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Патент USA US2112720

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March ‘29, 1938.
C. STOCKSTROM
2,112,720‘
TUBE FORMING MACHINE
Filed Nov. 4, 1935
4 Sheets-Sheet l
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ATTOB/YE Y
March 29, 1938.
c. STOCKSTROM
2,112,720
TUBE FORMING MACHINE
Filed Nov. 4, 1935
4 Sheets-Sheet 2
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ATTOB/YE'Y
March 29, 1938. '
2,112,720
c. STOCKSTROM
TUBE FORMING MACHINE
4 Shéets-Sheej; 3
Filed NOV. 4, ‘1935
MN
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BY
March 29, 1938.
2,112,720
c. STOCKSTROM
TUBE FORMING MACHINE
Filed Nov. 4, 1955
4 Sheets-Sheet 4
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_Patented
29,1938‘
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UNITED, STATES PATENT orrica ‘
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Application ram 4,(
This invention relates generally to tube-forming machines, and more specifically to an improved machine for forming tubes made from
?exible materials, such, for instance, as paper,
5 cellulose tissue, celluloid, fabric, rubber, etc.,
the predominant object of the invention being
' to provide ‘an improved machine of this type
which includes adjustable means, which may
' be adjusted even while the machine is running
10 if this be necessary, so as to regulate the width
of tubing formed by the. machine.
'
No. 48,088
Fig. 5 is an enlarged cross-section taken on
line 5-5 of Fig. 3.
Fig. 6 is a sectional elevation of the glue-ap
plying mechanism of the machine.
'
Fig. 7 is a rear elevation of the mechanism 5
shown in Fig. 6.
,
_
Fig. 8 is a fragmentary section taken on line
H of Fig. 6.
Fig. 9 is an enlarged, fragmentary view, partly
in section and partly in elevation, of the braking 10
means for controlling rotation of the roll of paper
All of the previously known tube-forming machines with which I am familiar included each a
number of sets of tube-forming elements, which
15 had to be maintained on hand for producing
tubing of various widths with the aid of the ma-
or other material from which the sheet of ‘mated
rial is drawn to produce the tubing, and of the
mil shaft adjusting means.
Fig. 10 is a section taken on vline ‘IO-40 of i6
' Fig. 9.
.
~
chine. In other words, if tubing of a certain
Fig. 11 is an enlarged, fragmentary sectional
widthvwas to be produced on one of these pre- plan taken on line li-ll of Fig. 3.
viously known tube~forming machines, a certainFig. 12 is a fragmentary, sectional view illus
set of forming elements would be associated with trating Part Of the machine When the same is 20
the machine, and when it was desired to produce arranged for Producing square 0!‘ rectangular
tubing of a different width the set of forming
elements previously used would have to be re-
moved from the machine, and another set of
25 forming elements adapted to produce tubing of
the desired width would have to be associated
with the machine.
»
'
‘The invention disclosed herein eliminates the
need for a number of sets of forming elements
type tubing.
'
.
_
Fig’. 13 is a section taken on line l3—-l3 of Fig.
12 and looking in the direction indicated by the
arrow.
A
a
Fig. 14isafragmentary rear elevation of aper
tion ofthe structure ‘shown in Fig. 12.
I Fig. 15 is an enlarged cross section taken on
line l5--i5 of Fig. 12.
30 for producing tubing of various widths, this deIn the drawings, wherein are shown for the 30 ~
sirable end being attained by providing the im- ' purposeof illustration, merely, two forms of the
proved machine with forming elements which are
permanently associated with the machine, and
invention, A designates the improved machine
generally. The maehineAincludes a rectangular
which are adjustable so as to provide for pro- . frame 01' bed. which is made up 01' longitudinally
3.3 ducing tubing of different widths even while the extended channel elements i and transversely 36
machine is running, if this be required.
Thus
extended channel elements 2; these longitudi
in the use of'the improved machine there is no
nally and transversely extended elements being
necessity to perform the time-consuming tasks
of replacing the forming elements every time it
suitably secured together to provide a rigid frame
01' bed structure- The longitudinally extended
elements I and 2 are supported by suitable legs 40
4c is desired to change the width of the tubing
being formed, but instead it is merely necessary
for the operator of the machine to rotate a hand
wheel, in a manner to be hereinafter explained,
_ to change the adj?stment of the forming "ele_
4" ments in order to produce tubing of the desired
width;
.
