IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BORING ROCKS AND SUCH LIKE HARD SUBSTANCES
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by Matthew Augustus Soul at the
Office of the Commissioners of Patents, with his Petition, on the
1st July 1872. A communication from abroad by Martin Neuerberg,
of the Machine Manufacturing Company "Humbold," late Sievers
and Co., of Kalk, near Cologne, in the Empire of Germany.
I, MATTHEW AUGUSTUS SOUL, of No. 6, Southampton Buildings,
Chancery Lane, London, in the County of Middlesex, Consulting
Engineer and Patent Agent, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BORING ROCKS
AND SUCH LIKE HARD SUBSTANCES," a communication from Martin Neuerberg,
of the Machine Manufacturing Company "Humbold," late Sievers
and Co., of Kalk, near Cologne, in the Empire of Germany, to be as
follows:-
This Invention consists in a peculiar arrangement of mechanism for
rock boring machines for the purposes, firstly, of guiding the piston;
secondly, of turning the borer; and thirdly, of feeding forward the borer
in proportion to its penetration of the rock or similar hard substance
to be bored.

page_text: The nature of this Invention will be best understood by reference to
the Drawings accompanying this Provisional Specification.
I. A, A, is a cylinder in which a piston B moves. This piston has
on one end a thick rod B¹, on the other a thinner one Bч. Both of
these rods go air tight, the one through the bottom, and other through
the cover of the cylinder. On the end of the thick rod the boring
chisel C is fixed by means of wedges. The end of the rod B¹¹ carries a
ring c together with a turning joint c¹. This ring turns slightly round
the rod and is kept in position by the nut d; gearing together with the
turning joint c is a rod D whose opposite end goes through a long box E.
This box constitutes one end of a lever of the first order fastened on an
axis E¹, and whose other arm E" gears with a slot of the valve rod F.
The valve rod F encompasses the three forked slide valve F' which covers.
the air channels f, f,f", in the cylinder A. The compressed air or the
steam which is to set the machine working is conducted by the tube G
and cock H and comes through the channel f under the steam dis-
tributor F", and from thence through the channel f¹ behind the piston B,
pushing the same forward. By this the rod D in the box E is moved
and the axis E turned round a certain angle. The arm E¹ moves a
part of its way without doing any work in the slot of the valve rod F and
advances the slide towards the end of the piston's stroke, so that it is
placed upon the channels f, f¹, f", and reverses the piston. The fresh
air or the steam will now stream through the channel f" and throw it
back, while the air first used goes back through the channel and
escapes through the open valve chest. When the piston returns towards
the end of the stroke the steam distributor is put in the former position
as represented in the plan, and thus the working of the piston begins
anew.
-
II. The thinner rod B₁ goes through a box j.which is adjusted air
tight in the cover of the cylinder and can turn in it. In this box there
is a salient wedge i, adapted to a furrow grooved along the rod. On
the box ja ratchet wheel K with small teeth is fixed. At one end
of the axis E there is a short lever L. It gears with a rod L' led in
a straight line by two guides 1, l. On the rod L' is fixed a catch M
gearing with the wheel K, and pushing it forward at every stroke of the
piston one or more teeth. The wheel K is prevented from turning in
the opposite direction by the paul N. By the rotation of the wheel K
the rod B" and therewith the borer is turned by jerks backward at every
stroke of the piston.

page_text: III. On the rod L' there is a second catch M¹ gearing with a
wheel K' fixed upon a box m, m, whose inside is provided with a worm
or screw. This box is the nut of a screw O, O, which with the spindle
screw O¹, O¹, constitute a frame connected at its ends by cross pieces
on which the cylinder rests by means of the four pieces a, a, a, a. One
of these pieces a, is placed round the box m, m, by turning this latter
the cylinder A, A, moves along the screwed spindles O¹, O¹. Now the
ratchet wheel K being so divided that one tooth exactly corresponds to
one full stroke of the piston, the catch M³ will turn the wheel K' only
when the piston goes the full length of its stroke. As long therefore as
the borer does not pierce the rock the cylinder A of the machine is not
moved but is kept at rest, but upon the borer entering the rock the
cylinder is moved after it in the same proportion as the borer penetrates
the rock. In order to move the cylinder back the little conic cog
wheels P, P, and the crank Q are provided. This moving back is done
by hand.