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Патент USA US2110320

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March 8, 19318.
0, BOCHMANN
2,110,320
DOUBLE TWIST TWISTING SPINDLE
Filed May 1, 1936
' 11117011101’:
‘ W
M
2,110,320
Patented Mar. 8, 1938'
PATENT OFFICE
UNITED STATES
2,110,320
DOUBLE TWIST TWISTING SPINDLE
Otto Bochmann, Bemschcid-Lennep,
Germany
Application May v1,
1936, Serial No. 71,401
'
h
In Germany May 10, 1935
2 Claims.
(Cl. 117-95)
disposal so that the pressing on pressure exists
This invention relates to inclined double-twist
twisting spindles driven by an endless driving
element. Spindles of this type are usually ar
ranged on a common spindle rail, so that the
5 -spindles have to be accurately adjusted singly
permanently.
/ An embodiment of the invention is illustrated
by way of example in the accompanying drawing
in which:5
Fig. 1 is a side elevation of the improved
in order to obtain an almost uniform pressing
of the spindles against the driving element.
This arrangement suffers of the inconvenience
that, gesides the complicated arrangement, a
spindle.
10 uniform pressure cannot be ensured at all points
‘ as the pulled side is always slack relative to the
pulling side.
It has become known for simple vertically ar
ranged twisting spindles to arrange them inde
15 pendently on each other in individual bearing
arms so .that in this instance a uniform press
Fig. 2 is a section on line 2-2 of Fig. 1.
Fig. 3 shows diagrammatically the 'total ar
rangement of such a drive.
The double twist twisting spindles
10
l
are
mounted each one in a bearing arm 2, these arms
being loosely suspended on a common support 3
so that the spindles bear with the wharves by
gravity against the driving element 4.‘ Holding 15
devices 5, designed to hold the spindles in the
disengaged position, are arranged one opposite
ing of the spindles against the driving element , each spindle, a stopping element 6 of each hold
is ensured. This construction has, however, the ing device engaging in a corresponding recess of
defect, that owing to the preserving of the com
20 mon spindle rail and to the addition of separate
bearing pins for every single spindle the machine
becomes complicated and expensive. Every spin
dle must have an element which presses the
spindle against the driving element. This press
25 ing element consists usually of a spring or of
a weight. The machine is not only more com
plicated by the arrangement of these pressing
elements but is less easy to survey and inclined
to disturbances of service as the auxiliary ele
30
ments producing the pressure are liable to fail.
These inconveniences are obviated by the in
vention which consists in that the inclined
double-twist twisting spindles driven by an end
less driving element and oscillatably mounted
independently of one another in individual bear
35 ing arms are suspended on a common support so
that the wharves bear by gravity of the spindles
against the driving element. Brake surfaces are
preferably provided against which the individual
40 spindles are pressed for stopping their rotation,
and holding devices are also provided for main
taining the spindles in disengaged position and
the spindle. Opposite each spindle a brake sur- ' 20
face ‘I is arranged designed to stop the corre-,
sponding spindle if the same is pulled against it,
but to liberate the spindle in disengaged position
for further attendance if the spindle is released.
Fig. 3 shows that in an endless belt drive, in
which the pulled side is slack or loose relative
to the pulling side, every individual spindle can
adapt itself to these differences so that, without
‘any auxiliary means, a general uniform pressing
on pressure of. the spindles is ensured.
I claim:-—
30
1. Inclined double-twist twisting spindles
driven by an endless driving element, comprising
in combination with the driving element and the
spindles, a wharve on each spindle, a conmion 35
support extending in parallel to the driving ele
ment, an angular gravity-controlled arm com
prising a vertical and a substantially horizontal
portion, and mounted to oscillate about the sup
port, and a bearing for the corresponding spindle 40
in the substantially horizontal portion.
2. Inclined
double - twist. twisting
spindles
driven by an_endless driving element, comprising
out or contact with the brake surfaces so that . in combination with the driving element and
the spindles can be rotated freely by hand.
the spindles, a 'wharve on each spindle, gravity- 45 '
This construction presents the advantage that, controlled oscillatably mounted spindle-bearing
as in the twisting spindles of known type, a
uniform pressing-on pressure is obtained, the
manufacturing being simplified and the cost of
manufacture reduced. The spindles are sus
pended on a common support so loosely that they
produce by gravity the pressing-on pressure.
All auxiliary elements and a special bearing of
the spindles are avoided and the machine is of
simpler construction and more reliable in serv
55 ice owing to the simple arrangement of the spin
dles as the gravity of the spindles is always at
means for holding the individual wharves against
the driving element, a brake surface arranged
in. the path of oscillation of each spindle, said
spindle adapted to be swung to bring its wharve 50
into contact with said brake surface to bring said
spindle to a standstill, and a holding device
adapted to maintain said spindle in disengaged
position ‘freely rotatable by hand and out of con
tact with said brake surface.
OTTO BOCHMANN,
55
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