An Improved Machine for Taking Prints or Impressions from Prepared Lithographic Stones, Engraved Blocks, and the like, and Setting Off such Prints or Impressions upon Glass, Wood, and other Rigid Substances.
Year: 1895

page_text: Date of Application, 18th Nov., 1895
Complete Specification Left. 18th Aug. 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
An Improved Machine for Taking Prints or Impressions from
Prepared Lithographic Stones, Engraved Blocks, and the like,
and Setting Off such Prints or Impressions upon Glass, Wood,
and other Rigid Substances.
We COSMAN HENRY COHEN of No. 19 Paul Street Finsbury in the County of
London Printer and SAMUEL MARK of No. 18 Clifton Street Finsbury aforesaid
Engineer do hereby declare the nature of this invention to be as follows:-
Our invention consists of the improved machine hereinafter described for taking
prints or impressions in pigments or inks or other materials from prepared
lithographic stones engraved blocks and the like and setting off such prints or
impressions upon sheets of glass panels of wood earthenware tiles bricks and other
articles having plane surfaces and consisting of substances too rigid for properly
receiving direct prints or impressions from lithographic stones engraved blocks and
the like the object of our said invention being to ensure the production of superior
results with rapidity and facility.
The said improved machine consists of a frame suitably formed for supporting
or holding in the required positions a slab or plate or table on which the pigment or
ink or other printing material is distributed and a prepared lithographic stone or
engraved block or the like (hereinafter termed "the design") from which the
print or impression for setting off is to be taken and a support for the article on
which the print or impression obtained from the design is to be set off which
support is provided with means for holding the said article (hereinafter termed
"the work") in the required position and (where lithographic stones are to be
used) an appliance of the kind ordinarily used for damping. The means for
receiving the impression from the design and setting off the said impression on the
work consists of a cylinder faced with a suitable elastic or yielding material and
mounted in a suitable carriage supported by and working on the frame of the
machine, the arrangement of the said carriage being such as to admit of the said
Provision is also
cylinder being moved to and fro over the design and the work.
made for causing or preventing rotation of the said cylinder according to require-
ments while being so moved. The arrangement for causing reciprocatory or to
and fro motion of the cylinder over the design and work consists of toothed wheels
engaged with racks affixed to the frame of the machine and with other racks
secured to the cylinder carriage which toothed wheels are so connected to the
driving shaft of the machine through intermediate mechanism that by rotation of
the said shaft they are caused to travel to and fro on the said tixed racks the
required motions being imparted to the cylinder carriage by the engagement of the
said toothed wheels with the racks on the said carriage. To provide for rotation
and non-rotation of the cylinder as and when required during motion of its carriage
as described toothed wheels are mounted on the shaft or axis of the said cylinder
and lacks are formed on or affixed to the frame of the machine with which racks
the said toothed wheels gear and mechanism is at ranged between the said cylinder
and one of the said wheels or in other convenient position by means of which the
said cylinder may be connected with or disconnected from the said wheels either
automatically or otherwise as may be desired. The rollers required for damping
and those required for conveying to the design the pigment or ink or other material

page_text: in which the impression or print is to be taken are mounted in the cylinder carriage
and the rollers required for distributing the said pigment or ink or other material
are mounted in a separate carriage and provision is made for automatically
removing the said rollers or some of them from their acting position when
necessary. The required motion is communicated to the carriage of the distributing
rollers from the mechanism by which the cylinder carriage is actuated. The parts
of the machine which control or govern the motion of the cylinder are so formed
and arranged as to cause contact of the said cylinder with the design and with the
work in its forward motion.
Dated this Eighteenth day of November 1895.
W. T. WHITEMAN,
Agent for the Applicants.
An Improved Machine for Taking Prints
or Impressions fron
Prepared Lithographic Stones, Engraved Blocks, and the like,
and Setting Off such Prints or Impressions upon Glass, Wood,
and other Rigid Substances.
We COSMAN HENRY COHEN of No. 19 Paul Street Finsbury in the County of
London Printer and SAMUEL MARK of No. 18 Clifton Street Finsbury aforesaid
Engineer 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 :-
Our invention consists of the improved machine hereinafter described for taking
prints or impressions in pigments or inks or other materials from prepared
lithographic stones engraved blocks and the like and setting off such prints or
impressions upon sheets of glass panels of wood earthenware tiles bricks and other
articles having plane surfaces and consisting of substances too rigid for properly
receiving direct prints or impressions from lithographic stones engraved blocks and
the like the object of our said invention being to ensure the production of superior
results with rapidity and facility.
The said improved machine consists of a frame suitably formed for supporting
or holding in the required positions a receptacle for the required pigment or ink or
other printing material and a slab or plate or table on which the said pigment or
ink or other printing material (hereinafter termed the "ink ") is distributed and a
prepared lithographic stone or engraved block or the like (hereinafter termed
"the design") fi om which the print or impression for setting off is to be taken and
a support for the article on which the print or impression obtained from the design
is to be set off which support is provided with means for insuring the placing of
the said article (hereinafter termed "the work") in the required position aud
(where lithographic stones are to be used) an appliance of the kind ordinarily used
for damping. The means for receiving the impression from the design and setting
off the said impression on the work consists of a cylinder faced with a suitable
elastic or yielding material and mounted in a suitable carriage supported by and
working on the frame of the machine the arrangement of the said carriage being
such as to admit of the said cylinder being moved to and fro over the design and
the work. Provision is also made for causing and for preventing rotation of the
said cylinder according to requirements while being so moved. The arrangement
for causing reciprocatory or to and fro motion of the cylinder over the design and
work consists of toothed wheels engaged with racks affixed to the frame of the
machine and with other racks on the cylinder carriage which toothed wheels are so
connected to the driving shaft of the machine through intermediate mechanism.
A

page_text: that by rotation of the said shaft they are caused to travel to and fro on the said
fixed racks the required motions being imparted to the cylinder carriage by the
engagement of the said toothed wheels with the racks on the said carriage. To
provide for rotation and non-rotation of the cylinder as and when required during
motion of its carriage as described toothed wheels are mounted on the shaft of the
said cylinder and racks are affixed to portions of the machine with which racks the
said toothed wheels gear and mechanism is arranged between the said cylinder and
one of the said wheels or in other convenient position by means of which mechanism
the said cylinder may be automatically connected with or disconnected from the
said wheels when requisite. The rollers requited for damping (hereinafter termed
damping rollers") and those required for conveying to the design the ink in
which the impression or print is to be taken (which rollers are hereinafter termed
"inking rollers") are mounted in the cylinder carriage. And the roller (herein-
after termed the "receiving roller ") by which ink is conveyed from the ordinary
ink duct roller and transferred to the distributing table and the rollers (hereinafter
termed distributing rollers) by which the ink transferred to the said table is
distributed thereon are mounted in another carriage to which motion 13 com-
municated from the mechanism by which the cylinder carriage is actuated.
Provision is made for automatically removing the said rollers or some of them from
their acting position when necessary. The parts of the machine which control or
govern the motion of the cylinder are so formed and at ranged as to cause contict
of the said cylinder with the design and with the work in its forward motion. The
mechanism herein before described or referred to whereby we provide for non-
rotation of the cylinder during motion of its carriage admits of the rollers
hereinbefore referred to or certain of them being maintained in their acting
po-ition.
Figure 1 of the accompanying drawings is a side elevation Figure 2 is a olan
and Figure 3 is an end elevation of the said improved machine certain puts being
omitted as hereinafter stated. Figures 4, 5, 6, 7, 8, 9, 10, 11 and 12 represent
portions of the said machine drawn to a larger scale than the said Figures 1, 2
and 3.
In the following description the said drawings are referrel to by the letters anu
figures marked thereon. The same letters and figures of reference in licate the
same parts in all the said figures.
"
aa a a³ are the main parts of the frame of the machine which is shown as
resting on girders bb. cis the slab or plate or table on which the ink is distributed.
d is the support for the prepared lithographic stone or other design. e is the "feed
table or support for the work or article on which the impression received from
the design is to be set off and is the damping table. The said parts c d e f are
stationary that is to say no motion is imparted to them during the working of the
machine and they are supported by bearers at a secured to the end frames a³ aª
and to a transverse frame a which is connected at its lower parts only to the lower
parts of the side frames aa¹. By thus supporting the said parts c d e f unobstructed
spaces are left between them and the side frames a a' in which spaces certain of the
moving parts hereinafter described work. The height of the parts de is capable
of adjustment by means of screw actuated wedge blocks situated between them and
frames e in which they respectively rest and which are secured to the said
bearers a a¹. The arrangements referred to by which adjustment of the said
parts de is provided for are the same as those by which the corresponding parts of
lithographic printing machines of ordinary construction are adjusted and they are
used in the ordinary manner therefore it is unnecessary to describe them and in
order to avoid confusion in the drawings only such parts of the adjusting arrange-
ments are illustrated as are exposed to view which parts are the two screwel rods
for adjustment of the wedge blocks of the design support d which screw: rals are
marked d d and the screwed rod for adjustment of the wedge blocks of the feed
table e which screwed rod is marked e³.
A convenient arrangement for ensuring accurate "lay" of the work where

page_text: impressions from several designs are required to be set off on the same plate or
slab is illustrated on the feed table e in Figure 2. The said arrangement consists
of stops e³ ³ secured near the edge of the said table which is farthest from the
attendant and projecting above the face thereof against which stops one edge of
the work is to be placed and of a stop e secured at right angles to the stops ³ ³
for one of the adjacent edges of the work to bear against which stop e consists of
a strip of metal or other suitable material having holes in it the positions of which
correspond with those of several series of holes ee in the table c. Ready placing
of the work in the required position and ready alteration of the position of the
stop e according to the size of work in hand are thus provided for.
g is the duct or trough for containing the ink to be applied to the design and
g is the roller (herein termed the "duct roller") by which the contents of the said
duct are withdrawn the said parts g and g¹ being formed and arranged and fitted
and supported by and secured to the side frames a a¹ as in ordinary lithographic
printing machines. is a pawl carried by a hand lever ¹ and 2 is a ratchet by
which pawl and ratchet the duct roller g¹ is rotated to effect withdrawal of the
contents of the duct g. The said pawl and ratchet which are arranged and act in
the ordinary manner are actuated during the working of the machine by means of
the connections hereinafter described.
i is the cylinder by means of which the impression is received from the design
when charged with ink and by means of which the said impression is set off on the
work the said cylinder being formed of metal and affixed to a shaft i having a
facing of suitable yielding material secured to it by ordinary or other convenient
means which are not illustrated and do not need description. The carriage
supporting the said cylinder i consists of a pair of frames i respectively mounted
and capable of travelling on slides as a formed on the side frames a a¹ of the
machine. The said frames have slots formed in them for reception of the
spindles of the damping rollers and the inking rollers which rollers are not shown
in the drawings and in the said frames are mounted sliding brasses in
which the bearing parts of the cylinder shaft i¹ work the said brasses being pressed
downward by means of strong springs one of which is shown at in Figure 1.
are screws by means of which the degree of compression of the said springs
may be regulated according to requirements. J are the toothed wheels of the
arrangement for causing reciprocatory or to and fro motion of the cylinder carriage
over the design and over the work. kk are the racks on which the said wheels jį
travel which racks are affixed to the lower parts of the inner sides of the frames a a¹
of the machine and are the racks on the cylinder carriage with which
racks kk the said wheels jj gear and thus produce the required motions of the
cylinder carriage. In order to plainly show the positions of the said racks k k l V
portions of the framing of the machine are represented broken away in Figures 1
and 3. m is the driving shaft of the machine from which shaft the wheels jj are
actuated through the medium of pinions (one of which is shown at n in Figure 1)
and toothed wheels o o gearing with the said pinions and rods o' o' connected to
crank pins on the wheels oo and to the axle of the travelling wheels the weight
of the said rods of being balanced by counterpoises secured to the wheels o. o. as
shown at oo Figure 1. The said wheels oo are mounted in plummer blocks
secured to bearers supported by the end frame as of the machine and by the
transverse frame as one of the said blocks and one of the bearers supporting them
being shown in Figure 1 and marked respectively o² 0³. pq are the toothed wheels
on the cylinder shaft the wheel being loose on the said shaft and the wheel
being keyed thereto. are the racks with which the said wheels respectively
gear and by so gearing normally cause rotation of the said cylinder during motion
of its carriage in the direction indicated by the arrow in Figure 1 which is the
forward motion. The said racks are secured to the frames de in which the
parts de are mounted and which as herein before stated are supported by bearers a a
secured to the end portions a² a³ of the frame of the machine. The length of the
rachs k k and r r and the diameters of the wheels o ojj p q bear such relation to

page_text: each other that the cylinder i. is caused to travel from the position shown in
Figures 1 and 2 to the forward edge of the feed table during one half rotation of
the wheel o and is caused to rotate twice while so travelling one rotation of the
said cylinder being performed while it is passing over the design (during which
rotation the impression from the design is received by the said cylinder) and the
second rotation being performed while the cylinder is passing over the feed table
during which rotation the impression received on the cylinder is set off on the work
supported by the said table.
The following describes the means by which rotation of the cylinder i according
to requirements is provided for and the mechanism admitting of motion of the
cylinder carriage without rotation of the cylinder and of stoppage of rotation
of the said cylinder when necessary portions of which niechanism are illustrated in
Figures 4, 5, 6, 7, 8 and 9 Figure 4 being a transverse section of part of the
machine taken on the line A Figure 1. Figure 5 a section taken on the line B
Figure 4. Figure 6 a detail hereinafter referred to Figure 7 a side view of parts
of the machine Figure 8 a plan view of the same parts and Figure 9 a section
taken on the line C Figure 8.
Rotation of the cylinder while its carriage is moving forward (i.e. towards the
feed end of the machine) is due to communication thereto of motion from the
wheel by engagement of a pawl pl nounted on a pin p' carried by the said
wheel with one face of a projection 8 formed on the said cylinder i which pawl is
normally maintained in its acting position by a spring and during the greater
part of the forward motion of the said carriage rotatory motion is also com-
municated to the said cylinder by the, wheel q which is keyed to the shaft of the
said cylinder and gears with the rack' but during a portion of the said motion of
the said carriage the said wheel g does not communicate motion to the cylinder the
reason being that the teeth at one part of its periphery are cut away as shown
in Figure 9 for the purpose of admitting of non-rotation of the cylinder when
necessary as hereinafter explained. Figure 6 is a separate view of the pawl pl
and the parts carried by it which are hereinafter described the said pawl being
shown in the said Figure 6 in the same position as in Figure 4.
The mechanism whereby non-rotation of the cylinder during forward motion of
its carriage is provided for consists of a pin p' carried by the free end of the
pawl p and passing through a slot p in the said wheel and projecting beyond the
outer face thereof the outer end of which pin carries a roller p° which is brought
once during each rotation of the wheel p immediately over a levers carrying a
roller s' and affixed to a rocking shaft s working in the sliding frames constituting
the cylinder carriage. The said levers is normally supported in the position
illustrated in Figure 5 by the bar t on which the said roller s' rests which bar tis
carried by arms t' t' jointed at their lower ends to the frames d' e¹ in which the
tables de are mounted and is connected by a link t* (see Figures 1 and 2) to a
cranked handle lever t³ mounted at the feed end of the machine and provided with
on ordinary locking catch. By depression of the said handle lever the bar t and
the levers are raised which lever then stands in the path of motion of the roller p
the effect being that when the said roller is brought by rotation of the wheel p
to the position shown in Figure 5 the pawl p' carrying the said roller is disengaged
from the protection on the cylinder which is then out of gear with the wheel
and ceases to rotate with it. At the time when this action takes place (i.e. when
the pawl pis disengaged from the projection by contact with the lever s) the
toothed wheel q at the opposite end of the cylinder shaft is in the position shown
10 Figure 9 consequently the said wheel cannot communicate inotion to the
cylinder and any motion of the said cylinder due to its momentum is prevented by
contact of a stud u projecting from the inner face of a wheel or drum u¹ keyed to
the end of the shaft with a hook on the end of a lever v jointed to a rod vl
mounted in a bracket secured to the part of the cylinder carriage which
lever and rod are normally kept in the positions shown in Figure 7 by
springs but by engagement of an arm on the rocking shaft with a

page_text: 1
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finger secured to the hooked lever the latter is raised into the path of motion
of the said stud u simultaneously with the rising of the levers at the other side of
the machine the rising of which lever is due (as herein before stated) to the rising
of the bar t when the cranked handle lever t at the feed end of the machine is
actuated.
As it is important that rotation of the cylinder be arrested when the wheel q is
in such a position relatively to the rack that the teeth of the said wheel shall be
entirely clear of the teeth of the said rack as shown in Figure 9 the drum ¹ is
furnished with a spring actuated brake u³ which brake is mounted in a bracket
affixed to the part of the cylinder carriage. To admit of adjustment of the
degree of friction produced by the said brake a screw thread u³ is formed on its
stem u and lock nuts u³ ³ are engaged with the said screw thread the lower of
which nuts bears on the actuating spring us. By variation of position of the said
nuts us the required adjustment may be effected.
With the object of preventing any recoil of the cylinder and wheel when
arrested by the stop v already described (which recoil would or might cause
engagement of the teeth of the wheel and rack ¹) another stop acting in the
opposite direction is provided which other stop consists of a rod w mounted and
capable of up and down motion in the bracket and pressed upward by a spring w
and carrying at its upper end a roller w³ against which the curved face of the
projection u on the outer face of the drum u bears (thereby depressing the rod to
and compressing the spring o¹) when by rotation of the cylinder shaft ¹ the said
projection u is being carried over the roller w³. Immediately the said projection u
has passed over the said oller w the rod w carrying it is forced upward by the
spring wo and the said roller then stands in the position shown in Figure 7 and
thus prevents recoil or backward notation of the cylinder shaft and the wheel
and other parts carried by the said shaft.
From the foregoing it will be seen that the stop mechanism described with
reference to and illustrated in Figures 4, 5, 7, 8 and 9 of the drawing, admits of
the cylinder carriage being moved backward and forward without rotation of the
cylinder and also enables the attendant at the feed end of the machine to prevent
oi arrest rotation of the cylinder without stopping the machine when the toothed
wheels y carried by the cylinder shaft are in the positions represented in
Figures 5, 7 and 9 which are their positions both when the cylinder carriage has
completed its backward motion and is on the point of returning and when it has
completed one half of its forward traverse the cylinder having in the latter
case completed one forward rotation during which it has received the impression
from the design and being on the point of commencing a second forward rotation
duing which the impression so received will be set off on the work. It will thus
be seen that if before the said second forward rotation begins the attendant should
have been unable to place the work in the position required for properly receiving
the impression or if for any other reason it be desirable that the impression should
not be set off on the work during the continued forward motion of the cylinder the
said second rotation of the cylinder and the consequent setting off of the impression
on the work may be prevented by depression of the cranked handle lever t the
cylinder being them by the continued motion of the machine carried over the work
without rotating and without coming in contact with it.
When the cylinder carriage 23 arrives at the end of its forward stroke after
setting off on the work the impression received from the design the wheel q comes
to rest in the position shown in Figure 9 and during the return motion of the
cylinder carriage the consequent reversal of direction of rotation of the wheel p
causes the pawl p₁ to be carried past the projection on the cylinder without
engagement therewith therefore the cylinder does not rotate while its carriage is
moving back to the position shown in Figures 1 and 2 but is carried over the feed
table and the design without touching them.
The means provided for raising or removing the rollers mounted in the cylinder
carriage from their acting position when necessary are as follows. The damping

page_text: rollers are prevented from coming in contact with the distributing table c and the
feed table e by bars c' c' and at the outer sides of the said tables which bars
are situated in the paths of motion of runners carried by the spindles of the said
rollers and cause them to rise when passing over the said tables. The inking
rollers are normally kept out of contact with the damping table and feed table e
by means of bars on which runners carried by the spindles of the said rollers
travel. The bearing faces of the said bars being of greater height at the parts.
adjacent to the said tables than at their rearward parts (as shown in Figure 1) the
said rolleis when travelling over them are carried clear of the said tables but while
the said bars are in the position shown in the said Figure 1 (which is their
normal position) the said rollers when travelling over the lower parts of them are
in position to receive ink from the distributing table and to charge the design.
therewith. To provide for the inking rollers carried by the cylinder carriage
being kept out of their acting position when the machine is required to be run
solely for the purpose of causing action of the receiving and distributing rollers
each of the bars a' is mounted on a set of cranked levers one set of which levers
is illustrated in Figure 1 and marked the levers ³ ³ being jointed to the
frame of the machine and the levers being affixed to a rocking shaft.r¹
crossing the machine as illustrated in Figure 2 and the two sets of levers are:.
respectively connected by rods one of which is illustrated in Figure 1 and
marked and the said rod is connected to a cranked handle lever at the feed
end of the machine which lever when raised is retained in position by a projection
or stop at the upper part of a segment secured to the side frame a and when
depressed is retained in position by engagement with a recess at the lower part of
the said segment. By means of the said lever the bars may be retained in
their normal position as shown in the said Figure 1 or be raised to such a height.
above the said position as to cause the inking rollers mounted in the cylinder
carriage to pass over the design and the feed table without touching or acting.
thereon.
The carriage for the receiving roller and the distributing rollers consists of a
pair of frames yy respectively mounted on the slides as a on which the cylinder
carriage works to which frames reciprocatory motion is imparted from the axle of
the wheels through the medium of connecting rods y¹y¹ and y² y' and levers y³ y³.
By this means the extent of traverse of the said carriage is limited to the portion
of the machine where action of the rollers carried by it is required.
18 the
receiving roller which is carried by arins y'y' secured to a rocking shaft y working
in the frames y y.
In order to cause the said roller to become thoroughly
charged with ink from the duct roller g¹ guides 9² gª are mounted below the said
duct roller g on which guides runners g³ ³ on the shaft of the roller y' travel when
the carriage y is completing its backward motion and beginning its advance motion.
The arrangement of the said guides is fully illustrated in Figures 10, 11 and 12
of the accompanying drawings which figures represent a portion of one side of the
duct end of the machine drawn to a larger scale than Figures 1, 2 and 3 Figure 10
being a plan of the said portion Figure 11 an elevation thereof taken from the
car of the machine and Figure 12 a section taken on the line D Figure 2. As.
shown in the said Figures 10, 11 and 12 each of the said guides g' g³ is supported
by cuiled springs g*g*g* placed around pins 9° 9° 9° working in sockets formed on a
support which also forms the support for the duct g and each of the said
guides g is further supported or steadied by means of a pin 97 engaged with a
slot and having a nut 9' screwed on its end. By means of the said guides 93³ gª³
the receiving roller y is caused to travel round a considerable portion of the
charged surface of the duct roller g¹ and is at the same time pressed forcibly into
contact therewith and thus becomes effectually charged with ink. The distributing
rollers which are not shown in the drawing are supported by engagement of the
end portions of their spindles with the slots yy of the frames yy. y (see .
Figure 12) is a stop which limits the downward motion of the receiving roller y*..
Those of the parts hereinbefore referred to and marked 9'y'y'y' which would be,

page_text: partly seen from the feed end of the machine are not illustrated in Figure 3 in
order that the parts illustrated in the said figure may be the more clearly seen.
By mounting the receiving and distributing rollers in a carriage separate from
the cylinder carriage and actuating the roller carriage as described the traverse of
the said rollers is limited to the portion of the machine where they are required to
act (i.e. between the ink duct and the forward edge of the distributing table)
consequently access to the design is not impeded by the working of the roller
carriage or of the rollers carried by it.
The ink duct g is of ordinary construction and therefore does not need
description. The mechanism by which motion is communicated to the ratchet
pawl of the duct roller g¹ is best shown in Figure 1. The said mechanism
consists of a lever jointed to the bearer o³ and carrying an anti friction roller
situated in the path of motion of a cam o on the shaft of the toothed wheels oo
which lever is kept in contact with the said cam and shaft by means of a spring h*
and is connected through the medium of rods and a cranked shaft to
a slotted lever loosely mounted on the end of the duct roller g¹. By means of
this arrangement the lever is raised and lowered at each revolution of the shatt
carrying the cam of the said lever during its rising motion actuating the duct
roller g through the medium of the ratchet ³ and pawl h by bearing against the
joint pin h of the said pawl which joint pin projects over the said lever h'. ' is a
stop which limits the motion of the lever when thrown backward. Facility an 1
nicety of adjustment of the extent of motion of the duct roller at each stroke of
the machine are provided for by means of a screw 10 carried by a bracket g
secured to the part 9° supporting the duct the end of which screw stands in the
path of motion of a projection h" on the lower part of the hand lever hand limits
the extent of the backward or return motion of the ratchet pawl h carried by the
said lever . Adjustment of the extent of rotation of the duct roller at each
forward motion of the ratchet is also provided for by means of the slot in the
lever h².
