Improvements in Apparatus for Deep Boring.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Deep Boring.
I, JOSEPH VOGT, of Niederbruck, near Masmunster, Alsace, Germany, Manu-
facturer, do hereby declare the nature of this invention to be as follows:
In the ordinary "free-falling" apparatus for deep boring (systems of Kind,
Taucke etc.) the tool falls independently of the boring rod thus entailing a loss
of time and of effective length of stroke, as well as diminishing the number of
strokes per minute.
By this invention the boring tool can be firmly united with the boring rod
and between this latter and the rocking beam, as well as, if necessary, between
the beam and its driving gear elastic devices are introduced; in this way the
boring rod can move in advance of the driving machine and a good working
stroke is attained.
For this purpose a rocking beam is actuated at one end by a driving rod con-
nected with the crank of an engine while through the other end the boring rod
passes freely.
Between the cross head of the boring rod and the beam, and also between the
cross head of the driving rod and the beam, elastic buffers are disposed. The
free boring rod is not effective if it does not move with the necessary speed,
for it then only touches the bottom of the boring without doing any effective
work.
At a more rapid speed, however, the vis inertia of the boring rod strains the
elastic buffers and produces a powerful stroke on the bottom of the boring.
When the rod has touched the bottom it is at once thrown upwards by the
reaction of the elastic buffers, whereby breakage of the rod or its connections is
avoided; moreover the tool only strikes the bottom and is then immediately
raised so that it does not get jambed in clefts. The compression and reaction
of the elastic buffers also facilitate the working of the motor by lengthening
the effective stroke of the driving rod, and a comparatively short stroke of the
motor will achieve a high speed.
In a modification the boring rod is alone supported by elastic buffers while the
driving rod is made in two parts connected by an elastic device. There may also
be provided extension springs between the cross heads of the driving and boring
rods and the beam to prevent a too sudden rebound.
The elastic device connecting the boring rod and driving rod with the beam
preferably consists of a plate to which the driving rod or boring rod is connected,
which is supported on the beam by volute buffer springs, and which is pressed
down on these springs by means of bolts tying it down to the beam, these bolts
having spring action which is regulated by screwing up the nuts of the bolts.
Dated this 18th day of December 1897.

page_text: Improvements in Apparatus for Deep Boring.
I, JOSEPH VOGT, of Niederbruck, near Masmunster, Alsace, Germany, Manu-
facturer, do hereby 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:
"
A
In the ordinary "free-falling apparatus for deep boring (systems of Kind,
Taucke etc.) the tool falls independently of the boring rod thus entailing a loss
of time and of effective length of stroke, as well as diminishing the number of
strokes per minute.
'
By this invention the boring tool can be firmly united with the boring rod
and between this latter and the rocking beam, as well as, if necessary, between
the beam and its driving gear elastic devices are introduced; in this way the
boring rod can move in advance of the driving machine and a good working
stroke is attained.
In the accompanying drawings Fig. 1 shows a boring apparatus provided
with elastic buffers between the rocking beam and the cross head of the boring
rod as well as between the cross head of the driving rod and the beam.
Fig. 2 shews a modification in which the driving rod is made in two parts con-
nected by a spring, the boring rod alone being supported by elastic buffers.
Fig. 3 is a longitudinal section, to an enlarged scale of the beam at the end
which supports the boring rod.
As shewn in Fig. 1 the beam a has its centre of oscillation at b. At one end
of the beam the boring rod c is freely suspended, while at the other end the
driving rod d and counter weights Q are attached.
The buffers e e¹ are arranged between the beam and the cross heads of the
boring rod and the driving rod respectively, to take up the concussion of the rods
against the beam.
The free boring rod is not effective if it does not move with the necessary speed,
for it then only touches the bottom of the boring without doing any effective work.
At a more rapid speed, however, the vis inertia of the boring rod strains the
elastic buffers and produces a powerful stroke on the bottom of the boring.
When the rod has touched the bottom it is at once thrown upwards by the
reaction of the elastic buffers, whereby breakage of the rod or its connections is
avoided; moreover the tool'f only strikes the bottom and is then immediately
raised so that it does not get jambed in clefts. The compression and reaction
of the elastic buffers also facilitate the working of the motor by lengthening
the effective stroke of the driving rod, and a comparatively short stroke of the
motor will achieve a high speed...
The same effect is obtained in the modification shewn in Fig. 2, wherein the
driving rod is made in two parts g which are..connected together by the spring h.
The spring bolts i shown in Fig. 3 can be varied in tension by screwing their
nuts; they serve to prevent- the plate o to which the boring rod is attached from
being suddenly thrown, upwards. The modified driving rod shewn in Fig. 2
may be provided with nuts and bolts k whereby the distance between the two
parts of the rod may be adjusted.
'
.i
The elastic buffers. referred to herein may in all cases be constructed of any
kind of elastic material, such as metal springs, india rubber, or air, oil, glycerine
and the like suitably adapted.
C

page_text: Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
.
1. In apparatus for deep boring of the kind having a free-falling boring rod
permanently connected to the boring tool, an elastic buffer or elastic buffers
placed between the boring rod and the oscillating beam which actuates it, so
that the said boring rod rests freely on the elastic buffer or buffers, substantially
as described.
2. In apparatus for deep-boring of the kind referred to in Claim 1 an elastic
buffer or elastic buffers placed between the oscillating beam and the driving rod
connecting the crank of the motor to the said beam, substantially as described.
3. In apparatus for deep-boring, of the kind referred to in Claims 1 and 2
the method of attaching the boring rod and the driving rod to the oscillating
beam which consists in connecting each rod to a plate resting on an elastic buffer
or elastic buffers placed on the beam, the said plate being connected to the beam
by adjustable spring bolts, substantially as described.
A
1000
ABEL & IMRAY,
Agents for the Applicant.