US828944A - Cotton-chopper. - Google Patents

Description

PATENTED AUG. 21', 1906.

N. MABRY. COTTON CHOPPER.

APPLICATION FILED MAY 2,1906.

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NARVELL MABRY, MERIDIAN, MISSISSIPPI.

COTTON-CHOPPER.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed May 2.1906. Serial No. 314,824.

To all whom it may concern.-

Beit known that I, NARVELL MABRY, a citizen of the United States of America, residing at Meridian, in the county of Lauderdale and State of Mississippi, have invented certain new anduseful Improvements in Gotton-Choppers, of which the following is a specification.

This invention relates to new and useful improvements in cotton-choppers, and more particularly to that class known as vertically-revolving choppers.

It is an object of this invention to provide novel means whereby the stroke of the blades may be regulated. It is also an object of this invention to provide in a device of this,

kind novel means for supporting the machine.

Finally, an object of this invention is to produce a device of the character noted possessing advantages in points of efficiency,

simplicity, and durability, proving at the same time comparatively inexpensive to manufacture.

With the foregoing and other objects in View the invention consists in the details of construction and the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail refer ence will be had to the accompanying drawings, forming part of this specification, wherein like characters denote corresponding parts in the several views, in which Figure 1 is a top plan view of the invention. Fig. 2 is a similar view with a portion broken away and illustrating a modified arrange ment. Fig. 3 is ,a view in perspective, illustrating the means for securing the chopperblades employed in the invention to their hub, the parts being detached.

In the drawings, 1 and 2 indicate the side pieces of the machine. Journaled near the front end of the machine is the shaft 3, extending transversely of the machine and projecting beyond the side pieces 1 and 2. On the portion of the shaft exterior of the frame are mounted the ground-wheels 4. The side pieces 1 and 2 are connected near the opposite rear ends by the cross-strip 5. This cross-strip comprises a flat strip of metal bent at opposite ends to form flangesT, through which the securing-bolts 8 pass to hold said cross-strip to the side pieces. The crossstrip 5 intermediate its ends is doubled longitudinally upon itself and has a central aperture 9. Adjacent the shaft or axle 3 is positioned a second cross-strip 10, which is similar in construction to the cross-strip 5. The central aperture 6 of this cross-strip 10 is in alinement with the aperture of the crossstrip 5. Mounted within the apertures 9 and 6 are the ends of the longitudinal shaft 11, one end of said shaft projecting beyond the cross-strip 10. Mounted on this extended portion of the shaft is a gear-wheel 12, which meshes with and derives its movement from a gear-wheel 13, fixed on the shaft 3. Thus it can be seen that the rotation of the ground-wheels 4 and the shaft 3 will cause the longitudinal shaft 10 to operate.

Adjacent to but a slight distance from the cross-piece 5 is a hub 14, which rotates with said shaft. Carried by the hub are the curved chopper-knives 15, these knives com.- prising in their construction a shank portion 16 and awidened knife portion 17 on their free ends.

In order that the chopper-knives may have an unobstructed movement, the side pieces 1 and 2 adjacent the chopper-knives are offset or extended, as at 18. It is the intention of the invention to adjust the chopper-knives one with relation to the other, and this is accomplished by forming the hub 14 with a peripheral groove 19, in which move the blocks 20, to which the shanks of the cutter-blades are attached-that is to say, each shank carries one of these blocks. Set-screws 21 pass through the hub and engage these blocks and hold them in their various adjustments. By this means the stroke of the blades can be regulated.

Depending from the rear of the side pieces are the spring-arms 22, which have their lower ends bifurcated. Journaled within the bifurcated ends of the arms are the rollers 23. The spring-arms are adapted to compensate for the uneven condition of the ground and holds the machine in a normal position. Extending upward from the side pieces 1 and 2 are the handles 24, which may be of any ordinary or preferred construction. Carried by the side pieces 1 and 2 in advance of the cutter-blades are the plows 25, the purpose of which is thought to be clearly apparent. Suitable means are employed at the front end of the machine for hitching the draft-team.

As shown in Fig. 2, a harrow 27 is substituted in lieu of the plows 25, this harrow being secured to the side pieces in any suitable manner that Will meet the requirements of practice.

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

In combination, a frame, a shaft carried thereby, means for rotating the shaft, a hub on the shaft, said hub having a peripheral groove, chopper-knives, blocks on the chopper-knives having angular peripheries, said peripheries engaging. the bottom of the groove of the hub, and means for holding the blocks Within the groove.

2. In combination, a frame, a shaft carried thereby, means for rotating the shaft, a hub on the shaft, said hub having a peripheral groove, chopper-knives, blocks on the chopper-knives fitting Within the groove of the hub, said blocks engaging the base of the groove to hold said knives against displacement, and means for holding the blocks against movement Within the groove.-

In testimony whereof I aflix my signature, in the presence of two Witnesses, this 16th day of April, 1906.

NARVELL MABRY.

Witnesses:

J. R. TEMPLE, R. S. MOORE.

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