US2443470A - Bundle tying machine - Google Patents

Description

June 1948- J. J. ML. MARCHAND BUNDLE TYING MACHINE 2 Sheets-Sheet '1 Filed Dec. 15, 1942 III , INVENTOR JEAN fox/w Mm r/n/ ZAMBl-R rMmc/mwa ATTORNEY June 15, 1948. J. J. M L. MARCHAND 2,443,470

BUNDLE TYING MACHINE Filed Dec. 15, 1942 2 Sheets-Sheet 2 INVENTOR J- 1: .Q: T a 4 A. mm MMflmlAMA'ERT Meal/M0 ATTORNEY Patented June 15, 1948 PATENT I OFFICE BUNDLE TYING MACHINE 1 Jean Joseph Martin Lambert, Marchand, The Hague, Netherlands; vested-in the Attorney General of the United States 7 Application December 15, 1942,seria1 No. 469,105

a In GermanyMay 16, 1941 Section LPublic'LaW 690, August 8, 1946 Patentexpires May16,'1961 4 Claims. 1,

The invention relates to an-impro-ved machine for tying a bundle of letters, books or like documents or for binding one or more other objects, of the kind as described in the prior U. S. A. Patent No. 2,198,440. This prior'machine comprises a member in the form of a tying ring, intermittently rotatable always in one and the same direction during a tying operation and a clamping device mounted on said ring, which-seizes the primary end of a tying-medium from arevolving support and pulls it around thearticles to be tied. Furthermore means'are provided for firmly connecting the adjacent parts of the tying-medium'by means of a metal clip, which parts are laid together in overlapping position after the wrapping.

An important object of my invention particularly consists in the perfection of a machine of the kind as mentioned in such way as to enable the machine to satisfy all requirements of ordinary practice, particularly with regard to the tyingmedium.

One feature of the present invention resides in the provision of an adjustable brakingarrangement by means of which the tension of the tyingmedium, gripped by the clamping device on the tying ring, can be accommodated to the strength, stiffness or to other properties of the material of said tying-medium, and in the provision of doubly adjustable means to accommodate also the extent of deformation of the metal connecting clip to the properties of the tying medium.

According to the present invention the tyingmedium, coming from a bobbin, before it is led further to the revolving support, passes along a stationary abutment, against which abutment it is pressed by means of a spring-pressed brake-lever, pivoted on aflxed point. The braking action of said lever can be varied by connecting the spring to the lever at various distances from the fixed point of rotation. In this way the tension of the 40 tying-medium may be accommodated to the flexibility of the material used for said medium.

According to another feature of theinvention means are provided to equalize the deformation and the size of the connecting clip to the thickness or thetying-medium. For that purpose, the sliding matrix, which effects the deformation of the clip in co-operation with a stationary abutment, is moved by means of a lever system actuated from a cam shaft. The system comprises a toggle lever,

one arm of which is pivotally connected to the sliding matrix, whereas the other is pivoted in a fork. which is adjustable in the direction of the sliding movement of the matrix. Furthermore a lever, directly moved by'the cam shaft and acting 10; sliding matrix, situated opposite to the-stationary} abutment is provided with a semicircular groove,

said groove being interrupted over a given length in'the' middle by a recess of greater depth transversely of the groove. "A matrix'soconstructed eration of the machine with such tension as may 25; ber equire d by the kind of material used for the tying m edium and at the same time to make the-con'ne'ction of the ends by the tying-medium by the metal clip more or less tight, according to r the material of tying medium.= In consequence, 5-. various materials may be used for the tying-medium, thatis, the medium maybe thin or thick, and for relatively stiff or relatively flexible material. .Thus ordinary paper, rolled or twined in the. form ofa string; may be used and tied around the the 351i bundlewith the .same effect and in exactly same-manner as other string.

Other advantages-and features of inventionwill be apparent in the following description. of' a preferred embodimentof the invention illustrated in theraccompanying. drawings, in which similar reference characters represent corresponding parts in.-all the views.

- Fig.1 is a vertical sectional'view showing the braking arrangement for the passing tyingeme- Fig5-2 is a fragmentary vertical sectional view showing the adjustable mecha'nismior the sliding movementof the matrix, when forming the metal connecting clip. For the sake of clearness 503's0me of the principal parts. of the machine are.

shownin both'figuresalthough they do notre late 'directly'to the invention.

Fig. 3' isa fragmentary view of the matrix head 34 of Fig. 2. 1

16 provides projecting teeth at both sides of said recess, and each tooth has a portion of said semi-. circular groove extending transversely thereofi Fig. 4A is an isometric view of said matrix head.

Fig. 5 illustrates a side and an end view of a compressed clip.

Referring to the drawings, I indicates that part of the tying ring, that is located beneath the table 2, which ring rotates above said table in the guard casing 3.

with the toothed rim on the. outerperipheral edge of the tying ring. Onthehollow shaft the revolving support 1 is secured. The pulleys 8 and 9 are provided for the purpose of guiding the tying-medium. In Figural thetpath of i said tying-medium from the bobbin H] up to the ring I is clearly illustrated.

such as a string 12, is drawn off from the bobbin The driving toothecl wheel 4 is mounted on the shaft 5 and'engages of movement of the matrix as well as transversely to this direction. For this purpose the system is provided with a toggle-lever 21,, 28, one arm 28 of. which is pivotally connected to the matrix' 23,-and the other arm' 2'l'is1pivotally connectedto a fork 29. Said fork is internally threaded for the reception of a threaded portion on one end of a set bolt 30. The other end 'oi'bolt 3s projects through the frame and has a According to the invention, the tying-medium,

lock nut mounted thereon. By turning the bolt 313, the fork-29 can be adjusted over a given distance ina'horiz ontal direction. When the fork is adjusted toward the right or left in Figure 2, the matrix 23is moved in the corresponding direction. =An adjustment of the fork 29 to the leftincreases the distance between the matrix 23 and the abutment 24.

I0 and passes through an opening in the frame member II, and through a slot in a brace I3, fixed to the: frame, from whence the string passes overthe pulleys 8, 9,:8 andthrough the hollow shaft 6 up to the recess of the support 1, in which the end of the string-is clamped between the blade spring l5 and the end of support I. The blade'spring is adjustable by means of a setscrew M. In the brace I3, the string is frictionally pressed against the flat inner side of the bra ceby means of a brake-1ever-I6, pivotable at i-I- onafixe'dpoint and provided with a pressing-pin l8,.-1ocated at oneside of the string l2. Ahelical spring [9 is connected at one end to theleverl6 and at its otherend to a fixed point on the framemember. springlQ-the lever withitspin I8 continuously presses the string against the sidewall of the brace,--in such way thatit frictionally brakes said string during the wrapping. The free portion of the lever l6 isprovided with a number of holes 120, equally spaced along its length. When the end of the spring i9 is connected to one of the-upper holes, the effective part of the lever: is increased for the braking action. In this way! it is possible to adjust the braking force and thereby the resulting tension of the string beyond the brace according to the thickness, strength or; other properties of the tying medium used.

The guiding pulley 9 is mounted at the'end of a lever zl, which lever is pivoted on the machine frame and is tensioned by-aspring'zla in a direction-to take up-sslack in'the string when tying bundles or objectsof Very small dimensions. In this case the pulley Q, being normally held in its upper-most: position through the tension of the string I2, is moved downwardly bytheaction of the spring. In the embodiment ofthe invention illustrated in the drawing, thelever 2| is provided with a'heel' 22;whi'ch bears against the frameworkat -a given lower-most position of the pulley-9, thereby preventing further downward movement of said pulley. .This preventsjamming ofthe string between-the sliding matrix 23 and the lower side-of the'table 2, whenno bundle to be tied is present in the machine.

-:-A's-shown in'Figure 2, the matrix 23* is 'slidabl'y mountedunderneath' the table 2 and is adapted to roll up and press together a small'strip of metal; in co-operation with a- -stationary abutment 24. The strips are out intermittently from a-metallic .band- 25,which is advanced step by step and fed to the matrix where it is formed into I a 1 connecting'xclip. Ther lever-system provided for operating the matrix is driven by the cam-shaft 26,-andvisvadjustable inthe direction The lever 32, which is connected to the toggle IeVer E'L ZlI by means of the bar 3!. is provided at one end with a roller, rolling against the camdisc 25 and the other end of the lever 32 is pivotably mounted in'abearing 33. Said bearing is connected to the frame of the machine by means of'bolts 33a which are adjustable upwardly or downwardly in slots 33b in the frame. Upon lowering the bearing and thereby the point of rotation of the lever 32., the matrix 23 is adjusted in such a way that a greater length clip is cut off from the me'tallic'band as the band is moved between the matrix 23 and the abutment 24. Thus it is possible to :exactlyaccommodate the connection of the ends-0f the string by a metal clip to the thickness as well as to the strength and other properties of the material of the tyingmedium, and b zadjusting the distance between the matrix and the stationaryabutment by means of the fork '29; the amount ofdeformation of the metal clip also may be varied.

'It will-be noted that the short lengths which later are formed intoclips are severed from the end of band 25 by a knife 55, which knife; is in termittently raised-and -lowered by cam During eachsevering operation; the leading edge of the band is curved downwardly by a forming tool 56 which moves with knife 55.

The sliding matrix-23-preferably is provided, as illustratcd inthe drawing, atn-its end'facing the abutment 24 witha-hea'd 34,oscil1ably mounted on'a fixed fin-Maunderthe action of a spring 3 th, and-the free curved end of the metallic band 25 abuts against the end facev of said@ head 34. In the: end face. a semi-circular groove r-is pro-- vided (Figs. 3,-4 and,lA),-which does not extend to the full width. The intermediate, portion'of groove tfi'isinterruptedzby. a recess-=3lof greater depth. In this way, at both sides of'the recess 31, projecting hollowteethSG are formed. Now when the matrix 23 is. pressed aga-instthe abutmentZd, the clip, cut from the metallic band25 and situated betweenithe-matrix-and theabutment, is ro1led.up,-th-us forming a sleeve around the overlapping ends of the-strin the sleeve being pressed and deformed by means of the projecting hollowteeth so as to have a shape as indicated on an enlarged-scaleinFigure 5. 'Ifhe middle part of i the-clip corresponding to the recess?! in the,

abutmentpaccording to the thickness of the ends of=-the string to-be connected, but also varies the tightness and the deformation of the ends of the metal clip by, the teeth36, according to the nature ofthe material of the tying medium.

:Itwwillbe evident that the provision of a separate head 34 for the matrix will not always be required. Instead the end face of the matrix 23 itself; facing the abutment, may be shaped as described for the separate head.

Now having described the nature of my invention'yand the manner in which it is to be per formed, I declare that what I claim is:

1. The combination of a'support, a stationary abutment thereon having a Working face, a matrix having a working'face comprising a pair of longitudinally spaced and longitudinally g rooved teeth means reciprocally mounting said matrix on said support for movement toward and away from the working face of the abutment, feeding means for intermittently feeding the free endportion of a metallic strip past saidworking face of the abutment and across the space betweensaid matrix and the abutment and placing the terminal end of the strip in engagement with thelworking, face of the matrix, cutting means cooperatingwith said abutment and intermittently operable to cut off the said free end portion from the strip as the matrix moves toward the abutment, so as to produce a clip blank, the spacing of the matrix and the abutment determining the length of the clip, said matrixbeing arranged to continue toward the abutment after cutting off the clip blank so as to compress longitudinally spaced portions of the clip blank between the teeth of the matrix and the abutment in a manner to wrap longitudinally spaced portions of the clip blank around an object positioned in the space between the matrix and the working face of the abutment in alignment with the grooved portions of the teeth of the matrix, and coordinated driving means including means for operating said feeding means, means for operating said cutting means, and means for reciprocating said matrix.

2. The combination of a support, a stationary abutment thereon having a working face, a matrix having a working face comprising a pair of longitudinally spaced and longitudinally grooved teeth means reciprocally mounting said matrix on said support for movement toward and away from the working face of the abutment, feeding means for intermittently feeding the free end portion of a metallic strip past said working face of the abutment and across the space between said matrix and the abutment and placing the terminal end of the strip in engagement with the working face of the matrix, cutting means cooperating with said abutment and intermittently operable to cut off the said free end portion from the strip as the matrix moves toward the abutment, so as to produce a clip blank, the spacing of the matrix and the abutment determining the length of the clip, said matrix being arranged to continue toward the abutment after cutting off the clip blank so as to compress longitudinally spaced portions of the clip blank between the teeth of the matrix and the abutment in a manner to wrap longitudinally spaced portions of the clip blank around an object positioned in the space between the matrix and the working face of the abutment in alignment with the grooved portions of the teeth of the matrix, and coordinated driving means including means for operating said feeding means, means for oper- 6 atingsaid cuttingrmeans, and means forrecipro-q eating said matrix, said reciprocating means comprising toggle linkage pivotally connected, at

one end to said matrix, a first bearing on said support to which the opposite end of the toggle linkage ispivotally connected, said first bearing being adjustable in a direction parallel to the direction of movement of saidmatrix in. a manner to determine the degree to which the clip is compressed around said object.

