IMPROVEMENTS IN PRINTING MACHINES
Year: 1885

page_text: We, THOMAS GALLOWAY DAWSON and JEREMIAH DAWSON of Ashfield Foundry,
Otley, in the County of York, Printers' Engineers, do hereby declare the nature of
our invention for IMPROVEMENTS IN PRINTING MACHINES, to be as follows:-
This invention relates to that kind of Perfecting printing machines known as
Book or Tape Machines, and has for its object the separating of the tapes in such
a manner, so as to provide an outlet for the sheets to pass through to the outside
of the cylinders, and to deliver them at the top of the machine, instead of between
the cylinders, as heretofore.
In carrying out our invention, we place the impression and conducting cylinders
in the usual positions, and divide the long endless tapes into two sets. At the
junctions of these tapes we use switches for guiding the sheets from one set
of tapes to the others, and for diverting them to a third set of delivering tapes
at the top of the machine. The cylinders are so timed that three sheets are in the
machine at the same time; the first sheet passing out between the second and
third, and between the first impression and conducting cylinders; a fixed switch
is placed at the junction of these cylinders to guide the sheets, and a moveable or
Oscillating switch is placed on the top of the first conducting cylinder to divert
the sheets to the delivery tapes. These tapes carry the sheets to an ordinary flyer,
which deposits them on a board placed close to the feeder. The moveable switch
and flyer are operated by cams, and the third set of tapes are driven from a pulley.
placed on the axle of one of the cylinders.

page_text: We THOMAS GALLOWAY DAWSON and JEREMIAH DAWSON of Ashfield Foundry,
Otley, in the County of York, Printers 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 :-
This invention relates to that kind of Perfecting printing machines known as
"Book or Tape machines;" and has for its object, the separating of the tapes in
such a manner, so as to provide an outlet for the sheets to pass through to the
outside of the cylinders; and to deliver them at the top of the machine instead
of between the cylinders as hitberto.
In carrying out this invention, we place the impression and conducting cylinders
in the usual positions, and divide the long endless tapes into two sets. At the
junction of these tapes between the cylinders, wo use stationary switches for
guiding the sheets from one set of tapes to the other; and for diverting the sheets
to a third set of tapes at the top of the machine, the switches are made to oscillate,
by which when in one position, they cause the sheets to pass from the first
impression cylinder to the second and when moved to the other extreme position,
the printed sheets are diverted to the third set of tapes, by which they are conveyed
to the flyer and deposited on a board placed close to the feeder, thereby enabling
the attendant to observe the work as it is delivered from the machine;
The type is placed on the reciprocating table, which is of the ordinary construction
and actuated in the usual manner.
In the accompanying drawings, Fig. 1 represents such portions of the side
elevation of a Perfecting printing machine, as are required to described the
improvements; and Fig. 2 is a plan, with the third set of tapes and rollers at
the top of the machine removed.
The framework of the machine is indicated by the letter A, and on which are
mounted in the usual positious, the impression and conducting cylinders B, C, D
and E; but instead of the tapes passing around the cylinders in the ordinary
manuer, they are divided into two sets, for conveying the paper over the type, and
delivering it to a third set of tapes for removal from the machine.
.
The paper is fed from the feeding board B against the feed gauge G, which is
lifted at every revolution of the impression cylinder to allow the sheet to be taken
forward by the grippers on the feeding cylinder G' to the first set of tapes H, and H¹
passing around the first impression cylinder B, and rollers in the manner as herein-
after described; and when the paper has received its first impression and arrived
at the stationary switches J, the sheet is delivered to the second set of tapes H³
and H which pass around the cylinders as hereinafter described.
When the sheet is delivered by the first impression cylinder, the oscillating
switches J¹ are then in such a position, so as to allow the sheet to continue its
course with the second set of tapes H2 which convey the sheet around the second
conducting and impression cylinders D and E; the sheet receiving an impression
on the opposite side continues its course in the direction of the arrow between the
double set of tapes Hand H back to the stationary switches J, where it passes
out between the cylinders B and C, into its original path, along which it travels
until reaching the oscillating switches J, which are then moved into such a

page_text: position, that the pointed ends are close to the conducting cylinder C, so that
they divert the sheet upwards to the third set of tapes H3 and H³ the switches
being operated by the cam K, through the connecting rod and levers K¹.
From the third set of tapes the sheet is removed by means of an ordinary
flyer L, operated by the cam L¹ secured on the shaft of the first impression
cylinder B, the cam actuating the rack rod M, which gears with a pinion M', on
the flyer spindle, thereby causing it to oscillate and remove the sheets from the
third set of tapes H and H on to the delivery board N, located by the side
of the feeder or attendant who can then observe the work as it is delivered from
the machine.
Each set of tapes is composed of inner and outer tapes, the inner tapes H, of the
first set extend over a portion of the circumference of the feeding cylinder G¹
around the impression cylinder B, over a portion of the cylinder C, and around the
small pullies or rollers 1 and tightening rollers 2; while the outer set H³ of the
first set of tapes extend around the feeding cylinder G'impression cylinder B, over
small pullies or rollers 3, 4, 5, 6, and tightening rollers 7 thus completing the first
set of double tapes.
The inner tapes H* of the second set extend around the conducting cylinders C
and D, the impression cylinder E, pullies or rollers 8 and 9 and the tightening
pullies 10, which are of the ordinary and well known description. The outer
set H extend under the conducting cylinder D around impression cylinder E,
and over small pullies or rollers 11, 12, 13 tightening pullies 14 and pullies or
rollers 15, and another series of pullies placed between cylinder C and underside
of switches J thus completing the second set of tapes.
The third set of tapes for removing the sheets are driven by a belt and pulley,
the latter may be secured on the shaft of cylinder P. The inner tapes H³ of this
set extend around the cylinder P and small pullies or rollers 17, 18, and over 19
and the outer set H around the cylinder P over small pullies or rollers 20, 21, 22,
and over 19, thus completing the third set of tapos.
The impression and conducting cylinders are driven in the ordinary manner;
the feed gauge G, grippers on feeding cylinder G₁ and the flyer are of the ordinary
construction, and may be operated by any of the well known methods now in
common use; and we wish it to be distinctly understood that we make no claim
thereto.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what
we claim is
The combination of the switches J and J with the cylinders substantially in the
manner and for the purpose described.
The division of the tapes H and H¹ from the tapes H³ and Hª for the purpose
set forth.
The third set of tapes H³ and H placed above the conducting cylinders and
working in conjunction with the flyer L, for the purpose as herein before set forth.
The combination of the cylinders B, C, D, and E, with the third set of tapes H³
and H for the purpose as herein before set forth.
Doted this Oth der of Do 100%
WAUGH & CHAPMAN,
Agents.