Improvement in Bearings for Shafts and Spindles.
Year: 1894

page_text: Date of Application, 27th Jan., 1894
Complete Specification Left, 27th Nov., 1894-Accepted, 5th Jan., 1895
PROVISIONAL SPECIFICATION.
.
Improvement in Bearings for Shafts and Spindles.
1, WILHELM VON PITTLER, of 144 High Holborn, in the County of London,
Manufacturer of Automatic Machine Tools, do hereby declare the nature of this
invention to be as follows:-
This invention relates to shafts or axle bearings in which the boxes or bushings
are adjustable from time to time, in accordance with the progress of wear which
such adjustment is designed to compensate.
The principle of the invention will be best understood by reference to the
accompanying drawings in which
Fig. 1 is an elevation of a spindle bearing constructed in accordance with this
invention and intended more especially for machine tools.
Fig. 2 is a cross section thereof along line a-b.
Fig. 3 a longitudinal section along line c―d.
Fig. 4 a cross section along line e-f, and
Fig. 5 a longitudinal section along line g―h.
The bearing mainly consists of slotted boxes or bushes a a', which are adjusted
by means of set screws 6 6', in such a manner that the shaft or spindle c which is to
be supported therein, can turn freely and without back lash or clearance space.
To compensate for wear, the adjusting screws bb' are loosened somewhat, whereby
the resiliency or rebounding force of the boxes a a' is brought into operation, until
the shaft or spindle c again acquires the desired firmness and uniformity of motion.
Or the bearings d d¹, which are also slotted, and contain the boxes a a¹ may, after
the adjustment of the said boxes a a¹ be tightened or compressed by means of
screws e e¹ so as to fit the adjustment of the set screws b b¹.
In Figs. 4 and 5 a conical screw 611 is shown as a substitute for the adjusting
screws 6 6¹; as an equivalent means for adjusting the boxes or bushings a a¹ with a
view to compensating wear.
Dated this 12th day of January 1894.
I, WILHELM VON PITTLER, of 144 High Holborn, in the County of London,
Manufacturer of Automatic Machine Tools, 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 shafts or axle bearings in which the boxes or bushings
are adjustable from time to time, in accordance with the progress of wear which
such adjustment is designed to compensate.
The principle of the invention will be best understood by reference to the
drawings filed with the Provisional, in which:
Fig. 1 is an elevation of a spindle-bearing constructed in accordance with this
invention and intended more especially for machine tools,

page_text: Fig. 2 is a cross section thereof along line A-B of Fig. 1,
Fig. 3 a longitudinal section corresponding to Fig. 2,
Fig. 4 is a cross section along line C-D of Fig. 1, after the screw 611 has been
substituted for the screws b¹.
Fig. 5 shows the same modification in longitudinal section.
The bearing mainly consists of slotted bushes a a' which are adjustable by means
of set screws bb', in such a manner, that the shaft or spindle c which is to be
supported therein, can turn freely and without back lash or clearance space. To
compensate for wear, the adjusting screws bb' are loosened somewhat, whereby the
resiliency of the bushes a a¹ is brought into operation, until the shaft or spindle c
again acquires the desired firmness and uniformity of motion. The outer
bearings dd, which are also slotted, and contain the bushes a a¹ may, after
the adjustment of the said bushes a a¹, be tightened or compressed by means of
screws e e¹, so as to fit the adjustment of the set screws b b'.
In Figs. 4 and 5 a conical screw 611 is shown as a substitute for the adjusting
screws bb, or an equivalent means for adjusting the bushes a a' with a view to
compensating wear.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is ;-
1. In axle bearings, the combination of a split bushing and adjusting screws, with
an adjustable outer bearing, substantially as described.
2. The combination and arrangement of parts constituting the adjustable axle
bearing, substantially as described and shown.
Dated this 24th day of November 1894.
FAIRFAX & WETTER,
433, Strand, London, Agents.