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Патент USA US3045753

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July 24 , 1962
c. R. s RAUBING
3,045,741
APPARATUS FOR SPINNING META TUBING TO PREVENT OXIDIZATION
OF‘ PARTS SUBJECTED TO HEAT OF FRICTION
Filed Dec. 24, 1959
2 Sheets-Sheet l
INVENTOR
Charles R?traubézlg
’
BY
ATTORNE
July 24, 1962
c. R. STRAUBING
3,045,741
APPARATUS FOR SPINNING METAL TUBING TO PREVENT OXIDIZATION
OF‘ PARTS SUBJECTED T0 HEAT OF FRICTION
Filed Dec. 24, 1959
2. Sheets-Sheet 2
58 45
55
5
59
INVENTOR
C72 arles RSiraubl'gg
ATTORNEY
atent @f?ce
Ii?d??il
Patented July 24, 1952
1
2
3,045,741
a?ixed a vertical standard 16. The standard 16 carries
at its upper end portion a stationary jaw 17.
‘
APPARATUS FOR SPINNING METAL TUBING
TO PREVENT OXIDIZATION 0F PARTS SUB
JECTEI) T0 I-EAT 0F FRICTION
Charles R. Straubing, Sodus Point, N.Y., assignor to Ken
more Machine Products, Inc, Lyons, N.Y
Filed Dec. 24, 1959, Ser. No. 861,798
Either the motor 11 or the standard 16, and thereby
the shaping die 14 or the stationary jaw 17, respectively,
are movably mounted on the platform 15 for relative
movement, by conventional or known guides and force
applying mechanisms (not shown), such as those dis
1 Claim. ((11. 153-81)
closed in US. ‘Patent No. 2,419,864 granted to Axel
Westin on April 29, 1947.
The present invention relates to an apparatus for spin 10
The shaft 12 is centrally providedrwith a longitudinally
ning metal tubing to prevent oxidization of parts subjected
extending passageway '18 which communicates at its inner
to heat of friction and it consists in the combinations,
end with a like passageway 19 formed in an inner portion
constructions ‘and arrangements of parts herein described
23 of the spinner 14.
\
and claimed.
Adjacent the machine 10 there is provided a tank 21
Generally there is provided a method of spinning metal
containing an inert gas such as nitrogen under pressure.
tubing in such manner that free oxygen in the air is pre
A tube 22 extends from the tank 21 to the outer end of
vented from coming into contact with those parts of such
the shaft 12 and communicates with the passageway 18
tubing :as are being subjected to great frictional heat.
therein, any form of leakproof joint (not shown) being
The method thus prevents oxidization of such parts. This
provided for connecting the tube 22 and the shaft 12, it
is accomplished ‘by providing a constantly replenished
being understood that the tube 22 remains stationary
atmosphere of an inert gas such as dry nitrogen in the
while the shaft 12 is adapted to revolve at a high rate of
space adjacent to the par-ts so being subjected to friction.
speed. A control valve 23 is provided in the tube 22.
Nitrogen or other inert gas will not combine with the
In carrying out this form of the invention, reference
tubing and is fed in such manner as to exclude the pres
may be had to my copending application entitled Tubular
ence of any oxygen whatever. Three forms of novel 25 Structure and Method of Making the Same ?led on No
apparatus have been provided for providing the nitrogen
atmosphere.
vember 16, 1959.
It will be seen that a pair of tubes
24 and 25 may be mounted between the stationary jaw
It is accordingly an object of the invention to provide
17 and movable jaw 13 in such manner that the adjacent
a novel method of excluding oxygen from the space in
end portions in the movable jaw are forced into the die
which parts of tubing are being subjected to frictional 30 members ‘14 and 20 and subjected to intense frictional
heat to thereby prevent oxidization of such parts.
heat whereby the end portions of the tubes 24 and 25
Another object of the invention is to provide novel
within the die members 14 and 20 will be permanently
apparatus for carrying out the novel method above re
joined. Should such action take place in normal atmos
ferred to.
phere containing free oxygen, the parts of such tubes so
A further object of the invention is to provide novel
subjected to frictional action would, due to the high
means for supplying a constantly renewed atmosphere
temperatures imparted thereto by such friction, tend to
of an inert gas to the space adjacent parts being subjected
combine with the free oxygen in the air and- thus become
to frictional heat.
oxidized and hence brittle, weakened and of no value.
A still further object of the invention is to provide
It will be seen that by opening the valve 23 the inert
apparatus of the character set forth which is simple in 40, gas in the container 21 is allowed to pass through the
construction, inexpensive to manufacture and yet effec
tube 22, thence through the passageway 18 in the shaft
tive and e?icient in use.
12 and through the passageway 19 in the die member 2i)
Other and further objects of the invention will become
to thus enter the interior of the tube 24. This action
apparent from a reading of the following speci?cation
will force any air from the interior of the tube 24 through
taken in conjunction with the ‘drawings, in which:
an outlet valve 26 of any suitable character provided in
FIGURE 1 is a side elevational view, partly broken
the stationary jaw 17. Thus air is excluded from the
away, illustrating one form of apparatus provided by the
parts of the tubes 24 and 25 which are being subjected
present invention,
to the heat of friction as aforesaid thus preventing oxidi
FIGURE '2 is a plan view of the apparatus shown in
50 zation of such parts.