, 3;: The combination of a support, a stationary abutment thereon having a working face, a ma-' trix having a working face comprising a pair of longitudinally spaced and longitudinally grooved teeth means reciprocally mounting said matrix onsaid supportv for movement toward and away from the working face of the abutment, feeding means for intermittently feeding the free end portion of a metallic strip past said working face of the abutment and across the space between said matrix and the abutment and placing the terminal end of the strip in engagementwith the working face of the matrix, cutting means cooperating with said abutment and intermittently operable to cut off the said free end portionfrom the strip as the matrix movestoward the abutment,'so as to produce-aclip blank, the-spacing of the-matrix and the abutment determining the length of the clip, said matrix being arranged .to continue toward the abutment after cutting off the clip blank so as to compress longitudinally spaced portions of the clip blank betweenthe teeth of the matrix and the abutment in a manner to wrap longitudinally spaced portions of the clip blank around an object positioned in the space between the matrix and the working face of the abutment in alignment with the grooved portions of the teeth of the matrix, and coordinated driving means including means for operating said feeding means, means for operating said cutting means, and means for reciprocating said matrix, said reciprocating means comprising toggle linkage pivotally connected at one end to said matrix, a first bearing on said support to which the opposite end of said toggle linkage is pivotally connected, a second bearing on said support, a lever pivoted at one end on said second bearing, a link pivotally connected toand between intermediate portions of said lever and of one of the links of said toggle linkage, and adjusting means for adjusting said second bearing to move the pivotal point of said lever in a direction transverse with respect to the direction of reciprocation of said matrix in a manner to determine the spacing of the working face of the matrix from the working face of said abutment when the matrix is in initial or retracted position.

4. The combination of a support, a stationary abutment thereon having a working face, a matrix having a working face comprising a pair of longitudinally spaced and longitudinally grooved .teeth means reciprocally mounting said matrix on said support for movement toward and away from the working face of the abutment, feeding means for intermittently feeding the free end portion of a metallic strip past said working face of the abutment and across the space between said matrix and the abutment and placing the terminal end of the strip in engagement with the working face of the matrix, cutting means cooperating with said abutment and intermittently operable to cut off the said free end portion from the strip as the matrix moves toward the abutment, so as to produce a clip blank, the spacing of the matrix and the abutment determining the enema 7" length ofthe clip, said matrix being arranged to continue toward the abutment-after cutting off the clip blank soas to compress longitudinally spaced portions of the clip blank'bet-ween the teethof the matrix and the abutment in a manner' to wrap longitudinally spaced portions of the clip blank around an object positionedin the space between the matrix and the wo-rkin'g'face of the abutment in alignmentwith the grooved portions of the teeth of the matrix, and coordinated driving means including means for operating said feeding means, meansfo-r operating said cutting means, and means-for reciprocating said matrix, said reciprocating means comprising toggle linkage pivotally connected at one end tosaid matrix, a first bearing onsaid support to which the opposite-endof the toggle linkage is pivotally connected, said first bearing being adjustable in a direction parallel to the "direction or movement-of said matrix in a manner to change the amount e f-approach of the workingface of said matrix toward th-e'work-ing face of said abutment so as to predetermine the degree to which-the longitudinally spaced portions of'the clip are compressed around said object, said reciprocating means further comprising a second bearing on said support, a lever pivoted at one end on said second bearing, a link pivotably connected to and between intermediate portions of said lever and one of'the links of said toggle linkage, and adjusting'means for adjusting said second bearing to'rnove' the pivotal point of said lever in a direc- 8 tion transverse with respect' to the direction of reciprocation of said matrix in a'manner' to determine'the spacing of the working face or the matrix from the working face of said abutment when the matrix is ininitial or retracted position, the two adjusting means being capable of simultaneous adjustment to accommodate the length of clip and the degree of compression thereof to objects of different diameters and degrees of compressibility.

JEAN JOSEPH MARTIN LAMBERT MARCI-IAND.

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

UNITED STATES PATENTS Number Name Date 219,734 Jones Se-pt.'l6, 1879 462,903 Kane Nov. 10, 1891 1,480,776 Matson Jan. 15, 1924 1,611,933 Matson Dec. 28, 1926 1,613,715 Matson Jan. 11, 1927 1,671,976 Avery June 5, 1928 1,836,497 Phelps et a1. Dec. 15, 1931 2,198,440 Marchand Apr. 23, 1940 2,310,556 Strong Feb. 9, 1943 FOREIGN PATENTS Number Country Date 352,710 Germany May 2, 1922

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