,
l
Fig' 1 1s a‘ side elevation of the improved ma
chine
-
_
to “1132288 a‘ plan View of ‘the machine illustrated
3- sllpperted by and extended upwardly from
the frame 01' bed of the machine is a super?'ame
structure 4 made “P °f vertically disposed angle
bars 5, secured adJacent to their‘ lower ends to
the bed of the machine’ and horizontally at‘ ‘5
ranged bars 6,6’, and '| ?xed to the vertical bars
adjacent to the tops thereof and extended lon
gitudinally and transversely of the machine.
Fixedto the opposed longitudinally
extended
elements I of the frame or bed of the machine A 50
" is a pair of bearings 8 (Figs. 1, 2,.and 3) which
Fig 3 is an enlarged longitudinal section taken support a shaft 9 that; is extended transversely
on line 3—3 0f Fig- 2of the machine. The shaft 9 supports a roll Ill
Fig. 4 is a cross section taken on line H o! of paper or other material from which a sheet
55 Fig. 3.
‘ of material S is drawn, said sheet of material 55
2
9,119,790
being passed through the tube-forming parts of
because the screw-threads'of said adjusting screw
the machine in a manner to be hereinafter de
are in engaging relation with respect to the screw
scribed to produce tubing. The roll of material
threads within the opening 23’ formed through
the extension 23 of the element 22”, the shaft will
be moved as desired. Also the clamping device 22
I0 is wound about a hollow core ii (Fig. 2)
6 rthrough which the shaft 9 passes, said shaft
having ?xed thereon tapered elements l2 which
are driven into the opposite ends of the core so
serves as a braking device for the shaft 9, as by
tightening the elements 22IL and 22” against the
as to frictionally engage same, after which said
shaft, with the aid of wing nut 21, rotation of said
elements l2 are secured to the shaft 9 through
shaft may be retarded in proportion to the'pres
sure exerted against the shaft by the elements 10
' the instrumentality of the set screws i2’.
Thus
the roll of material It) is ?xed to the shaft 9 for
rotation therewith, the shaft rotating in the bear
ings 3 as the sheet of material S is drawn from
said roll during operation of the machine. The
15 sheet'of material S passes about guide rollers l3
and I4, as shown to the best advantage in Fig.
3, the guide roller l3 being supported by the op
posed longitudinally extended elements -I and
the guide roller 14 being supported by horizon
tally disposed elements I! extended from the
rearmost vertical elements 5 of the superframe
structure of the machine to elements 32.
In order to provide for shifting the shaft 3
longitudinally of its major axis so that the roll
25 of material l9 may be moved transversely of the
machine to properly position said roll of material,
the machine includes an adjusting screw l8 (Figs.
9 and 10). This adjusting screw is supported by
a bracket I‘! which is secured at H’ to one of the
30 longitudinally extending elements I of the bed ‘of
I the machine (Fig. 2), and has an outer portion
I1‘ in which an aperture is formed through which
the adjusting screw it passes. Adjacent to this
outer portion I'll of the bracket a collar i3 is
.5 ?xedly mounted on the adjusting screw i6, and at
the extreme outer end of said adjusting screw 9.
hand wheel 19 is ?xed thereto. The hub of the
hand “wheel l9 and the collar I8 contact with
opposite faces of the .v outer portion ll‘ of the
40 bracket I], so that said adjusting screw is pre
vented from moving longitudinally, and also the
inner end of the adjusting screw is provided with
a smooth faced, reduced end portion it’ that ex
tends into an aperture 29 formed in the longitudi
nally extended element i that supports the bracket
l‘l, whereby said adjusting screw is supported for
rotary movement by said longitudinally extended
22'l and 221‘.
