US3754705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double cam driven feed roll
Assignee: LITTELL F MACHINE CO
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Filing: 1972-07-05
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Granted: 1973-08-28
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Expires: 1992-07-05
Abstract
Abstract The present invention is adapted to be associated with a cutting and punching press and accordingly a pair of feed rolls including an upper idler feed roll and a lower driven feed roll is journalled respectively by an entering end frame section and by a stationary exit end frame section. The entering end frame section is pivotally movable to permit access to the die structure of the press and the constantly rotating shaft of the press is operatively connected by a flexible timing belt to driven pulleys and then through cam and follower devices to the lower feed rolls which are thus caused to rotate intermittently. A vernier type adjustable mounting is provided for the upper feed roll so that with the rolls in assembled relation different vernier openings in the assembled parts can be aligned and as a result the operative position of the upper feed roll with respect to the lower feed roll can be varied to accomodate lower feed rolls of larger or smaller diameter. Also the vernier adjustable mounting provides depending angled arms and air bags are associated therewith for yieldingly biasing the arms in a direction to force the upper feed roll into pressure contact with its lower feed roll. A connecting tube forming part of the vernier adjustable mounting is cammed by means on the upper reciprocating die of the press on each down stroke thereof to rock the tube and the upper feed roll to lift the same from contact with its lower feed roll whereby to momentarily free the material being fed while the press is operative for cutting and punching the material.
Inventors
- 👤 C Wiig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:50
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/02; B65H20/04; B21; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/08; B21D43/09; B30; B30B; B30B15/00; B30B15/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
216 words
In roll feeding apparatus for intermittently feeding strip material, in combination, frame structure including a stationary exit end frame section and a movable entering end frame section having pivotal securement to the said stationary exit end frame section, a pair of feed rolls journalled for rotation by each frame section including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft and normally in pressure contact with its lower feed roll, a constantly rotating drive shaft, a drive pulley on said shaft for rotation therewith, a pair of driven pulleys fixed to journalled input shafts respectively, a timing belt operatively connecting the drive pulley with said driven pulleys whereby the journalled input shafts are also rotated constantly, a cam and follower device in associated relation with each input shaft for transforming the constant rotation of the input shafts into intermittent rotation and which is delivered to output shafts respectively, and a connector device interposed between each output shaft and one of the shafts journalling the lower feed rolls, said connector devices being releasable to thereby permit disconnection of the lower feed rolls from their respective output shafts so that the entering end frame section can have pivotal movement with respect to the stationary exit end section.
Claim 2
Dependent Claim
216 words
In roll feeding apparatus for intermittently feeding strip material, in combination, frame structure including a stationary exit end frame section and a movable entering end frame section having pivotal securement to the said stationary exit end frame section, a pair of feed rolls journalled for rotation by each frame section including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft and normally in pressure contact with its lower feed roll, a constantly rotating drive shaft, a drive pulley on said shaft for rotation therewith, a pair of driven pulleys fixed to journalled input shafts respectively, a timing belt operatively connecting the drive pulley with said driven pulleys whereby the journalled input shafts are also rotated constantly, a cam and follower device in associated relation with each input shaft for transforming the constant rotation of the input shafts into intermittent rotation and which is delivered to output shafts respectively, and a connector device interposed between each output shaft and one of the shafts journalling the lower feed rolls, said connector devices being releasable to thereby permit disconnection of the lower feed rolls from their respective output shafts so that the entering end frame section can have pivotal movement with respect to the stationary exit end section.
Claim 3
Dependent Claim
53 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 1, additionally including a roller brush for each lower feed roll to keep the roll clean and free of dust and objectionable particles, and resilient spring means for maintaining the roller brush in pressure contact with its lower feed roll.
Claim 4
Dependent Claim
93 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 1, additionally including a roller brush for each lower feed roll to keep the roll clean and free of dust and objectionable particles, resilient spring means for maintaining the roller brush in pressure contact with its lower feed roll, and a vacuum chamber provided by each frame section and having communicating relation with the roller brush thereof, whereby the dust and objectionable particles removed by the roller brush from its lower feed roll is further removed to the vacuum chamber.
Claim 5
Dependent Claim
219 words
In roll feeding apparatus for intermittently feeding strip material, in combination, frame structure including a stationary exit end section and a movable entering end frame section having pivotal securement to the said stationary exit end frame section, a pair of feed rolls journalled for rotation by each frame section including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft and normally in pressure contact with its lower feed roll, a constantly rotating drive shaft, a drive pulley on said shaft for rotation therewith, a pair of driven pulleys fixed to journalled input shafts respectively, a timing belt operatively connecting the drive pulley with said driven pulleys whereby the journalled input shafts are also rotated constantly, a cam and follower device in operative associated relation with each input shaft for transforming the constant rotation of the input shafts into intermittent rotation and which is delivered to output shafts respectively, means connecting each output shaft with one of the shafts journalling the lower feed rolls, whereby the lower feed rolls have intermittent rotation, a roller brush for each lower feed roll to keep the roll clean and free of dust and objectioNable particles, and resilient spring means for maintaining the roller brush in pressure contact with its lower feed roll.
Claim 6
Dependent Claim
219 words
In roll feeding apparatus for intermittently feeding strip material, in combination, frame structure including a stationary exit end section and a movable entering end frame section having pivotal securement to the said stationary exit end frame section, a pair of feed rolls journalled for rotation by each frame section including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft and normally in pressure contact with its lower feed roll, a constantly rotating drive shaft, a drive pulley on said shaft for rotation therewith, a pair of driven pulleys fixed to journalled input shafts respectively, a timing belt operatively connecting the drive pulley with said driven pulleys whereby the journalled input shafts are also rotated constantly, a cam and follower device in operative associated relation with each input shaft for transforming the constant rotation of the input shafts into intermittent rotation and which is delivered to output shafts respectively, means connecting each output shaft with one of the shafts journalling the lower feed rolls, whereby the lower feed rolls have intermittent rotation, a roller brush for each lower feed roll to keep the roll clean and free of dust and objectioNable particles, and resilient spring means for maintaining the roller brush in pressure contact with its lower feed roll.
Claim 7
Dependent Claim
56 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 4, additionally including a vacuum chamber provided by each frame section and having communicating relation with the roller brush thereof, whereby the dust and objectionable particles removed by the roller brush from its lower feed roll is further removed to the vacuum chamber.
Claim 8
Dependent Claim
103 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 4, additionally including a stock deflector table for each frame section for supporting and directing the strip material either to or from the bight of its respective pair of feed rolls, the free end of said table being located relatively adjacent the feed rolls, means pivotally supporting the opposite end of the table, and an adjustment member having threaded relation with the table relatively adjacent its pivotal supporting means whereby the said free end of the table can be adjusted vertically for alignment with the bight of the feed rolls.
Claim 9
Dependent Claim
48 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 6, additionally including vertically adjustable clamp pins for in turn supporting the pivotal supporting means for the opposite end of the table, and upper and lower guide rolls journalled by the said adjustable clamp pins.
Claim 10
Dependent Claim
180 words
In roll feeding apparatus for intermittently feeding strip material, in combination, a frame structure including a stationary exit end frame section and a movable entering end frame section, a pair of feed rolls journalled for rotation by each frame section including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft and normally having co-acting relation with its lower feed roll, means having operative connection with the shaft for the lower feed roll for intermittently rotating the lower feed roll, a vernier type adjustable mounting for the upper feed roll including a lever member positioned at each end of the upper feed roll and to the free ends of which the journalling shaft for the upper feed roll is secured, and a connecting tube joining the lever members to form a unit therewith and which is supported for pivotal movement so that oscillation of the connecting tube to produce rocking of the lever members will elevate and lower the said upper feed roll with respect to its lower feed roll.
Claim 11
Dependent Claim
180 words
In roll feeding apparatus for intermittently feeding strip material, in combination, a frame structure including a stationary exit end frame section and a movable entering end frame section, a pair of feed rolls journalled for rotation by each frame section including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft and normally having co-acting relation with its lower feed roll, means having operative connection with the shaft for the lower feed roll for intermittently rotating the lower feed roll, a vernier type adjustable mounting for the upper feed roll including a lever member positioned at each end of the upper feed roll and to the free ends of which the journalling shaft for the upper feed roll is secured, and a connecting tube joining the lever members to form a unit therewith and which is supported for pivotal movement so that oscillation of the connecting tube to produce rocking of the lever members will elevate and lower the said upper feed roll with respect to its lower feed roll.
Claim 12
Dependent Claim
76 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 8, additionally including an angled arm fixed to and depending from each lever member, and air bags in associated relation with the depending end of said arms and which contain a fluid medium under pressure, whereby the arms are yieldingly biased to rock the connecting tube unit in a direction holding the upper feed roll in pressure contact with its lower feed roll.
Claim 13
Dependent Claim
59 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 9, additionally including a lever fixed to the connecting tube approximately centrally thereof and adapted to be cammed at pre-determined times for oscillating the connecting tube against the pressure of the air bags to lift the upper feed roll from contact with its lower feed roll.
Claim 14
Dependent Claim
27 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 10, additionally including a surge tank in communicating relation with the said air bags.
Claim 15
Dependent Claim
61 words
In roll feeding apparatus for intermittently feeding strip material as defined by claim 8, wherein the lever members each have releasable securement to the connecting tube at their respective end and which is of the vernier adjustable type so that the adjusted position of the upper feed roll can be varied to accommodate a lower feed roll of a different diameter.
Claim 16
Dependent Claim
276 words
In roll feeding apparatus for intermittently feeding strip material, in combination with a cutting and pUnching press having a top reciprocating die and a stationary bottom die, of frame structure in associated relation with the entering end of cutting and punching press and similar frame structure in associated relation with the exit end of said press, each frame structure including upper and lower co-acting feed rolls each journalled for rotation by its particular shaft, said upper feed roll normally having pressure contact with its lower feed roll, a vernier type adjustable mounting for the upper feed roll including a connecting tube journalled for pivotal movement and having an inside bracket part integral therewith at each end of the tube, a plurality of vernier openings in each said bracket part, an outside bracket part also having a plurality of vernier openings therein and which is positioned adjacent each of the inside bracket parts with certain vernier openings in alignment for receiving a retaining screw, whereby to join the bracket parts and the tube as a unit, said outside bracket parts providing lever arms respectively for the connecting tube and which carry the journalling shaft for upper feed roll at their free ends, whereby oscillation of the connecting tube will rock the lever arms to elevate and lower the upper feed roll with respect to its lower feed roll, a lever fixed to the connecting tube approximately centrally thereof, and camming means carried by the top reciprocating die and which is operative on the down stroke thereof to cam the said lever in a direction to lift the upper feed roll from contact with its lower feed roll.
Claim 17
Dependent Claim
276 words
In roll feeding apparatus for intermittently feeding strip material, in combination with a cutting and pUnching press having a top reciprocating die and a stationary bottom die, of frame structure in associated relation with the entering end of cutting and punching press and similar frame structure in associated relation with the exit end of said press, each frame structure including upper and lower co-acting feed rolls each journalled for rotation by its particular shaft, said upper feed roll normally having pressure contact with its lower feed roll, a vernier type adjustable mounting for the upper feed roll including a connecting tube journalled for pivotal movement and having an inside bracket part integral therewith at each end of the tube, a plurality of vernier openings in each said bracket part, an outside bracket part also having a plurality of vernier openings therein and which is positioned adjacent each of the inside bracket parts with certain vernier openings in alignment for receiving a retaining screw, whereby to join the bracket parts and the tube as a unit, said outside bracket parts providing lever arms respectively for the connecting tube and which carry the journalling shaft for upper feed roll at their free ends, whereby oscillation of the connecting tube will rock the lever arms to elevate and lower the upper feed roll with respect to its lower feed roll, a lever fixed to the connecting tube approximately centrally thereof, and camming means carried by the top reciprocating die and which is operative on the down stroke thereof to cam the said lever in a direction to lift the upper feed roll from contact with its lower feed roll.
Claim 18
Dependent Claim
62 words
In roll feeding apparatus as defined by claim 13, wherein the assembled position of the outside bracket parts on the inside bracket parts and thus their assembled position with respect to the connecting tube can be varied by aligning different vernier openings in the parts respectively and then securing and retaining the parts in such adjusted assembled relation by the retaining screw.
Claim 19
Dependent Claim
178 words
In roll feeding apparatus, in combination with frame structure, of a pair of feed rolls journalled thereby and including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft, a vernier type adjustable mounting for the upper feed roll including a connecting tube mounted for pivotal movement and having an inside bracket part integral at each end of the tube, a plurality of vernier openings in each inside bracket part, an outside bracket part also having a plurality of vernier openings therein and which is positioned adjacent each of the inside bracket parts with certain vernier openings in alignment for receiving a retaining screw, whereby the connecting tube and bracket parts are joined as a unit, said outside bracket parts providing lever arms respectively for the connecting tube and which carry the shaft for the upper feed roll at their free ends, whereby oscillation of the connecting tube will rock the lever arms to elevate and lower the upper feed roll with respect to its lower feed roll.
Claim 20
Dependent Claim
178 words
In roll feeding apparatus, in combination with frame structure, of a pair of feed rolls journalled thereby and including a lower feed roll journalled by its particular shaft and an upper feed roll also journalled by its particular shaft, a vernier type adjustable mounting for the upper feed roll including a connecting tube mounted for pivotal movement and having an inside bracket part integral at each end of the tube, a plurality of vernier openings in each inside bracket part, an outside bracket part also having a plurality of vernier openings therein and which is positioned adjacent each of the inside bracket parts with certain vernier openings in alignment for receiving a retaining screw, whereby the connecting tube and bracket parts are joined as a unit, said outside bracket parts providing lever arms respectively for the connecting tube and which carry the shaft for the upper feed roll at their free ends, whereby oscillation of the connecting tube will rock the lever arms to elevate and lower the upper feed roll with respect to its lower feed roll.
Claim 21
Dependent Claim
62 words
In roll feeding apparatus as defined by claim 15, wherein the assembled position of the outside bracket parts on the inside bracket parts and thus their assembled position with respect to the connecting tube can be varied by aligning different vernier openings in the parts respectively and then securing and retaining the parts in such adjusted assembled relation by the retaining screw.
Claim 22
Dependent Claim
51 words
In roll feeding apparatus as defined by claim 15, additionally including a lever fixed to the connecting tube approximately centrally thereof and which is adapted to be cammed at predetermined times for oscillating the tube in a direction to lift the upper feed roll from contact with its lower feed roll.
References Cited (Backward Citations)
US3638846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |