US1305422A - warwick - Google Patents

Description

R. M. WARWICK. MACHINE FOR TYING OBJECTS WITH WIRE. 'APPLICATION FILED IULY 12, I915. RENEWED NOV. 4, H8.

Patented June 3, 1919.

7 SHEETS-SHEET l R. M. WARWICK. MACHINE FOR TYING OBJECTIS WITH WIRE.

APPLICATIION men JULY 12, m5. RENEWED NOV. 4. 1918.

7 SHEETS-SHEET 2.

Patented June 3 R. M. WARWICK. MACHINE FOR TYING OBJECTS WITH WIRE, APPLICATION FILED JULY 12. ms. RENEWED NOV. 4. 19m.

Patnfed June 3, 1919;

TSHEETS-SHEET 3- rug NORRIS PEYERS ca. Pmzm-urno WASIIINGION. n. c.

R. M. WARWLCK. MACHINE FOR TYING OBJECTS WITH WIRE. APPLICATION FILED JULY {2, I915- RENEWED NOV. 4,1918- 1,305,422. Patented June 3,1919:

YSHEETS SHEET 4.

R. M. WARWICK. MACHINE FOR TYING OBJECTS WITH WIRE.

APPLICATION HL ED JULY 12, 1915. RENEWED NOV. 4,1918- w mm a n A? t. 6 a 7 EH 7 p 8 4H 6%,! w 6 E L, kr/

R. M. WARWICK.

MACHINE FOR TYING OBJECTS WITH WIRE. APPLICATION FILED JULY 12,1915. RENEWED NOV-4,1918.

1,305,422. Patented June 3, 1919.

ZSHEETS-SHEET 6.-

fi nesseax I W %4% v v 4 w,

v R.,M. WARWICK. MACHINE FOR TYING'OBIJECTSIWITH WIRE. APPLICATIION man JULY 12.11915. RENEWED N0V.14,'1l8.

Patented June 3,1919.

1- SHEETS-SHEET 1.

' tion of E. V. Ness'ling, filed Apr. 19, 1915p wire-tie will be madeto perform the'func- "UNITED 1 PATENT FF CE-*- ROGERS 1VL- WARWICK, or CHICAGO, ILLIno Is, ASSIGNQB, To GENERAL WIRE TIE'CQ, or r CHICAGO, ILLINOIS,'A CORPORATION or ILLINOIS.

MACHINE r012. 'rYING omnorswrrnwmn Application filed July 12, 1915; Serial 'No. 39,515.

Objects with Wire; and I do hereby declare thefollowing to be a fu11,.clear, andIeXact descriptlon of the 1nvent1on,su'ch as, Wlll enable others skilled in the art to which it appertains to make-and use the same.

This invention has'for its objectto provide certain new and useful improvements in machines for tying objects with wire, and

relates more particularly to that type of ma chine which is fully 'described.and. claimed in my copending' applications @Ser; No; l S MSQat. filed June"13, 1914,'.Ser; No. .9962,"

filed Feb. 23, 1915, and in the oint applica? tion of lVarwick and Nesslin Ser. No. 22374, filed Aprl 19, 1915,'and theapplica- Sol. No.22395.

The main object of the. present invention is to provide a'machine ofthe characteridefined which includes mechanism forfeed ing,. retracting, and cutting wire, and an ob ject carrier associated with said mechanism"- which is equipped with object -engaging means and wlth means or mechanism coacting with the aforesaid wire feeding; retract ing and cutting mechanism for passlng such wire around the object, the first-named mechanism being further equippechwith means coacting w1th the w re-engaging mechanism for tying the loop of wire passed about each object.

A further object of mouths of bags, which will compress'such passing the wire-tie about the same so that the latter may be easily placed tightly about the same without undue strain on the wire manipulating mechanism, and Wherehy the tion of preventing eXpansio'nof such object without first performing the'functi'on of contracting the same.

Specificationof Letters Patent.

WARWICK,

the'invention'is toi provide Ob160t-Gllg2tg1i1g means for ob ects ofa yieldlngnature, such as the puckered Renewed November 4, 1918. Serial No. 261,158. 7

In" the accompanying drawings illustrating a-su'itable embodiment of the present invention:

Figure 1 is a' vie'w in side elevation ofa I machine for tying objects with wire constructed in accordance with the invention.

Fig. 2 is atopplan view of the same. 'FigfS isfa fragmentaryjgcentral vertical longitudinal sectio ofthesame on the line 33 of Fig; i

Patented June 3, 1919. I.

a ;'60 Fig. 4 is a detail horizontal sectiononan enlargedscale on the'horizontal' plane in which the wire moves.

Fig-5 is a detail horizontal section onthe line 5..5. of Fig. V i

6 .is" a detail fragmentaryfront ele vat'i'on tr o-ne' ofthe object-engaging and \vireJg-uiding members of the bag carrier.

Fig. 7 is .a fragmentary detail vertical longitudinal section on the line .7-7 of Fig. 2; w

9flis a: detail view. lnelevation of the wire tie formed by the machlne about the" object. 1 l 4 i "Fig. 10 is a detail horizontal theline 101() of Fig. '3;

the line" 1 1' '1 1 ofiFig. 3.

Fig; 12 is a fragmentary F'g. 8" s a detail vertical transverse section on the line -8 of Fig.2.

section on; 1

view of another embodiment of the object engaging and wiresguiding mechanism of EhBObJBCi} carrier. Fig. 13 1s a detailcentral vertlcallongr- Fig. 1 1 is a and 13.

the mechanism for feedingpredetermined tudinal section of the same on the line 11 l1ofFig.10. w

deta l sect onal view ofthe wire-bending device shown Figs. 12"

I r V so The machine comprises, as aforesaid."

} lengths of' wire forward from 'a coil threof,'mechaiiism 'forengagingthe"outer end of the wire thus fed forward, mechanism for 3 retracting the wire thus fed forward to an tightly about the object,"mechani sm for ty ing a loop" of wire. and mechanism for cut.-'

ting the wire and bending the end portions of the piece or loop thus cut from the body or coil thereof to form a key, all of the aforesaid mechanism being contained on what I shall term the rigid portion of the frame of the machine. The machine also includes an object-carrier in the form of a turn-table which is equipped with objectengaging mechanisms with each of which there is associated means for causing the wire fed forward by the feeding mechanism to be looped about the object to be tied, and which guides the extreme end of the wire into position to be engaged by the aforesaid engaging means to hold said end against retraction whereby the retracting mechanism is enabled to cause the loop of wire to be drawn tightly about the object.

The mechanism for feeding the wire for ward, retracting it, cutting the same, and forming the key for opening the tie is substantially identical with the mechanism shown and described in my aforesaid application, Ser. N 0. 9 962, and the wire guide for forming the loop about the object to be tied is likewise similar in construction and op eration, but is disposed upon the bag-cap rier instead of being carried by the portion of the machine supporting the aforesaid mechanism.

In the drawings, 1 indicates the table or supporting plate for the mechanism for feeding the wire forward from the coil. Supported upon said plate is a wire guide 2 consisting of a tube through which the wire is passed in engaging relation to retracting devices 3 therefor. Associated with i the guide 2 is what may be termed a continuation 4 of said guide likewise consisting of a tube through which the wire passes into engaging relation to the wire feeding device 5, and it then passes through a further continuation 6 of said wire guide through which the wire is passed to project from the forward end of the machine and between clamping jaws by means of which it is adapted to be twisted to close and tie the portion there of which is passed about the object carried by the object-carrying portion of the mecha- The wire feeding devices 5 consist of opposed segments having roughened or knurled opposed faces adapted to engage the wire passing therebetween, said segments being carried by spur gears 7 and 8 respectively, the former being rotatable on a stud 9 rigidly mounted on the table 1, and the latter being rotatable on a stud-shaft 10 which is carried by a reciprocable plate 11 mounted in suitable guides 12 on said table 1. The said reciprocable member 11 comprises a plate which is normally maintained at the inner limit of its movement by means of the compression springs 13, and which, when so disposed causes the opposed more fully described. The said spur gears- 7 and 8 are adapted to mesh and their relative separating movement is so slight as to maintain the same always in mesh. The gear 7 is driven from a source of power and serves to rotate the gear 8 meshing therewith. The said gears are rotated continuously during operation of the machine, and are adapted to feed forward at intervals a length of wire equal to the length of the arcs described by said segments 5 during each revolution thereof. The wire thus fed passes through the several guides 2, 4c and 6 and through the guide opening 17 in the rotatable head 18, said guide opening 17 being concentric with said head at the inner head of the latter and extending at an incline therethrough so that its outer or delivery end is disposed at a distance from the axis of rotation of said head. Said discharge opening is equipped with a removable guide member 19 which may be removed and replaced when worn. The length of wire fed forward is projected from said member 19 through the wire guide or wire looping member 20 which is substantially horseshoeshaped and is disposed upon the obj ect-carrier, and causes the extreme end of the wire to be projected from its other end back toward said head 18 where it is engaged by a clamp or vise comprising the opposed members 21 and 22. Both said vise-members consist of levers pivotally secured between their ends within thesaid head 18 and which project at their forward end or head portions from the forward end of said rotatable head or sleeve 18. The head 23 of the member 21 is flaring so as to project laterally beyond the side edges thereof; while the member 22 is one-half the width of said member 21 and is provided with a head por tion 24 corresponding in shape and size with one-half the head portion 23 of the member 21. The inner ends of said members 21 and 22 are disposed in the path of wedge-members 25 and 26, both of which are rigid with a reciprocabl head 27, the latter and said wedge portions or members 25 and 26 being reciprocable on the central partition member 29 of said sleeve or head 18 and through which the guide opening 17 is bored. Associated with the said member 21 and head 23 is a second member similar to and disposed beside the member 22 and which has a head portion similar to the latter and coacting withthe other side portion of the head 23 of the member 21. The said last-named vise-member is not illustrated in the present drawings, but is fully illustrated and described inthe. last-named aforesaid copending application. The wedge member 26 is provided at its forward end withtwo cam surfaces, one of which engaging the said member 22 causes the head 24 ofthe' latter to approach the head 23 of said member 21 to clampthe wire before the other cooperating vise-member, not. shown, engages that portion of the. body of the wire disposed between the head thereof and the, corre-v sponding portion of the head 23.. The head 27 .e carrying said wedge-members is adapted to mak two separate forward movements at respectively difierent intervals, the first.

of same being sufficient to. cause the head portions 23 and 24 to engagethe wire while leaving the other vise member, not shown,

out of engaging relationto the wire dis;-

posed between the head thereof and opposed portion of the head 23, these movements of,

said head being accomplished by means of, a

cam rotatable with. the gear, 7, as will be hereinafter more fully described, and as is fully described and claimed ,in my lastnamed aforesaid pending-application,

'From the foregoing it will be seen? that the wire is fed forward in a glven lengthfrom the coil at regular-intervals means of the segments 5 and that the wire thus passed forward is projected from the mem-' ber 19 through the guide 20, and the-forward end of the wire then passed between the j aws 23 and 24, which thereupon close upon said end ofthe wire and firmlyJhold the same. The object to be tied is, as will be hereinafter more fully described, contained within the said wire guide 20 so that the horseshoe shaped loop of wire formed by the guide 20 will be disposed around such object. The wire is now retracted by means of the retracting devices 3 so asto withdraw the loop of wire from the guide 20 and cause the same to closetightly about the "object.

The retracting meanscomprises, as aforesaid, the two members 3, each of which is a segmental gear.

the table 1, and the other of which is pivotally mounted on a stud 30 carried 'by'the reciprocable member 11. Both said mem bers 3 are equipped with wire-engagingsegments 31 similar to, but of less length than, the segments 5, and which are similarly equipped with wire-engaging faces rough-' ened to secure a positive hold on the wire."

One ofsaid members 3 is equipped with an L-shaped projection 32-carrying arod 33 on which a helical compression spring 34'is coiled, the'latter bearing at one end against:

an arm of a bell-crank lever pivotally mounted at its elbow on the member 11 and the other arm 36 of whlch is disposed in the path of a projection 37 carried by the said One of these is pivo-tally= mounted on a stud 29 rigidly mounted on gear Swhereby it is moved against the action. of the spr1ng34, thus compressing thelatter and causing itto rotate the said member-13 by. which it is carried. Said members 3 have-intermeshing gear teeth whereby they are caused to oscillate in. unison and the spring 34 thus determines the tension to be imparted to the wire retracted by said'members 3, as will be obvious. -The length of wire retracted will be determined primarily by the diameter of the object about which the, loopof wire. is .drawn, it being obvious that the sametension will be imparted to the wire about an object of smaller as'about an The said segments 3oscillatefreely and are drawn ,by thewire to the forward limitsof theirvoscillatoryimovement as'the wireis fed fo'rwaldby the segments5. 3 r

The said head 27 is provided with an an nular groove in whichanti-friction rollers in: the forked end of a rocking lever 37 e111- gage vsaid lever being pivotal-1y secured to a stud 38- on the table 1, and being providedwith a projection 39' carrying an anti-friction rollerengaged in the cam groove 30 in the, said gear? It willbe; seen that said-- cam-groove is provided at one point with two stepped portions &1 and 42 respectively,"

the 'retractionof the wire taking-place dur-- ing the time that the said antifriction roller; lsdlsposedi 1n the steppedportion i1, and,

as the same becomes disposed in the stepped portion 42, the aforesaid additional vise member, not shown, 15 thrown to engage the body of the wire between the-head thereof and, the opposed portion of the head 23.

Said wire is now maintained so clamped "at" two points until theanti-friotio'n' roller on said pro ection 39 passes into the stepped portion 230f said cam groove 40 whereupon the-visejaws are all returned to the position shown in F1g.,3,;the samebeing normally heldin such position by means of the compressionspring 414. 1 Y

The next operation taking place is that of twlsti'ngthe portions of the wiredisposed between. the objectand the vise jaws about each other to tie the loop formed about the object.- r This'is accomplished by rotating the head or sleeve 18 while the vise jaws are still engaged with the 'wire, and while the loop formed by the latteris engaged with the ob ject, as hereto-fore pointed out. The rotation of said head or sleeve 18 is effected means of the spur-pinion 45 rigid with the said head or sleeve 18, and which meshes with a spur-gear 46 on a shaft 47 journaled-in a bearing 48 carried by said table 1. The other end of the shaft 47 carries a bevel-pinion 49 which is adapted to mesh with the segmental bevel-gear 5O rigid with the spurgear 8 and which projects outwardly from the periphery thereof. The number of teeth of said segmental gear 50 and the bevel pinion 49, and the ratio of the spur gear 46 to the spur pinion 45, are such as to cause the said sleeve or head 18 to make a predetermined number of revolutions which, in the instance illustrated, is three complete revolutions for each revolution of the spur gear 8. The time or interval in which the rotation of said head or sleeve 18 takes place is so timed relatively to the interval in which the antifriction roller of the arm 39 is engaged in the portion 42 of greatest radius of the cam groove 40, as to cause said revolution of said head or sleeve 18 to be completed substantially simultaneously with the passage of said antifriction roller of said arm 39 out of said portion 42 in said cam groove and into the portion of least radius thereof, the latter constituting the main portion of said groove.