Located adjacent to the guide ,roller I4 is an
elongated glue receptacle which extends trans
versely of the machine, as shown in Figs. 1, 2, 3, 6,
and 7. The glue receptacle 29 is supported for
limited sliding movement on a pair of spaced '
angle elements 30, said angle elements being sup
ported at their opposite ends by elements 3|,
which are ?xed at their forward ends to the rear
most vertical elements I of the superframe struc 20
ture of the machine and at their rearmost ends by
members 32 which are fixed to the’ elements 9 and
to the longitudinally extended elements I of the
bed of the machine. The glue receptacle 29 is
capable of being moved transversely of the ma
chine through the operation of an adjusting rod
33 which is provided with an enlarged, screw
threaded portion 33'. This adjusting rod is sup—
ported for rotation by the opposed elements 3 l , as
shown in Fig. 7, said rod being provided with a
hand wheel 34 for operating same, and the glue
receptacle having a downwardly extended ele
ment 35 which screw-'threadedly engages the
screw-threaded portion 33' of the rod 33. By
rotating the adjusting rod 33 the glue receptacle
may be moved transversely of the machine to de
sired locations.
Secured to the glue receptacle 29 at opposite
ends thereof are upstanding elements 35'~which
support at their upper ends a horizontally dis 40
posed angle element 36. The angle element 36
has ?xed thereto by means of a set screw 31 a
hinge member 38, to which a downwardly extend
ed element 39 is hinged at 40. The element 39 is
substantially L-shaped when viewed as illustrated
in Fig. 6, inasmuch as said element includes an
extension 39' which is extended at‘ an approxi
element l and the outer portion ll3 of the bracket
I‘I.
Fixedly mounted on the shaft 9 at a point above
50
the adjusting screw I6 is a pair of spaced collars
2|, and mounted on said shaft in a position be
tween said collars is a clamping device 22. The
clamping device 22 is comprised of an element 22‘
mate right angle with respect to the main body
portion of said element. The element 39 is pro
with complementary curved seats which contact
with the shaft 9. Also the element 22b is provided
with the sheet of material S as said sheet passes
vided with a boss 4i which supports a pin 4|’ on
which aglue-distributing disk 42 is mounted for
rotation, the lower portion of the disk 42 being 10
cated within the glue receptacle, so that it passes, ,
through glue therein during rotation of the 'disk.
and an element 22!’, said elements being provided . Also, the peripheral edge of the disk 42 contacts.
- with an extension23 to which a bolt 24 is hingedly
attached at 25, and the element 22‘ is provided
60 with a wing 26 having an open-end slot that re
ceives thebolt 24. The bolt 24 has mounted
thereon a wing nut 21 which is adapted to be
screwed against the wing 26 of the element 22*‘
in order to move said element 22* and 22'’ into
65 clamping engagement with theshaft 9. The ele
ment 22b of the clamping device 22 is provided
with a downwardly projected extension 28 which
is provided with a screw-threaded opening 23’
formed therethrough, through which the adjust
70 ing screw l9 extends.
When, in the use of the machine, it is desired
' to shift the shaft 9 longitudinally of its major
axis so as to properly position the roll of material
I! transversely of the machine, the hand wheel
75 is is rotated to rotate the adjusting screw 16, and
about the guide roller l4 (Fig. 3), whereby said
disk is frictionally rotated by the moving sheet.
The disk 42 has associated with it a glue scraper
43 which is so shaped as to embrace an edge por 60
tion of the disk, as shown to the best advantage in
Fig. 8. The glue scraper includes a portion’44
which is slidabiy mounted on the portion 33' of
the element 39, said portion 44 being formed
about said portion 39' in embracing relation with
respect thereto.
The portion 44 of the glue
scraper is .providedqvith an outwardly extended
lug 45 having a screw-threaded opening formed
therethrough, which receives a. screw-threaded
portion of a rod 49, said rod being supported for
rotary movement by a bracket‘46' and having a
weight 41 mounted thereon which is adjustable
to different positions on the rod and is ?xed in
positions to which it is adjusted by a wing nut
41', The weight 41 through the action of gravity 75
2,119,790
moves the peripheral face of the disk 42 into close
contact with the sheet of material S,'and by ro
tating the rod 46 the scraping edge 43' of the glue
scraper may be moved toward and from the
peripheral edge of the disk so as to regulate the
amount of glue applied to the sheet S by the disk
42.-
.
The illustrated embodiment of the improved
machine includes a glue reservoir in the form of
10 an inverted bottle 48 which is supported by a
3
tudinally extended elements of the superframe 7
structure 4 of the machine, and said rod extends
through apertures formed'through the upper por
tions of elements 56 which are secured to the
heads 50 and extend upwardly therefrom. The
elements 56 have associated therewith bracket
elements 51 which are secured to the elements 56
at the points designated by the reference charac
ter 58. The elements, 51 are inclined outwardly
and downwardly, as shown in Fig. 4, and at the
19.
suitablesupporting structure 48'. Leading from _ lower ends thereof vertically disposed portions51'
the inverted bottle 48 is a glue conductor 48b are provided through which openings are'formed,
whose discharge'end is located within the glue the rod 5|’ being passed through said openings.
receptacle 29 (Fig. 3), said conductor being pro
It is obvious that the heads 50 are adequately
supported for free movement transversely of the 15
15 vided with a valve 480 which is adapted to con
trol ?ow of glue from the inverted bottle 48 to ‘ machine by the rods 5|, 5|’, and 55, the bracket
the glue receptacle 29. In order to provide suili
elements 51 assisting in maintaining said heads
'
_
cient air pressure within the upper portion of in their proper positions.
The means for adjusting the heads transversely
the inverted ‘bottle 48 to cause the glue to flow
20 therefrom through the conductor 49”, an air pipe of themachine comprises a rod 59 which is sup 20
49 is employed (Fig. 2), this air pipe leading from ported iorrotation by oppositely disposed angle
26
a suitable source (not shown)‘ of air under slight
pressure to the upper portion of the inverted
elements 60 (Fig. 4) . The adjusting rod 59 is pro
bottle, as, shown to the best advantage in Fig. 3.
tate rotation of same, and said rod includes an
Supported by the superframe structure of the
enlarged intermediate portion 59' which is pro
vided with right and left screw-threads desig
nated, respectively, by the reference characters
machine is a pair of heads 50 which are mounted
for sliding movement on a pair of rods 5| and 5|’
which extend transversely, of the machine, as
shown to the best advantage in Figs. 2 and 3.
30 The rods 5| and 5|’ are mounted in supporting
elements 5|a (Fig. 2) formed on or ?xed to the
opposed side elements of the superframe struc
ture 4, and also these rods pass through openings
videdat one end with a hand wheel 6| to facili- '
598 and 59". The intermediate portion 59’ of the
adjusting rod 59 passes through screw-threaded
openings formed through the heads 59, the part
of said intermediate portion provided with right
hand screw-threads being extended through the‘
screw-threaded opening of one of the heads, and
located adjacent to the lower ends of vertically 'the part of said intermediate portion provided
35 disposed elements 52, which are secured at their with left-hand screw-threads being extended,
upper ends to the element 6' that extends lon
gitudinally of the superframe structure 4 at the
approximate transverse center of the machine
(see Fig. 2). The heads 59 are relieved or cut
40 away as indicated at 53 in Figs. 2 and 3 to pro
vide cavities in which the lower portions of the
elements 52 are received when the ‘heads are
brought together at the center of the machine.
The heads 50 are shaped as shown to the best ad
vantage in Figs. 2, 3, and 4; that is to say, each
of said heads includes a portion 50" which extends‘
longitudinally of _ the machine which'is‘provided
with openings formed transversely therethrough
through which the rods 5| pass, and at the rear
through the screw-threaded opening of the other
head. Obviously, rotation of the adjusting rod
59 will cause the heads 59 to move toward .or
from each other, depending on the direction of
rotation of the adjusting rod, and because the 40
tube-forming elements 54 are carried by the
heads, like movement will be imparted to said
tube-forming elements.
At the forward portion of the machine A a plate
62 is provided, which is supported by the opposed, 45
longitudinally extended elements I, and at oppo
site sides of this plate slotted elements 6.3 are
?xed thereto which extend longitudinally of the
forward portion of the machine. Thehslotted ele
end of said longitudinally extended portion 5|!a _ ments are secured adjacent to their opposite ends 50
each head includes a downwardly extended por
to the plate 62 by means of fastening devices 63',
tion 5|)b provided at its lower end with a down
said slotted elements being raised slightly above
wardly and rearwardly inclined portion 59°.
,
the top face of the plate 62, as shown in Fig. 4,
~Fixed to the heads 59 are elongated tube
by suitable spacing members. Slidably secured to
iorming elements 54 which are in the general
form of narrow, elongated plates that extend in
substantial parallelism forwardly of the machine.
The forward portion of the forming elements are
substantially horizontal, or parallel with respect
60 to the bed of the machine, and adjacent to their
rearmost ends said forming elements include up
wardly inclined portions 54“, as shown to the
best advantage in Fig. 3. From the rear ends of
the upwardly inclined portions 54‘l of the form
ing elements forwardly projected portions 54b are
extended, which at their forward ends are turned
upwardly as indicated at 54° in Fig. 3. ‘The form
ing elements are secured to the heads 50 at their
portions 54“, and said forming elements contact
with and are ?xed to the inclined lower faces of
the angular portions 50¢ of said heads.
In order to assist in supporting the heads 59
for movement'transversely of the machine, a rod
55 is provided. This rod, as shown in Fig. 4, is
75 supported at its opposite ends by opposed, longi
the slotted elements 63 are tube-forming mem
bers 64, the connections between said tube-form
ing members and said slotted elements being pro
duced by bolts 55 whichpass. through the slots
of said‘slotted elements and through apertures
formed through the tube-forming members,‘ as 60
illustrated in Fig. 4. Obviously the end portions
of the tube-forming members 64 may be moved
‘longitudinally of the slotted elements 63 to de
sired positions, in which positions said members
64 maybe secured by tightening the bolts 65.
As shown to the best advantage in Fig. 11, the
inner end portions of the tube-forming members
64 overlie the tube-forming elements 54, and said
inner end portions of said tube-forming members I
'64 are maintained at their proper elevation by '
adjusting screws 65, which pass through screw
threaded openings formed through the tube
forming'members and contact with and rest upon
the top face of the plate 62. In order to main
4
2,112,790 '
tain the adjustment of the adjusting screws 66,
each thereof is provided with a lock nut 68'.‘
The improved machine includes guide pins 81
which under certain circumstances may be em
ployed to aid in guiding the sheet of material into‘
proper relation with respect to the tube-forming
elements and members. Each of these-pins is
supported by a head 68 which is mounted for
sliding movement on a pair of rods 60 which ex
10 tend transversely of the machine and are sup
ported by the longitudinally extended elements I.
The head 6. of each guide pin ‘1 is provided with
a downwardly extended portion 10, which is pro
vided with a screw-threaded-opening formed
other. The forward end of the tubing is then
drawn outwardly by hand to a suitable power
driven reel (not shown) with which the forward
end portion of the tubing is associated, so that
the tubing will be wound thereon when the reel
is rotated._ The reel is then placed in opera
tion, and the sheet 8 is drawn by ‘said reel from
the roll "I and is formed by the tube-forming
elements 54 and the tube-forming members 64,
and is then wound upon the reel. As already 10
stated herein, the disk 42 applies a line of glue to
the sheet 8, and because the glue receptacle
which supports said disk may be adjusted trans
versely of the machine by the adjusting rod
therethrough, and an adjusting rod ‘ll having 3!, the disk may be adjusted to apply glue to 15
right-hand screw-threads 'H‘ and left-hand_ any desired location on the sheet 8. Also, as
screw-threads ‘l I" is extended through the screw
shown in Fig. 2, the angle element 36 is provided
threaded openings formed through the portions with a plurality of the hinge members 38, and
10, the right-hand screw-threads being extended the disk and its associated parts may be shifted‘
through the portion ‘I. of one head “and the from one thereof to anotherv to obtain different 20
left-hand screw-threads being extended through positioning of the disk, or if desired in producing
the portion 10 of the other head 68. The- ad - certain types of tubing, more than one glue
lusting rod ‘H is supported for rotation by the applying disk may be employed.
opposed, longitudinally extended elements I, and
It will be noted that the machine shown in
said adjusting rod is provided at one end with a Fig.1 includes a shaft 10 which corresponds with
'hand wheel ‘I! which facilitates rotation of the the shaft 9 already referred to herein. This
adjusting rod. It is apparent that when the ad
shaft ‘16 has associated with' it the same parts
, justing rod 1| is rotated the right and left-hand
and elements described in connection with the
screw-threads thereof cause the guide pins to
move toward or from each other, depending on
the direction of rotation of said adjusting rod.
Outward movement of the heads 68 with respect
shaft 8, and said shaft 18 is intended to support
a second roll of material when tubing to be pro
duced is of multi-wall or two-piece structure.
When a second roll of material is used in pro
to each other is limited by a bar 68‘ which is .
ducing tubing, the sheet drawn therefrom\may
?xed to one of the heads and is provided with a
pass over the .guide roller 11 and then move
longitudinally extended slot through which a pin
ill’ carried by the other head extends (Figs. 2
and 11). When the end 88° contacts with the
pin 68!‘, further continued movement of the heads
over“ roller ll with the sheet-of material S drawn 35
from the roll l0 into tube-forming relation with
‘I is prevented. '
At the forward end of the machine a presser
element 13 is provided which contacts with the
top of the tubing as it moves from the ma
chine. This presser element ‘I8 is of elongated,
tubular formation as, shown in Figs. 1, 2, and 3,
and it is attached to an arm .14 which is provided
respect to the tube-forming elements 54 and the‘
tube-forming members 84.
In Figs. 12, 13, 14, and 15a structure is illus
trated which is employed in producing tubing of 40
the square or rectangular type. _In producing
such tubing an extra pair of tubing-forming ele
ments 8! is employed. ‘These forming elements
80 include narrow, elongated ‘plate portions ex
tending longitudinally of the forward portion of
at its upper end with a slot 14'. The ‘arm 14 the machine at points slightly above the narrow,
is secured to the longitudinally extended ele-‘ elongated plate portions of the tube-forming
ment 6' of the superframe structure by a suit
able fastening device 15 which passes through
50 the slot 14' and is screwed into a screw-threaded
elements 54, as shown in Figs. 12 and 15. The
tube-forming elements ll are supported by rods ‘
II, which are extended through openings formed
aperture formed in said element 6'. Because of - through portions of the heads II, said rods hav
the slot ‘II’ the arm 14 may be secured to the ing downturned portions ll’ (Fig. 12), thelower
element-6' in various positions so as to posi
tion the presser element in diil'erent locations
65 longitudinally of ‘the extreme forward portion of
the machine.
when the machine A is to be placed in opera
tion, the sheet of material 8 is drawn through the
machine by hand and the forward portion of the
sheet is moved under the elongated tube-form
ing elements 54, the opposite side portions 5‘ of
said sheet then being drawn upwardly ‘about the
opposite outer side edges of the tube-forming
elements 54 and folded inwardly so'that their
inner edge portions are in overlapping relation,
as shown at S” in Figs. 5 and 11. The tube
forming members 64 are then positioned as
shown in Fig. 11, where they contact with the top
faces of the inwardly turned' portions of the
ends of which are inclined rearwardly and down
wardly. The tube-forming elements ll are ‘se
cured to the downturned portions of the rods 8|,
and upwardly and rearwardly inclined portions
of ,said elements contact with the lower faces of
the. downwardly and rearwardly inclined lower
portions of said rods. Each head 50 is provided
with a clamping screw 02 for clamping the as
sociated rod 8| ?xedly in position with respect
thereto. Also, each rod II has clamped there
to a member 83 (17185.12 and 14) which is pro- .
vided with a portion 83’ that overlaps a side face
of the associated head, and each portion 83'
supports an adjusting screw u that contacts
with the adjacent side face of the associated head
Bl. The members 83 are each provided with'a
slit 8!" to provide portions which clamp the as
70 sheet of material S. The sheet of material S _ sociated rod 8|, and these clamping portions are 70
which is so drawn through the machine by hand drawn into clamping contact with the rod by a
has had a line of glue applied to it by the disk screw ll“.
