IMPROVEMENTS RELATING TO PAPER-CUTTING MACHINES AND FRICTION CLUTCHES ADAPTED FOR OPERATING SUCH AND OTHER MACHINES WHICH HAVE TO BE WORKED INTERMITTENTLY
Year: 1878

page_text: LETTERS PATENT to William Lloyd Wise, of Chandos Chambers, Adelphi, in
the County of Middlesex, for the Invention of "IMPROVEMENTS RELATING TO
PAPER-CUTTING MACHINES AND FRICTION CLUTCHES ADAPTED FOR OPERATING
SUCH AND OTHER MACHINES WHICH HAVE TO BE WORKED INTERMITTENTLY."
A communication from abroad by George Rogers Clarke, of Brooklyn, King's
County, State of New York, United States of America.
Sealed the 13th June 1878, and dated the 5th February 1878.
PROVISIONAL SPECIFICATION filed by the said William Lloyd Wise at the
Office of the Commissioners of Patents on the 5th February 1878.
WILLIAM LLOYD WISE, of Chandos Chambers, Adelphi, in the County of Mid-
dlesex. "IMPROVEMENTS RELATING TO PAPER-CUTTING MACHINES AND FRICTION
CLUTCHES ADAPTED FOR OPERATING SUCH AND OTHER MACHINES WHICH HAVE TO
BE WORKED INTERMITTENTLY." (A communication from abroad by George Rogers
Clarke, of Brooklyn, King's County, State of New York, United States of
America.)
The nature of this Invention is described by my foreign correspondent as
follows "My improved machine is of that character in which the clamp which
holds the paper during the operation of cutting is brought down upon the paper by
the action of the mechanism, and in which the knife follows without any further
manipulation of the operator.
My improvements can be applied to power paper-cutting machines and to hand
paper-cutting machines.
On the main driving shaft of the machine, which is revolved by an automatic
friction clutch, is fixed a pinion which gears into a larger wheel mounted on a shaft
turning in a link which is loosely hung on the main shaft. A pinion on the shaft
mounted in the link engages with a large gear wheel turning loosely on the main
[Price 8d1

page_text: shaft. The latter gear wheel carries pivots engaging with two connecting links in
such manner as to operate two bell-crank levers, which are by links directly con-
nected to the clamp. When by this means the clamp is brought down upon the
paper, and the main shaft still continues to revolve in the same direction, the link
hung from the main shaft will be caused to rise. The motion of the knife is
derived from two levers, to the outer ends of which the knife frame is connected by
means of stout bars. The inner ends of the levers are geared together, and the end
of one lever is by a connecting rod hung on the link above referred to, which turns
loosely on the main shaft. It follows that when the clamp bears firmly upon the
paper, and the loose link on the main shaft begins to rise, it will elevate the inner
ends of the geared levers, and consequently depress the knife frame.
"
The main shaft carries on its front end a hand wheel, by which the shaft may be
revolved to depress the clamp sufficiently to shew to the operator where the knife
will strike the paper and effect the cutting.
I have devised a friction clutch to operate this and other machines. A drum
feathered to the main shaft is intermittently engaged with two pulleys turning in
opposite directions. Both faces of the hub of the drum have what are commonly
called claws, that is, inclined planes, similar to the surface of a screw propeller.
These claws engage with corresponding claws provided on two rings turning loosely
on the main shaft, but prevented from end movement. These rings carry a sliding
piece, which by moving the same in one direction or the other engages with either
of the pulleys, and causes the rings to revolve with the latter, or is set free from
both the pulleys. A piece pivotted to one arm of the drum, and extending through
a slot in the face of the latter, insures, by being struck at the proper time by a
suitable stop, the disengagement of the claws on the rings from the claws on the
drum.
When it is desired to start the machine for making a cut, the sliding piece is
moved through suitable connections by the hand of the operator to engage with one
of the pulleys. This motion will carry the clamp down, and effect the cut by the
subsequent downward motion of the knife. When the cutting is completed, suitably
arranged stops will throw the sliding piece in contact with the other pulley, and
thus reverse the machine. When both the knife and clamp are again in the proper
elevated position, another stop will disengage the sliding piece from either pulley,
and the swinging piece on the drum being struck by a suitable stop will set the
machine at rest.
I provide for a very delicate adjustment of the space in which the knife frame
slides. The rear face of the knife frame bears against the piece which holds the
clamp in position; whilst the front face bears against the surface of a horizontally
adjustable part of the framework. This latter part of the framework is held away
from the piece which guides the clamp by means of hollow bolts screwed into the
piece which guides the clamp. Through these hollow bolts pass solid bolts, the
heads of which bear against the fixed framework behind the piece which guides the
clamp, and the part which forms the bearing for the front face of the knife frame is
firmly pressed against the faces of the hollow bolts by nuts screwed to the ends of
the solid bolts.
I have also devised new means for operating the gauge which moves the paper
forward in the position desired for the cutting. On the under face of the table I
provide two racks, in which engage spring pawls turning on the lower face of the
gauge. These racks are alternately moved forward and backward by a T shaped
lever, and one of the spring pawls always engaging with the rack which is moving
forward pushes the gauge toward the operator. A lever extending up through a
slot in the gauge allows both of the spring pawls to be disengaged from their respec-
tive racks, and this being done, the gauge may be easily slid back by the operator
as far as desired.
I can apply these features of my Invention to power machines as well as to hand
machines.

page_text: It will be understood that the principle can be reversed, and the clamp brought
down first by the rising of the shaft turning in the link which is hung on the main
shaft; then the knife can be brought down by the turning of a gear wheel or
equivalent thereof on the main shaft."
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Lloyd Wise in the Great Seal Patent Office on the 2nd
August 1878.
WILLIAM LLOYD WISE, of Chandos Chambers, Adelphi, in the County of Mid-
dlesex. "IMPROVEMENTS RELATING TO PAPER-CUTTING MACHINES AND FRICTION
CLUTCHES ADAPTED FOR OPERATING SUCH AND OTHER MACHINES WHICH HAVE
TO BE WORKED INTERMITTENTLY." (A communication from abroad by George
Rogers Clarke, of. Brooklyn, King's County, State of New York, United States of
America.)
This Invention is described by my foreign correspondent as follows: -"My im-
proved machine is of that character in which the clamp which holds the paper
during the operation of cutting is brought down upon the paper by the action of
the mechanism, and in which the knife follows without any further manipulation of
the operator.
My improvements can be applied to power paper-cutting machines and to hand
paper-cutting machines.
On the main driving shaft of the machine, which is revolved by an automatic..
friction clutch, is fixed a pinion which gears into a larger wheel mounted on a
shaft turning in a link which is loosely hung on the main shaft. A pinion on the
shaft mounted in the link engages with a large gear wheel turning loosely on the
main shaft. The latter gear wheel carries pivots engaging with two connecting
links in such manner as to operate two bell-crank levers, which are by links directly
connected to the clamp. When by this means the clamp is. brought down upon the
paper, and the main shaft still continues to revolve in the same direction, the link
hung from the main shaft will be caused to rise. The motion of the knife is
derived from two levers, to the outer ends of which the knife frame is connected by
means of stout bars. The inner ends of the levers are geared together, and the end
of one lever is by a connecting rod hung on the link above referred to, which turns
loosely on the main shaft. It follows that when the clamp bears firmly upon the
paper, and the loose link on the main shaft begins to rise, it will elevate the inner
ends of the geared levers, and consequently depress the knife frame.
The main shaft carries on its front end a hand wheel, by which the shaft may be
revolved to depress the clamp sufficiently to shew the operator where the knife will
strike the paper and effect the cutting..
I have devised a friction clutch to operate this and other machines. A drum
feathered to the main shaft is intermittently engaged with two pullies turning in.
opposite directions. Both faces of the hub of the drum have what are commonly

page_text: called claws, that is, inclined planes similar to the surface of a screw propeller.
These claws engage with corresponding claws provided on two rings turning loosely
on the main shaft, but prevented from end movement. These rings carry a sliding
piece, which, by moving the same in one direction or the other, engages with either
of the pulleys, and causes the rings to revolve with the latter, or is set free from
both the pulleys. A piece pivotted to one arm of the drum, and extending through
a slot in the face of the latter, insures, by being struck at the proper time by a
suitable stop, the disengagement of the claws on the rings from the claws on the
drum.
When it is desired to start the machine for making a cut, the sliding piece is
moved through suitable connections by the hand of the operator to engage with one
of the pulleys. This motion will carry the clamp down and effect the cut by the
subsequent downward motion of the knife. When the cutting is completed, suitably
arranged stops will throw the sliding piece in contact with the other pulley, and
thus reverse the machine. When both the knife and clamp are again in the proper
elevated position, another stop will disengage the sliding piece from either pulley,
and the swinging piece on the drum being struck by a suitable stop will set the
machine at rest.
I provide for a very delicate adjustment of the space in which the knife frame
slides. The rear face of the knife frame bears against the piece which holds the
clamp in position, whilst the front face bears against the surface of a horizontally
adjustable part of the framework. This latter part of the framework is held away
from the piece which guides the clamp by means of hollow bolts screwed into the
piece which guides the clamp. Through these hollow bolts. pass solid bolts, the
heads of which bear against the fixed framework behind the piece which guides the
clamp, and the part which forms the bearing for the front face of the knife frame is
firmly pressed against the faces of the hollow bolts by nuts screwed to the ends of
the solid bolts.
I have also devised new means for operating the gauge which moves the paper
forward in the position desired for the cutting. On the under face of the table I
provide two racks, in which engage spring pawls turning on the lower face of the
gauge. These racks are moved forward and backward by a T shaped lever, and
one of the spring pawls always engaging with the rack which is moving forward,
pushes the gauge toward the operator. A lever extending up through a slot in the
gauge allows both of the spring pawls to be disengaged from the racks, and this
being done, the gauge may be easily slid back by the operator as far as desired.
I can apply these features of my Invention to power machines as well as to hand
machines.
It will be understood that the principle can be reversed, and the clamp brought
down first by the rising of the shaft hung in the link on the main shaft, then the
knife can be brought down by the turning of a gear wheel or equivalent thereof on
the main shaft.
The accompanying Drawings form a part of this Specification, and represent what
I consider the best means of carrying out the Invention.
In the representation of the power paper-cutting machine the moving parts are
shewn in separate Figures from those in which the fixed framework is shewn, in
order to give a clearer understanding of the operation of the machine.
In the representation of the hand paper-cutting machine I have only shewn the
moving parts, it being understood that the fixed framework may be of any suitable
description which will allow the proper working of the mechanism.
Fig. 1 is a front elevation of the moving parts of my power paper-cutting machine,
the clutch not being represented. Fig. 2 is a front elevation of the same, with the
clutch attached. Fig. 3 is a front elevation of the framework of the same.
Fig. 4 is a side elevation of the framework.
Fig. 5 is a section through the clutch on a larger scale.
Fig. 6 is a section on the line S, S, in Fig. 5.
Fig. 7 shows the adjustment of space for the knife frame on a larger scale.

page_text: Fig. 8 is a front elevation of the moving parts of my hand paper-cutting machine.
Fig. 9 is a side elevation of the same.
Fig. 10 represents a section through the table of a paper-cutting machine, with
my new mode of moving the gauge.
Fig. 11 is a bottom view shewing the same arrangement as represented in section
in Fig. 10.
Referring to Figs. 1 to 7 inclusive, A is the fixed framework, and B is the main
driving shaft. The front end of the driving shaft B turns in a sleeve A', but
projects a little beyond. The sleeve A' is firmly set in the fixed framework, and
forms a part thereof. A pinion b engages with a larger gear wheel c fixed to the
shaft c.
This shaft c turns in a bearing in the link D, which is loosely hung on the
sleeve A¹. A pinion c¹ fixed on the shaft c gears into a large gear wheel 61, which
latter turns loosely on the sleeve A¹, but is held against end motion. The gear
wheel b¹ carries in the position shewn two studs, from which links e' extend to one
pair of arms of bell-crank levers e. These bell-crank levers turn on the shafts E
mounted in the fixed framing, and the other pair of arms thereof is connected by
links e to the ends of the clamp bar F, as shewn. From a stud in the link D is
suspended a connection g', to the end of which is attached the lever g. There are
two of these levers g, which may be exactly alike, except that only one of them
is suspended on the link g'. These levers g turn on the shaft G, G, and are geared
together as represented. The outer ends of these levers carry suitable connection
rods g, which are connected to the ends of the knife frame H.
It will be understood that the necessary oblique descent of the knife frame may
be produced by any of the ordinary means. I have shewn a link h turning on a pin
in the fixed framework, and connected to the knife frame as shewn.
When the shaft B is revolved in one direction the pinion b will cause the gear
wheel c, and consequently its shaft C to revolve. The pinion on the shaft C will
turn the wheel b₁ on the sleeve A¹; this will by means of the connecting links e¹
impart a turning motion to the bell-crank levers e, which will cause the clamp to
descend upon the material to be cut. When the clamp bears upon the paper the
resistance of the material will necessarily prevent the wheel b' from turning further,
and if the revolution of the shaft B is continued in the same direction the gear
wheel c, and consequently its shaft C and pinion c¹, will rise on the pinion b and
gear wheel b¹, having at its centre of motion the shaft B, from which these parts
are suspended by means of the link D. When the shaft C, and necessarily the
link D, begin to rise, the connection g' will cause the inner geared ends of the
levers g to rise also, and consequently their outer ends moving downward and
connected to the knife frame will depress the latter and effect the cutting.
The pressure exerted by the clamp on the material to be cut can be regulated at
will by means of weights, not represented, attached to the inner ends of the levers g,
or other equivalent means, as springs, or the like.
When the cut is completed the machine will automatically reverse its motion by
a suitable shifting lever, to be described further on, operating upon the friction
clutch, and carrying both the knife frame and clamp bar into their original position
upon which the machine will automatically be set at rest.
It is desirable for good work that the operator shall be able to depress the clamp
to different positions by hand in order to shew where the knife will descend through
the paper. I effect this by the hand wheel T fixed on the shaft B in convenient
reach of the operator. By turning the hand wheel T the parts of the mechanism
will obviously be operated in exactly the same manner as if the shaft were driven
by a belt. The operator by turning the hand wheel T depresses the clamp to just
slightly touch the material to be cut, and then by operating the gauge he can move
forward the material to exactly the extent desired, so that the line on which the
cutting shall be effected will coincide with the front edge of the clamp. After the
material to be cut is thus brought in the proper position the operator engages
the clutch, which will cause the clamp to coinpress the material strongly and the
knife to make the cut.

page_text: I will now describe my improved clutch, which is represented in Figs. 2, 5, and 6.
The rear end of the shaft B carries two loose pulleys I and J, running continuously
in opposite directions. I prefer to make the pulley I which causes the shaft to
turn to effect the cutting larger than the pulley J, which reverses the motion, in
order to impart a slow and more powerful motion to the machine during that part
of its operation in which the work is being done, and a more rapid motion during
that part of the operation in which the mechanism is brought to its original
position.
Both the pulleys I and J have,conical recesses to receive between them a drum K.
Both faces of the hub of this drum K present inclined surfaces or claws to two
rings L1, L2, the inner sides of which have correspondingly inclined faces or claws.
These rings L1 and L2 are rigidly connected by bolts passing through the spaces
between the two arms of the drum K, as represented, so that both are obliged to
turn together in one direction or the other. The rings L', L2, turn loosely on the
shaft B, but are positively held against any end motion by means of rings firmly
attached to them engaging in grooves on the shaft B, as shewn. They are set
respectively between the drum and the large and small pulleys at such distance
apart that they allow of a limited end motion of the drum K, which is feathered to
the shaft B, but admits of its being moved endwise. A sliding piece 7 passes
through projections extending from the periphery of the rings L¹, L. The position
of this sliding piece is controlled by the engagement of the periphery of another
ring M in a notch in the piece l. The ring M¹ turns freely on the hub of the
ring L2, and is capable of limited end motion imparted to it by bolts m passing
through the spaces between the arms of the pulley I, and having their outer ends
firmly secured to the clutch ring M. The pulleys I and J are provided at the same
distance from their centre, in which the sliding piece is operated, with projections
i and j respectively.
•
When the operator by means of the lever N pulls the clutch ring M forward, the
loose ring M¹ will follow and throw the sliding piece in such position as to be
struck and carried along by the projection i on the pulley I.
This will cause the
rings L1, L2, to revolve in the same direction, and the inclined faces or claws on the
ring L¹ pressing against the corresponding claws of the drum K will force the latter
into the conical recess in the pulley I, and by the friction of the recessed pulley I
on the conical face of the drum K the latter, and consequently the shaft B, will
be revolved in the same direction as the pulley I. When by this motion both the
clamp bar and knife have made their descent, a stop n' on one of the levers 9 will
throw the lever N in such a direction as to push the clutch ring M backward far
enough to engage the sliding piece with the projection j on the pulley J. In this
position of the parts the rings L¹, L³, are compelled to reverse their motion, and
now the claws of the ring L2 will exert the necessary pressure to move the drum K
away from the pulley I and into the conical recess in the pulley J, whereby the
motion of the machine is necessarily reversed.
When the knife frame and clamp bar are returned to their elevated position,
another stop n² on the wheel b' throws the lever N into such position as will keep
the sliding piece 7 disengaged from either projection i or j.
When the lever N is brought into this position a stop N' attached thereto will
strike the piece k swinging on a pivot in one of the arms of the drum K and
extending through a slot in the surface of the latter. When the rings L³, L², and
consequently the drum K, continue their revolution the swinging piece k, its end
being struck by the stop N', will turn on its pivot, and the sliding piece 7 coming in
contact with it the rings L', L2, will be stopped, while the drum K is revolved a
little further, and thus the claws of the ring L² will be disengaged from the claws of
the drum K, while the claws of the ring L' become effective to force the drum K
out of contact with the pulley J, and the machine will consequently be stopped.
1
To steady the motion of the machine I propose to attach a fly wheel O on the
hub of the pulley I. It will be seen that the bolts m connecting the clutch ring M
and the ring M² pass through the spaces between the arms of this fly wheel.

page_text: It is very important to delicately adjust the space in which the knife frame is.
moved.
Referring to Figures 3, 4, and 7, A is the fixed framework. The clamp slides
between the face a of the fixed framework and the casting A2, and the knife frame
slides between the front face of the casting A2 and the piece A³. Into the casting A"
are screwed hollow bolts a¹, against the front faces of which bears the piece A³.
Solid bolts a² pass through the fixed framework A, the hollow bolts a', and the
piece A³. The hollow bolts a¹ are screwed into the piece A2 so far that the faces of
their heads are exactly at such a distance from the front face of the piece A² as is
required for an easy but steady motion of the knife bar. When this part is
adjusted with the required delicacy the nuts of the bolts a² are screwed up firmly
to press the piece A³ against the faces of the heads of the bolts a¹.
If any wear takes place in the running of the machine it is only necessary to
screw the hollow bolts a' a little further into the piece A2, and then screw up the
nuts on the bolts a².
In my hand paper-cutting machine, which is represented in Figs. 8 and 9, I have
reversed the principle. The downward motion of the clamp is effected by causing
the shaft turning in the link suspended from the main shaft to rise, and then the
knife is carried down by turning the parts on the main shaft.
I will indicate the pieces which correspond to parts of the power paper-cutting
machine by the same letters.
Referring to Figs. 8 and 9, B is the main shaft extending backward. at one side
of the machine, and D is a link hung loosely thereon, and carrying a shaft C. This
shaft carries a ratchet wheel c, with which engage spring pawls q fixed to a hand
lever Q. These spring pawls q are controlled by another lever turning on a pivot
in the hand lever Q, by means of which the position of the latter relatively to the
ratchet wheel may be adjusted as desired by the operator in each case.
A gear wheel or segment of gear wheel c¹ on the same shaft gears into a segment b
turning with the shaft B, and having an extension in the shape of a weighted arm b*,
as shewn. The link D is also extended beyond the shaft in the form of a bell-
crank lever, as indicated by b', one end of which carries a rod e² extending upward
and connecting to one end of the clamp bar. The other arm of the bell-crank
lever carries a rod e¹ connected to another bell-crank lever e turning on the
shaft E. The other arm of the bell-crank lever e is, by a link e², connected to the
further end of the clamp bar. From the segment b extends a connecting rod g² to
the lever h, turning on the fixed framework above the knife bar, and which is also
connected to the latter. When the operator desires to make a cut he turns the
lever to the left. The segment being heavily weighted this motion will first
cause the shaft C in the link D to rise, and the bell-crank lever b¹ which is firmly
attached thereto will turn down, and thus the clamp will be brought down to bear
upon the paper. The turning of the hand lever Q being continued, and the pressure
of the clamp upon the paper becoming so strong as to overcome the weight on the
segment b, the latter will turn on the shaft B, and through the connecting rod g²
depress the knife and effect the cutting.
In some cases it is desired to cut for a number of times a certain thickness of
paper. I have devised means to keep the clamp in an adjustable position for such
purposes. By the same means by which I effect this I can for every cut first depress the
clamp to just a sufficient extent to indicate the line in which the knife will penetrate
the material, and thus more delicately regulate the position of the material by the
subsequent operating of the gauge.
A bar T embraces in its slotted end' the shaft C. The other end of the lever is
notched, as represented, and engages with the stop a³ which forms a part of the
fixed framework not represented. A spring holds one of the notches in the bar T
firinly engaged with the stop a³. If the operator desires to hold the clamp at a
certain height for a cut he lifts, by means of the bar T, the shaft C, so that the
clamp will be carried down to the desired position, and engages one of the notches
in the bar T with the stop a³ on the fixed framework.

page_text: Referring to Figs. 10 and 11, A4 represents the table of a paper-cutting machine,
and P represents the gauge which forces the paper forward in position to be cut;
R, R, are two racks on the under face of the table, supported by bolts which pass
through slots in the racks R, R, as represented, and are screwed into the body of
the table. Spring pawls p, p, turning on the lower face of the gauge P engage
with the racks R, R. A lever P¹ extends upward in a slot in the gauge P. The
lower end of this lever is so shaped that by turning it in one direction it disengages
the spring pawls from the racks R, R, and sets the gauge at liberty to be moved
forward or backward by the hand of the operator. AT shaped lever U turns on
the lower face of the table. The two arms of this lever are secured to the racks
R, R. When the operator desires to move the clamp forward he rocks this lever U.
It will be easily understood that any movement of the lever draws one of the racks R
forward and pushes the other backward, and as the rack goes backward slides
idly past the pawl working against its notched face, while the other pawl is firmly
kept in engagement with the other rack. During the forward motion of the latter
any rocking of the lever U will cause the gauge P to move forward.
Many modifications may be made in the details without departing from the
principles of my Invention.
When the principle on which the double clutch described in this Specification is
constructed is applied to a single clutch it will be obvious that the swinging piece
moving one way strikes the pulley, and moving the other way strikes a stop fixed
on the framework. In such case the swinging piece k on the drum K will obviously
be omitted, as the further revolution of the rings L', L2, is arrested by the engage-
ment of the sliding piece with the fixed stop on the framework."
°
Having described the nature of the said Invention, and the manner of performing
it, as communicated to me as aforesaid, I hereby declare that what I claim as
secured to me under the Letters Patent herein-before in part recited is,-
1. A paper-cutting machine having the clamping bar depressed by the same
motion as the knife, and having the resistance of the paper to the clamping bar
and its connections serve as the fulcrum through which the force is transmitted to
the knife.
2. A paper-cutting machine having means to effect the clamping and cutting by
one and the same continuous motion, and having also additional means by which
the mechanism may be so operated as to depress the clamp to any desired.
position.
3. A friction clutch, in which the power of the belt is by suitable means con-
trolled by the operator or the machine, employed to throw the cone or drum into
or out of action.
And further I claim, with reference to Figs. 1 and 2,-
4. The link D carrying the shaft C with its gear wheels C, C', and operating the
knife through the link and levers g, by the climbing of the wheel c' upon the
wheel b', which latter operates the clamping bar..
5. The hand wheel T on the shaft B in combination with a pulley I, which latter
by engaging with a suitable clutch causes the shaft B to revolve, and with the gear
wheels b, c, b, c, through which motion is imparted to the clamping bar.
And with reference to Figs. 8 and 9,-
6. The link D, having an extension 6', which operates the clamping bar, and
carrying the shaft C with its gear wheel c', which by turning the shaft C first
climbs upon the segment b on the shaft B, and then turns the segment b down,
which latter operates the knife.
7. The lever Q carrying an additional lever, which latter controls the spring
pawls q, q, in combination with the ratchet wheel c, shaft C, link D, and gear
wheels or segments b', c', substantially as and for the purpose specified.
8. The slotted and notched bar T embracing the shaft C in combination with
shaft C, link D, segments b, c, and with a fixed stop a³, substantially as and for
the purposes herein specified.

page_text: And with reference to Figs. 3, 4, and 7,-
9. The means for adjusting the space for the knife frame, consisting of the
adjustable hollow bolts a' screwed into one piece, against which the knife frame
bears, and the solid bolts a² passing through the bolts a¹ and pressing the other
piece, against which the knife frame bears, firmly against the faces of the bolts u¹,
substantially as and for the purposes specified.
And with reference to Figs. 10 and 11,-
10. One or two racks R moved by a suitably shaped lever in combination with
one or more spring pawls p and the back gauge of a paper-cutting machine, sub-
stantially as and, for the purposes lierein specified.
11. The lever P¹, adapted to disengage the spring pawls p from the racks R and
to set the gauge at liberty, as herein specified.
And with reference to Figs. 1, 2, 5, and 6,-
-
12. A friction clutch having a drum K and one or two pulleys, and the rings
L1, L2, which are revolved by being engaged with one of the pulleys, and which,
by reason of their inclined faces or claws acting upon the claws on the drum,
throw the latter in one direction or the other, substantially as herein specified.
13. The sliding piece constantly engaged with the rings L1, L2, in combination
with said rings L, L2, drum K, and one or two pulleys I, J, having provisions i, j,
to cause the sliding piece to be engaged therewith.
14. The loose ring M', rigidly connected to the clutch ring M and controlling the
sliding piece 7, which passes through both the rings L', L2, and engages them with
one or the other of the pulleys (or with a fixed stop) in combination with one or
two driving pulleys and the drum K, as herein specified.
15. The lever N, controlling through suitable connections the sliding piece 1, in
combination with suitable stops provided on the mechanism of the machine, which
is worked by the clutch, so as to shift the drum K automatically.
16. The swinging piece k extending through a slot in the face of the drum. K, so
arranged as to disengage the drum K from the pulley on being struck and turned
toward the driving shaft by a suitable stop N¹ controlled by the operator or by the
machine.
In witness whereof, I, the said William Lloyd Wise, have hereunto set my
hand and seal, this Second day of August, in the year of our Lord One
thousand eight hundred and seventy-eight
W. LLOYD WISE. (L.S.)