US2624375A - Wire tying machine - Google Patents

Description

K. E. SCHULZE WIRE TYING MACHINE Jan. 6, 1953 2 SHEETS-SHEET 1 Filed Nov. 29, 1948 INVENTOR. KURT ER/G SGHULZE y an ATTORNEY 1953 K. E. SCHULZE WIRE TYING MACHINE 2 Sl-IEETSSl-1EET 2 Filed Nov. 29, 1948 INVENTOR. KURT ERIC SGHULZE ATTORNEY Patented Jan. 6, 1953 STAT PATENT 1 2,624,375 7 WIRE TYIN G MACHINE Kurt EficSehuize, San Francisco, 'Caili'L, assignmto Ernest Roe, :doing business as Coast Wire Company, ZSan Francisco, Calif. Application November 29, 1948, Serial "No. 62544 (Cl. bill-93) "This invention relates to wire tying machines, and more particularly to wire tying machines of the character "designed to secure a fiat wire or band around a box, package, bundle, 'or the like, to 'form a smooth tie.

it-principal object o'f the "present invention is "to iprovide a machine for tightening and securingawire'orband'around-acontainer, or thelike, and particularly fiat wire, by twisting "the ends of 'a-strand 'Of 'seiid wire together to form a tie and wherein the iagged ends of said wire so twistedtogetherto"formn "tiedo not proj ectabove the tiebut are disposed underthe twisted 'por tlon oT-Jthewire and lie flat againstand nex'trto theobject tied. Thus, person's handling "a package jtiedwith the wire are notinjured by contact with the jagged ends of the wires. Further, the tie is "securely "fixed and thus "secured not 'afiected by rough handling 'or impact "with the .jagged ends "which "might otherwise be the ease ii. thezsheare'd or jagged ends protruded above 'thetie.

The present invention "is in the nature of a continuation in part oi "my 'copending "application .Serial No. "701,530, filed October 5, 1946, for Wire Tying Machine, which matured in-Uh'ited State's l atent"2,460,-346;patented'Februai-yii, 1949.

Referring to the drawings:

Figfil is a top plan view oi the wire "tying machine-embodying the present invention.

'is an exploded view til the preferred The machine may comprise anysuitable structure oi the general character disclosed inU-nited States "Letters Patent 'No. 1,545,407, issued -.'Juiy 7,192?) to C.'L.-"Drew et-al, whidh comprises gen erally, a portable tool constructed to rest'ona package, or the like, to be strapped/and provided with means for twisting togetherthe "wire to form a tie, and'means for cuttingoff the ends of the "wire extending beyond the tiexand asingle operating lever. "Movement of the lever'irom its normal position serves to tighten the wire and movement of the "lever in a reverse direetion serves to tie the wire and then cut the-end per tions th'ereo'f.

'The present invention is preferably :a machine of theeharacter above menticnedprovidedwith improved w-iregripping means, wlre cutting'mem- .iorminf wire cutting members, guide members and twisting gear.

Fig.fdise sidezelevational view of'the wire-cue ting'maolnneembodying the present invention.

Fig.=4 is an:=exploded viewof the preferred iform j Y bers and-wire guiding members 'of the character described in my heretofore mentioned :appliea-" ti'on Serial No. 701 ,530 and :also in my :copendin g application for United States Letters Patent rior Wire Tying Machine, Serial :No. 3233,2536, fliled March "8, 1947 now Patent12;580,848 issueii January "1, 1952. Y

-Essenti'ally, the machine comprises an operating handle :2, adapted to :be :moved "forwardly from the neutral position, indicated in Fig, 3, toward the "tying end :of the machine, indicated at A. Forward movement :of "the handle 2 causes cam '3 to rotate in the direction :of the narrow (Fig. "'3') ,thereby causing pivotallymounte'd arms tend- 5rtomovelaterallyawayzfrom thermaohine, which, whenithewire isipositioned properlyiin the machine, causes Kthewire to :be tightened around the packageito be tied. Movement-of 'theihantlle 2 in areverse directioneauses rotationo'fthezmain actuating 'gear 1 which in :turn iimparts'n'otaitive f movement i'bO the wire atwisting-ggear 18, providedgripping and twisting elements and illustrating the tie prior to-cutting an end of the wire being I tiedi Fig. 8 is an illustration similar to Fig. '1 rand illustrating the cutting action of the right hand 7 cutting members. i

Fig. 9 is a view similar to Figs. 7 and .8 and showing the comple'ted tieand wherein the cut ends of "the wires are disposed under the tie.

with 1a rwir'e receiving shit i], which, when the, wiretis nositionedtproperlyin the machine causes the tie to be formed by twistingitogether strands of wire :positioned therein. (Further :movement of :theihandle 2 to the position-shownin zdotten linesfin Fig.1 actuates the wire cutting members.

The wire :gripping :means preferably comprises a ileftwire gripper ilil and aright *gripper :12 oi. the type illustrated and described i in my rcope'nd ing "application heretofore Zmentioned serial No. 733,296, althoughfitiis to be understood that any suitable zgrippers may be utllized' with therprese'nt invention.

'EIZhe cutter members and the guide members are-preferably of thencharacter disclosed in my copending application Serial No.-701,530 hereto fore-mentionedtso far-as the wire receiving .-portions thereofare concerned. I

As illustrated herein, a left cutter member 2| is disposed adjacent to the left guide member 22 and a right cutter member 3| is disposed adjacent to a right guide member 32. As fully set forth in my copending application Serial No. 701,530, relative rocking movement of member 3| relative to member 32 produces a scissors action between adjacent said members to shear or cut the ends of wires disposed therein in cutting position.

As has been hereinabove pointed out, it is advantageous to position the sheared ends of the cut wire under the tie. With this end in. view, a means is provided to shear one end of the wire disposed around the package to be tied before the other end is sheared; and in the interim between cutting the first end and prior to cutting the second end of said wire, the first sheared end.

bands, that the wire cutting means must provide for thewires to be positioned in vertical alignment, whereby the end portions of a wire which lead to the grippers are retained in substantially vertical alignment with that part of the wire encircling the object to be tied. This result is accomplished by providing a lurality of wire receiving portions in one member of each pair of members which coact, to guide and cut the ends of the wire. It is necessary to maintain the portions of the wire heretofore mentioned in substantial vertical alignment rather than place them side by side, as may be done when working with round wire, because of the fact that round wire may be bent in any direction without any greater or lesser degree of distortion or tension, whereas, obviously, fiat wire, when bent in a lateral direction, i. e. in the direction of its greatest width, causes serious distortion which may result in rupture and weakening of the wire. It follows from the type of wire guide and cutter members utilized in the present invention that one end of the wire to be out after formation of the tie would be disposed above or at least at the horizontallevel of the top of the tie while the opposite end would be disposed under the tie.

The-present invention, as hereinabove stated, provides for means to cut one end of the wire and then twist the cut end under the tie, at which time the other end is cut, thereby positioning both out ends below the said tie.

The movable members or cutter members 2| and 3| are each provided with rearwardly extending shanks 34 and 35 and stops 35 and 31, respectively. The shank-s 34 and 35 terminate in strike portions 43 and 44 which are arranged to contact pads 42 and 4|, respectively. The pads are carried by the clevis portion 45 of handle member 2; and which said clevis straddles the cam 3 and main actuating gear 1 and the said pads are in operative alignment with the said strike portions 43 and 44 so that when the handle is operated to the dotted line position shown in Fig. 3' the pads thereupon urge members 2| and 3| forwardly to cut the ends of the wire disposed in the wire receiving portions thereof. The pad 4 42 (see Figs. 5 and 6) is enlarged or extended forwardly relative to pad 4| (Fig. 6) so that pad 42 contacts the shank 35 of member 3| before pad 4| contacts the strike portion of shank 34 of member 2|. Pad 42 urges said member 35 forwardly to operative cutting position before pad 4| is in operative contact with the shank -44 of member 2|. Thus, the end of the wire to be sheared by member 35 is out before operative cutting movement occurs with respect to member 2 I.

It is obvious that rather than to provide for different relative sized pads 4| and 42 it may be desirable simply to extend shank 35 rearwardly further than shank 34 so that pads of equal size, carried by the clevis 45, will contact an enlarged shank 35 before contacting a relatively smaller shank 34 in order to urge member 3| forwardly before member 2| is urged forwardly.

. Referring now to Figs. 2, '7, 8 and 9, the end 5| of the wire which leads from the left hand gripper is disposed in the lowermost wire receiving portion or slot 6| of member 2|. This portion 6| may be termed the wire cutting portion. The end of the wire 5| disposed in wire receiving portion 5| is thenfed through member 22, thence through the slotted gear 9, thence below member 3| through wire receiving portion or slot 62 of member 32 around the article to be tied, indicated generally at K. The wire receiving portion 62 of member 32 may be referred to as the guide portion of said member 3 After encircling the article K, the wire is then led through wire receiving portion or slot 63 of member 2 I ,which said portion may be referred to as the guide portion of member 2|, thence through members 2 2 and 9 under member 3| and through wire receiving portion or slot 64 of mem-.

her 32. The wire receiving portion 64 may be ref ferred to as the wire cutting portion of member 32. The end 52 of the wire passing over portion 54 is then led to the gripper l2.

Thus, it is seen that the ends 5| and 52, which are to be cut, are disposed through the cutting portions of the members having a plurality of wire receiving portions, and the wire 52, before it is cut (Fig. 7), occupies a position above the part of the wire strand which encircles the object K, i. e. it lies atop the tie and not thereunder. I Fig. 8 indicates the position of the parts after end-52 has been cut but prior to cutting of end 5|. After end 52 has been severed by the move: ment of member 3|, the twisted portion of the tie on the right side of the machine, indicated at 54,

' is enabled to rotate upon rotation of the gear 9 to thus place the sheared end portion 55v of the wire under the twisted portion 54 of the wire by the time member 2| has been actuated to cut wire end'5l. E

Fig. 9 illustrates the portions of the sheared wire ends at the completion of the tie; 'It is noted that movement of the operating handle and associated parts causes rotation of the gear 9 duringthe interim between actuation of member 3|:

through contact'with pad '42 and movement of member 2| through contact with pa-d 4|, andthus, the severed end 55 is rotated 180 from the position of Figs. 7 and 8 to the position of FigsB, as aforesaid.

I claim: 1. In a wire tying machine for tying the ends of wire encircling an object said machine having a wire twisting gear, a first wire gripper for gripping one end of said wire, a first wire cutter located between said firstgripper and one end of said wire twisting gear, a first means located adjacent said first wire cutter for maintaining the end portion of the wire which leads to the first gripper in substantially vertical alinement with that part of the wire encircling the object to be tied with said end portion above same encircling portion, a sec-ond wire gripper for gripping the other end of said wire, a second wire cutter located between said second wire gripper and the opposite end of said wire twisting gear, and second means for maintaining the other end portion of the wire which leads to the second gripper in substantially vertical alinement with that part of the wire encircling the object to be tied with said end portion below said encircling portion, the improvement in means to rotate said gear and to operate said wire cutters in timed relationship, including means, firstly, for rotating the wire twisting gear ,a plurality of turns, means, secondly, for operating said first wire cutter, means, thirdly, for

rotating said wire twisting gear an additional 180 degrees and means, fourthly, for operating said second Wire cutter whereby the wire is twisted, the ends are cut and the cut ends of said wire are disposed beneath the twisted portion of the wire.

2. A wire tying machine for tying the ends of wire encircling an object, said machine having a wire twisting gear, a first wire gripper for gripping one end of said wire, a first wire cutter located between said first gripper and one end of said wire twisting gear, a second wire gripper for gripping the other end of said wire, a second wire cutter located between said second wire gripper and the opposite end of said wire twisting gear, means, firstly, for rotating the wire twisting gear a plurality of turns, means secondly for operating said first wire cutter, means, thirdly, for rotating said wire twisting gear an additional 180 degrees and means, fourthly, for operating said second wire cutter whereby the wire is twisted, the ends are cut and the cut ends of said wire are disposed under the twisted portion of the wire.

KURT ERIC SCHULZE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,545,407 Drew et al. July '7, 1925 1,682,015 McChesney Aug. 28, 1928 2,018,177 Kruft Oct. 22, 1935 2,111,115 Gibbs Mar. 15, 1938 2,265,321 Smith Dec. 9, 1941 2,460,846 Schulze Feb. 8, 1949

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