Improvements in Perfecting Printing Presses.
Year: 1894

page_text: Date of Application, 29th Nov., 1894
Complete Specification Left, 23rd Aug., 1895-Accented, 28th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in Perfecting Printing Presses.
I, HENRY PAUL FEISTER, Mechanical Engineer, of 506 and 508 East North
Street, in the City and County of Philadelphia, and State of Pennsylvania,
United States of America, do hereby declare the nature of this invention to be as
follows:-
My improvements relate especially to a class of perfecting printing presses
adapted to cut, print and assemble sheets of paper in pamphlet form from a
continuous web of paper, substantially in the manner disclosed in Letters Patent
No. 11,953, granted to me and dated September 20, 1886.
The invention forming the subject matter of the present application relates more
particularly to the details of an organized perfecting printing press and
comprehends among other things the following features:
First: The arrangement of the two printing and impression cylinders in the
form of an in which one printing cylinder and two impression cylinders are
arranged in a substantially horizontal position and at a lower portion of the
frame so as to cause the center of gravity of the entire machine to be as low as
possible.
Second Details of improvement in the means employed on the printing
cylinders for holding the type plates in position upon the surface of the cylinder,
the said improvements comprising a series of circumferential dovetail or undercut
grooves extending over the type beds of the cylinder, and combined with locking
pieces adapted to the said dovetail grooves for holding the type forms in proper
relative position, a permanent plate at one end of each of the frame beds against
which the type forms are held. a movable locking plate adapted to hold the
locking pieces positively in the grooves when the type forms are in position, and
cam bars or locking pieces for locking the movable locking plates in position.
Third: Certain features of construction comprising the nippers of the impression
cylinders whereby they may properly receive the sheets and transfer them from
one cylinder to the other, and subsequently deliver the sheets in printed condition.
The said improvements comprehend the usual pivoted uppers operated by cam
devices combined with a pivoted frame carrying pin points in connection with the
ends of the nippers operated to hold the paper sheets, and cam devices for holding
the said pin frames in operative position, said frames being made movable so as to
properly permit the tympan or movable plate being adjusted to the impression
surfaces and the proper position of the pin points assured.
Fourth Improvements in the perforating and cutting cylinders for the purpose
of perforating the webs of paper at the proper distance apart to compensate for
different sizes of sheets required in the printed pamphlet.
Filth Improvements for the detaching of the perforated web into sheets at a
time substantially com ident with the taking of the forward edges of the sheets by
the nippers of the impression cylinders.
Sixth Improvements in the assembling and delivery devices for the several
sheets whereby the successive sheets may be successively assembled upon a cylinder
through the media of nippers and then delivered by a transferring cylinder
arranged between the assembling cylinder and folding devices, and cam devices for

page_text: independently operating the nippers of said cylinders first for assembling the
sheets, then for opening the nippers for the purpose of delivering the assembled
sheets to the delivery cylinder, and finally for delivering the sheets to the folding
devices.
Seventh Improved folding devices adjustable relative to the fly frame so as to
permit the proper adjustment of the sheets under the folding knife to compensate
for sheets of different sizes which may be printed upon the machine.
:
Eighth Cleaning devices for cleaning the impression surfaces of the second
impression cylinder, so as to prevent blurring of the first impression.
In carrying out my invention I employ two impression cylinders and two
printing cylinders geared to run at the same surface speed, with the two impression
cylinders and one of the printing cylinders arranged in the same level, and the
remaining printing cylinder at a higher level above one of the impression cylinders,
together with feeding devices for feeding sheets of paper to one of the impression
cylinders, delivering devices for receiving the sheets from the other impression
cylinder, and a supporting frame for sustaining the several cylinders in the relations
specified.
In connection with the impression and printing cylinders I employ means to feed
the web of paper to the first impression cylinder and perforate it transversely at
definite places in its length, together with detaching devices for breaking the
perforated web into sheets prior to its passage between the first impression and
printing cylinder, and assembling devices for assembling the printed sheets after
they pass between the two impression cylinders and the printing cylinder. In
connection with these devices folding devices may be employed for folding the
assembled sheets into book or pamphlet form.
