IMPROVEMENTS IN PRINTING MACHINES OR PRESSES
Year: 1883

page_text: "
LETTERS PATENT to William Robert Lake, of the firm of Haseltine Lake
and Co Patent Agents, Southampton Buildings London for an Invention
of "IMPROVEMENTS IN PRINTING MACHINES OR PRESSES Communicated to
him from abroad by John Thomas Hawkins, of Taunton, Massachusetts, United
States of America
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 27th February 1883.
WILLIAM ROBERT LAKE, of the firm of Haseltine Lake & Co, Patent Agents,
Southampton Buildings, London " 'IMPROVEMENTS IN PRINTING MACHINES OR
PRESSES [A communication to him from abroad by John Thomas Hawkins, of
Taunton, Massachusetts, United States of America]
This invention relates to printing presses and more particularly to that class of
printing machines commonly known as perfecting presses."
The object of the said invention is to dispense with the curved stereotype plates,
heretofore generally used upon the type-cylinders of "perfecting presses" and to
print perfected sheets from a continuous web of paper on the original type-forms,
and thus to save the cost of the stereotype plant and the time necessarily consumed
in moulding and casting the stereotype plates from the original type forms after
being set up by the compositor, the self feeding speed and all the other advantages
of the perfecting press being at the same time preserved. It will be understood by
those skilled in the art that stereotype plates inay be used upon the type cylinders
of these machines as well as original type forms, if desired. But there is no
advantage in putting stereotype plates on cylinders made large enough to carry a
number of forms for many impressions. The better practice is the common one
(where stereotype plates are used) that is, to secure such plates upon a smaller
cylinder and to multiply the number of cylinders carrying such forms to conform
to the number of the impressions required, instead of making one large cylinder
carry all the forms required for the several impressions.
The mere perfecting feature of printing from the roll a continuous web of paper

page_text: on both sides, at one operation, upon a cylinder provided with forms of type set
up by the compositor, instead of being stereotyped, is not new, but the means which
constitute the present invention are novel and impart great simplicity and durability
to the machines at a comparatively cheap cost of construction.
For facility of description and convenience of reference, this invention will be
divided into two parts, the first part of which consists in arranging the parts of
the machine as hereinafter described so that by means of feeding and cutting
cylinders, a type revolving cylinder and two impression cylinders geared thereto
at equal surface velocities, the sheet of paper to be printed is cut from the web
after its seizure for the first impression, when, during the course of said impression,
it is fed head-first between the type cylinder and the first impression cylinder,
from which it is taken and thence fed tail-first between a second form on the type
cylinder and the second impression cylinder, in the course of which operation it
receives the second impression on its opposite side, whence it is delivered as may be
required.
the
• According to the said invention the main frame of the machine standing upon a
base plate has journalled thereon a shaft which carries on one end a pinion and
upon the other end a belt pulley to which the necessary power, from any suitable
source, is applied to impart motion to all the different parts of the machine, the
said pinion engages with a gear wheel secured to the type-cylinder upon whose
periphery the type forms are secured in the ordinary manner. The impression
cylinders respectively and successively impart the first and second impressions to
the sheets and to each of the said cylinders is secured'a gear wheel,' which wheels
engage the gear wheel upon the type cylinder. The said gear wheels are so pro-
portioned, that when the impression cylinders are moved out of contact with the
type cylinder as hereinafter explained, they will not pass entirely out of gear with
gear wheel upon the type cylinder. A second shaft carried in suitable bearings
upon the outside of one of the main frames is actuated by the shaft of the first
impression cylinder through the intervention of mitre wheels, a vertical shaft
journalled in suitable bearings projected from one of the frames, and bevel wheels.
These several wheels are so proportioned that the second shaft makes one revolution
for each revolution of the type cylinder; a second vertical shaft journalled in one
of the frames similarly to the first vertical shaft is driven by the second shaft,
through the intervention of a second pair of bevel gears and imparts motion to the
lower cylinder of the pair of cutting and feeding cylinders by means of a third
pair of gears. The said cutting and feeding cylinders are geared together by a
fourth pair of spur gear wheels and the gear wheels actuating them from the second
shaft are so proportioned, as to give to the cutting and feeding cylinders such
surface velocities as to deliver one severed sheet for each revolution of the type
cylinder. The feeding cylinder has in its surface, parallel with its axis, a recess or
slot and the cutting cylinder has a serrated knife for severing the sheets from the
web in the ordinary and well known manner. The roll of paper is carried on a
shaft running in suitable bearings formed in the main frames from which shaft the
web of paper is led to and between the feeding cylinder and a binding or pressure
roller also journalled in the main frames. By passing over the feeding cylinder
and between it and the cutting cylinder the paper is cut into sheets of proper
length by the knife as it passes to the first impression cylinder. Two shafts
hereinafter termed the third and fourth shafts are also journalled in the main
frames and carry a series of tape pulleys upon which are carried tapes the said
pulleys being driven by a gear wheel through an interposed idler gear wheel and a
second gear upon one end of the third shaft the idler gear wheel running upon a
stud secured to the inside of one of the main frames. Bridge fingers are supported
in series upon a bar, secured at each end to the main frames. The said fingers are
spaced across the press alternately with the tapes and their ends adjoining the
cutting and feeding cylinders, enter shallow grooves turned in the periphery of the
cutting cylinder for the purpose of stripping the advancing edge of the web of
paper from the said cylinder after the preceding sheet has been severed from it by