The next operation is that of bending the ends of the wire constituting the outer portions of the tie to form the key 51 which may be digitally engaged to untwist or open the loop, as clearly shown in Fig. 9. This operation also includes the severing of the tie, now formed and completed, from the body of the wire at the discharge end of the member 19. It will be observed that the vise jaw heads 23 and 24 are provided with coacting cylindrical projections 52 between which the wire is engaged, the body portions of said vise jaw heads being separated from each other by an open space. The said projections 52, are when the jaw members are closed in engagement with the wire, disposed in the path of dogs 53 carried by a laterally reciprocable plunger 54, the latter being fully described and claimed in my last-named aforesaid application. This plunger 54 is provided between its ends with an opening through which the said heads of the vise members project, the said dogs being supported midway between the upper and lower walls of said opening in a suitable manner. Each of said dogs consists of a small bell-crank lever pivotally supported at its elbow portion, and having its shorter arm projecting outwardly into engaging relation to the said projections 52, the longer arms being adapted to swing toward the object embraced by the loop as said shorter arms engage the said projections 52, as will be obvious. The said plunger also carries a wire severing edge or knife not shown in detail in the accompanying drawings, which is adapted to shear the wire at the mouth of the member 19. The said plunger 54 is connected by means of a link 55 with one end of a lever 56 pivotally mounted between its ends on the stud 38, and which is provided at its other end with an anti-friction roller 57 engaged in a cam groove in the lower face of the gear 7, the said cam groove 58 being illustrated in dotted lines in Fig. 4. The said groove is provided with two stepped portions 59 and 60, the first of which is adapted to throw the anti-friction roller radially outwardly from the axis of rotation of the gear 7 whereby the said plunger 54 is moved in one direction, and the stepped portion 60 being adapted to throw the anti-friction roller 57 radially inwardly a distance practically double the dis tance of its outward throw whereby to move the plunger in the opposite direction a distance sufficient to cause the other dog to bend the contiguous end of the wire tie immediately following the shearing of said end of the wire from the body thereof. This bending and shearing operation takes place just preceding the opening of the vise jaws 23 and 24 to release the wire, and the tie is then complete, and the operation aforesaid repeated'.

In order that the vise jaws may always resume and hold their normal positions be tween the intervals of rotation of the head or sleeve 18, the said spur gear 46 is provided with a recess 61 in which the head of a plunger 62 is adapted to engage to hold said spur gear against rotation, said plunger being held normally in engaging relation to the gear by means of a spring 68. The body portion 64'of said plunger is reciprocable in guides in the base of the standard for the bearing 48 as clearly shown in Fig. 7. Mounted at the outer end of said portion 64 of said plunger is an anti-friction roller 65 which is disposed in the path of a cam projection 66 formed on the inner face of the bevel gear segment 50, and which engages said anti-friction roller to withdraw said plunger from' engagement with said spur gear 46 just preceding the intermeshing of the said bevel segment 50 with the bevel pinion 49 and holds the same out of engagement therewith until the said intermeshing parts have passed out of meshing relation to each other, thereby causing the said plunger to spring into locking engagement with the spur gear 46 at the moment that the rotation thereof by said gearing has been completed.

lVhile the mechanism above described is not shown in as great detail as may be neces sary to a perfect understanding of the same, it will be understood that reference may be had to such details as are omitted from particular illustration, to the aforesaid .lastnamed copending application.

Having now described the first-named mechanism or mechanisms for manipulating the wire I will proceed to describe the coacting object-carrying mechanism associated with said wire-manipulating mechanism;

The said object-carrying mechanism is particularly adapted to receive and engage the puckered mouths of bagssuch as are used for packing cement, cereals, flour and the like, but may obviously be constructed to adapt the same to receive and carry objects of any other kind to be tied with wire, such for example, as milk bottles, jars, la-ths, dowel sticks, implement handles, and the like.

The said carrying mechanism is supported on brackets 67 mounted upon the frame supporting the table 1 and opposite the discharge end of the wire-feeding mechanism. Said brackets are connected together by means of a substantially semi-circular framepiece 68 and a cross-bar 69. Supported at one end upon the middle portion of the member 68 and at its other end upon the bearing for the rotatable head or sleeve 18 and between its ends upon the cross-bar69 is a member 70 which is provided between its ends with arecess 71 adapted to be closed by means of the cover plate 72. The said member 70 carries the bearing 73 for a spindle 74 which also extends through a sleeve 75 journaled in a bearing 76 on said member 72-. Said sleeve 7 5 is keyed or otherwise maintained rigid with said spindle'i'at so as to rotate therewith and is provided'at its lower end with an annularly enlarged flanged portion 77, the inner peripheral face of said flange being equipped with ratchet teeth 78. Rotatably mounted on said spindle 7% between the ends thereof is a spur.

pinion 79, the hub of which carries a disk 80' which fits telescopically within the said flange 7 7 of the sleeve 7 5 and carries a pair of spring-actuated pawls 81 adapted to engage the said ratchet teeth 78. The said spur pinion 7 9 rests upon the bottom of the recess 71 in the member 70 and meshes with the segmental gear 82 at the outer end of an arm or lever 83 which is pivotally mounted upon the inner end portion of the bearing for the sleeve 18. The said spindle 74: is supported at any desired elevationby means of the nut 81 engaging the threaded reduced upper end 85 of said spindle and resting upon a cap plate 86 loosely rotatable on the bearing 76, a ball-bearing 87 being provided within the annularly enlarged upper end portion of said bearing 76 for rotatably supporting the said spindlein a well-known manner. At its lower end said spindle carries a U-shaped guide member 88 having three radial hollow arms 89 in each of which there is reciprocably mounted a sleeve 90, the latter being suitably held against rotation therein. Each of said sleeves 90 carries a head 91 having a U- shaped arm, the upper end portion of which is equipped with a projection 92, and is also equipped with a pair of outwardly extending arms 93 bordering a recess, which is substantially semicircular, in which the object to be tied" is adapted to be received. A. spring 94 bearing at one end against the hub -of said member 88 and at its other end 'against the portion of the head 91 engaged in the sleeve 90 maintains said sleeve normally at the outer limit of its movement relative to the arm 89in which it is recipro cably mounted.

Associated with each of said heads 91 and sleeves or arms 89 are means adapted to coact with the arms 93 for engaging an object to be tied, said means comprising a pair of arms 95, each of which is pivotally secured at one end by means of the bolts 96 upon one of said arms 89 at opposite sides of the horizontal plane of its axis, said arms terminating at their outer ends in converging projections 97 adapted to coact with the recess bordered by the arms 93" for providing a substantially circular opening through which the object to be tied, such as the-puckered mouth of a bag, is adapted to extend, iLIlClLili which it is firmly held during the tying operation. Each of said arms is provided with an outwardly extending projection-98 providedwith a perforation into which a rod 99'projects, the latter being pivotally secured at its other end to the end portion. of a side flange 100 vintegral with the sleeve. or arm 89. Helical compression springs 101 are coiled about said rods 99 and serve to normally maintain the said arms 95 disposed in closed position asshown in the left-hand side of Figs. 10 and 11. Said arms 95 are also provided on their inner .or opposed faces or edges with projections 102, each of which has that face 'opposing thepivotal axis of the arm disposed at'an incline to the side edge ofsuch arm so that the two edges of the opposed pair of projections 102 together constitute a slightly V-shaped surface which is adapted to engage in a similar recess 108 in the forward edge of the projection 92 of the head 91, when the latter is disposed to engage an object of the smallest periphery which the machine is adapted to tie, and which constitutes stops to limit the forward movement of said head 91 to engage an object between the head 93 and the arms 97. Integral with the hubsof said arms 95 are intermeshing gear segments 104 which cause them to swing in unison in respectively opposite directions. One of said arms is further PIOXlClGCl with an inte gral projection 105 carrying an anti-friction roller 106 adapted during the rotation of the member 88 to engage a cam 1'08 for opening the arms '95 against the action of said springs 101'. Said cam 108 is carried by the member 70 and. is rigid therewith, and is disposed in proper position in the path of said anti-friction rollers 106 for releasing and engaging the same at proper points in their travel to perform the aforesaid functions synchronously with relation to the operations of the tying mechanism.

Each of said arms 95 also carries one member 109 of a wire guide or wire-bending device, the latter being practically horseshoe-shaped or V-shaped and comprising two equal parts adapted to contact and register with each other at their middle portions to provide a continuous structure, and which is provided with a channel of the same shape intowhich the wire is adapted to be projected at one end to be bent in passage therethrough to surround or partially surround the object to be tied which projects through said wire guide, and from which the wire is adapted to be drawn tightly about such object upon the operation of the wire-retracting mechanism heretofore de scribed. Said wire guide may be variously constructed, but as shown in Figs. 6, 7 and 8 it is shown as constructed and operated substantially as shown and described in my aforesaid application for patent, Ser. No. 84 .98% that is to say, the lower members of each of the parts 109 of said guide are rigid with the arms 95, while the upper or cover-plate members of said guides are hinged to said lower parts so that the pivotal axis is substantially parallel with the straight portion or arm of the lower member, and is held to normally rest upon the lower member by means of a spring 110. as clearly shown in Fig. 6. The wire loop is withdrawn from said guide by the retracting mechanism against the action of said springs 110, that is to say, it is practically forcibly sprung out of the guide against the action of said springs.

Associated with said carrier, as clearly shown in Fig. 2, is a slotted guide member 111 in which the mouth portion of a bag is adapted to be received and supported, the same being moved by hand through said guide slot until one side edge portion of the bag projects into the recess bordered by the arms 93 of the head disposed in alinement or receiving relation to said guide 111. Pivot'ally mounted upon one of the brackets 67 is a lever 112, the outer end portion of which is adapted to swing through an arc inte1-- sected by the guide slot of the member 111, said arm being adapted to engage the outer edge portion of the bag and, as it turns on its pivot. is adapted to force the mouth portion of the bag into the aforesaid recess hordered by the arm 93, thereby also puckering the same and exerting a sutficient pressure upon the said puckered portion of the bag to force the head 91 inwardly against the action of the spring 94. It will be seen that the inner ends of the projections 102 bear against the side edges of the projection 92 the latter being the spring 9-1 the said projection 92 will pass inwardly out of the path of said projections 102 thus permitting said arms 95 to move into closed position thereby causing the arms or projections 97 to close the recess bordered by the arms 93 and prevent the escape of the object therefrom, the head 91 being now held at an inner point in its movement by the object, the latter being thus compressed between the head 93 and the projections 97.

The said lever 112 is connected at its other end by means of a link 113 with an arm 11% of a member which also carries the aforesaid arm 83 andcarries an additional arm 115, provided at its outer end with an anti-friction roller adapted to engage in the cam groove 116 on the gear 8. said cam serving to rock said arms 83 and 11% simultaneously. It will be seen by ref erence to Fig. 2 that as the lever 112 is rocked or swung in the direction to force an object into engaging relation to the bag carrier, the said arm spur pinion 79 in a direction. in which the said dogs or pawls 81 are adapted to pass freely over the ratchet teeth 78 so that during this movement of said arm 83 the said member 88 will be retained in a fixed position, but upon the rocking of the arm 83 in the opposite direction the spur pinion '79 will be turned to cause the pawls carried thereby to engage said ratchet teeth to impart a rotary movement to said head 88 through an arc of one hundred and twenty degrees, thereby causing the object fed to said carrier to be moved into position relative to the tying mechanism to be tied. The said member 88 is held rigidly in position during the first-named movement of the arm 83 and lever 112 by means of a locking device illustrated in F 5, which consists of a bell-crank lever ll'Twhich is pivotally secured to the cap portion or member 72 at its elbow portion and is provided at the end of its longer arm with a projection 118 adapted to engage consecutively in the three several openings 119 in the flange 77 of said sleeve 7 5, the shorter arm 120 of said bell-crank lever being disposed in the path of a projection 121 on said arm 83, so

that as the latter rotates the spur pinion 79 during the feed movement of the lever 112, the said projection 121 will strike said arm 120 to cause the projection 118 to be withdrawn from the opening 119 in which it is then engaged and to be held out of engage- 83 is swung to turn the.

ment therewith. .Asfsoon as the said arm 83 begins to make its return movementthe said pawls carried by the spur pinion 79 will engage the ratchet teeth so as to immediately rotate the member 88 thereby causing the opening 119 in which said projection 118 was last engaged to move out of the pathof said projection, so that by the time the latter has returned to its no'rmal'position by the releaseof engagement of the projection 121 therewith it will merelybear upon the outer circumferential wall ofsaid flange 77 and will spring into the next succeeding opening 119 as the said member 88 completes its movement through thefisaid arc of one hundred and twenty degrees. Upon the completion of each of said movements of said member 88, one of the said wire guides or wire-bending devices will be brought into register with the discharge opening ofthe member 19 so that the avire projected through the latter will enterthe opposing mouth ofsaid wire; guide thereby causing the loop of wire to pass around the object preparatory to being drawn around the same by the retracting,mechanism,V as will be readily understood. The tie is then'com: pleted, as previously described, and the carrier then rotates again through an arc of one hundred and twenty degrees, and during this rotation the obj cot-engaging mechanism of the carrier now carrying the tied object is released from engagement with the latter by the engagement of the anti-friction roller 106 of one of its arms 95with said c'am 10S, thereby causing the object tov be ejected therefrom. The said obj ectengaging mechanism now remains open untilit again'becomes disposed opposite the feed slot of the member 111 and receives another object.

. In connection with the tying and .bagcarrying mechanismsofthe present machine I also prefer to employ the means for automatically throwing the wire-feed mechanism" into'engaging relation wit-h the wire to be projected, onlywhenE an object ispresente'd bythe carrying mechanism tothe wire-tying mechanism -to be tied. This mechanism is fully described and claimed in'the aforesaid application of E. V. Nessling, and consists of the aforesaid lever 1% which is equipped contiguous to its.pivotaliconnection with the plate 11 with the camfmember 15 adapted to engage an associate member 16 for movingthe plate 11' outwardly against .the ac tion of the-springs 13' when said lever is moved to the forward limit of its movement. It is held in-thisposition normally by means of a helical tension spring .and thus maintains the wire-engaging mechanism of the tying machine out of engaging relation tothe wire and is moved against the action of said tension spring to the posi tion or substantially the position shown in Fig. 4, by the object presented by; the carrier to be tied; thereby causing said wire-feedin'g mechanism to be moved by the springs 13 into engagingrelation with the wire and causing the latter to be fed to tie the object. It will be understood, of course, that this leverand the mechanism last-described 0011- stitutes no part of the present invention.

v The object-engaging devices on the bagcarrier may also be constructed as shown in Figs. 12 and 13 in which the member 122 corresponding to the member 88 is provided with a fiat annular flange 123 upon which there is rigidly mounted a plate 124: carrying the wire guide 125 which consists of a single inseparable substantially horseshoe shaped piece of metal having a wire guide groove 125 in its concave face.- Said plate 124; is provided midway between its side edges with a guide-slot 126 in which the guideshoe of the plunger 127 is longitudinally movable, the latter being equipped at 'its' outer end with a projection 128 in which a rod 129'is mounted, the latter projecting at its other end through the projection 130 on a plate 131 mounted on the studs 132. The latter constitute the pivots of opposed object-engaging members 133 corresponding to the arms 95 in purpose and general features of'construc-tion'. Said arms are main tained normally in the position shown in Fig; 12 by means of a spring 134: engaged at the outer ends ofits arms with the outer end portions of the arms 133, and-which is provided with two coils through which said studs 132 pass. A compression spring 135 carried by the rod 129 maintains the plunger 127 normally at the forward limit of its movement, the forward end portion of the same normally overhanging the middle por tion of the guide 125 andbeing thus in the path of the object. 7 Said plunger is adapted to be forced baclr to the position shown in Fig. 12 against the action ofsaid spring 135 by pressure exerted thereon by the object received within said wire guide 125 as said ob j ect is forced into the latter by the lever 112 and thus permits the obj cot-engaging members 133 to close to retain said object within the said wire guide 125. Said members 133 are provided with projections 136 which enter the recesses in opposite sides of said plunger 127 when said members move to closed position, and which engage the side faces 137 of said plunger when the latter is disposed at the forward limit of its'movemen-t. p e

The aforesaid wire-guide member 125 for bending the wire to loop formation around the object may also be made as shown in Figs. 13 and 12, reference to which shows that the said guide is made of a substanti-ally cylindricalrod provided witha continuous recess 138 having an open mouth portion through which the wire may be easily withdrawn. The straight end-pon tions of this groove 138 have their upper walls cut away and are overhung by fiat springs 139 which are secured at one end each to the plate 124 and rest at their free ends upon the bottom walls of said groove; the ends of said springs being equipped with lips 140 which are adapted to be sprung up by the wire as the latter is drawn out of the said groove by the action of the retracting 10 mechanism. I

The operation of the machine will be readily understood from the foregoing description, and a review of the same is therefore deemed unnecessary.

I claim as my invention:

1. In a machine of the kind specified, a traveling carrier for objects to be tied, object-engaging devices carried thereby, a wire bending element associated with each of said devices, means for feeding wire longitudinally carried by a rigid part of the machine, said bending meanscoacting with said feeding means for looping the wire about the object.

2. In a machine of the kind specified, a

traveling carrier for objects to be tied, 0bject-engaging devices carried thereby, a wire guide associated with each of said devices, means for feeding wire longitudinally carried by a rigid part of the machine, said wire guide coacting with said feeding means for looping the wire about the object.

3. In a machine of the kind specified, the combination with mechanism for feeding wire longitudinally at predetermined intervals, of a traveling carrier for objects to be tied adapted to present objects successively to said feeding means, object-engaging devices on said carrier, and means associated with each of the latter for causing the wire fed to form a loop about the object to be tied.

4. In a machine of the kind specified, the combination with mechanism for feeding wire longitudinally at predetermined intervals, of a traveling carrier for objects to be tied adapted to present objects successively to said feeding means, object-engaging de vices on said carrier, and a wire guide as sociated with each of the latter for causing the wire fed to form a loop about the object to be tied.

5. In a machine of the kind specified, the combination with mechanism for feeding wire longitudinally at predetermined intervals, of a traveling carrier for objects to be tied adapted to present objects successively to said feeding means, objectengaging devices on said carrier, and a wire 6 guide associated with each of the latter for causing the wire fed to form a loop about the object to be tied, the latter provided with an open wire-receiving groove from which the loop of wire is adapt-ed to be drawn without distortionthereof.

6. A machine of the kind specified, including wire feeding mechanism, and a carrier for objects to be tied, means for imparting intermittent movement to said carrier at regular intervals corresponding to the intervals of activity of said wire-feeding mechanism, object-engaging means onsaid carrier, mechanism for feeding objects thereto during the intervals of rest of said carrier, locking means for maintaining said carrier immovable during said intervals, and means for releasing said locking means preparatory to movement of said cc rrier.

7. In a machine of the kind specified, an object-carrier, and object-engaging mechanism carried thereby including a reciprocable member spring-held to resist entrance of an object into engaging relation to said mechanism, {coacting object-retaining elements adapted to prevent ejection of the object by said reciprocable member, mechanism for forcing the object against the latter and into engaging relation to said object-retaining elements, and means for effecting movement of the latter out of engaging relation to the object for ejecting the latter.

8. In a machine of the kind specified, an objectcarrier, and object-engaging mechanism carried thereby including a reciprocable member spring-held to resist entrance of an object into engaging relation to said mechanism, coacting object-retaining elements adapted to prevent ejection of the object by said reciprocable member, springs normally holding said elements in engaging relation to the object, mechanism. for forcing the object against the latter and into engaging relation to said object-retaining elements, and means for effecting movement of the latter out of engaging relation to the object for ejecting the latter against the action of the springs holding the said elements.

9. In a machine of the kind specified, an object-carrier, and object-engaging mechanism carried thereby including a reciprocable member spring-held to resist entrance of an object into engaging relation to said mechanism, coacting object-retaining elements adapted to prevent ejection of the object by said reciprocable member, projections on said elements adapted to abut against the sides of said reciprocable member when the latter is in its normal position and adapted to be disposed in the path of the same when it is disposed at the inner limit of its movement, mechanism for forcing the object against said reciprocable member to force the latter toward the inner limit of its movement whereby to permit said retaining elements to move into engaging relation to the object, and mechanism for moving the said elements out of engaging relation to said object and to position to permit said reciprocable member to spring forward to eject said object.

10. In a machine of the kind specified, an object-carrier, and object-engaging mechanism carried thereby including a reciprocable member spring-held to resist entrance of an object into engaging relation to said mechanism, coacting object-retaining elements adapted to prevent ejection of the obj ect by said reciprocable member, projections on said elements adapted to abut against the sides of said reciprocable member when the latter is in its normal position and adapted to be disposed in the path of the same when it is disposed at the inner limit of its movement, mechanism for forcing the object against, said reciprocable member to force the latter toward the inner limit of its movement whereby to permit said retaining elements to move into engaging relation to the object, springs for normally maintaining said elements in the last-named position, and mechanism for moving the said elements out of engaging relation to said objects against the action of said springs, and to position to permit said reciprocable member to spring forward to eject said object.

11. In a machine of the kind specified, the

combination with wire feeding and tying mechanism, of an object-carrier provided with a plurality of object-engaging mechanisms each including a wirebending element adapted to be presented successively to said wire-feeding mechanism, and means associated with said bending element for holding the object in position relatively thereto to cause the loop of Wire bent thereby to be formed about the object.

12. In a machine of the kind specified, the combination with mechanism for projecting a length of wire, of an object-carrier equipped with a plurality of object-engaging mechanisms, each of the latter including a wire bending guide-member in which the object is adapted to be received, said guide member having an open wire-guide channel having its mouth opposing the object and adapted to bend the wire into a loop about said object, mechanism for effecting withdrawal of the loop of wire from said channel to draw the same tightly about the object, and means associated with the first-named mechanism for tying the loop and severing the same from the body of the wire.

13. In a machine of the kind specified, an

obj cot-carrier equipped with obj ect-engaging v mechanlsm including a reciprocable member spring-held at the outer limit of its movement, a pair of laterally movable members adapted to be moved simultaneously toward and from each other and spring-held at the inner limit of their approaching movement, projections on the said member normally opposing the said reciprocable member and coacting with the latter to clamp an object, and mechanism for opening said laterally movable elements, whereby to efi'ect release and ejection of the object.

14. In a machine of the kind specified, an object-carrier equipped with object-engaging mechanism including a reciprocable member spring-held at the outer limit of its movement, a pair of laterally movable members adapted to be moved simultaneously toward and from each other and springheld at the inner limit of their approaching movement, projections on the said member normally opposing the said reciprocable member and coacting with the latter to,

clamp an object, means for inserting an obj ect between the said laterally movable mem-' bers against the action of said reciprocable member, and mechanism for opening said laterally movable elements, whereby to eifec release and ejection of the object.

15. In a machine of the kind specified, an object-carrier equipped with object-engaging mechanism including a reciprocable member spring-held at the outer limit of its movement, a pair of laterally movable members adapted to be moved simultaneously toward and from each other and spring-held at the inner limit of their approaching movement, projections on the said member normally opposing the said reciprocable member and coacting with the latter to clamp an object, means associated with said reciprocable member for holding said laterally movable members at the outer limits of their movement, means for inserting an object between the said laterally movable members against the action of said reciprocable member whereby to move said means to permit closure of said laterally movable members, and mechanism for opening said laterally movable elements, whereby to efiect release and ejection of the object.

In testimony whereof I have signed my name in presence of two subscribing witnesses.

ROGERS M. WARWICK.

Witnesses: V V

GEORGE I. KHEIVALLA, M. M. BOYLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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