FIGURE 1,
Referring now to that form of the invention illustrated
FIGURE 3 is an end elevational view of FIGURE 1
in FIGURES 4 and 5, it will be seen that there is provided
taken substantially along line 3—3 of FIGURE 1 in the
a spinning machine 3% having a motor 31, a drive shaft 32,
direction of the arrows,
a movable jaw or “spinner” 33, a shaping die 34, a base
FIGURE 4 is a side elevational view, partly broken
55 35, an upright standard 36 and a stationary jaw 37, all
away, of another form the invention may assume,
of which parts are substantially identical with those de
FIGURE 5 is a sectional view taken along line 5-5 of
scribed with reference to the ?rst form of the invention
FIGURE 4,
above described.
FIGURE 6 is a fragmentary side elevational view,
In this form of the invention, a hood 38 entirely en
partly broken away, of still another ‘form the invention
60 compasses »the machine 30. A container 41 for inert gas
may take, and
such as nitrogen is mounted outside the hood 38. A ?t
FIGURE 7 is an enlarged fragmentary sectional view,
ting 42 is provided in one Wall of the hood 38 and a tube
partly in elevation, taken along line 7—7 of FIGURE 2.
Referring more particularly to the drawings, there is
43 interconnects the tank 41 with the interior of the hood
shown therein, in ‘FIGURES 1, 2, 3 and 7, one form of
33 by means of the ?tting 42. A control valve 44 is pro
apparatus according to the present invention in which 65 vided in the tube 43 and an escape valve 45 is mounted in
a spinning machine is generally indicated at 19* and is
the hood 33 at a point remote from the ?tting 42.
provided with a motor ‘111 having a shaft 12 to the inner
In carrying out this form of the invention, it will be
end of which is .a?ixed a movable jaw '13 in- which is, in
seen that since the entire spinning machine is enveloped
turn, mounted a shaping die or “spinner” 14.
70 in an atmosphere of inert gas, no oxygen may at any time
The motor 11 is mounted upon one end portion of a
come into contact with the work, particularly that por
platform 15 while upon the other end portion thereof is
tion of the work being subjected to the heat of friction
3,045,741
4
and it thus becomes impossible for oxidization to take
place in such work pieces.
While but certain forms of the invention have been
shown and described herein, it will be readily apparent to
those skilled in the art that many minor modi?cations
may be made without departing from the spirit of the in
vention or the scope of the appended claim.
What is claimed is:
In combination with a spinning machine for joining
coaxially disposed metal tubes and having a base, a motor
Referring now to the ?nal form of the invention illus
trated in FIG. 6, it will be seen that there is again shown
a spinning machine generally indicated at 50 having a
motor 51, a drive shaft 52, a movable jaw or “spinner”
53, a shaping die 54, a base 55, an upright standard 56,
and a stationary jaw 57, all of which parts are again sub
on said base, a standard on said base in spaced relation to
stantially identical with those above described with refer
10 the motor, a ?xed work-holding jaw carried by said stand~
ence to the foregoing forms of the invention.
ard, a shaft for said motor, a rotatable jaw mounted on
In FIGURE 4 only one tube 25 is shown. However, it
said shaft at that end of said shaft facing the ?xed jaw, a
will be understood that this is merely for the purpose of
die carried by said rotatable jaw, said rotatable die being
illustration and that in actual practice, the ‘dies 34 and 54
adapted to embrace the ends of said tubes for joining
will be utilized to join adjacent end portions of an outer
tube ‘25 with an inner tube 24 as referred to above in de
scribing the ?rst form of the invention.
Again, referring to FIGURE 6, it will be seen that
an opening 58 is rovided in the wall of the tube 25. Such
opening is conventional and later utilized for the posi
tioning therein of a suitable ?tting.
A container 59 of inert gas is mounted at some suitable
position adjacent to or upon the base 55 and is provided
with a ?exible tube 69 having a control valve 61 adjacent
its free end.
In utilizing this last form of the invention, it will be ap
parent that the operator of the machine 50, after placing
the work pieces in the machine and starting the motor 51
to revolve the “spinner” 53, may then open the valve 61
and place the free end of the tube 60 over the opening 58
to introduce into the space between the tubes 24 and 25
the inert gas to thus prevent oxygen in the air from con
tacting the engaging parts of the work pieces, thus pre
venting oxidization thereof. The tube 60 may, of course,
be clamped in position over the opening 58 by any suit
able means, if so desired.
them together by spinning and heat developed thereby,
said ?xed jaw being adapted to hold the other ends of
said tubes stationary while said tubes are being joined at
their die-embraced ends, and means for supplanting air
in the space between said metal tubes by an inert gas, said
means comprising a tank of inert gas under pressure
mounted on said base adjacent said machine, and a ?exible
itubing extending from said tank whereby the free end
of said tubing may be placed over an opening formed in
the outermost of the metal tubes to introduce such inert
gas into the space between the tubes while expelling air
therefrom.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,313,474
‘2,419,864
2,449,247
2,901,932
Hill __________________ __ Mar. 9, 1943
Westin ______________ __ Apr. 29, 1947
Paucek ______________ __ Sept. 14, 1948
Erdelyi ______________ __ Sept. 1, 1959
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