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Патент USA US2081038

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May 18, >1937.
c. J. KELLER
2,081,038
APPARATUS FOR FORMII‘IIG TUBULÍAR ARTICLES
Filed Aug. 31, 19433
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May 18, 1937.
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Patented May 18, 1937
2,081,038
UNITED STATES _PATENT OFFICE
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APPARATUS FOR FORMING' TUBULAR
~
ARTICLES
Clarence J. Keller, Anderson, Ind., assigner, by
mesne assignments, to General Motors Corpo
ration, Detroit, Mich., a corporation of Dela
Ware
Application August 31, 1933, Serial No. 687,621
89 Claims. (Cl. 29-33)
vide for the forming of tubular articles through
the cooperation between the two feed rolls and
is taken on the line Sia-9a. of Fig. 9.
Fig. 10 is a side elevation ofthe feeding device
and its operating parts, 'viewed in the direction of
arrow I0 in Fig. 9.
Fig. 11 isa sectional> view of cooperating mem
progressive stages from a continuous strip of
bers, carried by the lower and upper die plates,
sheet material in an expeditious manner and
and is taken along the line Il--H of Fig. 6.
Fig.. 12 is a view similar to Fig. 11, showing,
however, the upper die plates and parts carried
'I‘his invention relates to the manufacture of
tubular articles and more particularly to an ap
paratus for forming tubular articles from a con
tinuous strip of sheet material.
5
It is an object of the present invention to pro
with the least possible amount of scrap material.
10
Another object of the present invention is to
provide for knurling a portion of a tubular article.
Another object of the present invention is to
provide for the contraction of an end portion of a
tubular article to reduce the same.
15
thereby in a different relative position.
Figs. 13 and 14 together are a cross-sectional
view of the upper and lower die plate with the
parts carried thereby in operative position. The
section being taken on the lines |3-I 3 and Ill-M 15
Another object of the present invention is to
provide for crimping an end portion of a tubular of Figs. 6 and '7, respectively.
`
,
article into a flange extending transversely of the
Figs. 15 and 16 together form a cross-sectional
axis of the article.
view similar to Figs. 13 and 14, showing, how
Another object of the present invention is to ever, the parts carried by the upper die plate in
20 provide for the formation of raised beads in the inoperative position.
20
periphery of a tubular article.
Fig. 15a is a fragmentary perspective view of a
Still another object of the present invention is detail of the machine.
to provide for the formation of a sunken bead
Fig. 17 is a sectional view taken on the line
in the periphery of a tubular article.
l'l-Il of Fig. '7.
25
Further objects and advantages of the present
Fig. 18 is a sectional view taken on the line
invention will be apparent from the following i8-I8 of Fig. 13.
description, reference being had to the accom
Fig. 19 is a sectional view taken on the line
panying drawings wherein a preferred embodi
ISI-I9 of Fig. 6.
’
ment of one form of the present invention is ' Fig. 20 is a sectional View similar to Fig. 19,v
30 clearly shown.
showing however, lthe upper die plate in another
In the drawings:
position.
Fig. 1 illustrates progressive steps of the meth
Fig. 21 is a sectional view taken on the line
od for forming tubular >articles from a strip of
2.|-2l of Fig. 7.
sheet material.
’
Fig. 22 is a sectional view similar to Fig. 21
35
Fig. 2 is a fragmentaryperspective view of a
machine embodying the present invention.
Fig. 3 is another fragmentary perspective view
of the machine, viewed in the direction of arrow
40
3 in Fig. 2.
`
Fig. 4 is an enlarged fragmentary perspective
view of a portion of the machine looking in the
direction of the arrow 4 in Fig. 3.
Fig. 5 is another enlarged fragmentary per
45 spective view of the machine looking in the direc
tion of arrow 5 in Fig. 4.
Figs. 6 and 7 together are a plan View of the
lower die plate and the parts carried thereby.
Fig. '7a is a fragmentary sectional view taken
50 on the line 'la-_1a. of Fig. 7.
>
’
showing, however, the upper die plate in another
position.
'
Fig. 23 is a sectional view taken on the line
23-23 of Fig. 15.
'
Fig. 24 is a fragmentary sectional view show 40
ing a portion of Fig. 23 with the upper die in
operative position.
25-25
Fig. 25
of Fig.
is a 15.
sectional view tal-:en on the
Fig. 26 is a sectional view taken on the line
26--26 of Fig. 13.
Fig. 27 is an enlarged fragmentary sectional
View taken substantially on the line 21-21 of
Fig. 6, showing an article shortly before one end
thereof is crimped inwardly.
Fig. 28 is a view similar to Fig. 27, showing,
Fig. 9 discloses the feeding device and its op- ' however, the end of the article crimped inwardly.
Fig. 8 is a bottom view of the upper die plate
and parts carried thereby.
erating parts.
55
Fig. 9a is an enlarged sectional View showing
Fig. 29 is a sectional view taken on the line'
29-29 of Figs. '7 and 14.
55
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