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Патент USA US2111115

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March l5, 1938.
2,111,115
H. J. GIBBS ET Al.WIRE TYING MACHINE
Filed Aug. 11, 193e
’
5 Sheets-Sheet l
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@j THOMAS A, BmeHAM
,BY
W. BINGHAM
` D‘AvJD
"
ATTORNEY
arch 15, 1938'.
H. J. GIBBS ET A».
'2,111,115
WIRE TYING MACHINE
Filed Aug. ll, 1936
5 Sheets-Sheet 2
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96
@i HAROLD J. Glßßs
THOMAS A." BINGHAM
D'Avm W. BWGHAM
BY
ATTORI/viv
March l5, 1938.
H. J. Glass ET A1.
ZÄMÄÜ
WIRE TYING MACHINE
FiledAug. 11, 1936
5 Sheets-Sheet 3,y
A
’r
‘NVENTORS
HAROLD J.. GIBBS
THOMAS A. BINGHAM
DAVID W. BINGHAM
Bq M@ @Mob ATToR/yrfy
Emi-1938.
l
`
'
H. .1 Glass Er AL
WIRE
TYING
>
MACHINE
Filed Aug. 11, 1936
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l
5 sheets-Sheet 4
MENTORS
HAROLD J. 6:31155l
THOMAS A. BINGHAM
DAVIUW. BINGHAM
'Bv M
Arran/wy' ^
March l5, 1938.
H. J. GIBBS ET AL
2,111,115
WIRE TYING MACHINE
Filed Aug. ll, 1936
5 Sheets-Sheet 5
Il
ìNVENTORS
HAROLD J. GIBBS
THOMAS A. BWGHAM
DAVID \/\/. BINGHAM'
2,111,115
Patented Mar. 15, 1938
UNITED STATES PATENT OFFICE
2,111,115
WIRE TYING MAoiuNE
Harold John Gibbs, Thomas Alexander Bingham,
and David William Bingham, Melbourne, Aus
tralia, assignors to Gerrard Wire Tying Ma
chines Company Proprietary Limited, West
Melbourne, Australia
Application August 11, 1936, Serial No. 95,448
In Australia August 16, 1935
.
Y
v
26 Claims.
(Cl. 140-93)
’ This invention relates to wire tying machines
fected by positively actuated means devoid of
of» the kind wherein wire led round a case or the
springs or other extraneous members liable to
like to be bound is tensioned and the overlapped
ends or portions of the wire are secured together
si. by twisting one around the other.
breakage or disorder; to provide power operating
. The general object of the invention is to pro-
vide a wire tying machine adapted for, and
equipped with hand ‘or power operating mecha
nism whereby Wire binding operations may be
performed eiiìciently and rapidly with a minimum
of manual attention, the various functions of
the machine being carried out automatically in
proper sequence, thus permitting a high rate of
output.
More specific objects of the invention are:
to provide a power operated wire tying machine
adapted to be brought into action by a clutch
device which is readily operable manually by an
operator incidental to his placing wire in opera
20 tive position through the machine and around
mechanism from which driving energy is sup
plied tothe machine and also to means synchro Ul'
nized with the operation of the machine so as
to 'eli‘ect relative movement between the case or
the like and the machine at the completion of
binding operations to thereby facilitate delivery
or replacement of the case or the like; to provide
counterbalanced supporting means for the ma
chine, case moving means and power operating
mechanism whereby the machine is rendered
more convenient in operation and control and
is capable of giving a relatively high rate of
output.
'
The foregoing and various other objects and
features of the invention and the advantages
arising therefrom will however be more readily
appreciated from the following description of one 20
a case or the like; to provide a wire tying ma
practical embodiment, it being understood that
chine in which relatively small and detachable
parts such as springs, pawls, latches and the like
various modifications, additions and/or reñne
ments may be incorporated without departing
are eliminated or reduced to a minimum; to pro
vide a wire tying machine in which the functions
of tensioning, twisting and cutting the wire are
from the spirit and scope of the invention as
brought about by and during continuous turn
ing of a main shaft in one direction, and pref
erably during one complete revolution of the
shaft, until the parts arrive in positions ready
to repeat the cycle of operations; to provide im
proved wire tension means in which the wire is
sub-jected to equal amounts of tension at oppo
site sides of the twisting means and in which
the tension action is purely linear or straight
line and is effected by a force whichis constant
and uniform for the entire tensioning action; to
provide ample compensation for the tension
means in order to avoid overstrain and fracture
40 of the wire by spring means of such form and
dimensions as will effectively withstand stresses
and fatigue due to constant use and in which
the stresses are evenly distributed throughout
the spring means; to provide means by which
the amount or degree of tension may be inñ
nitely varied by a simple adjusting operation; to
provide a wire tying machine capable of ready
adjustment to give variation in the number of
twists imparted to the wire to provide a ma
50 chine which ensures that the portions of the wires
extending between the opposite twist portions
will lie iiat in side by side attitude upon the
case or -box being bound; to pro-vide a machine
in which cutting of the wire takes place after
55 completion of the twisting operation and is ef
deñned by the appended claims.
25
Referring to the drawings which form part
of this specification:
Figure 1 is a side elevation showing a power
operated machine with supporting means and
case ejecting mechanism according to the in 30
vention.
Figure 2 is a plan of Figure 1 in which certain
parts are broken away for convenience of illus
tration.
Figure 3 is a front view of the machine on a
larger scale.
Figure 4 is a plan of the machine.
Figure 5 is an elevation of the main shaft with
associated parts in section.
Figure 6 is a cross section on an enlarged scale
on line VI-VI of Figure 5.
Figure 7 is a right hand end View of the ma
chine.
'
Figure 8 is a left hand end view of the ma
chine.
Figures 9, l0 and ll are side views of the twist
ing means and cam devices associated therewith
and illustrating the “overthrow” and automatic
return action of the twisting means.
Figure 12 isla front elevation of a power grip 50
per.
Figure 13 is a plan of Figure 12.
Figure 14 is a cross section of line XIV-XIV of
Figure 13.
Figures 15 and 16 are developed views of the
2
2,111,115
left and right hand cams, respectively, of the
main shaft.
Figure 17 is a front view of the twisting means,
with a bearing cap removed.
Figure 18 is a section on line XVIII-XVIII of
throughout the springs. Consequently by making
the springs of adequate dimensions, for example,
gripper.
Figure 23 is a cross section on line A--A Fig~
ure 4.
Figure 24 is a cross section on line B-B Fig
ure 4.
Figure 25 is a cross section on line C-C Fig
ure 4.
A machine in accordance with the invention
has a suitable base plate 2 capable of resting
upon a case or other object to be bound. Bearing
brackets 3 with detachable caps 4 may upstand
from the base at appropriate positions adjacent
35
40
45
tension operation will be distributed uniformly
Figure 19 is an end View of the left hand cutter
and actuating means.
Figure 20 is a fragmentary left hand end view
showing clutch operating means for connecting a
lay shaft to a power operated shaft and means
Figure 22 is a perspective view of the left hand
30
wire which avoids excessive tension eifort being
applied to the wire. It will be evident that any
stresses imposed upon these springs during the
Figure 1'7 including the bearing cap.
for suddenly arresting rotation of the main shaft
of the machine.
Figure 21 is an elevation of the lay shaft with
15 associated parts in section.
20
pensating action during the tensioning of the
to the front edge of the base to support a shaft ß,
hereinafter referred to as the main shaft, from
a single revolution of which all essential func
tions, i. e., tensioning, twisting and cutting of the
wire, are derived.
Left hand and right hand wire gripping de
vices indicated generally by the numerals 'l and
ii are provided one at each side of the twisting
device, and these two grippers are adapted to be
moved away from each other with a straight line
motion to tension the wire. For this purpose the
grippers may be mounted upon slides 3, i l , guid
ed by pairs of guide rods l2, I3 aiiixed to the base
2. The tension slides are provided with rollers
I4 for (2o-operating with two cam members i6,
il, on the main shaft by which the gripper car
rying slides are moved in unison to tension the
wire.
Each said cam member is preferably in the
nature of a cylindrical collar connected to the
shaft by splines i8 enabling the collar to move
axially along the shaft. Each collar is provided
around its periphery with a channel or cam track
of about one and a half to two inches in diameter,
and of appropriate cross section and length, they
will effectively withstand repeated use and re 10
main free of fatigue. Inñnitely variable ad
justment of the amount of tension may be ob
tained by adjusting the nuts 28.
The right hand gripping device is preferably
so arranged as to grip the Wire with power de 15
rived from operation of the associated tension
cam ll. For this purpose the track engaging
roller lé for cam il, as best seen in Figures 12,
13, and 14 may be mounted about a stem 3l up
standing from one end of a gripper lever 32 in 20
termediately pivoted, as by pin 33, to tension
sli-de li and having at its front end a gripper
3ft disposed adjacent an anvil 3G which may be
formed by a replaceable member detachably se
cured to a lug :il` at the front of the slide Il. 25
Pivotal movement of lever 32 and gripper 34 may
be limited by flanges 3S upstanding from the slide
at the sides of the lever. With such an arrange
ment it will be seen that there may be a certain
degree of lag in the outward movement of slide 30
El relative to its cam IT such lag being taken
up by swinging movement of the gripper lever
32 in a direction to swing the gripper 311 to the
left so that it more tightly grips the wire. This
grip is so efficient that it may not be necessary 35
for the 4gripper to be serrated, or if serrated, the
serrations need only be of comparatively slight
depth and devoid of sharp edges. The co-acting
face of anvil 35 may if desired be similarly ser
rated.
40
Such gripping means will not deform, bend or
bite into the wire which is important for the
reason that the gripped portion will after com
pleting of the cycle of operations form part of
the twisted portion in the next cycle of operations 45
and, being unweakened, will effectively stand the
tensioning and twisting operations.
The left hand gripping device may be similar
to to the right hand device but as the portion
of the wire held by the left hand device is dis 50
carded after cutting it is not so important. Thus
a simpler gripping device as seen in Figure 22
the sides of which are engaged by the roller on
the respective slide. The track T of each cam
member is endless and as best seen in Figures l5
55 and 16 has commencing from the neutral point N
a spiral portion I9 which produces outward move
may be employed at the left hand side of the
machine. This device comprises a jaw 3l fixed
between lugs 3S outstanding from slide 9 and dis- .
ment of the respective slide, and which merges
at one end into a purely circumferential portion
2l which holds the respective slide in its outward
60 position while the tensioned wire is being twisted,
39 may have a groove 4l in its face 42 which is
curved so that when the leading end of the wire
has been inserted between the jaws and is then
posed opposite an eccentrically pivoted jaw 39
also disposed between lugs 38. The pivoted jaw
and a return portion 22 which may curve or ex
bent or curved to the right along the groove 4I
tend spirally to neutral point N so as to cause the
respective slide to return to its inward position
the pivoted jaw will effectively grip the wire
against the stationary jaw. The adjacent faces
after completion of the twisting action. Such re
of the two jaws may be serrated to assist the
65 turn action may be assisted if so desired by spring
means (not shown).
Each cam or collar I3, il may have an axial
recess 23 extending for a suitable distance from
its inner end to accommodate a coiled spring 24
70 which encircles the main shaft 6 between a face
or shoulder 26 terminating said recess and an ad
justable enlargement 2l' such as a washer or disc
backed by a nut 28 engaging a screw threaded
portion 2S of the main shaft. The two springs
75 associated with the cam members provide a com
gripping action.
65
The twisting means may comprise a slotted
twister pinion 46 or known or suitable form pro
-vided with hollow outstanding trunnions 4"! (see
Figures 17 and 18) fitting in slotted sleeves 48
partly accommodated in recesses 49 in the front 70
of the base 2 and retained in position by projec
tions 50 of a bearing cap 5l attached to bearing
brackets 3.
A segmental driving gear 52 on the main shaft
6 meshes under certain conditions with a smaller 75
3
2,111,115
'completely toothed- gear 53 una ylay spindle 54> tion that itsslot is aligned with the wireway of
the machine. After this reverse movement of
the lay spindle and twister pinion has been com
which also carries another completely toothed
and larger gear 56 meshing with the twister
pleted, the second cam 59 and associated parts
are again locked in position by the col-operation
of the major semi-circular face 58e of the ñrst
pinion. rI‘he lay spindle 54 may be journalled in
erl bearing sleeves 5l partially accommodated by
recesses in bearing brackets 3 and by the bearing
cam and the concave face 59h of the second face,
cap 5l. v The segmental driving gear 52 may have
a cam V5i! at one side which co-operates with a
cam 59 on lay spindle 54 in such manner-'that
until vsuch time as the major `semi-circular face
58o' recedes from the concave face 59h as pre
viously described.
the latter and consequently the twister‘pinion
are prevented from rotation at all periods other
than when twisting is taking place, the segmental
gear during such periods passing idly by its' as
sociated driven gear 53. After completing the
15 required number of twistsv the twister pinionis
further revolved through a ksn'iall arc, still being
driven by the gears.- Then the camsf58§ 59, cause
the twister pinion. to turn in reversethrough a
appropriate number ofv teeth, such change being
the only one necessary to adapt the machine for
three, four or more twists.
Cutting devices, one at the outer side of each
wire receiving jaw 6l, may be brought into oper
ation automatically after completion of the twist
ing operation. ~These cutters are preferably de 20
void of springs and arranged to be positively
corresponding »arc so that the slot of the pinion
20 is aligned with the wire-way o-f the machine.
This “overthrow” of the twister pinion and auto
operated, both on their active and return move
matic reverse movement ensures thatthe over
ments, from the main shaft 6. For this purpose
the main shaft may have two cutter cams, reach
advantageously in the form of a collar 63 with
lapped untwisted portionsY of the. wire will lie
flat in side by side> formation upon the box or
case when the machine is freed from the tied wire
binding.
30
Y
v
a cam track 63a in a side face for accommodat
»
ing a roller 64 on a pin 66 projecting fro-m a plate
61 pivoted about a pin' 69 to the base of the ma
chine, the plate carrying a cutter blade 69 lo
Various cam arrangements ~may be adopted
to produce the before mentioned actions. Ac
cording to the illustrated form (see Figures 9, 10,'
and 11) the segmental gear 52 is toothed vfor about
cated-adjacent the respective wire receiving jaw. 30'
By arranging for the cutters to come into opera
one half .of its periphery and the cam. 58` vof
this gear has a semi-circular face .58ay concen
tion after the completion of the twisting action,
instead of during the operation, it is'ensured
tric and coterminous with the toothed portionof
the main gear. This semi-circular face may
merge at one end by an approximately tangential
face 58h into an end of a larger diameter,.and-
slightly less than semi-circular face 53C which
is joined at its other end to the face 58a by a
short somewhat radial face'58d. The other -cam
40 59 has a face 59a which is circular with the ex
ception of a concave chordal portion 59h, the
curvature of which conforms to the curvature of
the larger diameter semi-circular face 58o of
cam
53.
'
‘
-.
.
At the commencement of each cycle oi' opera
tions', the untoothed portion .of the segmental
gear is> adjacent the associated gear 53 while'the
concave chordal face 5927 ofthe second cam is in
engagement with the major semi-circular face
. 58e of the ñrst cam as in Figure 9 whereby the
second cam and lay spindle 54 are prevented
from rotation without however impeding rota
tion of the ñrst cam. During this stage the `wire
is being tensioned and the twister pinion 46 is
of course idle.
As the .tension action isv com
pleted the segmental gear` commences to mesh
with gear 53 while the smaller semi-circular
face 58a of the ñrst cam 58 comes opposite
the concave -face 59h of the second cam
60 59, as in Figure 10 thus freeing the second
cam, the lay spindle 54 and the twister Apin
ion for rotation. The overlapped wires-which
pass through slotted wire receiving jawsV 6l at
opposite sides of thetwisting device, are thus
65 twisted together by the positive 4drive from the
main shaft through the gear train 52,53, 56 to
the twister pinion which continues until the
toothed portion of the segmental gear recedes
from gear 53. As this commences to take place,
70 the substantially tangential vface 58h of the first
cam engages the concave face 59h of the second
cam and causes the latter and consequently the
lay spindle and twister pinion to be turned slight’
ly in the reverse direction; as in FigureV 11 thus
returning'the twister pinion 46 into such a posi
'
The number of twists effected by the twister
pinion may be readily varied by selection of a
segmental gear`52 and driven gear 53 having an
that the torsional stresses are prevented from
being concentrated at the outer ends of the two
twisted portions and, owing to the distribution
of such stresses, the wire is not weakened at
any one point. Furthermore, the cut ends of the
wire will not project outwardly but will lie snug
ly against o-r contiguous with the adjacent por 40
tions of the wire and also lie flat upon the top
of the box.
The main shaft 6 may be adapted for manual
operation or may be driven from any suitable
source of power. In a preferred arrangement it 45
receives _ its drive from an electric motor ll
through the medium of variable reduction gear
ing, located in casing l2, a constantly rotated
shaft i3 and a clutch device 14 winch is adapted
to be thrown in by the operator, and to be auto 50
matically thrown out as the shaft 6 completes
each revolution.
The main shaft 6 may therefore be provided
at its right hand end with a freely mounted spul`
gear 16 meshing with a companion gear 'il rotat 55
able about a lay shaft 'i8 and fast with a bevel
wheel 19 which meshes with a bevel pinion 8| con
nected to the constantly rotated power driven
shaft 13 which extends rearwardly of the ma
chine. The lay shaft ‘i8 extends parallel with 60
and tothe rear of the main shaft and is sup
ported by bearings 82 upstanding from base 2
and provided with detachable caps 83.
According to one form, the clutch device 'i4
comprises a key member 85 (Figs. 5 and 6) adapt
ed to be projected by a Vspring 85 through a radial
slot 8l in the main shaft into any one of a num.
ber of recesses 88 formed in the interior of the
freely mounted spur gear '56. A lever 99 may be
pivoted to lugs 9| outstanding from a bearing 70
bracket 92 supporting the power operated shaft
'i3 and may be acted upon by a spring plunger
93 tending to maintain the lever in normal posi
tion. A forked end of lever 89 may be connected
Y to asleeve 94 which is slidable lengthwise on the
75
4
2,111,115
main shaft and has an internal spiral cam face provided to cushion downward swinging of the
96 adapted to co-operate with the aforesaid key
rear part of the see-saw frame.
member 84.
The clutch 14 is thrown into operation man
ually by suitable means .conveniently located at
To permit of rapid and easy separation of the
machine from the driving motor, the power
driven shaft 13 may have squared end portions
the front of the machine and which may com
prise a, horizontal rocker spindle 91 journalled
and a collar |26 of a spring loaded clutch |21
in bearings 98 carried by certain of the bearing
caps 4 and 83 and provided at each end with
10 upstanding arms 99 bridged by a horizontaloper
ating bar or rod |0|. At its right hand end the
rocket spindle carries a cam member |02 having
a cam face |03 aligned with a roller |04 disposed
between a forked projection |06 of lever 89.
15 Upon the operator pushing the bar |0| down
wardly and rearwardly (against the influence of
a spring pressed plunger |00 acting against a
projection 99a of one of the arms 99 as in Fig
ure 25) the cam face |03 causes lever 89 to turn
about its pivot so that sleeve 94 by its movement
along the main shaft enables key 84 to be spring
projected to the key engaged in the first recess
88 of the freely mounted gear 16 which comes
opposite to the key, whereby the main shaft 6
25 becomes coupled to the power driven shaft 13.
Soon after the main shaft 6 commences to rotate
the wide part of the sleeve cam face 96 comes
opposite the head of the key member 84 so that
the sleeve 94 due to spring plunger 93 and lever
30 89 moves lengthwise on the shaft over the key
84 whereby the latter is gradually depressed by
the spiral cam face 96 with the result that the
main shaft after making one complete revolution
is disconnected from the power driven shaft.
35
If desired, the sleeve 94 may have a second
cam face |01 co-operating with a projection |08
on the main shaft 6 to prevent the lever 09 from
being held by an operator in such a position as
would prevent the automatic tripping of the
40 clutch at the completion of a single revolution
of the main shaft.
The machine, the power driving mechanism,
and means for effecting relative movement be
tween the machine and a. case at the completion
45 of a binding operation, are preferably mounted
upon a tiltable or see-saw frame o-r support so
that the machine normally assumes a position
with its base 2 slightly clear of the case. This
facilitates positioning of cases or the like beneath
50 the machine preparatory to wire binding opera
tions, the normal operations of placing wire
around the case and through the machine and
the subsequent tensioning of the wire causing the
machine to rest securely upon the upper face of
55 the case.
For this purpose, a pair of bars || | (Figures 1
and 2) may be secured at their front ends to the
machine base and at their rear ends to a plate
| | 2 upon which the electric motor 1| l and reduc
60 tion gearing are mounted. Intermediately of
their length the frame bars may have bearings
H3 for an axle ||4 supported by a head piece
||0 vertically adjustable upon a pillar or stand
H1.
This stand, which is shown as comprising
65 a T-section bar, may have a toothed rack || 8
engaged by a worm pinion ||9 supported in the
head piece | I6 and operable by the cranked end
|20 of spindle |2I.
The see-saw frame may be counterbalanced as
70 by a spring |22 connected at its upper end to
plate ||2 and at its lower end to a bar |23 de
pending from the head piece. A buffer device,
comprising for example a spring |24 supported
beneath the rear end of plate ||2 from a rear
‘ ward projection ||6a of head piece IIB, may be
13a respectively fitting into the bevel pinion 8|
that connects shaft 13 to the power driving unit.
Relative movement between the machine and
a bound case at the completion of a binding 10
operation is preferably effected by case pushing
mechanism actuated by lay shaft 18, which is
brought into action automatically as the main
shaft 6 of the machine completes each revolution.
Accordingly the left hand end of the main shaft 15
6 may have a cam like striker |28 adapted as the
main shaft is nearing the end of each revolution
to engage a roller |29 supported from a spindle
|3| adapted to slide lengthwise in bearings |32,
whereby the spindle is moved to the left against 20
the influence of spring |33. At its other end the
spindle may be connected by lever |34 (Fig. 23)
to a sleeve |35 of a clutch device |36 adapted to
couple the power driven gear 11 to the lay shaft
18 and to automatically trip itself as the lay shaft 25
completes a revolution. Clutch device | 36 may
be identical in all material respects with clutch
device 14 previously referred to and illustrated in
Figs. 5 and 6 and wherein sleeve 94 is the counter
part> of sleeve |35 of the lay shaft clutch device. 30
In order to ensure that clutch 141s tripped be
fore clutch |36 connects the lay shaft 18 to the
power driven shaft 13, and also to definitely arrest
rotation of main shaft 6 with the slot of the
twister pinion correctly aligned with the wireway 35
of the machine, the main shaft is shown at its
left hand end' with a disc |31 with a peripheral
hump |38 disposed in the path of a roller |39
(Figs. 8 and 20) on the free vend of an arm |40
pivoted to the base 2 and urged towards the disc 40
|31 by a spring pressed plunger |4|. The rela
tively steep end of hump |38 comes adjacent roll
er |39 just before main shaft 6 completes each
revolution, whereby the ñnal stage of rotation of
shaft 6 is effected or assisted by the spring pressed
arm |40, and the roller immediately snaps home
behind the st_eep part of the hump |38 into a de
pression |42 of disc |31 so as to' prevent any back
lash or inadvertent turning of shaft 6.
The lay shaft may have a disc |43 with eccen 50
tric pin |44 to which is connected the forward
end of a rod |46 connected at its rear end, as by
the screw threads |41 and nuts |48 to a block |49
held by a screw |5| between two legs of a case
pushing member |52.
Member |52 is pivotally 55
connected intermediately of its height to the see
saw frame, as by means of a pivot pin |53 sup
ported by a bar |54 bridging the bearings ||3,
and provided at its lower end with a pad or the
like |56 adapted to engage the rear end of a case 60
|51 being bound. It will be evident that upon
throwing in of the clutch |36 the lay shaft 18 will
make one complete revolution before being trip
ped during which period the connections between
the lay shaft and the case pusher member |52 will 65
cause the lower end of the latter to swing for
wardly and push the case forwardly so as to free
the bound wire from the machine and allow the
latter to rise clear of the case.
_
The amount of swinging movement of the case 70
pusher |52 may be readily adjusted by means of
the nuts |48 and also by means of the adjusting
holes |58 in the pusher member for the screw |5| .
A brake device comprising a brake band |59
with screw adjusted spring influenced tension 75.
5
2,111,115
means |60 may co-operate with a disc I6! on the
lay shaft in order to prevent the lay shaft from
turning beyond one complete revolution during
each cycle of operations.
The gears 16, 11, 19- and 8| may be protected by
guard |65 as best seen in Figs. 3, 4, 24 and 25, and
the front of the guard may be in substantial lon
gitudinal alignment with the wireway of the ma
chine and the gripping members 134, 36, of the
10 right hand gripping device 8 to thereby act as a
guide facilitating the insertion of the trailing end
of a wire between members 34 and 35.
Having now described our invention what we
claim as new and desire to secure by Letters Pat
15 ent is
1. In a wire tying machine, a shaft, wire ten
sioning means comprising cam members capable
of lengthwise movement on said shaft, means
yieldingly opposing such lengthwise movement in
20 one direction, a wire twisting device, two slides
operatively associated with the respective cam
members for gripping wire at opposite sides of
said wire twisting device, whereby upon continu
ous turning of said shaft the wire is tensioned by
25 a substantially straight line motion and for sub
stantially equal amounts at each side of the twist
ing device.
2. In a wire tying machine the combination
claimed in claim 1 wherein each cam member
30 consists of a collar having a peripheral cam` track
adapted to co-operate with a member of the
respective slide, and has an associated coiled
spring encircling said shaft and bearing at one
end against said cam collar and at its other end
35 against a stationary abutment.
3. In a wire tying machine having a wire way
extending at the front thereof, wire twisting
means, a shaft, wire tensioning means, compris
ing two cam members mounted upon said shaft
40 with ability for lengthwise movement thereon,
spring means o-pposing such lengthwise move
ment in one direction, two slides operatively asso
ciated with' the respective cams and adapted to
be guided for movement lengthwise of the wire
and the slotted pinion at the termination of the
twisting action.
6. In a wire tying machine, the combination
claimed in claim 3 in combination 'with means vfor
actuating said wire twisting means comprising
a segmental toothed gear and a cam nfast on said
shaft, a lay spindle parallel with said shaft, said
spindle having a ñrst toothed gear aligned with
said segmental gear, a second toothed gear adapt
ed to mesh with a slotted pinion of said wire 10
twisting means, and a cam co-operating with
said cam fast on said shaft, said last mentioned
cam having an approximately semi-circular face
concentric and'coterminous with the toothed por
tion of said segmental gear, a tangential face 15
connecting said semi-circular face at one end to
an end of a larger diameter` and slightly less
than semi-circular face which is connected at its
other 'end to the other endof said first mentioned
semi-'circular face by a substantially radial face, 20
the companion cam on said lay spindle being
circular with the exception o'f a chordal portion of
concave curvature complementary to that of said
second mentioned semi-circular face of the cam
that is fast on said shaft.
ì
25
7. In a_ wire tying machine, the combination
claimed in claim 3 in combination with wire
cutters located >one at each side of said wire
twisting means between same and the respective
tension slides, and cam means on said shaft timed 30
for actuating said cutters upon completion of the
wire twisting' action.
8. In a wire tying machine having a wire way,
wire tensioning means comprising two cam mem
bers mounted upon a shaft,>two slides operatively 35
associated with the respective cams and adapted
to be guided for movement lengthwise of the wire
way of~ the machine, a wire twisting device, and
gripping devices on the respective slides for grip
ping Wire at opposite sides of said wire twisting
device, whereby uponcontinuous turning of said
shaft the wire is tensioned b-y a substantially '
straight line motion and for substantially equal
amounts at each side of the twisting device, at
least one of said gripping devices being adapted to
tive slides for gripping wire at opposite sides of grip the wire with power derived from operation
of an associated cam member and without de
said wire twisting means, whereby upon continu
forming,
bending or biting into the wire, said
ous turning of said shaft the wire is tensioned by
gripping device comprising an anvil on one of
a substantially straight line motion and for sub
said slides, a lever pivoted to said slide and pro 250
stantially equal amounts at each side of the twist
vided at one side of the pivot with a pin coop
ing means.
'
4. In a wire tying machine the combination as v erating with a` track of one of said cam members,
and provided at the other side of said pivot
claimed in claim 3 wherein each cam has an end
less cam track having a partly spiral portion with a gripper cooperating with the anvil on said
which produces outward or tensioning movement slide.
9. In a wire tying machine having a wire way,
of the associated slide, a circumferential portion
which functions to hold the slide stationary while wire tensioning, wire twisting and wire cutting
the tensioned wire is being twisted, and a return devices, a main shaft extending parallel with the
portion which unites said iirst mentioned two wire way of the machine, and direct operative
60 portions and permits or causes the slide to return connections between said devices and said shaft
to its normal position after the tensioned wire whereby said devices are automatically actuated
to tension, twist and cut the wire during a single
has been twisted.
revolution
of the shaft which results in said de
5. In a wire tying machine, the combination
claimed in claim 3 in combination with' means vices being returned into their normal positions
65
ready to repeat the cycle oi operations.
65 for actuating said wire twisting means compris
10, In a wire tying machine having a wire way,`
ing a segmental toothed gear and a cam fast on
said shaft, a lay spindle, said spindle having a wire tensioning, wire twisting, and wire cutting
ñrst toothed gear aligned with said segmental devices, a main shaft extending parallel with the
gear, a second toothed gear adapted to mesh with wire way of the machine, direct operative con
70
70 a slotted pinion of said wire twisting means, and nections between said devices and said shaft
45 way of the machine, and devices on the respec
a cam ,co-operating with said cam fast on said
shaft, said two latter cams being so formed as
to lock the lay spindle against rotation except
,l when the wire twisting action is taking place,
75 and to cause reverse rotation of said lay spindle
whereby said devices are automatically actuated
to tension, twist and cut the wire during a single
revolution of the shaft which results in said
devices being returned into their normal posi
tions ready to repeat the cycle of operations, and 75
6
2,111,115
mechanism adapted, upon completion of each
cycle of tensioning, twisting and cutting opera
tions, to effect relative movement between the
of said frame having a driving shaft extending
forwardly to said wire tying machine, and mech
anism adapted to be actuated by said driving
machine and a case or the like that has been
shaft for effecting relative movement between
bound, in order to disengage the binding wire
from the machine and facilitate the removal
or' replacement of the bound case in relation to
the machine.
11. In a wire tying machine, the combination
claimed in claim 10, and including means for driv
ing said main shaft and said mechanism for
effecting relative movement between the bound
case and the machine from a common source of
power, and means for automatically transferring
15 the drive from said main shaft to said mechanism
upon completion of said cycle of wire tensioning,
twisting and cutting operations.
12, In a wire tying machine, the combination
claimed in claim 10 and including a lay shaft for
20 actuating said mechanism for moving a` case
relative to the machine, a constantly rotating
power driven shaft, manually operable means for
operatively connecting said main shaft to said
power driven shaft so that the main shaft takes
V25 the drive for a predetermined period at theV
expiry of which it is automatically disconnected
from the power driven shaft, and means adapted -
to automatically connect said lay shaft to said
power driven shaft at or about the time that
30 said main shaft is disconnected from said power
driven shaft.
13. In a wire tying machine, the combination
claimed in claim 10 and including a lay shaft for
actuating said mechanism for moving a case rela
35 tive to the machine, a constantly rotating power
driven shaft, a clutch manually operable to con
nect said main shaft to the power driven shaft
and adapted to automatically trip itself to there
by free the main shaft from the power driven
40 shaft after the wirev has been tensioned, twisted
and cut, and a second clutch, operable through
the agency of said main shaft at or about the
time that the latter is freed from the power driven
shaft, for connecting said lay shaft to said power
45 driven shaft, said second clutch being adapted to
trip itself to thereby free the lay shaft from the
power driven shaft after said case moving mech
anism has performed its function.
14. Improvements in and relating to wire tying
50 machines, comprising wire tensioning, wire twist
ing and wire cutting devices, a main shaft, op
erative connections between said shaft and said
chine and a case that has been bound, power 20
driving mechanism including a constantly ro
tating driving shaft, a manually operable clutch
for coupling said driving shaft to said main shaft,
means for automatically tripping said clutch as
the main shaft completes a revolution, a clutch 25
for coupling said driving shaft to said lay shaft,
means operated by said main shaft as it completes
each revolution for actuating said last mentioned
clutch to couple said main and lay shafts, and 30
means for automatically tripping said last men
tioned clutch after the case moving mecha
nism has performed its function.
17. Improvements in and relating to wire tying
machines as claimed in claim 10 wherein the ma- '
chine, power driving means therefor, and mech
anism for effecting relative movement between
the machine and a case or the like that has been
bound are mounted upon a tiltable or see-saw
frame so that the machine normally assumes a 40
position with its base slightly clear of the case.
18. Improvements in and relating to wire tying
machines as claimed in claim 16 wherein the ma
chine, power driving means therefor, and mech
anism for effecting relative movement between the 45
machine and a case or the like that has been
bound are mounted upon a tiltable or see-saw
frame so that the machine normally assumes a
position with its base slightly clear of the case.
19. Improvements in and relating to wire ty 50
ing machines as` claimed in claim 10 wherein the
machine, ’ power driving means therefor, and>
wire tensioning, twisting and cutting devices,
mechanism for effecting relative movement be
mechanism for effecting movement between the
tween the machine and a case or the like that has
been bound are mounted upon a tiltable or see
saw frame so that the machine normally assumes
55 machine and a case that has been bound, a lay
shaft for actuating said mechanism, a constantly
rotating power driven shaft, a clutch manually
operable to connect said main shaft to the power
driven shaft and adapted to automatically trip
60 itself to thereby'free the main shaft from the
power driven shaft after the wire has been ten
sioned, twisted and cut, and a second clutch, op
erable through the agency of said main shaft at or
about the time that the latter is freed from the
65 power driven shaft, for connecting said lay shaft
to said power driven shaft, said second clutch
70
said machine and a case or the like after com
pletion of the wire binding functions of the ma
chine.
16. Improvements in and relating to wire tying
machines comprising wire tensioning, wire twist
ing and wire cutting devices, a main shaft, direct
operative connections between. said devices and
said shaft whereby said devices are automatical
ly actuated to tension, twist and cut the wire dur
ing a single revolution of said shaft which re
sults in said devices being returned to their nor
mal positions ready to repeat said cycle of op
erations, a lay shaft, means operable by said
lay shaft upon completion of each said cycle of
operations to effect movement between the ma
a position with its base slightly clear of the case.
the machine being attached to the front part of
the frame and a power unit being mounted upon
the rear part of the frame, the frame being piv 60
oted intermediately of its length to a support, and
means to counterbalance the frame in a substan
tially horizontal attitude.
20. VImprovements in and relating to wire tying
machines as claimed in claim 16 wherein the ma
being adapted to trip» itself to thereby free the
chine, power driving means therefor, and mecha
nism for effecting relative movement between the
lay shaft from the power driven shaft after
said case moving mechanism has performed its
machine andk a case or the like that has been
function.
frame so that the machine _normally assumes a 70
’
15. Improvements in and relating tol wire tying
machines comprising a frame tiltably mounted
intermediate of its length to a support, a wire
tying machine attached to the front of said frame,
a power driving mechanism mounted on the rear
bound are mounted upon a tiltable or see-saw
position with its base slightly clear of the case,
the machine being attached to the front part of
the frame, and a power unit being attached to the
rear part of the frame, the frame being pivoted
intermediately of its length to a support and
7
2,111,115
means to counterbalance the frame in a substan
tially horizontal attitude.
21. Improvements in and relating to wire tying
machines as claimed in claim 15 wherein said
support is adjustable vertically upon a stand.
22. In a wire tying machine, the combination
claimed in claim 10 and including a lay shaft for
actuating said mechanism for moving a- case rela
tive to the machine, a constantly rotating power
driven, shaft, manually operable means for oper
atively connecting said main shaft to said power
driven shaft so that the main shaft takes the drive
for a predetermined period at the expiry of which
it is automatically disconnected from the power
driven shaft, and means adapted to automatically
connect said lay shaft to said power driven shaft
at or about the time that said main shaft is dis
connected from said power driven shaft, said
mechanism for effecting relative movement ben
tween the machine and a case comprising an ec
centric on said lay shaft, a rod extending from
Said eccentric and connected to a pivoted mem
ber adapted to engage the rear end of a case and
push it forwardly at the completion of binding
25
operations.
23. In a wire tying machine, wire tensioning
means comprising a shaft, a pair of opposed cam
members mounted to rotate ín unison about said
shaft while capable of lengthwise movement
30 thereon, means yieldingly opposing lengthwise
movement of said cam members in one direction,
slide members actuated by rotation of said cam
members to move in a straight path lengthwise of
the Wire way of the machine, and wire grippers
on said slides adapted to grip the wire in substan
tially horizontal and vertical alignment with said
wire Way.
»
24. In a wire tying machine, the combination
claimed in claim 23 and including a rotary wire
twisting device driven in synchronism with said
cams by a gear train including gears on a lay
spindle, and means whereby said twisting device 10
is held against rotation while tensioning is taking
place and whereby said slides are held against
movement while twisting is taking place.
25. In a wire tying machine, the combination
claimed in claim 23 and including wire cutting 15
devices adapted to be actuated in synchronism
with said tensioning cams by additional cams ro
tating with the first mentioned cams.
26. In a wire tying machine comprising wire
tensioning, wire twisting and wire cutting devices, 20
a main shaft and operative connections of a di
rect character, devoid of clutches or other inter
mediate coupling means, between said shaft and
said devices, whereby the latter are, during con
tinuous turning of said shaft in one direction,
brought into operation in the sequence named,
and by the end of such turning are returned to
their original or normal positions ready to repeat
the cycle of operations.
30
H. J. GIBBS.,
T. A. BINGI-IAM
D. W. BINGHAM.
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