US1036584A - Post-hole-digging machine. - Google Patents

Description

g s. DIXON. POST HOLE DIGGING MACHINE.

APPLIOATION'IILED MAY 4, 1912.

1,036,584. Patented An .27,1912.

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Q w/ wW S. DIXON. ros'r HOLE meams mcnmn. AYPLIOATIOI TILED IA! 4, 1912.

1,036,584. Patented Aug. 27, 1912.

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SAMUEL DIXON, OI BIRMINGHAM, ALABAMA.

POST-HOLE-DIGGING MACBIN E.

Specification of Letters Patent.

Patented Aug. 27, 1912.

Application filed Kay 4, 1912. Serial No. 895,097v

To all whom it may concern:

Be it known that I, SAMUEL, DIXON, a citizen of the United vStates, residing at Birmingham, in the county of Jefferson and State of Alabama,-have invented a new and useful Post-Hole-Digging Machine;- and I do hereby declare the following to be a full, clear, and exact description of the,

invention, such as will enable others skilled in the art to which it appertains to make and use the same. This invention relates to a new and useful posthole digging machine.

p e principal object of the invention is to providea machine of this nature, in which various essential, desirable, and practical features of construction exist.

The various features of construction are hereinafter set forth, shown in the drawings and claimed. a

In the drawings :-Figure 1 is a view in perspective showing the improved machine constructed in accordance with theinvention, and showing the auger in a raised position. Fig. 2 is a sectional view through the machine, showing the auger completing the .drilling of a post hole. Fi 3 is a plan view of a foot treadle device for throwing a rack inmesh with a gear. As to the accompanying drawings 1 designates the base frame, w ich comprises the beam; 2 and the handle beams 3 and 4. Connectin the handle beams 3 and 4 is a trans verse eam 5, and extendin downwardly from the handle beams 3 an 4 are the legs 6. Secured to and projecting downwardly from the beam 2 are the bearin brackets 7,

in which the axle 8 is journaled. Mounted on the axle 8, one upon each end, are the supporting wheels 9, whereby the machine may be moved from place to place. Vertical standards 10 are provided having feet 11, which are secured by bolts 'or other means 12 to the beam 2. The standards 10 rise vertically from the beam 2, and their upper ends terminate in restricted threaded ortions 13, which penetrate the connecting ar 14, and receive the nuts 15. Connecting between the bar 14 and the handle beams are the brace .bars 16 'and .17, which are socured in position as at 18 and 19. However, the brace bar 17 terminates in an integral tooth rack 20. The metal 21 which integrally connects the rack 20 to the bar 17 is the bearing 39 and-the The upper end portion 0 bracket plate 52, as at 53.

. in F 2. The lower portion of the rack 20 terminates in a spring foot 22, which by bearing against the handle beam 4 assists in steadying the rack in engagement with the pinion, while the resilient or spring portion 21 tends to throw the rack in the position shownin full lines in Fig. 2. The purpose of this rack 20 will presently appear, as the invention is further described. A vertical movable frame 23 is provided, which comprises the upper and lower bars and the intermediate .bar 24, 25 and-26'andthe end rods 27. Projecting laterally of the end rods 27 are the projections 28 and 29, which termmate in spherical bearings 30, which are sleeved slidably-on the standards 10, so that tically.

J ou-rnaled inbe'arings 31 of the end rods 27 of the frame 23 is a shaft 32, each end of whichterminates in a crank33 having a handle 34. Movable with the shaft '32 is a beveled pinion 35, which meshes with a similar beveledpinion 36 upon the upper end of the'shank 37 of the auger 38. The auger shank extends through a bearing 39 of the bar 25, so as to revolve therein. This bearing 39 is provided with a race-way 40 in itsupper surface, and one in its lower surface. Secured as at 42 to the auger-shank are the annular plates 43 and 44,-which are provided with race-ways 45 and 46, to cooperate with the ball.bearing 47, between plates 43 and 44.

the auger shank is mounted in the bearing 49.

Revoluble with the shaft 32 is a spur pinion 50 adapted to mesh with .the teeth of the rack 20, so that the frame 23 will'lower when the shaft 32 is rotated by virtue of the cranks 34, and will also raise ormove in a reverse direction. However, the-frame 23 will gradually lower, without the intermeshin of the pinion 50 and the teeth of the moi 20, because after the auger 38 has secured a holdin the ground, the threads thereof, as the auger further enters the ground will pull the frame 23 downwardly,

-The frame 23 will best move downwardly when the pinion 50 and the rack 20 intermesh. To cause the rack to intermesh with the pinion 50 pressure may be applied upon the foot treadle 51, which is ivoted inthe en pressure is applied upon the treadle 51, the end 54 thereof engages the tail end 55 of the bar the frame 23 maybe raised and loweredven m, which is noted a 5': in the bracket en the end 54 and the tail end 55 go in this manner, the end portion 59 o the bar 56 moves, downwardly against the action of the spring 60, and came against the rack' 20, thus forcing the plate 68.

teethfliereof in mesh with the teeth of the inion 50. The foot treadle 61 is distorted terally, so as to be free of the brace n i ilggini h 1 i h ch post oes't ema ineispositioned so ground at the des'red location. Then motion is imparted to the shaft 32, which will not only rotate the anger throu the gears, 85 and 36, but will cause the time 23 to descend by the intermeshing of the pinion 50 and the rack 20. As before stated it is not absolutel necessary to use the rack 20 to cause the fam 23 to descend. However,

to cause the frame 23 to ascend, so as to remove the. auger from the hole; the rack 20,

t at the auger will enter the with the upper porh'on of the ide frame and terminating'in a resilient ot adapted to engage the base frame to assist in stead ing t e rack when in engagement with pinion, and a manually operated device adapted to throw the rack in cut with the pinion.

2.- In combination, a portable base frame having a guide frame rising therefrom, a vertical movable skeleton frame guided upon the guide frame 'andhaving a boring mechaniam, a revoluble shaft mounted in the skeleton-frame and having gear connections with the boring mechanism, a spur pinion, a tooth rack having resilient connection with the upper portion of the guide frame and terminating in a resilient footadapted to engage the base frame to assist in steadying the rack when in engagement with the inion, a pivoted bar mounted on the base frame to be operated so as to cam inst the'rack bar to tlrovgliizdin mesh wit the inion, a spring or o t e camming End of the pivoted bar in li raised position, and afoot treadle mounted on the base frame foi' operating the pivoted bar.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL DIXON.

Witnesses? :Crras. G. Hoovnn, W. M. MoAnonr.

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