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Publication numberUS269548 A
Publication typeGrant
Publication dateDec 26, 1882
Filing dateJul 5, 1882
Publication numberUS 269548 A, US 269548A, US-A-269548, US269548 A, US269548A
InventorsWilliam Stephenson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
William stephenson
US 269548 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



Patented Deo. 26, 1882.

N. PETERS. Phommhogmpmr. washmgmu. '1c




SPECIFICATION forming part of Letters Patent No. 269,548, dated December 26, 1882.

Application tiled July 5,1882. (No model.) Patented in Canada March i2, 1881, No. 12,494.

T o all whom it may concern Be it known that I, WILLIAM STEPHENsoN, of Hamilton, in the county of Wentworth, in the Province of Ontario, Dominion ot' Canada, have invented certain new and useful Improvements in Post-Hole Angers; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, forming part of this specification. A

Figure l represents a perspective view oi' my invention with the stock broken away; Fig. 2, an inverted perspective view of Fig. l; Fig. 3, a vertical central section. Y

This invention relates to improvements in angers for boring post holes in the ground, and has for its object to improve the details of construction and provide a ground-auger; which is simple in construction and very efficient in operation.

I'he object of my invention I accomplish by thc construction and union of parts illustrated in the accompanying drawings, which I will proceed to describe in detail, afterward pointing` ont in the claims the specific improvements which constitute my invention.

The letter A indicates the tubular stock, composed ot' gas-pipe screw-threaded at one end, as at A', to screw into'the center or hub C of the disk C', which is threaded to receive I it; and B, the tubular handle, secured to the stock. The disk C is made of malleable iron, provided with two openings, b b, each faced with a steel lbit or cutter, D, riveted to one side ot' each opening. The steel bits or cutters D are each constructed with a cuttingedge, c, turned up nearly at right angles to the bit to form a sharp cutting-.edge to cut the earth clean in boring the post-hole.

The letters cl d indicate the lateral ventilatingopenings in the hub O and under the disk to supply air through the tubular handle and stock to the under side of the cutting-disk; and E indicates the screw point, having threaded shank E', which is screwed into the under side of the hub of thedisk, which hub is threaded to receive it. This point is of mal- |leable cast-iron, and is constructed with direct tapers specially adapted for the purpose of rapid and easy earth-boring; and it will be seen that the said screw tapers gradually on the outside from the base to the point, the central or grooved portion from g g and the thread h being' constructed to gradually taper from the base at l1J to a point, e, at the extreme end. This form ot' screw-point I have foundl by experience possesses efficient working qualities, and is capable of boring successtully in the hardest ground with less labor and more speed than can be done` with other post-hole angers.

I am aware of Letters Patent No. 160,648, and do not wish to be understood as claiming whatis therein shown and described. My construction differs from it in that I form the transverse air-openings d d directly through the under part of the hub O, and I thereby avoid drilling lateral holes in the screw-point, whicirwould weaken and render it liable to become easily fractured or broken.

Having thus described my invention,what I vclaim is 1. A ground-auger consisting of a radiallyslotted disk formed integral with a hollow hub, which projects from its opposite sides, that part ot' the hub on the under side of the disk being transversely perforated and receiving the screw-point, and the other part of the hub on the ripper side of the disk receiving the hollow stem havingthehollowhandle,substan tial] y as described.

2. A ground-auger composed of a radially: slotted disk formed integral with a central hollow hub, which projects from its opposite sides, each projecting partof the hub beinginteriorly on the under side ofthe disk bcingtransversely perforated, substantially as and for the purpose described.

Dated at Hamilton, Ontario, Dominion of Canada, this 29th day of Marcil, 1882.


In presence of- JULIEN R. SEAVEY, WM. BRUCE.

screw-th readed, and th at part of the h ub formedI

Referenced by
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US2485123 *Jul 15, 1944Oct 18, 1949Pinchos E MedwedIce drill
US4981000 *Dec 15, 1989Jan 1, 1991A. B. Chance CompanyPenetration of power installed anchor
US6250403Sep 30, 1997Jun 26, 2001The Charles Machine Works, Inc.Device and method for enlarging a Bore
US8839571Mar 14, 2013Sep 23, 2014Hubbell IncorporatedBreak-away screw ground anchor
US9133595Dec 3, 2013Sep 15, 2015Hubbell IncorporatedBent blade screw ground anchor
WO1991009179A1 *Sep 12, 1990Jun 27, 1991A.B. Chance CompanyImproved penetration of power installed anchor
Cooperative ClassificationE21B10/44