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Патент USA US2412576

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Dec. 17, -1946.l -
Filed Sept, 22, 1945
Patented Dec. l?, 1946
Delos C. Giles, Oil City, Pa.
Application September 22, 1943, Serial No. 503,390
4 Claims. (Cl. 217-76)
This invention relates to improvements in clos
ures and methods for the production thereof.
The invention Vhas for its object the provision
of a simple and inexpensive closure for barrels
and the like, with an ideal section affording a
maximum of strength in proportion to the ma
terial used, and providing an increased thickness
Figure 8 is a view partially in side elevation and
partially in section, showing reenforcing applied
radially to any one of the heads illustrated in
Figures 4 to ’7.
Like parts are identified bythe same referenceY
characters throughout the several views.
In order to explain my invention more ade
quately I shall assume some'speciñc dimensions,
of stock at the bung hole to assure a firm an
it being understood that these` are stated merely
chorage of the bung driven therein.
More specifically, the invention contemplates 10 by Way of exempliñcation. Let it be assumed.
that it is desired to make up a conventional bar
the spiral winding about a core of a strip of pa
rel head 13 inches in diameter, and >that it is
per or the like of gradually tapering Width, start
desired that the head be 1% of an inch thick ad
ing at the end where the strip is widest, thus
jacent its bung hole and 1/2 inch thick adjacent
producing a barrel head or the like in the form
of a disk which in any diametrical section will
have its greatest thickness at the center and will
thence taper in thickness toward its margins. As
compared with any other closure, the device
herein disclosed is less expensive, less subject to
its peripheral margin.
Depending somewhat
apparatus to any desired size.
As compared with a laminated paper head, the
be equal to the sum of the respective widths of
upon the thickness of the web of paper, cloth,
cellulose acetate or other stock to be used, it may
be assumed that the strip which will wind the
completed closure to the specified dimensions
corrosion, less subject to puncture and shock, 20 may perhaps be on the order of 70() feet long.
It will be wound in a parent roll ’1, and its width,
and will more readily receive a satisfactory coat
in the preferred practice of the invention, may
ing and may readily be made on one piece of
the strip at its respective ends. In other words,
method of construction herein disclosed saves 25 the web or strip of material making up the parent
roll 'l may be 700 feet long and an inch and a
material. There is no waste in my method,
quarter in width.
whereas in laminating a paper head from disk
The strip passes between the guide rolls 8 and
stock there is a minimum of 25 per cent waste.
9 and past a slitter assembly generically desig
Moreover, the method herein disclosed is much
simpler and results in a stronger product in pro 30 nated by reference character l0, and past the
adhesive rolls Il and l2 and is wound upon a
portion to the weight. In relatively large closures
the saving in weight becomes quite signiñcant.
Other objects will be apparent to those skilled
in the art upon analysis of the following dis
closure of my invention.
In the drawing:
Figure 1 is a diagrammatic View, partially in
side elevation and partially in section, illustrat
ing the method of making a closure in accord
mandrel l5, to which it is held by pressure roll
The slitter roll assembly may be constructed
35 in any one of a number of ways.
Instead of a
shear assembly, I have shown a pinch knife slit
ter in Figure 3 purely by way of illustration. Co
operating with a hardened die roll at I1 is a ro
tary knife I 8 mounted on shaft i9 for axial move
ance with this invention.
40 ment as determined by the spool 20 on shaft. I9
and a lever 2l engaging in such spool and urged
Figure 2 is a plan view of the apparatusshown
by a cam 22 against spring 23. Mounted in fixed
in Figure 1.
bearings at either side of the knife are pressure
Figure 3 is an enlarged detail View taken in
rolls 24 and 25 holding the margins of the web
section on the line 3_3 of Figure 2.
30 tightly upon the die roll Il.
Figure 4 is an enlarged diametrical section
through the completed closure.
The roll 8 is mounted on a vshaft 3| which,
through a speed reducer 32, drives the cam 22.
Figure 5 is an enlarged diametrical section
through a secondary roll formed as an incident
Thus, as the web passes beneath roll 8 the slit
ting knife lßis caused to gradually move laterally
to the construction of the closure shown in Fig
ure 4.
of the path of the web across the gap between
the stationary pressure rolls 24 and 25 to produce
Figure 6 is a view in diametrical section show
an elongated diagonal cut separating the web 30
ing a modified embodiment, with one plane face.
Figure 7 is a View in diametrical section show
into two webs 35 and 36.
Web 3B passes directly from the die roll Il to
ing a modiñed embodiment, with two curvilinear
55 a new parent roll 31 wound upon mandrel 38.
Only web 35 passes through the adhesive appa
ratus, being coated with adhesive delivered there
to from tank I4 by rolls I3 and I2 so that as web
35 is wound spirally about mandrel I5 it will
adhere to previously wound convolutions upon the
mandrel to make up closure 45, which is the ul
timate objective of the invention.
