US3589100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double web packaging machine
Assignee: Halm Instrument Co Inc
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Filing: 1969-04-03
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Granted: 1971-06-29
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Expires: 1989-04-03
Abstract
Abstract The invention is a machine for wrapping bundles of variable size and width such as bundles of envelopes or mail. Upper and lower webs of heat-sealable material are fed to a first location and sealed together. The bundle is pushed against the sealed webs and the webs are then end-sealed at the rear of the bundle. The endsealed bundle is then moved to a second location on a collapsible table and the sides of the webs are sealed. One of the sidesealing means is movable so as to accommodate variable width bundles. Excess wrapping material is then cut off one or both the sides and the bundle ejected. This invention relates to means for wrapping bundles of mail of variable size in heat-sealable plastic.
Inventors
- 👤 Clement R Konars
- 👤 Arthur Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:31
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/02; B65B9/026
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
245 words
Means for wrapping bundles of discrete articles of variable length and width, comprising, means to feed a first web of heat-sealable wrapping material to a first work location, means to feed a second web of heat-sealable wrapping material to said first work location, a bundle-receiving platform, means to hold said webs together in a first plane at said first work location and means to seal the ends of said webs together, means to hold back the leading end of said bundle, means to push said bundle on said platform along an axis perpendicular to said plane against said sealed webs and said holdback means and completely past said first plane to form a loop of said web-wrapping material around said bundle, means to slidably mount said holdback means to accommodate different length bundles, said holdback means being pushed together with said bundle, said holdback means being retractable to permit said bundle to pass it after said bundle has been sealed at its rear end, means to operate said heat seal means to heat seal the ends of said web loop, means to cut said loop from said webs and operate said endsealing means to reseal the ends of said webs in said first plane, first stationary side heat sealing means at said second work location, second side-sealing means at said second work location, said second side-sealing means being adapted to move perpendicular to said axis to permit snug side sealing of bundles of variable width.
Claim 2
Dependent Claim
245 words
Means for wrapping bundles of discrete articles of variable length and width, comprising, means to feed a first web of heat-sealable wrapping material to a first work location, means to feed a second web of heat-sealable wrapping material to said first work location, a bundle-receiving platform, means to hold said webs together in a first plane at said first work location and means to seal the ends of said webs together, means to hold back the leading end of said bundle, means to push said bundle on said platform along an axis perpendicular to said plane against said sealed webs and said holdback means and completely past said first plane to form a loop of said web-wrapping material around said bundle, means to slidably mount said holdback means to accommodate different length bundles, said holdback means being pushed together with said bundle, said holdback means being retractable to permit said bundle to pass it after said bundle has been sealed at its rear end, means to operate said heat seal means to heat seal the ends of said web loop, means to cut said loop from said webs and operate said endsealing means to reseal the ends of said webs in said first plane, first stationary side heat sealing means at said second work location, second side-sealing means at said second work location, said second side-sealing means being adapted to move perpendicular to said axis to permit snug side sealing of bundles of variable width.
Claim 3
Dependent Claim
14 words
Apparatus as in claim 1 having a collapsible table at said second work location.
Claim 4
Dependent Claim
16 words
Apparatus as in claim 1 wherein said bundle comprises stack of envelopes mounted on one edge.
Claim 5
Dependent Claim
54 words
Apparatus as in claim 1 wherein said second work location is separated from said first work location by a predetermined distance and having means to move said end-sealed bundle loop comprising pair of fingers adapted to extend into said loop and means to move said fingers and said bundle to said second work location.
Claim 6
Dependent Claim
24 words
Apparatus as in claim 1 wherein said side-sealing means have snubbing means to wrap said web loop snugly against the sides of said bundle.
Claim 7
Dependent Claim
18 words
Apparatus as in claim 5 wherein at least one of said side-sealing means includes excess material trimming means.
Claim 8
Dependent Claim
25 words
Apparatus as in claim 1 having control means connected to operate said web-feeding means, said end-sealing means and said side-sealing means in a predetermined sequence.
References Cited (Backward Citations)
US3158973A
Cited
US3377772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |