US3593489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tab slitter for caser
Assignee: Chisholm Ryder Co Inc
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Filing: 1969-09-23
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Granted: 1971-07-20
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Expires: 1989-09-23
Abstract
Abstract Mechanism for severing tabs connected to adjacent edges of certain flaps of a shipping case to be packed with containers or the like in connection with casing operations, said tabs holding the upper flaps of a caser closely against the outer surfaces of the sides and ends of a case incident to being loaded. The caser includes mechanism to elevate the cases successively to loading mechanism and incident to such elevation, tab-severing means are positioned to engage the tabs to sever the same and thereby permit the flaps to be closed as a subsequent operation. The tabsevering mechanism includes units respectively movable diagonally toward and from opposite corners of a case where the tabs are located and include rotatable serrated cutters which are powerdriven. Fluid-operated means also move said cutter units laterally toward said corners of a case to position the same for severing the tabs.
Inventors
- 👤 William F Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:30
CPC Classifications
B; B65; B65B; B65B61/00; B65B61/04; B65B61/06; B65B7/00; B65B7/16; B65B7/20; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7755; Y10T83/7763; Y10T83/7776; Y10T83/778
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
127 words
A case filling and handling machine operable to fill shipping cases with containers and having conveyor means to move empty cases to filling mechanism and elevating means operable to raise cases from said conveyor means to said filling mechanism, said cases having the upper end maintained open by means of the upper flaps being locked against the sides of each case by tabs connected between the adjacent ends of certain flaps, in combination with cutter means, and means supporting said cutter means adjacent and a fixed distance above said conveyor means and said elevating means and in position to engage and cut the tabs on a case so as to completely sever the same when a case is raised by said elevating means to said filling mechanism.
Claim 2
Dependent Claim
127 words
A case filling and handling machine operable to fill shipping cases with containers and having conveyor means to move empty cases to filling mechanism and elevating means operable to raise cases from said conveyor means to said filling mechanism, said cases having the upper end maintained open by means of the upper flaps being locked against the sides of each case by tabs connected between the adjacent ends of certain flaps, in combination with cutter means, and means supporting said cutter means adjacent and a fixed distance above said conveyor means and said elevating means and in position to engage and cut the tabs on a case so as to completely sever the same when a case is raised by said elevating means to said filling mechanism.
Claim 3
Dependent Claim
45 words
The machine according to claim 1 further including means to move said tab-severing means laterally toward the corners of cases when said cases reach said elevating means and are to be raised, thereby to bring said tabs and severing means into engagement with each other.
Claim 4
Dependent Claim
27 words
The machine according to claim 2 in which said severing means further include self-centering means operable to guide each severing means toward a corner of each case.
Claim 5
Dependent Claim
52 words
THe machine according to claim 3 in which said self-centering means comprise guide blocks having angularly related faces thereon respectively engageable with surfaces of adjacent downwardly extending upper flaps of a case and operable to effect disposition of said severing means in precise vertical alignment with the tabs connected to said flaps.
Claim 6
Dependent Claim
25 words
The machine according to claim 2 in which said means to move said severing means laterally toward the corners of a case comprise fluid-operated means.
Claim 7
Dependent Claim
73 words
The machine according to claim 5 in which said machine includes fluid-operated means connected to said elevating mechanism to raise and lower a case relative to said packing mechanism, and means connecting said fluid-operated means for said elevating mechanism and the fluid-operated means for said severing means to a source of fluid under pressure, and control means for said fluid under pressure operable to effect simultaneous actuation of all of said fluid-operated means.
Claim 8
Dependent Claim
31 words
The machine according to claim 1 in which said severing means comprise rotatably supported cutters and said severing means also including power-actuated means connected to said cutters to operate the same.
Claim 9
Dependent Claim
25 words
The machine according to claim 7 in which said movable cutters are circular and are supported for rotation, the periphery of said cutters being serrated.
Claim 10
Dependent Claim
60 words
The machine according to claim 7 in which each of said severing means is part of a unit which includes said power-operated means and said cutter, and means supporting said unit for lateral movement toward and from certain corners of a case when said case is disposed upon said elevating mechanism and is to be raised toward said severing means.
Claim 11
Dependent Claim
133 words
Mechanism to sever the tabs of cases for containers which extend between adjacent edges of certain upper flaps of a case to maintain the same against the sides of the case at least until it reaches elevating means and filling means in a machine for purposes of filling such cases, said severing mechanism comprising in combination, support means adapted to be aligned with said filling means and connected to such a machine adjacent the path of movement for cases to be moved to said filling means, and severing means comprising a cutter supported by said support means and adapted to be positioned by said support means in vertical alignment with the tabs on a case when said tabs are moved vertically past said cutter incident to elevating said case to said filling means.
Claim 12
Dependent Claim
133 words
Mechanism to sever the tabs of cases for containers which extend between adjacent edges of certain upper flaps of a case to maintain the same against the sides of the case at least until it reaches elevating means and filling means in a machine for purposes of filling such cases, said severing mechanism comprising in combination, support means adapted to be aligned with said filling means and connected to such a machine adjacent the path of movement for cases to be moved to said filling means, and severing means comprising a cutter supported by said support means and adapted to be positioned by said support means in vertical alignment with the tabs on a case when said tabs are moved vertically past said cutter incident to elevating said case to said filling means.
Claim 13
Dependent Claim
47 words
The tab-severing mechanism according to claim 10 further including guide means upon said support means, and additionally including means to move said severing means relative to said support means in opposite lateral directions toward and from the tabs of a case which are to be severed thereby.
Claim 14
Dependent Claim
27 words
The tab-severing mechanism according to claim 11 further including power means connected to said severing means and operable to effect said movement thereof in opposite lateral directions.
Claim 15
Dependent Claim
26 words
The tab-severing mechanism according to claim 12 in which said power means comprise fluid-operated cylinder and piston means connectable to a source of fluid under pressure.
Claim 16
Dependent Claim
17 words
The tab-severing mechanism according to claim 10 in which said severing blade comprises a power-operated rotatable blade.
Claim 17
Dependent Claim
20 words
The tab-severing mechanism according to claim 14 in which said rotatable blade is circular and the periphery thereof is serrated.
Claim 18
Dependent Claim
52 words
The tab-severing mechanism according to claim 14 in which said power means for rotating said blade comprises a unit, and means supporting said unit for lateral movement relative to said support means to dispose said severing means of said unit in position to engage tabs of a case to be severed thereby.
Claim 19
Dependent Claim
27 words
The tab-severing mechanism according to claim 16 in which said unit also includes fluid-operated means connected to said unit and operable to effect such lateral movement thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |