A New or Improved Machine for Squaring the Ends of and Centering Shafts and the like.
Year: 1889

page_text: Date of Application, 12th Sept., 1889
Complete Specification Left, 18th Apr., 1890-Accepted, 14th June, 1890
PROVISIONAL SPECIFICATION.
A New or Improved Machine for Squaring the Ends of and
Centering Shafts and the like.
I, GUSTAV WAGNER of Metzingen in the Kingdom of Württemberg, Empire of
Germany, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to provide a simple and effective machine for
shaping, and boring and countersinking the centre, of shafts, bolts and such like. To
do this work it is necessary, that the respective tools, moving at a proper speed,
should be alternately employed, which end is attained with most machines, hitherto
constructed for this purpose, by a time-wasting attaching and detaching of the
respective tools and changing of the belting or by employing a boring and counter-
sinking contrivance made of a piece, which however is elaborate in construction
and difficult of sharpening. Moreover such devices require much room in order
to be accessible for long and ponderous working pieces.
The said inconveniences are intended to be obviated by the improved machine,
the construction of which admits of a moderate weight thereof, and which may be
made stationary and transportable and worked by hand or motive power, as the case
may be.
The improved device is constructed as follows:
Two superposed horizontal spindles are moved at different speeds by means of a
wheel having inner teeth and serving simultaneously as pulley and crank holder,'
the speeds of said spindles being determined by the relative number and size of.
sprockets of the wheel referred to and of the toothed wheels geared with each other,
each of which is connected with one of the spindles and one of which gears into the
inner teeth of the main wheel.
The lower spindle carries the shaping and countersinking tool and the upper
spindle the boring tool. Both spindle bearings are lodged on and jointly revolvable
about the shaft carrying the main or driving wheel and are adapted to be alternately
adjusted to the centre of the working piece by means of a lever, adjusting pivot, or
other suitable means.
The respective spindle when adjusted, is pressed to the working piece by aid of a
two-armed lever having its fulcrum on one, and one of its extremities movably
attached to the other spindle. On removing the lever, the working spindle is
automatically returned to its inoperative position by a conveniently placed helical
spring.
The working piece is held by clamping cheeks fitting tooth-fashion into each other
and adapted to be approached uniformly to the centre by means of a spindle with
right- and left-handed thread.
To ensure parallel position of long work pieces with the working spindle and to
allow the machine to be speedily attached to long and heavy objects of operation, two
supporting cheeks are provided which are connected by means of the transverse pieces
of the clamping spindle to the clamping cheeks and capable of being moved simul-
taneously therewith and in the case of conic or otherwise shaped working pieces, taken
out through corresponding apertures.
The flat shaping tool is formed by a steel tube cut longitudinally into two pieces.
and sharpened in front, in connection with the countersinking device, consisting of a

page_text: spiral boring tool and being introduced and clamped fast in said tube so as to protrude
with its point therefrom. This arrangement renders the two halves of the shaping
tube and the countersinking tool relatively independent and capable of being
sharpened separately.
Dated this 12th day of September 1889
COMPLETE SPECIFICATION.
A New or Improved Machine for Squaring the Ends of and
Centering Shafts and the like.
I, GUSTAV WAGNER of Metzingen in the Kingdom of Württemberg, Empire of
Germany, 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:-'
This invention relates to the means for squaring the ends of and centering shafts,
bolts and such like and has for its purpose to provide a simple and effective machine,
the construction of which admits of a moderate weight thereof, and which may be
made stationary or transportable and worked either by hand or by steam power.
In machines serving for the above named purpose it is necessary that the squaring
and centering tools moving at proper speed, be alternately employed, which end has
hitherto generally been attained by the time-wasting process of interchanging said
tools and change of belting or by using a tool, elaborately made of one piece, for
simultaneously squaring and centering; this tool is however not only very expensive
but also exceedingly difficult to re-sharpen. Moreover the machines hitberto used
require much room in order to admit of the working of long and ponderous pieces.
The said inconveniences are intended to be obviated by the peculiar construction of
the improved device.
Reference being had to the accompanying drawing, in which like letters designate
like or analogous parts
Fig. 1 is a side elevation and partial section, and
Fig. 2 a top view and partial section of the improved device.
Figs. 3 to 7 represent details.
Two horizontal spindles a and
are revolved at different speeds by means of
wheel c, having inner teeth and being adapted to serve at pleasure either as a belt
drum or as a crank holder.
The spindle a carries the cutting and countersinking tool, and the second spindle b
the boring or centering tool. Both spindle-bearings are lodged on and revoluble
about shaft d, which also carries the main or driving wheel c, and are adapted to be
alternately adjusted to the centre of the working piece f by means of a lever æ or
other convenient adjusting device.
The respective spindle, when adjusted is pressed to the working piece by aid of
lever g, and, upon the latter being released, automatically resumes its inoperative
position owing to the action of a helical spring s.
The working piece f is held in position by clamping cheeks m m fitting tooth-
fashion into each other and adapted to be uniformly approached to the centre by
means of spindle p which is provided with right- and left-handed screw thread.
To ensure a parallel position of long work pieces with the working spindles a and b
and to allow the device to be speedily attached to long and heavy objects, two sup-
porting cheeks k k are provided which are connected by means of the transverse
pieces with the clamping cheeks m m and capable of being easily moved simul-
taneously therewith, and, in case of conic or otherwise shaped working pieces, taken
ent through corresponding apertures or slots U.

page_text: The flat squaring tool n consists of a steel tube cut longitudinally into two halves
and sharpened in front, in connection with the countersinking tool consisting of a
spiral drill o introduced and clamped fast in said tube, so as to protrude therefrom
with its point. This arrangement renders the two component parts of the tool
independent of each other and capable of being sharpened separately.
The new device squares the most uneven piece to any given depth and marks the
centre in an exact and neat manner. The clamping device holds pieces of round or
quadrangular cross section and different diameters without necessitating exchange of
clamping cheeks.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
A transportable machine for squaring the ends of and centering shafts and the
like, consisting of two tool-holders or spindles a and b revoluble at different speeds
by wheel c having inner teeth, said spindles being lodged in a block turning loose on
the shaft of main or driving wheel c and adapted to be alternately adjusted to the
axial direction of the working piece, clamping cheeks m m, exchangeable supporting
cheeks k k, and a squaring tool consisting of a tempered steel tube n divided into two
longitudinal portions and a spiral drill o enclosed between the latter, substantially as
and for the purpose set forth.
+1
1000
GUSTAV WAGNER.
Per Huelser & Co.,
142, Fleet Street, London, Attorneys.