Patent US3735657A successfully refreshed from Google Patents.
US3735657A
Expired / Lapsed
US
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Apparatus for cutting strips of material
Assignee: Individual
•
Filing: 1971-03-09
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Granted: 1973-05-29
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Expires: 1991-03-09
Abstract
Abstract Material is fed between a pair of rollers by a pneumatically driven rack rotating a gear, which is connected to one of the rollers through a one direction clutch. When the rack moves downwardly to rotate the roller, a valve is activated just prior to downward movement of the rack stopping to cause a pneumatically powered knife to cut the fed material. Upon completion of cutting of the material, another valve is activated to return the knife to its inactive position and move the rack upwardly to its start position, which is determined by the position of an adjustable stop that limits the upward movement of the rack. This stop determines the amount of downward movement of the rack so as to select the length of the fed strip of material that is cut. In another embodiment, the non-driven roller is moved away from the driven roller when the thickness of the strip of fed material exceeds a predetermined thickness. When the thickness of the strip ceases to exceed the predetermined thickness after having exceeded the predetermined thickness, the non-driven roller is returned toward the rotated roller to cause activation of a valve to stop the downward movement of the rack and activate the knife irrespective of the position of the rack. This results in the thickened portion, which is not usable, being cut as close to the end of the thickened portion as possible so as to reduce material waste.
Inventors
- 👤 V Schmidt
- 👤 E Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:08
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/20; B26D5/22; B26D1/00; B26D1/01; B26D1/04; B26D1/06; B26D1/08; B26D1/085; Y; Y10; Y10T; Y10T83/00; Y10T83/081; Y10T83/091; Y10T83/444; Y10T83/4458; Y10T83/4493; Y10T83/4516; Y10T83/4518; Y10T83/4529; Y10T83/525; Y10T83/541; Y10T83/543
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
142 words
An apparatus for cutting strips of material including: means to feed the material, said feed means including means movable from a first position to feed the material; means to inactivate said feed means to stop feeding of the material in response to a selected length of the material being fed by said feed means past a cutting position; means to cut the fed material at the cutting position; means responsive to said feed means to activate said cutting means to cut the fed material substantially simultaneously with stopping of said feed means; and means responsive to said cutting means completing cutting of the fed material to cause simultaneous return of said cutting means to its inactive position and said movable means of said feed means to the first position in which feeding of the material by said feed means may again occur.
Claim 2
Independent Claim
142 words
An apparatus for cutting strips of material including: means to feed the material, said feed means including means movable from a first position to feed the material; means to inactivate said feed means to stop feeding of the material in response to a selected length of the material being fed by said feed means past a cutting position; means to cut the fed material at the cutting position; means responsive to said feed means to activate said cutting means to cut the fed material substantially simultaneously with stopping of said feed means; and means responsive to said cutting means completing cutting of the fed material to cause simultaneous return of said cutting means to its inactive position and said movable means of said feed means to the first position in which feeding of the material by said feed means may again occur.
Claim 3
Dependent Claim
51 words
The apparatus according to claim 1 in which: said feed means includes: two cooperating rollers between which the material is fed; and means to rotate one of said rollers in only one direction to feed the material between said rollers, said rotating means including said movable means of said feed means.
Claim 4
Dependent Claim
55 words
The apparatus according to claim 2 in which said rotating means includes: a gear; means connecting said gear to said rotated roller, said connecting means including means to allow rotation of said rotated roller by said gear only in the one direction; and means to drive said gear, said drive means including said movable means.
Claim 5
Dependent Claim
28 words
The apparatus according to claim 3 in which: said drive means includes: a rack meshing with said gear; and means to axially move said rack in opposite directions.
Claim 6
Dependent Claim
42 words
The apparatus according to claim 4 including means cooperating with said rack to limit the movement of said rack in the direction in which said rotated roller is not rotated to determine the selected length of material fed by said feed means.
Claim 7
Dependent Claim
32 words
The apparatus according to claim 2 including means to mount said roller that is not rotated by said rotating means for movement relative to said rotated roller to receive the material therebetween.
Claim 8
Dependent Claim
28 words
The apparatus according to claim 3 including braking means to prevent rotation of said rotated roller beyond that imparted by rotation of said gear by said drive means.
Claim 9
Independent Claim
213 words
An apparatus for cutting strips of material including: means to feed the material; first means to inactivate said feed means to stop feeding of the material in response to a selected length of the material being fed by said feed means past a cutting position; means to cut the fed material at the cuTting position; means responsive to said feed means to activate said cutting means to cut the fed material substantially simultaneously with stopping of said feed means; means responsive to said cutting means completing cutting of the fed material to cause return of said cutting means to its inactive position; means to sense when the thickness of the material being fed by said feed means exceeds a predetermined thickness and when the thickness of the material being fed by said feed means ceases to exceed the predetermined thickness after having exceeded the predetermined thickness; second means to inactivate said feed means after said sensing means has sensed that the thickness of the material has ceased to exceed the predetermined thickness after having exceeded the predetermined thickness irrespective of whether said feed means has fed the selected length of material; and said second inactivating means including means to cause activation of said cutting means substantially simultaneously with inactivation of said feed means.
