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Патент USA US2408323

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‘Sept. 24,1946.
J, D, LEAR‘ ‘
'
2,408,322 __
_ MACHINE FOR-WINDING FIN STOCKS
Filed Aug. 16, 1943
4'She6tS-Sl'ie9t vl
INVENTOR
Jose 11 D. Lear
ATTORNEY
Sept. 24,‘ 1946.
2,408,322
J. D. LEAR
MACHINE FOR WINDINGLFIN STOCKS
Fi1e<_i 1mg. 16, 1943
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Sept.‘ 24, 1946,
‘J. D. LEAR
'
2,408,322 . ~
MACHINE FOR WINDING FIN STOCKS
Filed Aug. 16, 1943
_ 4 Sheetg-She'et 3
w
.
25'
INVENTOR
,
$9
‘
'
I
'
Joseph Z7.Lear
94%.
ATTORNEY S
Sept. 24,- 1946. I
' J. D. LEAR ‘
2,408,322
MACHINE FOR WINDING FIN STOCKS
Filed Aug. 16, 1945
4SheetS-Sheet 4
m V E NT.m
ATTORNEY S
Patented Sept. 24, 1946
2,408,322
UNITED STATES PATENT OFFICE
2,408,322
MACHINE FOR WINDING FIN STOCKS
Joseph D. Lear, Buffalo, N. ,Y'., assignor, by mesne
assignments, to Fedders-Qu'igan Corporation,
Buffalo, N. Y., a corporation of ‘New York
‘
Application August 16, 1943, ‘Serial No. 498,845
13 Claims. (Cl. '153f64.5)
1
2
’ This invention relates to the manufacture of
Fig. 7 is a sectional elevation of a portion of
spiral or helical ?nned tubing and more particu
larly to the Winding of the ?n stock in ribbon form
spirally on the periphery of a tube. In my‘ prior
Patent No. 2,152,437, I have-disclosed and claimed
the mechanism of Fig. 6, the section being taken
approximately along the line ‘I—‘! of Fig. 6;
. Fig. 8 is a. perspective illustrating the manner
in which the ?nstockis wound on the tube; and
Fig. 9 is a transverse, sectional elevation of
apparatus for winding ?n stock upon the periph
ery of a, tube by mounting the tube for rotation
the mechanism shown in Fig. 3, with the section
and moving the ?n applying mechanism along the
taken approximately along the line 9-9 of Fig. 3.
rotating tube to wind the ?n stock thereon. The
Referring ?rst to Figs. 1 and '2, which illustrate
present invention is in the nature of an improve 10 a general diagrammatic layout of an improved
ment upon the subject matter of said prior patent.
winding machine constructed in accordance with
An object of this invention is to provide an im
this invention, associated with desirable auxiliary
proved mechanism, for winding the ?n stockv spi
rally and progressively on the periphery of a tube;
mechanism, the improved winding mechanism W
is mounted upon a base I.
At one side of the
with which the mechanism remains relatively 15 base I is asuitable trough-like guide 2 supported
stationary and the tube is moved progressively
by pillars 3. A tube 4 to which a spiral ?n is to
be applied is placed in the trough 2 and moved
through the mechanism; which will wind the rib
bon stock snugly and uniformly on the rotating
endwise to the mechanism W, and after passing
and endwise moving tube; and which will be
through that mechanism where the ?n stock in
relatively simple, compact, light in weight, rapid, 20 ribbonyform is wound spirally on the tube, the
in action and inexpensive.
tube 4 passes through a ?uxing device 5 also
Another object of this invention is to provide
mounted on the base I, and then through a sol
an improved machine for applying ?n stock pro
dering device 6 mounted on a base 1. From the
gressively'and spiral-1y to the periphery of a tube,
soldering device 6, the tube with the ?n soldered
which will require a minimum of power to operate, 25 thereon passes to, and is supported by another
and which will produce a product of high quality,
trough or upwardly opening channel guide 8 sup
with the ?n properly positioned and spaced there
ported on pedestals 9.
on.
Referring now to Figs. 3 to 9 particularly, the
Another object of the invention is to provide
1 mechanism W for applying the ?n stock spirally
an improved method of winding ?n stock spirally 30 to the tube 4 includes a tubular sleeve or bushing
on a tube, which will be relatively simple, efficient,
I0, Fig. 3, having a bore of a size to receive and
practical, rapid and inexpensive.
slidingly and rotatably mount a stretch of tube
Other objects and advantages will be apparent
4 which is fed endwise therethrough. The :bore
from the following description of one embodiment
'_ of the bushing I9 is disposed in endwise alinement
of the invention, and the novel features will be 35 with the trough 2 so that tubes pushed endwise
particularly pointed out hereinafter in connection
along the trough 2_will enter the bore of the bush-'
with the appended claims.
ing. II]. This bushing I0 is disposed within a hous
In the accompanying drawings:
ing or casing II, which is supported on the base
Fig. 1 is a plan of a mechanism for applying
, I and has an opening I2 through which the end
?n stock spirally and progressively to the periph- 40 of they bushing I0 is exposed to receive the tube
ery of a tube in accordance with this invention;
Fig. 2 is aside elevation of the same;
Fig. 3 is a sectional elevation through the ?n
ll.
The housing II has an upright supporting
?ange I3 which divides the housing into com
partments Hand I5. This ?ange I3 is provided
concentrically of the bushing It with a laterally
stock ‘applying mechanism, the section being
taken ‘approximately along the line 3-3 of Fig. 4.5 elongated bearing hub I6, which mounts a rolling
1;
bearing ll. Rotatably supported by the rolling
~
Fig. 4 is a longitudinal sectional elevation
through a portion of the mechanism of Fig. 3;
Fig. 5 is a transverse sectional elevation
through a portion of the mechanism of Fig. 3,
the vsection being taken approximately along the
line 5—5 of Fig. 3;
t
Fig. 6 is a sectional plan of a portion of the
mechanism of Fig. 3, the section being taken
approximately along the line Ii‘-—B of Fig. 3';
bearing I1 is a bushing I8 which is approximately
coextensive in length with the sleeve Ill.
The outer end of the sleeve I0 is provided with a
laterally turned peripheral ?ange I9, which abuts
against the end of the bushing I8 and a cup
shaped shell 29 telescopes over the ?ange I9 and
the adjacent end of the bushing I8 and is thread
ed upon the bushing I 8 so as to clamp the flange
I9 against ‘the end of bushing I8. This shell 20
2,408,822
4
has an opening in its end wall of approximately
periphery of each roller 45 is also ?uted or ribbed
the same size as the bore of the sleeve In, which
opening is larger at its outer end than at its inner
peripherally extending ribs which, if the rollers
end and tapered between them so as to receive
the end of a tube 4 and guide it into the bore of
or bite into the tube su?ioiently to rotate the tube
the sleeve I0. A gear 2| is clamped against a
shoulder on the periphery of the \bushing l8 by
the shell 20, the gear 2! being disposed. in the
chamber 1 4. Another gear 22 is rotatably mount
ed upon the periphery of the :bushing [8 at the 10
opposite side of the bearing H from the gear 2!
and within the chamber 15 of this housing.
A pinion 23 is threaded upon a laterally ex-'
tending hub on the gear 22, which pinion 23 is
disposed or spaced in a direction lengthwise of
the tube 4 from the gear 22 and Within a chamber~v
24 of a rotatable housing 25. This housing 25 is
formed of a laterally extending ?ange .26 on the
inner end of the bushing 18, which ?ange has, at
its outer periphery, a laterally turned rim or
?ange 21 which is concentric with the axis of the
tube 4. A plate 28 secured to the end of this lat
in a peripheral direction so as to provide small
are pressed against the tube periphery, will grip
about its longitudinal axis when the rollers are
bodily rotated with the tubular member about the
longitudinal axis of the‘ tube
:1 ,
The other arm‘of each bell crank lever 38 ex
tends generally parallel ‘to the tube 4 and at its
end is su?iciently heavy or weighted, so as to
overbalance to a substantial extent the end carry
ing the'roller 40. Thus when the tubular mem
- the tube 4 in a position between the pinion 23
ber 35 is rotated with the shell 30 of housing 25
about the axis of the tube 4, the bell crank levers
will be rocked by centrifugal forces in directions
to press the rollers 40 tightly against the periph
ery of the tube 4 which is between them in the
tubular. member 35. The faster the rotation, the
greater will be the gripping force of the rollers 40
against the tube by reason of the increasing cen
trifugal forces. Hence the tube 4 will be rotated
positively with the tubular member 35 about the
axis of the tube, notwithstanding that the rollers
and gear 22 and a suitable seal 29 is provided
between it and housing II. The chamber 24 is
thus in communication with the chamber l5 in
the space surrounding the pinion 23 and gear 22.
pins 4i, and thus pass the tube 4 endwise while
rotating it.
In order to provide for an initial grip between
erally extending ?ange 21 extends radially toward
Also forming a part of the housing 25 is a some
what cup-shaped shell 33 which telescopes over
the ?ange 21. The bottom of this shell extends
toward the tube 4 and carries at its center, and
concentric with the tube 4, a removable bushing
3!, which at its right-hand end in Fig. 3 has a
converging, tapered entrance to a bore of a size
which receives and slidably and rotatably sup
ports the tube 4, so that as the tube is inserted
in the sleeve 10, it ‘will be guided into the bore
of the bushing 3| and thus farther through the
40 are free to rotate about their own axes or pivot
the rollers 43 and the tube 4 when the machine is
idle or rotating at a very low rate, each weighted
end of each bell crank lever may be provided on
its side towards tube 4, with a recess containing a
spring 142 which is under compression between
an adjustable plug at the bottom of the recess and
the hub of member 35. ‘ Each spring I42 urges its
related bell crank lever in a direction to press the
roller 40 on that‘ lever'against the tube 4. The
rollers 4B are disposed as closely as possible ad
jacent the end of the tubular member 35 from
40 which the tube 4 leaves or the exit end of the bore
. of bushing 35, so that the turning torque on the
The shell 30 has a laterally extending hub 32,
machine.
'
v
tube will be effective as closely as possible to the
portion of the tube leaving the end of the bush
ing 35 where the ?n is wound thereon. By ar
threaded end is a tubular member 35. Threaded 45 ranging the rollers as closely as possible to the
into the free end of this tubular member 35 is a : point where the turning torque is applied through
the pull of the ?n stock'as it is wound on'the
short bushing 35 which has a bore that is the
tube, there will not be an opportunity for large
same size as, and alined with, the most restricted .
torsional movements of the tube 4 with resulting
part of the remainder of the bore of this tubular
member 35, so that the bore of the bushing forms 50 inaccuraciesror variations in the rotation of the
tube 4 or in the winding of the ?n ribbon on the
a continuation of the smallest bore portion of
tube. By mounting the levers 38 with the rollers
the member 35. This bushing 36 has a laterally
close to the bushing 36, and the levers extending
and outwardly turned ?ange which serves as an
therefrom along the tube in a direction opposite
abutment against which the ?n stock is guided
as it is wound upon the periphery of the tube 4. 55 to the direction of endwise travel of the tube, the
pivots 39 can be intermediate the ends of the le
The tubular member 35 has a portion 31 extend
vers, and the rollers can be carried by the mem
ing in opposite directions from the central por
ber 35 for bodily rotation therewith, yet close to
tion, see Fig. 5, and rotatably mounted on this
the exit end of that member 35.
portion 31, but on diametrically opposite sides of
It will be observed from the foregoing that the
the tube 4, are bell crank levers 38.
60
gear 2| in the chamber I4 is ?xed upon the bush
The pivot pins 39 of these bell crank levers are
ing l8 which is rotatably mounted in the rolling
carried by the portion 37, and the axes of the pins
bearing I7, and this bushing through the ?ange
39 are crosswise of but offset from the axis of the
26 and shell 30 of the housing 25, rotates the hub
tube 4. One arm of each bell crank lever extends
toward the tube 4 and at its free end rotatably 65 32 which is also rotatably supported by the bear
ing 33 and mounts the tubular member 35.
supports a roller 43 by a pin 4|. The tubular
Referring now particularly to Figs. 6 and 7, the
member 35, immediately adjacent the inner end
pinion 23 meshes with and drives an idler gear 43
of the bushing 36 is provided with recesses or
pivoted on a stud 44 carried by a bearing portion
cross passages 42, see Fig. 5, so that the rollers
40 can pass through these recesses and engage 70 formed on the ?ange 26 ofthe housing 25, and
this gear 43 in turn meshes with a gear 45 ?xed
the periphery of the tube 4 passing through the
on a shaft 46 rotatably carried'by the bearing
tubular member 35. The periphery of each of
portion formed on the ?ange 25.‘ This shaft 45
these rollers 45 is concave in transverse cross sec
extends through the ?ange 26 into the chamber
tion, with a curvature such as to approximately
formed by the shell 30 as it telescopes over the
?t the convex periphery of the tube 4,- and the
which is rotatably mounted by a rolling bearing
33 in a bearing standard or upright 34. The free
end of the hub 32 is threaded, and upon this
2,408,322
5
6
flange 26, and in‘the portion within the shell 34';
‘this shaft 46 carries, v?xed thereon, aworm screw
roller'15 that is similar ‘in diameter andjperiph
41,seeFigs.6and9."
l
w
'
~
‘
ery to roller '66. The shaft13~atonefend has a
reduced, threaded ‘portion upon which ~the roller
Referring now particularly to Fig. 9,. this worm
15 is threaded against a shoulder between vthe I’G-r
screw 41 meshes with and drives a small worm
wheel 48 which is secured ?xedly upon a shaft 49.
duced threaded portion and the bearing part of
the shaft to key. this roller to its shaft. A nut 16
This shaft 49 has at one end a head 50 which
abuts against an end face of‘ the gear 48.
‘ Adjoining the head 5El,theshaft 49 is thread
ed as at 5!, and is then provided with a reducedv
threaded portion 52 with a shoulder 53 between
these two threaded portions. ' Beyond the thread
ed portion 52, the shaft is provided with a
is threaded upon the threaded end of thes'haft13
and acts as a lock. nut to prevent .unthreadingof
the roller 15. This roller 15 also bears against
smooth periphery where it passes‘ through spaced
bearing bushings 54 provided in an internal
flange 55 on the inside face of housingiiii, This
smooth shaft portion, adjacent its free end, is
the periphery of the tube 4.
Similarly, the other arm of the bell crank 68ris
also provided with a bearing 11 similarjto bear
ing 12 which rotatably supportska shafti18. This
shaft at one end carries a bevel gear 19 ?xed
thereon and which meshes with the bevel gear 51.
At the other end of the bearing 11, the shaft 18
mounts a roller 89 which is threaded on the re-:
provided with a still further reduced portion 56
duced endportion of the shaft 18 in the same
on which a bevel gear 51 is secured and the‘ ex
manner that was explained for the mounting/20f’
treme end of this shaft 49 is threaded and 20 the roller-15 of the shaft 13. ,J'I‘he roller IE0 is
secured against unscrewing by a. lock" nut" 8|
mounts a nut58. Threaded upon the larger
threaded upon the shaft 15' The rollers 15 and
threaded portion 5! of shaft ‘49 is a bushing 59'
85 ‘have peripheries which are concave in ‘cross
which abuts at one end against the (gear 48 and
clamps it against the head 50 of the shaft. ‘The
section, so as to ?t the periphery of thetube?,
gear 48 has a threaded bore so that it is threaded
and of the same diameter as roller 66.
upon the threaded portion 5! against the head
50 of the shaft 49 and locked in that position by
noted from Fig; 9, ‘that these rollers :65, ‘15 and
the engagement therewith of an end of V the
" riphery of the tube 4 and bear radially against
the tube 4. The periphery of each of these roll
ers 66, 15 and 80 is preferably provided with
crosswise ribs which grip or bite into the periph
ery of the tube 4 sufficiently to feed the tube 4:
endwise when all of the rollers 66, 15 and 80 are
bushing 59.
The bushing 59 which thusvfunc
tions as a lock nut may be held against turning
by a transverse pin 60 which passes through the
bushing and the shaft.
The lock nut bushing 59 is rotatably received
in a bearing lining or bushin-g?i, carried by'a
It will be
Staredisposed 120 degrees apart around‘ the pe- '
rotated.
.
,
bearing boss 62 provided on the inner face of‘
housing 25. Threaded upon the reduced thread
ed portion 52 of the shaft and against the shoul
It will be noted that the worm screw 41 "drives
' the worm gear 48, and the latter through its
mounting on the shaft 49 drives .the bevel gears.
63 and 51. The bevel gear 5.1‘drives the bevel
der 53 is a bevel gear 63, and a shim or thrust
gear 19 and through it and the shaft 18 drives
washer 64 is disposed between one end face of the
bevel gear 83 and the end of the adjacent bear 40 the roller 80. The bevel gear 63 drives the bevel.
ing ‘bushing 54. By tightening the nut 58 on the
smallest end of the shaft 49, the shaft will be
pulled endwise so as to bring the shoulder ‘53
against the bevel gear 63 and clamp the bevel
gear between it and-the thrust washer 64,‘ and at
the same time press the bevel gear 51 against the
end of the bushing 54. A pin 65 may be passed
through ‘the bevel gear 51 and the shaft 49 to
de?nitely secure the bevel gear 5-1 to'the shaft in
addition to the clamping of that gear against the .
, gear 14 and through it drives the roller '15.
The ‘
roller 66 is keyed on the shaft 49, and‘thus'all I
‘of the rollers when rotated in this manner will
feed the tube 4 in the same direction, which will
be to the‘ left in Fig. 3. The spring 1|’ normallyv
rocks the bell crank'levers 58 andv 69 in directions.
, to press the rollers 80 and 15 radially against.
the periphery of the tube 4 and thereby to press.
the tube 4 against the periphery of the roller 66.
When the housing 25, is rotated, the bell cranks
68 and 59 will be bodily rotated about the axis
shoulder between the two reduced smooth sec
tions under the pressure of the nut 58. Keyed
of the tube 4, andthis rotation will create cen.-~.
trifugal forces on the weights .1!) tending to sepa—
upon the smooth part of theshaft 49 between the
rate them and move them towards positions in
bearings 54 by‘ a key 49a is a roller 66 with a pe
which the weights 1!] would be actually alined
riphery that is arcuately concave in transverse
with the pivots 61 and. the axis of the tube 4.
section. The center of curvature of this concave
curvatureis approximately that of the tube 4
This movement will tend to force the rollers 15
and 39 against the periphery of the tube~4 with:
where it contacts the tube so that it will ?t the
tube as shown clearly in Fig. 9.
a greater force than that created ‘by therspring
Mounted on an inner wall face of the housing (30
25 by pivot screws or studs 61 (Fig. 9) are two bell
There is sufficient play between the bevel gears
51 and 19 and betweenthe bevel gears 63 and 14
crank levers 68 and 69. These bell crank levers
68 and 69 have arms normally extending approx
to allow of a limited rocking movement of the
bell crank levers without causing disengagement
imately parallel to one another at opposite side
of the meshing bevel gears. Thus the tube 4 will
faces of the roller 66 and at the free ends of these
arms have weights 10 which are urged apart by a
be gripped tightly by the rollers, and since the‘
compression spring 1| that at its ends is received
rollers are transversely ribbed, the positive rota
in recesses in the weights 10. The other arm of
tion of all of these rollers will feed the tube endthe bell crank 69 is provided with a bearing 12
wise at a rate determined by the rotation 'o-fthe
which rotatably supports a shaft 13 that has
worm screw 41. ‘Since this worm screw 41 re
Gear
ceives its motion from the pinion 23 and the gear
14 meshes with and is driven by the bevel gear
22, this rotation will depend upon the rate at
or pinion 63 on the shaft» 49. The bevel‘ gear 14 is
which the gear 22 rotates.
'
'
at one end of the bearing 12 and mounted upon
Referring now to Fig. 6, the gear 22 meshes
the shaft>13 at the other end of the bearing iska» 75 with an-idler gear 82 which is ?xed upon a-shaft
?xed on one end thereof a bevel gear 14.
2,408,322
7
8
83' that passes through and is rotatably supported
wise thereto, and this will form a helical ?n on
the tube 4 as shown on the portion of the tube
by a bearing 84 carried by the ?ange I3.
The
other end of the shaft 83 has ?xed thereon a
gear 85, which meshes with and drives the gear
2| that is ?xed upon the bushing, I8. The idler
gear. 82 meshes with and is driven by a pinion 86
which is provided on the shaft 81 of a suitable
source of power such as an electric motor 88. It
4 at the left hand end of Fig. 3. .
,.
.
The disk 95, see Fig. 4, is provided with an in
tegral shaft or stud 96 which is rotatably mounted
in suitable ball bearings 91 carried within a tubu
lar sleeve 98. The sleeve 98 is mounted for end
wise sliding movement in the bore of a housing
99. A compression spring I88 is compressed be
will be noted from the foregoing that the shaft
81 of the motor drives one train of mechanism 10 tween an abutment I8I threaded through one end
composed of gears 86, 82, 22, pinion 23, idler 43,
gear 45 and worm screw 41 to provide for the
rotation of the rollers 56, ‘I5 and 88 all in a direc
tion to feed the tube 4 endwise at a speed de
pending upon the ratio of this train of gears.
Since the gear 82 is ?xed upon the shaft 83, the
gear 85 will rotate with the gear 82 at the other
of the housing 99 and an abutment I82 which is
threaded into a threaded bore of the sleeve 98.
This spring I88 continuously urges the sleeve 98
endwise in a direction to press a face of the disk
95 at its periphery against the exposed end face
of bushing 36, and since the ribbon is between the
periphery of the disk 96 and the end face of the
side of ?ange I3, and by meshing with the gear 21
bushing 36, ‘the ribbon will be held yieldingly
will rotate the bushing I8 at a much faster rate
against movement out of an edgewise relation to
the tube 4 as it is wound on the tube. The sleeve
98 is provided with a slot I83, which is elongated
in the direction of movement of the sleeve 98
under the action of spring I88 and a screw I84
carried by the housing 99 has an end extending
of revolutions per minute than the rollers 69, ‘I5
and 88 will be rotated.
’
Since the tube 4 is rotated at a rate depend
ent upon the rotation of the gear 2I, this means
that the tube will be rotated faster than it will be
fed endwise, yet the rotating and endwise moving
forces acting on the tube 4 will be derived from
the common motor or source of power 88. There
is thus a de?nite predetermined speed ratio be
tween the endwise movement of the tube 4 and
its rotary movement, which difference will de
termine the pitch of the ?n which is wound upon
the tube 4. By the foregoing mechanism, the
tube 4 will be moved endwise progressively
through the tubular member 35 and discharged
through the outer end of the bushing 36, and at
the same time will be rotated about its longitu
dinal axis. The ?n stock is wound upon the pe
riphery of the tube 4 at the discharge end of the
?ange 36 by mechanism which will next be de
40
scribed.
into'the slot I83 so as to limit the movement of
the sleeve 98 under the action of the spring I89
and prevent its hot action. By adjusting the
abutment I8I through turning it, the compression
on the spring I88 may be varied so that the de
sired pressure of the disk 95 against the ribbon
and the bushing 36 may be adjusted as desired.
The housing 99, Fig. 3, is provided with an
arm I05 which is hinged by a bolt or stud I89
on an upright bearing I81 provided on the base
of the machine, so that the housing 99 may be
swung laterally of its longitudinal axis and carry
the disk 95 edgewise of itself toward and from
the tube 4. The periphery of the disk 95 is bev
eled as at 95A, so that when the housing 99 is
swung toward the tube 4, this beveled edge 95A
The ?n stock is in the form of a continuous or
will engage against the ?ange of the bushing 38
long stretch of ?at, metallic ribbon 89 (Fig. 3).
and cam the disk in a direction endwise of the
This ribbon is conducted from a spool (not
shown) on which a supply of it is coiled, over
an idler roller 98'which is free to rotate on a stud
9I mounted on an upstanding bracket 92. From
tube 4 su?iciently to allow the peripheral edge
posed end face of bushing 36, and it is pressed
against that bushing by a rotatably mounted disk
95 '(Figs. 3 and 4) which at its periphery overlies
the end face of the ?ange on the bushing 36 and
closely approaches or touches tube 4. The disk
95 by pressing the ribbon against the end face of
the bushing 36 holds the ribbon in edgewise rela 70
upon the uses to which the ?nned tubing is to be
of the disk 95 to engage the tube 4.
The pivot I86 may be a bolt which when tight
ened clamps housing 99 in a position where the
periphery of disk 95 bears against or is in close
the roller 98, the ?n ribbon passes downwardly
proximity to the tube while the machine is in
through a crimping mechanism 93, in which
operation. The tube 4 with the ?n wound there
mechanism it passes between opposed crimping
rollers. 94 where one edge zone of the ribbon is 50 on then passes progressively and immediately
through the flux-applying device or box 5 where
provided with crimps that are shown in Fig. 8.
it is treated with a soldering flux and then
Any suitable crimping mechanism may be em
through the soldering box 8 where solder is ap
ployed, and another form of such mechanism is
plied to secure the ?n securely to the tube. The
shown for example in Fig. 6 of my prior patent
tube with the ?n attached and soldered thereon
above identi?ed. The ribbon 89 with one crimped
then emerges and passes along the trough 8.
edge then passes downwardly to meet the periph
Lengths of the tube may be coupled together so
ery of the tube 4 in a direction tangentially there
that it will be fed progressively through the ma
to, with the ribbon disposed edgewise of itself
chine for a considerable period, and the ?n will
against the tube periphery. In other words, the
plane of the metallic ribbon is crosswise of the 60 be wound continuously on the connected lengths
and soldered thereto. The tube with the ?ns se
axis of the tube at the zone of contact of tube
cured thereon can then be cut into the desired
and ribbon.
lengths or bent into the desired shapes, depending
One face of the ribbon abuts against the ex
pu
.
,
4 so that it will rotate therewith, then as the tube
is rotated and moved endwise, this ribbon will be
In order to limit the angular movement of each
of the bell cranks 68 and 69,'the housing 25 is
provided with a pair of studs I88 vand I89. The
stud I88extends through an elongated slot H8
in that arm of hell crank 68 which carries the
bearing “I1 and mounts the roller 88, and this
stud I88 by its engagement with the ends of the
slots II8 will limit the possible movement of the
bell crank 68 in both directions. When no tube
wound spirally on the tube 4 while held edge-,
'4 is in position between the rollers 66, ‘I5, and
tion to the tube 4 as it is wound thereon.