My invention also includes the employment with an impression and printing
cylinder of the same diameter geared together to run at the same surface speed,
perforating cylinders arranged above the impression cylinder, feeding rolls upon
each side of the perforating cylinders guide rolls to guide the roll of paper from
above the cylinders to the feeding rolls, and a uetaching device for detaching the
perforated web into sheets arranged above the perforating cylinder and substantially
intermediate of it and the printing cylinder with gearing between all of the rolls
and cylinders for making them move at definite speeds, and also changeable speed
gearings to vary the speed of the feeding rolls and perforating cylinders
relatively to the surface speed of the impression and printing cylinders. The
perforating cylinders or rolls may be made adjustable as to their diameters for
the purpose of varying the distance between the transverse perforations made in
the web of paper.
My invention also includes the construction of the perforating cylinders, of two
sbafts each having adjustably secured to them radially adjustable shaped bars in
which the bars of one of the cylinders is provided with grooves on diametrically
opposite sides and the bars of the other cylinder with perforating cutters or blades,
and a series of spring fingers on each of the cylinders arranged upon each side of
the grooves and perforating blades whereby the paper is held upon each side of the
line of perforation during the perforating and the distance between the perforations
is adjustable.
The sheet detaching device which I use for separating and perforating the web
into sheets consists of a revolving shaft arranged close to the surface of the
perforating cylinder and provided with a surface of leather or other soft material
adapted to pinch the sheet to the impression cylinder for an instant.
My improved impression cylinder is provided with a series of impression surfaces
or beds upon its periphery, a series of nippers arranged at the forward end of each
of the beds, and a series of adjustable transverse frames also arranged at the
forward part of each of the beds in combination with power devices for operating
the nippers at predetermined intervals. The frames may have pins projecting
outwardly upon which the paper sheets are clamped, and the pins upon the beds may
be carried upon laterally adjustable parts.

page_text: The impression cylinder may be provided with an adjustable frame at the forward
part of the bed adapted to receive the rear or free ends of the nippers, and this
frame may be adjustable to move the pins which are carried by it into proper
adjustment with relation to the forward part of the bed.
an
My invention includes the combination with the printing cylinders of
assembling device for assembling the printed sheets. delivering devices for
delivering the assembled sheets, folding devices for folding the assembled sheets
delivered by the delivering devices, and a ljusting devices may be employed for
adjusting the folding devices relatively to the delivering devices so that the line
upon which the sheets are folded may be varied as desired.
In connection with the second impression cylinder I employ a wiping roll or
cylinder adapted to clean the surface of the said second impression cylinder before
it receives the sheet from the first impression cylinder, with a pressure device for
pressing the wiping roll or cylinder towards the impression cylinder with an elastic
pressure.
My preferred printing cylinder is provided with a series of parallel circum-
ferential dovetail or undercut grooves with transverse abutments secured to the
surface of the cylinder against which the type plates are adjusted, interme liate
clamping blocks adapted to the circumferential grooves to clamp the type forms
firmly to the surface of the type beds of the cylinder, and means to apply pressure
upon the clamping blocks and press them towards the transverse abutments to hold
the several parts firmly in position, with these devices may be employed a shaft
provided with cam projections adapted to press upon the clamping plate at
intervals in its length, and a device for adjusting the cam shaft and locking it in
position.
The assembling device for assembling the sheets may consist of a revolving
cylinder provided with a series of projecting pins, a series of nippers working in
connection with said pins, a rock shaft to operate the nippers simultaneously, cam
devices to open the nippers at predetermined intervals, cam devices for operating
the nippers to remove them from the assembled sheets after a definite number of
revolutions have been made, and power devices for throwing the last mentioned
cam device into and out of operation at specified intervals.
My invention also includes the employment of a folding device for folling the
sheets, of creasing devices for imparting a pressure to the folded paper sheets and
means acting upon the creasing devices for removing the pressure after the crease
has been made so that the folded sheets may be fed through the folding devices
without blurring their printed faces.
Dated this 29th day of November 1894.
HENRY P. FEISTER.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
Improvements in Perfecting Printing Presses.
I, HENRY PAUL FEISTER, Mechanical Engineer, of 506 and 508 East North
Street, in the City and County of Philadelphia, and State of Pennsylvania, United
States of America, 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 :-
My improvements relate especially to a class of perfecting printing presses
adapted to cut, print and assemble sheets of paper in pamphlet form from a
continuous web of paper, substantially in the manner disclosed in Letters Patent
No. 11,953, granted to me and dated September 20, 1886.

page_text: The invention forming the subject matter of the present application relates more
particularly to the details of an organized perfecting printing press and comprehends
among other things the following features:
First: The arrangement of the two printing and impression cylinders in the
form of an in which one printing cylinder and two impression cylinders are
arranged in a substantially horizontal position and at a lower portion of the
frame so as to cause the center of gravity of the entire machine to be as low as
possible.
Second: Details of improvement in the means employed on the printing cylinders
for holding the type plates in position upon the surface of the cylinder, the said
improvements comprising a series of circumferential dovetail or undercut grooves
extending over the type beds of the cylinder, and combined with locking pieces
adapted to the said dovetail grooves for holding the type forms in proper relative
position, a permanent plate at one end of each of the frame beds against which the
type forms are held, a movable locking plate adapted to hold the locking pieces
positively in the grooves when the type forms are in position, and cam bars or
locking pieces for locking the movable locking plates in position.
Third: Certain features of construction comprising the nippers of the impression
cylinders whereby they may properly receive the sheets and transfer them from
the cylinder to the other, and subsequently deliver the sheets in printed condition.
The said improvements comprehend the usual pivoted nippers operated by cam
devices combined with a pivoted frame carrying pin points in connection with the
ends of the nippers operated to hold the paper sheets, and cam devices for holding
the said pin frames in operative position, said frames being made movable so as to
properly permit the tympan or movable plate being adjusted to the impression
surfaces and the proper position of the pin points assured.
Fourth Improvements in the perforating and cutting cylinders for the purpose
of perforating the webs of paper at the proper distance apart to compensate for
different sizes of sheets required in the printed pamphlet.
Fifth Improvements for the detaching of the perforated web into sheets at a
time substantially coincident with the taking of the forward edges of the sheets by
the nippers of the impression cylinders.
Sixth Improvements in the assembling and delivery devices for the several
sheets whereby the successive sheets may be successively assembled upon a cylinder
through the medium of nippers and then delivered by a transferring cylinder
arranged between the assembling cylinder and folding devices, and cam devices for
independently operating the nippers of said cylinders first for assembling the
sheets, then for opening the nippers for the purpose of delivering the assembled
sheets to the delivery cylinder, and finally for delivering the sheets to the folding
devices.
Seventh Improved folding devices adjustable relative to the fly frame so as to
permit the proper adjustment of the sheets under the folding knife to compensate
for sheets of different sizes which may be printed upon the machine.
Eighth Cleaning devices for cleaning the impression surfaces of the second
impression cylinder, so as to prevent blurring of the first impression.
Aside from the foregoing there are other details of improvement which will be
more fully understood by reference to the accompanying drawings in which:
Fig. 1 is a side elevation of the perfecting printing press embodying my
improvements;
Fig. 2 is an end elevation thereof;
Fig. 3 is a cross section through the perforating cylinders taken on line 4-1 of
Fig. 4;
Fig. 4 is a plan view of one of the perforating cylinders;
Fig. is an elevation of one of the type foim cylinders, with a portion in
section;
Fig. 6 is a cross section of one half of said cylinder on line firm fi of Fie 5 ·

page_text: Fig. 8 is a perspective view showing the manner of arranging the type forms
an locking pieces on the impression cylinder;
Fig. 9 is an end elevation of one of the locking blocks;
Figs. 10 and 11 are perspective views of two of the locking pieces or blocks for
the type forms;
Fig. 12 is a cross section on line 2-2 of Fig. 13, showing the details of the
nipper devices of the impression cylinders;
Fig. 13 is a cross section on line 1-1 of Fig. 12, illustrating the nipper arranges
mments of the impression cylinders;
Fig. 14 is an enlarged side elevation of one of the impression erlinlers and th:
adjacent impression and type cylinders, assembling and folding devices:
Fig. 15 is a diagrammatic illustration of my improved printing press showing
the movement of the paper over the machine, and certain of the devices necessary
for the manipulation at the machine trom the reverse side of that inlicated in
Fig. 1;
Fig. 16 is a sectional side elevation of the assembling devices taken on line 3-3
of Fig. 17;
Fig. 17 is a plan view of one end of same showing the cam operating devices;
Figs. 18, 19, 20 and 21 are transverse sections of the assembling and delivery
cylinders, showing the manipulations of the nippers during the assembling anl
delivery operations;
Fig. 22 is a front elevation of the assembling devices ;
Fig. 23 is a side elevation of the adjusting devices for the folding mechanism ;
Fig. 24 is a cross section of same on line 5-5 of Fig. 23; and
Fig. 25 is a cross section of the sheet detacher.
