US149827A - Improvement in earth-boring machines - Google Patents

Description

2Sheets--Sheet1. B. X. BLAIR 8L l. A. PAUL.

Earth-Boring Machines. N0.l49,827. Patented April 21,1874.

Y fi fw,

f i .ZSheetsj-VSheetZ.- B.. X. BLAIR & 1,. A. PAUL.

'Earth-Boring Machines.

`N0.149,827, A PatentedApmzms74- yIl.

@iii UNITED STATES PATENT EEICE.

BRICE X. BLAlR AND JOHN A. PAUL, OF HUNTINGDON, PENNSYLVANIA.

iMRovEMENT |N EARTH-BoRlNe-MACHINES.

speeineanon forming 15m of Letters Patent No. 149,827, dane-a April 21,1814,l appnoanonniefi January 17, 1874.

To all whom it may concern: Be it known that we, BEIGE X. BLAIR and tion of the same, reference being had to theannexed drawings making apart of this specication, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a representation of a sectional view of our earth-boring machinei Fig. 2 is a plan view of the same. Figs. 3 and 4 are detail views.

This invention relates to certain novel improvements in machinery for boring-holes into the earth for setting posts, and for other purposes. Our objects are, mainly, to automatically stop the forward movement of the machine when it arrives at the proper places for boring the holes, thereby enabling us to make the holes at regular distances apart; also, to utilize the draft of the teamwhich draws the machine from one place to another for actuating the auger, as will be hereinafter explained.

The following is a description of our iinprovements v In the annexed drawings, A represents th horizontal bed of the 1n achine, which is mounted ion two rear transporting wheels, B B, and a front easter guide-wheel, B1, the vertical shaft of which latter' has a spurred segment, a, on it, with which engages an endless screw, al, on the front end of an inclined rod, a2. This rod is mounted in suitable bearings on the carriage-bed A, and has a crank-handle on its rear end,'by turning which the machine can be guided. C designates an upright frame, which rises from the carriage-bed near one end, and is steadied by means of inclined braces c c. C is the augershaft, which is guided below by the carriagebed, and above by the cross-head of frame C. The upper portion of this shaft C has a helical groove, d, in it, which receives, at times, the end of a spring-pin, d', to which a hand-lever, D, is pivoted. When pin d is in its 'groove d, rotation given tothe shaft C will cause this shaft to descend, and the pin d will be held by a spring-catch, e, which engages with lever D "When the shaft Ghas `descended as far as required, a collar, e', ony this shaft will depress the latch orcatch e, thus releasing the. lever D, and allowing pin d to spring out of its groove d, which willfstop the farther descentof the auger-shaft. Collar e is adjustable for boring holes of different depths. Shaft C( receives rotation from a pulley, f, which is on a horizontal v shaft, E, mounted in journalboxes on the carriage-bed A. This pulley is loosely applied on its shaft, but engaged with it by means of a sliding double clutch, g, which is adjustable by means of a lever, g1, connecting rod, g2, and a vibrating hand lever, g", which latter can be fixed in any one of three positions by means of notches z' in a bracket,

h. An endless belt, fl, passes around pulleyl f, and also around a pulley, f2, which is applied on the auger-shaft C', and connected to this shaft by means of la feather and groove. Theupper end of the auger-shaft C is connected by a collar, j, to the cross-head of a verticallymovable frame, H, which hasrack-teeth on it, that engage with Vtwo pinion-wheels, k k, on a shaft, 7c. The uprights of frame H areV guided in the cross-head of frame C, and the shaft k', which has its bearings on this cross-head, carries on one end a pulley, Z, over which abelt, lr', passes, that leads from a pulley, m, on shaft E. Pulley mis applied loosely on its shaft, but engaged with it, when it is desired to raise, the auger-shaft, by means of the clutch g. On the shaftE is keyed a windlass, fn, and a ratchetwheel, o. T he windlass u has radial handles applied to it for winding upon it a draft-rope,

p, and taking up the slaekbf this rope after A each operation of boring ahole. This rope eX- tends 'forward over the carriage bed, and through a staple, 2, and is hitched to the draftteam, or to a draft-engine, and it is through the medium of this rope that the auger-shaft is rotated, as will be hereinafter explained. J designates a toothed wheel of any suitable diarneter, the shaft of which has its bearings in the free end of a frame, J which is pivoted to the rear cross-beam of the carriage-bed A.

.Wheel J engages, when depressed, with a pinion, Von the shaft R, to which the wheels B B are secured. Surrounding the shaft of wheel J is a convolute spring, s, one end of which is secured to this wheel, and the other end to frame J This spring is designed to throw the wheel J back to its normalv position when the boring-shaft ceasesto operate. is applied into one of many holes through wheel J, which pin is adjustable into any one of these holes, and it is designed for checking the forward rotation of its wheel against a stop, q, when it is desired to bore ahole. Another pin, t, is xed'into one of the spokes of wheel J on the opposite side of this wheel. The object of pin t is to release the ratchet-wheel o on shaft E from pawl L, and allow this shaft to rotate when it is desired to unwind the rope p from the windlass a. K designates a curved handlever, which is pivoted to the rear side of one of the uprights of frame C, and connected, by a rod, r, to the free end of frame J The lever K can be fixed in a depressed position, or in an elevated position, by adjusting it into notches formed in an arc, N, secured to frame C.

To operate the machine, the rope is first wound upon the windlass n. The animals are hitched close to the front end of the carriageframe. WheelJ is depressed, after properly adjusting pin t, and hand-lever D is adjusted in front ofthe spring-catch e. The attendant then grasps the crank on rod a2 for guiding the machine, and starts the animals. As the :machine is moved forward the wheel J will be slowly turned in the direction indicated by the arrow in Fig. 1, until pin t strikes the rear end of pawl L, when the windl ass a, with its ratchet, will be released from this pawl, and the forward movement of the machine will instantly cease. The animals proceed to unwind rope p from its windlass, and the motion thus 0btained is transferred to the augershaft by moving clutch g into gear with wheel f. When the proper depth of hole has been made, the operator shifts the clutch to the Wheelm,which actuates the frame H, and lifts the auger out of its hole.

A pin, q,

We should have previously stated that wheel J should be released from pinion o at the moment the windlass is released from its pawl L. Also, that when the auger has descended as far as desired, the collar e on shaft C will depress the latch e, and disengage. pin d from the groove in said shaft, and stop the descent of the same.

When a hole has been bored, and the auger raised out of it, the slack of rope p is wound upon windlass n, and the several parts of the machine are adjusted as above described, for another operation.

What we claim as new, and desirev to secure by Letters Patent, is

1. In an earth-boring machine, the windlass n, ratchet-Wheel o, and pawl L, in combination with the spur-wheel J on frame J spring s, pins q t, lever K, connecting rod r, and the pinion spur-wheel U on axle B, substantially as and for the purposes described.

2. The spring-'pin d', lever D, catch e, collar e', combined with an auger-shaft, C, having a screw-shaped groove, d, in it, substantially as described. f

3. The lifting-frame H, combined with the auger-shaft C', and with pulleys Z m and shifting-clutch g on windlass-shaft E, substantially as described.

4. The pulleys f f 2, windlass n, clutch g, ratchet-wheel o, pawl L, and draft-ropep,'con1 billed in Va boring1nachine, substantially as described, and for the purposes set forth.

In testimony that we claim the above we have hereunto subscribed our names in the lpresence of two witnesses.

BRIGEX. BLAIR. JOHN A. PAUL.

IVitnesses:

T. W. MYTON, J. C. BLAIR.

Images