The
leading end of the ribbon is fastened to the tube
,' 2,408,322
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10
,
80, the spring 'H would normally shift the rollers
15 and 180 into contact with the roller ‘66 and
. make; it‘ difficult to ‘insert a new stretch of tube
would be advantageous‘ for rotating the tube, but
spafce usually prevents the use of more than two
rollers v49. For best results the rollers 40 should
be spaced from the exit end of the bushing 36
in distance less than approximately six times the
extent that no particular difficulty is encountered
diameter of the tube.
in inserting a new stretch of tubingv 4 which by
It will be understood that various changes in
engagement with roller 80 cams it aside. The
the details, materials and arrangements of parts,
stud I09 similarly is received in an elongated slot
which have been herein described and illustrated
III in the arm of hell crank 69 which mounts 10 in order to explain the nature of the invention,
the roller 15, and similarly limits the movement
may-be made by those skilled in the art within
4 into the machine. The stud iUS, however, lim
its such movement of the roller 8E! to such an
of the roller 15 in a direction toward and from
the roller 66 for the same reason.
the principle and scope of the invention as ex
pressedin the appended claims.
It is believed that the operation of the device
I claim as my invention:
1. A machine for winding ?n stock in ribbon
for winding the?n stock spirally on the tube 15
will. be clear from the foregoing description, and
form spirally on the periphery of a tube which
comprises a tubular member having a bore there
for that reason, it will not be summarized. It
through of a size to slidingly receive a tube to
will be noted, however, that there is a de?nite
which a ?n is to be applied, means rotatably
speed ratio between the endwise and rotary move
ment of the tube 4 which rotation and endwise
mounting said‘ member for rotation about the axis
of said bore, a plurality of levers mounted on
feeding is caused by different trains of mecha
nism from a common source of power, so that
said member for oscillation about axes cross
this. ratio when once determined to ?x the pitch
wise of and offset from the axis of said bore, each
of said levers having at one end a roller engage- ‘
of the spiral ?n, that‘is the distance between ad
jacent ?ns, will remain constant, regardless of 25 able with the tube in said bore close to the exit
end of said bore and its other end progressing
the speed of operation of the device. The faster
along said tube and away from its roller in a
the machine operates, the greater will be the grip
direction opposite from the direction of travel of
on. the tube by the rollers which rotate the tube
said tube and over-weighted so as to serve as a
and of the rollers which feed it endwise. The
centrifugal weight which, when said member-is
contact between the rollers which feed the tube
rotated, will move outwardly and force its roller
endwise may be at some distance from the zone
against said tube in said bore with a force in-'
ofv the tube where the ?n is applied, because the
creasing with the rate of operation, each of said
endwise feeding movement merely causes a com
rollers having a' peripheral surface vformed to
pressive action on the tube which does not distort
35 grip said tube sufficiently to cause it to rotate with
the tube.
' If the same rollers rotate the tube also, then
said member, spring means. yieldingly urging said
there would be considerable twist of the tube be
levers in directions ‘to cause said rollers to en
tween the poi'nt of application of the rotating
‘ gage said tube, means for causing endwise move
ment of said tube through said bore, and means
force and the application of the ?n thereto, which
twist will vary with different speeds and create a 40 for delivering said ?n stock in ribbon form pro
non-uniform product. With the rollers‘ which
give the tube its rotary motion, separate from
gressively to the portionof the tube leaving said
member, with the ribbon abutting edgewise of
the rollers which feed the tube endwise, and en
gaging the tube as closely as possible to the point
of application of the ribbon to the tube, the twist
between such rollers and the portion of the. tube
where the ?n is wound thereon will be negligible,
and will not produce any material irregularity in
thewinding of the ?n ribbon on thetube. By
having the rollers which rotate the tube separate
itself against the periphery of the tube.
»
2. A machine for winding ?n stock in ribbon
form spirally on the periphery of a tube which
comprises a member, means mounting said mem
ber for rotation, said member having a bore con
centric with its axis of rotation, means for feed
ing said tube endwise of itself through said bore,
from the rollers which feed it endwise, one may,
a plurality of levers pivotally mounted on said
member for .r'bodily rotation therewith and inde
by changing the speed ratio between the motor
pendently rocking thereon and arranged about
and the gears 2| and 22, vary the pitch of the ?n
It will be noted from, Figs. 3 and 9 that the
rollers 66, 7'5, and 80 are arranged about the axis
of the tube 4 at intervals of 120 degrees. This
said axis equally, each lever mounting a roller
on‘ its end nearest. the exit end of said‘ bore and
contacting said tube in close proximity to said
exit end of said bore in a direction radially of the
bore, the other arms of said levers extending
effectively centers the tube. keeps the tube axial,
generally parallel to said axis, from their pivotal
and gives a three point support to the tube.
mountings in a direction opposite to the move
as wound upon the tube.
It is
also desirable to grip the tube through a consid 60 ment of the tube through said bore, and overweighted, whereby when said levers rotate with
erable peripheral surface zone thereof and if the
contact area between each roller and the tube'is
said member.,_ said overweighted arms will be
too extensive, it is difficult to so shape the sur
faces of the roller and tube ‘as to provide uni
form contact over all the entire abutting areas
.moved‘outwardly by centrifugal forces and to,
press said rollers against» said tube,'spring means
: . yieldingly urging said levers in directions to cause‘
between vthe roller and the tube. , By using three
rollers spaced. evenly around the tube, the pres-
to rotate with said member as, it moves through
sure on the tube will be more uniform and .a more .
effective contact between the concave surface of
the. roller and the tube can be obtained. I. have
found that this provides a particularly depend
able and e?‘icient feeding means for the tube, and
said rollers to grip said tube and cause. said tube
said bore, and means for delivering said ?n. stock
in ribbon form progressively to the portion of the
tube leaving said here with theribbon edgewise
of and tangentially to said tube so as to be wound,
spirally on said , tube as the tube rotates and
moves endwise.
the‘pressure of the rollers on. the tube will be.
3. A machine for winding ?n stock in ribbon.
increased by centrifugalv action with an increase
in speed. Forsimliar reasons three rollers‘ 40‘. 75 form spirally on the periphery of a tube, which
"2,408,322
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the periphery of the tube, levers mounting at
least two of said rollers which when rocked will
tube passing through the sleeve, and resilient
tated with said tube exit extension ‘about said
comprises a member having a bore of a size to
axis while passing said tube endwise therebe
receive'and pass said tube, a plurality of rollers
‘tween, means yieldingly urging said rollers into
engaging said tube at a distance from the exit
contact with said tube, means disposed in said
end of said bore less than six times the diameter
of said tube and arranged equally about the lon CI! housing between said bearings for gripping said
tube and feeding it endwise of itself through said
gitudinal axis of said bore, and rolling to pass
extensions and housing, a common source of
the tube therebetween, levers pivoted interme
power, and means driven by said source of power
diate of their ends on said member for rocking
for rotating said housing and its extensions about
movement about pivotal axes lying in planes
crosswise of the longitudinal axis of said tube, 10 the longitudinal axis of said tube to cause said
rollers to rotate said tube about its longitudinal
said levers mounting said rollers on the ends of
axis at one speed and to operate said feeding
their arms nearest the exit end of said bore and
means to move the tube endwise at a different
having the other arms extending generally par
speed, whereby a de?nite ratio of rotative and
allel to the longitudinal axis of the tube and in .
endwise movements of said tube will occur for all
a direction from their pivots generally opposite
rates of operation of said source of power, and
to the direction of travel of said tube through
means for winding said ?n stock in ribbon form
said bore, said levers on their said other arms
upon the tube at the exit end of said one exten
having weights which overbalance the roller car
S1011.
rying ends, spring means urging said levers in
6. In a machine for winding ?n stock in ribbon
directions to press said rollers against said tube,
form spirally on the periphery of a tube, power
and means for winding the ?n stock in ribbon
operated means for simultaneously moving the
form spirally on said tube at the exit end of said
tube lengthwise of its own axis and also rotating
bore.
the tube about its own axis, thereby to impart
'4. A machine for winding ?n stock in ribbon
form spirally on the periphery of a tube, which 25 to the tube a screw-like motion, said power oper
ated means including a sleeve through which the
comprises a member having a bore therethrough
tube passes, said sleeve having a face at its dis
of a size to slidingly receive said tube, three
charge end, a guide disk mounted adjacent the
rollers having their peripheries concave in trans
end face of the sleeve and adapted to closely abut
verse cross section, abutting the periphery of
said tube and disposed with their shortest periph— 30 the same, a shaft for rotatably mounting the
disk, a housing for supporting the shaft disposed
eral radii in planes normal to the curved surface
adjacent the end of the sleeve and being parallel
of the tube, so that the rollers will have relative
to but oiiset from the axis of the sleeve, means
rolling motion along the length of the tube, said
for directing the ?n stock between the guide disk
rollers being arranged 120 degrees apart around
carry the rollers mounted thereon toward and
from said tube moving in said bore, spring means
for urging said levers in directions to press the
rollers carried thereby against said tube and press
said tube against the other of said rollers, means
mounting said levers for bodily rotation about
the longitudinal axis of said tube, and said levers
having weighted ends positioned to move by cen
trifugal forces due to said bodily rotation in di
rections to press the lever carried rollers against
said tube with a force proportional to the speed
of rotation, means for rotating all of said rollers
and the end face of the sleeve there to engage a
means in the housing constantly urging the guide
disk against the end face and interposed ?n
stock.
7. In a machine for winding ?n stock in ribbon
form spirally on the periphery of a tube, power
operated means for simultaneously advancing
and rotating the tube thereby to impart to it a
screw-like motion, said means having a discharge
end, a guide disk mounted on a shaft, said shaft
having anaxis parallel to but offset from the
line of movement of the tube through said power
operated means, said disk being mounted normal
to the axis of said shaft, a housing for rotatably
at the same speed about their own axes and in
the same relative directions to feed said tube 50 receiving the shaft, a lineally movable sleeve
endwise, said rollers having peripheral surfaces
formed to drivingly grip the tube periphery and
feed the tube endwise, and means for winding
said ?n stock in ribbon form spirally on said
endwise moving tube beyond said rollers.
5. A machine for winding ?n stock in ribbon
form spirally on the periphery of a tube which
within the housing provided with bearings in
which said shaft is mounted, an end plate for
the housing, and a spring disposed between the
end plate and said lineally movable sleeve to urge
said sleeve, shaft, and disk against the discharge
end of said power operated means, and instrue
mentalities for directing ?n stock between said
disk and discharge end;
8. In a machine for winding ?n stock in rib-'
extensions at opposite ends thereof, bearings ro
bon form spirally on the periphery of a tube, a
tatably supporting said extensions on opposite
rotatable housing, sleeves secured to and con
sides of said housing, said extensions having
centric with the housing and formed with aligned
alined bores therethrough of a size to receive
bores adapted to receive a length of tubing to be
and pass endwise said tube, the tube exit exten
wound, power driven rollers in the housing
sion having, in close proximity to its exit end
radially disposed passages between ‘the exterior 65 adapted to grip a tube passing therethrough andv
to advance said tube through the housing in a
thereof and said bore, rollers disposed in said
lengthwise direction, a bearing adjacent the
passages, supported by said tube exit extension
sleeve on the discharge side of said housing to
for bodily rotation therewith and also movement
rotatably support said sleeve, said last namedv
towards and from said tube, and engaging said
sleeve overhanging said bearing in the direction
tube passing through that zone of the bore and
of movement of the tube, a second housing
disposed for relative rolling movement along the
mounted on said last named sleeve for rotation“
tube as the tube passes them, the peripheries of
therewith, a, second set of rollers rotatably.
