Improvements in Grain-binders for Harvesters.
Year: 1897

page_text: PROVIDIUNAD DI BUITIVATION.
Improvements in Grain-binders for Harvesters.
I, GEORGE GATTON MELHUISH HARDINGHAM, of 191, Fleet Street, in the City
of London, Civil Engineer and Chartered Patent Agent, do hereby declare the
nature of this invention (a communication from Henry E. Pridmore, of Laundale,
in the City of Chicago, County of Cook and State of Illinois, one of the United
States of America, Mechanical Engineer), to be as follows:-
This invention relates to apparatus for binding grain, and consists in certain
improvements in the construction and operation of such mechanism with the
objects of simplifying the same, rendering the apparatus more available for use,
and more tidy and symmetrical in appearance. A grain-binder designed to
accomplish these objects is of the following construction:-
The binding attachment upon which the present improvements are placed is
of the usual form and attached to the delivery end of the harvester in such a
manner that the grain which is discharged from the elevators falls upon the deck
within reach of the packers which alternate in their reciprocations through the
deck, bringing the grain into the bundle receptacle of the machine. In the hori-
zontal member of the C shaped binder-frame is mounted a shaft, called the
knotter-shaft, which, at the end of an arm, supports and gives motion to the
knotting mechanism of the binder. Any well known form of knotter is applicable
to this construction. The knotter-shaft also carries the ejector arms which rotate
with the shaft and serve to eject the bundle after the latter has been formed and
bound. In the upright member of the Cshaped binder-frame is arranged another
shaft having mounted loosely thereon at its lower end a bevel pinion, and at its
upper end a bevel pinion formed with two rows of teeth which mesh with a bevel
wheel keyed on the knotter-shaft; the latter bevel wheel being furnished with
two segments of gear teeth, whereof the inner segment meshes with the inner row
of teeth on the bevel pinion carried by the vertical shaft, while the outer segment
meshes with the outer row of teeth on the said bevel pinion.
Motion transmitted to the upright shaft is thus transmitted to the knotter-shaft
so that the speed of the shaft is increased while the inner segment is in mesh, and
decreased while the outer segment is in mesh; but the leverage exerted upon the
devices on the shaft and the connections from the bevel wheel is affected inversely;
that is, the inner segment gives a greater speed but the smaller leverage, and the
outer segment the slower speed but the greater leverage.
The devices which automatically regulate the size of the bundle, and which
break the continuous movement of the parts and act in opposition to the needle
as a compressor to compress the bundle, will now be described. The loosely
mounted bevel wheel at the lower end of the upright shaft meshes with a bevel
wheel fixed to the constantly rotating packer-shaft. This wheel has a flange the
inner periphery of which is notched. On the upright shaft is keyed a hub to which
is pivoted a trip dog pressed into the path of the notches in the bevel wheel by
means of a spring. So long as this dog is not acted upon it remains as a coupling

page_text: connection, thus imparting a constant motion to the parts of the binder beyond.
The problem now is to so act upon this dog as to unclutch it when necessary, and
allow it to become clutched when sufficient grain has accumulated to form a bundle.
This is accomplished in the following manner. In the path of the stream of grain,
in about the same vertical plane as the needle, is situated the trip and compressor
finger, same being mounted on a shaft arranged practically parallel with the lower
member of the binder-frame, on which it is supported, and extending along said
member to the end of the binder. On this end of the shaft is keyed a trip stop
which is formed with an elongated opening or slot and controlled by means of
a spring link pivoted on a stud arranged on the upright member of the binder-
frame. In the lower end of this spring link is mounted a friction roller which
works in the elongated slot in the trip stop; the object of this roller being to
reduce friction as the spring link is vibrated on its pivot by means
of a cam track on the segmental bevel wheel. On the upper end
of the spring link is another roller which travels in this cam track
and reduces the friction that would follow were the contact a sliding one. On
rotation of the segmental bevel wheel the spring link is caused to swing on its
pivot thus moving the lower end of the link through the slot in the trip stop. The
trip stop is located and vibrated in a vertical plane in such relation to the trip
dog that, when thrown down by the vibration of the spring link, the trip stop falls
in the path of the trip dog, thereby forcing the latter inwardly against its spring
and away from the ratchets in the bevel wheel at the lower end of the upright
shaft the machine being thus unclutched from its power. A shoulder on the
trip stop forms a stop against which a projection on the trip dog strikes in the
rotation of the parts. By these means the dog is unclutched, and the parts are
locked and prevented from further rotation.
The machine may thus be clutched and unclutched, but the method of doing
this, and the connections for performing the operation, so that they shall at the
same time actuate these parts and perform the further office of compressing the
bundle, is also novel in this device and is a part of the present improvement.
Heretofore, it has-been found necessary to use separate springs of different degrees
of tension, one to give way before the force of the oncoming stream of grain and
operate the clutch devices, and the other a stronger spring to hold the trip and
compressing finger in the path of the stream of grain after it has yielded for clutch-
ing and against the force of the uprising needle, so that the bundle may be forcibly
compressed. According to this invention, one of these springs is dispensed with,
and the spring which is retained is utilized to do the double work of, first, a light
spring to give way for the tripping, and, secondly, on being thrown into a new
position with an increased leverage against the on-coming stream of grain, to act
as a compressor spring. This result has been accomplished by placing in the
spring link a helical spring, one end of which is adjustably connected by means
of a screw with the link while the other end rests upon and is supported by a
sliding block. A rod which passes axially through the spring holds the latter
in position, the lower end of the said rod passing freely through the sliding block.
The movement of this sliding block is regulated by the spindle of the roller
pertaining to the trip stop; the spindle passing through the block and into a slot
in the link.
When the parts are in their normal position, pressure exerted upon the trip
finger will tend to lift the sliding block on the spring link and compress the spring.
The spring will thus hold the trip stop with some force in the path of the trip
dog, and the members remain unclutched. The action of the spring link in this
position is close to the pivot of the trip and compressor shaft, and the force of the
stream of grain on the trip finger thus has a greater leverage wherewith to over-
come the strength of the spring. When, however, the needle is raised, the cam
wheel throws the lower end of the spring link further from the pivot of the trip-
shaft along the slot of the trip stop and the spring has thus more leverage to
withstand the force applied to the trip and compressing finger. One spring thus

page_text: performs the double office, because in its different positions it has an increased
or diminished leverage upon the parts. When, however, the needle has encircled
the gavel and the bundle is bound, the cam track on the segmental bevel wheel
is given a rapid deflection, and the force of the bundle throws the trip and com-
pressor finger out of the path of discharge.
Attention is particularly called to the fact that the force of the compacted grain
upon the trip finger is resisted by the stud or pivot of the spring link on the
binder-frame. This is an exceedingly useful result. So far as the applicant is
aware, it has been the custom to resist the force of the compressor finger almost
wholly upon the cam track, thus causing great friction and an unusual wear of
the parts. A line drawn through the centres of the rollers upon the extremities
of the spring link should show that the stud, upon which the link is pivoted is
located but a short distance from this line and that therefore a great part of the
strain of the operation is thrown upon that stud. The roller on the spring link,
within the path of the cam track of the segmental bevel wheel, controls the spring
link and, at the time of the greatest compression, the roller on the spring link is
thrown into the extremity of the slot in the trip stop and thus resists the force
so that it is largely thrown upon the stud.
The grain delivered from elevators of the harvester falls upon the deck of
the binder within reach of the packers, which, in their reciprocations, take it wisp
by wisp and forward it into the binding chamber, the outlet of which is stopped
by the trip finger; the deck forming the lower wall, and the knotter and its
attached parts forming the upper wall. The grain is filled into this receptacle
until a sufficient quantity has accumulated and until it has become sufficiently
packed so that the force of the packer will be transmitted through it to the trip
finger, the latter yielding against the force of the spring in the extensible link
or lever and lifting the trip stop, whereupon the trip dog enters a ratchet in the
lower bevel wheel on the upright shaft and clutches the binding, tying and dis-
charging devices to the power. The trip stop is controlled by means of the cam
track and extensible link or lever, so that it does not enter the path of the dog
until the bundle has been bound and discharged and the needle returned to the
normal position; at which instant it strikes within the path of the trip dog and
forces it out of engagement with the ratchet. The parts then come to rest, the
grain is forwarded into the receptacle by the packers and the operation is repeated
as often as the accumulated grain is of such resistance as to effect the transmission
of the motion of the packer to the clutch mechanism.
The trip finger performs the double office of a trip and a compressor in the above
construction. It is evident however that the binder could be unclutched and the
tripping mechanism controlled by other well known means thus leaving the finger,
its shaft and the slotted arm, with the extensible link and the cam which vibrates
it to perform the office of a compressor and to positively get the compressor out of
the way when the bundle is being discharged and back again ready for the next
bundle. The combining of the offices of trip and compressor, however, greatly
simplifies the binder; cheapening its construction and making it more readily
available for use on the farm.
In the description of the device so far given the upright shaft has been specified
as being mounted in the upright member of the binder-frame. It is apparent
that it could be mounted in bearings connected to this upright member and still
be so situated as to render possible the arrangement of the tripping device and the
combination of the trip and compressing devices into one member; their action
as above described being preserved.
100%

page_text: I, GEORGE GATTON MELIUISH HARDINGHAM, of 191, Fleet Street, in the City
of London, Civil Engineer and Chartered Patent Agent, do hereby declare the
nature of this invention (a communication from Henry E. Pridmore, of Laundale,
in the City of Chicago, County of Cook and State of Illinois, one of the United
States of America, Mechanical Engineer), and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to apparatus for binding grain, and consists in certain
improvements in the construction and operation of such mechanism, whereby it
is rendered simpler more available for use, and more tidy and symmetrical in
appearance.
A grain-binder designed to accomplish these objects is illustrated in the accom-
panying drawings. Fig. 1 is an elevation of the discharge side of the grain-binder,
same being detached from the harvester to which it is connected in the usual
imanner as will be readily understood for receiving grain. Fig. 2 is an elevation
of the gear end, the deck upon which the grain is to be received from the harvester
being shown in broken lines. Fig. 3 is a section on line 3-3 in Fig. 1, the binder
frame being removed, the needle and trip finger being shown in broken lines, they
being in front of the plane of the drawing, and a new position of the parts is shown
in dotted lines. Fig. 4 is a detached view of the spring link showing its pivot to
the frame of the binder and its connection to the trip, also the action of the cam
upon it. Fig. 5 is a section on the line 5-5 of Fig. 4. Fig. 6 is a horizontal
section on the line 6-6 of Fig. 2, showing the clutch, the trip stop which is above
this line being included in the view. Fig. 7 is a vertical section on the line 7-7
of Fig. 6, the upright shaft and the trip dog being in section. Fig. 8 is a view
partly in section of one of the binder sills, showing the bearing therein for the
transverse shaft. Similar letters refer to similar parts throughout the several
views.
The binding attachment upon which the present improvements are placed is
the usual form, and attached to the delivery end of the harvester in such a
manner that the grain which is discharged from the elevators falls upon the deck A,
shown in dotted lines in Fig. 3 within reach of the packers B, which alternate in
their reciprocations through the deck A, bringing the grain into the bundle recep-
tacle of the machine. In the horizontal member C, of the C-shaped binder-frame
is mounted a shaft C, termed the knotter-shaft, which, at the end of an arm,
supports and gives motion to the knotting mechanism D, of the binder. Any well
known form of knotter is applicable to this construction. The knotter-shaft C,
carries arms C2, which rotate with the shaft and serve to eject the bundle after the
latter has been formed and bound. In the upright member E of the C-shaped
binder-frame is arranged another shaft E', whereof the lower end is provided with
a loosely mounted bevel pinion E², and the upper end with a bevel pinion E³,
formed with two rows of teeth e, e¹, respectively meshing with the toothed
segments c, c¹ of a bevel wheel c³, keyed on the knotter-shaft C'.
Motion transmitted to the upright shaft E' is thus transmitted to the knotter-
shaft C', so that the speed of the shaft is increased while the inner segment c is in
mesh, and decreased while the outer segment c¹ is in mesh; but the leverage
exerted upon the devices on the shaft and the connections from the bevel wheel
is affected inversely; that is, the inner segment gives a greater speed with a smaller
leverage, and the outer segment a slower speed with a greater leverage.
The devices which automatically regulate the size of the bundle, break the con-

page_text: tinuous movement of the parts and act in opposition to the needle as a compresser
to compress the bundle, will now be described. The bevel wheel E, at the lower
end of the shaft E¹ meshes with a bevel wheel I', fixed to the constantly rotating
packer-shaft I. This wheel E2 has a flange e, the inner periphery of which is
notched as shown in Fig. 6. On the upright shaft E' is keyed a hub J, to which
is pivoted a trip dog J¹ maintained in the path of the notches in the bevel wheel E
by means of a spring, as shown partly in dotted lines in Fig. 6. So long as this
dog is not acted upon, it remains as a coupling connection, thus imparting a
constant motion to the parts of the binder beyond. The problem now is to so act
upon this dog as to unclutch it when necessary, and allow it to become clutched
when sufficient grain has accumulated to form a bundle. This is accomplished
in the following manner. In the path of the stream of grain, in approximately
the same vertical plane as the needle F, is the trip and compressor finger K, same
being mounted on a shaft K¹ arranged practically parallel with the lower member
of the binder-frame, on which it is supported, and extending along said member
to the end of the binder. On this end of the shaft is keyed a trip stop K2, formed
with an elongated opening or slot, and controlled by means of a spring link L,
pivoted on a stud carried by the upright member E of the binder-frame. In the
lower end of this spring link L is mounted a roller 1, which works in the slot ¹
in the trip-stop K2; the object being to reduce friction during the swinging of the
spring link L, on its pivot l, effected by the cam track 12 on the segmental bevel
wheel C. On the upper end of the link L, is another roller which travels in
this cam track and reduces the friction that would follow were the contact a sliding
one. On reference to Fig. 4 it will be readily perceived that the rotation of the
segmental bevel wheel, C, causes the spring link L, to swing on its pivot l, thus
moving the lower end of the link through the slot k¹ in the trip-stop K². The
trip-stop K2 is located and vibrated in a vertical plane in such relation to the
trip-dog J, that when thrown down by the vibration of the spring link L, the trip
stop falls in the path of the trip-dog, thereby forcing the latter inwardly against
its spring and away from the ratchets in the bevel wheel E2; the machine being
thus unclutched from its power. A shoulder k, on the trip-stop K², forms a stop
against which a projection j, on the trip-dog J¹ strikes in the rotation of the parts;
the dog being thereby unclutched, and the parts locked and prevented from
further rotation.
The machine may thus be clutched and unclutched, but the method of doing
this, and the connections for performing the operation, so that they shall at the
same time actuate these parts and perform the further office of compressing the
bundle, is also novel in this device and is a part of the present improvement.
Heretofore, it has been found necessary to use separate springs of different degrees
of tension, one to give way before the force of the oncoming stream of grain and
operate the clutch devices, and the other, a stronger spring, to hold the trip and
compressing finger in the path of the stream of grain after it has yielded for
clutching and against the force of the uprising needle, so that the bundle may be
forcibly compressed. According to the present invention, one of these springs is
dispensed with, and the spring which is retained is utilized to do the double work
of, first, a light spring to give way for the tripping, and, secondly, on being thrown
into a new position, with an increased leverage against the oncoming stream of
grain, to act as a compresser spring. This result has been accomplished by placing
in the spring link L, a helical spring M, one end of which is adjustably connected
by means of a screw m with the link, while the other end rests upon, and is sup-
ported by, a sliding block M. A rod m¹, which passes axially through the spring,
holds the latter in position, the lower end of the said rod passing freely through
the sliding block M. The movement of this sliding block M is regulated by the
spindle of the roller pertaining to the trip-stop m² the spindle passing through
the block and entering a slot in the link L.
When the parts are in their normal position, as shown in Fig. 2, pressure exerted
upon the trip finger will tend to lift the sliding block M' on the spring link L and

page_text: compress the spring M. The spring will thus hold, with some force, the trip-
stop K in the path of the trip-dog J₁; the members remaining unclutched. The
action of the spring link L being close to the pivot of the trip and compresser
shaft, the force of the stream of grain on the trip-finger K has a greater leverage
wherewith to overcome the strength of the spring. When, however, the needle F',
is raised, the cam wheel C³, throws the lower end of the spring link L, further
from the pivot of the trip-shaft along the slot of the trip-stop k², and the spring
has thus more leverage to withstand the force applied to the trip and compressing
finger K. One spring thus performs the double office, because in its different
positions it has an increased or diminished leverage upon the parts. When,
however, the needle F', has encircled the gavel and the bundle is bound, the cam
track 12, on the segmental bevel wheel C³, is given a rapid deflection, and the
force of the bundle throws the trip and compresser finger K out of the path of
discharge; the parts assuming the position shown in Fig. 4.
Attention is particularly called to the fact that the force of the compressed grain
upon the trip finger K is resisted by the stud or pivot of the spring link L, on
the binder-frame. This is an exceedingly useful result, and, so far as the present
applicant is aware, it has been the custom to resist the force of the compressor
finger almost wholly upon the cam track, thus causing great friction and an
unusual wear of the parts. Upon a line being drawn through the centres of the
rollers upon the extreinities of the spring link L it will be seen that the stud 1, upon
which the link is pivoted, is located but a short distance from this line, a great part
of the strain of the operation being in consequence thrown upon that stud. The
roller on the spring link within the path of the cam track (2 of the segmental
bevel wheel C controls the spring link L, and, at the time of the greatest compres-
sion it will be seen that the roller l, on the spring link L, is thrown into the
extremity of the slot in the trip-stop K³, and thus resists the force with the result
that it is largely thrown upon the stud l.
The grain delivered from the elevators of the harvester falls upon the deck A
of the binder within reach of the packers B, which, in their reciprocations, take it
wisp by wisp and forward it into the binding chamber whereof the outlet is stopped
by the trip-finger K; the deck A forming the lower wall, while the knotter D and
its attached parts form the upper wall. The grain is filled into this receptacle
until a sufficient quantity has accumulated and become sufficiently packed to
ensure the force of the packer being transmitted through it to the trip-finger K,
the latter yielding against the force of the spring M in the extensible link or
lever L, and lifting the trip-stop K; whereupon the trip-dog J¹ enters a ratchet
in the lower bevel wheel E2 of the upright shaft and clutches the binding, tying
and discharging devices to the power. The trip-stop K2 is so controlled by means
of the cam track and the extensible link or lever L, that it is prevented entering
the path of the dog J until the bundle has been bound and discharged and the
needle returned to its normal position, at which instant it strikes within the path
of the trip-dog J and forces it out of engagement with the ratchet on the bevel
wheel E. The parts then come to rest, the grain is forwarded into the receptacle
by the packers and the operation is repeated as often as the accumulated grain
attains the degree of resistance requisite to operate the packer and clutch the
mechanism.
The trip finger K performs the double office of a trip and a compresser in the
construction described and illustrated. It is evident however that the binder could
be unclutched and the tripping mechanism controlled by other well known means,
thus leaving the finger K, its shaft and the slotted arm K³ with the extensible
link and the cam which vibrates it to perform the office of a compresser and to
positively get the compresser out of the way when the bundle is being discharged
and back again ready for the next bundle. The combining the offices of trip and
compresser, however, greatly simplifies the binder; cheapening its construction
and making it more readily available for use on the farm.
In the herein described device, the upright shaft E¹ has been specified as being

page_text: mounted in the upright member E of the binder-frame, but it will be apparent
that it may be mounted in bearings connected to this upright member and still
be so situated as to render possible the arrangement of the tripping device and
the combination of the trip and compressing devices into one member; while
preserving the above described mode of working.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I claim :-
-
1. In a grain-binder, in combination with a constantly rotating packer-shaft,
a bevel gear fixed to this shaft, an upright shaft, a bevel gear loosely mounted
on the upright shaft and meshing with the gear on the packer-shaft, a ratchet
loosely mounted on the upright shaft and connected to the bevel gear on the upright
shaft, a trip-dog pivoted to the upright shaft and actuated by a spring away from
the centre of the shaft and located in the same plane as the ratchet, a trip-stop,
and means for controlling the stop so that in its normal position it is within the
path of the trip-dog, substantially as and for the purpose specified.
2. In a grain-binder, the combination of the constantly driven packer-shaft,
the intermittently driven knotter and discharge shaft, a train of gearing in which
a clutch is arranged, connecting the constantly driven packer-shaft with the inter-
mittently driven knotter and discharge shaft, one member of this train consisting
of a segmental bevel wheel having two sets of teeth, disposed at different radii
from the centre of such wheel and with which sets of teeth meshes a bevel pinion
also provided with a double set of teeth, and automatic means for controlling the
clutch, substantially as and for the purpose specified.
3. in a grain-binder, the combination of a trip finger and rock shaft, a trip-stop
rigid with the rock shaft, an extensible lever pivoted to the binder-frame, one arm
of which is connected to the rock shaft while the other arm is extended into the
path of a cam which vibrates the lever during the operation of binding a bundle,
substantially as and for the purpose specified.
4. In a grain-binder, the combination of a trip finger and rock shaft, a trip-stop
keyed to the rock shaft, which stop has an elongated slot, an extensible lever
pivoted to the binder-frame one end of which has a bearing in the elongated slot
in the trip-stop while the other extends into the path of a cam on the knotter shaft
substantially as set forth.
5. In a grain-binder, the combination of a trip-finger and its shaft, a trip-stop
keyed on the shaft, mechanism controlling the trip-stop, whereby it is caused to
vibrate in a plane at right-angles to the path of movement of the trip-dog, a trip-
dog, a ratchet in which the trip-dog engages, a shoulder on the trip-stop and a
shoulder on the trip-dog which form a lock against further rotation of the
unclutched parts of the machine substantially as set forth.
6. In a grain-binder, the combination of a trip-finger and its shaft, a trip-stop
keyed to the trip-shaft, an extensible lever pivoted to the machine and acting upon
the trip-stop practically in a line with the stress thrown upon the trip-stop by the
incoming grain acting upon the trip-finger and its shaft, means, on the machine,
for shifting the position of the extensible lever further from the centre of the
trip-stop, whereby the leverage is increased during the binding operation, and to
throw it toward the centre of the trip-stop for effecting the discharge of the bundle,
substantially as and for the purpose specified.
7. In a grain-binder the combination with the trip-finger, of a spring acting upon
the trip-finger with a yielding force and at such a short leverage as to be readily
overcome by the stress of the incoming grain, and means to change the leverage
on the spring upon the trip-finger so that its action shall be more advantageous
during the time of the compressing of the bundle.
8. The combination with a trip and compresser finger of an automatic binder,
of a spring acting upon the trip and compresser finger with a yielding force and
with a slight leverage during the accumulation of the bundle, and means whereby

page_text: the position of the spring is changed during the compression of the bundle to a
point where its leverage is increased.
9. In an automatic binder, the combination of a trip-finger and its shaft, an
extensible lever in which a spring is situated pivoted to the frame of the machine
practically in a line with the force that is transmitted to the extensible lever from
the trip-shaft, a sliding connection between the extensible lever and the trip-shaft
with means whereby the extensible lever is rocked on its pivot.
10. In a grain-binder the combination with a compresser finger and its shaft, of
an arm fixed on the compresser shaft, an extensible lever pivoted to the machine,
one end of which is connected with the arm fixed to the compresser shaft by a
sliding connection while the other end is extended into the path of a cam, the
extensible lever being formed of a sliding member against which the spring
presses, and means for adjusting the tension of the spring.
11. In a grain-binder, the combination of a trip and compresser finger closing
the exit from the binder, a trip-stop rigidly connected with the trip and compresser
finger shaft, a spring acting upon the trip-stop to hold it within the path of a
trip-dog, and automatic means for changing the force of the spring upon the trip
and compresser finger during the operation of tying and discharging the bundle.
12. In combination with a grain-binder, a compresser and its shaft, an arm
keyed to the shaft, its position while the bundle is being formed and tied being
practically at right-angles to the upright member of the binder frame, an exten-
sible lever pivoted to the binder-frame practically parallel with its upright
member, the lower end of the extensible fever having a sliding connection with
the arm connected to the compresser shaft, the upper arm of the extensible lever
being continued into the path of a cam, whereby the strain brought upon the
compresser finger during the time of forming and binding a bundle is largely
transmitted to the pivot of the extensible lever on the binder-frame.
13. In a grain-binder, the combination of a trip-finger and its shaft, a trip-arm
keyed to the trip-shaft and vibrating in a plane at right-angles to the path of the
trip-dog, a ratchet in which the trip-dog engages, a spring that actuates the
trip-dog in a plane at right-angles to the path of movement of the trip-arm, and
means for vibrating the trip-arm, substantially as and for the purpose described.
14. In an automatic grain-binder the combination of a trip and compresser
finger closing the discharge side of the binder, a shaft upon which this trip and
compresser finger is mounted, an arm keyed to the trip and compresser finger
shaft, an elongated slot in said arm, an extensible lever pivoted to the binder-
frame one arm of which slides in the elongated slot and the other arm of which
extends into the path of a cam, the elongated slot in the arm keyed to the trip
and compresser shaft having its elongation extending in both directions from the
position of the elongated lever while the binder is receiving a bundle, whereby
the movement of the cam upon the extensible lever will vibrate the end in the
elongated slot in one direction to increase the leverage of the extensible lever upon
the trip and compresser and in the other direction to drop the trip and compresser
finger from its position while the bundle is being discharged.
Dated this 31st day of January 1898.
G. G. M. HARDINGHAM.