Improvements in Printing Machinery.
Year: 1892

page_text: Date of Application, 9th Aug., 1892
Complete Specification Left, 9th May, 1893-Accepted, 10th June, 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by Messrs. R. HOE AND COMPANY, of 504, Grand
Street, in the City of New York, United States of America, Printing Machine
Manufacturers.]
Improvements in Printing Machinery.
I HENRY EDWARD NEWTON of the Office for Patents, 6 Bream's Buildings,
Chancery Lane in the County of London, Patent Agent, do hereby declare the
nature of this invention to be as follows:-
The present invention relates to that class of printing machines which have
reciprocating type beds that co-operate with rotating cylinders in making the
impression, whether said machines have one or more such cylinders; whether said
cylinder or cylinders oscillate or rotate periodically or continuously, or in the same
or opposite directions, or make one or any number of revolutions during each
reciprocation of the type bed; in short, the invention applies to a machine having
a reciprocating bed, no matter how the impression is taken therefrom, although it
is illustrated in connection with a single cylinder printing machine.
The object of this invention is the providing of a mechanism for retarding and
stopping the movement of the bed in one direction, and starting and accelerating
it in the reverse direction, at each end of its run; which shall perform these
reversing operations so quickly as to minimize the time for their accomplishment,
and thus provide for the attaining of the highest rate of speed of the machine,
without unduly modifying it in making such reversals of the bed at the ends of its
stroke.
The invention consists in combining with a rack and pinion, or other means
producing the major part of the movement imparted to the bed, of a swinging
lever, provided with a stud, which is engaged, near the end of the movement of the
bed in one direction, by a pocket in the periphery of a revolving disc, and carried
by said pocket through curved guideways provided by a rotating curved guard,
which movement of the lever stud, thus caused, in said curved guideway, is equivalent
to that of a crank; and hence operates to cause the reversal of the bed by a movement
which is both powerful and smooth.
The invention also embraces such a lever made double, and provided at each end
with a stud, one of which studs is engaged at each end of the movement of the bed
by the said pocket, and carried thereby through the curved guideway provided by
the rotating guard, in the performance of the reversing operations at each end of
the run of the bed. The invention also includes, in combination with the fore-
going, a curvel guide or guides attached to the bed, in which guide or guides the
stud or studs on the end or ends of said lever are forced to travel in an arc that is
opposed to that travelled by the pocket, and from which results a compound
movement, that is, an extended path, which produces a cain like action, enabling
the bed to be retarded and stopped so smoothly as to avoid jarring, and to be started
and accelerated with great ease.
The invention also embraces the employment of two such swinging levers pivotted
to the bed, and each provided, at its free end, with a stud that engaged near the
end of the movement of the bed by the pocket before referred to, and carried
by said pocket through the curved guideway provided by the rotating curved
guard.
To arms on the rocking lever are pivotted spring rods, the free ends of which
enter sockets on curved guides, the said spring rods serving, under certain conditions,
to reverse the position of the rocking lever.

page_text: The pocket disc and guard disc are driven by suitable gear at differential speeds,
and the reciprocations of the bed are effected by a broad pinion which is auto-
matically shifted laterally on its axle by means of a suitable cam, to bring it into
gear with one of two racks on the bed, arranged one above and the other below the
pinion, but on opposite sides of a vertical line.
By this means, the pinion will always remain in gear with its driving wheel,
will always rotate in the same direction, and will drive the bed in opposite directions,
as required.
When two rocking or swinging levers are used, they will be geared together, so
as to swing concertedly in opposite directions.
In this case, guide rails will be provided to support the levers in the upper or
lower positions to which they will be moved by one or other of the studs entering
and following the motions of the pocket and the guard discs.
Dated this 9th day of August 1892.
NEWTON & DUN,
SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Printing Machinery.
I, HENRY EDWARD NEWTON of the Office for Patents, 6 Bream's Buildings,
Chancery Lane, in the County of London, Patent Agent, 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 :-
The present invention relates to that class of printing machines which have
reciprocating type beds, that co-operate with rotating cylinders in making the
impression, whether said machines have one or more such cylinders, and whether
said cylinder or cylinders oscillate or rotate periodically or continuously, or in the
same opposite directions, or make one or any number of revolutions during each
reciprocation of the type bed; in short, the invention applies to a machine having a
reciprocating bed, no matter how the impression is taken therefrom, although it is
illustrated in connection with a single cylinder printing machine.
The object of this invention is the providing of a mechanism for retarding and
stopping the movement of the bed in one direction, and starting and accelerating
it in the reverse direction, at each end of its run, which shall perform these
reversing operations so quickly as to minimise the time for their accomplishment,
and thus provide for the attaining of the highest rate of speed of the machine,
without unduly modifying it in making such reversals of the bed at the ends of
its stroke.
The invention consists in combining with a rack and pinion, or other means
producing the major part of the movement imparted to the bed, a swinging lever
provided with a stud which is engaged near the end of the movement of the bed in
one direction by a pocket in the periphery of a revolving disc, and carried by said
pocket through a curved guideway provided by a rotating curved guard, which
movement of the lever stud thus caused in said curved guideway, is equivalent to
that of a crank, and hence operates to cause the reversal of the bed by a movement
which is both powerful and smooth.
The invention also embraces such a lever made double, and provided at each end
with a stud, one of which studs is engaged at each end of the movement of the bed
by the said pocket, and carried thereby through the curved guideway provided by
the rotating guard, in the performance of the reversing operations, at each end of
the run of the bed. The invention also includes, in combination with the foregoing,
a curved guide or guides attached to the bed, in which guide or guides the stud or
studs on the end or ends of the said lever are forced to travel in an arc that is
opposed to that travelled by the pocket, and from which results a compound move-
ment that is an extended path which produces a cam-like action, enabling the bed

page_text: to be retarded and stopped so smoothly as to avoid jarring, and to be started and
accelerated with great ease.
The invention also embraces the employment of two such swinging levers pivotted
to the bed, and each provided at its free end with a stud that is engaged near the
end of the movement of the bed by the pocket before referred to, and carried by
said pocket through the curved guide-way provided by the rotating curved. guard.
The above constitute the most prominent features of the invention. Other
improvements, however, will appear in the course of the following detailed
description of the mode in which the invention is practically embodied or carried
into effect, a ready understanding of which will be aided by reference to the
accompanying drawings, in which :-
while
and
Fig. 3 a plan view of a printing machine embodying the present improvements;
Fig. 3 is a vertical sectional elevation taken through the driving pinion shaft ;
Figures 4, 5, 6, 7, 8, and 9, are diagrams illustrating various positions assumed
by the retarding, stopping, starting, and accelerating mechanisms, during the
operations of reversing the bed.
Figure 10 is an end elevation of a printing machine embodying the modification
before referred to, in which two swinging levers are employed.
Figure 11 is a plan view of a portion of Figure 10, illustrating particularly the
two pinions for driving the bed and the connections for shifting both of said pinions
laterally into and out of engagement with their respective racks.
Figures 12 to 19 are diagrams illustrating various positions assumed by the
retarding, stopping, starting, and accelerating mechanisms of Figure 10.
The printing machine illustrated comprises the usual impression cylinder C,
mounted to revolve in suitable journals supported by the framework, which cylinder
co-operates with a reciprocating type bed B, that is supported by sliders S, which
run in longitudinal ways W supported by the framework. This cylinder C is
rotated by means of an outside train consisting of wheel 50, driven through an
intermediate 51 from a wheel 52 on a shaft 12.
This shaft 12 also carries what is usually referred to as the main driving pinion 10;
because it determines the movements of the bed-driving pinion 11, said pinion 10
usually making, as it does in this instance, three revolutions to each reciprocation
of the bed, but though experience has demonstrated such a size and relative move-
ment to be advantageous, its relative movement may be changed without affecting
the present improvements, as may also the construction and arrangement of the
rack and pinion mechanisms.
The bed-driving pinion 11 is mounted to turn freely upon a short shaft 13, upon
which it is arranged to slide to such extent laterally, as to be alternately meshed
with the bed racks 21, 22,-it being made wide enough to continue in gear with the
pinion 10 which constantly drives it.
:
These racks 21, 22 are supported directly from the underside of the bed B, and
they are vertically aligned so as to be separated a suitable distance apart, and
horizontally related to the pinion 11, so that their pitch lines respectively agree
with the pitch lines at the top and bottom of said pinion. Timely sliding move-
ments of this pinion 11 on its shaft 13 are imparted by means of a collar 23
attached thereto, into which is entered one end of a pivotted lever 24, that is
strapped to another pivotted lever 25, which latter is periodically vibrated by
means of a cam 26, that is fast to the guard disc G, and revolves with it on the
shaft 12. This shaft 12 carries, at its inner extremity, a revolving pocket disc P,
having a pocket 1. In Figure 3*, this shaft and the pocket disc are shewn in
elevation, for the sake of clearness, and said pocket 1 is occupied in said figure by
he stud 3. This pocket disc is provided with a hub 20, which embraces the
shaft 12, and is secured fixedly thereto by means of a spline.

page_text: This shaft 12 also supports a revolving guard disc G, which is mounted to turn
freely upon said hub 20, carries at its rear side the cam 26, and has its periphery
provided with teeth forming a gear wheel 27, by which motion is imparted to it and
said cam, through intermediate pinions 28 and 29 from the main driving pinion 10,
which intermediate pinions are so proportioned to said pinion 10 and guard disc G,
that the rotation of the cam and the guard disc are relatively slower than the
pinion 10, for an object yet to be explained. On its face side, this guard disc
carries the guard 2, within which the pocket disc P revolves, said guard thus over-
hanging the pocket disc, and co-operating, as will yet appear, to embrace the stud 3
or 6 between it and the pocket disc, and thus cause said stud to travel in the
circular path thus provided. The pocket disc makes turn for turn with the
pinion 10, & being of like size, has a corresponding surface speed. It thus results
from the relative proportions of the gearing, that the pocket disc P makes three
revolutions to one of the guard disc G.
The type bed B is provided with a swinging lever L, centrally pivoted to an
arm A depending from the bed, and said bed carries, depending at its opposite
ends ontwardly, curved arms 30 and 40, in which the free ends of said lever are
respectively guided. Each end of this lever is provided, at one side, with a stud,
as 3 or 6, that is periodically entered into the pocket 1 of the disc P, and engaged
with the curved guard 2 of the disc G, said pocket 1 and the guard 2 forming a
curved pathway in which the stud 3 or 6 on the lever L is driven by the rotation
of the pocket disc P, and as this pathway is like that travelled by a crank, it
consequently imparts the controlling motion of a crank to the reversing of the
bed. On the opposite side, each end of the lever is provided with a stud, as 5
or 7, that travels in the pathway of, or is otherwise guided by, the arm, as 30
or 40. Said crank motion is thus supplemented by what is tantamount to a cam
motion, for the reason that the stud 5 or on the lever end travels in a guideway
the arc of which is opposed to that in which said lever end is moved by the action
of the pocket disc and guard 2, and such compound movement renders it possible.
to slow down and stop the bed with great smoothness, and to restart and propel
the same with great ease.
As the stud 3 upon the lever L must enter the pocket 1 in the disc P, when it
is approaching and passing its highest point of travel, (see Figure 9), and must
leave the said pocket when it is approaching and passing its lowest point of
travel, as in Figure 5, which movement would leave the lever L tilted up with its
stud 6 in its highest position, and as said stud 6 must enter said pocket when it
is approaching and passing its lowest point of travel, as in Figure 6, and must
leave the pocket when it is approaching and passing its highest point (see Figure 8),
which movement would leave said lever so tilted as to depress the stud 3 in its
lowest position, it follows that said lever must be reversed after each such operation,
and assume its normal position of Figures 6 and 9, in order to present its stud
properly to the action of said pocket, and to the guard, before another such
operation is to be made. This is accomplished by means of spring-seated rods,
as 31 and 32, pivoted to bosses 33, 34, on opposite sides of the central part of the
lever L, and arranged to press inwardly from the rear of the curved guide
arms 30, 40, by the operation of which spring rods, said lever will, as its one stud,
as 3, has cleared the pocket 1 and guard 2, when in the lowest position to which
it is rocked, be raised, so as to carry the stud 6 upon its other end, down into
proper position for the making of a like performance, and rice versa.
This and all of the movements of the othe: parts will be made clear by the
following description of the operation in connection with the diagrams, Figures 4
to-9, wherein various parts, which would obscure others then active, are either
broken away, or shown in lines or dotted lines.
In the position shown in Figure 9, the parts are in the positions which they have
when the bed, having made the major part of its non-printing or return run,
driven by the rack and pinion mechanism in the direction indicated by the
horizontal arrow, is to have that movement completed to a state of rest, and then

page_text: be started and moved in the reverse direction, or that in which it runs when
co-operating with the cylinder in making an impression.
It being understood that the pocket disc P and the guard disc G turn in the
same direction, (that of the curved arrow), that the surface speed of the pocket
disc is equal to that imparted by the rack and pinion mechanism to the bed, and,
that the speed of the guard is slower than that of the pocket disc, the latter
making three revolutions while the guard disc makes one, it will be apparent,
since the rear end of the guard 2 coincides in position with that of the pocket 1,
when the latter is in its highest position, that while the pocket disc makes a half
revolution, to bring its pocket 1 into its lowest position, the forward end of the
guard 2 will arrive simultaneously at the same point, said guard being thus in
position for the timely entrance and exit of the stud 3; and furthermore, that this
guard 2 will perform in a like manner with respect to the stud 6 on the lever L.
It will also be observed, that during the reversing operations, the pinion 11 is
moved laterally to bring it into the path of travel of the rack with which it is
next to be engaged.
As the pocket 1 is closely approaching and passing its highest point and the
tail of the guard 2 coincides in position with it, as in Figure 9, at which time said
pocket, the rack 22, and stud 3, are moving at the same surface speed as the
driving pinion, the rack 22 will run out of the pinion 11, and the stul 3 will
simultaneously enter the pocket 1, and pass behind said guard 2, and while the
pocket makes a quarter revolution, it will carry the stud 3 in the curved or crank
pathway formed by the guard 2, and compel the stud 5 to travel in the reversed
curved pathway in the arm 30, and thus, through a compound movement, gradually
retard the bed, and bring it to a momentary state of rest, as in Figure 4, which
compound movement thus obtained is cam-like, or of greater, and hence easier
sweep, than is the movement imparted through a semi-circular path, or that
travelled by a crank alone.
During the next quarter revolution of said pocket 1 in co-operation with said
guard 2 and pathway in arm 30, it will continue to move the stud 3 in like manner,
thus starting the bed in the reverse direction, and gradually accelerating it through
such compound motion, and, when the pocket 1 is closely approaching and passing
its lowest point of travel, and the forward end of the guard 2 coincides with it, as
in Figure 5, at which time said pocket, the rack 21, and the stud 3, are moving at
the same surface speed as the driving pinion 10, the rack 21 will engage the
pinion 11, which has been moved into alignment with it, and the stud 3 will
simultaneously disengage from the pocket 1, and pass out from the forward end of
the guard 2. The bed will then have been reversed by the action of the pocket. 1
and guard 2. applied through the studs 3 and 5 and arm 30, and will now be driven
solely by the pinion 11 and rack 21, through the principal portion of the printing
run, during which, the stud 3, having left the guard 2 and smoothly disengaged
the pocket 1, will leave the guard 2, and become free to run on unobstructedly,
carried by the bed.
The principal part of this printing run will then be completed by the pinion 11,
while the pinion 10 is making a complete revolution, which will bring the parts
into the position shown in Figure 6, ready to begin the reversing operation; and
since, during this printing run or single revolution of pinion 10, the spring
rods 31, 32 will have vibrated the lever L so as to depress the lever, its stud 6
will now be presented in the lowest position, properly aligned to enter the pocket I,
and be carried between it and the guard 2.
When the said pocket is again closely approaching and passing its lowest point
of travel and the tail of the guard 2 coincides in position with it, as in Figure 6, at
which time said pocket, the rack 21, and stud 6, are moving at the surface speed of
the driving pinions 10, 11, the rack 21 will leave the pinion 11, and the stud 6 will
simultaneously enter the pocket 1, and pass behind the said guard 2, and while the
pocket is making a quarter revolution, it will carry the stud 6 in the curved.or
crank pathway formed by the guard 2, and compel the stud 7 to travel, in the

page_text: reversed curved pathway in the arm 40, and thus, through a compound movement,
imparting to the bed a motion which gradually retards it, and brings it to a state of
momentary rest, as in Figure 7, which is the limit of its inward or printing
movement.
During the next quarter revolution of the pocket 1, it will continue to move the
stud 6 in the curved or crank pathway formed by the guard 2, and move the stud 7
in the reversed curved pathway in the arm 40, thus starting the bed in the reverse
direction, and gradually accelerating it through a compound motion, causing it to
move in the direction of the horizontal arrow in Figure 8, and when the pocket 1 is
closely approaching and passing its highest point of travel, and the head of the
guard 2 coincides with it, as in Figure 8, at which time said pocket, the rack 22,
and stud 6, are moving at the same surface speed as the driving pinions 10, 11, the
rack 22 will engage the pinion 11, which has then been moved into proper alignment
with it, and the stud 6 will simultaneously disengage from the pocket 1, and pass
out from the head of the guard 2. The bed will then have been reversed, and will
be carried through the major part of its non-printing movement, during which it
will be solely driven by the pinion 11 through the rack 22, while the pinion 10
makes one revolution, the stud 6 then moving free, and being carried with the bed.
At the end of the major part of this non-printing movement, the parts will have
arrived in the positions of Figure 9, ready for reversal, and the operation described
will be repeated.
The guard disc is provided with a duplicate guard 4, arranged opposite to the
guard 2, which latter has been described as the "active" guard. When the active
guard, as 2, is disabled, or worn, the guard, as 4, may replace it by slipping the
gears, and at all times the inactive guard acts as a counterbalance-for, the active
guard.
It is only necessary to add, that the cam 26 operates during the time consumed
by the reversing operation, at each end of the run of the bed, to slide the pinion 11
laterally, and bring it into alignment with the proper rack, with which it is to next
thereafter engage.