Figure 26 is a retaining rack hereinafter described.
A is the main frame of the machine. B are the perforating cylinders. B, B are
the pairs of teeding cylinders for the paper, C¹ the first impression cylinder, C the
first type cylinder, D₁ the second impression cylinder and D the second type
cylinder. E is the assembling device. G is the folding mechanism, and II is the
packing device for the completed pamphlets.
The paper web Z is fed from a roll of paper in the usual manner and guided
over the guide rolls B to the feeding rolls B. From the feeding rolls the paper
passes over the perforating cylinders B, and the perforated web next passes between
the feeding rolls B and thence to the nippers of the impression cylinder C. The
perforating cylinders B are clearly illustrated in Figs. 3 and 4, and they consist of
two separate cylinders B1 and B2, suitably geared together as is customary, and
each conprising a central shaft B³ preferably rectangular in cross section, and
provided with two radially adjustable frames B having radial slots b through which
suitable clamping bolts or screws passes for holding the frames B in proper
adjustment on the central shaft B³. In both of these cylinders the frames B3 are
essentially shaped in cross section and the outer surfaces or those which are
adapted to move in contact with the corresponding cylinder are preferably made
curved and are provided with a series of spring fingers arranged in two rows as
clearly indicated in the drawing. The outer ends of which fingers are curved or
rounded for the purpose of holding the sheet of paper without injury while the
perforation takes place. The spring fingers of the two cylinders B1, B2 work in
pairs as indicated in Fig. 3, so that the paper is held immediately upon each side
of the perforating blade or cutter B' of one cylinder and the recess B of the other
cylinder into which the perforating blade enters. The perforating blade B' is
made with a series of teeth in the usual manner so that it does not completely sever
the web of paper but perform a series of perforations which permits the paper to
be readily detached. The perforating cylinders are thus made adjustable so as to
provide different diameters to suit sheets of different lengths. The different
diameters being necessary so that the perforating devices may be moved with a
speed commensurate with the movement of the sheet and thus prevent tearing of
the sheet. Tue feeding cylinders B and B are respectively geared so as to revolve

page_text: in pairs at the same surface speed, and all of the cylinders are geared relatively to
the impression cylinder C' as indicated in Figs. 1 and 15, so as to positively drive
all of said cylinders or rolls at definite speeds. When any adjustment is made to
the perforating cylinders the feeding rolls are driven at a greater or less speed to
correspond by changing the size of gears be relatively to gear . The adjustable
gearing devices may be similar to any of those used upon lathes or printing presses
heretofore constructed, and therefore will not be further describe in detail.
The perforated web of paper before being separated is caught by the nippers D'
and pressed upon the pin point d, and as the impression cylinder C' moves around.
the revolving detacher W rotating at a slightly greater surface speed than the
surface speed of the paper web, causes the sheet which is in the custody of the
nippers to be detached along the line of perforations from the web. The detacher W
consists essentially of a revolving shaft W₁ having an adjustable support Wa
secured thereto, and a transverse pressure strip preferably of leather or rubber W³
secured to said part W2 and radially adjustable thereon so as to permit of its
adjustment to increase or decrease its pressure upon the paper traveling with the
impression cylinder. As both the impression cylinder and the detacher move with
substantially the same speeds, and both of which are greater than the surface speed
of the paper web, it is self evident that when the detacher comes into operation the
sheet is detached from the web by this increased speed. The detacher is more
clearly shown in Fig. 25. The surface speed of the impression cylinder C¹ is
greater than the surface speed of the web of paper because the surface of the
cylinder is made up of the impression surfaces D³, the spaces between said
impression surfaces in which the nippers are arranged, and which combined
distances are greater in length than the length of the sheets of paper which would
be arranged upon each one of the impression surfaces.
It is essential that the forward edge of the web shall be received immediately
upon the pin points so as to be caught by the uppers irrespective of the distance
that the rear end of the sheet is from the rear end of the impression surface.
In a
machine of this class the adjustments are always made from the forward part of
the impression surface or the type form bed. The impression cylinders C', D'
may have their impression surfaces covered with felt in the usual manner. The
nippers D are secured to a rock shaft D³ which extends to the sides of the
impression cylinders and is provided with a pinion D with which pivoted rack
segment D³ meshes. The pivoted rack segments of the various nipper shafts are
moved in one direction for closing the nippers by a rod and spring D", and in the
other direction by a roller d² coming in contact with stationary cams I which are
adapted to open the nippers for the purpose of liberating the sheets, and also in the
case of the transfer of the sheets for opening the mppers of the impression
cylinder D' for the purpose of receiving the forward edges of the sheets.
The pin
peints dare secured upon laterally adjustable pieces De, which pieces are bolted to
a transverse bar D³ pivoted at d' in the impression cylinders, the frame D³ with its
pin points are adjusted to or from the forward end of the impression surfaces D³ of
the impression cylinder by means of an adjustable cam D8 pivoted at D7 to the
impression cylinder and moved by an aim D° adapted to be held in position by
suitable racks D10 shown in Fig. 26. These constructions are clearly illustrated in
Figs. 12, 13 and 14. The construction of the impression cylinders C¹, D¹ are
substantially the same, so that the description of the parts of one correspond to
the description of the parts of the other.
C is the first type form cylinder, and has its surfaces divided into a series of type
form beds upon which the type forms are securely clamped. The ink is delivered
to the type forins by suitable inking devices e, which inking devices may be of any
suitable construction. The type forms, type form clamps, and general construction
of the type cylinder are clearly illustrated in Figs. 5 to 11. An examination of
these figs. will show that the type form cylinder is provided with a series of type
form beds separated by spaces C³, and these type foi beds are provided with a
series of circumferential grooves C³, the said grooves being essentially dovetail or

page_text: undercut in cross section. Fitted in these grooves are the clamping blocks C, C³
and C, and between the blocks C, CB and C, respectively are arranged the type
forms as is clearly illustrated in Figs. 5, 7 and 8. The clamping blocks have their
lower parts dovetail in shape to fit into the grooves C and have their clamping
edges also undercut and preferably roughened as at w, but at right angles to the
dovetail portion so as to clamp the transverse edges of the type forms. Cessentially
forms a thrust plate or transverse abutment and is secured to the type form bed
and may be provided with dovetail pieces which fit into the grooves C and which
are held from movement by pins C (Fig. 7). The type form plates and clamping
blocks are then arranged as indicated, and held in position by the locking plate C
which is pivoted or movable held at its ends to the type form cylinder. This plate
is moved up against the ends of the clamping blocks and prevents them from
moving backward in the grooves, and thus holds the type plates in a firm clamped
position upon the surface of the cylinder. The plate C is locked in position by
an adjustable cam projection c¹ formed on a rocking bar C which is provided with
a lever and a holding rack c³ (Fig. 26), so that when the rocking bar is turned
to bring the cam projections c¹ into position to lock the bar or plate C, in proper
The cam
position, it may be locked against displacement by the rack devices.
projections are preferably formed as screws adjusted into the rocking bar C³, 80
as to be adjustable as to their cam action to suit any slight differences in the
position of the plate C, due to variations in the locking devices or type forms as
will be readily understood. These devices form a ready means of securing the
type forms upon the surface of the type form cylinder to be readily made without
the consumption of an excessive amount of time. It is evident that the details of
the cam devices for locking the plates may be varied without changing the
principle of the operation or construction. The above description with reference
to the printing cylinder C, also applies to the printing cylinder D, as they are
essentially the same in all material particulars. The printing cylinder D is also
provided with inking rolls c of substantially the same construction as the inking
rolls of the cylinder C.
The various cylinders C, C, D, D', are geared together by gearing C", so as to
make them all run at the same surface speed, and in the proper direction, and
these cylinders are put into motion by a pinion e meshing with the cylinder D' by
a power shaft pulley E. The arrangement of these cylinders C, C, D, D', in the
nanner illustrated, wherein the cylinders C, C and D' are arranged substantially
horizontal and at the lower part of the machine, and the cylinder D in an elevated
position, enables me to bring the center of gravity of the entire machine very low,
so as to make it run more steady and with less wear and tear upon the moving
parts. The more steadily the machine runs the less liability of imperfect printing,
and the greater the durability of the structure as a whole.
