US917549A - Bunching-machine. - Google Patents

Description

G. L. GOOMBS.

BUNCHING MACHINE.

APPLICATION FILED 00112, 1901.

Patented Apr. 6, 1909.

C. L. COOMBS.

BUNCHING MACHINE.

APPLICATION FILED 00T.12, 1901.

Patented Apr. 6, 1909.

6 SHEETS-SHEET 2.

G. L. GOOMBS.

BUNCHING MACHINE.

APPLICATION rum) 00112, 1907.

Patented Apr. 6, 1909.

6 SHEETS-SHEET 3 O. L. COOMBS.

BUNGHING MACHINE.

APPLICATION rum) OUT. 12, 1907.

917,549.. Patented Apr. 6, 1909.

5 SHEETS-SHEET 4.

G. L. 000M138. BUNCHING MACHINE.

APPLICATION rum) oer. 12, 1907.

911. 7,54 Patented Apr. 6, 1909.

6 SHEETS-SHELT 5 GHESTERL. COOMBS, OF FAIRTON, NEW JERSEY.

nuncnme-macnmn.

Specification of Letters Patent.

latented April 6, 1909.

Application filed October 12, 1907. Serial No. 397,141.

T 0 all whom "it may concern:

Be it known that I, CHESTER L. CooMBs, a citizen of the United States, residing in Fairton, Cumberland county, New Jersey, have invented certain Improvements in Bunching-Machines, of which the following is a specification.

My invention relates to that class of devices particularly designed to tie or otherwise fasten a length of string or cord around a bunch of material; one object of the inven-' tion being to provide a machine especially adapted for use in bunching vegetables, such as as aragus, rhubarb, and the like, which shall e comparatively inexpensive to construct and relatively simple as to its mechanical movements and general arrangement of arts.

It is further desired to provide a'machine having the general characteristics above noted, which shall be capable of encircling a bunch or generally cylindrical body of any desired material with a length of string, and after fastening one end of string to the main body thereof by means of a wire clip, shall act to sever the loop of string around the material from said main body.

It is further desired to provide a bunchin machine in whichthe various mechanica movements and apparatus for encircling the body of material with a string and fastening the ends of said string together shall beof such a nature as to require in their construction a minimum of lathe work.

These and other desirable ends I secure as hereinafter set forth, reference being had to the accompanying drawings, in which,

Figure 1, is a front elevation of my improved machine; Figs. 2 and 3, are respectively elevations of opposite sides of my improved machine; Fig. 4, is a plan; Figs. 5 to 9, inclusive, are fragmentary perspective views illustrating the devices for fastening together and cuttin off the ends of the string in the principa positions occupied by them during onecomplete cycle of operations. Fig. 10, is a perspective view of a string loop showing the wire loop formed by my machine to hold together the ends of said string loops. Fig. 11 is a perspective view of the knife; Fig. 12 is a perspective view illustrating a detail of my invention. Fig. 13, is an inverted perspective view of the string holding plate and its associated parts.

Referring to Figs. 1 to 4 inclusive of the above drawings, A represents a supporting frame upon which are mounted the various devices constituting my machine, and it consists of two side members a held together and braced b two transverse members a and a. Said si e members are provided with bearings a in which is mounted the transversely extending main shaft B to which the power for drivin the machine may be aplied either by and or from any desired 'orm of motor; it being designed to turn continuously in one direction. Upon this shaft between the side members of the frame are mounted four cams b, b, b and I), while upon one of its ends, which is extended beyond the frame, is fixed an arm I)". A second transverse shaft C is mounted in bearings a. on the frame and its end also projects beyond said frame for the reception of an arm 0; there being a link 0 connecting the end of this arm with the end of the arm I) of the shaft B. These two arms are so proportioned that the revolution of the arm I) in one direction will cause the oscillation of the arm 0 through an angle of about 90 so that a curved string carrier or needle 0 rigidly fastened to the transverse shaft 0 is periodically moved toward and from certain mechanism hereafterdescribed. This needle, as shown best in Fig. 2, has at its end a transverse hole or eye 0 and at suitable intervals along its length are two other holes 0 and 0 through which openings is threaded the string for tying up or encircling bunches of vegetables or the like. The ball of string for this purpose is held within a suitable container which, in the present instance, consists of an open frame or cage D mounted upon a relatively heavy standard a supported from the transverse member a of the main frame of the machine. This cage is free to turn on a vertical axis and consists of a base portion d formed of two bars at right angles to each other, and each having rods (1 extending u wardly from its ends. Mounted upon t e transverse member a of the frame directlv under the string container D is placed a tube (2 curved through an angle of about 90 so as to change the direction of the string from vertical to horizontal, while mounted upon the front transverse member a. of the. frame is placed the tension device for the string. This,

as shown in Figs. 1 to 4, consists of a frame (1 provided with a bearing for a longitudinally movable rod (1 This rod has a head (i provided with a groove for the reception of the string and placed to co-act with a portion of the frame d against which it is normally pressed b means of a spring d". Attached to the rod d is one arm of a lever 11 whose second arm is extended in such manner as to be engaged by the string carrier or needle when this occupies its extreme outward position. When so engaged by the needle the lever is turned on its supporting pivot and so moves the rod (1 as to com ress the spring (1 and permit the string con ned between the head (1 and the frame. (1 to be fed freely. As soon, however, as the arm of the lever d is released by the upward movement of the lever, tension is again ap lied to the string by the s ring pressed rod For holding the free en of the string in the machine I provide a plate E mounted so as to be free to turn on a vertical spindle e and provided at each of its corners with a notch or recess e whereby a hooked form is given to each of said corners. This plate is provided with a number of teeth e designed to be engaged by a awl 2 carried b an arm e loosely mountu on the spind e e; there being also pro vide a holding pawl e for said plate. The arm e is connected by means of .a link e to an arm (2 rigidly fastened to a vertically extending s indle e and there is a link e connecting tie second arm e of this spindle with a lever e so supported from the frame A of the machine as to be periodically acted on by the cam b. A spring 2 serves to hold this lever toward the. shaft B so that it is always in a position to be engaged by said cam.

As shown in Figs. 2 and 13, there is mounted upon the s indle e a coiled spring 6 designed to act etween the upper bearing for said spindle and the arm a so as to yield ingly press the plate E which is under said arm against the upper face of a fixed plate a projecting from the bracket a Immediatel in front of the plate a. is a string cutting kni e F which consists of a vertically placed blade f having an inclined edge and designed to be transversely moved immediately under the string holding plate E at predetermined times. The blade itself is attached to or formed integral with a flat barf pivoted to one end of a horizontally extending lever f, to one of whose arms is attached a s ring f 3 designed to normall maintain said ever in such position that t e knife blade is held at and tends to return to the left hand side of the string holding plate E. For the purpose of actuating this knife I rovide a vertically extending lever f pivotally mounted on the part a of the frame so that its lower end f 5 is periodically engaged by the cam b toward which it is at all times held by a spring The upper end of this lever also engages the long arm of a clip forminglever G, whose other end, as shown best in Figs. 5 to 10 inclusive, is provided with a triangular notch g for re ceiving and assisting in the formation of the This lever G is pivotally mounted upon a part a of the frame which extends horizontally from the vertical plate a. forming part of and held to the standard a in any desired manner. The lower portion of the plate a is provided with a notch a" placed opposite to the notch g of the lever G and of a shape similar thereto. relatively to the plate a that at one extremity of its movement its forward] extending or short arm is moved practically into engagement therewith, so that a loop or cli of wire engaged between said plate and t llS end of the lever is closed up.

Pivoted to a portion of the plate a as shown in Figs. 2 and 3, is a clip forming lever H, whose forward end 71. is bent downwardly so as to cooperate with said plate and the short arm of the lever G in forming a loop or clip of wire. The long arm of this lever H is connected through a link It to an arm of a lever h whose second arm is so placed as to be periodically engaged by the cam b on the main shaft B. The various parts are so arranged that the arm h of the lever His moved toward and between the plate a. and the short arm of the lever G when this latter is some distance from said plate.

A link & serves to connect the long arm of a lever I to the oint of connection between the lever H and the link 71-, so that it also is actuated by the cam I). The lever I is itself pivoted to that side of the late a opposite that having the lever G ant its short arm is provided with a transverse wire passage shown best in dotted lines in lig. 2, at a. This passage is desi ned for the reception of the wire from whic are formed the string holding cli s and is so placed in the lever that one 0 its edges coaets with the edge of the stationary plate a to form the cutter or shear for the wire.

A spring h extends between any suitable point on the frame of the machine and the point of junction of the link i with the lever I so as to tend to maintain both this lever and the clip-forming lever H in the normal position of the former; 'i. c. with its wire receiving passage advanced in front of the shearing edge of the plate a and the lever H with the end of its arm h swung forwardly away from the coacting parts of the lever G and the plate a For supporting the wire from which the clips are to he made I rovide a bracket a" having a horizontal spindle or pivot u on which is mounted a wire carrying ree J. From this, as shown in 1 ig. 4, the wire extends to a tubular or other suitable guide 7' from whence it asses to a pair of feeding wheels or nip rol s j and 1' mounted upon a suitable bracket or extension a) from the standard a. Each of these nip rolls is pro- The lever G is so mounted 4 vided with a peripheral roove and is so laced that wire passing rom the guide 7' between them will be delivered in a straight line to the passage i of the lever I. For the purpose-of periodically turning one of the nip rolls, I provide u on the splndle a w eel 1' havin upwar ly (projecting pins or teeth 1' and also provide with peripheral teeth 7'. Of these the pins 1' are designed to be engaged by a SPIIIW actuated holding pawl 1' while the peripheral teeth are designed to be engaged y a hooked pawl i pivoted to a lever y loosely mounted on the spindle j. A vertically extending spindle has at its upper end an arm 3' connected y a link 7' mt the lever j and at its lower end has an arm 7' connected through a link j with the lever 1' This latter is so mounted on the frame of the machine as to be periodically enga ed by the cam b on the main shaft B towar which it is drawn by a spring 7'".

For the purpose of yieldingly pressing together the two nip rolls or w1re feeding wheels 1" and 7' I slot the end of the bracket a for the rece tion of the spindle 1' of the roller or whee j, and provide a double hooked structure K having two parallel arms k whose ends engage the spindle y and whose main portions after extending at right an les to said ends are finally united. A bo t it engages the rear end of the art K and has confined between its 'ends an a projection of the main frame which serves as a bearing, a compression s ring k whereby the arms 10 of said part K are caused at all times to draw the wheel y" toward the wheel 7' In using my machine a ball of string is placed in the container D and its end after passing through the tubular guide (1 and between the two members (I and d of the tension device is passed through the o ening c of the needle and then along the si e of the needle through the o ening c to the other side thereof, from W ence it finally passes through the eye 0 in the end of the needle. The end of the wire is taken from a coil thereof supported on the reel J through the wire guide and after passing between the two hip or feed rollers y" and 7' is run through the passage '8 in the short arm of the lever I, being permitted to project therefrom beyond the edge of the stationary plate a and the notch g in the lever G. The end of the string is then placed in the most forward of the notches of the plate E and this latter is turned on its axis,'to the extent of a quarter of a revolution in the present instance,. by turning the lever e by hand so that the end of the string is tightly held between said plate E and the a jacent face of the horistring extending between the end of the needle 0 and the plate E into the position shown in dotted lines in Fi 5. If now, the main shaft B be turned w ile the bunch of material occupies the position indicated at X in Fig. 5, the shaft 0 is also turned and the needle 0 is swung forward so that its end occupies the position illustrated in Fig. 6.

Shortly before the needle reaches the end of its inward stroke the lever H is so acted upon that its end it engages the end of the wire and forces this into the notches in the plate a and lever G and then between these two parts, thereby giving it an approximately U-shaped form. At the same time the lever I is turned on its pivot so that the wire assage i is moved past the cutting edge 0 the plate a thereby severing the U-shaped clip; the various parts being in the positions illustrated in Fig. 6 just before this action. At this time the two ends of the length of string encircling the bunch of material extend substantially parallel with each other and between the two arms of the wire cli cut off and held between the plate a and t e end of the lever G. The continued revolution of the main shaft B now causes the plate E to be given a quarter turn, with the result that the end of the string engaged by it is drawn farther into the machine while the other end of the length encircling the bunch is likewise drawn in by the continued inward movement of this lever. As a consequence, the loop of string around the hunch is shortened and consequently tightened, until finally, as shown in Fig. 7, a second hook formed by one of the recesses in the late E engages the two ends encircling the liunch finally sto ping its movement with said ends he d tightly between it and the stationary plate a. The cams are so arranged on the main shaft that immediately after this operation the arm h of the lever H starts to move outwardly from between the plate a and the end of the lever G, as does also the lever 0 and as soon as this arm has moved out a sufficient distance the lever G is so actuated that the sides of the clip are tightly compressed upon the two pieces of string leading cm the loop aroun the bunch so as to permanently hold these'together; it being understood. that the wire is sufficiently stifl' to prevent the ends of the string being easily pulled out of the wire clip. Just before the completion of the closing of the wire clip, around the two lengths of string, the levcrf is so actuated as to draw forward the knife F whose inclined edge then acts to sever the tightly stretched lengths of string. It should be noted, however, that the cam b and its co-acting lever f 4 are so arranged and constructed that under the action of the zontal plate a of the frame. The bunch of l spring f said lever is suddenly restored to material to be tied up is thenplaced in the loop formed by forcing downwardly the its normal position after its enga ement with said cam, and consequently t e knife F,

which is attached to said lever as well as the lever G also actuated therefrom, are both almost instantaneously restored to their normal positions when such action occurs. 5 The tied up bunch of material is now free to be removed from the machine, while the needle continues and completes the remainder of its backward stroke thereby drawing out the length of string between its end an the plate E into the position shown in Fig. 5. A loop of string 3 with the wire clip y holding its ends together, is shown in Fig. 10. Just before the beginning of another stroke by the needle the cam 6 acts u on the lever 7' and its connected parts so t at the lever j is oscillated, thereby turning the nip or feed roll 7' through a partial revolution and feeding forward a predetermined len th of wire across the front of the plate a. an the end of the lever G. At the completion of its backward stroke the needle 0 strikes the lever d of the tension device, thereby drawin the rod (1 away from the upper part of t e frame d and, as a consequence, removing the tension from the string. It is thus possible to easily depress the length of string stretched between the plate E and theend of the needle into the position shown in dotted lines in Fig. 5, though as soon as the needle is started on its forward stroke the pressure on the lever d is removed and since the head (1 is pressed by its spring'd against the frame (F, the sprin is again placed under tension.

1. The combination in a bunching ma chine of means for holding one end of a length of string, a string carrying needle, means for moving the needle toward and from the string holding means, a pair of jaws, a lever capable of entering between said jaws, means for feeding a length of wire across the jaws, said lever having means for causing it'to press said piece of wire between the jaws into a U-shaped clip around the string and afterward move from between the jaws while leaving the clip between the same, with means for causing said jaws to be moved together to finally compress the clip around the string. I

2. A bunching machine consisting of means for holding one end of a length of string, a needle engaging the string some distance from its end, means for operating said holding means to cause it to engage the string at a point distant from its end, a air of jaws and a member for forcing a lengt of wire between the same to form a substantially U-shaped clip of wire around the two portions of string adjacent to' said holding means, and means for operating the jaws to force the side portions of the clip toward each other so that they remain substantially parallel -while permanently connecting said 65 portions of string.

3. The combination of a fixed structure a lever mounted adjacent thereto, means for feeding a length of wire adjacent to the lever and said structure, means for forming said wire into a U-shapedloop between the structure and the lever, means for placing two lengths of string in the loop of wire, and means for operating the lever to cause it to close said loop upon the string.

. 4. The combination of a fixed structure, a lever pivoted adjacent thereto, means for feeding a length of wire adjacent to said structure and said lever, a second lever, means for operating said second lever to cause it to force a redetermined length of wire between the st lever and the fixed structure, means for placing a string across the wire, and means for operating the first lever to cause it to form a wire chp around the string.

5. 'I he combination of a fixed structure, a lever coacting therewith to form a wire shear, a second lever adjacent to the fixed structure having an arm capable of bein moved toward and from the same, means or feeding a piece of wire past the shear and across the space between the second lever and the fixed structure, a third lever, means for causin it to force a predetermined length of wire etween the fixed structure and the second lever, means for placing a pluralit of portions of string between the fixed ever and the second lever, and means for operating the second lever to close the piece of wire upon the string.

