US760515A - Attachment for threshing-machines. - Google Patents

Description

No. 760,515. PATBNTED MAY 24, 1904. J. B. BARTHOLOMEW.

ATTAGHMENT FOR THRESHING MACHINES.

APPLIOATION PILBD NOV.20,1895.

NO MODBL.

i X i UNITED STATES Patented May 24, 1904.

PATENT OFFICE.

JOHN B. BARTHOLOMEW, OF PEORIA, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMEN TS, TO AVERY MAN UFAOTURIN G COMPANY, OF PEORA, ILLINOIS, A CORPORATION OF ILLINOIS.

ATTA CHMENT FOR THRESHlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. '760,515, dated May 24, 1904. Application filed November 20, 1895. Serial No. 569,'793. (No model.)

To all wir/0771, 't may cancer-77,:

Be it known that I, JOHN B. BARTHLOMEW, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Attachments for Threshing- 'Machnes; and I do declare the following to be a full, clear, and exact description of the nvention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

Figure 1 is a side elevaton of the forward 'portion of a th reshing-machine having my im- `a simple, strong, and effective device for rigidly clamping the forward portion of the frame A of a threshing-machine or other vehicle to the forward wheels B, whereby the machine Will be steadied and held firmly in place on the forward supports.

My improved clamp or jack consists of a threaded rod or bar D, pivotally connected to the frame A, a movable member E, mounted loosely on said rod and provided with means for engaging with the rim of the adjacent wheel B, and an Operating-nut F, tted on the threaded portion of the rod D and adapted to move the member E longitudinally thereof.

As shown, I preferably bend the upper end of the rod D to form an eye d, through which extends a staple or other suitable fastening device on the frame A, the object being to provide a loose joint between the upper end of the jack and the machine whereby the jack can be easily moved into position to engage means of a short sleeve e, adapted to fit loosely 'on the rod or other member D, and terminate at their other (free) ends in laterally-extending lugs e'. The member E is strengthened by a cross-bar e", connecting the aforesaid bars near the lugs e'. The lugs e' are designed to fit under and bear snugly against the inner surface of the rim of the wheel B, and, as shown in Fig. 4, the upper faces thereof are beveled or inclined somewhat, so as to conforrn to the curve of the rim. i

The free threaded end of the loosely-hung rod D passes through the sleeve or guide e, and on such rod beyond the said sleeve is fitted an internally-threaded Operating-nut F. One face of this nut F contacts with the adjacent end of the aforesaid sleeve or guide c, and as such nut is turned in one direction the member E will be moved longitudinally of the rod D toward the supported end of the latter.

it to follow and lie against the upper surface of the nut.

The operation of ny improvements may be briefly stated as follows: When the ap paratus is not in working position or is being moved from place to place, the jack can be swung up into the position indicated in dotted lines in Fig. 1, in which position it is sustained by reason of one of the lugs e' thereof resting on the upper surface of the platform a of the thresher or being engaged and supported by any suitable device. When it is desh-ed to firmly clamp the forward end of the machine to the wheels B, the jack is disengaged from its u1:perinactive position and the nut F is turned sufliciently to allow the member E to move downward and bring the lugs d thereof 'into a plane below that of the rim of the wheel B. The nut F is then turned in the oppositc direction to force the member E upwardly and bring the lugs e' into close contact with the inner surface of the rim of the wheel. The machine and wheels will thus be securely locked in place and the oscillation and vibrations commonly experienced when the machine is running will be largely overcome.

I am aware that prior to my invention it has been proposed to provide devices for holding the wheels of threshing-machines stationary while the separating mechanism is in operation by locking them to the body of the frame or body of the machine.

In another respect the mechanism which I have shown differs from those heretofore proposed for holding the wheels of threshing-machines stationary.

My devices can be advantageously used in connection with the front wheels of a threshing-machine, and it is the front wheels and the axle which it is especially desirable should be held rigid and solid, because of the fact that the rapidly-rotating cylinder is almost immediately above this axle and the numerous devices are close to this axle which receive power from the engine and transmit it to the parts which drive the movable portions of the mechanism, such as the straw-table, the grain-table, the band-cutting and feeding devices, &0. The front axle in these machines is at its center pivoted to the frame above by the usual king-bolt, and between said bolt or pivot-and the ends of the axle there is usually no connection with the main frame, this general feature of construction being conventionally illustrated in Fig. 2 of the drawings. As a result when the machine is in operation the strain of the engine-belt and the vibrations resulting from the motions of the driven parts not only tend to cause the thrcsher to roll the wheels around the front axle, but also tend to Swing or rock the front end of the machine relative to the front axle.

I arrange each of the looking devices D E so that it exerts a powerful strain almost in a direct vertical line, whereas in earlier constructions within my knowledge for holding thresher-wheels the strain was applied on lines approximating the horizontal. Consequently I can hold' the wheel much more firml y against rotation or vibration around its axis, and by expanding or elongating the base of its connection with the wheel (as by placing the flanges or lugs e' e' suitably remote from each other) I can with the single upwardly-drawing screw firmly lock the wheel against rotation in either direction; but it will be at once seen this powerful vertical pull between the wheel and the frame tends to draw the frame down upon that side. Therefore I combine with the lock on either side of the machine means for resisting this vertical pull and which coact with the wheel-lock in such way that not only the abovedescribed endthat the machine shall be held in the proper level position and shall be so bound to the front axle that the strain is taken off from the central connection between the axle and the frame, and vibrations of the axle horizontally or vertically or vibrations of the thresher-frame relatively to the axle shall be overcome, as well as the vibration of the wheels; but the purpose described of overcoming the powerful up and down pull of either lock can be accomplished in other ways. By having a looking device D E secured to the side of the frame practically directly over the wheel a very short mechanism can be used, and it will hold the wheel against vibration around its axis without being subjected to the torsion which is experienced when a draft-rod is employed which extends under the frame and is connected to it at some point closer to the center than that herein utilized for attachment.

It will be observed that the peculiar effectiveness of the herein-described holding device as a lock for preventing the rotation of, the wheels is incident to its being disposed substantially in the vertical plane of the wheel transverse to the axis and outside of the periphery or rim of the wheel, so that the draft of the device upon the wheel is exerted in a direction directly outward from the axis of the wheel or substantially radial relative to the wheel.

What I claim is- A looking device for threshing machine wheels, comprising a wheel-engaging member having the frame E with the projections or lugs e', e' adapted to engage the inner periphery of the wheel-rim at points at either side of the vertical axial plane of the wheel and the clamping device D adapted to have its upper end Secured to the thrcsher-frame at a point above the wheel and having its lower adjustable end supporting the wheel-engaging frame E and adapted to adjust the said wheelengaging element relative to the thresherfrarne to eXert a powerful upward draft upon the said wheel and prevent its rotation or oscillation about its axis, substantially as set forth.

In testimony whereof I afix my signature in presence of two witnesses.

JOHN B. BARTHOLOMEXV.

VVitnesses:

J. L. MCKITTRICK, EDWARD D. NORTHAM.

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