US284430A - Knot-tying device for grain-binders - Google Patents

Description

(No Model.)

-N. JEWETT. KNOT TYING DEVICE FOR GRAIN BINDERS.

N0. 284,430. I 4 Patented S ept. 4, 1883.

UNITED STATES PATENT OFFICE.

'NATHAN JEWETT, OF TOLEDO, OHIO, ASSIGNOR TO HIMSELF, AND THE PLANO MANUFACTURING COMPANY, OF PLANO, ILLINQIS.

. KNOT-TYING D EVICE FORKGRAlN-BINDERS.

SPECIFICATION forming part of Letters Patent No. 284,430, dated September 4, 1883.

Application filed February 8, 185'3. (No model.)

To all whom it may concern.-

Be it known that I, NATHAN "JEWETT, of Toledo, in the. county of Lucas and State of Ohio, have invented certain Improvements in Knot-Tying Devices, for Grain-Binding Machines, of which the following is a specification. 1

This invention relates to that class of cordtying devices which consist of a spindle provided with two laterally-extending bills or fingers, one movable and the other stationary, by which the cord is first twisted into a loop, and its endsubsequently caught between the fingers and drawn through said loop to com-.

cal section through the tyer-head, the finger.

being in its closed position. Fig. 3 is'a view of the tyer, looking against the end of the fingers, as indicated by the arrow in Fig. 2. Fig.

4 is a perspective view, illustrating the man- 4 her in which the finger is opened by the action of the cord on the outside.

A represents a revolving shaft or spindle.

.13 represents the stationary tying-finger at one end of the spindle, and O the movable tyingfinger. The finger B, at its inner or heel end, is made of considerable size, with a spiral or tapering outer surface, to assist in forcing, the cord to its outer end, substantially as'in other tyers of this class. From its inner en-' larged end the finger tapers or diminishes in size toward its extremity, which is extended in a line at right angles, or substantially so, to the axis of the spindle A. Through the stationary finger B, in line with the axis of the spindle, I form a slot" or mortise of sufficient size to receive the movable finger O, which is secured therein by a pivot-pin, a, upon which the finger is free to rock to a limited extent.

, The outer end of this movable finger lies within or opposite the inner face of the stationary finger B, upon which it may be closed, and is the end of .the finger is closed against the sta- I tionary'finger, as shown in Fig. 2. At its rear or heel end the movable finger is provided with a rounded projection, d, which extends beyond the outer surface of the stationary finger whenever the movable finger is in its open positionthat is to say, with its outer end thrown away from the stationary finger. The rocking motion of the movable finger upon its pivot is limited in one direction by the contact of the two fingers at their outer ends, and in the opposite direction by a shoulder, 6, encountering the end of the slot in the spindle. I

In making use of my tycr-head it will be mounted in a machine of any approved form provided with means for imparting a rotary motion to the spindle, and with devices for presenting the cord in proper position across the tyer-head and retaining the ends. Various arrangements of this kind suitable for use in connection withmy devicebeing well known in the art, it is deemed unnecessary to describe them in detail herein.

The operation of the device is as follows: The ends of the cord forming the appliedband being laid across the head inside of' or behind both fingers, the head is revolved. The first efiect of this rotary motion is to cause the cord to be wound into the form of a loop, in

substantially the same manner as in other which is thus brought between them by their continued rotation. After the end of the cord has been laid between the fingers the rotation of the head permitsthe loop to slide forward over the fingers toward their end, thus relieving the shoulder d, and permitting the end of the movable finger to be drawn inward by the action of the loop toward and against the stationary finger to the position represented in 5 Fig. 2, whereby the end of the cord is retained firmly between the two fingers, so as to be drawn thereby through theloop as the latter is carried off over the fingers, in the manner. well understood by those familiar with the subject. v

I am aware that tyers of various forms'have been provided with movable fingers operated by meansof the cord, and this I do not claim; but I believe myself to be the first to construct 7 a tyer combining a stationary finger and a movable finger, the operative end of which acts against the inner face of the stationary fin ger, while its heel end is projected through and beyond the stationary finger, so as'to be acted upon by the cord upon the outer side to effect the opening of the finger.

It is obvious that the form of the parts may be modified within reasonable limits without departing from the limits of my invention, provided the movable finger is adapted, substantially as described, to be opened by the action of the cord on the outer side and closed by the-action of the cord on the inner side.

It is preferred to construct the end of the fingerB with a longitudinal groove orslot in its inner face to receive the end of the finger O, the better to secure the cord between the two ends, but this is not a necessary feature of the device. It will be observed that the inner rear 3 5 edge of the movable finger has an inward curvature or indentation, f. When the finger is in its open position, this curved edge co-operates with the inner-edge of the stationary hook, and serves to keep the cord in position near the center of the head during the formation 40 of the loop, avoiding the excessive use of cord, and keeping the same in such position that it will be certain to'act upon the shoulder d to hold the finger open during the proper period of time.

I do not claim herein any device or combination of devices represented in my application for Letters Patent filed February 7, 1883, No. 84,253.

Having thus described my invention, what I claim is-- 1. In a cord-tyer, the combination, with the rigid finger B, of the movable finger G, having one end arranged to act against theinner side of the rigid finger, and its opposite end v projected beyond the opposite side of said rigid finger.

2. In combination with the revolving finger B, lying at substantially right angles to its axis of rotation, a pivoted tying-finger extending through said revolving finger and projecting on both sides thereof, substantially as described, adapted to be moved in opposite directions by the action of the cord upon its respective ends or sides.

NATHAN JEWETT. W'itnesses:

P. O. BEARD, F. HUBBARD.

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