Improvements in Bearings for Shafts.
Year: 1891

page_text: Date of Application, 21st July, 1891
Complete Specification Left, 14th May, 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Bearings for Shafts.
I, JONAS PETTER VALLIN, of Skattmanso Bruk, Vittinge, Sweden, Gentleman,
do hereby declare the nature of this invention to be as follows:-
This invention relates to a spherical bearing for rotating shafts.
Fig. 1 of the accompanying drawing represents, as an example, such a bearing in
elevation and vertical section.
Fig. 2 is a plan of the same with the cover removed.
Fig. 3 is a vertical cross section of the bearing itself.
Fig. 4 shows separately the shaft with the sphere or spherical portion, hereinafter
referred to as the sphere, secured thereto.
b
On the shaft a is fastened a sphere 6 preferably of steel, adapted to enter the
brasses cc, which are internally formed with a spherical concavity and preferably
cast around the sphere between the hollow body and the concave cover. In the
lower brass c', which is provided with a flange d entering in a notch made in the
body of the bearing, is arranged a lubricating groove e (or grooves), which, by two
passages f,fmade on each side of the brasses in the body of the bearing, is in com-
munication with an oil reservoir g in the lower part of the body of the bearing and
covered by a cover.
During the rotation of the spherical portion 6 with the shaft a the oil is taken
from the lubricating groove e and forced to spread over the surface of the brasses.
In order to prevent the oil or lubricant, which cannot find its place between the
sphere and the brasses, from flowing out along the shaft, there are two grooves h, h
cut into the sphere, and the oil which accumulates in these grooves is, by the centri-
fugal force, driven out against the edge i of the grooves and thrown against the
walls of the box along which it flows down to the groove e. By this arrangement
the oil is kept circulating, whereby an effective lubrication is secured. In order to
prevent the oil from being thrown out through the joint between the brasses a piece
of lead ; or other tightening material is inserted between the brasses.
i
The brim of the oil reservoir g is disposed on a level with the highest part of the
lubricating groove e, see Fig. 3, whereby all wasting of oil is prevented.
In order to prevent the entrance of dust and impurities, in the bearing, rings / of
leather or other flexible material fitting closely to the shaft are secured on opposite
sides of the bearing by means of screws and rings k of iron or other metal. To
enable an easy removal of the rings / they are, as well as the rings k, made in two
halves.
Among the advantages of a bearing arranged according to this invention may be
mentioned the following riz., all strains in the bearing are prevented, the lubrication
is very complete and is effected without the use of a wick, oil is saved and the
bearing may be kept clean and there will be practically no oil spilt. The sphere
may, when it has become worn, easily be replaced by a new one, and thus the shaft
s saved from wear.
Dated
1
8
1001
J. P. VALLIN,
By L. W., per F. B.

page_text: COMPLETE SPECIFICATION.
Improvements in Bearings for Shafts.
I, JONAS PETTER VALLIN, of Skattmanso Bruk, Vittinge, Sweden, Gentleman,
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 bearings for rotating shafts and according thereto I
employ a spherical part disposed around and firmly connected to the shaft and
running in correspondingly shaped brassses.
Fig. 1 of the drawing filed with my Provisional Specification represents, as an
example, such a bearing in elevation and vertical section.
Fig. 2 is a plan of the same with the cover removed.
Fig. 3 is a vertical cross section of the bearing itself.
1
Fig. 4 shows separately the shaft with the spherical portion secured thereto.
On the shaft a is fastened a spherical part 6 preferably of steel, adapted to enter
the brasses c, c which are internally formed with a spherical concavity and by
preference are cast around the spherical part 6 between it and the body or underpart 1
and the cover of the bearing. In the lower brass c¹, which is provided with a
flange entering in a notch made in the body of the bearing, is arranged a
lubricating groove e (or grooves) which, by two passages f, f, on each side of the
brasses in the body of the bearing, is in communication with an oil reservoir g
arranged in the lower part of the body of the bearing and provided with a 2
cover.
During the rotation of the spherical portion b with the shaft a oil is taken from
the lubricating groove e and in consequence of the centrifugal action the oil will
collect around that part of 6 which is of the largest diameter, but not finding any
.exit it will be caused to spread over the surface of the brasses. In order to prevent 2
oil or lubricant flowing out from between the spherical part b and the brasses along
the shaft, two grooves h, h, are cut into the part b, and the oil which accumulates in
these grooves is, by the centrifugal force, driven out against the edge of the
grooves and thrown against the walls of the box along which it flows down to the
groove e. By this arrangement the oil is kept circulating, whereby effective
lubrication is secured. In order to prevent the oil from being thrown out through
the joint between the brasses a piece of lead ; or other suitable material is inserted
between the brasses.
The brim of the oil reservoir g is disposed on a level with the highest part of the
lubricating groove e, see Fig. 3, whereby all waste of oil is prevented.
In order to prevent the entrance of dust and impurities in the bearing, rings 1 of
leather or other flexible material fitting closely to the shaft are secured on opposite
sides of the bearing by means of screws and rings k of iron or other metal. To
permit of the easy removal of the rings they are made in two halves as are also
the rings k.
Among the advantages of a bearing arranged according to this invention may be
mentioned the following, namely, strains in the bearing are prevented, the lubri-
cation is very complete and is effected without the use of a wick, oil is saved, the
bearing can be kept clean and there will be practically no oil spilt. The spherical
part may, when it has become worn, easily be replaced by a new one, and thus the
shaft is saved..
b
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A bearing for a rotating shaft comprising a spherical nart such as ŉ con- !

page_text: 5
brasses of an internal spherical form corresponding to the shape of the spherical
part on the shaft, said spherical part 6 being provided with grooves h h in order to
prevent lubricant flowing out along the shaft.
2. The bearing substantially as described and shown.
Dated thin 14th 1- Ma- 1900
J. P. VALLIN,
By L. W., per F. B.