AN IMPROVED ADJUSTABLE BORING TOOL FOR STANDARD SIZES, APPLICABLE ALSO FOR TURNING AND OTHER PURPOSES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
WILLIAM MORLING Engineer 1, River Terrace Queens Road Hammersmith do
hereby declare the nature of my invention for "AN IMPROVED ADJUSTABLE
BORING TOOL FOR STANDARD SIZES, APPLICABLE ALSO FOR TURNING AND OTHER
PURPOSES," to be as follows:-
It consists of a circular cutter or cutters in a slotted bar, fixed in the bar by a
screw or screws which passes or pass through the centre of the cutter or cutters
aforesaid so made that when the cutting edges become worn, the screw or screws.
can be slacked and the cutter or cutters moved round so that a sharp portion is
again presented.
COMPLETE SPECIFICATION.
I WILLIAM MORLING of 1 River Terrace Queens Road in the parish of
Hammersmith in the County of Middlesex, Engineer do hereby declare the
nature of my said invention for "AN IMPROVED ADJUSTABLE BORING TOOL FOR
STANDARD SIZES, APPLICABLE ALSO FOR TURNING AND OTHER PURPOSES," and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My boring tool consists of a circular cutter or cutters fixed in the end of a
slotted bar by a screw or screws passing through the centre of the cutters or

page_text: cutters aforesaid, and so arranged that when the cutting edges becomes worn, the
screw or screws can be slacked and the cutter or cutters moved round on the
pivotting pin so that a fresh cutting edge is again presented, thus ensuring that all
holes bored shall be one exact size.
In order that my invention may be fully understood I will more particularly
describe it with the aid of the accompanying drawing on which similar parts are
marked with like letters of reference.
Figs. 1 and 2 are front and side elevations respectively of my boring tool and
Fig. 8 is a plan thereof. Fig. 4 is a sectional plan through the pivotting pin.
Figs 5 and 6 are front elevation and plan respectively of the slotted bar and
Figs. 7 and 8 are elevations of the circular cutter.
Referring to these figures A designates the slotted bar B the circular cutter and
C the pivotting pin. The cutter B is chamfered away on its periphery in opposite
directions for half its circumference so that it presents two cutting edges b. b. The
sides of the jaw of the slotted bar A are slightly cut away next to the cutting edge
of the cutter so as to provide clearence. The jaw end of the bar is made only a
fractional degree smaller in diameter than the cutter.
As before mentioned two cutters may be used instead of one, and they may be
either placed side by side pivotted on the same pin, the one being chamfered to cut
on one side and the other on the other side; or they may be pivotted on separate
pins arranged side by side in the same plane each cutter being chamfered to cut on
opposite sides to the other.
Instead of mounting the cutter or cutters in the jaw end of a slotted bar they
may be mounted on the end of a plain bar by an overhung pin.
It will be understood that although this tool is specially designed for boring
purposes it is equally well adapted for turning and other purposes.
It will be seen that all that is necessary to present a new cutting edge is to Black
the pivotting pin, give the cutter a slight turn, and again tighten the pin.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
First. An adjustable boring tool for standard sizes consisting of a circular,
cutter pivotted in the end of a slotted bar constructed, arranged and operating as
herein before described and shown.
Secondly. A circular cutter constructed, arranged, and operating, as herein before
described and shown.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers,
70, 71 & 72, Chancery Lane, W.C.,
Agent for the Applicant.