It may now be stated, that the lever L might be divided so as to constitute two
levers separately pivotted to the bed, and geared together so as to be automatically
operated to bring their ends into correct positions for their repeated operation.
This is shewn in Figures 10 to 19, and will presently be described.
It may also be stated that, since to attain its normal position (as in Figures 6
and 9), it is always the same end of the lever which must be depressed, that end
might be given a preponderance of weight, as a substitute for the spring rods, but
the latter are more positive and certain in action, and are therefore preferred.
In the construction illustrated in Figures 10 to 19, the lever L of the preceding
figures is split, to form two swinging levers 70, 80, pivotted to the bed, and in this
construction, also, both the pinions 10, 11 of the preceding figures engage the type
bed, the pinion 10 engaging it during its printing movement, and the pinion 11
during its non-printing movement, the two pinions being simultaneously moved
laterally, to cause them to alternately engage with the rack with which each coacts,
as will hereafter appear.
Other differences in construction, as to other parts of the machine, will appear in
the following detailed description of this modification.
The cylinder C and type bed B of these figures are mounted as in the preceding
figures, and the cylinder is rotated by wheel 50 on its shaft, that is driven directly
by wheel 52 on shaft 12; a pinion 52 fast on said shaft 12, inside of the frame,
gearing, through an intermediate 53, with a wheel 54 on shaft 13, which may be the
main shaft, and from which some of the parts are directly driven.
Upon the shaft 12 is mounted the main driving pinion 10, which is fast upon a
sleeve splined to said shaft 12, so as to slide thereon, and yet be rotated thereby,
and said pinion 10 gears with the bed-driving pinion 11 (of two thirds its size), that
is similarly mounted upon a short shaft 14. The pinion 10 co-operates with the bed
rack 22 in moving the bed throughout the major part of its run during its printing

page_text: movement, and the pinion 11 co-operates with the rack 21 in moving the bed
throughout the major part of its run during its non printing movement.
The bed racks 21, 22", are supported directly from the underside of the bed B,
as before, but they both face downwards in this case. Timely sliding movements
are simultaneously imparted to both pinions 10 and 11, by means of collars attached
to the sleeve of each, into which enter the branching arms of pivotted lever 24, that
is periodically vibrated by cam 26 on the shaft 13, into which the opposite end of
the said lever is entered--(see Figures 10 & 11).
The revolving disc P, having pocket 1, is splined to shaft 12, and has mounted
to turn freely upon its hub, as a bearing, the toothed wheel 27, to the face of which
is fixed the revolving disc G, carrying a guard 2. The guard disc G is rotated by
intermediate pinion 28, fast upon the shaft 14 of pinion 11, and gearing with
wheel 27. The wheel 27, pinion 28, and pinion 11, of these figures, are so
proportioned with respect to said pinion 10, that the rotation of said guard disc is
relatively slower than that of the pinion 10 and pocket disc, that is, the pocket
disc P makes three revolutions to one of the guard disc, as in the case of Figures 1
to 9, so that the tail and head of said guard will respectively coincide in position
with the pocket 1, as said pocket reaches its lowest and highest positions, and
vice versa, during the reversing operations.
The two swinging levers 70, 80, with which the type bed B of Figures 10 to 19 is
provided, are each pivotted to a branching arm A, depending centrally from the
bed. The free or outer end of the lever 70 is provided, on one side, at its end,
with a short right-angular or lateral stud 3, which is periodically entered into the
pocket 1 of the disc P, and engaged with the curved guard, as 2, of the disc G;
and said lever end is also provided on its other side, and somewhat nearer its
fulcrum, with a stud, as 5, that moves in the guideway of, or is otherwise guided
by, the arm 30. The outer or free end of the lever 80 is likewise provided on one
side, at its end, with a lateral stud 6, that is periodically entered into the pocket 1
of the disc P, and engaged with the curved guard 2 of the disc G; and said
lever 80 is also provided, on its other side, and somewhat nearer its fulcrum, with
a stud 7, that moves in the guideway of, or is otherwise guided by, the arm 40.
In order that the levers, when moved by the pocket disc, may be properly
positioned for their next coaction with said pocket disc, said levers 70, 8.1, are
extended rearward, and geared together by segment racks 35, 45, so that one will
be rocked by the other. Now, when the stud 3 of the lever 70 enters the pocket 1,
while the latter is approaching and passing its lowest point of travel, as in Figure 12,
and is rocked upward, so as to leave the said pocket when the latter is approaching
and passing its highest point of travel, as in Figure 14, the movement thus given
to this lever 70 will swing its segment 35 downward, and acting through the
segment 45, will cause the lever 80 to correspondingly swing upward, so as to
present its stud 6 in its highest position, as in Fig. 14, which is that which it must
have to enter the pocket 1, while said pocket is approaching and passing its
highest point of travel, as in Figure 16; and since its stud 6 leaves the said
pocket 1, when it is approaching and passing its lowest point of travel, as in
Figure 18, it again results that the lever 80 thus made to swing, will cause,
through its segment rack 45 and the segment rack 35, such a vibration of the
lever 70 as will present its stud 3 again into position to engage the pocket 1, when
the latter again reaches and passes its lowest point of travel.
The proper relative positions of these levers, when they have been rocked up or
down, and are to travel free from the pocket 1 and guard 2, are maintained by
guide rails 31, 32, 33 and 34", so positioned, that these studs 3 and 6 shall travel
upon them during the principal part of the time the bed is making the major parts
of its run in each direction.
The movements of the levers, as well as those of the various parts, will be
rendered clear by the following description of the operation in connection with the
diagrams Figures 12 to 19 inclusive.
As shewn in Figure 12, the parts are in the positions they have when the bed.

page_text: has nearly reached the end of the major part of its non-printing run, driven by the
pinion 11 and rack 21, and is to be reversed by completing that movement to a
state of rest, and then being started in its opposite direction, or that in which it
runs when co-operating with the cylinder in making an impression.
When the pocket 1 is closely approaching and passing its lowest point, and the
tail of guard 2 coincides in position with it, as in Figure 12, at which time said
pocket, the rack 21", and stud 3, are moving at the surface speed of the driving
pinions, the rack 21 will run out of the pinion 11, & the stud 3 will simultaneously
enter the pocket 1, & pass behind the said guard 2, and while the pocket 1 makes
a quarter revolution, it will carry the stud 3 in the curved or cranked pathway
formed by the guard 2, & compel the stud 5 to travel in the reversed curved
pathway in the arm 30, thus, through a compound motion, imparting to the bed a
movement which, gradually retarding it, brings it to a state of momentary rest, as
in Fig. 13.
During the next quarter revolution of the pocket 1, it will continue to move the
stud 3 in the curved or crank pathway formed by the guard 2, and the stud 5 in
the reversed curved pathway in the arm 30, thus starting the bed in the reverse
direction, and gradually accelerating it through such compound motion, and when
the pocket 1 is closely approaching and passing its highest point of travel, and the
forward end of the guard 2 coincides with it, as in Fig. 14, at which time said
pocket, the rack 22ª, and the stud 3, are moving at the surface speed of the driving
pinions, the rack 22 will engage the pinion 10, which has then been moved into
proper alignment with it, and the stud 3 will simultaneously disengage from the
pocket 1, and pass out from under the forward end of the guard 2, as in Fig. 14.
The bed will then have been reversed, and now be solely driven by the pinion 10
and rack 22, and carried through the major part of its run, made during the
printing operation, the stud 3 then running free.
In the making of this reversal of the bed just described, it will be observed that
the levers 70, 80, have been rocked from their low position in Fig. 12, to their
high position in Fig. 14. The bed will now make the major part of its printing
run, driven solely by the rack 22" and pinion 10, as in Fig. 15, during which, the
pinion makes a complete revolution. During this run of the bed, the levers 70, 80,
are maintained in this last described position, which is the one they must have
when they are to be again acted upon by means of guard rails 31ª, 32ª, upon which
their studs travel while the bed is making the major part of its run in its printing
direction. Thus, as the stud 3 leaves the pocket and guard 2 to pass outward,
the stud 6 of lever 80 will simultaneously enter upon the guard rail 31", and hold
the two levers 70, 80, in their highest positions. Said stud 6 will travel on the
rail 31ª as the bed moves onward, and when said stud 6 is about leaving the
rail 31*, the stud 3 will, in like manner, enter onto the rail 32, as in Fig. 15, and
hold the levers in place until the stud 6 is engaged by the pocket disc 1, as in
Fig. 16, when the bed, having completed the major part of its printing run,
requires to be stopped and reversed, during which operation, the pinions 10 and 11
are moved laterally, so as to present the pinion 11 in the pathway of the rack 21".
When the pocket 1 is again closely approaching and passing its highest point,
and the tail of the guard 2 coincides in positiou with it, as in Fig. 16, at which
time said pocket, the rack 22ª, and stud 6, are moving at the surface speed of the
driving pinions, the rack 22" will run out of the pinion 10, and the stud 6 will
simultaneously enter the pocket 1, and pass behind the said guard 2, and while the
pocket makes a quarter revolution, it will carry the stud 6 in the curved or cranked
pathway formed by the guard 2, and compel the stud 7 to travel in the reverse
curved pathway in the arm 40, thus imparting to the bed a movement which,
gradually retarding it, brings it to a state of momentary rest, as in Fig. 17.
During the next quarter revolution of the pocket 1, it will continue to move the
stud 6 in the curved or crank pathway formed by the guard 2, and the stud 7 will
travel in the reverse curved pathway in the arm 40, thus starting the bed in the
reverse direction, and. gradually accelerating it; and when the pocket 1 is closely

page_text: approaching and passing its lowest point of travel, and the head of the guard 2
coincides with it, as in Fig 18, at which time said pocket, the rack 22*, and the
stud 6 are moving at the surface speed of the driving pinions, the rack 21* will
engage the pinion 11, which has then been moved into proper alignment with it,
and the stud 6 will simultaneously disengage from the pocket 1, aud pass out from
under the head end of the guard 2, as in Fig. 18. The bed will then have been
reversed, and now be solely driven by the pinion 11 and rack 21", and carried
through the major part of its run made during its non-printing movement, the
stud 6 then running free, and, at the end of this movement, the parts will have
arrived in the positions shown in Figure 12, which are those from which the
description of their operation was begun.
In making the reversal of the bed just described, the levers 70, 80, were rocked
from their high position in Fig. 14, to their low position in Fig. 18, in which latter
position (that which they must have when again acted upon), they are maintained
by means of guard rails 33, 34, upon which their studs travel while the bed is
making the greater part of its return movement. Thus, as the stud 6 is leaving
the pocket 1 and passing from the guard 2, the stud 3 will simultaneously bear upon
the guard rail 33, and thus hold the two levers 70, 80, in their lowest positions.
Said stud 3 will then travel on the rail 33ª, as the bed moves onward, and when
said stud 3 is about leaving the rail 33*, the stud 6 will, in like manner, bear
upon the rail 34ª, as in Fig. 19, and hold the levers in place, until the stud 3 is
engaged by the pocket 1, as in Fig. 12, when the bed, having completed the greater
part of its non printing or return run, requires to be again reversed.
As in the case of Figs. 1 to 9, the guard disc & is provided with a second
guard 4, as shown.
It is obvious that other constructions of rack and pinion mechanism than those
shown herein, may be used, without departing from the present invention, such,
for instance, as those explained and illustrated in British Letters Patent No. 11161,
dated June 14, 1892.
It may now be stated, that the curved guide 30 or 40 may, instead of having a
slot, be a single member, against which the stud, as 5 or 7, bears, or that it might
be embraced by a stud bearing on its opposite sides. It may also be remarked that
while such curved guides may be entirely omitted, their use is preferred.
Of course, the pocket disc might be an arm of dimensions sufficient to carry the
semicircular pocket 1, and the terms pocket," "disc," or pocket disc," are
66
therefore to be regarded as embracing such a construction.
"
It will be observed that this invention is applicable, in whole or in part, wherever
a reciprocating member is employed in machines other than printing machines, as,
for instance, in a planer.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me from abroad, I declare that what I claim is :-
1. The combination with the moving bed, of a swinging lever hung to the bed, a
revolving disc having a pocket, and a revolving guard co-operating with said
pocket, to engage the end of said lever and reverse the movement of the bed, by
retarding, stopping, starting, and accelerating the same by a crank-like motion,
substantially as described.
2. The combination with the reciprocating bed, of a swinging lever hung to the
bed, a revolving disc having a pocket, and a revolving guard co-operating with said
pocket, to alternately engage opposite ends of said lever and reverse the movement
of the bed at each end of its run, by retarding, stopping, starting, and accelerating
the same, by a crank-like motion, substantially as described.
3. The combination with the moving bed, of a swinging lever hung to the bed, a
revolving disc having a pocket, a revolving guard co-acting with said pocket, to
engage the end of said lever, and a curved guide in which said lever end travels,
B

page_text: whereby the travel of the bed is reversed by retarding, stopping, starting, and
accelerating the same, through a compound movement, substantially as described.
4. The combination with the reciprocating bed, of a swinging lever hung to the
bed, a revolving disc having a pocket, a revolving guard co-acting with said
pocket, to alternately engage opposite ends of said lever, and a curved guide at.
each end of the bed, in which the opposite ends of the lever travel, whereby the
motion of the bed is reversed at each end of its run, by retarding, stopping,
starting, and accelerating the same through compound movements, substantially as
described.
5. The combination with the bed, and a rack and pinion mechanism for driving
it during the major part of its run in either direction, of a swinging lever hung to
the bed, a revolving disc having a pocket, and a revolving guard co-operating with
said pocket, to engage the end of said lever, and reverse the movement of the bed,
by retarding, stopping, starting, and accelerating the same by a crank like motion,
substantially as described.
