Improvements in Bearings for Shafts and Rotating Bodies.
Year: 1895

page_text: Date of Application, 26th Sept., 1895-Accepted, 25th Jan., 1396
COMPLETE SPECIFICATION.
Improvements in Bearings for Shafts and Rotating Bodies.
We, BRUNO WESSELMANN Engineer and GUSTAV BÖCKER Dr. Jur. of
Göttingen in the Kingdom of Prussia, Germany, 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:-
The present invention relates to a contrivance for reduction of the friction in
rotatory bodies as for pulleys of pieces of furniture and shafts. Its characteristic
feature is that the body rests or moves upon one or more ball bearings enclosed in
caps which in their turn rest upon balls having a smaller diameter. A plate serves
as support for the latter.
The accompanying drawing shows in detail an example of the working.
Fig. 1 shows a longitudinal plan; Fig. 2 is a section view of x-x of Fig. 1 ;
while Fig. 3 shows a detail.
The truss and box-cushion represented in Fig. 1 are cut along y-y of Fig. 2.
The shaft a is surrounded by 5 bearings b, enclosed in a cap c in such a way that
the greater part of the ball bearing lies within the cap. The two caps are made
fast to one another.
Each of the bearings b is in contact inside the cap with the ball bearings d,
which have a smaller diameter than band a hollowed out plate e as abutment or
under-support.
In order to effect an automatic giving or to prevent slackening of pressure of
the bearing b, as soon as it has become worn in consequence of friction, the plate e
is placed within a box i upon a spring k, thus allowing of an up and down
motion.
At the end of the shaft a pear-shaped body is attached, the outer surface of
which is formed by part of a ball and in contact likewise with bearings d of
smaller diameter. The smaller bearings are arranged upon a hollowed out plate e
resting upon a fixed bearing h.
The oiling of the bearings 6 surrounding the shaft can be suitably effected by
means of the grooves p of the upper bearing in consequence of which the whole of
the moving bodies are automatically oiled.
Having now particularly described and ascertained our said invention and in
what manner the same is to be performed, we declare, that what we claim, is :
1. A contrivance for reducing the friction in rotating bodies, characterised by
the fact that the body rests upon the bearing b enclosed in a cap, resting in its
turn upon the bearings d having a smaller diameter, the hollowed out plate e
serving as under support for d.
2. In the invention claimed under 1 a method of construction the characteristic
feature of which is that the plate e acts elastically for the purpose of attaining an
automatic giving or preventing any slackening of the pressure on the bearing 6 after
the latter bas become worn in consequence of friction.
3. In the invention claimed under 1 a method of construction for effecting a
reduction of the friction upon bodies rotating, and the characteristic feature of
which is that a stretched body is employed in place of the bearing 6 and wedged
into the rotating body (axle, shaft and so on), while the foot of the stretched body

page_text: rests upon bearings of smaller diameter, the latter having, by means of the plate e
-an elastic or fixed.support.
Dated this 24th day of September 1895.
ROBERT KRAYN,
Agent for Applicants.