US306907A

US306907A - William m

Info

Publication number: US306907A
Authority: US
Publication date: 1884-10-21
Anticipated expiration: 1901-10-21

Description

(No Model.)

W. M. DIMITT.

AUGER BIT. No. 306,907. Patented 00c. 21, 1884.

WITNESSES: I DIVENTOR:

ATTGRNEYS.

UNITED STATES PATENT ()FFICE'.

WILLIAM M. DIMIT'I, OF MARTINSVILLE, OHIO, ASSIGNOR OF ONE-HALF TO CHARLES H. IRWIN, OF SAME PLACE.

AUGER-BI'T.

SPECIFICATION forming part of Letters Patent No. 306,907, dated October 21, 1884.

Application tiled June {30, 1ss4. (No model.) I

10 all whom 1125 mm 1 concern:

Be it known that I, WILLIAM H. DIMITT. of Martinsville, in the county of Clinton and State of Ohio, have invented certain new and useful Improvements in Auger-Bits, of which the following is a full, clear, and exact deseription.

This invention consists in a solid center-stem auger bit, substantially as hereinafter described and claimed, and \Vhlt'h not only possesses greater stiffness and strength than the ordinary bit, but which provides a much readier clearance for the chips, and is therefore not so liable to choke, may be much more easily worked and sharpened or repaired; also makes a clear or smooth out.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in a l the figures.

Figure 1 represents a longitudinal view of a single twist auger-bit embodying my invention; Fig. 2. a front end View of the same; Fig. 3, a cross-section thereof onthe line .70 x in Fig. l, and Fig. 4 a longitudinal section of the forward end of the bit on the line y y in Fig. 1.

in the accompanying drawings, A indicates a solid center-bit stem mounted or formed with asingle-twist blade, B, which is an integral portion of the bit and forms a quick flat screwthread around the solid center stem that terminates at its forward end in a gimlet-screw, b.

From this description it will be seen that this auger bit has but one edge or side out.

A hole can be made by it much more easily. o speedily, and smoothly titan ispractirable with the ordinary double-twist bit having no so.id central stem. and a much larger, quicker, and

re ruier escape passage for the chips or borings is provided, thereby reducing the liability to 5 choke. Much greiter facility, too, is afforded for sharpening and re a ring the bit. Thus, being made with a solid central stem, the bit may be broken or cutaway at any point in the twist and a new end gitnlet-srrew and cuttingedge be formed, which cannot be done with angers having no solid central stem. The central stem, too, adds materially t0 the stiffness and strength of the bit.

The invent-ion is applicable alike both to hand and machine angers. When applied to machine use. it may be run with very much less power than the angers in ordinary use.

Havingthus described my invention, I claim as new and desire to secure by Letters Patent The solid auger-bit comprising the central stem havingthesingleconvoluted blade formed with a single chisel or knife edge cutter, said cutter being disposed at one Side of the stem and at the lower end of the bla le, substantially as shown and descri-bed,and for the purpose set forth.

WILLIAM M. DIMIT'I.

Witnesses:

J. D. OUsLEY, W. W. WALKER.