page_text: сле коте. The other ends oL the said ugers extem neatly to impress
cylinder their upper surfaces leading nearly at a tangent to its upper surface.
Within the usual gaps or recesses in the impression cylinders are ordinary gripers
mounted, respectively, upon an ordinary griper shaft in each cylinder. The said
gripers seize each sheet at the proper time to receive the impression and carry it
through the impression, when its advancing edge is released. The sheet-lifter-
fingers are spaced in series alternately with the said gripers and on the top of
the free ends of the said fingers the sheets lie, when clamped by the gripers.
These gripers and lifter fingers are operated in the usual way by cams attached to
the main frames and by arms and rollers engaging the said cams and secured to
their respective shafts. These cams are so placed and formed as to operate the
gripers and lifter fingers at the proper, times, respectively, to seize convey and
deliver the sheets as hereinafter explained. The impression cylinders are
journalled in excentric boxes which are also journalled in the main frames.
Secured to the said excentric boxes are lever arms carrying on their free ends
rollers which engage with a suitably formed groove in each of two box-cams
secured upon the axis or shaft of the type cylinder outside of the main frames.
The said cams, their levers, with the rollers, and the excentric boxes act together
to bring each impression cylinder alternately in contact with the type cylinder to
make the impression from its respective type form, and also to hold the impression
cylinders out of contact with the type cylinder when all portions of its periphery,
save the said type surface, are passing the said impression cylinders. A pressure
pulley or binding roller is carried upon a shaft journalled in the main frames. Two
or more of these rollers may be set in such positions as to bear only upon the
unprinted margins of the sheet as it passes around with the first impression
cylinder after having been printed on its first side. The said rollers serve also to
convey the sheet when its tail end has passed from between the type cylinder and
the first impression cylinder. A series of tapes are driven by two gear wheels the
former of which runs upon a stud attached to one of the main frames, and the latter
is secured to the upper pulley-shaft of the said tapes, a corresponding series of
lower tape pulleys being journalled in brackets projecting from the said frames
which said pulleys are driven by the tapes. To a rock shaft journalled in the main
frames is secured an arm which carries at its free end a roller. The said roller
runs in the groove of a cam secured to the second shaft which groove is so formed
as to impart a vibrating motion to the said arm. Secured to the said rock shaft is
a fly formed with double fingers; and on pivots, secured to two or more of the said
fingers, pulleys run loosely, being driven by frictional contact with the tapes or
with the interposed sheets, when the latter are passing between the said tapes and
the said pulleys. If desired a series of tapes may also run upon the pulleys upon
the said fingers in which case the sheet in passing down between the double fingers
of the fly will be conveyed and guided by two series of tapes, one set or series on
each side or surface of the sheet. To a second rock shaft journalled in the main
frames, is secured an arm carrying on its free end a roller which also runs in the
groove of a cam secured to the second shaft, the said grooves being so formed as to
give a vibrating motion to another arm. To the central part of the second rock
shaft is secured an arm to which is attached a folder-creasing blade. From a cross-
bar a series of bridge fingers extend, in an inclined position, to a sheet stop, the
said bar and stop being each secured to the main frames and serving as bearings
for the folding rollers. The pair of folding rollers with the blade serve to make the
first fold in the perfected sheet in the ordinary and well known manner.
.
Motion is transmitted from the second shaft to the said folding rollers by means
of screw gears secured respectively to the said shaft and to the outer end of a fifth
shaft, the said shaft having secured to its inner end a bevel gear wheel, which
engages a corresponding gear wheel secured to one of the folding rollers. Two or
more pressure pulleys or binding rollers are carried upon a sixth shaft journalled
in the main frames which rollers serve a purpose similar to that served by the
pressure rollers, that is, they ensure the passage of the sheet down the inclined

page_text: bridge fingers after the tail of the sheet has passed from between the type cylinder
and the second impression cylinder. The inking apparatus may be arranged in
any well known suitable manner, and also the folding mechanism which will vary
according to the number and direction of the folds required. A series of stationary
stripper fingers and a series of bridge fingers are used for respectively stripping
and leading the sheet from the impression cylinders either to the fly or conveyer or
to the folded knife. It is obvious that from one pair to four pairs of impression
cylinders with as many rolls and webs of paper and either a folding or a flat
delivery may be used in several well known manners as circumstances may require.
I do not, therefore, confine myself to a precise arrangement for bringing into use
more than one pair of impression cylinders.
In the kind of press above described or whenever it is intended to secure type
upon the periphery of a cylinder, it is customary to secure the same in narrow
columns running parallel to the axis of the type cylinder making it necessary in
the folding of a folio sheet to make its single fold parallel with the said columns of
type. I sometimes arrange the folding blade to fold in the ordinary manner a
quarto sheet, in which case the first fold is made transversely to the columns of
type. When, however, the machine is designed to fold only a folio sheet, the folder
blade may be arranged to operate at right angles, or in either manner to suit the
particular folds intended to be imparted to the sheets.
The complete operation of the machine is as follows that is to say the web of
paper passing under the pressure rollers between the feeding and cutting cylinders
is fed forward upon the tapes by the action of the said cylinders to the point at
which the gripers of the first impression cylinders grasp its leading edge. Simul-
taneously with this grasping of the sheet by the gripers the cutting knife comes
into position to sever, and at the proper time severs, the proper length of sheet from
the web. The first impression cylinder now carries the severed sheet between
itself and the type cylinder, the type form being properly placed upon the said
cylinder, to meet the passing sheet. This operation prints the first side, at the
conclusion of which the first impression cylinder by the action of cams is moved
out of contact with the type cylinder until its proper type form again arrives
opposite to the first impression cylinder when it is again brought into contact with
the type cylinder. The gripers are caused to open by suitable cams after passing
the pressure pulleys and before passing the points of the fingers which lie close to
the periphery of the first impression cylinder, the lifter fingers being raised simul-
taneously with the opening of the said gripers. The head of the sheet is thus
delivered upon the points of the fingers and the sheet thus passes down between
the said fingers until it reaches the bottom of the opening between them.
Simultaneously with the arrival of the head of the sheet at the bottom of said
opening the fingers are caused by the action of a cam to vibrate to the right until
the tail end of the sheet is laid against the surface of the second impression
cylinder, at which time the gripers of the said cylinder are brought into position to
close upon the said end and to carry it through between the second impression and
type cylinders on the latter of which the type-form for printing the second side is
suitably situated to meet the sheet, which at this time is impressed between the
.said cylinders by the action of cams as before explained, thus printing the second
side of the sheet. The gripers of the second impression cylinder are caused to open
and, simultaneously also the lifter fingers to lift, after passing the pressure pulleys
and before passing the points of the bridge fingers. The tail (now the head) of the
sheet is thus passed upon and down the inclined bridge fingers under the folder
blade when upon the arrival of the sheet at the sheet stop the said folder blade
through the instrumentality of a cam and its connections already described makes
the first fold in the paper which then passes through the successive folds which may
be imparted to it in any desired manner as before explained.
It is not essential to the machine above described that the sheets be folded at all
and in place of the fold rollers and blade the ordinary vibrating fly or any other
suitable device may be used and operated in any suitable manner from the second

page_text: shaft to deliver the sheets fat upon a suitable board or table, the nugers of such oy
in that case occupying the place of the bridge fingers while receiving the sheet.
The second part of the said invention consists essentially in so arranging the
parts of the machine that by means of one or more pairs of feeding and cutting
cylinders a type revolving cylinder and one or more pairs of impression cylinders
geared thereto at equal surface velocities, the sheets of paper to be printed are first
cut from the web or webs when during the first impression, they are fed head first
through between the type cylinder and the first impression cylinder from which
the head of the sheets are projected during the said impression, at the end of which,
their tail-ends are directly delivered from the first impression cylinder or cylinders
(where more than one such cylinder is used) to the gripers of the second impression
cylinder or cylinders.
In carrying into practice this part of the said invention I provide the main frames.
of the machine standing upon a base plate.
A shaft is journalled in the said frames which carries on one end a pinion and
upon the other end a belt pulley to which the necessary power from any suitable
source is applied to impart motion to the different parts of the machine; the said
pinion engages with a gear wheel secured to the type cylinder upon whose periphery
the type forms are secured in the ordinary manner. The two pairs of impression
cylinders respectively and successively impart the first and second impressions to
the sheets, and to each of the said cylinders is secured a gear wheel, which gear
wheels severally engage with the gear wheel upon the type cylinder. The said
gear wheels are so proportioned that when the cylinders are moved out of contact
with the type cylinder as hereinafter explained they will not pass entirely out of
gear with the said gear wheel. A second shaft mounted in suitable bearings in one
of the frames is actuated by the shaft of the type cylinder through the intervention
of the bevel wheels, a vertical shaft journalled in suitable bearings projected from
one of the frames, and a second pair of bevel wheels.-The several wheels are so
proportioned that the second shaft makes one revolution for each revolution of the
type cylinder. The vertical shafts journalled in one frame similarly to the second
shaft are respectively driven by the said shaft through the intervention of a
third and fourth pair of bevel wheels,—and impart motion to the lower cylinders
of the two pairs of cutting and feeding cylinders by means of the bevel wheels.
The said pairs of cutting cylinders are each geared together by spur gears wheels.
secured to their axes, and the gear wheels actuating them from the second shaft
are so proportioned as to give to the cutting and feeding cylinders such surface
velocities as to deliver one sheet for each revolution of the type cylinder. The
feeding cylinders have in their surfaces parallel to their axes slots or recesses, and
the cutting cylinders each a serrated knife for severing the sheets from the webs in
the ordinary and well known manner. ·
The rolls of paper are carried on shafts running in suitable bearings in the
frames from which the webs of paper are led to, and between, the feeding cylinders
and the pressure rollers also journalled in the frames and passing over the feeding
cylinders, and between them and the cutting cylinders-are cut into sheets of
proper length by the knives. as they are passed to the impression cylinders. Shafts
journalled in the frames each carry a series of tape pulleys upon which run the
tapes, the said pulleys being driven by gear wheels through interposed idler pinions
and gear wheels, the idler gear wheels running upon studs secured to the inner
sides of the frames. The two series of bridge fingers are supported upon the cross
bars, secured at their ends to the frames.-The said fingers are spaced across the
press alternately with the two series of tapes and their ends adjoining the cutting
cylinders enter shallow grooves turned in the peripheries of said cylinders for the
purpose of stripping the advancing edges of the webs of paper from the said
cylinders after the preceding sheets have been severed from their respective webs
by the knives. The other ends of the bridge fingers extend nearly to the
impression cylinders.
The impression cylinders revolve upon shafts which are journalled excentrically.

page_text: .
in the frames and to whose ends are secured arms each carrying a roller running
in suitably formed grooves in a cam. which is secured to one end of the axis or
shaft of the type cylinder. The grooves in the said cam are two in number, one on
each side of the cam and two of the four rollers run in each of said grooves. This
arrangement of excentric shafts is for the purpose of bringing each of the impression
cylinders in contact with the type cylinder at the proper. times (when their
respective type forms secured to said type cylinder are passing) and it also keeps
said impression cylinders out of contact with the type cylinder during the
revolution of the remaining portions of said cylinder's surface. The cylinder
gripers are of the usual form and seize the sheets and hold them in contact with
their respective impression cylinders until the leading edges of the sheets have
passed through the impression: The sheet lifter fingers upon which the leading
edges of the sheets are clamped by the gripers are spaced alternately with the said
gripers throughout the length of the cylinder in the usual manner.
The sheet
lifter fingers are situated upon one impression cylinder so that their points lie
under the tail margin of each sheet, the said margins being made to overhang the
impression surfaces of the cylinders sufficiently for that purpose.
The shafts upon which the gripers are spaced and secured have each secured to
one end the segmental gears or sectors and the arms carrying rollers are pivoted
on the ends of the impression cylinders. The said arms have formed upon their
free ends other sector gears engaging with the first sectors. Pivoted to the inner
ends of the studs upon which the carrying rollers run are rods each carrying a
collar and a spring, the free ends of the said rods passing through lugs attached to
the cylinder heads.
To the shafts on which the sheet lifter fingers are spaced and secured, are secured
at one end the arms carrying rollers the said shafts being surrounded in part by a
helical spring so acting as to keep the points of the sheet lifter fingers pressing
tightly upon the cylinder when not lifted as hereinafter explained. The cams
secured to the inner side of the frames acting upon the rollers cause, the sheet
lifter fingers to elevate the head of the sheet from the respective impression
cylinders simultaneously with the opening of the gripers. The shafts in the first
cylinders only carry the lifter fingers hereinbefore described as lying under the
overhanging margins of the Sheets.
Levers secured to one end of the cylinder shafts carry rollers which engage with
cams so placed upon the inner side of the frames as to cause the tails of the sheets
to be elevated at the proper times to allow of their being seized by the gripers of
the second impression cylinders. Cams are secured to the inner side of the frames
and are so formed and placed as to open and close the cylinder gripers at the proper
times for releasing and griping the sheets-On the second shaft are two cains
engaging with rollers the latter being attached to rods forked at their lower ends
to embrace the said shaft. The upper ends of the said rods-are connected to
levers which are secured to two shafts the first of which carries a series of strippers
spaced across the machine so as to alternate with the gripers and lifter fingers.
On two of the strippers are carried two rollers set so as to roll upon the unprinted
margins of the sheets. On the other of the two shafts is a pair of arms carrying
rollers set in the same manner as are the rollers on the front of the two shafts so
as to roll upon the unprinted margins of the sheets only. The cams are so formed
and adjusted on the second shaft as to cause the points of the stripper fingers to lie
close to the first impression cylinder, and at the same time to keep the rollers in
contact with the tapes running upon their pulleys, when the sheet is being delivered
from the said Cylinder, and to make the rollers perform the same functions for the
other impression cylinder. One impression cylinder requires no stripper fingers to
correspond to those on the front cylinder, the bridge fingers serving that purpose
for the reason that the sheets come from the top of one cylinder and from the bottom
of the cylinder. Upon the second shaft are also secured two other Cams having
suitably formed grooves in which run rollers attached to the rods, each rod having
its free end bifurcated to embrace the said Shaft. The said rods are connected to

page_text: lever arms, secured to the rock-shafts, journalled in the frames. Attached to the
said rock-shafts are folder blades which through the instrumentallity of the camis
and their connections just described are caused to crease and enter the delivered
sbeets between the first pair of folding rollers to make the first fold upon the
arrival of the sheets at the proper place to receive such folds. The stripper and
bridge fingers, are secured respectively to cross bars and to a single and similar bar.
The Bridge fingers have alternating with them the tapes carried on pulleys and
driven from a gear wheel by a pinion. The folding rollers by which the first fold
is made are actuated from the second shaft through bevel gear wheels and the
vertical shafts and horizontal shafts.
"
I sometimes arrange three pairs of impression cylinders to print from three rolls
or webs and delivering to three folders. Then the folder blades for the cylinders
form one finger of two sets of fly fingers which convey the sheets to the folding
rollers the stripper and bridge fingers serving to direct the sheets thereto.
I do not confine myself to either vertical or horizontal first fold rollers as these may
be inclined to any position to suit the arrangement best attainable or most desirable
for other parts of the machine. Nor do I confine myself to the methods described
for imparting motion to the cutting and feeding cylinders to the type or form
cylinder to the folding rollers and blades or to the fly or conveyer as their several
motions may be respectively effected by many well known means in either part of
the invention above setforth.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
25th August 1883.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co Patent Agents,
Southampton Buildings, London. " IMPROVEMENTS IN PRINTING MACHINES OR
PRESSES A communication to me from abroad by John Thomas Hawkins, of
Taunton, Massachusetts, United States of America.
رو
This invention relates to printing presses and more particularly to that class of
printing machines commonly known as "perfecting presses."
The object of the said invention is to dispense with the curved stereotype plates,.
heretofore generally used upon the type-cylinders of "perfecting presses" and to
print perfected sheets from a continuous web of paper on the original type-forms,
and thus save the cost of the stereotype plant and the time necessarily consumed
in moulding and casting the stereotype plates from the original type forms after
being set up by the compositor the self-feeding, speed, and all the other advantages
of the perfecting press being at the same time preserved. It will be understood
by those skilled in the art that stereotype plates may be used upon the type
cylinders of these machines as well as original type forms, if desired. But there is
no advantage in putting stereotype plates on cylinders made large enough to carry
a number of forms for many impressions. The better practice is the common one
(where stereotype plates are used) that is, to secure such plates upon a smaller
cylinder and to multiply the number of cylinders carrying such forms so as to
conform to the number of the impressions required, instead of making one large
cylinder carry all the forms required for the several impressions.
The mere perfecting feature of printing from the roll a continuous web of paper
on both sides, at one operation, upon a cylinder provided with forms of type set
up by the compositor, instead of being stereotyped, is not new, but the means
which constitute the present invention are novel and impart great simplicity and
durability to the machines at a comparatively cheap cost of construction.
For facility of description and convenience of reference, this invention will be
divided into two parts, the first part of which consists in arranging the parts of the
machine as hereinafter described so that by means of feeding and cutting cylinders,
a type revolving cylinder, and two impression cylinders geared thereto at equal
surface velocities, the sheet of paper to be printed is cut from the web after its
seizure for the first impression, when, during the course of the said impression, it
is fed head first between the type-cylinder and the first impression cylinder, from
which it is taken and thence fed tail-first between a second form on the type
cylinder and the second impression cylinder, in the course of which operation it
receives the second impression on its opposite side, whence it is delivered as may
be required
In the accompanying drawings
Figure 1 is a side elevation of a machine embodying the first part of the said
invention.
Figure 2. is an end elevation of the same from the right hand side of Figure 1.
Figure 3 is a longitudinal vertical section on the line x, x, Figure 2, showing
only the principal moving parts in position and omitting the outlines of the frames,
the driving shafts and other parts for the sake of clearer illustration.
Figure 4, is a sectional view similar to that illustrated in Figure 3 and is
intended to illustrate the arrangement of the different parts when it is desired to
multiply the number of pairs of impression cylinders to be used with one and the
same type-cylinder and forms, requiring as is shown and hereinafter explained, a

page_text: separate set of cutting and feeding cylinders, a separate roll and web of paper,
and a separate folder or other delivery, as desired, to each pair of impression-
cylinders.
In the said Figures, the letters A, A, indicate the main frames of the machine
and the letter A the base plate. A shaft E is journalled in the said frames, which
shaft carries on one end the pinion E¹, and upon the other end the belt pulley E',
to which the necessary power, from any suitable source, is applied to impart
motion to all the different moving parts of the machine, the pinion E¹ engaging as
with the gear-wheel B³, secured to the type cylinder B, upon whose periphery
the type forms are secured in the ordinary manner. The impression cylinders C,
and D, respectively and successively impart the first and second impressions to the
sheets, and to each of the said cylinders is secured a gear-wheel, C¹ and D', which
wheels engage with the gear wheel B₁, upon the type cylinder B.. The gear
wheels CD are so proportioned that when the cylinders C, and D, are moved out
of contact with the type cylinder B, as hereinafter explained, the said gear wheels
will not pass entirely out of gear with the gear-wheel B¹. The shaft E carried in
suitable bearings upon the outside of one of the frames A, is actuated by the shaft
of the impression cylinder C through the intervention of the mitre wheels F, F³,
the vertical shaft F, journalled in suitable bearings projecting from one of the
frames A, and the bevel-wheels F" F". These wheels are so proportioned that the
shaft F makes one revolution for each revolution of the type cylinder B. The
vertical shaft G, journalled in one frame A, similarly to the shaft F, is driven by
the shaft F, through the intervention of a pair of bevel gear wheels G¹, G³, and
imparts motion to the lower cylinder of the pair of cutting and feeding
cylinders Go, Go, by means of the bevel-gear wheels G³, G, The said cutting and
feeding cylinders are geared together by a pair of spur gear-wheels G' and G³ and
the gear-wheels actuating them from the shaft F, are so proportioned as to give to
the cylinders G, G, such surface velocities as to deliver one severed sheet for each
revolution of the type-cylinder B. The Cylinder Go, has in its surface, parallel to
its axis, a recess or slot G10, and the cylinder Go has a serrated knife G¹¹, for
severing the sheets from the web in the ordinary and well known manner. The
roll of paper H, is carried on a shaft running in suitable bearings formed in the
frames A, from which shaft the web of paper H¹, is led to and between the
cylinder G³, and a binding or pressure roller G, also journalled in the frames, A,
and passing over the cylinder G³, and between it and the cylinder Ge is cut into
sheets of proper length by the knife G", as it is passed to the impression cylinder C.
The shafts H, H³, also journalled in the frames A, carry a series of tape
pulleys H8, H, upon which are driven the tapes H*, the said pulleys being driven
by the gear wheel G', through the interposed idler gear wheel H, and the gear-
wheel H' upon one end of the shaft H³, the idler gear-wheel H³, running upon a
stud secured to the inside of one frame A. The bridge fingers H°, are supported
in series upon a bar H", secured at each end to the frames A. The said fingers are
spaced across the press alternately with the tapes H, and their ends adjoining the.
cutting and feeding cylinders G5, G6, enter shallow grooves turned in the periphery
of the cutting cylinder G³, for the purpose of stripping the advancing edge of the
web of paper from the cylinder G³, after the preceding sheet has been severed
from it by the knife G". The other ends of the said fingers extend nearly to the
impression cylinder C, their upper surfaces leading nearly at a tangent to its upper
surface
Within the usual gaps or recesses in the impression cylinders C and D, are
ordinary gripers g and g¹, mounted, respectively, upon an ordinary griper shaft in
each cylinder. The said gripers seize each sheet at the proper time to receive the
impression as hereinafter explained and carry it through the impression when its
advancing edge is released. The sheet-lifter-fingers g³ g³, are spaced in series
alternately with the said gripers, and on the top of the free ends of the said
fingers the sheets lie, when clamped by the gripers. These gripers and lifter-fingers
are operated in the usual manner by cams attached to the frames A, and by arms

