US567148A - Head-board for grain-binders - Google Patents

Description

(No Model.)

J. MACPHAIL. HEAD BOARD FOR GRAIN BINDERS.

No. 567,148. Patented Sept. 8, 1896.

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UNITED STATES PATENT EEicE.

JAMES MAOPI-IAIL, OF BLUE ISLAND, ILLINOIS, ASSIGNOR TO THE PLANO -MANUFAOTURING COMPANY, OF CHICAGO, ILLINOIS.

HEAD-BOARD FOR GRAIN-BINDERS.

SPECIFICATION forming part of Letters Patent no. 567,148, dated September 8, 1896. Application filed May 14, 1894. Serial No. 511,137. (No model.)

To aZZ whom it may concern.-

Be it known that I, JAMES MAOPI-IAIL, a citizen of the United States, residing at Blue Island, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in IIead-Boards for Grain- Binders, which are fully set forth in the following specification, reference being had to the accompanying drawings, in which- Figure 1 represents a perspective view of the rear end of a grain-binder and elevatorframe embodying my invention; Fig. 2, a front side elevation of the same, and Fig. 3 a detail perspective view showing the means for attaching the head-board to the binderframe.

Inthe drawings, Figs. 1 and 2 are upon one scale, and Fig. 3 is upon another and enlarged scale.

My invention relates to the device generally known as a head-board, which is usually hinged or pivoted to some suitable support at the rear of the machine for the purpose of guiding and adjusting the heads of the grain as the latter is delivered from the elevator to the binder. These head-boards are designed for use with adjustable grainbinders, that is, binders which are movable toward the front or rear of the machine to suit different lengths of grain, and it is intended that the head-board shall turn on its pivot with this sliding movement of the grain-binder, so as to operate as required with different lengths of grain.

The invention consists in pivoting or hinging the head-board to the binder at a point somewhere between the respective ends of the board, in connection with a spring oper-.

is no necessity for showing and describing a full machine, and I have shown only such parts of a grain-binding harvester as are necessary for an understanding of the construction and operation of my improvement and shall confine the description to these parts.

In the drawings, A represents a portion of the upright frame, and B the elevator-frame, constructed and arranged in the usual way. The grain-binder O is also of ordinary construction in all its general features and is mounted in any suitable way to permit a sliding movement toward the front or rear of the machine' The construction indicated in the drawings is one wellknown, in which the binder-frame is secured to a tubular bar 0, arranged transversely of the binder-frame and mounted on supports on which it is free to slide. The incline c of the binder is usually secured to this tubular bar, so as tomove with it, and the grain is delivered by the elevator to the upper edge of the incline in the well-known way. The binder is provided with a butt-adjuster-or butt-board D, mount ed adjustably at the front end of the binder for the usual purpose. It is usual in grainbinders to also provide a device for adjusting the heads of the grain at the rear end of the binder. This device is generally known as the head-board, and obviously it must be adjusted to correspond with. the arrangement of the binder, so as to perform its function upon grain of different lengths. In the present improvement this head-board E is pivotally connected to the incline of the binder at a point between the ends of the head-board, both of these ends being left free and disconnected from any other part. This mounting of the head-board upon the binder may be effected in various ways. As shown in the drawings, the connecting device consists of a kind of bracket E, which is provided with a fiat foot f, by which it is bolted or otherwise secured to the upper side of the incline, as seen in Fig. 3. this flat foot, and a suitable bearing-bracket Gis secured to one side of the head-board, in thisinstance the outside, being constructed with a suitable bearing g at one end, adapted to receive the stud or post f, and the bear- A stud or post f rises from ing passing down over this post becomes journaled thereon, thus providing for the vibration of the head-board on this journal as a pivot. The bearing-bracket G in the drawings is shown provided with a long arm g, extending from the bearing g upward along the side of the head-board and thereby furnishing means for securing the bracket to this board by bolts passing through this extension. This bearing-bracket is secured'to the head-board between the two ends of the latter, but preferably nearer to the upper than the lower end, as seen in the drawings.

