinder the wooden cylinder of the fly i
apparatus fitted with grippers, acting in such a position as to scize the
sheet after being printed in the same instant as it is liberated from the
grippers of the impression or printing cylinder, and convey the same to
the flyer direct without the use of any other rollers.
The second part consists in giving the necessary motion to the
grippers of the wooden cylinder of the fly apparatus by means of a small
tappet bedded into the impression or printing cylinder, acting upon the
gripper shaft direct, thus obviating the necessity of any bars or levers
ordinarily used to bring the motion from any of the remoter parts of the
machine.
The third part consists in an arrangement by which the fly apparatus
is lifted into such a position as will allow of free access to the impression
cylinder, ink rollers, and type bed, leaving the whole clear so that sheets
can be taken from the printing cylinder (as in a machine without
flyers) if needed by hand. The samo is carried into effect by fixing two
iron brackets on the top of the stands which carry the printing cylinder.
On the inside of these brackets studs are fixed on which swing two arms
which carry the wooden cylinder and other apparatus connected with it.
When the apparatus is in working order the arms extend out over
towards the receiving board in nearly a horizontal position. When not
in use the apparatus is lifted into a perpendicular position directly over
the centre of the printing cylinder and held there by a paul or catch
fixed on the inside of one of the brackets above mentioned.
The arrangement for guiding the small cylinder into its proper place
with the printing cylinder when lowered is composed of a flat spring
fixed on the inside of one of the arms which bear the wooden cylinder;
a round or other shaped pin is formed or fixed on the loose end of this
spring.
CHETI
19
•
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page_text: the pin on the end of spring drops into a hole cut out of a rim formed
on the side of wheel on wooden cylinder which keeps the wheel and
cylinder in the same position as when lifted out. When lowered down
for use and within a short distance from the bottom, the spring comes
in 'contact with a stud fixed on brackets directly under the end of
spring; this prevents the spring from falling further with the apparatus
and releases it from the wheel, and allows the wheel with cylinder to
revolve.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Galloway Dawson and Jeremiah Dawson
in the Great Seal Patent Office on the 28th March 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, THOMAS
GALLOWAY DAWSON and JEREMIAH Dawson, of Otley, in the County of
York, Printers' Engineers, send greeting.
7
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of October, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Thomas Galloway Dawson' and
Jeremiah Dawson, Her special licence that we, the said Thomas
Galloway Dawson and Jeremiah Dawson, executors, 'administrators,
and assigns, or such others as we, the said Thomas Galloway Dawson-
and Jeremiah Dawson, executors, administrators, and assigns, should
at any time agree with and no others, from time to time and
at all times thereafter during the term-therein expressed, should and
lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVEMENTS IN PRINTING MACHINERY," upon
the condition (amongst others) that we, the, said Thomas Galloway.
Dawson and Jeremiah Dawson, our executors or administrators,_by_an
instrument in writing under our, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention and in what manner the same was to be performed, and
•

page_text: cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that we, the said Thomas Galloway Dawson and
Jeremiah Dawson, do hereby declare the nature of our said Invention,
and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This Invention relates to improvements in machines having a recipro-
cating motion whereby the sheets of paper are taken direct from the
printing cylinder and placed printed side upwards on a board prepared
to receive them.
The wooden cylinder of the fly apparatus is fitted with grippers acting
in such a position as to seize the sheet in the same instant as it is
liberated from the grippers of the impression or printing cylinder, and
conveys the same to the flyer direct without the use of any other:
rollers.
The necessary motion to the grippers of the wooden cylinder is
imparted by a small tappet bedded into the printing cylinder, thus
obviating the necessity of any mechanical contrivances ordinarily in use
to bring the motion from some other part of the machine. The whole
of the fly apparatus is lifted clear of the printing cylinder, thus allowing
free access to the printing cylinder; there is also an arrangement by
which the toothed wheel of the wooden cylinder is compelled when
again lowered to gear properly into the teeth of the printing cylinder.
Having thus described the nature of our improvement, we will now
proceed to describe the Drawings hereunto annexed and also explain
the action of the apparatus.
Fig. 1 is a plan, and Fig. 2, a sido clevation of so much of a machine
as is necessary to shew the application of our improvements; tho corre-
sponding letters of refrence indicate the same parts on all the Drawings.
A is the framework of machine; B, the printing cylinder; C, the
grippers into which the sheets are fed; D, the feeding board; E, the
stands for printing cylinder; F, arms on which the wooden cylinder and
the flyer are fixed; G, the brackets on which the arms swing; 1, the

page_text: wooden cylinder; I, the flyer; J, the receiving board swings in the
ordinary way; L, pinion wheel on ond of flyer shaft; M, cam for
working flyer; O, shaft on which cam is fixed; O', handle for stopping
the action of flyer.
Fig. 3 is a diagram shewing the tapes and grippers and the general
outline of our improved apparatus as fitted to a machine cylinder; the
sheets are fed into the grippers C. The cylinder then revolves with
the sheet until the front edge is in a line with the centres of the two
cylinders, the grippers O then release it and the grippers on small
cylinder seize it and carry it round until they are opened by means of
the fixed cam P, the sheet then travels forward over the flyer until it
comes in contact with the stop or guide; the flyer is then turned over
by means of the quadrant and wheel M and L, as shewn, thus laying
the sheets printed side upwards on the receiving board.
Our improvements for giving motion to the small grippers on wooden
cylinder consists in fixing on printing cylinder a small tappet Q, which
in conjunction with the fixed cam P opens and closes the small grippers
on wooden cylinder, thus avoiding the use of any complicated motions
from the more remote parts of the machine. This tappet is fixed on the
large cylinder in such a position as to open the grippers on small
cylinder sufficiently wide to allow of their passing under the sheet at the
proper moment, after which the tappet passes away with the large
cylinder and the grippers on small cylinder close and pass away with
the sheet to the flyer.
Our improvement for making the printing cylinder clearly accessible
is shewn in Fig. 4, and consists in fixing the arms F on studs X on the
inner sides of brackets G, these studs are fixed a short distance from the
centre of wooden cylinder on the side next the feeding board D, so that
when the apparatus is not required it can be lifted into an upright
position over the printing cylinder, as shown on Fig. 5, thus enabling
the sheets to be lifted off the cylinder by hand in the ordinary way when
required.
Fig. 4 is a side elevation shewing our improved appliance for guiding
the wheel on wooden cylinder into gear with wheel on printing cylinder
when the flyer apparatus is brought from an upright into an horizontal
position. His the wooden cylinder on the end of which is fixed a wheel
-

page_text: that gears with wheel on printing cylinder, the outside of this wheel is
recessed, and on the inner side of the rim a hole is cut as shewn at V.
When the apparatus is lifted and before the wheels are out of gear the
spring end W falls into the hole V in wheel, thus keeping it in the same
position. When lowered down for use and when the cylinder wheels
have geared (and the apparatus having a short distance to fall) the
spring W comes in contact with a flat stud R fixed on the inside of
bracket G directly under the end of spring. This provents the spring
from falling further with the apparatus, and releases it from the wheel
and allows the wheel with cylinder to revolve.
Fig. 5 is a side elevation of the apparatus lifted into an upright
position, as before described. On the outside of the arm F is cast a
square boss S, which when the apparatus is lifted comes in contact with
a similar boss cast on inside of bracket G, tho catch Z then falls down in
front of boss on arm F, preventing it from falling or being lowered ]
until the catch is lifted up again.

page_text: Thirdly. The application of spring for guiding the teeth of wheel on .
wooden cylinder into gear with teeth of wheel on printing cylinder, as
described.
Fourthly. Fixing the flyer on receiving board, as described.
In witness whercof, we, the said Thomas Galloway Dawson and
Jeremiah Dawson, of Otley, have hercunto set our hands and
seals, this Twenty-seventh day of March, One thousand eight
hundred and seventy-four.
Witness,
JOHN WAUGH,
THOMAS GALLOWAY DAWSON. (L.S.)
JEREMIAH DAWSON.
(L.S.)
Civil Engineer,
Ivegate,
Bradford.