Year: 1889

page_text: I, AUGUST KNÜPFER, of Dorndorf by Jena, in the Kingdom of Prussia, German
Empire, Engineer, 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 :-
It has hitherto been the general practice to detach the shaft entirely from drilling
machines, when actually drilling, only using the shafts or shaft while driving the
machine on the roads etc.
Drilling without shafts has however, its great drawbacks, amongst them that the
machine may come into contact with the horses, thereby sometimes frightening them,
and causing other inconvenience. Having to attach and detach the shaft is also
troublesome and wasteful of time.
My improvements purpose to enable drilling machines to be worked with the shaft,
which according to my invention is connected with the machine in such a manner
that ordinarily its movements have no effect on the machine, yet, when driving the
machine in the roads the shift can be readily fastened so as to guide the machine.
The manner in which I attain these objects is illustrated in the drawings herewith
and fully explained as follows:-
The fore body is connected with the back part (the drilling machine proper) in the
usual way, partly by means of the rod v partly by means of the draught bar v¹, both
of which turn on the vertical axle c. The shaft attached to this axle by means of a
joint, turning on the horizontal bolt w, which passes through the axle c. The shaft
may also be connected with the axis in another manner namely as shewn in drawings
Figs. 10 to 14. where the axis is surrounded by a shell c. The connection of the
parts that turn directly round the axis takes place by means of the hinges formed by
arms a² and notches, locked by bolts W, which do not in this case pass through the
axis c, which consequently does not take part in the movements, shell c¹ moving
independently.
•
In consequence of the said arrangement the movements of the machine and of the
shaft are independent of each other.

page_text: The shaft may be connected with the axle c, either at the upper end of the latter,
Figs. 1-4 or below the support of the framework Figs. 6-9 in which latter case
the draught bars are fixed on the shaft n direct, while in the former case it is preferable
to fix them in the mechanism f which turns on the axle c.
In order to be able to secure the shaft in such a manner with the machine that it
can guide it in the ordinary way, which may be desirable, for instance, when driving
on a road, when turning and so on, the shaft is connected with a semi-circular hoop e,
which is fixed either as shewn in Figs. 6 to 9 or as shewn in Figs. 1 to 5.
In the latter case the plate p catches round the arch, and when it is desired to
fasten the shaft to the arch this may be done by means of a bolt, a chain or the
like, or the mechanism shewn in Figs. 1 2 & 3 may be used.
This contrivance consists in an adjustable bolt o, fastened to the plate p, and
moveable forward by means of a spring t. In the inner circumference of the arch is
an indent 0,
in consequence of which the shaft is coupled to the arch as soon as the
bolt slips into the indent. The bolt can be again withdrawn, thus uncoupling the
shaft from the hoop, by means of the handles (u u) of a segment, acting upon a pin
connected with the bolt.
The segment is prevented from moving back by the pin clicking into a siding
Fig. 2 where the tension of the spring holds it, a sharp pull being required to remove it.
The improvements are equally applicable whether the machines are guided in front,
or behind, in the former case a chain wheel R, worked by a handle B is employed, as
shewn in Fig. 9 the turning taking place on axle c.
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
In drilling machines:
1. The method of attaching the shaft to the machine by means of a swivel joint
formed either by the horizontal bolt and the upright axis c or by a shell c', and
spindles w and hinges.
2. The method of making the shaft fast in such a manner that it can guide the
machine whenever required by means of a hoop piece e fixed concentrically to the
axis c. Both substantially in the manner and for the purposes described and as
shewn in the accompanying drawings.
1911 W 1000