The shaft of the impression cylinder C' is fitted with a gear wheel J meshing
with a gear wheel J1 which latter is provided with a cam Jadapted to operate a
vertically reciprocating bar J3 which in turn operates a hell crank rock shaft J',
and by it transmits motion to the usual reciprocating inking rolls for transferring
ink from the fount to the distributing rolls. This mechanism is clearly shown in
Fig. 15.
L is a cleaning roll of any suitable construction, adapted to wipe the surface of
the second impression cylinder D' prior to its receiving the sheets from the
cylinder C for the purpose of cleaning the surfaces thereof, and avoid blurring
the first impression. This roll is pressed towards the cylinder D₁ by a suitable
spring device L and is driven by a belt C from a belt wheel L' upon
the power
shaft. This is clearly shown in Fig. 1. By this construction I am enabled to
dispense with the movable tympan or web heretofore employed.
The assembling devices F will now be described: It comprises essentially two
cylinders, each made up of a series of discs T secured upon the shafts F1, F2, which
shafts are geared together by gearing f and which gears mesh with the gears C",
of the impression cylinder D' as is clearly shown in Figs. 14, 16, 17 and 22. Each

page_text: of these cylinders of the assembling device is provided with a nipper shaft having
a series of nippers Q adapted to operate in connection with pins q' projecting
outwardly from blocks T' secured to each of the several discs on the assembling
cylinder or that next to the impression cylinder D', and in connection with blocks T'
without piss on the delivery cylinder or that formed on the shaft F. The nipper
>hafts g are secured at their ends to bell crank levers Q1, having at one end a cam
roller and at the other end a cam roller Q. The rollers (³ are adapted to
operate in connection with cams F8 to open the nippers Q, and rollers Q² are
adapted to operate in connection with the cams R and R', respectively, and are
also for opening the nippers. The cam R operates to open the nippers of the
assembling cylinder as indicated in Fig. 18, so that it takes the successive sheets
from the impression cylinder D and puts them upon the pins y', as indicated in
Fig. 19. The nippers are normally closed by springs Y. The cams F8 operate
the nippers of both the assembling cylinder and the delivery cylinder, as indicated
in Figs. 20 and 21, for the purpose of making the nippers of the assembling cylinder
release all of the sheets assembled upon the pins and allow said sheets to be taken
by the nippers of the delivery cylinder. The cam R operates to move the nippers Q
of the delivery cylinder for the purpose of releasing the assembled sheets and
permitting them to be received upon the fly frame K, which transfers them on to
the folding machine G. The cams R, R and F8 are carried upon a laterally
adjustable frame F³, said frame being guided by suitable guides f* on the main
frame A. This frame is reciprocated at set intervals by a cam F on the impression
cylinder D' operating in conjunction with a roller and a bell crank F. The
said beli crank is moved in one direction by a spring device, and in the other
direction by said cam F. Normally the cams are in the position shown in
Fig. 17, so that the nippers are not operated by said cams. The nippers are
however, operated by the cam R', to receive the successive sheets from the
impression cylinder to assemble them upon the assembling cylinder, and the nippers
of the delivery cylinder are operated by the cam R, but this latter operation is
immaterial except when in the act of delivering assembled sheets. When all of the
sheets are assembled upon the pins g', the cam F causes the bell crank F to be
reciprocated, moving over the frames F3 laterally and bringing the cams F8 into
operative position to actuate the nippers. When thus done the operation shown in
Figs. 20 and 21 take place, and we have the assembled sheets upon the assembling
cylinder released by the nippers of that cylinder, and said assembled sheets
delivered to the delivery cylinder in custody of its nippers. The sheets in this
assembling cylinder are not held upon pins, but are merely held by friction
sufficient to carry them around and deliver them to the fly frame, which latter
action takes place as soon as the cam R comes into operation. The cams F* only
come into operation once for each complete revolution of the cylinder D¹, or it
may come into operation more often if the pamphlets are to be composed of fewer
number of sheets, in which case the assembled sheets may be discharged two or
more times for each revolution of the impression cylinder by simply adding
additional cams about its periphery. The cams F require the very nicest
adjustment to enable the nippers to release and grip the sheets at the proper
instant, and to do this, I employ the following simple construction. The frame Fa
is split at each end to form clamps f³, the cams F are provided with circular
portions which fit into apertures in said frame F³, and are grasped and held by
friction therein by simply tightening the cams F³. In this manner the cams F18
may be adjusted about their center so as to come into action at precisely the exact
instant.