said rollers being formed to grip a tube passing
mounted in said second housing, supporting
between them and rotate said tube about its lon
gitudinal axis when the rollers are bodily ro 75 means in said second housing disposed between
comprises a member having a housing and alined
2,408,322
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14
the axes of said second rollers and said bearing
for urging said second rollers into gripping en
gagement with a tube passing through said
sleeve, whereby upon rotation of said housings
sleeves through which the housing is mounted,
said sleeves having aligned bores through which
rollers and the discharge end of said second hous
of one of the drum housing sleeves, said exten
ing for directing ?n stock around the periphery
sion piece being formed with elongated and
lengthwise disposed slots terminating adjacent
the discharge end, ribbon guiding rolls disposed
a tube may-pass endwise, means in the drum
housing for advancing the tube lengthwise
said gripping rollers will rotate the tube as it is in through the sleeves from an entrance end to a
discharge end as the drum is rotated, an exten
advanced through the housings by said power
sion sleeve piece connected to the discharge end
driven rollers, and means adjacent said gripping
of the tube.
,
9. In a machine for winding ?n stock in rib
bon form spirally on the periphery of a tube, a
rotatably mounted housing provided with con
centrically disposed sleeves on either side for sup
porting the housing and receiving a tube to be 15
wound, means in the housing for engaging ‘a
tube and moving it lengthwise through the
at said end to direct the ribbon stock onto the
tube, and pivotally mounted rollers mounted on
said extension sleeve piece and projecting into
said slots to grip a tube for rotation. '
12. In a machine for winding ?n stock in rib
bon form spirally on the periphery of a tube, a
drum housing provided with concentric sleeves
sleeves and housings; a second housingmounted
for rotatably mounting the drum, bearings for
on the sleeve at the discharge end of‘ the ?rst
housing for rotation therewith, bell crank levers 20 supporting the sleeves, a plurality of rollers
mounted within the drum about the longitudinal
pivotally mounted in said second housing for
axis of the drum and sleeves, each of said rollers
movement about axes transverse to the line of
having a shaft angularly disposed to adjacent
motion of a tube through said sleeves, one arm
rollers and each‘ of said rollers having a periph
of each of said levers extending toward both the
eral portion positioned adjacent said longitudinal
discharge end of said sleeve and the longitudinal
axis to engage a tube passing therealong, bevel
axis of ‘the sleeves and tube passing there
gearing secured to said shafts and interconnect
through, gripping rollers mounted at the ends of
ing the rollers for concurrent rotation, apower
each of said arms, means urging said arms and
gear connected to one of said shafts, a: driven
the rollers carried thereby into gripping engage
ment with a tube passing through the housings, 30 gear train, said driven gear train including a ter
minal gear meshing with said power gear to ro
whereby upon rotation of the housings the tube
will be rotated about its own axis as it moves
endwise, and ?n stock applying means located
adjacent said gripping rollers to supply said ?n
to the tube before said tube is torsionally dis
torted.
10. In a machine for winding ?n stock in rib
bon form spirally on the periphery of a tube, a‘
tate the same and thereby the rollers, and a
second gear train connected to said ?rst named
driven gear train and to one of said sleeves to
effect the simultaneous rotation of said sleeves
and said drum.
13. In a machine for winding ?n stock in rib
bon form spirally on the periphery of a tube, a
rotatable housing provided with‘ concentric
machine frame provided with spaced pedestal
sleeves through which a tube may pass, means in
bearings, a rotatably mounted drum housing
provided with concentric sleeves mounted on
,said bearings, a ?xed housing adjacent said drum
housing and encircling one of said sleeves, a
power input gear train mounted on said frame
said housing for advancing a tube lengthwise
through said sleeves from an entrance end to a
discharge end, a second housing mounted on and
rotatable with one of said sleeves adjacent the
discharge end thereof, pivot pins mounted in said
and in said ?xed housing, a gear on one of the
second housing with their axes transverse of the
line of movement of the tube, bell crank levers,
sleeves meshing with the terminal gear of said
train, a second power input train connected to
said ?rst named train and including a terminal
gear rotatably mounted on the said gear-receiv
mounted on said pins, one arm of each of said le
vers extending generally parallel to said line of
movement and the other arm of each of said le 50 ing sleeve, tube advancing rollers mounted in
said drum housing and adapted to engage a tube
vers extending toward the discharge end of said
second housing and the longitudinal axis of said i to advance the same through said sleeves and
drum, and gearing connecting said rollers to said
tube, rollers mounted on said last named arms
rotatable terminal gear, said gear trains includ
for engagement with the tube, and resilient
ing idlers whereby the relative rates of rotation
means interposed between the sleeve, and the ?rst
and advance may be varied by changes of gears
named arms to urge said rollers into gripping
and said rates are ?xed with respect to each
engagement with the tube.
V
other when said trains are complete.
11. In a machine for winding ?n stock in rib
bon form spirally on the periphery of a tube, a
JOSEPH D. ‘LEAR.
rotatable drum housing having concentric
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