US1970589A - Wire tying machine - Google Patents

Description

Aug. 21, 1934. P. WRIGHT WIRE TYING MACHINE Filed April 4, 1933 5 Sheets-Sheet l 3 9/ a7 as 9% fare/afar 5 Sheets-Sheet 2 ('ltwmwng Aug. 21, 1934.

mm. \m R. Q m \M\ b km 0 M m Q H Q 0/ N Wm u o k Aug. 21, 1934. P. WRIGHT WIRE TYING MACHINE Filed April 4, 1933 3 Sheets-Sheet 3 Err/vim my;

Patented Aug. 21, 1934 orriei'.

WIRE TYING MACHINE Parvin Wright, Los Angeles, Calif.

Application April 4, 1933, Serial No. 664,443

34 Claims.

f ,This invention relates to machines for tying packages and boxes with wire, having for its object to provide a device simple in construction 15? chine with the gear casing cover removed, the

parts being shown ready for manipulation to tension the wire and twist the knot therein;

Fig. 2 is a top plan view of the parts shown in Fig. 1;

Fig. 3 is a view similar to Fig. 1 but showing the parts at the end of the tensioning and twisting operation;

. Fig. 4 is a separated perspective view showing details of construction and arrangement of the 255T wire holding dog and latch therefor;

Fig. is a vertical cross sectional 'view taken to the rear of the holding dog; I

' Fig. 6 is a detail sectional view illustrating the securement of the box contacting plate with 30.1 the base plate of the machine;

Fig. 7 is a detail view illustrating the operation of the cutter on the right hand side of the machine as seen in Fig. 3, said View looking in a direction away from the twister pinion;

Fig. 8 is an elevational View of the left side of the machine as shown in Fig. 1;

Fig.9 is an elevational View of the right side of the machine as shown in Fig. 1;

Fig. is a perspective view of the twister pinion; v

Fig. 11; is a perspective view of the housing or mounting for the twister pinion;

Fig. 12 is a view illustrating the securement of the twisterpinion housing to the base plate 15?" of the machine; and.

Fig. 13 is a view of the knot formed by this machine. V

This invention comprises'generally a casing indicated at 1 which is hollow to provide space for a 250; spur gear 2 rigidly secured to a shaft 3 extending transversely of the casing and journallecl in the side walls 4 and 5 thereof. Ihe shaft extends through the wall 4 and carries at its end a bevel pinion 6 meshing with an arcuate segment rack '55. 7 carried by the handle 8 pivoted as at 9 to an ear 10 extending laterally from the wall 4 of the casing. The shaft 3 also extends through the other wall 5 with its ends engaged by a nut or other suitable means for securing the shaft in position relative the casing, insuring the functioning of the gears 2 and 6.

With particular reference to Figs. 1, 10, 11 and 12 it will be seen that the gear 2 meshes with the twister pinion 15 of the usual and well known type in that it is provided with laterally extending trunnions 16 and 17 and is provided with the radial slot 18 to permit the two bights of wire forming the tie for the package to be placed at substantially the center of the twister pinion.' Said pinion is mounted in a housing formed by two blocks 19 and 20, the former being provided with a recess 21 cutin from two adjacent sides, said recess to accommodate the toothed portion of the twister pinion. Both blocks 19 and 20 are formed with bearings 22 and 23 for the trunnions 17 and16 respectively,both blocks at one end being formed with the mouth portions 24 and 25 leading to the slotted portions of the trunnions of the twister pinion and the slot 18 thereof. It will, of course, be understood that the mouth portions 24 and 25 are oppositely curved, or flared upwardly and downwardly as shown in Fig. 12, to provide easy ingress for the wires of the tie into the twister pinion.

As usual in constructions of this character the 5'; slot 18 ofthe pinion will be of a dimension only slightly greater thanthe diameter of a bight of the wire tie. On the other hand, the trunnions 16 and 17 as well as the mouth portions 24 and 25 of the pinion housing blocks, each have a dimension slightly greater than twice the diameter of the wire tie, so that when the knot shown in Fig.

13 is formed, the twist portions thereof will not bind but may slip readily from the trunnions through the mouth portions of the twister pinion housing. 1 i a r The blocks 19 and 20 may be secured together in any suitable mannersuch'as by a bolt passing through the opening 26 of block 20 and. threaded into the other block 19, registration of the trun- 1'00 nion bearings 22 and 23 being insured by employment of the dowel pins 2'7'and 28, or the like. One or both of the blocks is secured by one or more screws such as 29 to the base plate 30 of the machine, as clearly shown in Fig. 12, and preferably the assembled blocks are set close in a cut-out portion of the bottom wall 96 of the casing to additionally insure retention of the pinion in operating position. 7 r

The opposite walls 4 and 5 of the casing 1 are each provided with a suitable slotway disposed in registration with the mouth portions 24 and 25 and the slot of the twister pinion to permit ready entry of the bights of the tie wire as will be readily understood. The side wall 4 has secured to the outer surface thereof a steel plate provided with a mouth portion 36 similar to the portion 24 of the block 19, and against the outer side of the plate 35 is secured an L-shaped casting generally indicated by the numeral 37,.the horizontal pore tion of which constitutes an anvil 38 against the upper surface of which the free end of the wire tie may be secured as by the holding dog 39. A suitable bolt 40 secures the parts 35 and 37 to the side wall 4 of the casing.

The dog 39 is rigidly secured to the forward end of an oscillatory shaft 41 which extends through the upper portion of the casting 37 and carries at its rear end a lug generally indicated by the numeral 42. Through the depending portion of this lug extends a bolt 43 passing through the wall 4 of the casing and provided at its inner end with the nut 44 and an interposedspring 45 which latter exerts a pressure tending to draw the lug 42 toward the plate 35. -This normally causes the bottom serrated surface 46 of the dog 39 to positively engage and'grip the end of the wire tie against the anvil 3,8.

The dog 39 is provided with a tooth or projec .tion 47 adapted to engage the latch or tripplate 48 when the dog is oscillated after the knot has been tied, thereby freeing the dog from its; wire gripping position. This trip plate. is mounted 7 adjacent the anvil casting38, being supported taking placeat the completion of the formation on pins such as 49 extending through the holes 5 0 and 51 of the latch plate, to and through corresponding holes in the anvil casting through corresponding holes in thesteel plate 85, and having their ends threaded as'shown inFig. '5 into the side wall 40f the casing. Lightcoil springs 52 are disposed betweenthe heads of the pins 49 and theoutersurface of the trip plate 48 to normally urge the latter against the vertical side wall of the anvil casting, saidtrip plate being yieldable against the tension of these springs during oscillation of the dog.

A rod 55 extends forwardly from the bottom portion of the lever handle 8 and is adapted,

shown in Fig. 3 so that the twisted knot may be freely expelled from the machine. In other words, the parts are shown in Fig. 3 at the end of the down stroke of handle 8 which, through the gears 7, 6 and -2,-has caused the necessary revolutions of the twister pinion 15 to form the knot, the releasingfand:latchingof the dog 39 of the knotf The other side of the machine is particularly illustrated in Fig. 9 but with further reference to Figs. 1, 2 and 3, it will be seen that there is pro-' vided another car 60, similar to ear. 10 in that it expands laterally from the casing Land to this ear is pivoted as at 61 the lever handle 62 carrying a stud roller 63 adapted to ride in the arcuate slot 64 of a lever 65 pivoted at its upper end as'at 66 to a boss 67 formed on the casing 1. The parts 60, 62, 65 and 67 are disposed in parallel planes which are inclined to the vertical plane passing through the ear 10, the purpose of this inclination being to permit operation of the tensioning and cutting mechanisms in more practical and efficient manners.

Figs. 1 and 3 clearly show the operation of the tensioning members of this machine. In other words, the lever 65 is operable to swing its lower end outwardly by virtue of the movement of the roller 63 in slot 64. On the front face of the lever 65 there is formed a lug 68 at the bottom thereof and coacting with the upper surface of this lug is a second spring pressed dog 69 pivoted as at 70 so that the loose free end of the wire tie may be gripped between said dog and said lug, the lower portion of the dog having an extending pin '71 over which the end of the wire may be looped, as will be readily understood from the drawings. By inclining the lever .and other parts as hereinbefore mentioned, this dog 69 and the anvil lug 68 will create a pull on the held 'wire more nearly in line with the bight which passes through the: twister pinion, thereby creating a lesser bend of 85 similar to the companion plate 35 on the. op-" posite side of the machine and against the outer surface of the plate 85 there is pivoted as at 75. a

cutter generally indicated by the numeral 76.

clearly shown in Fig. '7, with cutter edge '77, and

notch '78 to straddle the bight of the wire tie not desired tobe cut. The extreme lower. edge of the cutter is made fiat to engage the surface. of a leaf-spring 79 secured at one end as at 80 to the base plate 30 of the machinethe disposition of parts being such thatwhe'n'no tension is placed on the cutter member 76. to: oscillate it about its pivot '75, the cutting edge '77 will lie immediately above the free end. of the wire tie which is subsee quently to be severed. The upper end of the cutter member '76 carries a roller 81 so positioned as to lie in the plane of the lever handle 62 so that a-cam 82 carried by said handle will strikelsaid 3 and 7.

This cam 82 ismounted on thehandle at point near the lower end thereof when the handle is in raised position, so that when the handle is moved downwardly, to tension the wire, the

cam 82 will be moved upwardly and during this,

movement the cam will; due to its inclination,

cause the roller 81 to move the cutter member 76. about its pivot to raise the cutting edge-'1'! still further above the-tie wire, this movement being aninoperative oscillation of the cutter. On the other hand, when'the handle 62 is raised, the cam, 82 will movedownwardly, and in this directional movement the opposite face of thecam will cause the roller 81 to move the cutter member oppo-;

sitely about its pivot so that the cutting edge will cause of the'notch 78. r

'In operation, thetie wire is inserted inithe. well known manner through the several mouth,

roller and oscillate. the cuttermember, see Figs,

portionsihereinbefore mentioned and the extreme end of this wire is pushed axially'against the trip plate 48, thereby moving, said plate against the tension. of the light springs 52 and releasing the tooth 47 of the dog 39 to permit oscillation of said dog to bring. its serrated surface into gripping position on the end of the wire, forcing said wire against the surface of the anvil 38. It is to be observed that this anvil surface is inclined downwardly in anoutward direction, so that the pressure of the dog 39 will cause a slight downward bend of the held end of the wire. This provides a set of said end which, after the knot is twisted and released, causes the end to be depressed below the upper surface of the knot so that said end cannot .tear-or injure superposed packages nor the hands of those moving the tied package.

; With the end of the wire thus secured by the dog 39, the bight 86 lying in the innermost extremity of the twister pinion slot is passed to the edge of the box, thence downwardly and under the box, thence upwardly on the other side, and thence over the top of the box as bight 87, see Figs. 1 to 4, and inserted in said various mouth portions and twister pinion, with the extreme 'free end of the wire, indicated at 88, passed between the tensioning dog 69 and the lug 68 and thence looped around the post '71 of said dog. It will, of course, be understood that during the placement of the wire tie around the box,

both handles 8 and 62 will be in raised position,

as seen in Fig. 1.

The handle 62 is then moved downwardly about its pivot 61, which causes an outward swing of the tensioning lever 65, causing the dog 69 to grip more tightly the free end 88 of the wire, and to. transmit the increasing tension axially throughout the wire tie about the box, as is well understood. When the handle 62 has reached the lowermost extremity of its stroke as indicated in Fig. 3, the wire will have been greatly tensioned, both bights forced to the inner extremities of the slots provided therefor in the side walls and the twister pinion, and the knot vvis then ready to be formed.

The handle 8 is then depressed or moved downwardly which actuates the twister pinion through the intermediate gears 6 and 2, and since the slots of the mouth portions of the side plates 35 and 85, as well as the slot 18 of the twister pinion are of a dimension only slightly greater than the diameter of each bight of the tie wire, the two bights will be maintained in parallel untwisted relationship at said plates and at the middle portion of the twister pinion. The two bights betweenthese portions, however, will be twisted together with the ultimate formation of the knot shown in Fig. 13.

With particular reference to Figs. 1 and 3, it will be seen that there is provided a screw 90,

' workable into and out of a portion of thecasing 1, for limiting the upward throw of the handle 8. In other words, this screw is moved into or out of the casting of the casing and ultimately secured in that position which, when the handle 8 is thereagainst, will insure a registration of the slot of the twister pinion with the slots of the side plates 35 and 85, A similar screw 97, co-

operable with the lug 98 formed on said handle,.

is provided for insuring similar registration at the lowermost throw of said handle, thereby permitting discharge of the twisted knot. Hence, at the. end of the tensioning and twistingoperations, both handles will be down, and when the tensioning handle is raised, the free endof the wire 88 will be severed from the knot.

tips the entire machine forward by means of the elevated tensioning handle, thereby releasing the. knotted tie from the machine because of the regIstration of slotways. As hereinbefore stated, this machine is provided with a base plate 30 extending under all-v from moving readily over the upper surface of. the box or package andhence an important fea ture of this invention lies in the provision of means to permit movement of the machine in a direction axial of the tie wire during the tensioning and twisting operation, whereby the tension created by the machine on the tie wire. may be distributed more equally in both bights 86 and 87 of the tie.

To this end the device is provided with a package or box contact plate 91 wholly underlying the base plate 30, said contact plate provided at intervals with teeth or other projections, or otherwise suitable roughened, to cause agripping between said plate and the surface of the box. The extreme rear edge of the contact plate 91 is turned upwardly and over the base plate. 30 as indicated at 92 in Fig. 8, and the opposite or forward edge of the contact plate is provided at suitable intervals with horizontally elongated slots 93 to receive therethrough headed bolts 94 threaded into the correspondingly upwardly rolled forward edge portion of the base plate 30.

Suitable anti-friction rollers 95 are disposed between the machine proper and the upper ,sur-,

face of the contact plate 91, said rollers being shown in Figs. 1 and 5 and retained in position as by counter sinking in the bottom wall 96 of the casting forming the casing 1, these rollers being provided at suitable spaced intervals. For convenience the casing 1 may be made in two or more parts, there being shown in Figs. 8 and 9 a construction providing a front cover portion 99 secured as by the bolts 100 to the main body portion of the casing to permit ready access to the various moving parts. Preferably the joint between this cover portion 99 and the main portion of the casting is formed in an axial plane of the gear shaft 3 so that each of said por-, tions will. constitute a half-bearing for said shaft.

From the foregoing disclosure it will therefore be seen that by this invention there is provided a machine for tying the ends of a wire passed for example around a box, the tie being in the nature i of a twisted knot. The device is provided with means for tensioning one bight of the wire, as well as a pinion adapted to twist the, parallel bights of the wire in the machine to formthe opposite directions on opposite sides offthe ma chine.

In addition the tensioningllever 62is operable in one directionIto' tension the wire and when operated in the opposite directionit actuates the cutter '76 to sever the end of the twisted wire. During the tensioning operation, the machine is permitted a rolling movement over the under,-

most plate 91 which is provided on its undersur-i,

face with box engaging means in the natureiof With the twisting handle .3 still down, the operator then projections .or the like. Lastly the tensioning lever 62. is utilized in its raised position and after the'knot is tied, to tip or roll the entire frame of the machine forward over the upwardly curved.

bottom edge of the device to permit the ejection of the twisted knot from the machine.

The clamping means for the tie wire comprises the dog 39 which is pivoted and provided with a tooth 47 -as well as a laterally extending arm 56 sothalt'when the pin carried by the lever 8 for actuating the twister pinion, is moved arcuately; said pin will strike said arm and oscillate the dog to' release the same from the endof the tie wire, and in this movement the tooth 47 will s'nap over the upper edge of the yieldable plate 48 and hold the dog in released position until it is tripped by the next inserted wire.

It is obvious that those skilled in the art may vary the details of construction as well as arrangements of parts without departing from the spirit of the invention, and therefore it is not desired'to be limited to the foregoing except as'may be required by the claims.

What is claimedis:--

3 j 1. In awire tying machine the combination of means operable in one direction to tension the wire; independently operated wire twisting means; and a cutter operable by the reverse movement of the tensioning means for severing P 3 the end of the twisted wire.

2'. Ina wire tying machine the combination of means operable in one direction to tension the wire; a cam carried by said means; independently operated wire twisting means; and a cutter actuated by said cam and operable by the reverse movement of the tensioning means for severing the end of the twisted wire. 7

3. In a wire tying machine thecombination of pivoted means operable in one direction to tension the wire; a cam carried by said means; wire twisting means; and a pivoted cutter actuated by said cam during the reverse movement of the tensioning means to sever the end of the twisted wire,1said cam inoperatively oscillating said cutter 5. during the tensioning operation.

4. In a wire tying machine the combination of a frame provided with a pair of spaced similar slots to receive therein parallel bights of a wire; wire twisting means provided with a slot regis- II trable with the slots of said frame at the begin- "f and a plate carried by said frame and over which said frame may move during the tensioning and twisting operations, said plate provided with box engaging means. 6. In a box wiring machine the combination of ii a frame provided with means for receiving, tens'ioning and twisting the ends of the applied wire; and a plate carried by said frame and over which said frame may move during the tensioning and twisting operationss'aid plate having its under surface provided with box engaging means.

In a box wiring machine the combination of a frame provided with means for receiving, tensioning and twisting the ends of the applied wire;

and-a plate interposed between the box and said :1 framefsaid-plate carried by said frame and over which said frame may move during the'tensiona ing and twisting operations, said plate provided with box'engaging means. v

8. In a box wiring machine the combination of a frame provided with means for receiving, tensioning and twisting the ends of the applied wire; and a plate slidably secured to the bottom of said frame and separating said frame from the box, said plate provided with box engaging means" whereby said frame is permitted movement relative the box during the tensioning and twisting operations. a l

9. In a box wiring machine the combination of a frame provided with means for receiving, tensioning and twisting theends of the applied Wire; a plate slidably secured to the bottom of said frame and separating said frame from the box, said plate provided with box engaging means;

and rollers interposed between said plate-and ing means; means for clamping the endof' a wire adjacent one'of 'said slots; means to release said clampingmeans at the end of the twisting operation; and means to hold said clamping means in released position until tripped by the next inserted wire.

11. In a wire tying machine the combination" of a frame provided with wire receiving slots and associated wire tensioning and wire twist-' ing means; means for clamping the end of a wire adjacent one of said slots, said means provided with a tooth; means to release said clamp-l ing means at the end of the twisting operation; and means engageable with said tooth to hold said clamping'means in released .position rmtil tripped by the next inserted wire. j

12. In a wire tying machine the combination of aframe provided with ,wire receiving slots and associated wire tensioning and wire twisting means; means for clamping the end of. a wire adjacent one of said slots, said means provided with a lateral extension; means engageable with said extension to release said clamping. means at the end of the twisting operation; and meansto hold said clamping means in released position until tripped by the next inserted wire.

13. In a wire tying machine the combination of a frame provided with wire receiving slots and associated wire tensioning and wire twisting means; means for clamping the end of a wire adjacent one of said slots, said means provided with a tooth as'well as with a lateral exand associated'wire tensioning and wire twisting means, the wire twisting means including anoperating lever; a pivoted dog for clamping the" end of a wire adjacent one of said slots, said dog provided with a laterally extending tooth as well as with an" extending arm; means comprising'an extension from said lever engageable withsaid arm'to' release said dog at the end, offthe twisting operation; and means comprising a yieldable plate to hold said dog in released position until tripped by the next inserted wire.

' 15. In a wire tying machine the combination of .a frame for receiving two bights of a wire; means for twisting saidbights together to form a knot; and means for tensioning one of said bights prior to the twisting operation, said means including a compound leverage comprising two members each pivoted to said frame, one member provided with a cam slot receiving therein movable in directions away from the twisting means. 7

17. In a wire tying machine the combination of a frame for receiving two bights of a wire;

means to tension one of said bights; means to twist said bights together after tensioning; and 'a pair of operating handles disposed on opposite sides of the twisting means and operatively movable in directions away therefrom, one handle for actuating the tensioning means and the other for'actuating the 't'wisting means. 7

18. In a wire tying machine the combination of a frame for receiving two bights of a wire; a pinion for twisting said bights together; a mounting for said pinion comprising two journal blocks each receiving therein one of the trunnions of said pinion, one of said blocks provided with a recess for receiving said pinion, both of said blocks secured together as well as to a wall of said frame; and means to actuate said pinion.

19. In a wire tying machine the combination of a frame for receiving two bights of a wire, said frame having its bottom forward edge upwardly curved to provide a rolling surface; means for twisting said bights together to form a knot; and means for tensioning one of said bights prior to the twisting operation, said means including a compound leverage one member of which is provided with a cam slot receiving therein an extension of the other member, said other member constituting means for rolling said frame forwardly about its curved edge to cause the ejection of the twisted knot.

20. In a wire tying machine the combination of a frame for receiving two bights of a wire, said frame having its bottom forward edge upwardly curved to provide a rolling surface; means for twisting said bights together to form a knot; and means for tensioning one of said bights prior to the twisting operation, said means including a lever constituting a handle for rolling said frame forwardly about its curved edge to cause the ejection of the twisted knot.

21. In a wire tying machine the combination of a lever to tension the wire; a cam formed as a plate extension of the edge of said lever; independently operated wire twisting means; a pivoted cutter under spring tension; and an extension from said cutter disposed in the path of said cam for actuation by the latter.

22. In a wire tying machine the combination of a lever to tension the wire; a cam formed as a plate extension of the edge of said lever; independently operated wire twisting means; a pivoted cutter under spring tension; and an extension from said cutter disposed in the path of said cam for actuation by the latter, said cam inoperatively oscillating said cutter when said lever is tensioning the wire but causing a cutting oscillation upon the reverse movement of said lever.

23. In a wire tying machine the combination of a lever to tension the wire; a plate extension of the edge of said'lever, said. extension constituting a cam having opposite engageable surfaces; wire twisting means; a pivoted cutter under spring tension; and an extension from said cutter disposed in the path of said cam for actuation by the latter, one surface of said cam inoperatively engaging thecutter extension du'ring the tensioning movement of said lever, and' the other surface of said cam'causing a cutting oscillation of the cutter upon the reverse movement of said lever. a I

24. In a wire tying machine thecombination of a lever to tension the wire; a plate extension of the edge of said lever, said extension constituting a cam having opposite engageable surfaces; I

wire twisting means; a pivoted cutter under spring tension; and an extension from said outter disposed in the plane of said lever for actuation by said cam, one surface of said cam inoperatively engaging the cutter extension during the tensioning movement of said lever, and the other surface of said cam causing a cutting oscillation of the cutter upon'the reverse movement of said lever. I

25. In a wire tying machine the combination of wire tensioning and wire twisting means; a lever for actuating the tensioning means; a cutter for severing the wire after the twisting thereof, said cutter having an extension disposed in the plane of said lever; and a cam formed on the edge of said lever and adapted to pass the cutter extension when said lever is actuated in either direction, said cam having plural surfaces engageable with said extension, one surface engageable during the tensioning movement of said lever to cause inoperative actuation of the cutter, and the other surface engageable during the reverse movement of said lever to cause wire severing actuation of the cutter.

26. In a wire tying machine the combination of wire tensioning and wire twisting means; a lever for actuating the tensioning means; a cutter for severing the wire after the twisting thereof, said cutter disposed in a plane transverse to the plane of lever actuation but having an extension normally disposed in said plane of lever actuation; and a cam formed on the edge of said lever and adapted to completely pass the cutter extension when said lever is actuated in either direction, said cam having opposite surfaces engageable with said extension, one surface engageable during the tensioning movement of said lever to cause inoperative actuation of the cutter, and the other surface engageable during the reverse movement of said lever to cause wire severing actuation of the cutter.

27. In a box wiring machine the combination of a frame having mounted thereon means for receiving, tensioning and twisting the ends of the applied wire; and a plate carried by said frame and over which said frame and its associated means may move during the tensioning and twisting operations, said plate provided with box engaging means.

28. In a wire tying machine the combination of a frame for receiving two bights of a wire; means for twisting said bights together to form a knot; and means for tensioning one of said bights prior to the twisting operation, said means including two cooperating members each pivoted to said frame, one of said members engaging said bight.

29. In a wire tying machine the combination of a frame for receiving two bights of a wire; a

pinion for twisting said bights together; a mounting for. saidpinion comprising two journal blocks eachreceiving therein one of the trunnions of said pinion, one of said blocks provided with a recess for receiving said pinion, both of said blocks secured together as wellas to a wall of said frame; a slotway in each block for passing pinion comprising two journal blocks each provided with a bore for receiving therein one of the trunnions of said pinion, one of said blocks provided with a recess for receiving said pinion, each of said blocks provided with a slot radially disposed to its bore for passing said bights to the slotway of said pinion, both of said blocks secured together as well as to a wall of said frame;

and means to actuate said pinion.

31. In a wire tying machine the combination of means operable in one direction to tension the wire; wire twisting means; a cutter for severing the end of the twisted wire; and a double acting cam mounted on the tensioning means, said cam inoperatively oscillating said cutter upon the tensioning movement of said first named means and operatively oscillating said cutter to sever the'end of the twisted wire upon the reverse movement of the tensioning means.

32. In a wire tying machine having means to tension and then to twist the wire, the combination of a cutter to sever the end of the-twisted wire; and means carried by the tensioning means for actuating said cutter in opposite directions,

one only of which is operative to sever therwire.

33. In a wire tying machine the combination of an oscillatable member which when moved in one direction tensions V the wire; wire twisting mechanism; a cutter forsevering the end of the twisted wire; and means carried by said member for actuating said cutter, said means in one move;- ment of said member actuating the cutter to sever the end of the twisted wire, and in the reverse movement of said member actuating the cutter inoperatively.

34. In a wire tying machine provided with twisting mechanism the combination of an oscillatable member for tensioning the wire previous to the twisting thereof; a cutter for severing the end of the twisted wire; and means carriedby said member and actuating said cutter in each movement of said member, the actuation of said cutter to sever the end of the twisted wire taking place during one movement only of said member.

PARVIN WRIGHT.

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