A New or Improved Tool or Auger Bit.
Year: 1894

page_text: A New or Improved Tool or Auger Bit.
I, ARTHUR GEORGE BROWN, of New Road, Rayne, near Braintree, Essex,.
Mechanic, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement:―
My invention relates to a new or improved auger bit in which the cutters are
made separately and in various sizes to be attached to a common shank, the object.
being to provide an auger bit with which holes of various sizes can be cut, and
which will be extremely portable, as the cutters will occupy but little space and
only one shank is necessary.
In carrying my invention into practical effect, I make the cutters, which are of
the usual shape and form, in one piece, separate from the shank, and of different.
sizes, each furnished with a screw-threaded perforation by means of which any one
can be attached to the end of the shank which is screw-threaded for this purpose,.
the screw-threaded portion of the said shank passing completely through the
perforation in the cutter and acting as the leading screw for effecting an entrance
into the wood or material being acted upon, and further each cutter has one end of
a spiral, formed of wire or other suitable material, attached to it, the said spiral
surrounding the spindle or shank and serving to work out the shavings when boring
a hole.
By means of this device holes of various sizes may be bored by affixing a cutter
of the required size upon the sbank, or when the bit is to be used for one size only,
this invention will prove equally useful as the cutter when worn and no longer fit
for use can be replaced by a new one as before described.
In order that my invention may be more fully understood I will now proceed to.
describe same with reference to the accompanying drawings in which
Fig. 1 is a side elevation of an auger bit fitted with cutter and spiral complete.
Fig. 2 shows the removable cutter in plan and side view, and
Fig. 3 is a side elevation of the shank or stem.
My improved auger bit consists of the shank or stem s one end e of which is.
squared to enter an ordinary brace while the other is furnished with a tapering
screw threaded portions for the purpose of securing the removable cutter c to the
stems the said cutter screwing and bearing closely against the enlarged portion or
collar c of the said stem, the aforesaid cutters being furnished with a central
screw-threaded hole or perforation for this purpose. A spiral S one end of
which is attached to the cutter in any suitable manner surrounds the shank or
stem s and serves to clear the hole of shavings when in use, it is obvious, however,.
that this spiral may in some cases be dispensed with and the auger bit used
without it.
The cutters are made in various sizes and are so arranged that they may each be
attached to the common stems by means of the aforesaid screw-threaded hole or
perforation p, thereby economising space in packing, travelling &c., and enabling
boles of various sizes to be bored with one stem and a set of cutters.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The new or improved tool or auger bit consisting of the shank or stem s
furnished with a screwed portion s' and the cutter c, the said cutters to be formed

page_text: separately and in various sizes, substantially as herein described and shown and
for the purposes specified.
2. In combination with the tool or auger bit such as above described, the spiral S,
substantially as herein described and for the purposes specified.
3. The new or improved tool or auger bit arranged and constructed, substantially
as herein described and shown and for the purposes specified.
Dated this 1st dor of June 180A
F. G. CASSELL,
Of Cassell & Co.,
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.