A NEW OR IMPROVED HAND BORING MACHINE
Year: 1874

page_text: PROVISIONAL SPECIFICATION left by Jean Joseph Hutinct at the
Office of the Commissioners of Patents, with his Petition, on the
i 21st March 1874:
I, JEAN JOSEPH HUTINET, of 2, Rue Sainte Appoline, Paris (France),
do hereby declare the nature of the said Invention for "A NEW OR
IMPROVED HAND BORING MACHINE," to be as follows:-
According to this Invention the machine is made with a table having
by preference three legs for supporting it, it is also provided with a lug
for a vice to hold it in order to firmly hold the machine during its
operation, the machine may however be held on a frame having conical
cavities for the reception of the feet. The table is also cast with a
hollow cylinder at its lower part, and the top of the table has a pedestal
or socket to receive and to support an upright column or post on, which
there is a sleeve free to be moved up and down thereon when required,
and provided with a set screw for fixing it in any desired position on its
column. To the movable sleeve is fixed or cast therewith an arm. . The
outer end of arm opposite the sleeve is provided with a tool holder into
which the tool is fixed by means of a set screw. The tool holder shaft

page_text: carries a bevilled pinion at top which gears into a toothed wheel, the
axis of which is carried by an extension of the arm.
'The toothed wheel
has a handle for communicating rotary motion to it and through the
pinion to the boring tool. The hollow tube in the centre of table
receives a rod carrying a platform at top, and having at bottom another
and guiding rod which slides in a hole formed in the table; this rod rises
and falls with the platform aforesaid and prevents it from turning.
There is a mortise in the platform supporting rod and a groove in the
tube in which the end of a lever is free to work, having its fulcrum and
being free to oscillate on a support for that purpose; the other end of
this lever carries a cushion or bearing to receive the pressure of the left
arm to direct it to the right or left, according to the position of the left
arm, which holds with the fingers the article to be bored placed on the
platform.
.
.
".
To bore with this machine I place the article to be bored on the plat-
form holding it there with the fingers of the left hand, and the left arm
pressed on the bearing piece on the lever causes the platform to rise and
to press the piece to be bored under the tool, the right hand com-
municates a rotary motion to the handle and wheels as well as the boring
tool which is thus caused to bore a hole very well and quickly.
A strap may be used instead of the cushion piece on lever, and a rod
in connection with a treadle for communicating the upward pressure to
the platform by the foot.
The table may be cast with the arms carrying the toothed wheel, and
the tool holder or this arm could be brought to the table by means of
other suitable equivalent mechanical adjustments.
The tool carrier may in some cases be arranged to have a descending
motion, then varying the different parts to adapt them to the specialities
of the work required.
The machine may carry if desired a cutter, or facing tool, a small
grindstone, or other articles useful in mechanism having a rotary motion
imparted to them as to the boring tool described.