Improvements in Machines for Scoring Cardboard.
Year: 1897

page_text: Date of Application, 19th Feb., 1897
Complete Specification Left, 15th Dec., 1897--Accepted, 5th Feb., 1898
PROVISIONAL SPECIFICATION.
Improvements in Machines for Scoring Cardboard.
I, CLARENCE WHITMAN HOBBS, of 15, Union Street, Worcester in the County of
Worcester and State of Massachusetts, United States of America, Manufacturer,
do hereby declare the nature of my invention for Improvements in Machines for
Scoring Cardboard to be as follows:-
My improvements relate to that class of machine for scoring cardboard which
comprise two distinct sets of scoring mechanisms each consisting of a table, over
which the sheet of cardboard is fed to the revolving cutters, and rolls over which
the cardboard passes and against which the cutters act and a series of revolving
cutters which score the upper side of the cardboard; the axes of each set of revolving.
cutters being placed at right angles to each other so that when the cardboard is passed
through the two sets of scoring mechanisms its upper surface will be scored in lines
corresponding to the position of the revolving cuiters, with the scored lines made
by the second set of cutters at right angles to those made by the first set
of cutters and my invention relates particularly to the
automatically feeding the sheet of cardboard after it has passed from the first to
the second set of cutters so that when the cardboard has been fed beneath the first
set of revolving cutters and delivered to the second table in a proper position in
front of the second set of cutters the feeding mechanism connected with the second
table will be automatically set in motion to feed the cardboard toward the second set
of cutters without requiring the attention of the operator.
mechanism for
The
My invention consists in a pushing plate adapted to press against the edge of the
sheet of cardboard farthest from the second set of cutters and capable of a reciprocating
motion during which it pushes the cardboard forward between the cutters.
reciprocating pushing plate is normally disconnected from the driving power but is
connected therewith by means of a clutching mechanism whenever a sheet of card-
board is advanced into proper position upon the second table and in front of the
pushing plate. The connection of the pushing plate with the driving power by
means of the clutching mechanism is automatically accomplished by the movement of
the sheet of cardboard by means of the following mechanism. Immediately behind
the first set of revolving cutters is journalled a power driven roll with its upper side
in the plane of the second table. Directly above this roll is journalled a tripping
wheel with its periphery out of contact with the roll and carrying on its side a crank
pin connected by a link with a bell crank lever pivoted upon a bracket at the opposite
side of the second table. The bell crank is capable of a limited oscillating motion and
is normally held at one end of its movement by means of a spiral spring connecting
one of its arms with the fixed frame-work of the machine. The tripping wheel, when
not in action, is therefore held in a fixed position by means of its link connection
with the bell crank lever.
The tripping wheel carries a radially sliding pin projecting a slight distance beyond the
periphery of the tripping wheel and forced outwardly by means of a spiral spring.
The radially sliding pin is so, located in.the tripping wheel that it will be engaged by
the upper surface of the cardboard as it passes forward between the tripping wheel

page_text: and roll, causing the tripping wheel to be oscillated by the forward movement of the
cardboard and rocking the bell crank lever against the tension of a spring connected
with one of its arms. When the sheet of cardboard has entirely, passed between the
roll and tripping wheel the radially sliding pin carried by the tripping wheel becomes
released from its engagement with the sheet of cardboard and the spring connected
with the bell crank lever will instantly reverse the bell crank lever and connected
tripping wheel and bring the radially sliding pin into position to be engaged by the
next succeeding sheet of cardboard. The bell crank lever when its motion is reversed by
the action of the spiral spring operates to release a latch which is pivoted upon the
side of the machine and engages a clutching mechanism in order to hold it out of
action. The releasing of the latch permits a spring to throw the clutching
mechanism into action and operatively connect the reciprocating pushing plate with
the driving power..
The clutching mechanism makes one complete movement when it is again
automatically engaged by the latch and held out of action; thereby causing the
reciprocating plate to make one complete revolution forward and back to carry..the
sheet of cardboard beneath the second. set. of revolving, cutters,, and, then come to a
state of rest in proper position to allow the next.succeeding sheet of cardboard to, be
delivered in front of it.
1.1
'
A
COMPLETE SPECIFICATION.
Improvements in Machines for Scoring Cardboard.
"I, CLARENCE WHITMAN' HOBBS, of 15, Union Street, Worcester, in the County of
Worcester, State of Massachusetts, United States of America, and also of 37, Feather-
stone Street, Finsbury, in the City of London, Manufacturer of Paper Box 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:-
t
My improvements relate to that class of machines employed for scoring cardboard,
used in manufacturing cardboard or strawboard boxes, which comprise two distinct
-sets of scoring mechanisms, arranged at right angles to each other. Each set consists
of a table, (or a portion of one used in common for both sets of mechanisms), over
which the several sheets of cardboard are fed; a set of revolving cutters, each capable
of adjustment to suit the dimensions or lines to be scored placed above and adapted
: to score the upper side of the cardboard sheets as they pass beneath; and one or more
rotatable rolls over which the cardboard passes and so arranged that each set of
: cutters is situated above the axial line of a roll and presses upon the cardboard as it
passes beneath the revolving cutters. After a sheet of cardboard, hast passed through
the first set or scoring mechanism, it is fed at right angles to its former line of travel
by my improved automatic feeding mechanism to the second set or scoring mechanism,
there to be also, scored at right angles to the-lines made by the first set.
1.
In 'the further description of this invention, reference is made to the accompanying
drawings, in which Fig. 1 is a plan of a machine embodying my invention; Fig. 2 is
an end elevation of the same taken from the feeding position; Fig. 3. is a sectional
elevation taken on the line zz, in Fig. 1, on an enlarged scale, which shows, the
scoring and feeding mechanism; Fig. 4 is a sectional elevation of the bearings of
Fig: 3 on the line of Fig. 1, on the same scale as Fig. 1; Fig. 5 is a sectional
elevation along the line a-x of Fig. 1 which shows part of the automatici feeding

page_text: mechanism to the second set of scoring mechanisms; Fig. 6 is a diagram indicating
the arrangement of gearing on the line win Fig. 1; Fig. 7 is a sectional elevation
across the second or right angled feed table on the line v-v, showing part of the
automatic feed mechanisan on an enlarged scale; Fig. 8 is a diagramatic elevation of
the gearing and bearings on the line u-u; Fig. 9 is a detail section on an
enlarged scale of part of the feeding device upon the line of Fig. 5; Fig. 10 is a
side elevation of the clutch mechanism with the gear wheel on the right hand of
Fig. 7 removed; Fig. 11 is a partial plan of the same, and Fig. 12 is a sectional
elevation of Fig. 11 upon the line 8-8 in the latter figure!
In these drawings, A is the first table, (or part thereof if one table is used in
common for both scoring mechanisms), at which the several sheets of cardboard are
fed to the first set of revolving scoring cutters a, and B is the second table (or part
of a common table, as aforesaid) placed in a proper position in front of a second and
similar set of revolving scoring cutters, arranged at right angles to the scoring
cutters a. A feeding mechanism on the second table. B is automatically set in
motion to feed the cardboard sheets which have passed under the scoring cutters a
toward the second set of scoring cutters, the said feeding mechanism requiring no
attention on the part of the operator.
.
The automatic, feeding mechanism consists of a pushing plate b, made to recipro-
cate on the table B, by sliding along a groove c, formed in the said table; as indicated
in Figs. 1, 5, 7 and 9; so as to push or feed the cardboard forward to the second set of
cutters. The reciprocating pushing plate b is normally disconnected from the
driving power, but by an intermittent connection therewith through a clutching
mechanism d, (Figs. 7, 10, 11 and 12), whenever a sheet of cardboard is advanced to
the proper position on the second table B, in front of the pushing plate b, the latter
is pressed against that edge of the sheet of cardboard farthest from the second set of
cutters and pushes it forward for the scoring cutters to act upon it.
}
1
The connection of the pushing plate b with the driving power, by means of the
clutching nechanism dy will be described in connection with the first set of revolving
scoring cutters, as shown in Fig: 3. In this figure, a is one of any required number
of similar circular cutters, each pivoted-in-a suitable holder, and made adjustable for
depth by a set screw e, as shown. Each cutter holder is mounted upon a transverse
bar f, which extends across the table A from frame to frame, in which it is hung in
bearings (as indicated by the dotted circle in Fig. 3) so that the bar, with its attached
scoring cutters, can be turned in an upward direction. The bar is shown in the
position for scoring, in Fig. 2, with the dovetailed slide on which the cutter holders
are mounted (Fig. 3) arranged parallel with the table A, and also with the upper
surface of a power driven roll g; the axis of which is placed immediately beneath the
scoring cutters a. The holders, with their respective scoring cutters, are adjustable
to any required position across the transverse bar f, and they are secured in position
by the set screw h, Fig. 2. To facilitate, however, the setting of the scoring cutters
in their required position along the transverse barf, the latter is turned up by means
of a handle, on the right hand side of the table A, Figs. 1 and 2, and the cutters
made to slide along against the edge of a rule or scale j, carried above the bar f, (as
partly shown in elevation 'Fig. 2), until they range with the required dimension lines
for scoring, when being set in their respective positions by the set screw h, the bar
is turned down again to the position shown-in Fig. 2, ready to begin work.
The cardboard sheets are fed upon the table A against a guide k, capable of adjust-
ment along a groove in the table as shown in plan Fig. 1, and pass beneath the
apron to the revolving cutters a by which each sheet is scored. The movement of
the roll g carries the sheets forward to a stripper m, over which they pass to the
roll n, (Fig. 3), which is driven by gearing from the roll g; as indicated; in the
diagram. Fig. 6. The upper side of the roll n is either on the same plane as
the second table B, or else the latter is a little below the former, as shown in Fig. 3.
Directly above the roll n is situated a tripping wheel o working upon a shaft p
having journals arranged in bearings, as indicated in Fig. 4. The diameter: of. the
tripping wheel o. is such that its periphery does not quite come in contact with that

page_text: of the roll n, so as to allow the cardboard sheets to pass freely between the two. The
tripping wheel carries a radially sliding pin forced outwardly by a spiral spring, as
shown in Fig. 3, the pin bearing upon the surface of the roll until pushed forward
by each advancing sheet of cardboard, and then engaging in contact with the upper
surface of the cardboard. When the sheet of cardboard has entirely passed between
the roll n and the tripping wheel o, the radial, pin is released from the cardboard,
and by means of a spring and connections, described below, the radial pin and
tripping wheel are returned quickly into the position shown in the figure to be engaged
by the next succeeding sheet of cardboard.
The tripping wheel o carries on its side face a crank pin arranged to work a link or
connecting rod q attached at its other end to a bell crank r, pivoted upon a bracket
A limited motion is given to
or support at the opposite side of the second table B.
the bell crank r, by means of the tripping wheel and radial pin contact with each
sheet as above described, and when the tripping wheel is not in action it is held at one
end of its range of motion by a spring s (referred to above) connecting one of its arms
to the frame of the machine, or an equivalent device. As explained above, the radial
pin is pushed forward by each advancing sheet of cardboard, thus carrying around the
crank pin and acting upon the bell crank r against the action of the spring 8, but
immediately after each sheet of cardboard has passed the radial pin the spring s
comes into play with a quick tripping action which reciprocates the pushing plate
through the clutching mechanism d..
