US1686405A - Manufacture of containers or capsules - Google Patents

Manufacture of containers or capsules Download PDF

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Publication number
US1686405A
US1686405A US292498A US29249828A US1686405A US 1686405 A US1686405 A US 1686405A US 292498 A US292498 A US 292498A US 29249828 A US29249828 A US 29249828A US 1686405 A US1686405 A US 1686405A
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neck
capsule
container
forming
closing device
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US292498A
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Campbell Robert Hunter
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles

Definitions

  • This invention relates to the manufacture of metal containers, or capsules, for liquids, or gases, under pressure the said containers, or capsules, being more especially of the 6 kind which are provided with an internally screw-threaded neck and an internal shoul der, which latter constitutes a seating for a removable closing device which consists in, or comprises, a plug of soft, or plastic,
  • a hermetical closure being effected by subjecting the said plug ,to pressure whereby the metal is caused to spread, flow or be squirted outwards and to enter and be firmly held in the said internally screw-threaded neck, the said closing device being removed from the container, or capsule, after use by unscrewing it from the said internally screwthreaded neck so that the said container, or capsule, can be re-used if desired.
  • the screw-threaded neck has been formed b making the wall of the said neck c'onsi erably thicker than that of the wall of the body-part of the said container, or capsule, for example, of a thickness such that the internal diameter of the said neck is equal to, or approximately equal to, the internal diameter of the aperture in the shoulder to be formed therein through 80 which the liquid, or gas, under pressure is to pass, and then enlarging the internal diameter of the bore of the said neck to a reuired depth inwards so as to form the said s oulder which is to constitute the seating for the removable closing device inserted in the part of enlarged internal diameter at the proper time.
  • the said enlarged bore of the neck is screw-threaded so that after the container, or capsule, has been used, the removable closin device can be unscrewed therefrom and t e said container, or capsule, be re-used.
  • the said container, or capsule has been made of thin metal which is of the same, or approximately the same, thickness throughout.
  • This type of container, or capsule does not however, permit of the closing device being secured to the neck of the container, or capsule, in such manner that itcan be removed therefrom except by cutting the upper portion of the said neck away, and consequently the said container, or ca sule, is not so adaptable for re-use as the fore-mentioned type of container, or capsule.
  • the 65 aperture in the neck of the second mentioned type of the container, or capsule, closed by the closing device is of relatively large diameter and consequently the area of the surface of the said closing device exposed to the pressure of the liquid, or gas Within the said container, or capsule, is larger than is desirable.
  • This invention has for its object to produce containers, or capsules of the thin metal type which has hitherto been incapable of repeated re-use,'with a neck provided with aninternal shoulder constituting a seating for a removable closing device, whereby the said containers, or capsules, can be repeatedly re-used and which can be more easily, quickly -and economically manufactured than hitherto.
  • the container, or capsule is manufactured from thin material as hitherto used and during the process of making the body-part of the container, or capsule, which process may be as hitherto) the wall of the neck portion thereof is thickened sufiiciently to enable an annular groove to be turned on its exterior in a plane approximating ⁇ ;l that in which the shoulder, constituting t e seating for the closing device, is to be formed in the exterior of the said neck, the said groove weakening the S said neck at this part for a purpose herein; after referred to.
  • the neck of the so far formed container, or capsule may then be held in a die the interior surface of which is sha ed to the required outward'shape, or con guration and diameter of the neck of the finished container, or capsule.
  • Pressure is applied, by any suitable means, at the outer end of the said neck which causes the said neck to collapse, orturn inwardly, in the form of an annular pleat, at the weakened .part thereof formed by the before-mentioned groove, which inwardly turned pleated part constitutes the shoulder upon which the closing device is to be seated.
  • the body-part of the container, or capsule, 1 is made of thin metal in the known manner, but the neck portion 2 thereof is thickened, during the process of forming the said body-part, sufficiently to enable an annular groove 3 (see Figure 2) to be turned on its exterior in a plane approximating that in which a shoulder constituting the seating for the closing device, is to be formed in the interior of the said neck, the said groove weakening the said neck at this part.
  • the neck 2 of the so far formed container or capsule is then held in a die, indicated at 4, in dot-and-dash lines Figure 2, the interior surface of which is shaped to the required outward shape, or configuration, and diameter of the neck 2 of the finished container, or capsule, 1.
  • Pressure is then applied by any suitable means, such for example, as by the plunger 5 indicated in dot-and-dash lines in Figure 2, at the outer end of the neck 52 which causes the said neck to collapse, or turn inwardly, in
  • What I claim is 1.
  • the steps of making the body part and at the same time forming a neck part of thickened wall section, weakening the neck part by forming an annular groove on the exterior of the neck, and applying pressure at the outer end of the neck thereby causing it to collapse and turn inwardly at the weakened part thus forming an internal shoulder adapted to act as a seat for a closing part.
  • the neck portion 2 thereof is thickened, during the process of forming the said body-part, sufficiently to enable an annular groove 3 (see Figure 2) to be turned on its exterior in a plane approximating that in which a shoulder constituting the seating for the closing device, is to be formed in the interior of the said neck, the said groove weakening the said neck at this part.
  • the neck 2 of the so far formed container or capsule is then held in a die, indicated at 4, in dot-and-dash lines Figure 2, the interior surface of which is shaped to the required outward shape, or configuration, and diameter of the neck 2 of the finished container, or capsule, 1.
  • Pressure is then applied by any suitable means, such for example, as by the plunger 5 indicated in dot-and-dash lines in Figure 2, at the outer end of the neck 52 which causes the said neck to collapse, or turn inwardly, in
  • What I claim is 1.
  • the steps of making the body part and at the same time forming a neck part of thickened wall section, weakening the neck part by forming an annular groove on the exterior of the neck, and applying pressure at the outer end of the neck thereby causing it to collapse and turn inwardly at the weakened part thus forming an internal shoulder adapted to act as a seat for a closing part.

