US3874654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for feeding cardboard or like blanks
Assignee: Simon Corrugating Machinery Ltd
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Filing: 1973-05-11
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Granted: 1975-04-01
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Expires: 1993-05-11
Abstract
Abstract Mechanism for feeding cardboard or like blanks one at a time from the underside of a stack thereof comprising a table, the forward part of which is comprised by three reciprocatory suction feed cups adapted, in use, to pull the leading edge of the lowermost blank in the stack positively downwardly and progress it forwardly beneath a feed gate and carry it into the nip between a pair of feed rollers having a relieved central section, the central reciprocatory feed cup being adapted on its forward stroke to advance to a greater extent than the feed cups on either side thereof to carry the blank right into the nip between the feed rollers, the central feed cup then being located within the relieved central section of the feed rollers, the reciprocatory feed cups to either side being arranged to be arrested once they have carried the leading edge of the blank beneath the feed gate.
Inventors
- 👤 Barry Holt
- 👤 Norman Frank Buckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:17
CPC Classifications
B; B65; B65G; B65G59/00; B65G59/06; B65G59/067; B65H; B65H3/00; B65H3/08; B65H3/12; B65H3/122
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
185 words
Mechanism for feeding cardboard or like blanks one at a time from the underside of a stack thereof comprising a table, the forward part of which is comprised by three reciprocably mounted suction feed cups adapted, in use, to pull the leading edge of the lowermost blank in the stack positively downwardly and upon forward stroke progress it forwardly beneath a feed gate, a pair of feed rollers defining a nip forwardly of said feed gate having a relieved central section, means for moving all of said cups together on the forward stroke in such relation that the central reciprocatory feed cup on its forward stroke advances to a greater extent than the feed cups on either side thereof to carry the blank right into the nip between the feed rollers, part of the central feed cup then being located within the relieved central section of the feed rollers, and the reciprocatory feed cups to either side are arrested on the forward stroke short of the feed roller nip once they have aided in carrying the leading edge of the blank beneath the feed gate.
Claim 2
Dependent Claim
185 words
Mechanism for feeding cardboard or like blanks one at a time from the underside of a stack thereof comprising a table, the forward part of which is comprised by three reciprocably mounted suction feed cups adapted, in use, to pull the leading edge of the lowermost blank in the stack positively downwardly and upon forward stroke progress it forwardly beneath a feed gate, a pair of feed rollers defining a nip forwardly of said feed gate having a relieved central section, means for moving all of said cups together on the forward stroke in such relation that the central reciprocatory feed cup on its forward stroke advances to a greater extent than the feed cups on either side thereof to carry the blank right into the nip between the feed rollers, part of the central feed cup then being located within the relieved central section of the feed rollers, and the reciprocatory feed cups to either side are arrested on the forward stroke short of the feed roller nip once they have aided in carrying the leading edge of the blank beneath the feed gate.
Claim 3
Dependent Claim
23 words
Mechanism according to claim 1 wherein the suction feed cups are reciprocated by synchronized cam means via intermediary cam followers an lever systems.
Claim 4
Dependent Claim
67 words
Mechanism according to claim 2 wherein suction is applied continuously to the suction feed cups on either side of the central suction feed cup and wherein suction is applied to the central suction feed cup only during its forward or feeding stroke and part of its return stroke, the central suction feed cup being ported to atmosphere during at least the initial part of its return stroke.
Claim 5
Dependent Claim
39 words
Mechanism according to claim 3 wherein each of the suction feed cups is comprised by a box having a perforated top wall, the top walls being in the plane of a plate forming the rear parts of the table.
Claim 6
Dependent Claim
36 words
MechanisM according to claim 4 wherein the interiors of the boxes defining the suction feed cups lying to either side of the central suction feed cup are connected by means of hoses with a suction fan.
Claim 7
Dependent Claim
70 words
Mechanism according to claim 5 wherein the box defining the central suction feed cup has a rearward extension and base plate containing a port which slides in sealed relationship over a fixed block provided with recesses which are adapted to communicate in turn with the port as the cup is reciprocated, one of said recesses being connected with a vacuum pump whilst the other of said recesses communicates with atmosphere.
Claim 8
Dependent Claim
70 words
Mechanism according to claim 4 wherein the box defining the central suction feed cup has a rearward extension and base plate containing a port which slides in sealed relationship over a fixed block provided with recesses which are adapted to communicate in turn with the port as the cup is reciprocated, one of said recesses being connected with a vacuum pump whilst the other of said recesses communicates with atmosphere.
Claim 9
Dependent Claim
67 words
Mechanism according to claim 1 wherein suction is applied continuously to the suction feed cups on either side of the central suction feed cup and wherein suction is applied to the central suction feed cup only during its forward or feeding stroke and part of its return stroke, the central suction feed cup being ported to atmosphere during at least the initial part of its return stroke.
Claim 10
Dependent Claim
39 words
Mechanism according to claim 8 wherein each of the suction feed cups is comprised by a box having a perforated top wall, the top walls being in the plane of a plate forming the rear parts of the table.
Claim 11
Dependent Claim
36 words
Mechanism according to claim 9 wherein the interiors of the boxes defining the suction feed cups lying to either side of the central suction feed cup are connected by means of hoses with a suction fan.
Claim 12
Dependent Claim
70 words
Mechanism according to claim 10 wherein the box defining the central suction feed cup has a rearward extension and base plate containing a port which slides in sealed relationship over a fixed block provided with recesses which are adapted to communicate in turn with the port as the cup is reciprocated, one of said recesses being connected with a vacuum pump whilst the other of said recesses communicates with atmosphere.
Claim 13
Dependent Claim
70 words
Mechanism according to claim 9 wherein the box defining the central suction feed cup has a rearward extension and base plate containing a port which slides in sealed relationship over a fixed block provided with recesses which are adapted to communicate in turn with the port as the cup is reciprocated, one of said recesses being connected with a vacuum pump whilst the other of said recesses communicates with atmosphere.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |