Improvements in Power or Signature Presses.
Year: 1894

page_text: Date of Application, 6th Dec., 1894-Accepted, 12th Jan., 1895
COMPLETE SPECIFICATION.
Improvements in Power or Signature Presses.
We, CHARLES SEYBOLD, of Dayton, Montgomery County, State of Ohio,
United States of America, Manufacturer and THE SEYBOLD MACHINE COMPANY,
a corporation having its principal office at Dayton aforesaid, Manufacturers of
Bookbinders' Machinery, 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 object of our invention is to produce a press for dry-pressing signatures or
bundles of paper, either with or without the use of fuller-boards, which press
will do the work more quickly and satisfactorily than the ordinary hydraulic press
now commonly used. This object we attain by means of the link or toggle
connection between the sleeve on the driving-screw and the movable head, as will
more fully hereinafter appear.
In the accompanying drawings,
Figure 1 is a perspective view taken from one side of our improved press, the
movable head being shown back almost to its extreme limit.
Fig. 2 is a vertical cross-section taken on the line 2 2 of Fig. 1, looking toward
the left hand in said Fig. 1.
Fig. 3 is a vertical cross-section taken on the line 3 3 Fig. 1, looking toward the
left hand in said Fig. 1.
Fig. 4 is a rear end view of the press shown in Fig. 1, showing the preferred
mechanism for operating the pressure-screw in opposite directions, also preferred
form of mechanism for starting and stopping the rotation of said screw, the latter
operation being accomplished automatically.
Fig. 5 is a horizontal section through the driving-gears, split bands within said
gears, and beveled clutch, showing the relative position of each on the driving-
shaft when not in operation.
Fig. 6 is a perspective view, detached, of the beveled clutch, showing the
beveled pin or bar attached to one side thereof for automatically stopping the
machine when a certain degree of pressure is attained, as will hereinafter
appear.
Fig. 7 is an inner or face view of the gear and split band therein shown at right hand
in Fig. 5, with the preferred form of device attached thereto for regulating the
degree of pressure requisite to automatically stop the pressure and the operation of
the press.
Fig. 8 is a side or edge view of the split band and mechanism for expanding same
within the driving-gear stown in Figs. 5 and 7, said view being taken with said
band removed or detached from the driving-shaft and its gear.
Fig. 9 is a top view of the driving-screw, nut, and link connection between said
nut and the stationary and movable head of the press, the dotted lines indicating
the position of said link connection and nut when the movable head has been forced
out to almost its extreme limit.
Fig. 10 is a detached view of pin m² and its pressure-spring.
Fig. 11, is a front view of the unter head shown at right hand in Fig. 1, showing
the preferred means for adjusting said head on its supporting rols, and
Fig. 12, is a detail sectional view showing one and the preferred mode of
connection between the sprocket wheels and the head.
Our invention consists, primarily, in the mechanism and means afforded for
driving the movable head A, which consists of the compound toggle connection

page_text: between said head and the stationary arms B, which connection is made up of arms a
and b, pivoted, respectively, to said stationary arms B and head A at their outer
ends and pivotally connected at their meeting ends. as shown in Figs. 1 and 9.
Between the meeting ends of arms a band on the same pivotal connection are
ivoted the ends of the short arms d d, the other ends of said latter arms being
pivotally connected to suitable extensions formed on the nut D, as more
clearly shown in Fig. 9, said nut traveling on the driving-screw C as the latter is
rotated.
The
Our invention also consists, in connection with the aforementioned device for
driving the head, of the means for alternately rotating the driving-screw in
opposite directions from one and the same band-wheel without changing the motion
of the main driving-shaft E. This mechanism consists of the gear or mitre
wheels F, F, and F2, beveled clutch G, bifurcated arm g, push-rod H, and split
bands or pulleys J and their connecting mechanism for expanding said bands.
gear F is keyed to the rear end of screw C, (see Fig. 1,) which latter rests and
rotates in a suitable bearing in the upright frame-support B', the opposite end of
said screw rotating in a socket a², centrally cast or otherwise connected to the
movable head A. This screw C is retained in position longitudinally by means of
the collars at either side of the stationary frame-support B', as shown. The
gears F and F are loosely connected to the shaft E and retained in position
thereon by means of the journal-bearings e, mounted on the frame-supports E', as
shown in Figs 1 and 4. These gears F and F mesh with gear F, as shown. The
beveled clutch G and split bands or pulleys J J are connected to shaft E by means
of a feather-and-groove connection, as shown in Fig. 5, by reason of which said
clutch and bands constantly revolve in one direction with said shaft after power is
applied thereto through the medium of band-pulley E³.
E2 is a loose pulley arranged to operate in the usual manner.
The bifurcated arm g at its lower end portion rests in and partially encircles the
groove g in clutch G, the upper end of said arm being connected to the rod g²,
which latter rests and slides in the brackets g³. This rod g² has a bevelled or cut-
away ortion near each end, which forces the pins g' down within the case g³, said
pins being supported by a spring. (Not shown.) This arm g is also provided at
top with a lug h, which latter rests in the elongated opening in the outer end of
push-rod H, as shown in Fig. 4. The function of pins g in connection with the
beveled portions on rod g² is to retain said rod in position, in order that the clutch
may be held in a central position between the gears F' F2, except when said rod is
forced longitudinally in either direction.
The split ban is consist of two semicircular portions connected to a central
hub K by means of the solid cast portion 1, (see Fig. 7,) said semicircular portion:
resting within the inner countersunk face of gears F1 and F, as shown in Fig. 5.
Between the meeting ends of the two semicircular portions comprising said friction
lands is pivoted a lever M, having a rectangular-shaped shank m between said
meeting end portions, against which shank said portions constantly impinge, as
shown in Figs. 7 and 8. To the outer end of this lever M is connected a bracket m',
apin m² extending through the extension of said bracket and the end of lever M, as
shown in Figs. 4, 7, and 8. This pin m² has a flange m³ on it, as shown in Fig. 10,
which flange rests in a countersunk portion in the top face of lever M. The upper
end of più m² enters the hollow nut mt, which latter is screwed into a screw-
threaded opening in the extension of bracket m'. A coiled spring or other elastic
material is interposed between the flange ms and lower portion of nut m', which
spring regulates the amount of pressure of pin m² on the face of clutch G, as will
appear from the operation presently to be described.
The aforedescribed construction refers only to the clamp mechanism shown at
right hand in Fig. 5 in connection with the gear which forces the movable head
inward to compress the signatures or other bundles of paper. The gear F2 has a
similar split band J and lub K and lever M, but differs from the other mechanisin
aforedescribed in that the outer end of lever M has a set-screw m, which

page_text: is positive in its action and is not controlled by any elastic pressure, us
presently appear.
Around the inner face of the hub K of the split band J (shown at right hand
in Fig. 5) is an annular recess n, a stationary pin n' projecting from the inner face
of gear F¹ into said annular recess. This hub K has a recess n² extending from its
(made
outer face into the annular recess n, in which recess n² the beveled tongue n³
fast to one end portion of clutch G) projects, when said clutch is thrown into
contact with the pin m² in the manuer presently to be described in connection with
its operation.
The movable head A is supported and slides on the rods O, which latter pass
through projections of the frame-supports B1 and B2, as shown. To the outer ends
of rods O is connected the adjustable head A', the heads A and A¹ having cross
intersecting grooves p in their outer faces, as shown in Fig. 3, which grooves lead
to the enlarged cross intersecting openings P. (Shown in Fig. 1.) The purpose
of these grooves and openings P is to permit the operator to pass his hand into
the openings P and pass the cord around the bundle after it is compressed, the cord
passing through the recesses p and around the bundle.
If desired, suitable end boards (not shown) may be used to protect the ends of
the bundle of signatures.
We do not lay any claim to the construction of these heads A. A¹; neither do we
lay any claim to the process of tying the bundles herein set forth, as said process
and construction of heads are old and well known in connection with baling-presses
for various purposes.
The push and pull rod H slides in a bearing in the top of frame B¹ and also in
a bearing at the top of extension D', the latter being connected with nut D. Said
nut D also has a downward extension D2, the lower bifurcated portion of which
partially encircles one of the brace-rods O, as shown in Fig. 2. This latter
projection serves to steady the nut as it travels back and forth on the screw-
rod C.
To the rod H is secured a set-collar R, which is for the purpose of automatically
stopping the operation of the movable head in its back-stroke after having
compressed the bundle, as will appear from its operation hereinafter given.
In the head A are preferably a number of screw-threaded openings s, into which
the supporting-rods $ are screwed, the opposite ends of said rods passing into
corresponding openings (not screw-threaded) in the face of the adjustable head A',
which latter is hollow. This latter head is of sufficient thickness to accommodate
the length of movement of the movable head A. The rods S are preferably three
in number to form a V-shaped trough, into which the signatures or other bundles
are placed before being compressed and tied.
Having described the aforesaid features of our invention and their location and
After having placed
construction we will now describe the operation of the same.
the desired number of signatures in position on the rods S, either with or without
fuller-boards, the operator grasps the handle H' on rod H and pushes said rod to
the left in Fig. 1 toward the gear-operating mechanism, which operation causes the
arm g (see Fig. 4) to slide with rod 92, and with said arm the clutch. G is moved
toward the right hand in said Fig. 4, the beveled face of said clutch being forced
beneath the pin m², which operation causes the outer free end of lever M to elevate
slightly, which latter movement of said lever causes the free ends of band J to
become expanded through the medium of the rectangular head m on said lever.
The expansion of said split band J causes the latter to engage and impinge agai.ist
the inner flanged face of gear F1 and imparts a rotary motion thereto, and the
motion imparted to said gear is transmitted to the screw-rod C through the medium
of gear F. So soon as the screw-rod begins to rotate in the proper direction the
nut D begins to travel thereon toward the right hand, as shown in Fig. 1, and so
soon as the nut begins to travel thereon the short arms d d force the connecting
ends of arms a boutward toward a longitudinal plane, as shown by dotted lines
It will
in Fig. 9, and in this manner the head A is made to move on the rods ().

page_text: be readily seen that this construction affords a compound toggle connection, which
is very powerful, for operating the head. The degree of pressure on the bundle to
be pressed is in the present illustrative instance governed by the tension of the
spring or other elastic substance which encircles the pin m³, and bears upon its
annular flange m³. As aforedescribed, this pin m³ impinges against the beveled
face of clutch G and also causes the two portions of band J to expand within the
gear F, and so soon as the pressure of the head overcomes the friction of the split
band within the gear, which friction is regulated by the tension of the coiled spring
bearing on collar m³ on pin m², said band will slip within said gear until the pin n',
which projects within the annular groove 2., comes in contact with the beveled
tongue non clutch G, at which time said clutch is forced away from the pin m²
and the split band J assumes its normal position and the rotation of gear F¹ is
stopped. After the bundle has remained under pressure the requisite length of
time and having securely tied said bundle the operator again grasps the handle H'
and pulls the rod toward the right hand in Fig. 1, which operation causes a reverse
movement of arm g and clutch G, said vertical clutch engaging the screw m³, which
causes the lever M to expand the bands J in the manner aforedescribed, and thus
impart a rotary mction to gear F2, and any motion imparted to gear F2 is trans-
mitted to the screw-rod C through the medium of gear F, but in a direction
opposite to that aforedescribed. This latter rotary motion of the screw-rod causes
the nut D to recede until the upward projection D' strikes the set-collar R on
rod H, at which time said rod is forced backward until the clutch G is drawn away
from the set-screw m³, at which time the expanded friction-band J assumes its
normal position and the motion of gear F2 is stopped.
If desired, an additional set-collar similar to collar R may be employed on the
opposite side of the projecting arm D¹ for automatically stopping the movement of
the head while compressing the bundle; but if this latter means be employed the
pressure will be stopped at a given distance without regard to the amount of
pressure attained, and for this reason the means aforedescribed for stopping
the movement of the head when a certain degree of pressure is attained is
preferred.
The degree of pressure required to cause the split bands J to slip in gear Fl
is governed by the tension of the spring on collar m³, and this may be
increased or diminished by means of the nut m', which bears against said
spring.
The advantages of our improved press are many and will be apparent to those
having occasion to use such a press. In the first place we are enabled to accumulate
as much pressure as can be had by the use of any of the ordinary hydraulic presses
now in use and the space occupied is considerably less. A second and very valuable
feature is that by reason of the compound toggle connection between the movable
head and the traveling nut we are enabled to move the head rapidly at the start
when great pressure is not required; but as the pressure is increased the movement
of the head is decreased, and the nearer the arms a b approach a longitudinal plane
the less perceptible will be the movement of the head. In the reverse movement
the head very slowly recedes from the bundle at start, but gradually increases
until the movement becomes very rapid at the fins.
The outer head, A', is made adjustable on the rods, O, in the following preferred
manner:
These rods are screw-threaded for a greater portion of their length on the outer
end thereof, and are each provided with a sprocket-wheel, T, the latter having an
integral sleeve, t, which is provided with a peripheral groove 2. The head, A', is
preferably provided with face-ribs, t, to one of which is provided with a bracket-
bearing, T2, on which is mounted a driving sprocket-wheel T3, as shown. This
bracket is preferably provided with the elongated openings, V, for adjustment or
tightening of the drive-chain, W, which engages with each of the sprocket-wheels, T,
and the driving-sprocket T.
The head, A', is provided with stationary flanged projections, x, which latter

page_text: project and engage within the groove of each sleeve t of sprockets 1, as more
clearly shown in Fig. 12.
It is preferred to provide one of the rods O, with an end cap, O³, to prevent
rotating the sprocket-wheels from off said rods.
The object sought and attained by the arrangement just described is, that the
outer head may be adjusted toward the other head to accommodate a small bundle
of signatures, without the insertion of intermediate boards or blocks.
The sprocket, T3, is provided with a crank, T', the rotation of which, through
the medium of chain W, sprockets T, sleeves t, flanges a engaging within the
grooves t2, will cause said sleeves and head to travel in either direction upon the
rods, O.