Starting with the assumed web dimensions on
the parent roll 1, and assuming the knife I8 to be
initially at its extreme right hand position, as
viewed in Figure 3, it will be apparent that the di
vided web 3S wound on mandrel 38 will be ver-y
narrow adjacent the mandrel, as is indicated at 4I
in Figures 4 and 5 are heated. Shellac, and most
of the thermo-setting plastics may be used in this
manner to make unnecessary the application of
adhesive to the webs en route to the respective
rolls.While paper is the preferred material to be
used in accordance with this invention, it will
be apparent to those skilled in the art that thin
flexible webs of fabric and plastics, and other
materials may be used. Assuming that the mate
rial used is fibrous and porous, as are paper and
fabrics and some plastics, it will be apparent that
the closure, either in the process of manufacture
in Figure 5. The divided web 35, on the other
or following the completion of manufacture, may
be impregnated as desired to give it any appro
hand, will have its greatest width close to the man
priate finish or to make it proof against water
drel I5, as is indicated at 42 in Figure 4. The With
or other liquid.
drawal of the mandrel will leave at 42 a bung
receiving opening at which the closure 40 will
Due to its “beam section” the resulting closure
is_ extremely strong, even Without reenforcement,
have its greatest thickness, and from which it Will
taper from a central thickness of 3A of an inch 20 and may readily be made as thick as desired at
the center or periphery without any waste of
tov a marginal thickness of 1/2 an inch at 43.
paper stock or any unnecessary waste. The thick
The divided web 3B is not Wasted when wound
into the new parent roll 3‘I but may be passed
ness at the center or the periphery may be varied
through apparatus identical with that shown in
Figure 1 (save for the absence of- the slitting roll)
to Wind another closure which will then be iden
tical With that shown in Figure 4. Re-winding
either for the purpose of changing its strength
characteristics or increasing the length of the
bung hole. For a given strength of closure it is
estimated that by means of the present inven
is easy because no adhesive is used in making up
tion I am able to save about 20 percent in weight
the roll shown in Figure 5.
and about 25 percent in material as compared
However, the roll shown in Figure 5 may> like 30 with any other structure or method, the saving
Wise constitute a closure, if adhesively treated
in expense being even greater in most instances.
to unite the several convolutions of the spirally
No claim is made in the present application for
wound web.
the apparatus herein disclosed.
I claim:
For some purposes it may be desirable that the
closure should have its maximum thickness at its
1. A barrel head or the like comprising a clo
outer periphery instead of its inner periphery, and
sure of generaly circular contour and of tapering
the invention contemplates the construction of
thickness from a central portion to a peripheral
such a closure as shown at 31.
By manipulating the Winding operation, con
portion thereof, said closure comprising a spi
rally extending strip having its successive con
volutions bonded unitarily to each other and
‘ducting it against a form, or deforming thewound
roll before its convolutions are set in unitary
progressively advancing helically whereby said
assembly, any desired conformation may be pro
closure is of conventional form, its outer and in
duced. The embodiment 45 shown in Figure 6
ner faces being arcuate.
is identical with that shown in Figure 4 except
2. A barrel head or the like comprising a paper
that one side is fiat. The embodiment 4U shown 45 strip of substantially continuously varying Width
in Figure 7 is made from the same tapered strip
wound spirally in convolutions, successive con
but is convexly arched.
volutions being unitarily adherent to each other,
Any of the closures may be reenforced and
greatly strengthened by inserting any type of
and the resulting closure having a central open
ing adjacent to which said strip has its maximum
fastener 48, such as Wire nails. Hereinafter I use 50 width, said` closure tapering progressively to a
the word “nail” generically to include equivalent
minimum section adjacent its periphery.
devices, whether threaded or not. The nails pref
3. The device of claim 2 in which the convo
erably extend radially, and from the outer pe
lutions of the strip are impregnated, the impreg
ripheries of the closures, as shown in Figure 8.
nation providing the adherence between such
The nails may be driven into the barrel head or.
closure during its manufacture, or may enter the
4. A barrel head or the like comprising a thin .
head through the barrel in which the headA is
annulus having a central opening and composed
mounted for use.
substantially entirely of a ribbon of progressiVely
It will be understood that any of the rolls
varying width extending in aV continuous spiral
shown may have their spirally, wound convolu 60 from said opening to the outer periphery of the
tions united by adhesive with which they may be
annulus and provided with adhesive means bond
impregnated after being wound as rolls, the ap-`
ing successive convolutions unitarily to consti
paratus comprising rolls II , I2, I3 and glue pot
tute a head progressively varying in thickness
I4 being omitted in such cases. Or the web stock
from said opening to said outer periphery, the
supplied from roll ‘I may already be impregnated
opposing faces of said annulus having a shallow
with a substance such that it will unite the sev
eral convolutions when the rolls Wound» as shown
' taper frusto-conically.
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