If a cover is to be placed on the pamphlets, the covers may be laid upon the
table S and delivered upon the folder by hand in advance of the delivery by the
fly frame of the assembled sheets. This fly frame K may be operated in any
suitable manner. As shown however, it is operated by a pinion and bell crank
rack lever K, and a cam K³ upon the shaft of the impression cylinder D'. It is
evident that in this manner, for each revolution of the impression cylinder, the fly

page_text: frame K will deliver the assembled sheets. When the assembled sheets are held
upon the table of the folding machine G, the folding blades P are forced down
through the fingers of the fly frame to fold the central portions of the sheet
between two feeding bands m and n passing over suitable rollers. The folding
fingers are operated by suitable gears and pivoted rack frame K¹, and a cam K²,
clearly shown in Fig. 15, and is brought into action after the fly frame had laid
the sheets upon the table. One of the rollers guiding the feeding bands n of
the folding machine is moved laterally to open the orifices or spaces between the
bands for the entrance of the folded sheets after the folding knife descends and the
crease has been made, and this is accomplished by a bar m and a cam M upon
the impression cylinder D', as is clearly shown in Figs. 1 and 14. In this
manner the sheets are first creased and pinched to make the fold, and then the
pressure is taken off to avoid blurring the printing. The folded pamphlets are
fed down by the bands n and delivered to the stacking or packing apparatus H,
which may be of any suitable construction, that shown having a reciprocating
head reciprocated by the link H¹ and bell crank H³, the latter being moved
by a link H³, bell crank H' and cam K.
The folding machine comprises a frame G', carrying the feeding aprons or
bands n, independently movable relatively to the fly frame and assembling devices
so that it may be adjusted upon the main frame A to bring the fold exactly in the
right place to suit the particular size of sheets employed. The details of this adjust-
ment are clearly shown in Figs. 23 and 24. It will be seen that the frame G¹ is
guided in suitable parallel guides in the main frame A, and is moved in its
adjustment by screw shafts G³ rotated by a hand wheel G and pinions G³, as is
self evident by an examination of the drawings. In this manner the adjustment
is made and ensures the most correct fold and margin in the finished pamphlet.
It is of course evident that the adjustment may be performed in any other suitable
manner.
The pamphlets may have their several sheets secured together by paste, stapling
or stitching, but this feature forms no part of my present application, and therefore
I will not further refer thereto.
I do not confine myself to the minor details of construction with respect to
these various improvements which I have described, as it is evident that they may
be very materially modified in minor particulars, without in the least departing
from the general features or principle of the invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The arrangement and combination of the two printing cylinders and the
two impression cylinders provided with nippers, substantially in the manner
described.
2. The combination with the nippers arranged at the forward end of the bed
of the impression cylinder combined with the pivoted adjustable transverse frames
with which the nippers operate, whereby the gripping point of the paper may
be adjusted circumferentially.
3. The laterally adjustable nipper seats carried by the circumferentially adjust-
able frame at the forward part of the impression surface to receive the rear or
free ends of the nippers.
4. Means for adjusting the folding device relatively to the delivering device
whereby the line on which the assembled sheets are folded may be varied as
desired.
5. The elastically pressed wiping roll for cleaning the surface of the second
impression cylinder before it receives the paper, driven at a different surface
speed from that of the impression cylinder.
6. The means for adjusting and clamping the type forms in position.
7. The revolving cylinder of the assembling device having a series of pins,

page_text: and the nippers working in conjunction therewith, in combination with delivery
devices for delivering a given number of assembled sheets from the assembling
cylinder.
8. The devices for operating the nippers to assemble the sheets on the assembling
oylinder and to release the same after a definite number of revolutions.
9. The combination with the impression cylinders, perforating devices and
nippers for folding the sheets, of the detaching devices for breaking the perforated
web into sheets before it passes to the first impression cylinder, and gearing for
operating the detaching devices at a different speed from the surface speed of
the impression cylinder.
10. The adjustable perforating devices of the character shown.
11. The adjustable folding devices substantially as described when combined
with the assembling device of a perfecting printing press.
HENRY PAUL FEISTER.
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.