US1326368A - Gearing for grain-drills. - Google Patents

Description

1 ,326,368. Patented Dec. 30, 1919.

C. H. PELTON.

BEARING FOR GRAIN DRILLS.

APPLICATION FILED NOV-10,1917.

Inventor CharlesH/Qtow CHARLES H. PELTON, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE THOMAS MANUFAC- TUBING COMPANY, OFSPRINGFIELD, OHIO, A CORPGR-ATION OF OHIO.

GEABING FOB. GRAIN-DRILLS.

Specification of Letters Patent.

Patented Dec. 30, 1919.

Application filed November 10, 1917. Serial No. 201,265.

To all whom it may concern:

Be it known that I, Crmnnns H. PEL'roN, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Gearing for Grain-Drills, of which. the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to gearing for grain drills and aims to improve the construction of prior patents to the applicant, No. 700,231, May 28, 1902 and No. 736A36, Aug. 18, 1903.

In these prior patents there is shown a change gearing for grain drills in which a distributor shaft is connected to a driving axle through a connecting shaft having pinions mounted thereon. these pinions meshing respectively with the gears on the driving axle and the distributor shaft. The construction of the patents has been generally satisfactory in commercial. use but it has been found that in some cases the extent of hearing or journal surface was not sufficient and an occasional breakage of parts resulted.

Therefore, it is an object of the present invention to provide a simple and effective construction of the connecting shaft referred to not liable to wear or breakage and easily oiled and kept in good condition.

Referring to the drawin Figure '1. shows a side elevation of a grain drill hopper and the mechanism of the invention applied thereto; and

Fig. 2 is an enlarged detail view of the connecting shaft and associated parts. the view being in vertical section.

Referring to the drawings the parts of the invention generally are shown as nearly similar to the corresponding parts of the patents referred to. The grain hopper 1 carries the distributer shaft 2 by means of" a bearing block 91, which block may be fastened to the bottom of the hopper in any desired way. As a preferred form the construction shown in the earlier of the two patents referred to may be employed. The distributer shaft 2 is shown as square in cross section and has splined thereon a bevel gear 3 which drives it. The driving axle 7 is supported in a journal or housing and fast to this axle is a change gear 4.1. as shown in the prior patents. A. connecting shaft 4: carries bevel gears 5 near its lower end and 71 near its upper end, the gear 5 being adapted to be driven by the change gear 4.1 and the gear 71 meshing with and driving the gear 3 on the distributer shaft. Thus, the movement of the vehicle rotates the driving axle 7 and the change gear 11 and thus operates the distributer shaft 2 in the desired manner.

To cause different speeds of rotation of the distributer shaft the bevel gear 5 is splined to the connecting shaft a and is moved along this shaft by a yoke 9, the yoke being slidable along a rod 12 supported by an extension :21 of the journal 30 at its lower end and fastened to the grain hopper 1 at its upper end through an intervening indicator section 20. As the yoke 9 is moved up and down along the rod 12 the bevel pinion or gear 5 is correspondingly elevated and thus the ratio of speed of shaft 2 to axle 7 is changed. In order to maintain the bevel gear 5 in the desired position a spring latch 15 is employed.

The parts thus far described are substantially those found in the prior patents and the invention of the present application will be next described.

It has been found by long usage that when the bearing plate 91 and the axle journal 36 were bored to provide journals forthe connecting shaft l, in some cases an insufficient amount of bearing surface was provided because of the rough and hard usage which such devices as grain drills received. In order to improve this part of the construction the present invention provides an integral cylindrical portion extending downwardly from the bearing plate 91, as clearly shown in Fig. 2. Here it will be seen that the portion 32 is simply cast into the bearing plate 91 and provides an elongated journal around which the upper end of the connecting shaft 4- may rotate.

This shaft 4- is shown as polygonal in cross section. but may be of any desired shape and at its upper end it is provided with a cylindrical aperture extending axially of the shaft t and closely fitting and surrounding the journal portion 32 around which it rotates. The upper bevel pinion 71 is provided with a polygonal aperture at its lower end closely surrounding the upper end of the shaft 4t and this upper end of the shaft l abuts against a portion 72 of the gear 71. Thus the cylindrical. portion llil 32 of the bearing block 91 provides a journal for the upper portion of the gear 71 and also for the shaft 4.

Similarly the journal or housing 30 surrounding the driving axle 7 is provided with an upwardly extending portion preferably cast therein and marked with the numeral 31. This extends a considerable distance into the shaft 4 and at its lower end this shaft is provided with a cylindrical aperture axially of its length closely surrounding and fitting the journal extension 31. The bevel pinion 5 is splined to the shaft 4: as before stated and when the shaft 4 is polygonal in cross section this may be done by providing the bevel pinion 5 with a similarly shaped central aperture.

It will be seen that the construction herein disclosed permits of the employment of quite long journals 31 and 32 for the connecting shaft 4:. Thus the journals are not likely to break and a long period of use may be had without suflicient wear of the parts to cause any trouble. Also, it is comparatively easy to oil these journals with the present construction and to this end an oil pipe 92 passes down through the bearing block 91 and ends at a point where oil may be conveniently applied around the cylindrical journal portion 32. Also in the lower portion of the shaft 4; an oil hole 93 may be provided so as to oil the lower journal portion 31.

While I have shown and described certain features as constituting my invention, it will be understood that parts have been shown for purposes of illustration only, and that I do not desire to be limited to such details, as obvious modifications will occur to a person skilled in the art.

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

1. In a grain drill, the combination, with a feed shaft, a bearing block in which said shaft rotates, said bearing block having a depending journal cast therein, a gear rotating the feed shaft, a driving axle, and a change gear secured thereto, a bearing block for said axle having anupstanding journal cast therein, a connecting shaft between the driving axle and feed shaft having bearings at its ends, said bearings, respectively, surrounding said journals, a gear secured to the upper end of the connecting shaft and meshing with the gear on the feed shaft, and a gear splined to the lower end of the connecting shaft and meshing with the change gear.

2. In a grain drill, the combination, with a feed shaft, a bearing block in which said shaft rotates, said block having a depending journal fixed therein, a gear rotating the feed shaft, a drive axle and a gear secured thereto, a bearing block for said axle having an upstanding journal fixed therein, a connecting shaft between the driving axle and feed shaft having bearings at its ends, surrounding said journals respectively, a gear secured to the upper end of the connecting shaft and meshing with the gear on the feed shaft, and a gear secured to the lower end of the connecting shaft and meshing with the gear on said axle.

3. In a rain drill, the combination, with a feed sha t, a bearing block in which said shaft rotates, said block having a depending journal fixed therein, a gear rotating the feed shaft, a driving axle and a change gear secured thereto, a bearing block for said axle having an upstanding journal fixed therein, a connecting shaft between the driving axle and feed shaft having bearings at its ends surrounding said journals respectively, a gear secured to the upper end of the connecting shaft and meshing with the gear on the feed shaft, a gear splined to the lower end of the connecting shaft and meshing with the change gear, and means to move said gear axially on the connecting shaft.

L. In a grain drill, the combination, with a bearing block having a depending journal integral therewith and a bearing block for a driving axle having an upstanding journal integral therewith, of a shaft having bearings axially arranged in its ends, said bearings surrounding and fitting closely the respective journals, said shaft having a portion at its upper end polygonal in cross section, and a pinion having an aperture fitting closely around the polygonal portion of said shaft.

In testimony whereof I afiix my signature.

CHARLES H. PELTON.

Images