US277739A - Cord-tyer for grain-binding machines - Google Patents

Description

(No Model.)

N. JEWETT.

00m) TYER FOR GRAIN BINDING MACHINES.

No. 277,739. Patented May "15,1883.

UNITED STATES PATENT OFFrcE...

NATHAN JEWETT, OF TOLEDO, OHIO, ASSIGNOR OF ONE-HALF TO THE PLANO MANUFACTURING COMPANY, OF PLANO, ILLINOIS.

CORD-TYER FOR GRAIN-BINDING MACHINES.

SPECIFICATION forming part of Letters Patent No. 277,739, dated May 15, 1883.

Application filed February 7, 1883. (No model.) I

To all whom t't may concern:

Be it known that I, NATHAN JEWETT, of.

Toledo,'1'n the county of Lucas and State of Ohio, have invented certain Improvements in Oord-Tyers for Grain-Binding Machines, of which the following is a specification.

This invention relates to that class of cordtying heads which have two rotating fingers extending transversely to the axis of rotation, and arranged to twist the cord in aloop around them, and then engage the end of the cord between to draw it through the loop. Numerous devices acting on this general plan have been devised, but owing to difierent causes they are all open to objection.

The aim of my invention is to produce a 'tyer which shall be positive in its action, which shall be free from operating cams, springs, Ste, and which shall tie the knot in such manneras to avoid the subsequent slackening of the cord in the act of tightening the knot.

To this end it consists in a rotary spindle or head provided with an inner finger extending laterally and rigidly therefrom, and with acooperating finger located on the outer side and provided in rear of its pivot with an outside heel projection, against which the cord acts to open the finger.

Referring to the accompanying drawings, Figure 1 represents a perspective view of my tycr; Fig. 2, a side view of the same with the finger in its open position; Fig.3,a longitudinal central section of the same with the finger in its closed position.

A represents a rotary spindle, which may be replaced by any other suitable rotary device adapted to carry the tying-fingers. On its outer end this spindle is provided with or fashioned into a head or enlargement, a, one face of which is curved in a spiral path, as indicated at I), to facilitate the upper passage of the cord to and around the tyingfingers, this feature beingsubstantiallythesame as in other tyers now in use. On one side a rigid finger, B, extends from the head or spindle substantially at right angles to'the axis of rotation, as shown. The finger is three-fourths of an inch (more orless) in length, and of small size, and is tapered toward its outer end to facilitate the escape of the cord therefrom. On its rear or inner side the finger may be slightly recessed,

as at i, at its junction with the head, the better to keep the cord in place during the formation of the loop; but this is not a necessary' feature. The outer end of the spindle or head is slotted to receive the movable tying finger O, which is secured therein by a pivotpin, a. The forward end of the finger O is arranged to close against the end of the rigid finger B, and to open outward therefrom, and is pointed and provided with a hook or shoulder, 0, to engage the cord and retain its end between the two fingers during the completion of the knot. when it is closed against the rigid fingerB the rear portion or heel of said finger 0 projects outward beyond the surface of finger B, as shown in Fig. 3. This rear or heel projection' of the movable finger behind its pivot is of the greatest importance, for the reason that when subjected to the action or pressure of the cord by which it is pressed inward it throws the opposite or hooked end. of the finger away from the stationary finger, thus permitting the end of the cord to pass between the two. It is preferred to give the head or spindle a slight lateral extension at the end, as shown at 1 and to pass the pivot of the movable finger through this extension ,to one side of the axis of the spindle.

.ln operating my device it will be mounted in a machine provided with appliances for imparting the rotary motion thereto, presenting the grain and the binding cord, and cutting and holding the latter. As these appliances in various forms, and the method of combining the same with rotaryiyer-heads, are familiar to those skilled in the art, and form, no part of the present invention, it is considered unnecessary to describe them herein. \Vhen the head is in action the cord is presented behind and transversely across the two fingers. The rotationof the head causes the fingers to act against the cord and twist the same into a loop encircling both fingers. The cord in thus winding about thefingersis finally caused to act against the outer heel end of the movable finger, which is thus caused to throw the forward end away from finger 13,1eaving an open space between the fingers to admit the end of the cord, which is caused to enter therein by the continued rotation of the head. Af-

The finger c is so formed that.

ter the end of the cord has thus entered, the fingers in rotating reach a position in which they permit the loop to slide forward over their ends around the end which they retain, thus completing the knot.

The essential feature of the invention consists in combining with the rigid finger the co-operating pivoted fingerhaving the heel projection on the outer side of the hub; In practice it is found that this construction insures the operating and closing of the finger at the proper times, while avoiding any movement at other times.

The present invention is restricted to those matters and things which are hereinafter claimed, and as to all matters which may be described or shown,but which are not claimed, the right is reserved to make the same the subject of a separate patent.

Having thus described my invention, what 1 claim is;-

1. The combination,-with the rotary head or spindle having the rigid laterally-extended finger B thereon,ot' the loosely-pivoted finger G, mounted in the outer end of thehead,and provided with the hooked forward end and with the heel projection, as described and shown, whereby said movable finger is adapted to be both opened and closed by the action of the cord.

2. In combination with the rotary spindle having the rigid finger and the point or exextension, and having the heel projection be- '-yond the face of the head, substantially as shown.

3. The combination of the rotary head or spindle having the rigid laterally-extending fingerB and the cord-retaining notch t, located as shown, in combination with the finger O, pivoted in the outer side of the head, and provided with the heel projection d, adapted, as described, to be-actuated by the cord, whereby the cord is retained in position to properly actuate said finger.

4. In arotary knotting head or spindle having the rigid lateral finger and the transverse slot in its outer end, combined with the pivoted finger seated in said slot, and having a heel projection adapted to extend beyond the surface of the head only when the movable finger is closed toward or against the rigid finger.

5. In a rotary tying-head,the combination of the-head or spindle provided with a rigid lateral finger, and a normally-free finger pivoted in the outer side or end of the head, and projected on both sides of its pivot to receive the action of the cord on its two ends alternately.

NATHAN JEWETT. Witnesses:

P. O. BEARD, I HUBBARD.

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