IMPROVEMENTS IN APPARATUS FOR BORING
Year: 1870

page_text: PROVISIONAL SPECIFICATION left by Auguste Villepigue at the Office
of the Commissioners of Patents, with his Petition, on the 8th
March 1870.-A communication from abroad by Floran Ferdinnand
Villepigue, of 35, Rue Violet Grenelles, Paris, in the Empire of
France, Civil Engineer.
I, AUGUSTE VILLEPIGUE, of 4, Maismore Place, Park Road, Peckham,
in the County of Surrey, Civil Engineer, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN APPARATUS FOR BORING," com-
municated to me from abroad by Floran Ferdinnand Villepigue, of 35,
Rue Violet Grenelles, Paris, in the Empire of France, Civil Engineer,
to be as follows:-
-
The improvements have reference to the construction of apparatus
for boring purposes, and consist in so fashioning a rod or tool that
it shall be hollow and contain and work an inner rod or plunger, such
inner rod being capable of and having imparted to it a free fall or
up-and-down action by means of the hollow rod.
Also the construction of machinery for giving mechanically the
necessary rotary up-and-down and compensating movement of the rod
or rods as above or of boring rods generally.

page_text: The improvements may conveniently be carried into effect by making
a hollow tube of metal of any convenient length and diameter, the
upper part of which may be screwed in the ordinary way for con-
necting it to rods above, the lower part being open; along the side two
longitudinal slots or slits are formed for receiving the guide piece of
the plunger to be afterwards described, such slots or slits ending
at their upper and lower extremities about a foot or other convenient
distance from the top and the bottom of the hollow rod or tube, and
being furnished at their upper and lower extremities with an inclined
plane or surface formed on or by such slot or slit, such inclined planes
being for the purpose of giving a rotary up-and-down motion to the
inner plunger when in action. The inner plunger or rod may be of
metal and be furnished with a screwed top, by which in case of accident
it may be withdrawn from the hole, and the lower part fashioned to
receive or to screw onto the rod or cutting tool, and be furnished with
a guide or guides working in the slots or slits above mentioned. The
machinery for giving the necessary motion to the rod, or to boring
rods generally, may be constructed of metal in the shape of a disc fixed
horizontally on the rod, and furnished with connecting rods slightly
inclined and attached to a moveable horizontal upper toothed clutch,
a lower toothed clutch is fixed on the rod opposite the upper clutch
so that the rod in its ascent places the clutches in contact, and by
means of the connecting rods attached to the disc and upper clutch
the movement of the rod forces the connecting rods out of their ordinary
line of inclination, and as they are inclined more and more they give
the fixed disc the desired rotary movement, which is thus conveyed
to the rod. The compensating movement of the rod or rods may be
obtained by means of levers attached to a screwed spindle working
in or through a hollow nut or rod, and so fixed that each descent or
plunge of the rod causes the screwed spindle to lower itself and abutt
against a fixed point, so that the spindle and rod to which it is attached
descends more or less in proportion as the hole is drilled or bored.