IMPROVE- MENTS IN CUTTERS EMPLOYED IN HORIZONTAL AND VERTICAL BORING MACHINES
Year: 1883

page_text: "
LETTERS PATENT to Josiah Wade, of the Crown Works, Halifax in thé
County of York, Printing Machine Maker for an Invention of IMPROVE-
MENTS IN CUTTERS EMPLOYED IN HORIZONTAL AND VERTICAL BORING
MACHINES "
PROVISIONAL SPECIFICATION left by the said Josiah "Wade at the Office
of the Commissioners of Patents on the 30th March 1883..
JOSIAH WADE of the Crown Works, Halifax in the County of York, Printing
Machine Maker, "IMPROVEMENTS IN CUTTERS EMPLOYED IN HORIZONTAL AND
VERTICAL BORING MACHINES"
The object of my Invention is the construction of an adjustable cutter, composed
of two parts, for the purpose of boring holes of different diameters with great
accuracy and truth. For this purpose I use a piece of steel through the certre of
which is bored (by preference) a taper hole. The cutter is then cut into two equal
lengths, and placed into a slot formed in the cutter bar and held firmly therein
against a boss formed on the bar by an adjustable washer and nut. In order to
adjust the cutter so that holes of exact diameter may be bored, a set-screw is
employed, passing through the cutter bar, and entering the hole formed in the split
cutter, whereby the two halves of the said cutter are forced out endwise, causing
them to project further beyond the bar, the distance required. By turning the
set screw slightly around the cutters are elongated, whereby holes can be readily.
bored to the exact size required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Josiah Wade in the Great Seal Patent Office on the 28th September
1883.
<
JOSIAH WADE of the Crown Works, Halifax in the County of York Printing
Machine Maker 'IMPROVEMENTS IN CUTTERS EMPLOYED. IN HORIZONTAL AND
VERTICAL BORING MACHINES
"
The object of my Invention is the construction of an adjustable cutter, composed
of two parts, for the purpose of boring holes of different diameters with great
accuracy and truth.
For this purpose I use a piece of steel forming the cutter,
through the centre of which is bored (by preference) a taper hole.
The cutter is then cut into two equal lengths, and Iplaced into a slot formed in
the cutter bar and held firmly therein against a boss formed on the bar, by an
adjustable washer and nut. In order to adjust the cutter so that holes of exact
diameter may be bored, a set screw is employed passing through the cutter bar, and
entering the taper hole formed in the centre of the split cutter, whereby the two
halves of the said cutter are forced tout endwise, causing them to project further
beyond the periphery of the bar, the distance required:
། !
I
Such being the nature, and object of my Invention, I will now proceed to
describe the same more fully, and by the aid of Drawings to illustrate the peculiar
character of my Improvements.
Fig 1 on the accompanying Drawings is an elevation of the apparatus I employ,
Fig 2 longitudinal section. Fig 3 cross section. Fig 4 end elevation, and Fig 5 plan
of same.
. 1
A is the cutter bar having a collar B and screw thread O thereon. Through the
said cutter bar a slot is cut, of the same width as the cutters D and E both of
which are inserted in the said slot as shewn on the Drawings and kept steady and
free from latteral movement by means of a 'loose washer or collar G and nut H,
forcing the said cutters against the collar. B. A groove is also cut in the boss B
and washer G to receive the two sides of the cutters, as seen more clearly in plan
Fig 5 which absolutely prevents any movement of the cutters after having once
been set. To adjust the cutters and obtain the exact size required to bore a hole
of a given diameter, a taper set screw or pin I is employed passing through the
cutter bar and acting against the taper hole at the meeting ends of the two cutters
whereby the two halves of the said cutter are forced asunder or endwise apart, in
such manner as to cause the cutting edges thereof to project further beyond the
periphery of the cutter bar, and this can be done and regulated to the greatest
nicety by turning the set screw I slightly around.
L
י,
In some cases I prefer to employ a long boss or cutter box J'where the collar B
forms a part thereof, both of which are slipped onto the cutter. bar A as shewn in
section Fig 6. The washer G and nut H are placed upon the said long boss or
cutter box J instead of being placed upon the bar as previously explained, but the
cutters are forced apart by the set screw, as already described. The long boss or
cutter box is prevented from slipping end wise upon the bar, by the pins M. inserted
in the cutter bar and which not only bear against each end of the long boss, but
may enter grooves formed therein in the same manner as the cutters do.
Another method of opening the cutters is shewn at Figs 7 and 8, where the
washer G is provided with cam surfaces c and d acting underneath tapered
projections a and b formed on each cutter. When the cutters require adjusting,
the nut H is slackened and the collar G turned partially around, whereby the
cutters are either brought nearer together or further apart according to
requirement,

page_text: Instead of employing a set screw or cam surfaces to open the divided cutter,
I may use a taper nut K fitting underneath tapered projections a and b formed
on the edge of each cutter as shewn at Fig 9 where it will be observed that
on the nut being screwed further up, that the cutters will be opened thereby.
The form of cutter herein shewn and described may be employed in any of the
well known machines for boring and drilling metals, whether horizontal or vertical,
and will be found of great advantage over existing forms of cutters, and very much
cheaper.
Having now shewn and described my Invention and the manner in which the
same is to be performed and put into practice, I would have it understood that I
do not limit nor confine myself to the exact details herein shewn and described as
these may be varied without departing from the peculiar character of my
Invention what therefore I claim is-
The use and employment of adjustable cutters formed, arranged and operated in
the manner substantially as herein shewn and described.
In witness whereof I the said Josiah Wade have hereunto set my hand and
Beal this eighteenth day of August in the year of our Lord, One thousand, eight
hundred and eighty three.
TONTTY
תנו
(L.S.)