page_text: and rollers engaging with the said cams and secured to their respective shafts.
These cams are so placed and formed as to operate the gripers and lifter-fingers at
the proper times, respectively, to seize convey and deliver the sheets as hereinafter
explained. As the parts just mentioned are well known and form no part of this
invention they have, for the sake of clearness of illustration, been omitted from
the drawings. The impression cylinders C and D are journalled in eccentric
boxes C, D, (shown in dotted lines) which boxes are also journalled in the
frames A. Secured to the eccentric boxes C³, D2, are lever arms C³, D³, carrying
on their free ends rollers C, D, which rollers engage with a suitably formed
groove in each of the two box-cams c, c', secured upon the axis or shaft of the type
cylinder B; outside of the frames A. The cams c, c¹, levers C³, D³, with their
rollers C, D, and the eccentric boxes C, D, act together to bring each impression
cylinder alternately in contact with the type cylinder to make the impression
from its respective type form, and also to hold the impression cylinders out of
contact with the type cylinder when all portions of its periphery, save the said
type surface, are passing. the said impression cylinders. A pressure pulley or
binding roller J, is carried upon a shaft journalled in the frames A. Two or more
of these rollers may be set in such positions as to bear only upon the unprinted
margins of the sheet as it passes around with the impression cylinder C, after
having been printed on its first side. The said rollers serve to further convey the
sheet when its tail end has passed from between the type cylinder and the
cylinder C. A series of tapes J³, are driven by the gear-wheels J, and Jo, the
former running upon a stud attached to one frame A, and the latter secured to the
upper pulley-shaft of the tapes J³, a corresponding series of lower tape pulleys J5,
being journalled in brackets projecting from the frames A, which pulleys are driven
by the tapes J. To the rock-shaft K, journalled in the frames A, is secured an
arm K', which carries at its free end a roller K*. The said roller engages with the
groove of a cam K³, secured to the shaft F, which groove is so formed as to impart
a vibrating motion to the arm K¹. Secured to the rock shaft K, is a fly K',
formed with double fingers; and on pivots, secured to two or more of the said
fingers, the pulleys.K, run loosely, being driven by frictional contact with the
tapes J or with the interposed sheets, when the latter are passing between the
said tapes and the said pulleys. If desired, a series of tapes may also run upon
the pulleys K5, in which case the sheet in passing down between the double fingers
of the fly K, will be conveyed and guided by two series of tapes, one set or series
.on each side or surface of the sheet. To the rock shaft L, journalled in the
frames A, is secured the arm L, carrying on its free end the roller 'L', which roller
engages with the groove of a cam L³, secured to the shaft F, the said groove
being so formed as to give a vibrating motion to the arm L¹. To the central part
of the rock-shaft L is secured an arm L', to which is attached a folder-creasing
blade L. From a cross-bar L7, a series of bridge-fingers Le extend, in an inclined
position, to a sheet .stop L³, the said bar and stop being each secured to the
frames A; and serving as bearings for the folding rollers L°. The pair of folding
rollers L with the blade L', serve to make the first fold in the perfected sheet in
the ordinary and well known manner.
Motion is transmitted from the shaft F to the said folding rollers by means of
the screw gear-wheels L¹³, L secured respectively to the said shaft and to the
outer end of the shaft L, the said shaft having secured to its inner end a bevel
gear-wheel L", which engages with a corresponding gear-wheel L10, secured to one
of the folding rollers L⁹. Two or more pressure pulleys or binding rollers L¹³, are
carried upon a shaft L1, journalled in the frames A, which rollers serve a purpose
similar to that served by the pressure rollers J, that is, they ensure the passage of
the sheet down the inclined bridge-fingers L°, after the tail of the sheet has passed
from between the type cylinder B, and the impression cylinder D. In Figures 3
and 4, the circles R, R, indicate the positions in which the inking rollers may be
placed, the inking apparatus and arrangement being otherwise omitted, as the
complete inking apparatus may be arranged in any well known and suitable

page_text: manner. All folding mechanism requisite for imparting further folds in the sheets
has been likewise omitted as the arrangement of such mechanism must be
determined by the number and direction of the folds required. In Figure 4,
are shown a series of stationary stripper-fingers 8, and a series of bridge-fingers b,
for respectively stripping and leading the sheet from the impression cylinders
either to the fly or conveyor K, or to the folder knife L, to the latter where the
strippers 8, and bridges b, are shown leading to a series of fly fingers for conveying
the sheet through the considerable angle from the point shown to the vertical fold
rollers L, in which position the first fold is made from the left hand upper pair of
impression cylinders. It is obvious that from one pair to four pairs of impression
cylinders with as many rolls and webs of paper and either a folding or a flat
delivery may be used in several well known manners, as circumstances may require.
I do not, therefore, confine myself to the precise arrangement shown in Figure 4,
for bringing into use more than one pair of impression cylinders.
In the kind of press above described or whenever it is intended to secure type
upon the periphery of a cylinder, it is customary to secure the same in narrow
columns running parallel to the axis of the type cylinder, making it necessary in
the folding of a folio sheet to make its single fold parallel with the said coluinns
of type. In the machine illustrated in Figures 1, 2, 3 and 4 and above described,
the folding blade is arranged to fold in the ordinary manner a quarto sheet, in
which case the first fold is made transversely to the columns of type. When,
however, the machine is designed to fold only a folio sheet, the folder blade may
be arranged to operate at right angles to the arrangement shown, or in either
manner to suit the particular folds intended to be imparted to the sheets.
The complete operation of the machine is as follows that is to say:-the web of
paper H¹, passing under the pressure rollers Go, between the cylinders Go, and Go,
is fed forward upon the tapes H' by the action of the said cylinders to the point
at which the gripers of the cylinders C grasp its leading edge. Simultaneously
with this grasping of the sheet by the gripers g, the cutting knife G", comes into
position to sever, and at the proper time severs, the proper length of sheet from
the web H. The impression cylinder C now carries the severed sheet between
itself and the type cylinder B, the type form being properly placed upon the
cylinder B, to meet the passing sheet. This operation prints the first side, at the
conclusion of which the cylinder C, by the action of the cams c, c¹, is moved out of
contact with the cylinder B, until its proper type-form again arrives opposite to
the cylinder C, when it is again brought into contact with the cylinder B. The
gripers g are caused to open by suitable cams (not shown in the drawings as
hereinbefore explained.) After passing the pressure pulleys J and before passing
the points of the fingers K*, which lie close to the periphery of the cylinder C,
the lifter fingers g³, being raised simultaneously with the opening of the Baid
gripers. The head of the sheet is thus delivered upon the points of the fingers K
and the sheet thus passes down between the double fingers K' until it reaches the
bottom of the opening between them. Simultaneously with the arrival of the head
of the sheet at the bottom of the said opening, the fingers K*, are caused, by the
action of the cam K³, to vibrate to the right until the tail end of the sheet is laid
against the surface of the impression, cylinder D, at which time the gripers gl, of
the said cylinder are brought into position to close upon the said end and to carry
it between the cylinders D and B, on the latter of which the type-form for
printing the second side is suitably situated to meet the sheet, which at this time
is impressed between the cylinders B and D by the action of the cams c, c¹, as
above explained, thus printing the second side of the sheet. The gripers g', of the
cylinder D are caused to open and, simultaneously also, the lifter fingers g³, are
caused to lift, after passing the pressure pulleys L", and before passing the points
of the bridge fingers L. The tail (now the head) of the sheet is thus passed upon
and down the inclined bridge fingers L°, under the folder blade L', when upon the
arrival of the sheet at the sheet stop L³, the said folder blade, through the instru-
mentality of the cam L³, and its connections already described, makes the first fold

