Patent US3928941A successfully refreshed from Google Patents.
US3928941A
Expired / Lapsed
US
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Machine for wrapping articles
Assignee: Individual
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Filing: 1974-01-25
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Granted: 1975-12-30
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Expires: 1994-01-25
Abstract
Abstract A machine for wrapping articles is disclosed which forms a sheath of the wrapping material, which can be paper or shrink wrap, around each article. The machine comprises a main endless conveyor including a plurality of article supporting platforms which rise in step-like array towards a sealing section, travel horizontally through the sealing section, and then descend in step-like array. Anvils and heat-sealing bars on endless conveyors are guided from above and below into the gaps between the platforms to form the sheaths. The anvils, bars, and platforms move continuously, parallel to one another, and at the same speed through the sealing section. An arrangement which pulls back the wrapping material is provided to ensure that each sheath is a relatively tight fit. The upper conveyor carrying the anvils can lift away from the main conveyor should an article become wedged in the machine.
Inventors
- 👤 Alec Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:49
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/02; B65B51/00; B65B51/10; B65B51/26; B65B51/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
234 words
A machine for wrapping articles comprising: a. a plurality of supports for receiving articles and transporting the articles in spaced-apart relationship along an article feed path having a first linear portion intersecting with and obliquely disposed to a succeeding adjacent second linear portion, whereby a support transporting an article along the first linear portion of said article feed path will be in step-wise relationship with a a support transporting an article along said second linear portion; b. a plurality of wrapping members for forming wrapping material into sleeves around said articles; c. means for guiding said wrapping members along a path which lies substantially in or parallel to the plane defined by said first and second linear portions and which converges with said article feed path before said first linear portion intersects with said second linear portion; and d. driving means for moving said plurality of supports and said plurality of wrapping members along their respective paths continuously and in synchronism, the oblique disposition of said first and second linear portions being such in relation to the wrapping member guiding means that said wrapping members enter the spaces between adjacent articles while the trailing one of said adjacent articles moves along said first linear portion and while the leading one of said adjacent articles moves along said second linear portion, whereby said wrapping members avoid obstruction from the leading edge of said trailing Article.
Claim 2
Dependent Claim
234 words
A machine for wrapping articles comprising: a. a plurality of supports for receiving articles and transporting the articles in spaced-apart relationship along an article feed path having a first linear portion intersecting with and obliquely disposed to a succeeding adjacent second linear portion, whereby a support transporting an article along the first linear portion of said article feed path will be in step-wise relationship with a a support transporting an article along said second linear portion; b. a plurality of wrapping members for forming wrapping material into sleeves around said articles; c. means for guiding said wrapping members along a path which lies substantially in or parallel to the plane defined by said first and second linear portions and which converges with said article feed path before said first linear portion intersects with said second linear portion; and d. driving means for moving said plurality of supports and said plurality of wrapping members along their respective paths continuously and in synchronism, the oblique disposition of said first and second linear portions being such in relation to the wrapping member guiding means that said wrapping members enter the spaces between adjacent articles while the trailing one of said adjacent articles moves along said first linear portion and while the leading one of said adjacent articles moves along said second linear portion, whereby said wrapping members avoid obstruction from the leading edge of said trailing Article.
Claim 3
Dependent Claim
38 words
A machine according to claim 1, in which said second linear portion is generally horizontal with said first linear portion sloping upwardly towards it, and in which said wrapping members converge with said article feed path from above.
Claim 4
Dependent Claim
26 words
A machine according to claim 2, in which said second linear portion of the article feed path is followed by a downwardly sloping third linear portion.
Claim 5
Dependent Claim
62 words
A machine according to claim 2, in which said plurality of supports are a series of platforms on which the articles stand, said platforms forming part of an endless conveyor connected in driven relation to said driving means and having their upper surfaces in the same horizontal plane while transporting said articles along the second linear portion of said article feed path.
Claim 6
Dependent Claim
75 words
A machine according to claim 1, in which there is a further plurality of wrapping members, and means for guiding said further plurality of wrapping members along a path which converges with the path along which the firstmentioned plurality of wrapping members are displaced and into co-operating relationship with the firstmentioned plurality of wrapping members, the arrangement being such that wrapping material is gripped between each pair of co-operating members and formed into said sleeves.
Claim 7
Dependent Claim
37 words
A machine according to claim 1, in which said wrapping members are adapted to sever synthetic plastics material and to form heat-sealed seams on each side of the line along which the synthetic plastics material is severed.
Claim 8
Dependent Claim
95 words
A maching according to claim 5, in which said wrapping members are adapted to sever synthetic plastics material and to form heat-sealed seams on each side of the line along which the synthetic plastics material is severed, and in which the wrapping members of one plurality each include at least three heated wires, the central wire being adapted to sever the material, and the outer wires being adapted to form said seams, and in which the wrapping members of the other plurality form anvils against which the wrapping members of said one plurality are pressed.
Claim 9
Dependent Claim
42 words
A machine according to claim 1, in which there is provided means for supplying two webs of wrapping material, one over and one under the articles, and means for taking up slack in the overlying web in the intervals between sleeve formation.
Claim 10
Dependent Claim
140 words
A machine according to claim 4, in which there is a further plurality of wrapping members, and means for guiding said further plurality of wrapping members along a path which converges with the path along which the firstmentioned plurality of wrapping members are displaced and into co-operating relationship with the firstmentioned plurality of wrapping members, the arrangement being such that wrapping material is gripped between each pair of co-operating wrapping members and formed into said sleeves, and in which the guide means for the two pluralities of wrapping members guides the wrapping members of the firstmentioned plurality downwardly with respect to the platforms to a level such that, in the second linear portion, their undersurfaces lie approximately in said horizontal plane, and guides the members of the second plurality upwardly so that their upper faces lie immediately beneath said undersurfaces.
Claim 11
Dependent Claim
51 words
A machine according to claim 9, in which the two pluralities of wrapping members form part of endless conveyors, and in which the conveyor of which the firstmentioned plurality of members forms part, is mounted to enable it to lift away from said second linear portion of the article feed path.
Claim 12
Dependent Claim
29 words
A machine according to claim 1, in which said wrapping members are guided so as to run parallel to the article feed path along said second linear portion thereof.
References Cited (Backward Citations)
US2804027A
Cited
US3122467A
Cited
US3191386A
Cited
US3158973A
Cited
US3727365A
Cited
US3729894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |