close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2141856

код для вставки
Dec. 27, 1938.
E., H. FABRICE‘.
METHOD OF MAKING RECEP‘IQ‘ACLE SEALING CAPS
Filed March 26, 1936
2,141,856
124,141,856
Patented Dec. 27, 1938
UNITED STATES PATENT OFFICE
2,141,856
METHOD OF MAKING RECEPTACLE SEAL
ING CAPS
Edward H. Fabrice, Chicago, 111., assignor to
Guardian Safety Seal Company, Chicago, 111.,
a corporation of Illinois
Application March 26, 1936, Serial No. 70,959
2 Claims.
This invention relates to the type of bottle
or receptacle sealing cap which is composed of
a resilient sheet metal as opposed to foil or other
pliable non-resilient metals or materials and re
5 lates more particularly to the type of sealing cap
which is severable into two or more parts in order
to effect release thereof from the receptacle
mouth to unseal the receptacle. Such cap is dis
closed and claimed in my copending application
10 #70,958, now Patent #2,113,176.
'
The main object of the present invention is to
provide a simple and efficient method of produc
ing a sealing cap of the severable type composed
of resilient sheet metal wherein the terminal
15 skirt portion of the cap is of skeleton formation
and is pre-formed to telescopically receive and
engage a non-cylindrical formation on the bottle
neck for the purpose of holding the cap against
rotation relatively to the bottle, and wherein said
20 terminal skirt portion is severable between its
ends and is also severable from the body of the
cap.
The sealing cap to which the invention relates
is illustrated in the accompanying drawing,
25 wherein:
Fig. 1 is a perspective view, partly broken
away, of a cap to be produced by the method
of this invention, showing the same in the con
dition in which it is produced following primary
30 and secondary operations in the production of the
completed article.
Fig. 2 is a perspective view similar to Fig. 1
showing the cap in the condition in which it is
applied to the neck of the bottle or other recep
tacle upon which it is adapted to be mounted.
Fig. 3 is a perspective view of the upper end
portion of a bottle equipped with a threaded neck
and with a protruding non-cylindrical formation
at the base of the neck for engagement with the
aforesaid skeleton formation of the sealing cap.
Fig. 4 is a plan sectional view of the cap taken
on a plane substantially midway between the
upper and lower wallsv of the arcuate slots in the
lower end portion of the cap and immediately
45 above the skeleton cylindrical lower end portion
of the cap of Fig. 1.
Fig. 5 is a view similar to Fig. 4 showing the
skeleton end portion of the cap shaped to re
ceive telescopically the formation on the bottle
50 neck which it is adapted to engage.
Fig. 6 is a view similar to Fig. 5 showing a dif
ferent shape of skeleton band at the base of the
cap for engagement with a similar formation of a
bottle neck and wherein the said skeleton band
55 is expanded at two diametrically opposite points.
(01. 113-121)
Fig. 7 is a fragmentary detail vertical sectional
view showing a weakened connection between two
parts of the sealing cap.
In the manufacture of caps in accordance with
the method of this invention, the ?rst operation
consists in producing a substantially cylindrical
cap I which is closed at one end by means of con
ventional sheet metal drawing operations.
rl‘he
said cap is then provided with a series of slots
2 extending circumferentially of the cylindrical 10
wall of the cap, which are equally spaced from the
extremity 3 of said cap and which are also, pref
erably spaced equally apart from each other.
Thus a skeleton band is formed on the skirt
portion 4 of the cap, which lies between the 15
terminal edge 3 and the slots 2 and remains in
tegrally connected with the cap l by a plurality
of fragile connecting members 5.
Simultaneously with, or following the cutting
of the said slots 2, the said connecting members 20
5 are partly sheared from the skeleton band 4 by
shear cutting and by pressing the lower end por
tions of the latter inwardly a distance equal to
about half the thickness of the metal so as to cut
substantially half way through said metal. This
weakens the connections between the band 4 and
the members 5 to a Very appreciable extent, which
permits the said band to be readily completely
severed from said members 5.
Following the foregoing operations, the por 30
tions 4 of the band which are coincident arou
ately with the lengths of the slots 2 are expanded
to project outwardly from the body of the cap l
and are shaped at the same time to render the
whole of said band in form and shaping it to
correspond in contour and size with the formation
6 at the base of the threaded neck of the bottle 1
shown in Fig. 3. The expansion of the arcuate
free portions of the skeleton band is effected
by subjecting the same to the action of rolls 40
or dies which effect a stretching of the metal
and reshaping thereof.
