Taper Boring Machine.
Year: 1899

page_text: Taper Boring Machine.
JOHN SMITH, 1, East Restalrig Terrace Leith, N.B., do hereby declare the
nature of this invention to be as follows:
This taper boring machine consists of a long boss or sleeve with worm or
any other kind of wheel on same for driving purposes, bored conically right
through, central at one end and eccentric at the other end, having a conical eccen-
tric or the like" fitted inside which is bored 'right through & carries the boring
bar with feed screw nut for automatic feed, thereby capable of boring a parallel
hole or a hole to any desired taper which is done by adjusting the conical eccen-
tric or the like causing the boring bar to be thrown from parallel to any eccen-
trical movement which when fed will gradually bore a tapered hole. The bar
carries the cutting tool at the end & performs its duty without having a bearing
on the outer end of the bar.
::
All the above is carried on a suitable bracket with bearings, driving shaft, worm
or other kind of wheel and fast and loose pulleys or handwheel & handle.
Dated this fith day of Nov 1899
JOHN SMITH, 1, East Restalrig Terrace. Leith, N.B., Commercial Manager,
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:
This machine consists of a long boss or sleeve A with worm or any other kind
of wheel on same for driving purposes, preferably made in one piece but can be
made in one or more pieces, bored tapered right through, central at one end and
eccentric at the other end, having a tapered eccentric B or the like fitted inside
which is bored right through, the hole being parallel from all parts of the outside
circumference of the above sleeve A when fixed in position for boring straight
holes, and carries the horing bar C with feed screw D and nut E for automatic
feed, thereby capable of boring a straight or parallel hole or a hole to any desired
taper, which is done by adjusting or turning round to any degree the tapered
eccentric B or the like, causing the boring bar C to be thrown from parallel to any
conical eccentric movement which when fed will gradually bore any degree of
tapered hole that may be required.

page_text: The bar carries the cutting tool F at the end and performs it's duty without
having a bearing on the outer end of the boring bar.
All the above is carried on a suitable bracket or arm G with bearings. driving
shaft H worm or other kind of wheel I and fast and loose pulleys J or handwheel
and handle. All is shewn in Fig. 1, 2 and 3, on accompanying drawing.
The above conical eccentric or the like movement" can be applied to all other
kinds of boring machines, or the like machines.
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. The boring or drilling holes from straight or parallel to any desired taper
from the above construction of machine, by adjusting the tapered eccentric which
carries the boring bar, and without interchanging any parts of the machine.
Second. The conical eccentric movement, or action which can be had from the
above or the like construction.
Third. The whole machine combined and substantially set forth and shown,
or any mere modification thereof.
Dated this lot do.
1000