Improvements in Bearings chiefly Designed for the Spindles of Spinning Machines and the like.
Year: 1899

page_text: Date of Application, 18th May, 1899-Accepted, 24th June, 1899
Improvements in Bearings chiefly Designed for the Spindles of
Spinning Machines and the like.
I, WILHELM BÄUERLE, of 15, Schülestrasse, Augsberg, Bavaria, in the Empire
of Germany, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to improvements in ball bearings for spindles especially
those of roving frames and spinning jennys, twisting frames, bobbin-frames and
so forth, and it has for its object to reduce friction in the bearings and so effect
a great economy in the driving power.
As hitherto constructed the ball bearings of these spindles give rise to more
or less friction through slipping taking place between the balls and their races
owing partly to the balls being subjected simultaneously to pressures in two or
more directions, and partly to the form of ball races with which the balls are in
contact for the greater portion of their circumferential surface.
By this invention the spindle bearings are so devised as to cause the balls, both
in the upper bearing and in the socket bearing, to be submitted to pressure in one
The curva-
direction only and also to be prevented from slipping in their races.
66
gus-
ture of the ball races is of such a form as to cause the balls to be kept
pended" between the race and spindle. The curvature of the race in each bearing
as well as the diameter of the bearing and its spindle are so calculated as to
reduce the contact between the balls and race to a minimum, and to cause such
minimum contact to be maintained during the revolutions of the spindle thereby
ensuring a purely rolling friction taking place between the balls and their races.
The characteristic feature of the improved arrangement consists in that the
pressure is directed normal upon the balls, that is to say the line supposed drawn
through the ball at the two points of contact, passes through the centre of the ball:
this being the case both as regards the bearings in which the balls are subjected
to radial pressure, as well as regards the balls in the socket-bearing.
My invention will be readily understood by reference to the accompanying
drawings, in which
Figure 1 is a sectional view showing an arrangement of spindle, provided with
ball-bearings, suitable for ring spinning spindles, ring twisting machines, bobbin
and cop winding frames and the like."
Figure is a similar view to Figure 1, showing a spindle suitable for self-
acting mule. bobbin and cop winding frames and the like.
Figure 3 shows a horizontal section on line a 6 of Figure 1 or 2 of the lower
or socket bearing.
Figure 4 shows a horizontal section on line c d of Figures 1 or 2 of the same
bearing.
Figure 5 shows a horizontal section on line ef of Figures 1 or 2 of the upper
bearing.
Figure 6 shows the socket bearing to an enlarged scale.

page_text: Figure 7 shows a section on line E F of Figure 6 but with the spindle
removed,
Figure 8 shows a section on line G H with the spindle in position.
Figure 9 shows on an enlarged scale a socket bearing provided with two
independent rows of balls to receive the radial thrust and the vertical thrust.
As may be seen from Figure 6 the bearing surrounding the spindle is formed
at the portion A D with a radius CD equal to that of the ball while the por-
tion A B forms a curve the radius B C of which is greater than the radius of
the ball. The bottom bearing surface is formed with a
radius the diameter A. C of the ball and the lower end of the spindle is also formed
curve having for its
with a race the curvature of which has a greater radius C D than the ball.
This peculiar form of race allows the balls to rest on the seat when the spindle
is removed but causes them to be kept suspended so to speak between the spindle
and bearing provided the respective diameters of such bearing, ball and the
spindle are to the exact size required.
In the improved spindle bearing the balls are subjected only either to the
vertical or to the radial pressure of the spindle. At the same time the peculiar
shape of the races enables the contact of the balls with the races to be reduced
to a minimum and their tendency of rising in the bearing to be prevented, thus
providing a purely rolling friction without slipping.
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
1. Spindle ball bearing characterized by the balls being in contact at one point
only with the race or bearing surface and with the spindle i.e. with both sides
of the race for the purpose of obtaining a purely rolling friction free of any
slipping and also of subjecting the balls to pressure in one direction only.
2. A spindle ball bearing of the kind claimed in Claim 1 in which the ball
race portion A B Figure 6 is curved to a greater radius than that of the balls,
while the ball seat A D is curved to the same radius as that of the ball.
3. Spindle ball bearing of the kind claimed in Claim 1 in which the balls are
retained in a race having a curvature of greater radius than that of the balls
and in such a manner that the connecting line of the two contact points in each
ball passes through the centre of the ball and is located in the direction of the
pressure, while by exactly gauging the diameters of the bearing, spindle and
balls the latter are held suspended and thus friction through the slipping of
the balls in the hearings is obviated.
4. Spindle ball bearing as claimed in Claims 1 to 3 in which the balls are
arranged in several independent rows.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.