6. The combination of two structures spaced apart, a lever adjacent thereto, means for feeding a redetermined length of wire adjacent. tot e space between said structures, means for operating the lever to 5 force the wire into a U-shaped form between the two structures, means for holding the end of a iece of string so that it will pass through t e space between the structures, a needle for placing a second portion of the string between the structures, with means for moving one of the structures toward the other to close the wire around the string.

7. The combination of a rotary structure 1piovided with a projection or projections, a 1 5 ed structure co-acting with a rojection to hold a piece of string, a needle a o engaging the string, a pair of jaws, means for delivering a length of wire across said jaws,

a pivoted arm, means for turning said arm on its pivot to cause it with a length of wire to enter between the jaws, and means for subsequently moving together said jaws to cause them to clamp said wire upon the I string.

8. The combination of a rotary structure having a series of hooked projections, means for intermittently turning said structure, a fixed structure co-acting with the hooked structure to hold apiece of string, a needle engaging another portion of the piece of to give it a substantially U-shaped form, and

means for thereafter forcing said jaws together to cause them to permanently connect the ends of the piece of string.

9. The combination of a rotary structure having a series of projecting hooks, a lixed structure cooperating with said hooks to hold a piece of string, a needle engaging another portion of the length of string, means for operating said needle to carry said second string section into a position to be engaged by one of the hooks ol' the rotary structure, means for intermittently turning said structure, and means for forming a clip around the two portions of string after they have been engaged by one of the hooked projections of the rotary structure, said means including a device for cutting oil a length of wire, a pair of jaws, means for forcing said wire between the aws, and means for moving one of said jaws toward the other to close the wire on the string.

10. I he combination of a lixed structure, a lever mounted adjacent thereto, means for forcing a predetermined length of wire between the structure and the lever to form a clip, means for placing a plurality of string portions in said clip, means for cutting the said string portions adjacent to the clip, and a device common to the lever and to the string cutting means for operating said lever to close the wire loop around the string.

11. T he combination of a iixed structure, a wire shear and a movable structure adj acent thereto, means for feeding a length of wire past the shear across the space between the two structures, a lever for forcing a predetermined length of the wire between the two structures, and means common to the shear and to said lever for operating the same to cut oh and form a wire clip.

12. The combination of a structure having a fixed plate, a lever having a passage through it cooperating with said plate to term a shear, a second lever having an arm movable toward and from the plate, means for periodically feeding a predetermined length of wire through the passage in the first lever and across the space between the second lever and the plate, a third lever having operating means for forming said length of wire into a U-shaped clip between the plate and the second lever, means for placing a plurality of lengths of string between the plate and the second lever, and means for o )erating said second lever to close the wire clip around said portions of string.

13. The combination of adevice [or holding one end ol' a length of string, a shalt having a curved needle also engaging said string, means for moving said needle so as to cause its point to draw out a length of string between it and said holding device, a lixed and a movable structure placed to receive between them the end 01' the string adjacent to where it is held and also to receive it adjacent to the end of the needle, means for l'eeding a predetermined length 01' wire across the space between said structures before the string is placed therein, with means for cutting olt and closing a length of said wire around the two sections of string.

14. 'lhecombination in a bunching machine, ol' means including a needle for sup- )orting a bod of string, mechanism for lastening togetl ier the ends of a 100 of said string, and a tension device norma ly operative on the string to govern its delivery, said device having a member placed to be periodically moved by said needle and including a plate connected to said member and supported to engage the string, with a spring normally acting to press the plate against the string and oppose movement of said member.

15. The combination in a bunching machine of means for supporting a body of string, means for fastening together the ends of a loop of said string including a string carrying needle, and a tension device operative on the string between the needle and the string suiporting means, said tension device being p aced to be operated on by the needle so as to release the string under pre determined conditions.

16. The combination in a. bunching machine of a frame, means for supporting a body of string thereon, mechanism for fastening together the ends ol a loop of string around the bunch of material, said fastening means including an oscillatory string carrying needle, a tension device for the string including two members yieldingly pressed together, a lever operatively connected to one of said members and placed to be engaged by the needle when the latter is at one extremity of its path of movement so as to relieve pressure upon the string.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

CHESTER L. COOMBS.

Witnesses:

JOHN S. MITCHELL, N. B. OGDEN.

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