The length of the head-board and the position of its pivotal support with reference to the elevator-frame are such that when the board is mounted in place its upper end will pass just a little beyond the rear side piece I) of the elevator-frame, as seen in Fig. 1. The journal-post f is considerably longer than the journal-bearing g, so that when the latter is applied thereto, as described above, the post will extend considerably above the bearing, and to this projecting portion of the post an actuating-spring ll is applied, this spring, as seen in the drawings, being a coil surrounding the post, with its lower end connected to the bearing and its upper end to the post, as seen in Fig. 3, and held thereto by means of a pin h. The arrangement of this spring with reference to the bearingbracket and other parts mentioned above is such that its normal action is to turn the upper end of the head-board inward, which, of course, will throw the opposite end of the said board outward. The spring therefore act-s normally to hold the upper end of the head-board against and in contact with the side piece I) of the elevator-frame, as seen in Figs. 1 and 2, and the relation is such that the spring will act to effect this result at the very limit of the rearward adjustment of the binder; but, as already stated, the head-board is entirely disconnected from the binderframe or any other part of the machine, except by its journal attachment, already described, and therefore it is perfectly free to turn on its journal in either direction. Obviously upon moving the binder forward the upper end of the head-board will be turned outward by reason of its free contact with the elevator-frame, already described, which motion will, of course, throw the lower end of the said board inward, the actuating-spring yielding sufficiently to permit this motion. lVhen, therefore, the binder is adjusted to suit shorter grain, the head-board is come spondingly adjusted by the inward throw of its lower end, as just stated above. Upon a movement of the binder to the rear again, the spring, the tension of which has been increased by the former adjustment just described, will, of course, act to turn this board in the opposite direction, the movement being guided and controlled by the elevator-fra1ne, with which the spring keeps the upper end of the head-board in constant contact. This action of the spring, of course, turns the lower end of the head-board outward, thus adjusting it to grain of greater length, as required, and as indicated in dotted lines in Fig. 2.

The head-board may be made of any suitable material, in all cases comparatively thin and light, however. I prefer to make it of thin metal sui'iiciently elastic to yield somewhat and thin enough to yield to a comparatively light force along the portion below the journal attachment, that is, at the lower or outer end of the board. This is to provide for a limited yielding of the lower end of the head-board independently of any movement of the upper end, so that it will give slightly to the pressure even of the heads of grain as the latter pass down the incline, as indicated in Fig. 2. This accommodates to a reas0nable extent the slight variations in the lengths of grain which occur, whatever the adjust ment of the binder may be; but it is not an absolutely essential feature of the invention.

Means for adjusting the binder bodily, as described, are so well known that there is no necessity of any particular description here. It is sufficient to say that, for the purpose of showing working mechanism of some kind, I

have illustrated a device for this purpose in Fig. 1, consisting of a shaft I at the rear of the elevator, having a crank-arm i at its lower end, which is connected byalink-rod vi with the binder, and a handle 7? at its upper end. The swinging of the handle will, of course, oscillate the shaft, which will correspondingly move the binder. A notched sectorJ maybe fixed at the upper end of the shaft, adapted to engage the handle to set any adjustment made.

As described above and shown in the drawings, the journal or pivot of the head-board is directly 011 the incline of the binder; but this is only a matter of judgment and convenience, as this pivotal support may be fixed on some other part of the binder-frame, provided the arrangement is such as to bring the parts into relation with each other, as described above.

It will be noticed, as already suggested above, that the head-board has no positive connection whatever with any part of the machine except the binder, and it will also be noted that it is secured to the latter so that it can be easily and quickly removed. All that is required is to remove the fastening-pin from the j ournal-post, when the head-board and spring may be slipped off from the post and so completely detached from the machine. This provides for the attachment and detachment of the head-board without any diffioulty and without disturbing any other part of the machine.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

In a grain-binding harvester, an elevator- 5 frame, in combination with a grain-binder adjustable transversely thereof, a head-board,

E, of thin elastic metal to yield easily at its lower end, a pivot device connecting the said board to the grain-binder, and an actuatingspring adapted to hold the upper end of the 10 said board in contact With the elevator-frame, substantially as described.

JAMES MAOPHAIL. Witnesses:

LE OTIE LEIB, ALLAN A. MURRAY.

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