Description

Oct. 2, 1928.
R. H. CAMPBELL muumc'runs OF BONTAINERS on CAPSULE Filed July 13, 1928 INVENToR Patented Oct. 2, 1928.
UNITED STATES ROBERT HUNTER CAMPBELL, OF UPPER EDMONTON, ENGLAND.
MANUFACTURE OF CONTAINERS OB GAISULES.
Application filed July 13, 1928, Serial No. 292,498, and in Great Britain July 11, 1927.
This invention relates to the manufacture of metal containers, or capsules, for liquids, or gases, under pressure the said containers, or capsules, being more especially of the 6 kind which are provided with an internally screw-threaded neck and an internal shoul der, which latter constitutes a seating for a removable closing device which consists in, or comprises, a plug of soft, or plastic,
10 metal, a hermetical closure being effected by subjecting the said plug ,to pressure whereby the metal is caused to spread, flow or be squirted outwards and to enter and be firmly held in the said internally screw-threaded neck, the said closing device being removed from the container, or capsule, after use by unscrewing it from the said internally screwthreaded neck so that the said container, or capsule, can be re-used if desired.
Hitherto, in a containeryor capsule, of the aforesaid kind, the screw-threaded neck has been formed b making the wall of the said neck c'onsi erably thicker than that of the wall of the body-part of the said container, or capsule, for example, of a thickness such that the internal diameter of the said neck is equal to, or approximately equal to, the internal diameter of the aperture in the shoulder to be formed therein through 80 which the liquid, or gas, under pressure is to pass, and then enlarging the internal diameter of the bore of the said neck to a reuired depth inwards so as to form the said s oulder which is to constitute the seating for the removable closing device inserted in the part of enlarged internal diameter at the proper time. The said enlarged bore of the neck is screw-threaded so that after the container, or capsule, has been used, the removable closin device can be unscrewed therefrom and t e said container, or capsule, be re-used.
In another type of container, or capsule, the said container, or capsule, has been made of thin metal which is of the same, or approximately the same, thickness throughout. This type of container, or capsule, does not however, permit of the closing device being secured to the neck of the container, or capsule, in such manner that itcan be removed therefrom except by cutting the upper portion of the said neck away, and consequently the said container, or ca sule, is not so adaptable for re-use as the fore-mentioned type of container, or capsule. Moreover, the 65 aperture in the neck of the second mentioned type of the container, or capsule, closed by the closing device is of relatively large diameter and consequently the area of the surface of the said closing device exposed to the pressure of the liquid, or gas Within the said container, or capsule, is larger than is desirable.
This invention has for its object to produce containers, or capsules of the thin metal type which has hitherto been incapable of repeated re-use,'with a neck provided with aninternal shoulder constituting a seating for a removable closing device, whereby the said containers, or capsules, can be repeatedly re-used and which can be more easily, quickly -and economically manufactured than hitherto.
According to this invention the container, or capsule, is manufactured from thin material as hitherto used and during the process of making the body-part of the container, or capsule, which process may be as hitherto) the wall of the neck portion thereof is thickened sufiiciently to enable an annular groove to be turned on its exterior in a plane approximating};l that in which the shoulder, constituting t e seating for the closing device, is to be formed in the exterior of the said neck, the said groove weakening the S said neck at this part for a purpose herein; after referred to.
The neck of the so far formed container, or capsule, may then be held in a die the interior surface of which is sha ed to the required outward'shape, or con guration and diameter of the neck of the finished container, or capsule. Pressure is applied, by any suitable means, at the outer end of the said neck which causes the said neck to collapse, orturn inwardly, in the form of an annular pleat, at the weakened .part thereof formed by the before-mentioned groove, which inwardly turned pleated part constitutes the shoulder upon which the closing device is to be seated.
In the accompanying drawing Figures 1, 2, 3 and 4 illustrate, in sections, the up r portion of a container, or capsule, in din ent sta es of manufacture, in accordance with this'invention.
In Figure 1 the body-part of the container, or capsule, 1 is made of thin metal in the known manner, but the neck portion 2 thereof is thickened, during the process of forming the said body-part, sufficiently to enable an annular groove 3 (see Figure 2) to be turned on its exterior in a plane approximating that in which a shoulder constituting the seating for the closing device, is to be formed in the interior of the said neck, the said groove weakening the said neck at this part. The neck 2 of the so far formed container or capsule, is then held in a die, indicated at 4, in dot-and-dash lines Figure 2, the interior surface of which is shaped to the required outward shape, or configuration, and diameter of the neck 2 of the finished container, or capsule, 1. Pressure is then applied by any suitable means, such for example, as by the plunger 5 indicated in dot-and-dash lines in Figure 2, at the outer end of the neck 52 which causes the said neck to collapse, or turn inwardly, in
the form of an annular pleat 6, as shewn in Figure 3, at the aforesaid weakened part 3, which inwardly turned pleated part constitutes the shoulder upon which the closing device is to be seated. The portion 7 of the interior of the neck 2 of the container, or capsule, extending outward of the shoulder (5 may be subsequently screw-threzuled, as shown in Figure 4, by any known or suitable means, to receive a removable closing device such for example as shewn in specification No. 253,788.
By forming the shoulder 6 in the manner duced and consequently the liability of leakage is minimized.
What I claim is 1. In the manufacture of containers or capsules of the kind referred to from thin metal, the steps of making the body part and at the same time forming a neck part of thickened wall section, weakening the neck part by forming an annular groove on the exterior of the neck, and applying pressure at the outer end of the neck thereby causing it to collapse and turn inwardly at the weakened part thus forming an internal shoulder adapted to act as a seat for a closing part.
2. In the nianutacture'of containers or capsules of the kind referred to from thin metal, the steps of making the body part and at the same time forming a neck part of thickened wall section, weakening the neck part by forming an annular groove on the exterior of the neck, holding the weakened neck in a die, and applying pressure at the outer end of the neck thereby causing it to collapse and turn inwardly at the weakened part thus forming an internal shoulder adapted to act as a seat for a closing part, substantially as described.
3. In the manufacture of a container or capsule of the class described from a thin walled substantially cylindrical body, the steps of forming a neck by reducing the diameter of a portion of the body and increasing the wall thickness of said portion by displacement of the metal incident to the reduction of diameter, forming a groove in the exterior of said neck portion to weaken the same, and compressing the neck portion axially to cause the weakened portion thereof to collapse inwardly forming an annular shoulder adapted to serve as a seat for a closing device.
In testimony whereof I have signed my name to this specification.
ROBERT HUNTER CAMPBELL.
CERTIFICATE OF CORRECTION.
Patent No. 1,686, 405.
Granted October 2, 1928, to
ROBERT HUNTER CAMPBELL.
It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:
Page 1, Line 84, for the word "exterior" read "interior"; and that the said Letters Patent shouldbe read with this correction therein that the same may conform to the record of the can in the Patent Office.
Signed and scaled this 20th day of November. A D. 1928.
(Seal) M. J. Moore, Acting Commissioner of Patents.
known manner, but the neck portion 2 thereof is thickened, during the process of forming the said body-part, sufficiently to enable an annular groove 3 (see Figure 2) to be turned on its exterior in a plane approximating that in which a shoulder constituting the seating for the closing device, is to be formed in the interior of the said neck, the said groove weakening the said neck at this part. The neck 2 of the so far formed container or capsule, is then held in a die, indicated at 4, in dot-and-dash lines Figure 2, the interior surface of which is shaped to the required outward shape, or configuration, and diameter of the neck 2 of the finished container, or capsule, 1. Pressure is then applied by any suitable means, such for example, as by the plunger 5 indicated in dot-and-dash lines in Figure 2, at the outer end of the neck 52 which causes the said neck to collapse, or turn inwardly, in
the form of an annular pleat 6, as shewn in Figure 3, at the aforesaid weakened part 3, which inwardly turned pleated part constitutes the shoulder upon which the closing device is to be seated. The portion 7 of the interior of the neck 2 of the container, or capsule, extending outward of the shoulder (5 may be subsequently screw-threzuled, as shown in Figure 4, by any known or suitable means, to receive a removable closing device such for example as shewn in specification No. 253,788.
By forming the shoulder 6 in the manner duced and consequently the liability of leakage is minimized.
What I claim is 1. In the manufacture of containers or capsules of the kind referred to from thin metal, the steps of making the body part and at the same time forming a neck part of thickened wall section, weakening the neck part by forming an annular groove on the exterior of the neck, and applying pressure at the outer end of the neck thereby causing it to collapse and turn inwardly at the weakened part thus forming an internal shoulder adapted to act as a seat for a closing part.
2. In the nianutacture'of containers or capsules of the kind referred to from thin metal, the steps of making the body part and at the same time forming a neck part of thickened wall section, weakening the neck part by forming an annular groove on the exterior of the neck, holding the weakened neck in a die, and applying pressure at the outer end of the neck thereby causing it to collapse and turn inwardly at the weakened part thus forming an internal shoulder adapted to act as a seat for a closing part, substantially as described.
3. In the manufacture of a container or capsule of the class described from a thin walled substantially cylindrical body, the steps of forming a neck by reducing the diameter of a portion of the body and increasing the wall thickness of said portion by displacement of the metal incident to the reduction of diameter, forming a groove in the exterior of said neck portion to weaken the same, and compressing the neck portion axially to cause the weakened portion thereof to collapse inwardly forming an annular shoulder adapted to serve as a seat for a closing device.
In testimony whereof I have signed my name to this specification.
ROBERT HUNTER CAMPBELL.
CERTIFICATE OF CORRECTION.
Patent No. 1,686, 405.
Granted October 2, 1928, to
ROBERT HUNTER CAMPBELL.
It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:
Page 1, Line 84, for the word "exterior" read "interior"; and that the said Letters Patent shouldbe read with this correction therein that the same may conform to the record of the can in the Patent Office.
Signed and scaled this 20th day of November. A D. 1928.
(Seal) M. J. Moore, Acting Commissioner of Patents.
US292498A 1927-07-11 1928-07-13 Manufacture of containers or capsules Expired - Lifetime US1686405A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901003A (en) * 1956-11-01 1959-08-25 Burndy Corp Solid head tubular connector and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901003A (en) * 1956-11-01 1959-08-25 Burndy Corp Solid head tubular connector and method of making same

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