US384245A - Knotter for grain-binders - Google Patents

Description

(No Model.)

C. FARNER 8v G. LINDER. KNOTTBR 'EUR GRAIN BINDBRS.

No. 384,245. Patented June 12, 1f s.

3975021 it e5 mbuuwgmphnr. wa-hingam n a nNrren STATES PATENT Ormeso CONRAD FARNR AND GEORGE LINDER, OF MILVAUKEE, VISCONSIN.

KNOTTER FOR GRAINBINDERS.

SPECIFICATION forming part of Letters Patent No. 384,245, dated June 12, 1888.

Application tiled March l, 1896. Serial No.193,64li. (No model.)

T0 @ZZ whom t may concern:

Be it known that we, CONRAD FARNER and GEORGE LINDER, of Milwaukee, in the county of Milwaukee vand State of Wisconsin, have invented new and useful Improvements in Knotters for GrainBinders; and we do hereby declare the following to be a full, clear, and eXact description of said invention, reference being had to the accompanying drawings, and to the letters or iigures ot' reference marked thereon, which form apart of this specification,

Our invention relates to improvements in knotters for grain-binders; and it consists in certain improvements in devices and certain combinations and arrangement of devices,here inafter set vforth. l

In the drawings, Figure 1 represents a rear view of the device embodying our invention. Figs. 2, 3, 4, and 5 are details.

Like parts are represented by the same ret'A erence-letters throughout the several views.

The device for holding the end ofthe cord, consisting of the disk A and grooved arm F, the device for carrying the cord around the bundle, the jaws H, for tying the knot, and the device for cutting the cord are all constructed' in the ordinary manner.

Our improvements relate more especially to the construction and arrangement of the devices for rotating the cord-holding disk or wheel A, consisting of the pawl B, ratchet C, lever D, and verticallymovng slide E, the device for holding and regulating the pressure of the cordholding lever F against the periph ery of the wheel A consisting of the spiral spring J and adj usting-screw K, and the device for holding and regulating the pressure of the lever G against the jaws H.

The slide E is provided with an ellipticallyshaped aperture, L, for the reception of the lug M, which lug projects therein from the face of the collar N. Each end of the recess L is provided with an angular recess, O and P, in which the lug M engages as it moves with the shaft R. The collar N is secured to the shaft R by a set-screw, S. Thus when the lug M moves above and below the shaft R it moves the slide slowly; but when said lug M enters the recess P it carries the slide E up with a quick positive movement until the lug escapes from said recess above the shaft,

The lug then passes over the shaft communicating but little movement to the slide until it descends into the recess O, when it carries the slidcdown with a quick movement until it escapes from said recess below the. shaft. Thus the required movement is communicated to said slide E at the prop'er moment for operating the cord-holding disk A, and such movement is communicated from said slide to the disk A through the lever D, pawl B, and ratchetwheel C. The lever D is pivoted to the side of the frame T by the shaft d', to which it is secured by the boltu, and to the slide E by pin YV, which pin XV operates in the recess or slot y. The opposite end of thelever D is pivoted to the pawl B by a pin, A. The pawl B is retained incontact with the ra-tehet'whcel O by the plate spring B', which spring B' is held atits upperend within a recess at a, formed in the lever D, and the llower end of said spring is secured in a recess,

b, formed in the upper end ofthe pawl B, and the tension of said spring is such as to throw the lower end of the pawl against said ratchet C. The slide E is provided with a vertical flange, d, which operates in a corresponding groove at e, formed in the face of the shoulder The lower end of said slide is provided with a slot, g, for the reception of the bolt h, which bolt is affixed to' the stationary frame T. Thus the slide E is retained in place against the end of the frame T and guided in its vertical movement by the iiange d and bolt lr. The grooved cord-holding `lever F is pivoted atits upper end to the frame T upon the bolt k, and its lower end is retained in contact with and pressed iirmly against the disk A bythe spiral spring J iand adjusting and retaining screw K. The screw K is held in place by the flange C', through which it passes, and in which it is adjusted toward or from said arm F. The inner end of said adjustingscrew K is provided 4with a recess for holding the end of said spring J, by which said spring is held in position against said arm. A similar screw and tension spring to that last described, indicated by D and E, are employed to hold and regulate the pressure of the lever G against the knotterjaws H. The screw D is held in place by said flange O', in which it is adjusted, and one end of said spring E is ICO twofold function ofholding the tensionsprings in place and regulating their tension, and,ow ing to the limited space they occupy, they are especially adapted to be used in the combination shown.

The lever D is formed in two separate pieces, a andb, which overlap each other at the retaining-bolt u. The part a is provided with an elongated hole or slot, c', through which the retaining-bolt u passes, which slot permits of said part a' being extended or contracted..

The part b is rigidly attached to the shaft d and turns with it. The part a is provided with flanges g g', which overlap the edges of the part b in such a manner that when the retaining-bolt u is inserted and turned rmly down the two parts of the lever are held rigidly in place.

Ve are aware that similar spiral springs, E and J, have heretofore been held in place against a shoulder upon and around the eX- terior surface of adjusting-screws, while such springs are by our improvements held in place within al recess foimed in the interior of the adj listing-screws D and K.

Owing to the limited space for the springs E andJ" between theV spring supporting shouf'- der C and the bearing-surface of the cordholding arm F and the lever G it has heretofore been common to employ flat plate springs instead of spiral springs, it being difficult to insert a spiral spring of' sufficient length in the limited spaces allowed when such springs were placed against the end of the adjustingscrews, While it is obvious that by using recessed adjusting-screws G and K the length of the spiral springs may be greatly increased, so as to extend within the screws through the screw-supporting shoulder C', to or near their outer ends, and we are enabled to insert a much longer spiral spring than we could otherwise, which will producethe required movements, while it is obvious that when supporting the springs upon the outside of or against the ends of the screws the length of the spring is limited by the space between the end of the screw and its opposing bearings.

Having thus described our improvements, Vwhat we claim as new, and desire to secure by Letters Patent, isl

l. In twine binders for harvesters, the combination of the shaft R, collar N, provided with lug M, slide E, provided with ellipticallyshaped recess L and angular recesses O and l), said slide being adapted to be moved upward and downward by the circular movement of said lug M within said recess, leverD, centrally pivoted to the supporting-frame T, pawl B, and ratchet-wheel. C, affixed to the side of the cord-holding disk A, substantially as and for the purpose set forth.

2. In a cord-knotter for grain-binders, the combination of the shaft R, collar N, provided with lug M, slide E,having recesses L, O, and P, said slide E being guided in its reciprocating movement by the bolt 71, operating in slot g and connecting at its lower end by a movablejoint with the pawl-lever D,lever'D, formed in two parts adj ustabl y secured together and pivoted to the frameT upon theshaft or trunnion d', pawl B, and ratchet-wheel O, said wheel C being affixed to the side of the cordholding disk A, substantially as shown and described.

In testimony Whereofwe afiix oursignatures in presence of two witnesses.

CONRAD FARNER. GEORGE LINDER. Witnesses:

JAS. B. ERWIN, E. R. INMAN.

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