In the instance illustrated, the said formation 6
is substantially quadrangular and presents four
protruding and substantially arcuate corner por 45
tions which project outwardly of the body portion
of the cap.
Following expansion and shaping of the band 4
as above described, the latter is weakened in a
manner substantially similar to the partial shear
ing away of the connecting members 5 from a
point in the upper free edge of the band 4 sub
stantially one-half of an ogee curve to the point
8 substantially midway between the upper and
lower edges of said band 4 and from this point
2
2,141,856
on through the balance of said ogee curve, an
slots may be more slits or severance cuts.
incision 9 passes entirely through the said band
4 thus providing a free tongue M which is
digitally engag'eable for purposes of effecting
severance of the band 4 throughout said ogee
that the weakening of the connecting portions 5
alternating with the slots 2 may be weakened
simultaneously with the cutting of said slots or
curve.
As a result of the foregoing steps, a sealing
cap is provided which is equipped with a sub
stantially cylindrical body portion and a skele
10 ton band portion projecting outwardly from the
body portion at a plurality of points which are
free from the body of the cap and constitute a
pie-formed formation for engagement telescopi
cally with a similarly shaped formation of the
15 bottle neck.
The cap, when in this condition, is mounted
upon the bottle neck and is held against rotation
relatively to the bottle by the telescopic inter
engagement of the band 4 and the formation 6
20 of the bottle neck. While the cap is held ?rmly
pressed down upon the bottle neck in sealing
position, the body of the cap is t readed by em
ploying the threads of the bottle neck as a
mandrel for cooperation with suitable dies or
tools by means of which the threads are formed
in the body of. said cap.
In Fig. 6, there is illustrated another form of
construction, wherein the skeleton band II is
expanded along two diametrically opposed free
l2 thereof,v which project outwardly
30 portions
from the body of the cap and wherein said band
I! remains connected with the body of the cap
by means of two connecting members 43, which
will be substantially identical with any pair of
diametrically opposed connecting members 5 of
Figs. 1 to 5 inclusive.
As in the case of the ?rst described cap, the
band II will be equipped with the weakening
formation 8 and incision 9 illustrated in Fig. 3,
40
and the operations of mounting, threading and
severing and removing the band H will be iden
tical with those of the structure shown in Figs.
1. to 5 inclusive.
It will be understood, of course, that the sev
eral shapes of the skeleton band shown in Figs.
45
1 to 5 inclusive and Fig. 6 are merely exemplary
of a number of. different shapes or skeleton bands
that may be adopted without departure from the
invention.
While the slots 2 are shown herein as being of
50 appreciable width vertically oi the cap, prior to
expansion of the free portions of the terminal
band, it will be understood, of course, that said
slits.
Also,
-
I claim as my invention:
1. The herein described method of making
sheet metal sealing caps for receptacles which
consists in ?rst producing a cap structure pre
senting a substantially cylindrical skirt portion, 10
then cutting a series of slots in said skirt por
tion between the ends thereof and extending cir
cumferentially thereof in a plane disposed per
pendicularly to the axis of said skirt portion
whereby to partially separate the lower from the
upper skirt portion, expanding and distorting the
portions of the said lower skirt portion disposed
below said slots torender said lower end portion
non-cylindrical in horizontal section and cause
the same to de?ne a larger area than is de?ned
by the upper skirt portion, partially severing the
unbroken portions of said skirt lying between said
slots and partially severing said lower skirt por
tion at a point below one of said slots and from
its upper to its lower end, to render the latter
digitally severable at said last~named point and
for weakening said unbroken portions to enable
the latter to be digitally severed following sever
ance of said lower skirt portion for detaching the
latter from said upper skirt portion.
30
2. The hereindescribed method of making
sheet metal sealing caps for receptacles which
consists in first producing a cap structure pre
senting a substantially cylindrical skirt portion,
then cutting a series of slots in said skirt portion
between the ends thereof and extending circum
ferentially thereof in a plane disposed perpen
dicularly to the axis of said skirt portion, where
by to partially separate the lower from the upper
skirt portion and leaving relatively narrow, weak 40
and easily fracturable portions between the con
tiguous slots for maintaining the upper and low
er skirt portions integrally connected with each
other, expanding and distorting the portions of
the said lower skirt portion disposed below said
slots to render said lower end portion non-cylin
drical in horizontal section and cause the same
to de?ne a larger area than is de?ned by the
upper skirt portion, and partially severing said
lower skirt portion at a point below one of said 50
slots and from its upper to its lower end to render
the latter digitally severable.
EDWARD H. FABRICE.
Документ
Категория
Без категории
Просмотров
0
Размер файла
323 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа