Improvements in Printing Machines.
Year: 1893

page_text: Date of Application, 17th Jan., 1893-Accepted, 13th May, 1893
UUMI LEIN DI MULTICATION.
Improvements in Printing Machines.
I, ARTHUR JEROME EDDY, of Rookery Building, Chicago, Illinois, United
States of America, Lawyer, do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
My invention relates to improvement in oscillating printing presses generally;
though more particularly to improvement in a printing machine in which an
oscillating press designed to print upon a continuous web of paper, forms a part
of the machine which is also provided with mechanism for severing the web, after
it has becu printed, into sheets of desired size.
In the drawings
Figure 1 is a side view of a machine embodying my improvements;
Figure 2, an enlarged sectional view taken on line 2 of Figure 1, and showing
the printing press in side elevation;
Figure 3, a top-plan view of the platen, its pivotal supporting lever and adjacent
guide for the web:
Figure 4, a broken sectional plan view taken on line 4-4 of Figure 2, and
viewed in the direction of the arrows;
Figures 5 and 6 sections taken respectively on lines 5 and 6 of Figure 2, and
viewed in the directions of the arrows;
Figure 7, a section taken on line 7 of Figure 2, and showing two inking
tables;
Figure 8, a broken view illustrating in elevation the gear connection between
the printing-press and driving-shaft of the machine;
Figure 9, a bottom plan view of an inking table;
Figure 10, a broken view in elevation of cam mechanism for giving an oscillatory
motion to the inking table;
Figure 11, a section taken on line 11 of Figure 1, enlarged, and showing the
feed mechanism for the web in side elevation;
Figure 12, a section taken on line 12 of Figure 1, enlarged, and showing the
cutting mechanism for severing the web into sheets;
Figure 13, a broken view showing the web feeding mechanism in front
elevation:
Figure 14, a broken perspective view of the guide for the web;
Figure 15, a broken perspective view of the inking-table, and the operating
mechanism therefor to effect proper distribution of the ink;
Figure 16, a bottom perspective view of one part of the inking table;
Figure 17, a side view of the inking-table detached from the machine;
Figure 18, a bottom perspective view of a rotating platform forming a part of
the inking-table; and
Figure 19, a side elevation of the inking table bearing.
My principal objects are first, to so secure the printing press upon the frame as
to render it adjustable longitudinally and crosswise thereof; second to provide for
the employment of two or more of the printing presses upon the same frame, geared
to a common drive shaft, and adjustable with relation to each other upon the frame,
to co-operate in printing upon the web; third, to provide a support for the platea
hinged to the frame of the press in a manner which permits it to be easily displaced
to give access to the bed of the press; fourth, to render the inking-roller carriers
so adjustable that their throw may be regulated to diminish or increase the distance
of travel of the rollers; fifth, to provide an adjustable system of gears between the

page_text: drive shaft of the machine and the press, whereby the speed of the latter may be
increased or diminished with relation to the other parts of the machine; and two
or more colors or two or more forms be printed at one time; sixth, to provide an
inking table of an improved construction having a vibrating and a rotating
platform to facilitate the distribution of the ink; and, lastly, to provide a printing
machine of the class named, which shall be of a comparatively simple, cheap and
durable construction adapting it to general use in a printing office.
A is the frame of the machine provided with the supports A' A² suitably braced
as shown.
At the top of the frame are two horizontally extending and parallel
side-rails A³ A', affording a track upon which the various features of the machine
are adjustably mounted, as hereinafter described.
Bis a drive-shaft extending longitudinally of the frame, having its bearings in
brackets in the sides of the supports A' A², and provided at one end with a friction
disk B. On the end of the frame A is a cross-shaft 133 carrying at one end a
power pulley B2, and at its opposite end-portion a longitudinally adjustable friction
pulley B. The shaft B3 is journaled in a movable frame between which and the
main frame is suitable shipping mechanism operative at will to throw the friction
pulley into and out of engagement with the disk B, and thereby produce or
stop rotation of the shaft B.
Ċ is the frame of the printing-press which is mounted on a sliding support C¹.
The frame C comprises a base formed of two parallel bars t, firmly bolted together,
provided with corresponding rigid uprights s at their rear ends, and corresponding
rigid brackets at their forward ends, cach bracket being formed with a downward
inclined arm, carrying an upward extending arm 7², as shown. On opposite sides
of the base-bart at the forward ends of the latter are vertically slotted adjusting
plates,
held against the base-bars by set-screws ', and resting upon the support C
at the rail A Resting across the barst is a loose clamping plate t', affording a
bearing for a clamp-screw t2, which passes down between the barst into a threaded
opening in the support C'. Extending at its ends against the undersides of the
rails A³ A', is a loose clamping plate w, affording a bearing for a clamp-screw
which passes upward through the plate w and between the rails A3 A4 into a
threaded opening in the support C. The support C may be slid along the
rails A³ A and secured in adjusted position by tightening the screw w which
causes the rails to become firmly clamped between the support C and plate w;
and the frame C may be adjusted by sliding it longitudinally upon the support C³,
in a direction cross-wise of the machine, and when adjusted it may be fastened
rigidly in position by tightening the screw 2 which causes the bars t to become
firmly clamped between the support C¹ and plate tl.
Journaled in the brackets is a shaft p carrying a speed altering gear, com-
prising a series of three cog-wheels of varying diameters; and on the
shaft Bare three adjustable cog-wheels, o o o², of varying diameters, which may
be tightened and loosened on their shaft by means of set screws and slid respec-
tively into and out of mesh with the respective cog-wheels p² ² 13. Thus for
example the wheels o and p³ may be of equal diameters whereby when they are
caused to engage, the shaft p will be rotated at the same speed as the drive-shaft B.
The central wheel o' is of smaller and the central wheel of larger diameter than
the wheels o p³, whereby when they, instead of the central gears, are caused to
engage the shaft. p will rotate more slowly than the shaft B. The wheel o² is of
still smaller and the wheel p' of still larger diameter than the central wheels, and
when they, instead of the others, are brought into mesh, the rotation of the shaft p
will be correspondingly slower than that of the shaft B. In practice the relative
sizes of the cog-wheels should be such that engagement of the wheels o p³ will
cause the shafts B and to rotate with equal velocity, engagement of the
wheels o' p² will cause the shaft p to rotate with half the velocity of the shaft B,
and engagement of the wheels op will cause the shaft
P to rotate with one-third
the velocity of the shaft B. When a changing of the gearing, as described,
between the shafts B and p necessitates the increasing or decreasing of the distance

page_text: between those shafts, this may be effected by adjusting the frame of the press
higher or lower in the slots q' of the supporting plates q.
At opposite ends beyond its bearings the shaft p carries crank arms p' extending
in the same radial plane.
D is the bed of the press, on a rocking bed-frame D', having parallel rearward.
extending arms at the ends of which it is pivoted upon a shaft m extending
between the uprights s, and parallel forward extending arins .
arm the bed-frame is connected by a pitman & with the crank p on its respective
At the end of each
side of the frame, whereby in the rotation of the shaft the bed-frame is rocked
on its pivot in the vertical plane. Extending downward and backward from the
bed frame are rods which in the oscillation of the bed-frame reciprocate through
a guide on the frame C. Coiled about the rods and confined between the bed-
frame and the stirrup end of the guide are springs, which resist the lowering
and assist the rise of the bed-frame, and their resisting power may be so regulated
as to produce a counter balance for the bed-frame. The stirrup-end of the guide,
has a series of bolt holes, whereby it may be shortened and lengthened to increase
or diminish the tension of the springs, to regulate them, as described, and
secured by bolts, in adjusted position, to the sides of the guide.
E is the platen, which is carried by a vertically swinging lever E. The lever El
is bifurcated at its rear end portion, and at the ends of the forks it is pivoted
upon the shaft m on the support s. At its forward end the lever E' is formed
into a handle, and when the lever is swung, down to the position shown by full
lines in Figure 2, it rests near its handle-portion upon a shafty which extends
between the arms of the support or bracket framer.
lever E near the point of its contact with the shaft y are lugs . Fulcrumed
On opposite sides of the
upon the shaft g at opposite sides of the lever E', is a bifurcated lever E, having
the end of its long and heavier arm formed into a handle, and the ends of its
short arm formed into hooks to engage the lugs, and lock the lever El down
against the shaft g. The hooked ends of the lever E2 fit closely over the lugs ',
and, while they may be readily disengaged by raising the lever E at its long-arm,
when in engagement with the lugs, they produce a lock which holds the lever E
in place with great rigidity. Upon the sides of the lever E' are lugs affording
bearings for set screws h³, and the platen is provided at the centre of its upper side
with a threaded rod which extends upward through an opening in the lever E.
Above the lever E' the rod is provided with a nut between which and the
lever is confined a stiff spring ", which operates to hold the platen up against the
lower ends of the set screws. By means of the set screws ³ the platen may be
adjusted with great accuracy. To give access to the bed for the purpose of
nserting or removing a form, the lever Ez is turned to disengage the lugs h', and
he lever E' is swung upward on its pivot to the position indicated by dotted lines
Figure 2, where it is stopped from swinging further by contact of a projection h
on its end with a lugs on the uprights. FF are adjustable web sustaining
uides having longitudinally slotted arms, through which they are secured by
humb-screws to opposite sides of the bracket-arm, and arms which are
djusted to extend in a plane parallel with, and the thickness of the web below, the
laten, at opposite sides of the latter.
is
table
secured to
and inking
The ink supplier which I prefer to provide in the form of an inking
ounted upon a lever G, which is pivotally connected to a bearing
bar extending between the arms of the frame D'. The lever G
able oscillate from right to left on the bearing . Mounted between the bracket
rins is a plate e having flanged edges e Midway between its edges the plate
provided with a stationary cam ³ pointing downward, and, just below the cain e³,
ith a pivotal pointed switch e having its pointed end upward and a wide end
elow the pivot. A spring e' is connected at one end to the centre of the plate
elow the switch and at its opposite end, through the medium of the rod e
votally to the switch near the point of the latter. The spring resists turning of
A

page_text: 1
the point of the switch from either side toward the centre of the plate, and causes
the point when turned from either direction past the centre to spring to the
adjacent side of the plate e. The forward end of the lever G³ extends between the
sides of the plate e, and in its downward oscillation strikes the switch and turns
it. In its upward oscillation the end of the lever (moves the switch, without i
turning it past its centre whereby it springs back to its former position, and operates
when the lever descends again to direct it across to the opposite side of the plate e.
Thus in operation, as the bed-frame falls and rises the lever G¹ descends along the
side e, for example, is directed by the switch across to the side e', turns the switch,
ascends along the side e', then descends again along the side e¹, is directed across to
The inking table G, com-
the side, turns the switch and rises on the side ², etc.
prises a platform e' firmly secured to the end of the lever and a rotary disk (*
pivoted on the lever at the bearing . The disk and platform fit together as
shown to produce a substantially continuous table. On the underside of the disk (*
is a circular rack e. Pivoted upon the side of the bearing e, on the lever G, is
a lever es, having a long arm which extends beyond the edge of the platform eª,
The pawle is pivoted loosely
and carrying a pawl e" which engages the rack e.
upon the end of the short arm of the lever 13, and rests at one end against a pin e'
carried by the latter, all as clearly shown in Figures 15 and 17. On the plate
in the path of the long arm of the lever is a projecting plate e against
which, in the descent of the bed-frame, the lever strikes and is thereby turned
upward on its pivot. As the lever ¹s strikes the plate e swings upward, its
pin e turns the pawl ", causing the latter to engage a tooth of the rack "
The engagement of the pawl with the rack is in the nature of an impact, which
drives the disk forward, causing it to rotate upon its bearing and wipe across
the pawl until stopped by friction, or the engagement of the ink-rollers.
14
"
"
Extending downward from opposite sides of the bed-plate D' are arms D³, and
pivoted between their ends at d to the lower ends of the arms D2, are roller-
carrying levers H.
Below the pivotal connection d each lever His bent, as
shown in Figure 2, and provided with a slot d'in its end. On each side of the
support C is a downward extending arm C2 affording at its lower end a bearing
The rods d are pivotally
for a forward extending longitudinally slotted rod ‹².
secured through their slots to the bearings by cap-screws ³, being adjustable
thereon longitudinally to the extent of the length of their slots, and they are
pivotally secured in adjusted position against longitudinal movement by tightening
the cap-screws. At their opposite ends the rods are pivotally and adjustably
connected with the levers Hat the slots d'. The rods by swinging upon their
pivots at d thus afford shifting fulcrums for the levers H. The rollers H' are
mounted at their ends in bearings e on the ends of reciprocal rods e', in a common
manner, the rods c¹ extending through guides on the levers H, and held down by
springs 2. The rollers H' travel on tracks 3 at the sides of the bed, and the
tracks are provided at their ends with slots through which they are secured
to the bed by cap screws. The tracks may be raised and lowered to an extent
limited by the length of the slots c', whereby they may be adjusted to compen
sate for shrinkage of the rollers.
In operation, the rise of the bed frame rocks the arms D2 in a forward direction
causing the levers H, owing to their pivotal engagement with the swinging rods d
to be oscillated forward on their pivots d, to swing the rollers across the inking
table; while the descent of the bed frame causes the levers H to be swung back
ward to carry the rollers across the form. By changing the adjustment of the
swinging rods in the slots of the levers H, the throw of the levers EI may b
regulated to any desired degree; and by changing the adjustment of the rods do
the arms C2, the terminal points between which the rollers travel may be regulated
Thus the rollers may be caused to travel entirely or only partway across the inkin
table and the bed. As the distance through which the rollers are required to trave
determines the speed at which the press may be operated, this adjustment, whereb

page_text: the sweep of the rollers may be limited, is particularly desirable, because it renders
possible speeding of the press, much more highly than otherwise, on small job work,
such as tags, the forms for which need be caused to occupy only the forward part of
the bed. In the downward oscillations of the bed-frame, after the rollers have left
the inking table, the forward end of the lever G' strikes the switch and is moved
as described, causing the inking table to be oscillated alternately to the right and
left, and thus facilitate the distribution of the ink.
7"
In the construction, shown in Figure 7, two adjacent lying oscillating inking
tables G and divided inking rollers Hare provided, for printing in two colors.
The tables are mounted upon the bed frame, and a plate e, constructed as above
described, is provided upon the bracket frame for cach lever G to move in. The
operation of each table is the same as where only one table is employed, as
described. The plates e are removable and replacable, and so are the inking
tables, whereby the single table and double table may be interchanged on the same
press.
On the shaft B in Figure 1 is shown a second set of gear wheels o, o', o², to which
a second press, constructed like the one described and mounted on the frame A. in
the same manner, may be geared.
C
1 is an adjustable intermittent feed mechanism for the web Z, mounted upon a
sliding support 1, like the support C' of the press, whereby it may be moved toward
or away from the press on the frame A, and secured in adjusted position. The
frame of the feed imechanism comprises two uprights 12 and 13 joined together by a
Mounted in
cross piece 1, and to the top of the upright 1 is pivoted an arm 1º.
In bearings.
bearings on the upright 12 is a loose shaft carrying a cog-wheel.
on the cross piece I' is a loose shaft, carrying a pinion, which meshes with the
cog wheel, and a feed-roller. A loose shaft, mounted in bearings on the
arm 1, carries a friction roller which is pressed against the roller by a
spring interposed between the arm 1 and upright 13 beyond their pivotal
connection. Also upon the shaft are a removable and replacable ratchet-
wheel, which is tightened upon the shaft, and a loose bell-crank lever, the
latter carrying a spring pawl 10 which engages the teeth of the ratchet-wheel.
The lever is connected by a removable and replacable link with an eccentric 1*
on the shaft B. The characteristics of the eccentric I are that it may be adjusted
along the shaft B, and that it may also be adjusted to increase or diminish the throw
of the link and lever a, in such a way that the degree of rotation transmitted
by the pawl to the ratchet wheel and through the latter to the rollers, with
cach revolution of the shaft B, may be regulated with great precision.
The degree of rotation of the rollers with each operation is regulated by the
distance of throw of the lever 2, hence when the lever and ratchet-wheel are on
the shaft, as shown, the web Z can only be caused, in each revolution of the
shaft B, to travel a distance less than one-half the circumference of the roller '.
While this would be sufficient for small job work, larger work would make it
necessary for the web to travel much further with each operation than is possible
with the adjustment described. For larger work the ratchet wheel and pawl-
carrying lever may be removed from the shaft 2 and placed upon the shaft the
lever being connected to the eccentric by a shorter link than the one shown.
When thus adjusted the cog and pinion gearing between the ratchet-wheel and
feed-rollers will cause the distance of travel of the web to be increased; and it
may be regulated, as before stated, by the adjustment of the eccentric.
.2",
Kis the web-severing mechanism mounted upon a sliding support K' for
purposes of adjustment toward or away from the other mechanisms. It comprises
a stationary cutting blade mounted upon uprights 62, and a vertically oscillating
cutter-blade 3 pivoted at one end to the blade and operated from an eccentric on
the shaft B, as shown, which may be adjusted longitudinally on the shaft.
L is an adjustable guide for the web Z mounted upon the frame A just in
advance of the printing press. It comprises two uprights a a¹ provided at the top
with a vertically disposed plate a², having a guide opening as through it for the

page_text: passage of the web, and a horizontal plate a upon which are adjustable guide
pieces a for the edges of the web.
The roll Z from which the web Z is drawn, may be mounted between standards
on the end of the frame, as shown, or in any other suitable location. The web
passes from the roll through the guide L. thence through the printing-press, between
the web sustaining guides FF and platen, to the feed-mechanism 1, where it is
clamped hetween the intermittingly rotating feed-rollers, and thence to the
severing mechanism K.
The machine is capable of adjustment for the purpose of turning out printed
sheets of any size within the capacity of the press or presses. The relative speeds
of the different mechanisms may also be regulated with great accuracy, and when
once adjusted there can be no variations in the relative speeds to mar the work
turned out.
The adjustments are positive and all of the simplest nature, thereby
contributing to the desirability of the machine.
In Figure 1 a second press upon the frame A is indicated by broken dotted lines.
When two presses are employed the feed I and web-severing mechanism K would
be adjusted further along toward the rear end of the frame. The relative adjust-
ments of the presses and cutting device, as for sheets of different sizes, are effected
by sliding one or both the presses and the cutting device along the rails. This
permits the web to travel in a straight line through the machine, and enables me to
dispense with the adjustable guide rollers usually employed in printing presses to
regulate the distance of travel of the web between operating mechanisms.
The adjacent lying and horizontally vibrating inking tables and divided inking
rollers adapt the press, as stated, to color-work. If desired, three or more inking
tables, like those described and made proportionally narrower, may be provided and
mounted in the bed frame to operate as set forth and inking rollers divided into
sections corresponding in number with the inking tables, should also be provided.
The adjustability of the press and feed mechanism with relation to the driving shaft
renders it possible to print with several forms in each press, in several colors, and
in any size sheets within the capacity of the presses.
While I have shown and described only three pairs of gears between the printing-
press shaft and shaft B, the gears may be increased in number for further change
in the ratio of movement, the increase being accompanied with the necessary change
of size and number of teeth, so that the press may be caused to give one impression
with each four or more rotations of the shaft B. As the feed and cutting
mechanisms operate once with each rotation of the shaft B as many forms as the
shaft B3 rotates times the press shaft, may be placed side by side in the press, in
the direction of the length of the web. The intermittent-feed mechanism may be
regulated to carry the web forward a desired distance with each operation and as
many adjacent lying inking tables may be provided for each press as desired, all as
before stated. Thus the machine is adapted to turn out many kinds of color work,
which may be increased by increasing the number of presses upon the frame, and,
if desired, by having the presses run at different speeds, as provided.
As an
illustration of one class of work which my improved machine may perform when,
for instance, two presses are provided on the frame: The first press, printing on
tinted blocks, may be caused to give one impression with each third revolution of
the drive shaft B, and print as many tints as there are inking tables provided;
and the second press may be caused to give an impression with each revolution of
the drive shaft, and print three forms in different colors on the tinted surface, the
feed being regulated to move the web-one-third the distance across a with
each operation. When more than one press is provided upon the frame and
arranged say to print in different colors on the same fields in the web (as for
chromo work), any mistake in the relative adjustment of the forms in the different
presses may be overcome by simply adjusting the press longitudinally or crosswise
of the machine, as provided by the construction and thus save a great deal of time
which would otherwise necessarily be taken to unlock and re-adjust the forms in
their chases.
press

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, declare that what I
claim is :-
1-In a printing machine for printing upon a continuous web, the combination
with the supporting frame, of a printing press and intermittent web-feeder thereon,
and means for regulating the relative speed of operation of the press and web-
feeder, whereby the feeder may be caused to advance the web once or oftener, as
desired, with each operation of the press, substantially as described.
2-In a printing-machine for printing upon a continuous web, the combination
with the supporting frame, of a printing-press, web-feeder and web-cutter thereon,
means for adjusting the relative speed of operation between the press and the web-
feeder and web-cutter, and means for adjusting the amount of feed, whereby the
relative speed of operation of the press and web-cutter, and the distance of travel
of the web, with each operation, may be regulated as desired, substantially as
described.
3-In a printing machine, for printing upon a continuous web, the combination
with the main-frame and driving shaft, of a printing press, web-feeder and web-
cutter mounted on the main frame and independently geared to the said shaft, and
adjustable speed altering gear between the said shaft and printing press, substantially
as and for the purpose set forth.
4-In an oscillating printing press, the combination of the frame C, supports,
on the frame, oscillating type-bed, vertically swinging lever E' pivoted at one end
to the support s, resting at its opposite end on the support r, and provided with
laterally extending lugs ', platen carried by the lever Ei and a bifurcated lever F
pivoted on the support and provided at its bifurcated end with hooks to embrace
the lever E and engage the lugs, substantially as and for the purpose set forth.
5-In an oscillating printing press, the combination with the swinging type
bed, of an ink-roller carrier to swing with the bed frame and means for varying, at
will, the extent of sweep of the roller, substantially as and for the purpose set
forth.
6-In an oscillating printing press, the combination with the supporting frame,
of the vertically swinging type-bed frame having the downward projecting arms D²,
the roller carrying levers H, pivotally supported between their ends on the arms D2,
and adjustable vertically swinging links upon the supporting frame to which the
levers are pivotally connected at their lower ends, substantially as and for the
purpose set forth.
7 In an oscillating printing press, the combination with the supporting frame
having the downward extending arms C2, of the vertically swinging type-bed
frame having the downward extending arms D², roller carrying levers H. provided
in their ends with longitudinal slots and pivoted between their ends to the
arms D, and longitudinally slotted rods d², adjustably and pivotally connected
through their slots to the arms C², and adjustably and pivotally connected at their
opposite ends to the levers H at the slots d', substantially as and for the purpose
set forth.
8 The combination with the type-bed of a printing press, of an inking table,
comprising a vibrating platform and rotating disk and means for transferring ink
from said table to the type-bed, substantially as described.
9-In combination with the vertically swinging type-bed of an oscillating printing
press, an inking table, oscillating with the type-bed, comprising a horizontally
vibrating platform and rotating disk, and means for transferring ink from said table
to the type-bed, substantially as described.
10-In an oscillating printing press, the combination with the supporting frame,
of a vertically swinging type-bed, lever G pivotally mounted on the type-hed
frame and carrying an inking table comprising a platform and rotating disk,
cam-mechanism on the supporting frame in the path of the lever G₁ for imparting
a horizontal vibrating motion to the said lever, and means for transferring ink
from the table to the type-bed, substantially as and for the purpose set forth.

page_text: 11-In a printing machine for printing upon a continuous web, the combination
with the supporting frame, of a web-feeder and web-cutter, on the frame, a
printing-press on the frame having a single type-bed, two or more ink-suppliers
adjacent to the type-bed for the ink-roller to contact with simultaneously, means
for adjusting the relative speed of operation between the press and the web-feeder
and web-cutter, and means for adjusting the amount of feed, whereby the relative
speed of operation of the press and web-cutter, and the distance of travel of the
web with each operation may be regulated as desired, substantially as described.
12-In a printing machine for printing upon a continuous web, the combination
with the main-frame and shaft B, of an oscillating printing press and adjustably
mounted upon the main-frame, adjustable speed altering gear between the shaft B.
and printing press, and adjusting means, as the slotted sliding plates 7 on the
press, for raising and lowering the press on the main-frame, substantially as and
for the purpose set forth.
13-In a printing machine for printing upon a continuous web, the combination
with the main frame drive-shaft and printing press, of an adjustable intermittent"
feed for the web, comprising feed roller carrying shafts, and a shaft a journaled
in a frame on the main-frame, a large gear wheel on the shaft a, and a small
gear-wheel on the shaft, engaging each other, and a ratchet wheel and leveraª
carrying a spring pawl a to engage the ratchet wheel, interchangeable upon either
the shaft or shaft and connected eccentrically with the drive-shaft, substantially
as described.
Dated this 17th day of January 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.