US404840A - Band-cutter - Google Patents

Description

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Cfu. HILL. BAND GUTTER.

N0. 404,840. Patented June 11.1889.

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C. H. HILL. BAND GUTTER.

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UNITED STATES PATENT OFFICE.

OHAUNCY I-l. HILL, OF MINNEAPOLIS, MINNESOTA.

BAND-CUTTER.

SPECIFICATION forming part of Letters Patent No. 404,840, dated June 11, 1889.

Application filed September 14, 1888.

T0 all 'whom t may concern:

Be it known that I, CHAUNCY H. HILL, a citizen of the United States, and a resident of the city of Minneapolis, county of Hennepin, State of Minnesota, have invented a certain new and useful Improvement in Band- Outters for Thrashing-Machines, of which the following is a speciiication, reference being had to the accompanying drawings.

The object of my invention is to simplify and improve band-cutting mechanism.

To this end my invention consists in the construction hereinafter described, and particularly pointed out in the claims.

Referring to the drawings, wherein like letters represent like parts throughout, Figure I is a side elevation, Fig. II a plan, and Fig. III an end view, of my band-cutter detached from the thrashing-machine.

A represents a supporting-frame adapted to be attached in any suitable manner to the side of the mouth of the thrashing-machine. (Not shown.)

B is a carrier-frame, pivotally connected by hinges l) to the main frame A. t

C is an endless carrier, preferably made of canvas, with cross-slats c, mounted upon rollers I) D', which are journaled in the opposite ends of the carrier-frame B. The carrier-frame is bracedand locked in its proper working position by a suitable brace-rod E. As shown, this is a hooked brace pivoted at one end to an angle-iron e, rigidly bolted to the main frame and engaging by its hooked extremity with a perforated lug or cyebolt e', secured to the carrier-frame.

On the inner corner of the main frame is rigidly secured an overhanging shaft-frame F, consisting of a vertical metallic standard 4o f, bolted to the end and side bars of the main frame, and a right-angled hollow extension or sleeve f', cast integral with the top thereof,- and extending inward parallel with the end bars of the main frame and the carrier-rollers to a point near the center line of the carrier. The overhanging part of this framee'. e., the sleeve f --is at a proper height above the level of the carrier to afford sufficient clearance for the free passage of the cutbun- Serial No. 285,362. (No model.)

dles. The standard fmay be braced by a tie-rod a.

Within the sleeve f is a hollow shaft G, of greater length than the sleeve f', having on one end a crank g and on the other a rigid bracket-arm g', extending to a point directly over the inner end of the carrier O. Inside the hollow shaft G is a longer solid shaft H, having on its outer end a sprocket wheel K and on its inner end a cam-wheel L. This cam-wheel is provided with a camchannell onv its inner face, approximately elliptical in-shape.

To the outer end of the rigid arm g', and at right angles thereto, is attached a cutter-bar M, provided with fixed triangular or sickle shaped knives m. On the inner face of the cutter-bar M are keepers m', in which is mounted a reciprocating cutter-bar N, having triangular or sickle shaped knives n. On the arm g,preferably near its connection to the hollow shaft G, is pivoted in the horizontal plane, by the pivot-pin p, a bell-crank lever P, whose shorter arm p is provided with a roller Q, adapted to work in the cam-channel Z, and whose longer arm p is connected by the rod R with the cutter-bar N; hence, on turning the shaft H, a reciprocating motion will be imparted to the cutter-bar N and its knives n.

A shaftv S is journaled in suitable supports on the end of the main frame A, adjacent to the inner corner of the carrier-frame B, and is provided with an eccentric S', a sprocketwheel S, and a beveled gear-wheel S". A sprocket chain K connects the Wheels S and K.

T is the eccentric-strap. An eccentric-rod made in two telescoping parts W WV connects the eccentric-strap with the crank g. The telescoping joint is formed by an open link t, formed on the lower end of the upper section IV of the eccentric-rod, which is swiveled on the upper end of the lower section WV. The end of the section WV within the link t is provided with an enlarged head t. Encircl'ing the section W, between the head t andthe lower end of the link t, is a strong coiled spring X, tending to keep the two parts together. The effect of this construction is to make the eccentric-rod automatically adjustable lengthwise by the pressure of the grain, rendering it adaptable to different-sized bundles.

Y is the main driving-shaft mounted in suitable supports Y', rigidly secured to the main frame. This shaft is arranged parallel to the sides of the main frame adjacent to the bevel gear-wheel S". It is provided with a bevel gear-wheel Z, engaging with the gearwheel C and with a main driving-pulley Z', adapted to be coupled by suitable beltingto a source of motion. (Not shown.) I have shown a complete band-cutter adapted for attachment to the right-hand side of the thrashingmachine. It will be understood, of course, that a similar one is used 011 the other side.

