IMPROVEMENTS IN PRINTING PRESSES
Year: 1872

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
A
Lake, & Co., Patent Agents, Southampton Buildings, London, for">
the Invention of "IMPROVEMENTS IN PRINTING PRESSES."-A com-
munication from abroad by Andrew Campbell, of Brooklyn, New
York, United States of America.
Sealed the 12th March 1872, and dated the 18th January 1872.
PROVISIONAL SPECIFICATION left by the said William Robert Lako
at the Office of the Commissioners of Patents, with his Petition, on
the 18th January 1872.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN PRINTING PRESSES,"
a communication, to be as follows:-
My Invention relates to that class of printing presses known as the
bed and cylinder press, and more especially to presses designed for book
and color printing and other fine work, which require a clear and
bright impression and an accurate register.
A

page_text: The principal object of the said Invention is to render the machine
self-acting through the agency of the sheet to such an extent that a
sheet improperly fed or registered will pass through the machine without
being printed, and be deposited in a misplaced position in the pile, so as
to be readily distinguished and removed therefrom, while the supply of
ink to the form is stopped, and the cylinder kept from contact therewith
during such improper feeding, and the counting mechanism prevented
exoont the winted sheets
being printed, and be deposited in a misplaced position in the pile, so as
to be readily distinguished and removed therefrom, while the supply of
ink to the form is stopped, and the cylinder kept from contact therewith
during such improper feeding, and the counting mechanism prevented
from recording any except the printed sheets
The various improvements are designed to perfect the machine, and
better adapt it to perform the functions and execute the work for which
it is more especially intended, as above stated.
The principal features of my Invention are,—
First. The combination with a printing press of an air pump and
suction air passage provided with a diaphragm which actuates a coupling
when a sheet properly fed closes one or more branch air passages, and
causes the printing cylinder to be depressed for making an impression;
while the coupling remains disengaged and the cylinder elevated when
a sheet is improperly fed. A second diaphragm at the end of this air
passage operates a fly coupling, and relcases the fly when a sheet passes
through the machine. A suitable connection between the rock shaft
which depresses the cylinder and the fly raising mechanism causes the
fly when an unprinted sheet passes through the press to be retained
longer before it is released, whereby the sheet is deposited misplaced in
the pile so as to be readily removed therefrom. By a suitable connection
of the fountain driving mechanism with the coupling through which the
printing cylinder is depressed the fountain is operated, and supplies ink
only when a sheet is properly fed so as to be printed. An arrangement
and connection of the actuating mechanism of the sheet counter with
the side rods causes only the printed sheets to be counted, as the counter
is operated only when the side rods descend in depressing the printing
cylinder.
Second. The combination with the pneumatic apparatus of an electro-
magnetic apparatus, and overhead points which close the current and
permit the action of the pneumatic apparatus only when a sheet is pro-
perly registered preparatory to printing the second side of the sheet.
By connecting the two wires of the electro-magnetic apparatus in a
suitable manner with the point shaft the latter completes the circuit,

page_text: and permits the pneumatic coupling to release the fly for discharging
improperly fed or unprinted sheets.
Third. The combination of two sets of form and distributing rollers
for supplying ink to the form from both ends, each set carrying less ink
than the form requires, whereby an even inking is insured and an over-
inking prevented during the passage of improperly fed and unprinted
sheets through the press.
Fourth. Improved means for adjusting the form and distributing
rollers, whereby the wiping action of the form roller on the form which
results from an imperfect adjustment is prevented. This wiping action
of an imperfectly adjusted form roller when repeated, as in the case of
the passage through my press of improperly fed and unprinted sheets,
operates to fill up the fine lines in the type and engravings, and thus
produce a correspondingly blurred and indistinct impression when the
next properly fed sheet is printed.
Fifth. Improved mechanism for actuating the bed and carriage,
whereby that tremulous or slight vibratory movement which the bed
receives when actuated in the ordinary manner is prevented, and the
consequent wear of the type and widening of the lines of an engraving
which result from this vibratory movement are avoided.
The rock shaft and diaphragm are connected with a cam lever and
segments and a coupling bolt. In combination with the said coupling
bolt is a wiper or cam with a spur. One of the segments and the
coupling bolt are connected with a brake block and adjustable spring.
In combination with the same segment and the cam lever and coupling
bolt there is a cam or incline. I employ side bars and front guides, and
an air pipe, and hollow adjustable feet constructed to guide the sheet
thereunder; and in combination with the hollow feet I arrange a sieve
for preventing the entrance of lint or other foreign substance into the
air passage.
The said hollow feet and feed table have spring sheet
guides.
The air cylinder has a solid piston and a hollow valve piston and
actuating weight connected therewith. With the air pump is combined
a carriage which actuates the said solid piston. I employ a bell crank
and a fly retaining hook, which has an arm connected with a diaphragm
and bolt, and there is a cam arranged in combination with the air pump,

page_text: spring engaging arm on the point shaft for completing the circuit, and
there is a guard in connection with a point and the feed table.

page_text: The inking tables have clamping irons provided with locking tongues
in combination with wooden panels with central grooves in the ends
thereof corresponding with the tongues in the clamping bars for insuring
an equal expansion and contraction of the wood on both sides, and
preventing warping thereof. The feed table is provided with sectional
removable panels for facilitating the adjustment of the point plate.
The stand of the feed table is arranged with the hinged portion thereof
and the printing cylinder, whereby the form and cylinder are rendered
accessible by swinging back the hinged portion of the table. The bars
or frame of the press have a rack and pinion whereby the frames and
the parts supported thereby can be moved out of the way when
desired.
In combination with the side rods and a double-ribbed cross stay I
arrange cylinder supporting and counterbalancing levers and weights.
The side bars consist of a cast body provided with apertures for the boxes
of the rock shaft and printing cylinder, also with cap picces at the top
and tie rods of wrought iron, which secure the whole together.
In combination with the form and the distributing roller I use form
roller boxes and inclined bearings therefor. The cylindrical box of the
distributing roller is constructed with a tightening cam. There is a
locking key arranged with the bracket bearing and inclines, the form
roller boxes, and the tightening cam of the distributing roller boxes;
and the form roller boxes are provided with an adjusting screw, and are
so attached to the roller as to be removable therewith, and capable of
being replaced without readjustment except in case of shrinkage. There
are adjusting set screws and stop bearings at the bottom of the inclines.
The stop and roller swinging cam in combination with the inclined
bearings and form roller boxes retain the form roller from contact with
the form and distributor. In combination with the said bracket bearing
is a cam, spurs, and holes with a spring and hand wheel; and in the
frames there are notches, inclines, and shoulders forming a temporary
bearing for adjusting the form and distributing rollers. In combination
with the bed and printing cylinder is a pivoted tooth lever, a cam, and
tooth block.

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 17th July 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
Robert Lake, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of January, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators,
and assigns, or such others as I, the said William Robert Lake, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ircland,.
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN PRINTING PRESSES," a communication to me from abroad by Andrew
Campbell, of Brooklyn, New York, United States of America, upon the
condition (amongst others) that I, the said William Robert Lake, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, do hereby.
declare the nature of the said Invention, and in what manner the same

page_text: book and colour printing and other fine work which requires a clear
and bright impression and an accurate register.
The principal object of the Invention is to render the machine self-
acting through the agency of the sheet to such an extent that a sheet
improperly fed or registered will pass through the machine without
being printed, and be deposited in a misplaced position in the pile so
as to be readily distinguished and removed therefrom while the supply
of ink to the form is stopped and the cylinder kept from contact
therewith during such improper feeding, and the counting mechanism
prevented from recording any except the printed sheets.
The various improvements are designed to perfect the machine and
better adapt it to perform the functions and execute the work for
which it is more especially intended, as above stated.
The principal features of my Invention are,―
1st. The combination with a printing press of an air pump and
suction air passage provided with a diaphragm which actuates a
coupling when a sheet properly fed closes one or more branch air
passages, and causes the printing cylinder to be depressed for making
an impression, while the coupling remains disengaged and the cylinder
elevated when a sheet is improperly fed. A second diaphragm at the
end of this air passage operates a fly coupling and releases the fly
when a sheet passes through the machine. A suitable connection
between the rock shaft which depresses the cylinder and the fly raising
mechanism causes the fly when an unprinted sheet passes through the
press to be retained longer before it is released, whereby the sheet is
deposited misplaced in the pile so as to be readily removed therefrom.
By a suitable connection of the fountain driving mechanism with the
coupling through which the printing cylinder is depressed, the fountain
is operated and supplies ink only when a sheet is properly fed so as
to be printed. An arrangement and connection of the actuating
mechanism of the sheet counter with the side rods causes only the
printed sheets to be counted, as the counter is operated only when the
side rods descend in depressing the printing cylinder.
2nd. The combination with the pneumatic apparatus of an electro-
magnetic apparatus and overhead points which close the current and
permit the action of the pneumatic apparatus only when a sheet is
properly registered preparatory to printing the second side of the sheets.

page_text: By connecting the two wires of the electro-magnetic apparatus in a
suitable manner with the point shaft, the latter completes the circuit
and permits the pneumatic coupling to release the fly for discharging
improperly fed or unprinted sheets.
-
3rd. The combination of two sets of form and distributing rollers
for supplying ink to the form from both ends, each set carrying less
ink than the form requires, whereby an even inking is insured and
an over inking prevented during the passage of improperly fed and
unprinted shects through the press.
4th. Improved means for adjusting the form and distributing rollers,
whereby the wiping action of the form roller on the form which results
from an imperfect adjustment is prevented; this wiping action of an
imperfectly adjusted form roller when repeated, as in the case of the
passage through the press of improperly fed and unprinted sheets,
operates to fill up the fine lines in the type and engravings, and thus
produce a correspondingly blurred and indistinct impression when the
next properly fed sheet is printed.
5th. Improved mechanism for actuating the bed and carriage,
whereby that tremulous or slight vibratory movement which the bed
receives when actuated in the ordinary manner is prevented, and the
consequent wear of the type and widening of the lines of an engraving
which result from this vibratory movement are avoided.

page_text: Figure 9 is an enlarged view shewing the bearings and illustrating
the mode of adjusting the form and distributing rollers.
Figure 10 is an enlarged view shewing the couplings and connecting
parts actuated by the pneumatic apparatus.
Figure 11 is an elevation drawn to an enlarged scale of the electro-
magnetic apparatus with a slide valve for the air passage, also a
detached view of one of the hollow feet and guide springs connected
therewith.
Figure 12 shews details also drawn to an enlarged scale of the same
apparatus with a lift valve.
Figure 13 shews details of the clectro-magnetic apparatus.
Figure 14 shews details of the main frame on the driving side of the
machine.
Figure 15 shews details of the said frame on the feeding side.
Figure 16 shews details of the central ribs of the said main frame.
Figure 17 shews details of a cross stay carriage, rock shaft, and
counterbalancing lever, and weights for the printing cylinder.
Figure 18 shews details of gearing, air pump, sliding frame, and
counterbalance for the same.
Figure 19 shews details of the printing cylinder and its attachments.
Figure 20 shews details of a feed board and stand, points, front
guides, and parts connected with the same.
Figure 21 shews details of side rods, sheet counter, and feed board
elevating mechanism.
Figure 22 shews details of the bed and the construction of the inking
tables.
Figure 23 shews details of fly and fountain driving mechanism.
Figure 24 shews details of the inking apparatus and other parts.
Figure 25 shews details of the ink fountains and attachments and
roller supporting frames.
Figure 26 shews details of the pneumatic couplings drawn to an
enlarged scale.

page_text: Figure 27 shows details of the fly wheel, driving pulleys, bolt smiter,
and pneumatic couplings.
Like letters indicate the same parts throughout the Drawings.
A is the side portion of the main frame on the driving side of the
machine; A', the opposite portion; A³, the portions which connect the
ends of A', A¹; and A³ and A*, the bracket extensions of the frame at
the fly end. A³, the central cross stay of the main frame; Aº and A'
are the two central ribs on the driving and feeder side, secured between
the ends of the frame and resting on the cross stay at the centre.
These parts constitute the main frame, and may be of any ordinary
construction. B is the feed table; C, the printing cylinder; D, the
bed; E, the fly; F, the fly table; G, the main driving carriage; and
G¹, the bed-roller frame. H is the fly wheel, and H³, H', are the tight
and loose pulleys, mounted on the shaft h and supported in the frame A,
and an outside hanger 7' carried by studs h². ³ is the main driving
pinion on the shaft h; and h' is an intermediate gear wheel communi-
cating motion to the cylinder gear wheel keyed on the cylinder shaft.
7 is the ink fountain driving wheel, receiving motion from a pinion h
on the hub of the intermediate wheel *. ³ is the bed carriage driving
wheel, mounted on the shaft h³, and receiving motion from the main
driving pinion. h is the carriage driving pinion on the inner end of
the shaft ; it gears with a carriage rack " on the sliding frame.
This rack is of the construction shewn in the Drawings, and is kept in
engagement with the pinion by a roller , which travels in a groove 1227
surrounding the rack. The said rack is thus compelled to travel above
the pinion in one direction and below it in the opposite direction,
thereby imparting a horizontal reciprocating motion to the frame and
carriage equal to the diameter of the pinion and the length of the
rack " combined, while the frame has also an up-and-down motion in
vertical ways in the carriage G equal to the diameter of the pinion /10
and the breadth of the rack h₁ combined. This vertical motion, which
is imparted to the frame at each extreme of its horizontal movement
by the ends of the rack ", is communicated to both ends of the frame
by means of vertical racks * attached near cach end of the sliding
frame, and which engage with two pinions ", ", on the ends of a
connecting shaft, whereby the vertical movement imparted to either
end by the rack and pinion ", 1, is directly communicated to the
other, and all torsion or tendency to bind is prevented. The frame

page_text: The operation of the pump is as follows: The carriage being at its
rear extreme of movement the two pistons are together at the outer end
of the cylinder, when the carriage as it is reversed draws with it the solid
piston connected to it; this movement tends to produce a vacuum
between the two pistons, and causes the external air to press with
greater force against the outer end of the hollow piston, which closes the
valve and causes the two pistons to travel together, until the solid piston
reaches the position shewn in Figure 6, and uncovers the induction
opening j, when the ingress of air through this opening partially restores
the equilibrium and reduces the pressure against the hollow piston,
which is now drawn outward by the weight ju attached thereto, at the
same time that the solid piston is completing its movement in an
opposite direction. As the latter is reversed the air now in the cylinder
between the pistons escapes through the valve of the hollow piston. By
increasing or diminishing the weight j" a more or less perfect vacuum can
be maintained in the cylinder, while the opening ; is uncovered, and
between the pistons, whereby the force of the suction through the pipe
communicating with this induction opening is regulated accordingly.
B' and B² are the two stands which support the 'feed table and are
secured together by the stretcher B³ and the stretcher rod b. The stands
rest upon the fountain and angle roller frame, and are secured by bolts.
to the top of the main frames in the usual manner. They are arranged
behind the cylinder as shown, leaving a space between them and the
latter to permit easy access to the cylinder in making ready the form
and cylinder. The front legs of both stands B' and B are cast with air
passages n³, extending from the bottom to the pivot b¹ at the top. The
front portion 63 of the feed table is made separate from the rear
portion to which it is hinged at b. The portion 6* is constructed with
two side bars 3 which are connected at the front by the angle plate b*
and at the rear by a shaft . The panels of the rear portion of the feed
board are secured between these side bars and the angle plate b*.
The feed board is supported on its front edge at the time of the
closing of the grippers by the side bars resting on suitable supports
c and c, from the side rods c'. The pivots b¹ pass through the feed
board stand and into the ends of the shaft &³, which ends terminate at
the outside of the side bars. The side bars 6s are cast with grooves n²
to which is soldered a plate forming an air-tight passage. The pivots 6¹

page_text: are made hollow at their inner ends, and provided with a radial hole in
the stand posts, while a radial hole in the shaft at the inner end of the
pivot communicates with the passage in the side bars 6s to form a conduit
between the two passages n³ and n². n³ is a pipe which connects the two
side bars 6³, and forms a continuation of and communication between the
air passage in the latter. It is arranged immediately over the closing
points of the grippers and is constructed with three hollow legs n*,
provided with feet n³, having a hole ne in the bottom of each, which feet
are made vertically adjustable by screwing on the legs to regulate the
space between the feet and the surface of the cylinder. 2¹8 is a screen
of wire cloth arranged in the feet to prevent the entrance of lint into the
air passage. Light flat springs 221 are secured to the under side of the
angle plate at the front edge of the feed table, and arranged to project
in front, directly under each of the fect n³, leaving between them and the
spring a space of the thickness of a sheet. As a sheet is fed to the front
guides these -springs operate to keep the sheet in close contact with the
feet to insure the closing of the apertures in the same by the suction
produced by the pump. m is the cam driving pinion on the inner end
of the main driving shaft ; M is the combined cam and gear wheel
keyed on a shaft m³, supported in bearings between the frame A and rib
A°; m³ is the fly cam between the wheel M and the frame A; m³ is the
impression cam on the inner side of the wheel M; m is a wiper on the
same side, and m³ the fly releasing cam on the fly cam side, used for a
purpose presently to be explained; m³ is a stationary shaft or fulcrum,
secured between the main frame and bed rib; m³ is a cam lever fitted;
loosely on the shaft me and provided with a roller m³, which runs in the
printing cam m³. m³ is a segment which fits loosely on shaft m³, by the
side of the cam lever m², and gears with the segmention the rock shaft c;
m is a stationary casting bolted to the bed rib A° adjacent to the
segment m³.
the Land stand Di and connecting with

page_text: segment m. It is provided with a spur m, which projects through a
slot m in the hub, by which the bolt is moved in one direction, as
hercin-after explained. When not coupled by the bolt m the cam
lever m moves independently of the segment m³, while the latter
remains stationary. The hub m¹s is provided with a cam or incline m
attached to its end. When the action of the bolt m of the diaphragm
only moves the coupling bolt m¹ sufficiently to couple the segment and
cam lever, this incline, as the segment swings contiguous to it, will
engage with the end of the coupling bolt and complete its coupling
movement. In coupling the segment to the cam lever the bolt m™ is
moved by the diaphragm and bolt m³, so that its end will overlap the
rear edge of the cam lever at thic point indicated by m³, so that as the
cam lever is swung toward the rear of the machine it will carry with it
the segment locked therewith. The return of the segment as the cam
lever reverses is insured by a lug m³ of the segment, which overlaps the
back of a corresponding lug m" of the cam lever; these lugs and the
coupling bolt lock the two parts together, so that they oscillate as one
piccc. As these parts return to their original or normal position the
wiper m of a double wedge form is brought by the revolution of the
shaft m to engage with the projecting spur m and uncouple the
segment and lever by sliding back the bolt m¹ to its former position.
m is a brake block arranged in the segment m³ in contact with the
coupling bolt m, against which it is pressed by a spiral spring m"; the
pressure of the latter is adjusted by a set screw m², as clearly shown,
and the force required to slide the bolt is regulated for a purpose herein.
after to be explained. o is the arm of the fly-retaining hook turning
freely on the shaft m; o' is a pipe having flexible joints and connecting
the air passage in m with an air passage o³ in the arm o, which passage
terminates in a recess closed by the diaphragm cover o³. To this
diaphragm is attached the stud o* having on its end a roller o³, which is
operated by the fly releasing cam m³ above described when releasing
the bell crank o' from the hook o¹. o¹s is a side cam attached to the
wheel M at the extreme end of the cam m³, it operates to return the
stud of to its normal position after the roller o' (presently to be described)
has passed from the cam m³. 0° is the compound bell crank turning on
the stud o', which extends through the frame and forms one of the
supports for the outside hanger. o³ is a bar sliding in the foot of o®, and
provided at its outer end with a roller o³, on which the fly cam rolls,
and by which the bell crank is actuated. This bar should be arranged

page_text: to slide in a direction tangential to the largest part of the fly cam. 010
is the link connecting with the fly crank o" at the front end of the
machine, by which motion is imparted to the fly. o is the hook of the
arm o, which engages over the upper end of the bell crank o' when the
roller o has reached the highest point of the fly cam. 013 is a link con-
necting the sliding bar o³ with a short crank o" on the rock shaft c. It
connects with the sliding bar by a slot o" in the link, engaging with a
pin o, which projects from the sliding bar o' through a slot o" in the
foot of the bell crank.
In Figure 10, which represents more particularly the parts operated |
through the medium of the diaphragms above described, the mechanism
is shown in the position it occupies when the cylinder is depressed and
printing a sheet. The bell crank o' is shown released from the hook
arm o, and in the act of being actuated by the fly cam m³ for raising the
fly. The arm o¹ on the rock shaft, to which is jointed the link o", is in
the position in which the bar o³ is drawn out of the foot of the bell crank
to its maximum distance, in which position the roller o' at its end passes
off of the fly cam, and consequently releases the fly at the earliest
moment. When the segment and cam lever m³, m³, are not coupled
together, as in the case of the passage of an improperly fed and
unprinted sheet through the press, the position of the arm o" is at right
angles to the one shown, and pointing toward the bell crank. In this
position the arm and link o" force the sliding bolt o³ into the foot of the
bell crank, which causes the roller to remain on the cam the longest
period of time. The fly is thus retained for a correspondingly longer
period, and permits the unprinted sheet to pass farther upon the fly
before the latter is released. The fly when released deposits such
unprinted sheets on the pile misplaced and projecting from the pile of
printed sheets, from which they can be readily removed from time to
time as convenient.
The fly shaft e is supported in brackets e³, and has attached to its
outer end a pulley e², over which passes a strap; one portion e³ of the
latter is secured to a spring lever e and to the pulley e², while the other
end e* passes over a brake pulley e, and connects with a weight e'. The
brake pulley e is provided with stop pins, which arrest it before the fly
reaches either extreme of its movement, and thereby compel the strap
to slide on the surface, the friction between the two surfaces operating
as a break to retard and soften the movement of the fly as it approaches

page_text: either extreme. The shaft of the fly crank o" has attached to its
opposite end a corresponding crank o*, to which the lower end of the
spring lever et is jointed. e is a lug projecting from the said crank o*,
provided with a set screw e', against which the lever presses as a.
fulcrum. By turning this screw the upper end of the spring is adjusted
in or out, and the end of the fly fingers are brought to a proper bearing
on the shaft k. The fly is counterbalanced by a bar e", secured between
the projecting ends of the castings e", which receive and hold the fly
bar.
P represents the fountain roller, which is of the ordinary construction.
P. p, are the ends of the fountain bowl; p¹ is the bottom and p³ is the
back, with the knife p³ secured thereto. The ends of the knife back fit
in grooves in the fountain ends, and are secured in place by screws p*.
passing through the fountain ends at an angle to the fountain back, as
shown. The edge of the knife is adjusted to the fountain roller by'
means of push pins and screws in the ordinary manner.
I employ two ink fountains and two sets of angle rollers u, arranged
at each end of the machine. Each fountain and set of angle rollers
are supported in side bars or frames L, the rear set being bolted to the
top of the main frame. At the front end of the machine these bars or
frames, which also support the bearings of the fly, are made capable of
being moved forward out of the way when required to permit easy
access to the form. For this purpose the upper faces of the main
frames are constructed with a depressed rack, with which engage"
pinions mounted on a shaft 1, which is supported in boxes or bearings
formed in the frames L and by extensions of the bottom of the ink
fountain. The end of this shaft is provided with a winch by which it
is rotated in sliding the frames and the fountain fly and angle rollers
which they support forward and back. This arrangement permits the
said angle rollers to pass twice over the inking table after the ink has
been supplied thereto instead of only once, as is the case when the ink
fountain is outside of the angle rollers, whereby a much better dis-
tribution is ensured.
P is the lifter or ductor roller, mounted on the ends of the lifter
arms p³ attached to the rock shaft pº in the ordinary manner. p³ is a

page_text: engages with the periphery of the fountain driving cam po. 2210 is a set
screw working through a lug from the leg of the stand B², against the
thread of which the upper edge of the lever p' rests. 2" is an adjusting
arm, keyed rigidly to the shaft pe by the side of the lever p'. It is
provided at its end with an adjusting screw p", the end of which forms
a stop for the upper arm of the lever on the side opposite that of the
screw p²º. The time the ductor roller remains in contact with the
fountain roller is regulated by the shape of the cam p', and the amount
of contact by the screw p", while the screw p" prevents an undue
pressure of the ductor roller upon the ink table. 2 is the loose shell
of the fountain-roller pulley, to which is secured the strap p" that
passes around it and connects with a wrist pin on the cam pº. p¹³ is
a second strap secured to the hub of the shell, and which supports a
weight p for reversing the shell after it has been moved by the
strap p. p" is the flanged portion of the pulley, keyed rigidly to the
shaft and provided with ratchets p" on its inner face, with which engages
a pawl attached to the inner surface of the rim of the shell or
sleeve;
the latter fits loosely over the former and compels the shaft to
rotate with the shell as the same is moved by the strap p¹, while the
shell freely turns on the shaft as it is reversed by the weight and
strap p. The fountain cams p' are actuated from the fountain driving
wheel through the bevel gear wheels p" on the inner end of the
fountain driving shaft, which engages with the bevel gear wheels p" on
the horizontal shaft p, at whose ends are bevel gear wheels p2s which
engage with the bevel gear wheels p on the inner ends of the cam
shafts. The bevel gear wheel p" is keyed on the end of the sleeve of
clutch p, which is fitted loosely on the shaft p", while the cor-
responding half clutch p" is keyed on the shaft by a feather, so
that when the clutch is engaged the shaft will be compelled to rotate,
and when disconnected will remain at rest. A sliding rod p" works in
holes in the projecting ends of the stud bearings of the shaft p"; p” is
a link connecting the end of this rod with the upper end of a lever p²,
At the
the lower end of which is jointed at 2" to the segment mº.
centre of this lever is attached a roller 2%, which travels between the
ways or fulcrum p³ formed on the side of the cam lever m³ near its
upper end. p is a collar rigidly secured to the rod p"; p is the
corresponding part fitting loosely on the rod p". p is an arm provided
with a slecvc at each end, one fitted loosely on the hub of the
clutch p, while the other fits on the hub of collar p, and is retained

page_text: în place by a collar p™ rigidly secured by a set screw. p is a spiral
spring on the rod 22, which presses against the collar ps and operates
to keep the parts p and p of the clutch engaged.
When the segment and cam lever are locked together and the press
is printing, the lever p" is held rigidly connected to the segment and
cam lever and vibrates with them, as shown in Figure 10.
The collar p³ is so adjusted on the rod p" that the backward move-
ment imparted to the rod by the lever p actuated as above will not
bring this collar in contact with the collar 2. When a sheet is im-
properly fed and the segment remains stationary while the cam lever
oscillates, the lower end of the lever jointed to the segment will also
remain stationary, while the upper end receives a vibratory motion
through the ways p" which oscillate with the cam lever. The upper
arm of the lever p in this case is thrown farther backward than when
actuated by the locked segment and cam lover, and consequently gives
a longer backward movement to the rod p", which brings the collar p³ in
contact with the collar ps, and forces it backward sufficiently to dis-
engage the clutch p, p. This disconnects the shaft p" and fountain
actuating mechanism, and stops the supply of ink during the passage of
the improperly fed and unprinted sheet through the press. As the
rod p reverses the spiral spring p returns the collar p³ to its former
position and again engages the clutch. This engagement and dis-
engagement of the coupling is repeated until a sheet is properly fed and
the segment and cam lever coupled together, when the movement
imparted to the rod p being insufficient to disconnect the clutch the
ink fountain is actuated in the usual manner. The contiguous faces of
the collars p and p³s have rebates formed in them, so that by turning
the collar by means of the ball attached to 2 to bring the rebates
in the one face opposite the portions left in the other the two collars
will mesh into cach other, as the rod reciprocates without releasing the
clutch.
The distributing roller q and the form rollers q' are of ordinary con-
struction; q is the bracket bearing which supports the distributing and
form rollers at each end. It is secured by bolts to the top of the frame
ribs. 93, 9, are the boxes of the distributing rollers, they are of cylindrical
form, the central portion being reduced so as to form a cam qʻ.

page_text: To insure a clear and distinct impression it is of the utmost im-
portance that the surface of the form rollers travel in perfect unison with
the form to prevent the wiping action which results from a want of such
uniformity in the movement of these surfaces. To insure this required
uniformity of motion it is essential that the surface of the form rollers
press equally against the form and the distributing roller, as an unequal
pressure will cause the surface against which the pressure is the greater
to act as a driver, which will cause the two other surfaces in contact to
slip or wipe. This will occur where there is the least surface in contact,
and almost always proves to be in the form; it causes the finer lines in
engravings and type to become more or less filled up, thereby producing
a correspondingly blurred and imperfect impression. To prevent this
result it becomes of the utmost importance to secure and maintain an
accurate central adjustment of the form rollers between the two points
of contact.
As the form rollers are liable to shrink, and consequently require re-
adjustment, a proper adjustment of these rollers becomes a matter of
great difficulty. To insure this required adjustment I construct the
boxes of the form rollers with a plane surface on one end,
and construct a bearing surface against which they are inclined, as
shewn at q. The face of the inclines should be made parallel to a
curved line passing through the centres of several circles of unequal
diameter, made tangential to the surface of the form and the surface of
the distributing roller, although a line approximately arrived at by
drawing a straight line through the centres of two circles as above
described will be sufficiently accurate for ordinary purposes.
A. stop and separating cam g' is arranged in an opening in the centre
of the bracket q³, and secured to a shaft 28, the end of which projects
outside of the bracket and terminates in a milled wheel q, by which the
cam is operated. To retain the cam in its proper position when adjusted
two holes q¹º are made in the face of the bracket, and a pin q" is arranged
to project from the contiguous face of the hand wheel and engage in said
holes. The inner portion of the hole in the bracket around the shaft q³
is enlarged to receive a spiral spring which operates to keep the hand
wheel pressed against the face of the bracket. One of the holes q 10 is so
arranged that the pin will lock it in the position shewn in Figure 9,
when it acts as a stop bearing for the form roller boxes, while the other
hole is arranged to lock the cam after it has forced outward the form

page_text: rollers. The boxes q* are adjusted by set screws q", which pass through
the box and rest with their ends against the edges of the stop 9. By
turning these set screws the rollers are adjusted as they shrink, while
their proper central position between the form and distributing rollers is
accurately maintained. When adjusted the boxes are secured in place
by a key q inserted through a hole in the bracket, so that its upper
edge will rest in contact with the central cam q' of the distributing
roller box, while the lower edge rests on the top of the form roller boxes.
The key is tightened by turning the boxes q³ by a suitable wrench, the
cam operating as a wedge to press the key firmly against the boxes. If
the form rollers become much reduced in size a wider key will be
required.
By constructing the key with a central enlargement on one edge, and
using the key first with this enlargement down and then reversing it
when a wider key is required, the necessary increase in the width of the
key in the latter case will in effect be produced. To remove the rollers
the key is released by reversing the cam q', and withdrawn. The boxes
of the distributing rollers are pushed out of the bracket by sliding them
on the shaft, when the roller is readily lifted out. The form rollers are
removed with their boxes, which are held thereon by set screws, which
project into a transverse groove made around the roller shaft..
To facilitate the adjustment of the form rollers I construct the rear
ends of the frames L with a notch q¹³, an incline q, and a stop or
shoulder q, corresponding in relative arrangement and distance from
cach other with the bearing of the distributing roller, the incline q, and
stop which the cam q' affords, as above described. The distributing
roller and boxes are placed in the notch q¹³, and the form roller with its
boxes attached is placed on the inclines q¹. The adjusting screws q",
which are now readily accessible, are turned so that when resting with
their ends against the stop q¹ the form and distributing rollers are
properly adjusted with respect to each other. The screws q" are now
fixed in place by jamb nuts, when the rollers are ready to be replaced in
their permanent bearings, in which they will have the same proper
adjustment, not only with themselves but also with the form.
> is a rack pendent from the carriage G, with which gears a pinion ¹
on the shaft 3. The latter has its bearings in the rib A' and in a
frame is a spur wheel on the shaft r² outside of the frame, which

page_text: communicates motion to the intermediate gear, and the latter with the
intermediate gear wheels on either side, which in turn engage with the
screw wheel. 7 is a flanged gear wheel on the end of the distributing
roller q, meshing with the screw gear wheel. This gear wheel 77 is
provided with an internal thread working on a stationary screw shaft r³,
by which it is moved laterally as it rotates, and imparts a corresponding
lateral movement to the distributing roller. The form rollers are driven
by frictional contact with the distributing roller. As the carriage G and
the rack attached thereto have a reciprocating motion, the distributing
roller receiving its motion therefrom must consequently have a recipro-
cating rotary motion, being reversed in its movements as the carriage
reverses. 7.10 is a rack attahed to the bed roller frame G¹, and gearing
into the pinion on the shaft 7 to secure the even travel of the bed
roller frame and prevent its gradually changing its position, which it
does when constructed in the usual manner.
of the boards or
The hinged portion of the feed table is counterbalanced by a weight
attached to a cord 6° which passes over a pulley suspended from the
ceiling immediately over the pivots or hinge b'. The front hinged
portion of the feed table is made with sections
panels constructed to be removable, to permit the point plate 68 to
be arranged between them at any required point. This point plate and
points are of ordinary construction. ' is the point shaft, provided with
a sliding arm 6 which elevates the points in the usual manner; 6™ is
an arm loosely mounted on the outer end of the point shaft with a
sleeve extending inside of the side bar b³, from which projects a short arm,
against the latter presses a spiral spring 613; 6" is a spring arm rigidly
attached to the shaft outside of the arm 6. This spring arm is pro-
vided with a spur on the side next to the arm 1, which is made to
engage with one of the two holes in the arm 610 by springing the arm 6"
outward. When the two arms are locked together by the spur engaging
in the front hole, the points are raised and held by the spring 6 which
presses against the shaft arm, except when depressed by the front guide
cam and connecting rod 61; when the spur is engaged in the rear
hole the position of the shaft is changed to prevent the arm b¼ coming
in contact with and elevating the point plates.

page_text: work loosely on the end of the hollow shaft n³. An arm v³ of this bell
crank is operated by a push rod z which presses against its under side.
This push rod passes through a guide bearing projecting from the frame
of the sheet counter, and rests with its lower end in the end of an arm o
working on a stud projecting from the cap of the side rod. This arm v²
is provided with a pin with which engages the cam ve attached to the
end of the printing cylinder and by which the front guides are elevated.
The connecting rod 6" for actuating the point shaft is jointed to the
bell crank v*, and acts in conjunction with the spring 6 to keep the
front guides pressed against the ends of the under guides 20. These
guides are fastened to adjusting screws " which screw through the
angle plate b, whereby the guides are adjusted longitudinally for the
purpose of regulating the margin and register.
The feed board lifter, rock shaft, and fly rest k is supported in bearings
made by extending the caps c³ forward.,, are the feed board lifting
arms, rigidly secured to each end of the shaft k and in line with the side
bars ³, which are lifted thereby in elevating the feed table. ³ is an
arm keyed to the outer end of the shaft k and connecting with the
extending arm k³ of the ring which embraces the eccentric k' on the
fountain driving wheel 6, whereby the shaft k is actuated and the feed
tablo elevated at every second revolution of the printing cylinder. * is
a bell crank pivoted to the central upright portion of the main frame,
one arm of which engages in a slot in the eccentric arm k³. The other
arm is grooved and receives the stud of the arm of the rock shaft k².
This rock shaft is supported in boxes formed with the hubs or sleeves k³,
through which the wrought-iron rods c" of the side rods pass, these
hubs serve as space blocks or standards for the frame w of the counting
device which rests thereon. The frame w is provided on its inner side
with a hub k in which is fitted the closing gripper stud 1, while a
corresponding hub projects from the inner side of the cap c³, and
forms the bearing for the opening gripper stud . With this stud, so
as to be actuated therewith, is connected the cam of the sheet lifter, as
will presently be explained. The stud is actuated by an arm k¹³
which projects upward from the shaft, the end passing up through a
slot in the hub kº and into a hole in the stud. The stud k¹ is actuated in
a similar manner by a corresponding descending arm at the end of the
same shaft. k, k¹³, are the grippers, and ¹ the gripper shaft of ordinary
construction. " is the gripper cam, and the cam spring, also of
•

page_text: lever w³, while the other presses against the sides of the push rod so as
to return the upper end thereof to its proper position after each engage-
ment with and movement of the numbering wheel. As the side rods
which support the boxes of the printing cylinder have a downward
movement only when the cylinder is depressed preparatory to printing a
slicet it is obvious that only the printing sheets will be recorded by the
counting mechanism, the latter remaining stationary so long as the
cylinder remains in its raised position.
I construct the side rods c¹ in a peculiar manner. The body consists
of a standard or post of cast iron formed with suitable openings or
recesses to receive the boxes cand c³ of the printing cylinder and rock
shaft c.
These posts are cast with a hole on each side extending the
whole length, through each of them passes a strong wrought-iron
rod that extends upward through a cap piece cat the top, as most
clearly shown in Figures 3 and 21.
The accurate register of the printing cylinder with the form is insured
by means of a lever pivoted to the edge of the cylinder head, the short
arm of which is formed into a tooth ¹, its pitch line of being; the
printing surface of the cylinder. This tooth engages between two teeth
formed in a block attached to the upper surface of the bed by set
screw's working through slots as represented or in any other suitable
manner. The long arm of the lever is constructed with a roller 2*
which engages in a grooved cam z formed in a block bolted to the
central upright portion of the main frame. The groove of this cam is
widened at both ends to facilitate the entrance of the roller when the
cylinder is revolved in either direction. The lever is limited in its
movement in either direction when its roller is out of the cam by. a
stop block attached to the head of the cylinder. The tooth being
pivoted allows it to yield as it comes in contact with the tooth of the
bed, when the cam which the roller has at this time entered forces the
tooth into its proper position at the moment it has fully entered the
block, which draws the cylinder and form into perfect register before
their surfaces have come in contact. The sheet bands a' are attached at
their upper ends to the stretcher rod, and at their lower ends to the
stretcher rod; is a sleeve fitted on a square stretcher bar 2", and
provided with an upwardly extending arm " which serves as a sheet
guide on this side of the cylinder; 3, ", are the spring friskets composed

page_text: of a flat metallic spring, one end of which enters a hole in the sleeve *",
between it and the stretcher bar on its under side, where it is secured in
place by a wedge a arranged within the sleeve on the upper side of the
rod, and tightened by a set screw as clearly shown. The opposite
end of these friskets rests free in the upper side of the stretcher rod a',
which is arranged to cause the friskets to press upward against the
cylinder at all times. Any desired number of these friskets and guide
arms may be arranged and adjusted on the stretcher rod, the friskets
being arranged to coincide with the spaces in the form.
To permit the inking tables d to be turned over or exchanged for
color work and to prevent warping or twisting of the surface from the
contraction or expansion of the wood I construct and secure the wooden
portion forming the table proper in the following manner:-The edges
of the table & at the grain end of the wood are formed with a central
groove d¹ in which fits a corresponding tongue d² formed with the
clamping bars d³, d', between which the table is secured in place. The
clamping bars & are fastened by screws to the sides of the form and
serve as locking bars for the form. The bars d' are fastened on each
end of the bed frame, and made adjustable to facilitate the removal of the
ink tables, and to take up any shrinkage. This mode of securing the
table allows the wood to shrink or expand equally on both sides while it
permits either surface of the table to be used as may be desired. a, a,
represent the different parts of the belt shifter which are constructed and
operate in the ordinary manner.
The following is a description of the points and electro-magnetic
apparatus by which the perfect register of the sheets preparatory to
printing the second side is insured:-s, Figures 11, 12, and 13, is a
square wooden cross bar supported in front of the hollow rod n³ by
arms s' attached thereto. This wooden bar is provided with a dovetail
grooves in which fits a nut 85. 50, 80, are two slotted point bars placed
transversely on the top of this bar near each end, and resting on metallic
blocks. They are secured in place by a set screw 8', which passes
through this block and screws into the nut. The nut and block &* being
movable allow the point bar to be adjusted to any required place along
the wooden bar, while the slot in the point bar allows it to be adjusted
forward or back. is a metallic wire or rod embedded lengthwise in
the wooden bar, so that the metallic blocks.s will rest in contact there-
with. is a sleeve attached to the rear ends of each point bar, in which

page_text: "
work rods & at whose lower end are the points &10. " is a pin projecting
from the rods through a slot in the sleeve, under which engages the
point elevating arm & presently to be explained. 818 is a rock shaft
pivoted between bearings extending from the ends of the point bar.
is an arm mounted on this shaft; and s¹³, a flat supporting spring
secured by the set screw & and washers, and slotted at its end; the forks
engage under studs that project from the sides of the lever. The
point elevating arm & is attached to the shaft &s. The spring & serves
to keep the arm 8¹³ disengaged from the point stud 8", so as to leave the
point free to descend by gravity except when elevated by the mechanism
herein-after explained; 8* is a lever secured on the front guide shaft.
The long arm of this lever is pressed upon the end of the arm 8" by the
front guide actuating mechanism. The pressure on the arm *** turns
the bar which engages the arm & with the point stud, and thus
elevates the point; " is a latch lever pivoted to an arm projecting from
the hollow pipe n³. The upper end is kept pressed forward toward the
front guide shaft so as to engage under the short arm of the lever by a
spring engaging with a shoulder or hook of the lever, as shown; 819 is
a set screw working through a nut bearing attached to the feed table
elevating arm ¹, and so adjusted that its end will press against the
lower arm of the lever s", as the feed table reaches its lowest point.
The front guide mechanism presses the lever 8 against the end of the
arm & for a moment only; the latch lever at this time engages under
the short arm of lever 86, and retains it in that position to give longer
time for adjusting the sheet until just before the feed board reaches its
lowest position, when the lower curved or inclined arm of the latch
comes in contact with the adjustable screw 80 which disengages the latch
from under the lever; then the spring 8" turns the shaft s¹ and point
elevating arm s¹² out of engagement with the point stud, which leaves
the point free to fall by its own gravity.
A duplicate of the apparatus above described is employed for
elevating the point at the opposite side; is a galvanic battery of any
ordinary kind arranged at a convenient point, that shown being under
the rear portion of the feed table; is an electro-magnet, and an
armature of ordinary construction arranged near the air passage leading
from the air pump to the pipe n³, preferably at the side of the bars 6³ as
shown in the Drawings; is one of the wires of the battery which
connects with the magnet (, whence it leads to a bar of platina

page_text: arranged in the face of the feed table, and under one of the points º¹; /* is
the other wire leading from the battery to another and similar platina
bar to arranged in the feed table under the other point. The points and
the platina connecting rod when both points are down and in contact
with the platina bars form a connection between the two wires, and
thus complete the circuit.
As the weight of the points is not sufficient to cause them to pierce
the sheet, it becomes evident that this circuit cannot be completed
except when the sheet is accurately fed to bring the point holes in the
sheet directly under the points, through which holes the points cau
descend unobstructedly, and thus come in contact with the platina bars.
The object of this mode of registering is to prevent the automatic
operation of the diaphragms herein-before described except when the
sheet is properly registered through the points $10. To accomplish this
object I close the air passage in the bar ³ by a valve which is opened by
the magnet; the circuit is then completed by the points coming in
contact with the platina bars. This valve and the means for connecting
it with the armature of the magnet by which it is operated may be of
any suitable kind and construction. As represented in the Drawings
the air passage in the bar 3 is provided with a transverse partition (",
and lateral openings or slots on cach side of it for the passage of the air.
This passage around the partition is closed by a valve. As represented
in Figure 12, the valve (12 is fitted in a sleeve t¹³ and attached directly to
the armature which pulls it from its seat when the circuit is completed,
and thus opens a free communication for the air from the air pump to
the diaphragms which now operate to couple and engage the parts as
herein-before described when printing a sheet on its first side. t is a
reacting spring which engages with a pin " projecting from the valve
through a slot in the sleeve, and closes the valve after the circuit has
been broken; 820 is a curved guard attached to the sleeve &³, and
arranged to leave barely sufficient space between it and the feed table
for the passage of the sheet. The point 5" which is made of platina
works alongside of this guard, and when elevated the lower end of the
point should be a little more than flush with the under surface of this
guard. The operation of this guard keeps the sheet down on the table,
and insures the disengagement of the point from the sheet as the former
is raised; it also causes the sheet as it passes under the guard in contact
with it and the point to wipe the tip of the latter, and thus keep it clean

page_text: platina bar.
As the valve in the device above described is opened only when a
sheet properly fed permits both points to come in contact with the
platina bars underneath them and complete the circuit, it is obvious
that when a sheet is improperly fed additional means must be cinployed
to open the valve and insure the operation of the diaphragm o³ through
which the fly is released and permitted to discharge such improperly fed
and unprinted sheet. To accomplish these objects I attach an arm (1 to
the point shaft and secure to the under side of the feed table in contact
with the wires t³ and respectively platina blocks t", 18, and attach to
the block ta spring, the free end of which extends under and nearly
in contact with the other block. These parts are arranged to cause the
arm when moved by the point shaft to press the free end of the
spring against the platina block 18, which thereby completes the circuit,
opens the valve, and permits the suction in the air passage to operate the
diaphragm o³ and release the fly. But as this opening of the valve and
air passage does not take place until after the sheet has been gripped
and the cam lever m³ moved, the coupling of the segment m³ with the
latter by the diaphragm m is prevented.
Figures 11 and 13 shew a different construction and arrangement of
parts for actuating the valve of the air passage, although I prefer the
device above described. In this arrangement a slide valve (12 is fitted
loosely on a rod t20 which is supported by pivot pins whereon it is
allowed a short sliding movement. An elliptic spring placed
between this rod and the valve keeps the latter pressed against its seat.
The armature is hinged at one end and provided with a shoulder or
stop, against which a flange or arm of the valve is pressed by a spiral
spring on the valve rod when the valve is closed. The armature is
pressed against the valve by a curved spring ". When the circuit is
completed the magnet draws the armature to it, disengages the stop ³,
and permits the sprial spring to slide and open the valve.
The valve is closed by the following means:— -t is a lug on the rod *;
and is a hinged stop block pivoted to the rod at 7 and provided with
a stop pin projecting over the top of the rod by which the free end of
the block is supported. There is a small space between the lug and the
edge of this block; (2) is a curved arm attached to the point shaft, and,

page_text: Second. When the sheet is properly fed the hollow feet will all be
closed by the sheet which is drawn against the apertures therein by the
suction of the air pump that at this time produces suction through
the air passage leading thereto, which passage is made air-tight except
at the apertures in these feet. The air passage which leads from the
air pump to the diaphragms being thus closed by the sheet, the pressure
of the external air against the diaphragm m³ causes the pin m¹ attached
thereto to press against the coupling bolt m¹, which in turn couples the
segment m³ and cam lever m together. While the segment and cam
lever m³, m³, are thus engaged the movement of the reciprocating
rod p that operates the coupling of the intermediate fountain driving
shaft p is not sufficient to uncouple the shaft which thus operates the
fountain, as herein-before described. As the air passage extends from
the diaphragm m, to the diaphragm o³, the pressure of the air also
causes the latter to push out the stud o*, to engage with the fly releasing
cam m³, which lifts the hook arm o and liberates the arm of the bell
crank o and the fly connected therewith, leaving the latter free to
operate. The mechanism being thus connected through the medium
of the sheet as it closes the aperture in the feet no, the sheet is seized
by the grippers, and the rock shaft c turned to bring the centre of the
crank downward; the latter through the medium of the side rods draws
the cylinder down in contact with the form, with which it is brought in
accurate register by the tooth and notch, ³, and an impression is
made. While the sheet passes from the feed table to the form the
guide protects it from contact with the distributor and form rollers;
and the spring friskets by pressing the sheet against the cylinder expel
the air between them before the sheet comes in contact with the form,
and thereby prevents the smutting of the sheet resulting from the
sliding motion of the sheet on the face of the type before the impression
point is reached, as shewn in Figure 7.
The sheet having received an impression passes upward with its wet
printed side uppermost to the feed table, which is raised by the arms k¹
before the sheet reaches it to permit the sheet to pass without being
soiled by contact with the under side of the edge of the table. The
front edge of the sheet after it passes the summit is released by the
opening of the grippers, while at the same time the sheet lifters which

page_text: the latter deposits it with the printed side down on the fly table, the
sheet having been recorded by the counting device which is actuated
by the downward movement of the side rod c'. After the impression
is made the rock shaft and cylinder are returned to their normal
position; the segment m³ and the cam lever m² are uncoupled by the
wiper m* sliding back the coupling pin, and the suction in the air
passage leading to the diaphragms continuing only until the carriage
begins to reverse, the diaphragm pin o' is returned to its former position
by the side cam o¹ that leaves the hook o" free to engage with and
lock the bell-crank arm through which the fly is actuated.
Third. When the sheet is improperly fed it will cover one or more
of the apertures in the feet, and project far enough in front to be seized
by the grippers; but it will not cover all the apertures in the fect.
In such case the air which enters the uncovered feet will partially
counterbalance the pressure on the diaphragms. The pressure of the
brake block against the coupling bolt m is so regulated that when
any of the apertures in the feet are left uncovered by an improperly fed
sheet, the pressure of the air against the diaphragm m3 will be
insufficient to slide the bolt and couple the segment with the cam lever.
By the time the sheet has advanced sufficiently to cover all of the feet,
the cam lever m² will have commenced its movement, which will prevent
the coupling bolt locking it to the segment. These parts not being
coupled together the cylinder remains elevated and the sheet passes
around with the cylinder without being printed. Although only one or
two of the feet are covered by an improperly fed sheet, the pressure
against the diaphragm of the fly retaining hook is sufficient to move
the stud o, which is fitted loosely in its bearing and causes the cam m³
to engage with it, and thus elevate the hook arm o and release the fly
which deposits the unprinted sheet misplaced on the pile as herein-
before described. The cylinder not being depressed, the sheet counter
remains at rest while the movement imparted to the rod p" by the
lever p and disconnected segment and cam lever is sufficient to
uncouple the clutch p, p, whereby the operation of the fountains is
also arrested.
No additional ink being supplied to the inking tables during the
passage through the press of an unprinted sheet, the repeated passage
of the form rollers over the form does not operate to over ink it, as each
form voller when my double inking annaratus is emploved carries less

page_text: ink than the form requires, and consequently will cease to deposit ink
on the form after the first passage over it.
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. The combination in a printing press of an air pump, an air
passage leading to said pump, and one or more branch air passages from
said main air passage, so arranged with reference to the front guides that
a sheet when properly fed will close the said branch passages, as and for
the purposes herein set forth.
Second. The combination with the said air pump, main air passage,
and branch air passages of a diaphragm and coupling connected with
the main air passage and the rock shaft which depresses the printing
cylinder, in such a manner that the diaphragm will be actuated by the
air pump and engage the coupling, and thereby. operate the said rock
shaft and depress the printing cylinder only when all of the branch air
passages are closed by a properly fed sheet, the coupling remaining
disconnected and the cylinder in a raised position when a sheet is
improperly fed, as herein set forth.
Third. The combination with the rock shaft cand segment i of the cam
lever m', segment me, diaphragm and bolt m³, m", and coupling bolt 11,
as herein set forth.
Fourth. The combination with the coupling bolt m and spur m¹ of
the wiper or cam m³, as hercin described.
Fifth. The combination with the segment m and coupling bolt m¹ of
the brake block and adjustable spring m, m, as herein described.
Sixth. The combination with the segment m³, cam lever m³, and
coupling bolt m¹ of the cam or incline m", as herein set forth.
Seventh. The combination with the side bars 63 and front guides of
the air pipe n³, and hollow adjustable feet constructed to guide the sheet
thereunder, as herein described.
Eighth. The combination of the sieve with the hollow feet for pre-
venting the entrance of lint or other foreign substance into the air
nassa.

page_text: Ninth. The combination with the hollow feet and feed table of the
spring sheet guides n¹³, as herein described.
Tenth. The combination with the air cylinder and solid piston of the
hollow valve piston and actuating weight connected therewith, as herein
set forth.
Eleventh. The combination of the air pump with the carriage G
which actuates the solid piston thereof, as herein described.
Twelfth. The combination with the bell crank o' of the fly retaining
hook o, as herein set forth.
5
Thirteenth. The combination of the hook arm o, diaphragm and 1
bolt o³, o, and cam m³, with the air pump and air passage connected
with the said diaphragm, as hercin set forth.
Fourteenth. The combination of the side cam o with the hook arm o
and diaphragm bolt of, as herein described.
Fifteenth. The combination with the rock shaft c and bell crank of of 1
the sliding roller bar o³, arm o", and link o", as and for the purpose
herein set forth.
Sixteenth. The combination with the fountain driving shaft p™ and
clutch coupling thercon of the sliding bar p", lever p², segment mº, and
cam lever m², for disengaging the fountain driving mechanism when a 2
sheet is improperly fed, as herein set forth.
Seventeenth. The combination with the sliding bar 2 of the rebated
collars p, p, capable of being readily adjusted to mesh into cach other
to permit the operation of the fountain in getting ready the press before
printing, as herein set forth.
Eighteenth. The arrangement of the reacting spring p with tho
sliding rod p and clutch p, p, as herein described.
Nineteenth. The combination with a counting device of the push
2
rod and the lever w³, the latter connected with the frame, and the
side bar to be actuated only cach time the cylinder makes an impression, 3
as herein set forth.
Twentieth. The combination with the air passage and pneumatic
coupling of a valve in the said air passage, an electro-magnet for
opening the said valve, connecting registering points, and connecting

page_text: wires, so arranged that when a sheet is properly registered the points
will be brought in connection with the wires to complete the circuit,
thereby permitting the pneumatic apparatus to operate, as herein set
forth.
Twenty-first. A register point arranged above the feed table to
descend by gravity into the point hole substantially as herein set
forth.
Twenty-second. The combination with the valve and electro-magnet
of the reacting spring t, as hercin described.
Twenty-third. The combination of the point bars & with the cross
bar s, connecting rod s³, and platina bars t, as herein set forth.
Twenty-fourth. The combination of the point rod 5, rock shaft s¹³,
connecting arms s¹¹, &¹², arms ", and actuating arm s*, on the front
guide shaft for raising the points, as herein set forth.
Twenty-fifth. The combination with the hinged portion of the feed
table, table elevating arm k³, and point elevating lever s* of the spring
latch levers, and screw stop 8" for retaining the points in a raised
position, as herein set forth.
Twenty-sixth. The combination with the gravity point rod 8, rock
shaft ¹³, and connecting arms 8", 1, of the arm and spring 5, 5, for
disconnecting the point rod, as herein described.
Twenty-seventh. The combination of the wires 13, 1, connecting
spring, and spring engaging arm te on the point shaft, for completing
the circuit, as herein set forth.
Twenty-eighth. The combination of the guard 8" with the point 810 and
feed table, as herein set forth.
Twenty-ninth. The combination with the printing cylinder and bed of
two sets of form and distributing rollers arranged on opposite sides of
the cylinder, and receiving ink independently of each other, whereby the
form is rolled from opposite ends and the ink evenly applied thereon, as
herein set forth.
Thirtieth. The combination with the front hinged portion of the feed
table of the arms k³, k³, k³, and eccentric /* for elevating the feed table
to permit the passage of the printed sheet, as herein set forth.
5

page_text: Forty-second. The combination with the fly and the pulley e² of the
strap e³, weight e', and brake pulley e, the movement of the latter being
limited to act as a brake for the strap which slides thereon at each
extreme of movement, as herein set forth.

page_text: cross stay of the cylinder, supporting and counterbalancing levers and
weights, arranged as herein set forth.
Fifty-second. The side bars c¹ consisting of a cast body provided with
apertures for the boxes of the rock shaft and printing cylinder, the cap
picces at the top and the tie rods of wrought iron which secure the whole
together, as herein described.

page_text: Sixty-second. The arrangement of the ink fountain between the angle
ollers and the printing cylinder, as herein set forth.
In witness whereof, I, the said William Robert Lake, have hereunto
set my hand and scal, this Seventeenth day of July, in tho
year of our Lord One thousand eight hundred and seventy-
two.
Witness,
WILLIAM JOHN LOWE.
W. ROBT. LAKE. (L.S.)