An Improved Footstep Bearing for Spindles.
Year: 1890

page_text: Date of Application, 18th Mar., 1890
Complete Specification Left, 24th Mar., 1890-Accepted, 3rd May, 1890
PROVISIONAL SPECIFICATION.
An Improved Footstep Bearing for Spindles.
I, IGNAZ ETRICH of Oberaltstadt near Trautenau, Bohemia, Austrian Empire,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
Spinning machine spindles which work with a stepped journal or with a toe
running in a footstep bearing, have the disadvantage of becoming worn out at the
lower portion. The result of this is unsteady running which readily gives rise to
breakages of the thread or yarn. Further the sinking of the spindles due to the wear
causes "overspinning," or uneven filling of the bobbins.
The present invention has for its object to obviate these disadvantages, and the
nature of the same is illustrated in two modifications in Figs. 1 and 2 of the annexed
drawings.
As will be seen from the drawings the spindle a is recessed at the lower end at a'
and rests upon a pin or central pivot which is bolted to the lower spindle beam or
rail c.
Around this pin band the recessed lower portion of the spindle is arranged the oil
container which is closed with a cover and which when the spindles are very
close together, is formed by the lower spindle rail c itself (Fig. 2), whilst when
the spindles are comparatively far apart, the oil container is constituted by a separate
box or cup'd fixed to the spindle rail c by means of the pin (Fig. 1).
Both the pin b and the spindle a are made of steel and the parts that work upon one
another are strongly hardened, so that exceedingly hard and smooth rubbing surfaces
Further the rubbing
are formed, very much harder than those hitherto in use.
surfaces are continually bathed with pure oil, because the arrangement of the spindle
and the oil cup is such that the dirt resulting from the friction of the spindle and the
pin, sinks at once to the bottom, whilst any dust. that may penetrate into the lubri-
cating vessel will float on the top of the oil. Dirt can therefore never come into
contact with the rubbing surfaces.
'By the present arrangement of the footstep hearing, wear of the spindle is obviated
in every way as far as possible.
The spindle will therefore always run steadily, and thus the collar bearing or neck
bearing will be subject to less wear, so that breakages of the thread or yarn will be
obviated as 'far as possible. Also since the spindle cannot sink by reason of its
exceedingly slight wear, over spinning," that is to say, spinning of the thread on to
the bobbin flanges is completely obviated.
แ
It will be seen from the preceding that the improved arrangement of bearing
renders possible not only lighter but also steadier running of the spindle, which can
therefore be made of less length than bitherto, so that not only is a saving in driving
power effected but also at the same time greater speed and consequent increase in the
turn-out is obtained. It may also be stated that in the improved arrangement one
filling of the oil vessel is 'sufficient for many months, whilst the old oil is not lost but
can be collected and cleansed. There is thus also a considerable saving of oil.
In hardening thick spindles it has been found that a small percentage of them
become split at the junction of the hole or recess with the point.
To obviate this splitting a notch or groove e is formed a small distance above the
recess.

page_text: Spindles provided with the said notches or grooves may be subjected to the strongest
hardening without becoming split.
Dated this 18th day of March 1800
1. ETRICH,
Per L. W.
COMPLETE SPECIFICATION.
An Improved Footstep Bearing for Spindles.
1, IGNAZ ETRICH of Oberaltstadt near Trautenau, Bohemia, Austrian Empire,
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 :-
Spinning machine spindles which work with a stepped journal or with a toe running
in a footstep bearing, have the disadvantage of becoming worn out at the lower
portion. The result of this is unsteady running which readily gives rise to
breakages of the thread or yarn. Further the sinking of the spindles due to the
wear causes "over-spinning." or uneven filling of the hobbins.
The present invention has for its object to obviate these disadvantages, and the
nature of the same is illustrated in two modifications in Figs. 1 and 2 of the drawings
filed with my Provisional Specification.
As will be seen from the drawings the spindle a is recessed at the lower end at a¹
and rests upon a pin or central pivot b which is bolted to the lower spindle beam
or rail c.
Around this pin and the recessed lower portion of the spindle is arranged the
oil container d which is closed with a cover and which when the spindles are very
close together, is formed by the lower spindle rail c itself (Fig. 2), whilst when the
spindles are comparatively far apart, the oil container is constituted by a separate
box or cup d fixed to the spindle raiic by means of the pin b (Fig. 1).
Both the pin and the spindle a are made of steel and the parts that work upon
one another are strongly hardened, so that exceedingly hard and smooth rubbing
surfaces are formed, very much harder than hitherto in use. Further the rubbing
surfaces are continually bathed with pure oil, because the arrangement of the spindle
and the oil cup is such that the dirt resulting from the friction of the spindle and
the pin sinks at once to the bottom, whilst any dust that may penetrate into the
lubricating vessel will float on the top of the oil. Dirt can therefore never come
into contact with the rubbing surfaces.
By the present arrangement of the footstep bearing, wear of the spindle is obviated
in every way as far as possible.
The spindle will therefore always run steadily, and thus the collar bearing or
neck bearing will be subject to less wear, so that breakages of the thread or yarn
will be obviated as far as possible.
66 over-
Also since the spindle cannot sink by reason of its exceedingly slight wear,
spinning," that is to say, spinning of the thread on to the bobbin flanges is completely
obviated.
It will be seen from the preceding that the improved arrangement of bearing
renders possible not only lighter but also steadier running of the spindle, which can
therefore he made of less length than hitherto, so that not only is a saving in
driving power effected but also at the same time greater speed and consequent
increase in the turn-out is obtained. It may also be stated that in the improved
arrangement one filling of the oil vessel is sufficient for many months, whilst the

page_text: old oil is not lost but can be collected and cleansed. There is thus also a considerable
saving of oil.
In hardening thick spindles it has been found that a small percentage of them
become split at the junction of the hole or recess with the point.
To obviate this splitting a notch or groove e is formed a small distance above the
recess.
Spindles provided with the said notches or grooves may be subjected to the
strongest hardening without becoming split.
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 :-
A footstep bearing for spindles, in which the foot of the spindle is provided with
a recess such as a' working upon a pin or pivot such as band is surrounded by an
oil container such as d.
I. ETRICH,
Per L. W.