Improvements relating to Printing and the like Machinery Presses.
Year: 1899

page_text: Date of Application, 12th Seat., 1899
1000
[Communicated from abroad by ALISON R. STONE, of 181, Madison Street,
Chicago, Illinois, United States of America, Mechanic.]
Improvements relating to Printing and the like Machinery Presses.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord
Street, Liverpool, and 6, Bank Street, Manchester, both in the County of Lan-
caster, and Lower Temple Street, Birmingham, in the County of Warwick, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates in general to printing or like presses, and in particular
to a construction or an arrangement thereof, especially adapted for use in taking
proofs.
In the machine in which I embody my invention, I arrange a table or plat-
form for the form from which the copy is to be taken. At the ends of this
table or platform, are arranged pairs of sprocket wheels, upon which travel endless
sprocket chains carrying one or more inking rollers and an impression roller.
The chains travel over and under the table so that first the inking roller and
then the impression rollers are successively drawn over the form. The inking
rollers in passing over it, ink it, and the impression roller causes an impression
to be made upon the paper, it being understood that the paper is properly placed -
upon the form after the passage of the inking rollers.
The inking rollers are inked by a suitable inking surface arranged below the
bed or table. This inking surface is in the form of a couple of inking discs, or
an inking platen or other suitable device.
The bearings carrying the inking and impression rollers travel on tracks in
passing below the bed or table. The inking roller bearings are so constructed
as to allow the inking rollers to travel upon the inking surfaces and thereby
become inked; while the impression roller bearings are so constructed as to
lift the impression roller above such surface and thereby prevent it becoming
inked. The machine is also provided with mechanism by which it is auto-
matically stopped after the taking of each impression, the mechanism shown
consisting of a clutch, and a lever for automatically operating the same. This
lever is actuated by the impression roller, but is not actuated by the inking
rollers.
The clutch is further arranged so that it can be held by hand in such a
position that the impression roller will not actuate it; in this way the machine
can run continuously, if desired.
The printing platen is automatically shifted so that it presents a different
path of travel to the inking rollers, this shifting taking place automatically
after each passage of the inking rollers over it.
The inking platen is further inked from an inking fountain, which is also
automatically operated after each passage of the inking rollers.
There are also provided, when desired, with vertically adjustable spring con-

page_text: trolled guides, by which the impression roller is held down upon the form, but
which allow it is rise when necessary to accommodate variations in type in the
various forms used.
Total
101
f
1.
1000
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C.,
Agents for the Applicant.
Improvements relating to Printing and the like Mach nery Presses.
I, WILLIAM PHILLIPS THOMPSON, F.CS., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord
Street, Liverpool, and 6, Bank Street, Manchester, both in the County of Lan-
caster, and Lower Temple Street, Birmingham, in the County of Warwick, Civil
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:-
My invention relates in general to printing or like presses, and in particular
to a construction or arrangement thereof especially adapted for use in taking
proofs.
Prominent objects of my invention are to provide a practical cheap and durable
construction or arrangement of printing or like press; to simplify the construc-
tion and operation of the same as much as possible; to dispense with complicated
and intricate mechanism for alternately inking the form and taking the impres-
sion or copy therefrom; to arrange for a satisfactory and efficient continuous
supply of ink for inking the forms; to arrange for the automatic stoppage of
the press after the taking of each copy, if desired; and to provide other novel
features tending to increase the efficiency and utility of these presses.
To the attainment of the foregoing and other desired ends, my invention
consists in matters hereinafter set forth.
In the accompanying drawings,
Figure is a plan of a printing or like press embodying my invention;
Figure 2 is a longitudinal vertical section of the same taken on line 2--2,
Fig. 1;
Figure 3 is a transverse vertical section of the upper part of the press taken
on line 3-3 of Fig. 2.
Figure 4 is a view partly in plan and partly in horizontal section, of the
inking device;
Figure 5 is a modification of such device;
Figure 6 is an enlarged view of a detail of construction;
Figure 7 is a vertical section of a portion of a modified form of another detail
of construction also on a larger scale;
Figure 8 is an enlarged elevation of the device for automatically stopping
the press after the taking of each copy; and
Figure 9 is a view of such device, partly in vertical section and partly in
elevation, and on a still larger scale.
In the accompanying drawings I have shown the preferred embodiment of my
invention. But I consider that in its broader features it can be embodied
in other types or forms of machines, and so do not desire to be understood as
limiting myself to the exact type or form of machine herein shown, or to the
specific devices which I employ therein.

page_text: In this machine the form X from which the copy either in the shape of a proof
or a copy for use, is to be taken, is arranged in position upon a horizontal
bed or table A which forms a support or holder for it. This bed or table A is
suitably supported between said uprights or frame pieces a, a, which are in turn
supported by legs A¹, A', and are connected together so as to form a machine
frame-work, by connecting bars or rods a¹, a¹. When so arranged upon the bed
or table A the form is first inked by a suitable inking device or devices, such
as the inking rollers B, B; then the paper Y upon which the. copy is to be
made, is placed over the form either by hand or otherwise; then the paper is
pressed against the form by a suitable impression device, such as the impression
roller C so as to make the proper copy upon it; and finally the paper is lifted
from the form with an impression thereof upon it.
In accordance with my invention, the inking device, such as the rolls B, B,
and the impression device, such as the roll C, are successively drawn in proper
order over the form X so as to first ink the form and then make the impression
upon the paper;
and they are then returned by a different way or path of
travel, instead of being returned over the same route on which they were advanced.
In this way they are not returned so closely above the form as to necessitate
lifting the inking and impression device in order to avoid the same; and con-
sequently, I dispense with all intricate and complicated mechanism for that
purpose. As a simple, practical and preferred embodiment of this principle, I
draw the inking rollers B, B, and the impression roller C successively and in
the proper order over the form X by an endless carrier, such as a couple of
sprocket chains D, D. In such case I arrange the sprocket chains to travel over
a couple of pairs of sprocket wheels E, E, carried by shafts desirably mounted
in the side uprights a, a, at the opposite ends of the bed or table A. By such
arrangement the inking rollers B, B, and compression roller C, after passing
over the form, return below the bed or table A. The inking and impression
rollers B, B, and C, can be attached to the sprocket chains D by any suitable
devices, which will allow the travel of the chains about the sprocket-wheels E, E.
As a simple arrangement, and as a matter of further and specific improvement,
I attach them by means of the devices shown in the drawings. These devices
involve suitable bearings or journals G, G, in which the roller spindles can be
mounted. The lower side portions of each of these bearings or journals G, G,
extend downwardly so as to embrace the opposite sides of the portion of the
chain to which it is to be attached. These downwardly extending side portions
are each provided with apertures g, in which the projected ends of one of the
joining spindles or pins of the sprocket chain can be confined; and they are
also provided with slots g' in which a second spindle similarly projecting from
another joint in the sprocket chain, can be confined. In this way the sprocket
chain pin or spindle confined in the slots g can have suitable play to permit
the chain to travel about the sprocket wheels E, E, in an easy manner without
binding. The spindles of the rollers B, B and C are preferably mounted in
these bearings or journals through the medium of an eccentric which can
be suitably, turned so as to properly adjust the respective rollers and which, when
so turned, can be held in proper position, by an adjusting screw g³.
I desirably arrange at the opposite sides of the bed or table A, suitable
tracks H. H, upon which can travel suitable wheels J, J on the opposite ends
of the rollers B B and C. The height of these tracks H H is such as to allow
the inking and impression rollers to travel over the bed or table A at such a
distance above it as to rest properly upon the form X when passing over it.
In this way the impression roller is turned during its advancement over the
bed or table and so does not strike the form in a stationary condition, and thereby
tend to drag the paper over it, but it rolls smoothly and evenly over the paper
without any tendency to displace the same.
In order to prevent the impression roller C from being unduly lifted in passing
over the form X and so to secure the making of an impression therefrom, I

page_text: desirably arrange above the tracks H, H suitably downward facing guides K, K,
which are so positioned as to allow the bearings or journals G G to pass readily
below them. In this way the impression roller is confined so as to substantially
prevent any extent of vertical movement when passing over the bed or table A.
The guides K, K, are conveniently provided by forming flanges at the upper
edge of the side uprights a, a.
As a matter of further improvement I arrange the devices for the inking
rollers B, B, below the bed or table A, in which way they are confined in a space
which otherwise would not be utilized; while at the same time they are pro-
tected from dust and injury.
While any inking device can be employed for this purpose I desirably employ
an inking surface L over which the inking rollers can roll in returning below
the bed or table A, and with which they can make contact so as to procure ink
from it.
In Figs. 2 and 4 I have shown this inking surface provided by a couple of
horizontally arranged circular inking plates or discs M, M, and this is the
arrangement I prefer to use.
When so employed the plates or discs are desirably intermittently rotated
so as to secure an even distribution of the ink upon them, and to such end are
mounted for rotation in suitable bearings or journals provided in the cross-frame
pieces a¹, a¹. When thus mounted they are intermittently rotated by a couple
of reciprocating pawls n, n, which are adapted and arranged to engage ratchet
wheels m, m below the circular discs M, M so as to turn the latter. The
rawls n, n are reciprocated by a reciprocating rod or link N, to which they are
pivotally connected. This reciprocating rod N slides upon the frame pieces a¹, a',
and is guided in its reciprocation by suitable guideways n², n², which work upon
pins 3, 3, formed on said cross pieces a¹, a¹.
The rod N is drawn rearwardly by the arm 2 of the bell crank lever P to
which it is pivotally connected and is drawn forwardly by the tension spring Q,
which has its rear end attached to the rod N, and its forward end attached to
the forward cross-piece a¹. The bell crank lever P is moved rearwardly by the
impression roller C when the latter is drawn about the rear sprocket wheels E, E,
by a hub position of said roller striking against the upwardly and rearwardly
inolined arm of said bell crank lever P. It thereby draws the pawls n, n
past one of the teeth on the ratchet wheels m, m. Upon its release by the for-
ward movement of the impression roller C, after the latter has passed about
the rear sprocket wheels E, E, the bell crank lever P is drawn forwardly by
the spring Q in a way to cause the pawls n, n to turn the ratchet wheels a
distance of one tooth and thereby turn the circular inking plates M a corre-
sponding portion of a revolution. The inking rollers B, B are constructed with
a recess b, at their ends in alignment with the lever arm p of the bell crank
lever P, in which way they fail to strike against and operate said bell crank
lever in their passage about the rear end of the bed or table A. As a result
it will be seen that for each passage of the inking rollers over the inking
dises M, M, the latter are turned a portion of a revolution. It will also be seen
that this movement of the inking discs or plates occurs at a time when the inking
rollers are free and receding from them, it being observed that at the time
the impression roller C is moving downwardly about the rear end of the bed
or table A, the inking rollers B, B are moving upwardly about the forward end
of the same.
As an alternative arrangement of inking device, I have shown in Fig. 5 a
rectangular inking platen M₁ mounted for transverse movement upon a couple
of slideways R, R. This ink platen M can be shifted backward and forward
transversely by a link connection r with a wheel 2 having a ratchet wheel m
which can be actuated by a pawl n on a reciprocating rod N in the manner
heretofore set forth with reference to the mechanism shown in Figs. 2 and 4.
As an arrangement for automatically supplying ink continuously to the inking

page_text: surface L, whether the latter is provided with the circular discs M, M, or the
laterally shifting platen M', I have shown an ink fountain comprising an ink
supply wheel or roller W supported in bearings formed at the end of an ink
box in such a way that the lower portion of the roller W is continually
submerged in the ink which it is understood the box contains. The roller W
is arranged in such position that its upper surface is substantially in alignment
with the inking surface L in which way the inking rollers B, B, come in contact
with it and receive ink from it in passing to such inking surface L. The box WT
is conveniently supported on a shelf 10, w₁, which is, in turn, supported by a
bracket attached to the legs A¹. This ink supply wheel W is desirably inter-
mittently rotated at each revolution of the inking wheels B B by a pawl Z (Fig. 1)
which is pivotally connected with the rocker arm 72 on the rock shaft carrying
the bell crank lever P, and which acts against a ratchet wheel w with which the
roller W is provided.
I desirably provide below the bed or table A, a couple of tracks S, S upon which
the bearings or journals G, G of the rollers can travel. These tracks S, S are
conveniently provided by flanges formed on lower edges of the frame uprights a, a,
The journals G, G of the inking rollers B, B are of such a size as to allow
these rollers to rest upon the inking surface L during their return below the
bed or table A; but in order to prevent the impression roller C from resting
upon this inking surface and so becoming undesirably coated with ink, the
journals G, G of this roller are made larger, so that the impression roller in its
return passage is lifted a slight distance above the inking surface.
The impression roller C can be of any suitable construction, but, as a matter
of preferred arrangement, it is constructed with an outer cylinder c¹ of hard
material, and an inner cylinder of soft spongy material. By this construction
it will make a satisfactory and clear impression upon the paper, and at the same
time, will accommodate itself to such slight variations in height as may occur
in different forms.
In order, however, to additionally or alternately provide for variations in
the height of forms, I can make the upper guides K, K, vertically adjustable
and subject them to downward tension as shown in Fig. 7. In this figure I
have shown side uprights a a, extended upward more than in the previouslys
described construction, and the guides K, K suspended from flanges on the upper
edges of these side uprights a, aby bolts a 5, and normally pressed downward
by springs V, V, which are confined between the said flanges and the guides.
By such arrangement the impression roller is normally pressed downward so
as to always rest upon the forms, irrespective of their heights, it being under-
stood that the tracks H, H, upon which the rollers run are of such a height
as to allow the roller to come in contact with the shortest form used.
It will be understood that although I have shown but two inking rollers B, B,
I can employ any suitable number, either greater or less than the number
shown.
The press could be suitably driven either by hand or by a power connection,
such as the belt shown traveling over a pulley T on the rear sprocket shaft F.
In the latter case the pulley T can be made rigid with the shaft, so as to drive
the
press continuously as long as the belt runs."
As a preferred arrangement, however the pulley T is mounted loosely on its
shaft, and is associated with a clutch device by which the press can be either
allowed to run continuously, or be automatically stopped after the making of each
copy.
While any suitable clutch device can be employed for this purpose, I have
shown herein a device which is particularly well adapted for use in connection
with a press of this kind, and which I consider a matter of further and specific
improvement.
In this device, which is shown in connection with the press in Figs. 1 and 2,
and alone in detail in Figs. 8 and 9, I secure a couple of arms 22, rigidly to

page_text: the shaft F, upon which the pulley T is loosely mounted, so that they are con-
tinuously rotated by it. Each of these rotating arms 2, 2, carries a reciprocating
rod or link 3, which is loosely mounted in a suitable guide or holder 4, formed
at the end of the arm 2 carrying it. This mounting allows the rods or links 3, 3
to slide readily back and forth relatively to the arms 2, 2, in a general radial
direction, and also to swing slightly from side to side about their points of con-
nection with the arms. The outer ends of these rods or links are pivoted with
friction shoes 5, 5, which, when the rods or links are moved outwardly, press
against the interior of the rim of the pulley T, and thereby cause the latter to
rotate the arms 2, 2, and the shaft carrying the same. The inner ends of the
rods or links 3, 3, are bent laterally so as to form pins 6, 6. The latter are
engaged by a friction wheel.7, which is mounted loosely on the shaft F. By the
rotative movement of this wheel 7 relatively to the arms 2, 2, in one direction,
the rods 3, 3 are projected outwardly to an extent to cause the friction shoes 5, 5,
thereon to engage the pulley T; while by its rotative movement in the opposite
direction, the rods are retracted so as to cause the withdrawal of the friction
shoes from the pulley. The arms 2, 2 and the loose friction wheel are engaged
by retractile springs 8, 8, which hold the friction wheel 7 normally in the posi-
tion by which the rods 3, 3, are projected outwardly so as to cause the friction
shoes 5, 5 thereon to engage the pulley T. In this way the friction shoes 5, 5
are held normally against the pulley rim so that the pulley 7 normally rotates
the shaft F and thereby normally continuously operates the press.
Obviously, the retardation of the friction wheel 7 would cause the rotation
of the same relatively to the arms 2, 2, and would thereby cause the retraction
of the rods 2, 2, the withdrawal of the friction shoes 5, 5, from the pulley rim,
and the consequent stoppage of the machine. The device I have shown for thus
retarding the rotation of the friction wheel 7, consists of a friction block 9 which
can be reciprocated into and out of contact with the rim of the wheel 7. The
rim of the wheel 7 is desirably grooved and the block 9 correspondingly beveled.
The block 9 is conveniently reciprocated by a reciprocating link 10, to which
it is secured. The link 10 is guided by pins 11, 11 which project from the
side a, on the machine frame, and work in slots 13, 13, formed in the link.
The latter is normally held in position to retain the friction block 9 out of
contact with the friction wheel 7, by which a retractile spring 14, whose forward
end is attached to a pin 15 on the machine frame, and whose rear end is attached
to the forward end of the link 10. As a simple and convenient arrangement,
the link 10 is drawn rearwardly so as to bring its friction block 9 into contact
with the friction wheel 7 by the bell crank lever P, in which was the press is
stopped with the impression and inking rollers at the opposite ends of the bed or
table A.
To such end, the rear end 16 of the link 10 is bent inwardly as best shown
in Fig. 9, so as to be engaged by the arm p' of the said bell crank 1', when
the latter is moved rearwardly to the shaft, the inking plate or plates, and operate
the ink fountain.
The rear portion of the link 10 is capable of being moved laterally to an extent
to permit of its bent end 16 being brought into position either to be struck and
engaged by the bell crank lever arm p', or to allow said arm to pass the end of
said portion 16 without striking. An expansive spring 17 (Fig. 9) forces the
rear portion of the link 10 normally into position to be struck by the bell
crank arm p', and to be moved thereby so as to bring the friction block 9 into
contact with the friction wheel 7, every time the impression roller passes around
the rear end of the table. By simply pressing the rear end of the link 10
outwardly against the spring 17, either by grasping its handle 20 with the hand,
or by some suitable device, the bent end 16 thereof is moved so as to prevent
the bell crank arm from striking it. Obviously, by such arrangement. the
press will normally be stopped after the taking of each impression, but it can
be allowed to run continuously by simply pushing the rear portion of the link 10

page_text: outward. It will be seen that by my invention I secure a practical and simple
press capable of being constructed at a very low cost, of being operated in an
effective and satisfactory manner, and of being easily handled by persons unskilled
in the use of machinery. It will be further seen that this press is particularly
well adapted for use as a proof press, in that it allows the forms to be easily
and quickly introduced and removed, and also allows paper of any form or size
to be employed without inconvenience or delay.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1-In a press, the combination of a bed or table upon which the form can
be arranged; a couple of flexible endless carriers arranged to travel along the
sides of the bed or table, and provided with inking and impression rollers;
wheels for the endless carriers, mounted at the end of a bed or table; tracks
upon which the said rollers can roll while passing over the bed or table; an
inking surface arranged below the bed or table; guides associated with the bed
or table, and tracks associated with the inking surfaces; and bearings or journals
for the inking and impression rolls, said bearings or journals having connections
with the endless carriers adapted to permit the latter to travel about their carrying
wheels, and the impression roller bearing journal being constructed so as to
engage the guides associated with the bed or table in a way to prevent the impres-
sion roller from rising in passing over the form, and also so as to engage the
tracks associated with the inking surface and thereby prevent said roller from
making contact with the latter, and the inking roller bearings or journals being
constructed so as to allow the inking rollers to travel upon the inking surface,
substantially as and for the purpose set forth.
2 In a press, the combination with the bed or table; the shiftable inking
surface, and mechanism for shifting the same; of the endless carrier carrying
inking and impression devices, one of which is adapted to actuate the inking
surface shifting mechanism, while the other or others is or are not so adapted,
substantially as and for the purpose set forth.
3-In a press, the combination with the bed or table; a swinging lever, and
mechanism operated by said lever; of the endless carrier carrying inking and
impression rollers, whereof the impression roller is constructed so as to strike
said lever and thereby automatically actuate said mechanism, while the inking
rollers are constructed with grooves or recesses which permit them to pass the
lever without actuating it, substantially as and for the purpose set forth.
4 In a press, the combination with the bed or table; the endless carrier
provided with inking and impression devices; wheels for said carriers; and
with means for stopping the press; of a device carried by the endless carrier and
adapted to automatically actuate the stopping mechanism, substantially as and
for the purpose set forth.
5 A press comprising a bed or table upon which the form can be arranged;
sprocket wheels mounted at the opposite ends of the bed or table; sprocket
chains carried by said sprocket wheels and arranged to advance over the bed or
table and to return under it; inking devices supported below the bed or table:
inking and impression rollers carried by the sprocket-chains and connected there-
with in such a way as to cause the inking rollers to travel over and in contact
with the inking discs, and to allow the impression roller to pass over without
coming in contact therewith; and means for automatically rotating the inking
discs, substantially and for the purpose set forth.
A press comprising a bed or table upon which the form can be arranged;
rotating wheels arranged at the opposite ends of the bed er table; chains, or the
like, carried by said wheel and arranged to advance over the bed and to return
under it; an inking surface arranged below the bed or table; inking and im-
pression rollers carried by the chains or like devices; tracks upon which the

page_text: rollers can travel in passing over the bed or table; journals or bearings by which
the inking and impression rollers are attached to the endless chains whereof
those of the inking roller are shorter vertically than that of the impression roller;
guides under which the journals or bearings pass as the rollers advance over the
bed or table, for holding the impression roller against rising in passing over the
form; tracks upon which the roller journals can travel in passing below the bed
or table, said tracks being positioned so as to allow the inking rollers to rest
upon the inking surface in passing over it, and to support the impression roller
above and out of contact therewith; and means for shifting the inking surface
upon each revolution of the inking and impression rollers, substantially as and
for the purpose set forth.
7 In a press, the combination with the bed or table; the endless carrier pro-
vided with the inking and impression devices; wheels for said carriers; the
shiftable inking surface, and mechanism for shifting the latter; of a device
carried by the endless carrier and adapted to automatically actuate said shifting
mechanism so as to cause the same to automatically shift the inking surface,
substantially as and for the purpose set forth.
8 In a press, the combination of a swinging lever; means for actuating the
same after the taking of each impression; a clutch for automatically stopping
the press; a longitudinally and laterally shiftable link arranged to operate the
clutch when shifted longitudinally and adapted to be automatically engaged
and shifted longitudinally by said lever, and also to be moved laterally so as to
prevent its being engaged by the lever; and a spring for holding the link
normally in position to be engaged by the lever, substantially as and for the
purpose set forth.
9 In a press, the combination with the bed or table; the inking and impression
devices, and with mechanism for operating the latter; of a shiftable inking
surface; mechanism for automatically shifting the inking surface after the taking
of each impression, and also for either automatically stopping the press, or allow-
ing the same to run continuously, at will; and means for simultaneously actuating
both of the ink surface shifting mechanism and the stopping mechanism, sub-
stantially as and for the purpose set forth.
10 In a press, the combination with the endless chain or the like; the inking
rollers carried thereby, and the wheels for the chains; of an inking surface
capable of shifting movement; a ratchet wheel connected with such surface so
that when turned it will shift the same; a pawl acting upon said ratchet wheel;
a reciprocating rod actuating the pawl; a bell crank lever having one of its arms
pivotally connected with the reciprocating rod, and the other extended in a way
to cause it to be struck and actuated by the impression roller; and a spring for
automatically returning the bell crank lever to its original position and thereby
actuating the ratchet wheel so as to shift the inking surface, substantially as and
for the purpose set forth.
11 In a press, the combination with the bed or table; the inking and impres-
sion rollers, and means for advancing such rollers over the bed or table; of tracks
upon which the rollers can travel; vertically adjustable guides suspended above
the path of travel of the impression roller bearings or journals; and means for
subjecting said guides to tension tending to force them normally downward upon
said impression roller bearings or journals, substantially as and for the purpose
set forth.
12 In a press, means for automatically stopping the same, comprising a pulley
loose on the driving shaft; rotating arms fast on the same; sliding arms carried
by said rotating arms and provided at their outer ends with friction shoes adapted
to engage the pulley rims; a friction device, such as the friction wheel 7, mounted
loosely on the driving shaft, and engaged by the inner ends of the sliding arms,
so that when turned in one direction relatively to the fixed arms, it will throw
the former outward into position to cause their friction shoes to engage the
pulley rim, and when turned in the other direction it will retract the same so

page_text: as to withdraw their friction shoes from the pulley rim; spring means for holding
the friction device in position to cause the engagement of the friction shoes with
the pulley rim; and mechanism for automatically applying friction to the loose
friction device so as to cause it to retract the sliding arms and thereby withdraw
the friction shoes thereon from the pulley rim, substantially as and for the pur-
pose set forth.
13-In a press, means for automatically stopping the press, comprising a
pulley loose on the driving shaft; rotating arms fixed thereon; sliding arms
carried by the fixed arms and provided at their outer ends with friction shoes
adapted to engage the pulley rims; a friction wheel mounted loosely on the
driving shaft, and engaged by the inner side of the sliding arms; a spring for
holding said loose friction device in position to retain the friction shoes on the
sliding arms normally in engagement with the pulley rim; a sliding link pro-
vided with a friction block adapted to engage the rim of the friction wheel 7;
a lever arranged and adapted to engage and operate the sliding link; and mechan-
ism for automatically actuating the said lever, substantially as and for the
purpose set forth.
14. In a press, the combination with the shiftable inking surface, and with
mechanism for shifting the same, and also the device for stopping the press, of
mechanism for automatically and simultaneously actuating both the mechanism
for shifting the inking surface, and the device for stopping the press, sub-
stantially as and for the purpose set forth.
Dated the 31st day of May 1900
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.