The means afforded for automatically stopping the movement of the head
according to a certain determined degree of pressure is another valuable feature of
our invention, as well as the feature of rotating the pressure-screw in opposite
directions from one and the same driving-pulley without changing the rotation of
the latter.
Still another great advantage which we attain by the use of the means herein
set forth for driving the movable head is that as the pressure increases the friction
decreases and the nearer the toggle-arms a b approach a longitudinal plane the less
power will be required to drive the travelling nut on the screw-rod and the greater
will be the pressure attained.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. A power-press having an outer head and a movable head, in combination with
suitable operative mechanism for operating said movable head and for automatically
stopping the movement of the latter in one direction at a determinate degree of
pressure thereon, for the purposes set forth.
2. In a power-press having an outer and a movable head, the screw-rod having
a nut adapted to travel thereon, and a toggle connection between said nut and
movable head, and suitable means for alternately imparting motion to said screw-
rod in opposite directions, in combination with connecting automatic mechanism
for stopping the rotation of said screw-rod at a determinate degree of pressure on
the movable head, for the purposes specified.
3. In a power-press, the screw-rod C, nut D, traveling thereon, toggle-arms a, b,
and d, movable head A, and the downward bifurcated extension D2, said toggle-
arms being pivotally connected to stationary parts of the press, nut, and movable
head, as set forth, the bifurcated portion D2 being connected to said nut and partially
encircling one of the stay-rods, and suitable means for operating said screw-rod,
for the purpose specified.
4. In a power-press having a movable head adapted to be operated by a toggle
connection between said head and a nut traveling on a screw-rod, as set forth, the
gears F, F, and F2, and suitable clutch mechanism for alternately imparting
motion to said gears and F, for the purposes specified.
5. In a power-press having a movable head adapted to be operated by screw-
rod, nut, and toggle connection, as set forth, the means herein set forth for operating
the clutch G, the same consisting of rod H, having an oblique elongated opening h¹
at its lower end portion, and arm g, connected to sliding rod g, said arm having
a projection entering said opening ', the lower bifurcated portion of said arm
partially encircling said clutch, said rod H having a set-collar R, for the purposes
set forth.
h
6. In a power-press having a movable head adapted to be operated by a toggle
connection, as set forth, the gears F, F', and F³, clutch G, split band J,
located within gear F2, said band having a lever M pivoted between the meeting
ends of said band, with a set-screw m in the outer free end of said lever, and
suitable means for operating and sliding said clutch, for the purposes set forth.

page_text: 7. In a power-press having a movable head adapted to be operated by a screw,
nut, and toggle connection, the gears F, F1, and F2, and clutch mechanism con-
nected to driving-shaft E, in combination with automatic mechanism for disengaging
said clutch from the gear at a determined degree of pressure on said movable head,
for the purposes specified.
8. In a power-press having a movable head adapted to be operated in substantially
the manner set forth, the means herein set forth for automatically stopping said
head at a given degree of pressure, consisting of the split band J, having a lever M
pivoted between its meeting ends, said band being located within a countersunk
portion of gear F' and having an annular recess around the inner face of hub K,
said gear having a pin n' projecting into said annular recess, the outer end of
lever M having a pin m² connected thereto, substantially as set forth, said
pin having a collar m³, with a spring or other elastic bearing resting on
said collars, in combination with clutch G, having a beveled tongue n³, as
specified.
9. In a power-press having a movable head operated substantially as set forth,
the means herein set forth for automatically stopping the head in its backward
movement, consisting of a set collar R, connected to the push and pull rod H, the
latter having the elongated opening and connecting mechanism with the clutch,
substantially as set forth.
10. In a power-press having a movable head, the driving-gears, and reversible-
clutch mechanism for imparting a reversible rotary motion to the screw-rod,
in combination with said screw-rod, traveling nut, and triple toggle connection
between said nut and the said movable head, for the purposes specified.
11. In a signature press, the head A mounted upon rods O and provided with
means for driving said head, in combination with the outer head A' mounted on
said rods, the latter being screw-threaded, sleeves t mounted on said rods, each
sleeve having a peripheral groove ², flange æ attached to the outer head and
engaging within said groove, and suitable means for rotating said sleeves.
12. The head A' mounted on the rods O, the latter being screw-threaded at
their outer end portion, in combination with sprocket wheels T, each having a
threaded sleeve t with a peripheral groove t2 therein, endless chain, W, engaging
said sprocket-wheels, flanges attached to the head and resting within the grooves t²,
and suitable means for rotating said sprocket-wheels.
Dated the 6th day of December 1894.
PHILIP M. JUSTICE,
Chartered Patent Agent,
For the Applicants.