6. The combination with the bed, and a rack and pinion mechanism for driving
it during the major part of its reciprocation, of a swinging lever hung to the bed,
a revolving disc having a pocket, and a revolving guard co-operating with said
pocket to alternately engage opposite ends of said lever, and reverse the movement
of the bed at each end of its run, by retarding, stopping, starting, and accelerating
the same by a crank like motion, substantially as described.
7. The combination with the bed, and a rack and pinion mechanism for driving
it in either direction, of a swinging lever hung to the bed, a revolving disc having
a pocket, a revolving guard co-acting with said pocket, to engage the end of said
lever, and a curved guide in which said lever end travels, whereby the travel of
the bed is reversed by retarding, stopping, starting, and accelerating the same
through a compound movement, substantially as described.
8. The combination with the bed and a rack and pinion mechanism for driving it
during the major part of its reciprocation, of a swinging lever hung to the bed, a
revolving disc having a pocket, a revolving guard co-acting with said pocket, to
alternately engage opposite ends of said lever, and a curved guide at each end of
the bed in which the opposite ends of the lever travel, whereby the travel of. the
bed is reversed at each end of its run, by retarding, stopping, starting, and
accelerating the same through compound movements, substantially as described.
9. The combination with the revolving pocket disc P and revolving guard 2, of
the bed B, rocking lever L, and spring rods 31, 32, substantially as described.
10. The combination with the pinion racks 21, 22, pinion 11, revolving pocket
disc P, and cam 26, of means coupling said cam and pinion, and gearing connecting
the said pinion and disc, whereby timely relative co-operation is accomplished,
substantially as described.
11. The combination with the pocket disc, guard disc, pinion 10, and shaft 12, of
gearing connecting the two, and proportioned to impart to said discs differential
rotative movements, substantially as described.
12. The combination with the reciprocating bed, of two levers pivoted to the
bed, and geared together so as to swing concertedly, a revolving disc having a
pocket, and a revolving guard co-operating with said pocket, to alternately engage
the outer ends of said levers, and reverse the movement of the bed at each end of
its run, by retarding, stopping, starting, and accelerating the same, substantially as
described, and as shown in Figures 10 to 19.
13. The combination with the reciprocating bed, of two levers pivoted to the
bed, and geared together so as to swing concertedly, a revolving disc having a
pocket, a revolving guard co-operating with said pocket, to alternately engage the
outer ends of said levers, and a curved guide at each end of the bed, in which the
outer ends of said levers travel, whereby the motion of the bed is reversed at each
end of its run, substantially as described, and as shown in Figures 10 to 19.
14. The combination with the bed and a rack and pinion mechanism for driving

page_text: it during the major part of its reciprocation, of two levers pivoted to the bed and
geared together so as to swing concertedly, a revolving disc having a pocket, and a
revolving guard co-operating with said pocket, to alternately engage the outer
ends of said levers and reverse the movement of the bed at each eud of its run, by
retarding, stopping, starting, and accelerating the same, substantially as described
and as shown in Figures 10 to 19.
15. The combination with the bed and a rack and pinion mechanism for driving
it during the major part of its reciprocation, of two levers pivoted to the bed, and
geared together so as to swing concertedly, a revolving disc having a pocket, a
revolving guard co-operating with said pocket, to alternately engage the outer ends
of said levers, and a curved guide at each end of the bed in which the outer ends
of said levers travel, whereby the notion of the bed is reversed at each end of its
run, substantially as described, and as shown in Figures 10 to 19.
16. The combination with the moving bed, the two levers pivoted thereto, and
connected so as to conjointly swing in opposite directions, a revolving pocket, and a
revolving guard co-operating therewith, of guide rails as 31ª, 32, or 33", 34*, for
supporting said levers in the upper or lower positions to which they are moved by
the pocket and guard, substantially as described and as shown in Figures 10 to 19.
17. The combination with the reciprocating bed, two levers pivoted thereto, and
connected so as to conjointly swing in opposite directions, a revolving pocket, and
a revolving guard co-operating therewith, of guide rails 31, 32, 33, and 34, for
supporting said levers in the upper and lower positions to which they are moved by
the pocket and guard, substantially as described and as shown in Figures 10 to 19.
18. The combination of the pocket disc, shaft 12, pinions 10, 11, shaft 13,
pinion 28, and movable guard disc, substantially as described and as shown in
Figures 10 to 16.
Dated thin Oth don of Ma- 1902
NEWTON & SON,
Agents for the Applicant.