IMPROVED APPARATUS FOR BORING BOILER TUBE HEADS, DRILLING ANGLE HOLES, OR CUTTING CIRCULAR GROOVES IN METALLIC SUBSTANCES
Year: 1866

page_text: LETTERS PATENT to William Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer, for the
Invention of "IMPROVED APPARATUS FOR BORING BOILER TUBE HEADS,
DRILLING ANGLE HOLES, OR CUTTING CIRCULAR GROOVES IN METALLIC
SUBSTANCES." A communication from abroad by James Miller, of the
City of New York United States of America
Sealed the 80th November 1866, and dated the 31st August 1866.
PROVISIONAL SPECIFICATION left by the said William Edward Newton
at the Office of the Commissioners of Patents, with his Petition, on the
31st August 1866.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex, Civil Engineer, do hereby declare the
nature of the said Invention for "IMPROVED APPARATUS FOR BORING BOILER
TUBE HEADS, DRILLING ANGLE HOLES, OR CUTTING CIRCULAR GROOVES IN METALLIC
SUBSTANCES," to be as follows:-
This Invention has for its object to cut, bore, or drill holes of any desired
size in boiler tube heads, or cutting grooves in any metallic substance.
The apparatus consists of a shaft, one end of which is fitted for the drilling
or boring machine. Upon the other end of the shaft is mounted a disc which
has a slot upon each side, in which slide blocks may be made to travel to and

page_text: fro by means of an adjusting screw. The cutters are carried in these slide
blocks by being inserted in holes through them, and are held firmly in place
by set screws. Each slide block has two holes through it to take a cutter,
one on the interior end of each, and one the exterior end of each. The
smallest hole is drilled by screwing the slide blocks to the full depth of the
slots in the disc and then placing the cutters in the interior holes. The
largest hole is drilled by screwing the slide blocks out towards the exterior of
the disc and placing the cutters in the outer holes. Two holes are made for
cutters in each slide block in order to get a greater range for the tool without
making it cumbersome. By moving the slide blocks outwards or inwards
according to their position a hole of any size may be drilled. Two
gauges are placed upon the disc, one at the side of each slide block, by these
the slide blocks carrying the cutters may be set accurately to drill a hole of
any desired size. The adjusting screws are inserted in smooth holes in the
disc, which holes are so placed as to expose the side of each screw in each
slot. A channel is cut in the interior end of each fixed screw, and keys
which fit these channels are inserted through the disc, thus holding the screws
firmly in place and yet permitting them to be freely turned. A thread cor-
responding to the thread of the screw is cut in the side of each slide block,
thus by turning the screws to the right or the left the slide blocks will advance
or recede. In the disc end of the shaft a hole is drilled to take a steel spring
which fits the hole in the shaft. A groove is cut in this centre, and a steady
pin is inserted near the base of the shaft, the interior end of which pin works
in this groove and prevents the centre from turning or falling out, while yet
permitting it to advance or recede according as pressure is placed upon the
spring or removed therefrom. The cutters are curved upon one side only, the
other sides being square. The disc is drilled on each side with a series of
holes to take an oil cup; oil may be fed with this into any circular groove,
being cut by placing the cup in the proper hole corresponding with the size
of such groove.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Edward Newton in the Great Seal Patent Office
on the 28th February 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirty-first day of August, in the year of our Lord
One thousand eight hundred and sixty-six, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Edward Newton, Her special licence that. I, the said William
Edward Newton, my executors, administrators, and assigns, or such others
as I, the said William Edward Newton, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and law-
fully might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVED APPARATUS FOR. BORING BOILER TUBE HEADS, DRILLING ANGLE
HOLES, OR CUTTING CIRCULAR GROOVES IN METALLIC SUBSTANCES," being a commu-
nication from abroad by James Miller, of the City of New York, United
States of America, upon the condition (amongst others) that I, the said
William Edward Newton, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar montlis next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Edward Newton, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawing hereunto annexed,
and to the letters and figures marked thereon (that is to say):-
This Invention of "improved apparatus for boring consists of an adjustable
cutter for boring boiler tube heads, drilling angle holes, or cutting circular
grooves in any metallic substance.
In the accompanying Drawing Fig. 1 is a side elevation of the improved
boring tool; Fig. 2 is a sectional plan, and Fig. 3 is an inverted plan or
under side view of the same; Fig. 3* is a side view of the sliding block C¹.
The boring tool consists of a shaft A, one end of which is adapted to fit the
drilling or boring machine; upon the other end is mounted a disc B, which
has a slot upon each side, in which slide blocks C and C' may be made to
travel to and fro by means of screws F, F, as seen in the plan views Figures 2
and 3. The cutters are carried in these slide blocks by being inserted in holes
through them, and are held firmly in place by the set screws D and D'. Each
slide block has two holes K, K, through it to take a cutter J, J', Fig. 1.

page_text: One of these holes is placed near the inner end of each slide block C, C¹, and
the other hole near the exterior end of each block. The smallest hole the
tool is capable of drilling is made by screwing the slide blocks C, C,.to.the
full depth of the slots in the disc B, and then placing the cutters in the holes
nearest the centre. The largest hole that can be drilled is produced by
screwing the slide blocks C, C¹, out towards the exterior of the disc B, and
placing the cutters in the outer holes. The two holes K, K, for cutters are
made in each slide block in order to get a greater range for the tool without
making it cumbersome. By moving the slide blocks C, C¹, outwards or
inwards according to their position, a hole of any desired size may be drilled.
Two gauges E and E¹, spaced to represent inches and fractions, as shewn in
the sectional plan view, Fig. 2, are placed upon the disc B, one at the side. of
each slide block C, C. The slide blocks which carry the cutters may by
means of these gauges be set accurately to drill a hole of any desired size
without further measurements. The fixed screws F and F¹ are inserted in
smooth holes in the disc, which holes are so placed as to expose the side of
each screw in each slot. A channel is cut in the interior end of each fixed
screw, and keys which fit these channels are inserted through the disc, thus
holding the screws firmly in place, and yet permitting them to be freely
turned. A thread corresponding to the thread of the screws F, F¹, is cut in
the side of each of the slide blocks C, C¹, so that by turning the screws to the
right or the left the slide blocks will be made to advance or recede. Jamb
keys G and G¹ are employed to lock the slide blocks C, C³, immovably when
the cutters are placed in any desired position. In the disc end of the shaft A
a hole is drilled to take the steel spiral spring
this spring thrusts upon the centre I, which is
hole in the shaft. A slot is cut through this centre, and a steady pin is
inserted near the base of the shaft, which pin by passing through this slot in
the centre prevents it from turning or falling out while yet permitting it to
advance or recede according as pressure is placed upon the spring or removed
therefrom. This arrangement of the centre obviates the necessity of drilling
a centre hole in tube sheets and in many other kinds of work where with the
tools heretofore used it has been necessary. The cutters J and J¹ are curved
upon one side only, the other sides being square.
them may be seen in the plan views, Figures 2
holes K in the slide blocks in which they are to be placed. This form of
cutter can be readily constructed, and when dull from use may be removed,
ground, and replaced with the utmost facility. The disc B is drilled on each
side with a series of holes L, Figures 2 and 8, to take an oil cup, shown
H, shown by dots in Fig. 1;
turned to accurately fit the
The shape of a section of
and 3, by examining the

page_text: detached at Fig. 4. Oil may be fed with this into any circular groove which
is being cut by placing the cup in the proper hole corresponding with the size
of such groove.
The hammer N shewn in the Drawing at Fig. 5 is for loosening or
tightening the jamb keys that lock the slide blocks; the small square O on
the end of the handle is for adjusting the fixed screws that move the slide
blocks C and C¹, and the square hole in the centre of the head is for loosening
or tightening the set screws that hold the cutters in place.
Having now described the Invention, and having explained the manner of
carrying the same into effect, as communicated to me by my foreign corre-
spondent, I claim as the Invention secured to me by Letters Patent as afore-
said the mode herein set forth of constructing adjustable drilling tools so that
they may be used for cutting or drilling holes or circular grooves of various
sizes.
In witness whereof, I, the said William Edward Newton, have hereunto
set my hand and seal, the Twenty-eighth day of February, in the year
of our Lord One thousand eight hundred and sixty-seven.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
W. E. NEWTON. (L.S.)