US132830A - Improvement in earth-augers - Google Patents

Description

T. C. HARRIS.

Improvement in Earth-Augers.

Patented Nov. 5,1872'.

uneutnr:

gtturueg 4M. PHUD-L/YHOGRPNIC CIINKMSBURNE'S PROCESS.)

UNITED STATES PATENT OFFICE.

THOMAS C. HARRIS, OF DRESDEN DEEP RIVER, IOWA, ASSIGNOR TO HIM- SELF AND AMOS TAYLOR, OF SAME PLACE.

IMPROVEMENT IN EARTH-AUGERS.

To all lwhom it may concer-n:

Be it known that I, THOMAS C. HARRIS, of Dresden Deep River, in the county of Poweshiek and State of Iowa, have invented a new and useful Improvement in Tell-Boring Apparatus, of'which the following is a specifica-1 tion:

My invention comprises certain improvements in the construction of the auger of well boring apparatus, all of which will be particularly described and pointed out in the following specification and claims.

Figure l is a side elevation of the capsta and the auger, and sectional elevation of the derrick, a small portion of the auger being broken out to show the manner of allowing air to flow under the blades and relieve them of atmospheric pressure. Fig. 2 is a top view of the auger. Fig. 3 is a detail view of the connection of the air-passage caps to the disk. Fig. 4 is a plan of the bottom of the auger, showing the construction and arrangement of the nut which secures the disk to the shaft.

I propose to make a large portion of the disk A, in front of each lip B, of thin springsteel plate, C, and attach said parts to the thicker parts A rigidly, by riveting them or otherwise, as clearly shown in Fig. 2, by which I have a much more efficient and durable, as well as cheaper, arrangement than that in which the corresponding parts of thick and strong metal are hinged to the parts A. In this case the spring-plates yield sufficiently to allow the large stones to pass up with the earth raised by the bits, and they return to and retain their position for holding the earth when the auger is lifted out of the well much better than the hinged parts. D represents vertical lips of considerable height, which Il propose to apply to the edges of the disk immediately behind the lips B by bending the lower ends under the disk and riveting them to the disk, as shown at E, and I further support them by the wide strong plates F extending from their rear edges to the braces G, as shown, and I curve these plates inward and attach them to the inner sides of said braces, so that the earth forced backward on the auger will pass and not obstruct the turning of the auger, as it would if allowed to come against the front of said braces. `These braces are made of gas-tube or other like tubing, and the disk A has h'les Where they are attached so that air can flow down under the auger to prevent the forming of a vacuum below when the auger is raised', and below these holes I place the bow-shaped spring-cap plates H, which I rivet or bolt to the under side of the disk A at their front ends, and connect by a slotted or elongated hole, I, Fig. 3, at the other ends, with a headed bolt, K, so that they can slide back and forth as said caps spring up to the disk, when the auger is boring, to close the holes'fand protect them from clogging, and spring'away again to open the holes and admit the air as soon as the auger is slightly lifted. 1 The braces are attached at the upper end to a horizontal plate, L, through the center of which the auger-shaft M passes. Said plate has holes through which the said braces pass, so that the air is admitted freely to the tubes. In practice, said braces will probably be secured 'by nuts on them screwed against the plate, one on each side. Above this plateL isanother one, N, on the shaft. M,

for preventing particles of earth from falling into the tubes and clogging them up. This latter covering-plate is permanently attached to the shaft; but the plate L is not attached, in order that lthe shaft may be readily taken out of the auger-disk, to which it is connected by passing through a hole in its center, also through a strong bar, O, on the upper side of the disk, and receiving a nut, P, below which said nut is reduced as nearly to a point at the lower side as it can well be, with two pointed ends, which are adjusted so as to point to the inner ends of the lips B, as shown, by which said nut is adapted for ymore readily entering the earth between the stones and Workin g them towardthe lips so as to pass up over them readily.

Having thus described my invention,'I claim as new and desire to secure by Letters Iatent 1. The vertical lips attached to the disk A in the manner described, and stayed by the brace-plates F and braces G, substantially as specified. l

2. The brace-plates F, arranged relatively to braces G, as specified, for preventing the and auger-shaft M, all arranged substantially clogging of the earth by said braces, substanas specified.

tiall-y as described. 6. The described construction of the nut P, 3. The combination, Withthe ducts, for adand relative arrangement thereof With the lips initting air below the disk of the spring-pro- B, as specified. Y

tecting caps H, substantially as specified. THOMAS, C. HARRIS.

4. The caps rigidly attached to the disk at the front ends, and connected at the rear ends Witnesses:

so as to be capable of moving, as specified. S. Q. GALICINS,

5. The tubular braces G, disk A, plate L, NV. B. SPENCER.

Images