page_text: in the paper which then passes through the successive folds, the latter being
imparted to it in any desired manner, as above explained.
It is not essential to the machine above described that the sheets be folded at
all; and in place of the fold rollers L' and blade Lo, the ordinary vibrating fly, or
any other suitable device, may be used and operated. in any suitable manner from
the shaft F to deliver the sheets flat upon a suitable board or table, the fingers of
such fly in that case occupying the place of the bridge fingers L while receiving
the sheet.
The second part of the said invention consists essentially in so arranging the
parts of the machine, that, by means of one or more pairs of feeding and cutting
cylinders, a type revolving cylinder and one or more pairs of impression cylinders
geared thereto at equal surface velocities, the sheets of paper to be printed are first
cut from the web or webs, when, during the first impression, they are fed head
first between the type cylinder and the first impression cylinder from which the
heads of the sheets are projected during the said impression, at the end of which
their tail-ends are directly delivered from the first impression cylinder (or cylinders
where more than one is used) to the gripers of the second impression cylinder or
cylinders.
In the accompanying drawings
Figure 5, is a side elevation of a machine embodying the second part of the said
invention, and
Figure 6 is an end elevation of the same, partly in vertical section on the line x, x
Figure 5.
Figure 7 is a longitudinal vertical section through the centre of the machine,
omitting the outlines of the frames, and all the devices for transmitting motion to
the several moving parts of the machine, for the purpose of more clearly illustrating
the relative positions of the principal moving parts.
Figure 8, shows, in transverse section drawn to an enlarged scale, the pair of
impression cylinders on the left hand side in Figures 5 and 7.
Figure 9 is an elevation, also drawn to an enlarged scale, of the ends of the said
cylinders, with the framing of the machine broken away to exhibit the mechanism
which imparts motion to, and the operation of, the gripers and sheet lifter fingers
in taking the sheets from the web, delivering the same to the first impression
cylinder, from the said cylinder to the second impression cylinder, and thence
delivering it to the folder or other delivery attachment.
Figure 10, is a sectional view similar to Figure 7, illustrating some of the
principal parts and the manner of multiplying the number of pairs of impression
cylinders and arranging the same about or around a single type cylinder
In the said Figures, the letters A, A, indicate the main frames of the machine
and the letter A¹ the base plate.. A shaft E is journalled in the said frames which
shaft carries on one end the pinion E', and upon the other end the belt-pulley E³
to which the necessary power from any suitable source is applied to impart motion
to the different moving parts of the machine; the pinion E engages with the gear
wheel B¹, secured to the type cylinder B, upon whose periphery the type-forms f; f
are secured in the ordinary manner. The two pairs of impression cylinders C, c,
C¹, c¹, respectively and successively impart the first and second impressions to the
sheets, and to each of the said cylinders is secured a gear-wheel. These gear-
wheels C³, C³, c³, c³, severally engage with the gear-wheel B¹, upon the type
cylinder B. The said gear-wheels are so proportioned that when the cylinders
C, c C¹, c¹, are moved out of contact with the type cylinder B, as hereinafter
explained, they will not pass entirely out of gear with the gear wheel B¹. The
shaft F, mounted in suitable bearings in one of the frames A, is actuated by the
shaft of the type cylinder B, through the intervention of the bevel-wheels F³, F³,
the vertical shaft F', journalled in suitable bearings projecting from one of the
frames A, and the bevel wheels F', F³. These several wheels are so proportioned
that the shaft F makes one revolution for each revolution of the type cylinder B.
The vertical shafts G, g, journalled in one frame A similarly to the shaft F¹, are

page_text: respectively driven by the shatt F, through the intervention of the pairs of bevel
wheels G', G², and gl, g², and impart motion to the lower cylinders of the two pairs
of cutting and feeding cylinders G³, Gº, g³, g, by means of the second pairs of
bevel wheels G³, G, g, g, The said pairs of cutting cylinders G5, G6, 95 96, are
each geared together by the pairs of gear wheels G7, G³, 97, 98, secured to their
axes, and the gear-wheels actuating them from the shaft F, are so proportioned as
to give to the cutting and feeding cylinders G³, G6, g³, gº, such surface velocities as
to deliver one sheet for each revolution of the type cylinder B. The cylinders
G³, g, have in their surfaces, parallel to their axes, slots or recesses G10, 910, and the
cylinders Go, go, have each a serrated knife G", gu, for severing the sheets from the
webs in the ordinary and well known inanner.
The rolls of paper H, h, are carried on shafts running in suitable bearings in the
frames A, from which the webs of paper H³, h', are led to and between the cylinders
G³, g³, and the pressure rollers G³, 9ª, also journalled in the frames A, and, passing
over the cylinders G³, 95, and between them and the cylinders G, 98, are cut into
sheets of proper length by the knives G", gl as they are passed to the impression
cylinders C, c. The shafts H2, H3, h³, h, also journalled in the frames A, each
carry a series of tape pulleys H8, H9, h³, h, upon which are driven the tapes H*, h*,
the said pulleys being driven by the gear-wheels G7, 97, through the interposed
idler pinions H³, h, and the gear wheels H7, h, on the ends of the shafts H³, h³, the
idler gear-wheels H³, h running upon studs secured to the inner sides of the
frames A. The two series of bridge-fingers H10, 10, are supported upon the cross-
bars H, h, secured at their ends to the frames A. The said fingers are spaced
across the press alternately with the two series of tapes H, h, and their ends
adjoining the cutting cylinders G³, 9³, enter shallow grooves turned in the
peripheries of the said cylinders for the purpose of stripping the advancing-edges
of the webs of paper from the cylinders G³, g, after the preceding sheets have
been severed from their respective webs by the knives G", g". The other ends of
the bridge fingers.Ho, ho, extend nearly to the impression cylinders C, c, to the top
of the former and bottom of the latter and lie nearly at a tangent to the surfaces
of the said cylinders.
The impression cylinders C, C¹, c, c' revolve upon the shafts D, which are
journalled eccentrically in the frames A and to whose ends are secured the arms D¹,
each carrying a roller D2 engaging with suitably formed grooves D³, in the box-
cam D, which is secured to one end of the axis or shaft of the type cylinder B.
The grooves in the said cam are two in number, one on each side of the cam, and
two of the four rollers D³, run in each of the said grooves. The arrows in Figure 6
surrounding the shafts D, indicate the directions in which the cylinders c, c',
respectively rotate. This arrangement of eccentric shafts is for the purpose of
bringing each of the impression cylinders C, C¹, c, c¹, in contact with the type
cylinder B at the proper times (when their respective type forms secured to the
said type cylinder are passing) and it also keeps the said impression cylinders out
of contact with the type cylinder during the revolution of the remaining portions
of the said cylinder's surface. The cylinder gripers P, p, are of the usual form, and
seize the sheets and hold them in contact with their respective impression cylinders
until the leading edges of the sheets have passed through the impression.
sheet-lifter fingers P¹, p', upon which the leading edges of the sheets are clamped
by the gripers P, p, are spaced alternately with the said gripers, throughout the
length of the cylinder in the usual manner. The sheet lifter fingers P³, p³, are
situated upon the impression cylinders C, c¹, so that their points lie under the tail
margin of each sheet, the said margins being made to overhang the impression
surfaces of the cylinders sufficiently for that purpose
'The
The shafts P, p, upon which the gripers P, p, are spaced and secured, have each
secured to one end the segmental gear-wheels or sectors P7, and the arms P³,
carrying rollers P are pivotted on the ends of the cylinders C, C', c, c',. The said
arins have formed upon their free ends the sectors or gear-wheels P", engaging with
the sectors P. Pivotted to the inner enda of the studs upon which the rollers P

page_text: run, are the rods Peach carrying a collar Pº and a spring P™ the free ends of the
rods Ps passing through lugs P" attached to the cylinder heads.
To the shafts P, p", on which the sheet lifter fingers P¹, p¹, are spaced and
secured, are fixed at one end the arms P¹³ carrying rollers P, the shafts P¹, pla
being surrounded in part by a helical spring (not shown in the drawing) so acting
as to keep the points of the sheet lifter fingers pressing tightly upon the cylinder
when not lifted, as hereinafter explained. The cams P15, secured to the inner side
of the frames A acting upon the rollers P1, cause the sheet lifter fingers P', p¹, to
elevate the head of the sheet from the respective impression cylinders simultaneously
with the opening of the gripers P, p. The shafts Pie, p18, in the cylinders C, c¹,
only carry the lifter fingers P³, p³, herein before described as lying under the
overhanging margins of the sheets.
The levers P, secured to one end of the shafts P16, 216, carry rollers P¹³, which
engage with cams P¹³, so placed upon the inner side of the frames A, as to cause
the tails of the sheets to be elevated at the proper times to allow of their being
seized by the gripers P, p, of the cylinders C₁, c. Referring to Figures 5 and 9 the
cams Po, po, are secured to the inner side of the frames A which are, in Figure 9,
broken away to show the said cams engaging with the rollers P, on the sector
levers P, which cams are so formed and placed as to open and close the cylinder
gripers at the proper times for releasing and griping the sheets. On the shaft F,
are two cams N, n, engaging with the rollers N₁, ni, attached to the rods N³, n²,
which are forked at their lower ends to embrace the shaft F. The upper ends of
the rods N³ n², are connected to the levers N³, n³, which are secured to two
shafts N, n. The shaft N' carries a series of strippers N5, spaced across the
machine so as to alternate with the gripers P and lifter fingers P¹. On two of the
strippers No, are carried two rollers N6, set so as to roll upon the unprinted
margins of the sheets. On the shaft n' is a pair of arms carrying rollers no set
in the same manner as are the rollers No, so as to roll upon the unprinted margins
of the sheets only. The cams N, n are so formed and adjusted on the shaft Fas
to cause the points of the stripper fingers, Ns to lie close to the cylinder C and at
the same time to keep the rollers Ne, in contact with the tapes running upon the
shafts No, and their pulleys, when the sheet is being delivered from the cylinder C,
and to make the rollers no, perform the same functions for the cylinder c. The
cylinder c requires no stripper fingers to correspond with those on the cylinder C,
the bridge fingers n", serving that purpose, for the reason that the sheets come
from the top of the cylinder c, but from the bottom of the cylinder C. Upon the
shaft F, are secured two box-cams S, 8, having suitably formed grooves engaging
with the rollers S', 8', attached to the rods S 83, each rod having its free end
bifurcated to embrace the shaft F. The rods S* &, are connected to the lever
arms S³ ³, secured to the rock-shafts S 8, journalled in the frames A. Attached
to the said rock shafts. are the folder blades S 8, which through the instru-
mentality of the cams S 8, and their connections just described are caused to crease
and enter the delivered sheets between the first pair of folding rollers to make the
first fold upon the arrival of the sheets at the proper place to receive such folds.
The stripper and bridge fingers T, t, are secured respectively to cross bars T3 Tº,
and to the single and similar bar t³. The bridge fingers t have alternating with them
the tapes t' carried on pulleys on the shafts to t, and driven from the gear wheel c³,
by the pinion to and the intermediate pinion t. The folding rollers V v, at which
the first fold is made are actuated from the shaft F, through the bevel gear-
wheels V' v, V2, V3 v³, the vertical shafts V and the horizontal shafts V5 v³.
In Figure 7, the positions to be occupied by the inking rollers for each pair of
impression cylinders are indicated by the letters R R, r, r, and in Figure 10 for
the third pair of cylinders by the figures 12 12, &°. In Figures 5 and 6, all that
relates to the griper and sheet lifter fingers is omitted being very clearly shown,
drawn to an enlarged scale, in Figures 8 and 9 and in section in Figures 7 and 10;
all the inking apparatus, except the positions of the form-rollers, indicated by the
letters RR, r, r, and 12, 12, & is also omitted.

page_text: Figure 10 snows the arrangement of the principal parts in outline and section
when three pairs of impression cylinders are used to print from three rolls or webs
and deliver to three folders. In this Figure, the folder blades S 8, for the
cylinders C, C¹, c c¹, each form one finger of the two sets of fly fingers Tt, which
convey the sheets to the fold-rollers Vv, the 'stripper and bridge fingers N' n",
serving to direct the sheets thereto. In this Figure, the third pair of impression
cylinders and their concomitant parts are indicated by numbers, as follows; that
is to say; 1, 2 the impression cylinders, 3. the roll of paper; 4, 5, the cutting and
feeding cylinders; 6, the feed and conveying tapes; 7 the stripper fingers to
cylinder 1; 8 the stripper fingers to cylinders 2; 9, the conveying tapes from
cylinder 2; 10, the folding rollers; and 11 the folding blade. The other two pairs
of impression cylinders and concomitant parts are lettered in conformity with the
other Figures.
It is not intended to limit this system to three pairs of impression cylinders to
one type cylinder, as any number of such pairs may be used, each with their own
webs of paper, folding apparatus, and other parts, by means of the arrangement of
parts shown in the several Figures, or equivalent parts. In all the Figures all the
parts of the folding apparatus beyond those necessary for making the first fold are
omitted, as unnecessary to be shown here; such parts in practice being arranged in
well known manners to suit the number and direction of the folds required to he
made. It is not essential to this part of the present invention that the delivered
sheets shall be folded; they may be delivered flat when desired by substituting,
for the several folders used, as many vibrating flies, and receiving tables as may be
required. The directions of rotation of the several cylinders are indicated by the
arrows clearly delineated in the drawings.
The complete operation of this part of the said invention is as follows that is tɔ
sayThe webs of paper H¹¹, are fed from the rolls H h, by the pressure
rollers G³ go, and by the cutting and feeding cylinders Go Go, gs ge, until the leading
edge of each web reaches the proper position to be seized by the gripers of the
cylinders Cc, the gripers of the former upon its upper side and those of the latter
upon its lower side." Simultaneously with the closing; of the gripers of the
cylinders C and c, upon the leading edges of the webs, the cutting knives G" gl
sever the sheets from the webs. The cylinders C c, at such times are caused to
come in contact with the type-form, when the first side of each sheet is printed.
It is to be understood, however, that these operations are not simultaneously
performed by the two pairs of impression cylinders, but that they are so timed as
to meet the forms as they are rotated upon the type cylinder B. The gripers of
the cylinders C c are caused to open and release the sheets at the proper times for
their leading edges to be stripped from the said cylinders by the strippers N5
and n. The heads of the sheets now pass on the tapes N7 n', and bridge-fingers.
Nn, being propelled by the rollers Ñ ne until each pair of cylinders reaches
the position shown in Figures 8 and 9, the cylinders C c, having been meanwhile
moved out of contact with the cylinder B, when the end of the impression was
reached, through the action of the cam D, and the excentric shafts D. In the
positions indicated by the Figures 8 and 9, the propelling rollers No.n, through
the action of the cams N n, release the sheets so that they may be drawn back
under the said rollers. At this time the sheet lifter fingers P² p', of the cylinders C c',
will have lifted the tail margins of the sheets over against the adjoining
cylinders Cc, whose gripers are at this time caused to close as hereinbefore
described, their motion and velocity being such that their points have a greater
velocity in the direction in which the adjoining surfaces of the cylinders Cc, are
travelling, that is, in the opposite direction to that of the cylinders C₁ c¹,. carrying
the said gripers, thus enabling the gripers of the cylinders C c', to pass behind the
lifted tail margins of the sheets and clamp them, tail first, to the said cylinders.
The cylinders C¹ c' are now brought in contact with the type cylinder B, as
above explained for the cylinders Cc, and the second sides of the sheets are thus
impressed and printed as the proper form is presented by the rotation of the