When the motion of the bell crank lever r is reversed by the action of the spring s
as aforesaid, it operates to release a latch or detent t, pivoted on the machine, by a
block u on the connection between the bell crank and the spring 8, which otherwise
engages a loose outside collar of the clutching mechanism to hold it out of action by
The release of the latch
a projection engaging with the latch t, as shown in Fig. 10.
permits a spring shown in Fig. 12 to throw the clutching mechanism d into action
through its shaft d¹, crank and connecting rod d², thus operatively connecting the
reciprocating pushing plate b with the driving power, as shown in Figs. 5, 7 and 10.
The clutching mechanism d, with its connected crank and rod d², and pushing
plate b, makes one complete movement, when it is again automatically engaged by
the latch t, and held out of action. Consequently, the reciprocating pushing plate b,
moving forward to push a sheet of cardboard forward to the second set of revolving
cutters immediately after it is disengaged from the radial pin of the tripping wheel o,
returns to a state of rest in proper position to allow the next succeeding sheet of
cardboard to be delivered in front of it.
The second set of scoring mechanism is a counterpart of the first set, as shown in
Fig. 3 with the exception of the tripping wheel o, and roll n, and need not, therefore,
be further described. .
The clutching mechanism & consists of a toothed shaped cam mounted upon and
secured to a shaft d', and actuated by the driving mechanism, as shown by
Figs. 1, 7 and 10. Within the teeth of the cam a series of rollers is arranged and
adapted to move outwards, in an expanding manner (as indicated by Fig. 10) to
engage with the bore of a gear wheel at the end of the shaft d¹, mounted loosely
upon the cam, and to carry it with it when actuated by the bell crank in one direction,
but moveable inwards to release the gear wheel, when actuated in the opposite
direction. A spring held locking plate or latch t, and a projection on the side of
the cam, (Fig. 12), prevents the latter making more than one revolution, in doing
which, and by the intervention of a crank and connecting rod d², Figs. 5 and 7, the
reciprocating guide plate b is acted upon to feed the straw.board at right angles to its
first motion, as aforesaid..
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 1
"claim is
1. In a machine for scoring cardboard, the combination of a table A, with a first
C
sering mechanism-a-nushing

page_text: plate with means for reciprocating the same upon the table B, and a tripping wheel
connected to and operating a clutch mechanism to automatically feed a sheet of
cardboard to the second set of scoring mechanism after it has passed from the first
set, substantially as and for the purpose herein described.
2. In a machine for scoring cardboard, the combination of a first and second set of
scoring mechanisms with a pushing plate, and automatic means for actuating the said
plate to feed a sheet of cardboard to the second set of scoring mechanism
immediately after it has passed from the first, substantially as and for the purpose
herein described.
17
3. In a machine for scoring cardboard, the combination of two sets of scoring
mechanisms with automatic means for feeding a sheet of cardboard to the second set
after it has been scored by and has passed the first set of scoring mechanisms,
substantially as and for the purpose herein described.
4. In a machine for scoring cardboard, the combination of two sets of scoring
mechanisms placed at right angles to each other, a feed table or tables such as
A and B adapted for feeding a sheet of cardboard successively to the first and
second sets of the said scoring mechanisms, a tripping device placed immediately
behind the first set of scoring mechanisms, and a feeding device to the second
set of scoring mechanism automatically operated by the tripping device on parting
contact with the rear end of a sheet of cardboard, whereby the latter is scored
on two sides of a right angle, substantially as and for the purpose herein
described.
5. In a machine for scoring cardboard, the combination of two sets of scoring
mechanisms with a feeding device to the second set of scoring mechanism,
consisting of a table and a pushing plate reciprocating thereon, a driving
shaft d, crank and connecting rod d², a clutching mechanism such as d, means
for operating the said driving shaft, and means for automatically connecting and
disconnecting the said clutching mechanism, substantially as and for the purpose
herein described and shown by the drawings.
G. A machine for scoring cardboard in two directions at right angles to each
other, whereby the second scoring operation is automatically perforined in the
manner herein described and shown by the drawings.
Dated this 15th day of December 1807
FAIRFAX & WETTER,
37 & 39, Essex Street, Strand, London, Agents for the Applicant.