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Publication numberUS367989 A
Publication typeGrant
Publication dateAug 9, 1887
Filing dateApr 16, 1887
Publication numberUS 367989 A, US 367989A, US-A-367989, US367989 A, US367989A
InventorsJames Mallon
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
James mallon
US 367989 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



No. 367,989. Patented Aug. 9, 1887.

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SPECIFICATION forming part of Letters Patent No. 367,989, dated August 9, 1887.

Application filed April 16, 1887.

To all whom it may concern.-

Be it known that I, JAMES llLtLLON, acitizen of the United States, and a resident of New Orleans, parish of Orleans,.State of Louisiana, have invented new and useful Improvements in Stubble-Diggers and Cultivators, of which the following is a full and exact description, reference being bad to the accompanying drawings, making part of this specification.

This invention relates to certain improvements in that class of farming implements which are employed in digging and cultivating sugar-cane stubble.

My improved machine is especially intended for the cultivation of sugar-cane; but it may be used with equally good results in the cultivation of corn and other crops, or wherever it is necessary to destroy or remove the stubble or roots of former crops before another planting.

The nature of myimprovements will be understood from the following description, taken in connection with the drawings, on which- Figure 1 is a vertical longitudinal section of the machine. Fig. 2 is an end view of same. Fig. 3 1s a perspective view of one of a pair of a standards which are adapted to be secured to the under side of the machine-frame; and Fig.

4 is a similar View of an adjustingplate, in-

tended to be secured to the upper side of the frame by the same bolts which are used for securing the standard. Figs. 5 and 6 are de tached views of the disks, to which the diggerteeth are pivotally secured.

The frame of the machine is preferably made rectangular in form, and composed of a pair of side pieces, A A, a front and rear crosspiece, B B, a pair of inner longitudinal pieces, 0 G, and a central draft-pole, D, all of which are .secured in their respective positions by means Serial No. 235,055. (No model.)

secured on the same axial line the journal-pins i 2', upon which the transporting-wheels k k are adapted to operate, as in other wheeled niachines.

The standards E E are secured to the outer longitudinal side pieces of the frame by means of bolts that are made sufficiently long to pass upward through the aforesaid pieces and project through the elongated slots mm of a pair of adjusting-plates, N N, which are fitted to the pieces A A directly above the standards. The adjusting-plates NN are made to project over the inner edges of their respective side pieces, and the projecting portions of each are provided with vertical longitudinal slots 0, similar to the slot h formed in the lower flange of the standards E E.

The letters P P designate a pair of shafts which are rigidly connected with the outer ends of the horizontal parts of a pair of' T- shaped frames, R R, the vertical portions or stems s s of which are adapted to operate in the slots formed in the inwardly-projecting portions of the standards E E and the adjusting-plates N N above same, and are'inserted The di er-teetha are arran ed in sets of seven, (more or less,) and connected with hubs of peculiar construction, said hubs being formed in two parts each, as shown in Figs. 5 and 6. The main portion of each hub is let tered a, and consists of a disk having a center bored so as to freely revolve on its shaft P or P. The face of each disk is provided around its edge with a series of proj ections,b,between which the diggeuteeth are arranged for operation, the inner ends of the said teeth being loosely fitted on bolts 0, whereby an annular ring, d, forming the second part of the hub, is

secured to the disk portion thereof. The in- LJI bolt-holes thereof with projections c, which are adapted to press against the face of the disk, and thus allow the teeth to move freely back and forth to the extent of the space between the lugs on the face of the disk. By this construction of hub'the teeth are prevented from becoming twisted, and at the same time it allows one or more teeth to be withdrawn for repair or substitution without in any manner interfering with the balance of the set.

By reason of the slotted bolt-holes in the adjusting-plates N N it will be seen that the said plates can be moved back or forth, so as to change the position ofthe T-shaped frames, and thus cause the teeth of the forward and rearward shafts to out at equal or unequal depths, as the nature of the soil may require. \Vhen the adjusting-plates are moved to the rear,the forward diggers will enter to a certain deptlnwhile those following will go still deeper and with less strain, owing to the loosening of the earth by theforward cutters.

As heretofore stated, the frames carrying the digging mechanism are self-adjnsting,having' an np-and-down movement, which is rendered more or less easy by the position of the adjusting-plates N N. \Vhen the latter are in their rearmost positiomthey cause the stems of the T-frames to incline rearwardly, and thus to have a tendency to move upwardly as the machine is being drawn forward. \Vhen set in this manner, the machine is best adapted for operating in loose or sandy soil. By moving the adjusting-plates forward to a central position the T-frame stems will be bronghtto perpendicular positions and require greater pressure to raise same. \Vhen moved as far forward as the slots in the platesN N will permit, the machine ,is best adapted for operating in heavy stiff soil, the frames being less liable to be pressed upward'when in that position.

To afford means for limiting the cuttingdepth of the digger-teeth, as well as to effectually guard against the dropping of the T- frames in crossing quarter ditches, &e., I provide the lever T with a hook, t, and secure one end ofa short chain, t", to the machineframe,as shown at i,so that either of the links of the free end of the chain may be made to engage the aforesaid hook when the lever is pressed forward, and thus hold the same at such angle as to prevent the frames and digging mechanism from dropping belowacertain elevation.

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

1. The dish a, havingproieetions around its edge, as described, in combination with the annular ring provided withside projections,

c, the digger-teeth a, and bolts, whereby the aforesaid parts are connected, substantially as and for the purpose set forth.

2. In combination with the slotted plates N N and standards E E, the T-shaped frames and the mechanism described for raising and. lowcri ng the said frames, subsl antiall y as specified.

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


\li tnesses:

Jas. O. \Vmavnn, Joni: J'. Baumrr'r.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2881848 *Apr 2, 1956Apr 14, 1959Howry Berg Steel & Iron WorksSoil treatment applicators
US5019811 *Nov 18, 1988May 28, 1991Unigrafic AgDevice for marking edges of shelves
Cooperative ClassificationA01B35/10