page_text: cylinder B. The gripers of the cylinders C¹c¹, are now caused to open and the
sheet lifter fingers to elevate the now advancing, but previously tail, edge of the
sheet upon the stripper fingers T t, and the sheets are then conveyed to the folding
rollers V v, the first fold being made in a vertical position for the cylinders C c³,
and horizontally for the cylinders C, o¹.
I do not confine myself to either vertical or horizontal first fold rollers, as these
may be inclined in any position to suit the arrangement best attainable or most
desirable for other parts of the machine. Nor do I confine myself to the methods
shown for imparting motion to the cutting and feeding cylinders, to the type or
form cylinder, to the folding rollers and blades, or to the fly or conveyor K, as
their several motions may be respectively effected by many well known means in
either part of the invention above set forth.
Having thus fully described the said invention as communicated to me by my
foreign Correspondent, and the manner of performing the same, I wish it understood
that I claim.
First A perfecting printing press, having combined therein a type-revolving
cylinder, two impression-cylinders arranged so as to respectively make contact
with, and avoid, alternate forms on the said type-cylinder, a pair of cutting and
feeding cylinders and a suitable conveyor for receiving a printed sheet, head first,
from the first impression-cylinder and delivering the same tail first to the second
impression-cylinder, whereby the sheets are first cut from the web and then
successively printed upon opposite sides, substantially as, and for the purposes, set
forth.
Second In a printing press, in combination with a type-revolving cylinder
provided with forms for printing both sides of a sheet, two impression-cylinders
arranged relatively to the said type-cylinder to respectively make contact with,
and avoid, alternate forms thereon, so that the sheet is received head first upon the
first impression-cylinder to print the first side and then tail first upon the second
impression-cylinder to print the second side, substantially as, and for the purposes,
set forth.
Third In a printing press, the combination of a type-revolving cylinder, two
impression-cylinders arranged so as to respectively make contact with, and avoid,
alternate forms on the said type cylinder, and a vibrating fly for receiving a
printed sheet head first from the first impression-cylinder and delivering the same
tail first to the second impression-cylinder, whereby the sheets are successively
printed on opposite sides, substantially as, and for the purposes, set forth.
Fourth In a printing press, in combination with a type-revolving cylinder and
two impression-cylinders, a fly-frame consisting of a double set of fingers, within
or between which fingers the sheet is caused to pass from the first impression-
cylinder and therein to rest awhile, being conveyed to the second impression-
cylinder, substantially as, and for the purposes, set forth.
Fifth In a printing press, in combination with a type-revolving cylinder and
an impression-cylinder, a fly frame consisting of a double set of fingers and
provided with a series of pressure pulleys pivotted to one set of the said fingers and
in frictional contact with a series of conveying tapes or rollers, whereby the sheet
is received head first from the impression-cylinder and delivered tail first,
substantially as, and for the purposes, set forth.
Sixth In a printing press, in combination with a type-revolving cylinder
provided with forms for printing both sides of a sheet, a pair of impression-
cylinders for printing opposite sides of a sheet, arranged relatively to the said
type-cylinder, so that when either of the said cylinders is imparting an impression
in contact with the type-cylinder, the other of the said cylinders is held out of
contact with the type-cylinder, sul.stantially as, and for the purposes, set forth.
Seventh In a printing press, the combination of a type-revolving cylinder and
two impression-cylinders, the said impression cylinders being provided with
excentric journal-boxes and arms secured thereon, and the said type-cylinder being
provided with cams on its axis or shaft constructed so as to actuate the said arms,

page_text: whereby, when the type-cylinder rotates, each impression-cylinder is alternately
brought into contact with a type-surface on the type-cylinder and thrown out of
contact therewith, substantially as, and for the purposes, set forth.
Eighth. A perfecting printing press having combined therein a type-revolving
cylinder, one or more pairs of impression-cylinders, one pair or a corresponding
number of pairs of feeding and cutting cylinders and suitable sheet-guides or
conveyors, whereby each sheet is cut from its web and conveyed head first to a
first impression-cylinder and then by the said cylinder delivered tail first directly
to the gripers of a second impression-cylinder, thereby perfecting the printing of
the sheets, all substantially as set forth.
Ninth. In a printing press, the combination of a type-revolving cylinder, a pair
of impression-cylinders, a set of stripper-fingers, a set of controlling rollers and a
set of bridge-fingers and conveying tapes, whereby the free end or head of the
out-travelling sheet is directed and conveyed away from the first impression-
cylinder until its tail end is seized by the gripers of the second impression-cylinder
and the direction of its motion reversed for printing the second side of the sheet,
all substantially as set forth.
Tenth. In a printing press, in combination with a type-revolving cylinder and
means substantially as described for receiving and directing the head of the sheet
while the first impression is being made, one or more pairs of impression-cylinders,
the first impression-cylinder in each pair being provided with one set of gripers
and two sets of sheet-lifter-fingers and the corresponding second impression-
cylinder being provided with one set of gripers, whereby the first impression-
cylinder is caused to first discharge the head of the sheet by means of one set of
sheet-lifter-fingers and then to deliver the tail of the sheet directly to the gripers
of the second impression-cylinder by means of the other set of sheet-lifter-fingers,
substantially as, and for the purposes, set forth.
Eleventh In a printing press, in combination with a type-revolving cylinder,
one or more pairs of impression-cylinders arranged to revolve so that their
adjacent surfaces shall run in opposite directions, the gripers upon the second
impression-cylinder of each pair being so timed in their action as to take the tail
of the sheet directly from the corresponding first impression-cylinder, after the
first side of the sheet has been printed, for the purpose of imparting the second
impression, substantially as set forth.
Twelfth. A printing press having an impression-cylinder provided with two sets
of sheet-lifter-fingers, one set for raising the head of the sheet preparatory to its
delivery and the other set for raising the tail of the sheet preparatory to its
delivery, substantially as, and for the purposes, set forth.
In witness whereof I the said William Robert Lake have hereunto set my
hand and seal this seventeenth day of August in the year of our Lord One
thousand eight hundred and eighty three.
WH PORT LATE Gal