Improvements in Machinery for Boring Rock and the like.
Year: 1889

page_text: Date of Application, 21st Nov., 1889-Accepted, 11th Jan., 1890
COMPLETE SPECIFICATION.
Improvements in Machinery for Boring Rock and the like.
I, FRANZ ULRICH of Leopoldshall-Stassfurt German Empire, Manufacturer do
hereby declare 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:-
My invention relates to rock boring machines and has for its object to provide a
machine which can be made to penetrate into the rock more or less rapidly accordingly
as the rock happens to resist more or less the action of the boring tool proper.
The manner in which I prefer to carry my invention into effect is shewn in the
accompanying drawings of which
Fig. 1 is a longitudinal section and
"
2: a cross section of the mechanisms and arrangements invented by me.
The contrivance consists firstly of a threaded boring spindle B to the end of which
the boring tool proper would be attached, the spindle being revolved by means of a
handle or other mechanism, and provided with a longitudinal notch D and with it is
connected a tooth wheel C which is movable and fixed by means of a spring wedge or
the like. With the spindle are also connected and fixed loose the double wheels g¹
and on the nave elongation of the said double wheel g, g' is fixed the nut-casing 01,
which holds the nut m which can be raised or lifted by means of screw m³, so that it
either grips into or stands free of the thread in the spindle.
The wheels C and g, g', are all covered by the outer casing a in which are also
fixed the two shafts i, each carrying two wheels 1, and f, f¹. Of these two pair
of wheels one of each (and f¹) are firmly fixed on their respective shafts while the
two other wheels (1 and f) are loose on the shafts but may be fixed firmly whenever
required by means of pins K and K'.
When the spindle is turned once round with the nut m in the same position as
shewn in the drawings, then the boring tool will be pressed forward a distance equal
to the pitch of thread and the moving wheel C only puts the two loose running
wheels and with which it is geared, in motion. As soon, however as the wheels
or fare firmly fixed on the shafts or respectively, which is done by means of
coupling pin K or K' respectively then the geared wheel transmission for gl
respectively cause the nut casing with enclosed nut m, to revolve and to advance
with the spindle, thereby altering the forward motion of the spindle or boring tool
respectively.
By raising the nut m clear of the spindle thread, I am enabled to more quickly pull
back the spindle.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
An Improved machine for boring rock and the like consisting essentially of a
threaded boring spindle B in the threads of which a nut m is geared and a tooth-
wheel C turning with the spindle and geared with wheels 1, 1, g' or f, f¹g respectively
for the purpose of causing the nut m to move either forward or backwards in order to
regulate the push of the boring tool substantially in the manner as described and
shewn in the drawings.
London November th 1889
FRANZ ULRICH:
Per C. R. Bonne & Co.,
41. Eastcheap, E.C., Patent Agents.