'
'
‘ 42, and this’ line of glue, which is located be
In order to produce accurately formed square
tween the overlapped edge portions of the sheet,
76 causes said sheet portions to adhere 'to each
or rectangular type tubing the forming elements
80 must be precisely positioned with respect to 75
5
2,112,720‘
‘the forming elements 54, and such fine adjust
84 are maintained in close contact with the heads
of heads, means for supporting said heads for
adjustment transversely of the machine, a pair
of vertically spaced tube-forming elements car
ried by eachoi said heads, means ioradjusting
one tube-‘forming element of each pair of tube
iorming elements with respect to the associated
tube-forming element, means for locking the
' 58 by contact of the paper with the tube-forming
adjustable tube-forming elements in adjusted
elements 88, hence rotation of the adjusting
10 screws in either direction produces rotary move
positions, screw-threadedmeans for moving said
heads and said tube-forming elements trans
ment may be obtained by manipulating the ad
iusting screws 84 infcontact with the heads 50
so as to rotate the rods 8| and thereby move
the tube-forming elements 88 'to the desired posi
tions. The inner ends of the adjusting screws
ment of the rods 8| in one or the other direc
tion. When the rods 8| have been adjusted to
desired positions they may be clamped in such
positions by the screws 82.
>
In producing square or rectangular type tubing
plates 84 are employed whose inner edge por
tions are interposed between the narrow, elon
gated plate portions of the tube-forming ele
ments 54 and 88, as shown in Fig. 15. These
20 plates are supported by arms 85 which are at
tached to said plates at their inner ends and are
?xed at their outer ends-to the slotted elements
versely of the machine so as to provide for pro
ducing tubing of various widths, and tube-form
ing members co-operatively associated with said
tube-forming elements.
3. A tube-forming machine including a pair of 15
heads, means for supporting said heads for ad- »
justment transversely of the machine, said means
including spaced elements on which said heads
are slidingly supported, members secured to and
‘extended from said heads, and an element slid
elements carried by said heads, means for mov
68 by suitable fastening devices 85’. The pairs
ing said heads and said tube-forming elements
of the arms 85 at opposite sides of the plates 84
25 are connected together by arms 88, and also said
plates 84 are maintained at their proper eleva
tions with respect to the plate 62 of the machine‘
by means of adjusting ‘screws 81 similar to the
adjusting screws 86 associated with the tube
30 forming members 64, said adjusting screws 81 at
their lower ends contacting with and resting
upon said plate 62 and being provided with lock
transversely of the machine so as to provide for
' nuts to maintain their adjustment.
The use of the machine in producing square '
20
ingly engaged by said members, tube-forming
producing, tubing of various widths, the last
mentioned means including an element supported
for rotary motion and provided with right-hand
and'left-hand screw-threaded portions which co
operativély engage said heads and are adapted
to move same toward and from each other on 30
rotation of said screw threaded element, and
tube-forming members co-operatively associated
with said tube-forming elements.
4. A tube-forming machine including a pair of
heads, means for supporting said heads for ad
same as in producing tubing of the type illus-’ justment transversely of the machine, said means
trated in Fig. 5, the only di?'erence being that including spaced elements on which said heads
the opposite side edges of the tubing are folded are slidingly supported, members secured to and
inwardly as shown in Fig. 15 through the use of extended from said 'heads, and an element slid
40 the extra tube-forming elements 80 and the plates ingly engaged by said members, tube-forming 40
elements carried by said heads, means for mov
84.
It is obvious, in view of the foregoing descrip-4 ing said heads and said tube-forming elements
tion of the improved machine disclosed herein, transversely of the machine so as to provide for
that tubing of the type shown in Figs. 5 and 15, producing tubing of various widths, the last
mentioned means including an element supported 45
45 and of various other types which 'need not be de
scribed in detail herein, may be made in various for rotary motion and provided with right-hand -
or rectangular type tubing is substantially the
widths by merely adjusting the heads 58 trans, -' and left-hand screw-threaded portions which co
versely of the machine toward or from each other,
this being accomplished by mere rotation of the
50 hand wheel 6| shown in Figs. 1 and 4. Thus
the necessity that a number of sets of tube
forming elements for producing tubing of differ
ent widths be maintained on hand is entirely
eliminated, and the operation of producing ma
55 chine-made tubing is greatly. simpli?ed. Also,
in the use of the improved machine, if the tubing
being produced should run slightly wider or nar
rower than desired, the heads 50 may be adjusted
while the machine is operating to correct the
60 error in the tubing width.
I claim:
.
-'
'
1. A tube-forming machine including a pair of
heads, means for supporting said heads for ad
justment transversely of the machine, a pair of
65 vertically spaced tube-forming elements carried
by each of said heads, means for adjusting one
tube-forming element of each pair of tube-form- ‘
ing elements with respect to the associated tube
forming element, means for moving said heads
70 and said tube-forming elements transversely of
the machine so as to provide for producing tub
ing of various widths, and tube-forming members
co-operatively associated with said tube-forming
elements.
I
2. A tube-forming machine including a pair
operatively engage said heads and are adapted
to move same toward and fromfeach other on.
rotation of said screw threaded element, tube 50
forming members co-operatively associated with'
said tube-forming elements, and means for ad
justabiy securing said tube-forming members in
place.
.
-
5. A tube-forming machine including a pair 55
of heads, means for supporting said heads for
adjustment transversely of the machine, said
means including spaced elements on which said
heads are slidingly supported, members-secured
to and extended from said heads, and an ele~
ment slidingly engaged by said members, tube
forming elements carried by said heads, means for
moving said heads and said tube-forming ele
ments transversely of the machine so as to pro
vide for producing tubing of various widths, the 65
last-mentioned means including an element sup
ported for rotary motion and provided with right
hand and left-hand screw-threaded portions
which co-operatively engage said heads and are
adapted to move same toward and from each 70
other on rotation of said screw-threaded ele
ment, tube-forming members co-operatively as
sociated with said tube-forming elements, and
means including slotted members extended longi
4
2,112,790
tudinally oi’ the machine for adiustably secur
ing said tube-forming members in place.
6. A tube-forming machine including a pair of
heads, means for supporting said heads for ad
justment transversely of the machine, said means
including spaced elements on which said heads
are slidingly supported, members secured to and
extended from said heads, an element slidingly
engaged by said members, and brackets ?xed to
said members and arranged in sliding relation
with respect to one of said spaced elements, tube
i’orming elements carried by said heads, means
for moving said heads and said tube-forming ele
ments transversely of the machine so as to pro
15 vide for producing tubing of various widths, the
last-mentioned means including an element sup
ported for rotary motion and provided with right
hand and left-hand screw-threaded portions
which co-operatively engage said heads and are
20 adapted to move same toward and from each
other on rotation oi’ said screw-threaded element,
and tube-forming members co-operatively asso
ciated with said tube-forming elements.
7. A tube-iorming machine including a pair of
25 heads, means for supporting said heads for ad
,iustment transversely oi’ the machine, said means
including spaced elements on which said heads
‘are slidingly supported, members secured to and
extended iromsaid heads, an’ element slidingly
engaged by said members, and brackets ?xed to
said members and arranged in sliding relation
with respect to one of said spaced elements, tube
iorming elements carried by’ said heads, means
for moving said heads and said tube-forming ele
ments transversely of the machine so as to'pro
vide for producing tubing 01' various widths, the
last-mentioned means including an element sup
ported for rotary motion and provided with right- ‘
hand and left-hand screw-threaded portionswhich
co-operatively engage said heads and are adapted
to move same toward and from each other on 15
rotation of said screw-threaded element, and
tube-forming members co-operatively associated
with said tube-forming elements, said spaced ele
ments being supported at their opposite ends and
having a supporting member associated with each 20
thereof at its approximate center, said-heads be
ing provided with recesses which receive said
supporting members when the heads are drawn
inwardly to the limits of their movement.
CARL BTOCKB'IROM;
'
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