Improvements in Apparatus for Deep Boring.
Year: 1899

page_text: Date of Application, 16th Jan., 1899-Accepted, 18th Feb., 1899
COMPLETE SPECIFICATION.
Improvements in Apparatus for Deep Boring.
I, JOSEPH VOGT, of Massevaux, Alsace, Germany, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
This invention relates to improvements in apparatus for boring at great depths in
which the boring tool or cutter is rigidly connected to the bore rod which is
actuated by a rocking beam.
I will describe my improvements with reference to the accompanying drawing
in which, by way of example they are applied to a construction of boring apparatus
similar to that described in the Specification to Patent No. 30024 of December 18th
1897, in which springs are interposed between the bore rod and the actuating
beam, as also between this and the driving connecting rod.
Figs. 1 and 2 shew respectively a side view and a front view of the apparatus,
both views being partly in section.
Figs. 3 and 4 shew to a larger scale detail views of parts of the apparatus.
The oscillating beam A which raises the bore rod P is actuated by the connecting
rod B receiving its motion from the crank shaft C. The trunnions a of the beam
are suspended by means of two screws DD held by screw nuts b carried by the
sliding support E which can be shifted horizontally upon the uprights F by means
of a horizontal screw spindle c carried in a plate e fixed to the uprights F.
The screw nuts b are formed as worm wheels at their periphery and gear with
a worm f.
To the uprights F are fixed plates R having vertical grooves 1, 1, 2, 2, 3, 3,
communicating at bottom with a horizontal groove g, and the ends of the trun-
nions a of the beam are provided with blocks g' which are adapted to slide in one
or other of the grooves 1, 2 or 3, into which they may be brought by first shifting
them along the horizontal groove g by means of the screw and then raising them
in the required vertical groove by means of the worm f which actuates the nuts b
of the suspension screws D.
Thus assuming the trunnions a of the beam to be in the position shewn in full
lines at Figs. 1 and 2, then on turning the worm f they may be brought to the
position a, and on then turning the screw Ր they can be brought either into
the position a or into the position at on then again turning the worm f the
trunnions of the beam can be brought either to the position or into the
position 5, these several positions of a being indicated in dotted lines in Fig. 1.
It will be seen from the above description that in shifting the trunnions a of the
beam from the grooves 1, 1, of the uprights F to the grooves 2,2, or 3,3 (the
trunnions having previously been disconnected from the beam in any suitable
manner) the stroke of the bore rod P will be diminished, while if the trunnions a
be shifted from the grooves 3, 3. to the grooves 2, 2, or 1, 1, the stroke of the bore
rod P will be increased, so that by this means the action of the boring apparatus
can be adapted to suit strata of different hardness through which the boring has
to be made, without requiring to replace the crank shaft C by another for imparting
to the connecting rod a different length of stroke, which operation would cause
a considerable loss of time.

page_text: .
When diminishing the stroke of the bore rod, its speed can be increased.
The pivot h of the connecting rod B Figs. 1 and 4 is fixed in a bearing i fixed
on a plate H resting on the springs I which, as described in the said Specification
No. 30,024 of 1897 have for their object to deaden the shocks which the connecting
rod tends to impart to the beam on starting the upward motion of the bore rod.
On the plate Hrest counter springs I, and the tension of these springs I and I'
can be regulated by means of screw bolts and nuts K. The counter springs have
for their object to deaden the shocks which the beam A tends to transmit to the
rod B on the downward or percussive motion of the bore rod P. Their tension
can be regulated by means of the bolts K according to the weight of the bore rod,
that is to say according to depth at which the boring tool fixed to the bore rod is
acting.
The springs M, Figs. 1 and 3, on which rests the bore rod P, and which, as
described in Specification No. 30,024 of 1897, have the object of deadening the
shocks which the bore rod tends to impart to the beam A at the free fall of
the former, are also combined with counter springs M placed beneath the beam A,
and the tension of these springs M M can be regulated according to the weight of
the bore rod, by means of screw bolts and nuts N. The springs M prevent any
sudden upward jerks of the bore rod when it is being raised.
By thus deadening the several shocks to which the apparatus is liable, any
damage to the bore rod is prevented, and the speed of working can be increased.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is: -
1. In boring apparatus of the kind in which the bore rod is actuated by a rocking
beam so arranging the trunnions of the said beam that they can be shifted nearer
to or farther from the bore rod, whereby the stroke of the bore rod can be varied
to suit strata of different hardness without dismounting either the driving con-
necting rod or the crank shaft of the apparatus, substantially as described.
2. In boring apparatus such as is referred to in the first claim, suspending the
trunnions a of the beam A from two screws D) combined with a mechanism such
as ce which enables the trunnions to be shifted horizontally, the trunnions being
engaged with one or other of a series of vertical grooves 1, 2, 3 caried by the
uprights and connected together by a horizontal groove g, so that the trunnions
can be shifted from one pair of grooves to another pair for increasing or decreasing
the stroke of the hore rod, substantially as described with reference to the drawing.
3. In boring apparatus such as is herein referred to in which the boring tool is
rigidly fixed to the bore rod and in which springs I are interposed between the
beam and the connecting rod driving it, the combination with the said springs I
of counter springs I, the tension of the said springs being capable of adjustment
according to the weight of the bore rod, by means of screw bolts K, substantially
as described with reference to the drawing.
4. In boring apparatus such as is herein referred to in which the boring tool is
rigidly fixed to the bore rod, and in which springs M are interposed between the
bore rod and the beam the combination with the said springs M of counter
springs M, the tension of the said springs MM' being capable of regulation
according to the weight of the bore rod by means of screw bolts N substantially as
herein described with reference to the accompanying drawings.
5. Boring apparatus for deep borings combined and operating as herein described
with reference to the drawings.
1000