US741296A - Cord-holder for self-binders. - Google Patents

Description

No. 741,296. l PATENTBD OCT. 13, 1903. B. R., BENJAMIN.. CORD HOLDER PQR, SELF BINDERS.

APPLIOAT-IOJN; Hmm JULY -z, 1902. V No MODEL. a SHEETS-SHEET 1.

EATENTED 00T. 13, 1,903. E. E, BENJAMIN. Y GOED HOLDER EOE SEEE BINEEES.

APPLIUATION FILED JULY 2, 1902.

N0 MODEL.

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PATBNTBD o'GT. 1s, 1903. B. R. BENJAlmI.v

y CORD HOLDER POR SELF BINDERS.

APPLICATION FILED JULY 2, 1902.

3 SHEETS-SHEET' 3.l

N0 MODEL.

lINf-TTED STATES Patented October 13, 1903..

PaTnNT Orrick...

BERT- R. BENJAMIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL HARVESTER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

CORD-HOLDER FOR SELF-BINDERSg SPECIFICATION forming part of Letters Patent No. 741,29 6, dated October 13, 1903.

Application tiled July 2,1902; Serial No. 114,092. (No model.)

T all whom. t 1v1/tty concern:

Be it known that I, BERT R. BENJAMIN, a citizen of the United States, residing at Chicago, county ef Cook, State of Illinois, have invented certain new and useful Improvements in Cord-Holders for Self-Binders; and I do hereby declare the following to be a full, clear, and exact'description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The purpose of the present invention is to simplify the construction and improve the operation of the type of holders which consists of a disk revolving in contact with a flat plate, the cord being held between the opposing surfaces of the two parts and the disk being partially rotated during the operation of tying the knot; and the particular object in view is te bring the holding-surfaces up closer to the knetter, so as to economize in the amount of cord required to tie the knot.

The construction is illustrated in the accompanying drawings, wherein- Figure 1 is a side view of a knetter having a holder constructed in accordance with my invention, the needle appearing in the operation of laying the cord into the holder. Fig. 2 is a view in all respects similar to Fig. l except that the knetter is shown as having just completed the knot and the needle as about to recede. Fig. 3 is a sectional plan of the knetter and holder with the parts in the same position as in Fig. l. Fig. 4 is a similar plan of the saine parts with the positions corresponding to those of Fig. 2. Fig. 5 is a plan of the holder-plate detached. Referring to the views, a denotes the frame of the knotter; b, the breastplate; c, the knotterbill, and CZ the needle.` The knetter-frame is formed with an offset projection e on the outer side, which forms a bearing for a hook f, having a shank g extending upwardly and playing in a slot h in the partt'of the frame. The upper end of the shanlt is preferably screw threaded, and a spring x is coiled around the rod and reacts between the top of the bearing c Vand a nutj, that is adjustable on the shank to vary the tension of the spring. The bearing and the hook are curved, as shown in Figs. 1 and 2, and therefore the hook cannot turnv in its bearing. From the point where the hook emerges from the lowerend Yof the bearing it extends downwardly and is then bent abruptly inward, as shown at 7.5, and its extreme end is then preferably upturned, as at f. This hook forms the sole support for the plat-e Z of the holder, and the connection between the hook and the plate is made as illustrated in Figs. l and et-that is to say, the outer edge of the plate is pro videdwith a notch fm, which straddles the straight portion of the hook just below the bearing e, and the upturned point f of the hook enters a hole or depression that is provided for it in the under side of the plate at a point diametrically across from the notch and just under that part ofthe plate where the greatest strain on the cord comes. The plate is thus eectually held from turning and is supported from below, so as to leave its top surface unobstructed for the passage thereover of the disk.

Except-ing only in respect ofthe above-described bearing for the hook f the knetterframe is of the usual construction, and the holder-diskshatt q is journaled in the diagonal bearing n, so that its pinion stands in the proper relation to the shaft o of the camwheel p to be partially rotated at the appropriate period in the formation of the knot.

The holder-disk u32 is rigidly secured to the lower end of the holder-shaft q by means of a hub r, which extends up around the shaft and bears against the bearing n. q preferably extends below the disk and into an eye s in the holderplate, so as to coper ate with the hookfin preventing the plate from turning; but there is sufficient clearance between the end of the shaft, the heck f, and the plate to allow the latter to have a slight rocking motion to accommodate various sizes and unevenesses of the cord. The lower surface of the disk is fiat, andthe helderplate Z is held up againstit solely by the tension of the spring 'Ihe plate is here shown as of irregular outline; but its outline is unimportant provided it has a vert-ical flange c' rising from its edge on one side of the vertical transverse plane of the binder, passing through the axis of the knetter, and a knife a on the other side of the plane.

The holder-disk is of the peculiar construeu The shaftV tion illustrated in Figs. 2, 3, and 4. It is intended to have, as usual, a half-revolution in the direction of the arrow for every knot formation, and therefore has its construction duplicated at diammetrically opposite points of its circumference. Each half of the disk is provided with a notch e', and just behind the notch there is a hook f2, which is raised above the plane of the disk, so that as the disk revolves the hook will catch over the cord, which has been laid in the notch c by the needle. Behind each hook and on the opposite edge of the notch from the hook the disk is provided with an upstanding lug e2, which is straight on its advancing face and extends to the edge of the disk, so as to shear V,without danger of scraping or cutting. These lugs are set out from the hub of the disk, leaving a f ree space between them and the hub. The portions of the disk in rear of the raised hooks f2 and between these hooks and the cuttinglugs e2 are flat and below the level of the hook, and when the disk is in position to receive the cord the needle lays it, as represented in Fig. 3, in the free space between the lug e2 and the hub r diagonally across the notch e and in advance of and below the succeeding hook f2, so that said hook will pass over it, as above referred to. Immediately in front of each lug e2 the flat surface of the disk is provided with a V-shaped recess v2, which permits the needle-st-rand to be placed as close as possible to the holderstrand, so that the two may be readily seized by theknotter-bill, as shown in Figs. 2 and 4.

Risingr from the plate Zon the side at which thecord is received in the holder is the dange c', which is set at an angle to the'vertical transverse plane of the knottcr above referred to, as best shown in Figs. 3, 4, and 5. Its function is to defiect the cord as it is carried back around the hook f2 by the needle in its retreat into the position shown at e5, where it is in the proper relation to the knotter-bill for the succeeding knot. At the base of the iiange the edge of the plate inclines` downwardly from the fiat holding-surface a2, as shown at c, forming a depression which provides clearance-space for the hook f2 and prevents the binding of the cord at this point as it is carried back. On the opposite side of the vertical transverse plane of the knotter is the knife ct, against which the needlestrand is carried by the lug e2 and cut-at the completion of the knot, and immediately in front of the knife and between it and the holder shaft on the delivery side of the holder the surface of the plate Z is hollowed out or cut away, forming a groove u.' Into this groove the holder end of the cord is carried by the disk during the formation of the knot, reducing the holtling-surface and allowing the cord to be drawn therefrom by the knetter as it requires slack. After the completion of the knot the cord is released by the rames disk, which has advanced sufficiently over the groove to permit the holder-strand to be drawn out and the knot stripped without any resistance from the holder.

It has already been explained that except as to the provision and location of the flange c', the cutter a', and the groove u the shape of the plate Z, which underlies the disk 002, is not an essential feature of the invention. It is desirable, however, to form its upper surface at the outer side of the holder-shaft with la shallowgroove or depression tto permit the disk to clear itself of any particles of fiber that may have clung to it and also reduces the friction.

The knotter c shown herein is of that type which makes but one revolution to complete each knot and stands normally with its vjaws trending diagonally outward in position to permit of the easy stripping of the knot. As represented in Figs. 3 and 4, the knetter `stands a little to one side of the needle-slot w in the breastplate h, and the cord-supporting Fig. 3 indicates the position all the parts 4are in when the needle lays its end of the `cord over the knotter-bill and into the holder.

When the cord has been thus laid, the holderdisk starts immediately, and the hook f2 passes above the needle-strand. The knotter also starts at about the same time, and the lug e2, behind which the cord was laid, deflects it over toward the shank of the bill into the position shown in Fig. 4, so as to prevent the cord from escaping the bill and also so as to carry it around to meet the open jaws. While the disk is moving in this way, the needle-strand is free to draw out slack from under the hook f2,- but just before the lug e2 reaches the knife a the surface t2 at the bottom of the notch e passes over the edge S2, and the needle-strand is immediately gripped between the under side of the disk at the base of the hook and the flat upper surface c2 of the holder-plate. As will be understood from Fig. 2, the passage of the lug e2 from the point (see Fig. l) Where the cord is laidbehind it to the point where it shears the cord against the knife causes a considerable bend in the needle-strand before it is gripped, and this bend draws out enough of the needle-strand to pay out slack when this strand is severed and becomes the holder-strand in the formation of the succeeding knot. While this operation has been going on with the needle-strand the cut strand has been held solely by friction between the under side of the part x2 of the disk and the dat part a2 of the plate, and as the knotter requires slack at about the timel this strand reaches the groove u in the plate the reduced amount of frictional surface at that point permits it to pay out. .When the revolution of the holder-disk has progressed to the pointindicated in Fig. 4, the needle- Istrand is cut by the edge of the lug e2 shear- ICO IIO