.
m' m' are fast and loose band pulleys on the driving shaft m. The mechanisın
for shifting the driving band from one to the other of the said pulleys by the operator
when standing at the feed end of the machine consists of a shift m' carrying at
the feed end a hand lever m³ and at the rear end a lever mt which is connected to
a belt shifter of ordinary form consisting of a bar m³ mounted and capable of
sliding in staples mª me and carrying arms mm between which the driving band
works. m³ is a fly wheel on the said driving shaft m.
The mode of using the machine and its action are hereinafter described.
When the machine is required to be run solely for the purpose of effecting
proper distribution of ink on the table e the handle lever is depressed in order
to admit of to and fro motion of the cylinder carnage without rotation of the
cylinder and without action of the inking rollers mounted in the sand carriage.
Assuming that the ink has been properly distributed on the table c and that the
design is secured in the required position on the support and that the parts of
the machine are in their normal positions as described with reference to and
illustrated in Figures 1, 2 and 3 the action and use of the machine during regular
or ordinary working are as follows:-
On motion being communicated to the driving shaft m the cylinder carriage 23
is caused to advance toward the feed end of the machine through the medium of
the gearing herein before described the cylinder rotating while the said carriage
advances.
During the first rotation of the cylinder it passes over the design and
receives the impression therefrom. Duting the second rotation of the said cylinder
it passes over the work (which has been previously placed by the attendant in the
requisite position on the feed table e) and sets off thereou the impression which it
received from the design and during the two rotations of the cylinder the damping and
inking rollers pass over the design and damp it and deposit ink thereon and the
damping rollers pass over the damping table f. While these actions are taking

page_text: place the duct roller g¹ is partially turned by the mechanism actuated by the cam of
on the shaft of the driving wheels oo and ink is transferred from the said duct
roller to the distributing table c by the roller y in consequence of motion of the
roller carriage y which while the cylinder carriage is advancing is drawn
forward but at a slower speed and to a less distance than the said cylinder carriage-
the extent of traverse of the said roller carriage being only sufficient to cause the
distributing rollers mounted in it to act on the distributing table c and to cause the
roller y to deposit on the said table the ink received from the duct roller g¹.
After the cylinder carriage has arrived at the extremity of its forward stroke the
continued motion of the driving mechanism causes it and the roller carriage y to.
begin their return motions when the following actions take place. During the
return of the roller carriage the distributing rollers mounted therein again act on
the ink on the distributing table c and the roller y is driven under the duct
roller g' and receives therefrom a fresh charge of ink. During the return motion
of the cylinder carriage the cylinder i does not rotate the reason being as herein-
before stated. The said cylinder is therefore carried back without rotation to the
position in which it is shown in Figures 1 and 2 and while being so carried back
the damping rollers again pass over the damping table and the inking rollers again
pass over the design and the distributing table. Meanwhile the attendant removes
from the stationary feed table e the work on which the impression was set off
during the forward motion of the cylinder and places on the said table fresh work
(another slab or sheet) ready to receive the set off from the cylinder when it next
advances over the feed table. When the next advance motion of the cylinder
carriage begins the pawl pl (which was automatically disengaged from the
projection on the cylinder during its return motion) again engages with the said
projection and causes rotation of the cylinder as before. In ordinary circumstances
the actions described are continuously repeated during the whole time of working
but if it be desirable for any reason to prevent rotation of the cylinder while it is.
advancing this is effected by depression of the handle lever t whereby the
mechanism governed by the said lever is actuated and the effects herein before.
described as consequent on actuation of the said mechanism are produced.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that we claim
as our invention of "An improved machine for taking prints or impressions from
prepared lithographic stones engraved blocks and the like and setting off such:
prints or impressions upon glass wood and other rigid substances
"
First. A machine for the said purpose constructed substantially as hereinbefore
described that is to say a machine in which the feed table and the distributing
table and the support for the design are stationary and in which the impression of
the design is received therefrom and set off on the work placed on the feed table
by means of a cylinder actuated through the medium of mechanism and gearing-
arranged substantially as hereinbefore described whereby the said cylinder is.
caused to travel forward over the stationary design and work and to rotate while
so travelling so as to properly receive and set off the impression of the design and
to travel back without rotating.
is
4 machine embodying the features claimed in the foregoing claim
he ink distributing rollers are mounted in a carriage independent of
arriage and separately connected with the actuating mechanism so
that the travel of the said rollers is restricted to the part of the machine where
their action is required.
W. T. WHITEMAN,
Agent for the Applicants.