I have `shown on the inner end of the shaft Y a coupling Z, by means of which, if so desired, both cutters may be connected and driven from a single belt. In practice, however, I prefer to use an independent belt for cach cutter, connecting to independent pulleys on the opposite sides of the thrashingmachine. As both sides are exactly alike in construction, I have deemed it unnecessary to show more than one in the drawings.

The operation is evident from the description. A rocking motion is imparted to the shaft G by the eccentric on the constantlyrunning shaft S and its connection to the crank g, the effect of which is to move the rigid arm g and its cutter-bars up and down in the are of a circle. r1 hc arc through which the cutter-bars move will vary in length more or less from the normal throw of the eccentric, according to the size of the bundle, the two parts of the eccentric-rod moving lengthwise away Afrom each other under the pressure of the bundle against the resistancespring X. The eccentric-rod is et' a proper length when the two parts are drawn together to their limit to bring the knives to a point within 'two or three inches of the carrier at the limit of the 'forward and downward throw of the shaft G. From the cam Il on shaft II and its coni'iections--the bell-crank lever I and link R--a continuous reciprocating motion is imparted to the cutter-bar N and its knives n. The bundles are placed on the carrier parallel with the cutter-bars, and as they pass under the bands are severed by the compound motion of the knives.

The shafts S, II, and G are geared n p to run at a relatively high rate of speed. IIence there will be several up and down movements ot the cutter-bars during the passage of a single bundle, the effect of which is to render it next to impossible for a bundle to pass without. the band being cut, to afford clearance as needed, and to partially separate and spread out the out bundle.

The compound motion of the knives is an important feat-ure in my mechanism. I thereby secure the eilect of a double sickle and a shear-like or drawing cut at the saine time.

The carrier is driven directly from the shaft S.

Minor features may be changed without departing from the spirit of my invention.

IVhat I claim, and desire to secure by Letters Patent of the United States, is as follows:

l. In band-cutters, the combination, with an endless carrier, of a rock-shaft having a rigid arm overhanging said carrier transverse to the plane of its movement, a'cutter on the outer end oi said arm, a driving-shaft provided with an eccentric or crank, an extensible connecting-rod from said eccentric to said rock-shaft, and a resistance-spring acting on said rock-shaft in opposition to the pressure of the bundles, substantially as described..

2. In band-cutters, the combination, with an endless carrier, of a rock-shaft provided with a crank and a rigid arm overhanging said carrier transverse to the plane of its movement, a cutter on the outer end of said arm, a driving-shaft provided with an leccentric, a telescopic eccentric-rod connecting said eccentric and the crank of the rock-shaft, and a spring connecting and tending to draw together the telescopingparts oi said eccentricrod, substantially as described.

3. In band-cutters, the combination, with an endless carrier, of ahollow rock-shaft having a cutter-supporting arm overhan gin g said carriertransverse to the plane ef its movement, a constantly-revolving shaft within said rock-shaft provided with a cam, Iixed and movable cutters on said supporting-arm, and a connection from said cam to said movable cutters for operati ng the same, substantially as described.

4. In band-cutters, the combination, with an endless carrier and a driving-shaft having an eccentric, of a hollow rock-shaft having a crank and a rigid cutter-supporting arm overhanging said carrier, an extensible eccentric-rod coupling together said crank and eccentric, a fixed and a movable cutter-bar provided with knives mounted on said supporting-arm, a constantly-rcvolving shaft located within said rock-shaft and provided with a cani, and a connectionfrom saidcam to said movable cutter-bar, si'ibstantially as described.

5. In band-cutters, the combination, with an endless carrier and a driving-shaft having an eccentric, of a shaft frameor support overhangin g the path of the bundles, a hollow rock-shaft havin a crank-arm and a rigid cutter-supporting arm overhanging said carrier transverse tothe plane of its movement, vfixed and movable cutter-bars having knives mounted on said arm, an automatially-extensible eccentric-rod coupling said eccentric and crank, a revolving cam-shaft within said rock-shaft provided with a cam, a bell-crank lever pivoted to said rock-shaft, having one arm in engagement with said cam and the other connected to said movable cut- IOO IIO

ter-bar, and a connection from said cam-shaft to said driving-shaft, as and for the purpose set forth.

6. In band-cutters, the combination, with an endless carrier, of a rock-shaft having a crank and a cutter-supporting arm overhanging said carrier, a xcd and a reciprocating cutter mounted on said arm, a driving-shaft provided with an eccentric, and an automatically-extensible eccentric-rod coupling said rol eccentric and the crank of said rock-shaft,

substantially as described.

CHAUNOY H. HILL.

In presence of- JAS. F. WILLIAMSON, EMMA F. ELMORE.

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