ing it against the knife a and the holderstrand released by the disk passing over the groove. This frees the knot and leaves the needle-strand held by the hook f2 with its free end pointing toward the knetter, and the further movement of the disk to the point indicated in Fig. 3 carries the end around, as shown at e4 in that figure, the needle having receded in the meantime and pulled the cord around the edge of the hook f? between it and the flange c' into the position @.5 in Fig. 3. This completes the cycle of movements for one knot, and it all occurs during a one-half revolution of the disk and a single revolution of the knetter-bill.

Such being the construction and operation of my holder, it is to be noted that the cord is held entirely by frictional grip between the bottom of the disk and the yielding plate without being belayed around the edge of the hook f2, thereby permitting the cord to pass directly from between these surfaces to the knetter and be pulled from between them without resistance when the holding-surface under one of the parts of the cord has passed from off the surface d2 of the plate over the groove u. It is also to be noted that the arrangement and proportion of these parts provides an extensive holding-surface at the time when there is the greatest strain on the cord and that as soon as the point is reached where slack is required the amountof holding-surface diminishes, so as to permit the end to pay out.

Of course the tension of the spring a: regulates largely the strength of grip which the parts get on the cord, and as this is adjustable the grip may be regulated as desired to different sizes and conditions of cord.

It is also to be noted that all the movements of the cord are toward the knotter and toward the advancing open bill. The cords are thereby prevented from getting away from the knetter and are, moreover, moved in the direction to form the knot with the least possible length of cord.

An important feature of the invention is that the cord is held between flat parallel surfaces, and reliance is had entirely on the tension with which the plate and disk are held together for the frictional grip on the cord. In this Way all sharp corners and bends, such as are usually found in the disk type of holders, are dispensed with,and the cord'is therefore easier to handle. Moreover, the opposing faces of the disk and plate present an amount of holding-surface that has heretofore not been obtained in any construction of cord-holder of which I am aware, and the liability of the cord scoring or wearing grooves in the holding-surfaces is consequently praetically eliminated.

Having thus described my invention, what I claim isl. In a cord-holder for the knotters of selfbinders, the combination of a plate, and a disk overlying the plate, said disk having a hook to catch over the cord, said hook being shaped to permit the cord to slip over it when the needle recedes so as to hold it entirely by the clam ping action between the opposing surfaces of the plate and hook.

2. In a cord-holder for the knotters of selfbinders, means for holding the cord consisting of a plate, and a disk overlying the plate, the disk and plate having cooperating frictional holding-surfaces by means of which the cord is held entirely by the clamping action between the plate and disk without being looped around the holder.

3. In a cord-holder for the knotters of selfbinders, means for holding the cord in a position leading to the knetter without being looped around the holder, said means consisting of a plate, and a rotary disk overlying the plate and cooperating therewith to form the sole means for holding the cord, said disk being notched substantially tangentially to its hub to provide a hook that projects in the general direction of the disks rotation.

4. In a cord-holder for the knotters of selfbinders, a stationary knife, and means for holding the cord in a position leading to the knetter without being looped around the holder, said means consisting wholly of a plate, and a rotary disk overlying the plate and coperating therewith to hold the cord, said disk being notched substantially tangentially to its hub, and having an upstanding lug on the forward side of the notch to deiiect the cord against the knife.

5. In a cord-holder for the knotters of selfbinders, the combination with the frame of the knetter, of the holder shaft and disk, a holder-plate underlying the disk, and a platesupporting hook mounted in bearings outside of the diskshaft, said hook engaging the plate at its outer edge and being bent inwardly under the plate and having an upturned end engaging the plate underneath its holding-surface.

6. In a cord-holder for the knotters of self- ICO IIO

binders, the combination with the frame 0f the knotter, of a holder-disk and underlying plate, the holder-shaft extending below the disk and through the center of the plate, a plate-supporting hook mounted in bearings outside of the disk-shaft bearing, said hook engaging a notch in the outer edge of the plate and being bent inwardly under the plate and having an upturned end engaging the under side of the plate at a point near its opposite edge, the shank of the hook carrying an adjustable spring for holding the plate up against the disk with a yielding pressure.

In testimony whereof I affix my signature in presence of two witnesses.

BERT R. BENJAMIN.

Witnesses:

CHAs. N. CHAMBERS, FREDERICK A. FLATHER.

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