Claim 10
Independent Claim
213 words
An apparatus for cutting strips of material including: means to feed the material; first means to inactivate said feed means to stop feeding of the material in response to a selected length of the material being fed by said feed means past a cutting position; means to cut the fed material at the cuTting position; means responsive to said feed means to activate said cutting means to cut the fed material substantially simultaneously with stopping of said feed means; means responsive to said cutting means completing cutting of the fed material to cause return of said cutting means to its inactive position; means to sense when the thickness of the material being fed by said feed means exceeds a predetermined thickness and when the thickness of the material being fed by said feed means ceases to exceed the predetermined thickness after having exceeded the predetermined thickness; second means to inactivate said feed means after said sensing means has sensed that the thickness of the material has ceased to exceed the predetermined thickness after having exceeded the predetermined thickness irrespective of whether said feed means has fed the selected length of material; and said second inactivating means including means to cause activation of said cutting means substantially simultaneously with inactivation of said feed means.
Claim 11
Dependent Claim
130 words
The apparatus according to claim 8 in which: said feed means includes two cooperating rollers between which the material is fed; means to rotate one of said rollers in only one direction to feed the material between said rollers; means to mount the other of said rollers for movement relative to said one roller; and said sensing means includes means responsive to a movement of a predetermined amount of said other roller in a first direction away from said one roller due to the thickness of the material exceeding the predetermined thickness and a movement of a predetermined amount of said other roller in a second direction toward said one roller due to the thickness of the material ceasing to exceed the predetermined thickness after having exceeded the predetermined thickness.
Claim 12
Dependent Claim
52 words
The apparatus according to claim 9 in which said sensing means includes: cam means movable a predetermined distance by said feed means after said other roller moves a predetermined distance in the second direction; and means responsive to said cam means moving the predetermined distance to render said second inactivating means effective.
Claim 13
Independent Claim
223 words
An apparatus for cutting strips of material including: means to feed the material; first means to inactivate said feed means to stop feeding of the material in response to a selected length of the material being fed by said feed means past a cutting position; means to cut the fed material at the cutting position; means responsive to said feed means to activate said cutting means to cut the fed material substantially simultaneously with stopping of said feed means; means responsive to said cutting means completing cutting of the fed material to cause return of said cutting means to its inactive position; means to sense when the thickness of the material being fed by said feed means is less than a predetermined thickness and when the thickness of the material being fed by said feed means ceases to be less than the predetermined thickness after having been less than the predetermined thickness; second means to inactivate said feed means after said sensing means has sensed that the thickness of the material has ceased to be less than the predetermined thickness after having been less than the predetermined thickness irrespective of whether said feed means has fed the selected length of material; and said second inactivating means including means to cause activation of said cutting means substantially simultaneously with inactivation of said feed means.
Claim 14
Independent Claim
223 words
An apparatus for cutting strips of material including: means to feed the material; first means to inactivate said feed means to stop feeding of the material in response to a selected length of the material being fed by said feed means past a cutting position; means to cut the fed material at the cutting position; means responsive to said feed means to activate said cutting means to cut the fed material substantially simultaneously with stopping of said feed means; means responsive to said cutting means completing cutting of the fed material to cause return of said cutting means to its inactive position; means to sense when the thickness of the material being fed by said feed means is less than a predetermined thickness and when the thickness of the material being fed by said feed means ceases to be less than the predetermined thickness after having been less than the predetermined thickness; second means to inactivate said feed means after said sensing means has sensed that the thickness of the material has ceased to be less than the predetermined thickness after having been less than the predetermined thickness irrespective of whether said feed means has fed the selected length of material; and said second inactivating means including means to cause activation of said cutting means substantially simultaneously with inactivation of said feed means.
Claim 15
Dependent Claim
136 words
The apparatus according to claim 11 in which: said feed means includes two cooperating rollers between which the material is fed; means to rotate one of said rollers in only one direction to feed the material between said rollers; means to mount the other of said rollers for movement relative to said one roller; and said sensing means includes means responsive to a movement of a predetermined amount of said other roller in a first direction toward said one roller due to the thickness of the material being less than the predetermined thickness and a movement of a predetermined amount of said other roller in a second direction away from said one roller due to the thickness of the material ceasing to be less than the predetermined thickness after having been less than the predetermined thickness.
Claim 16
Dependent Claim
52 words
The apparatus according to claim 12 in which said sensing means includes: cam means movable a predetermined distance by said feed means after said other roller moves a predetermined distance in the second direction; and means responsive to said cam means moving the predetermined distance to render said second inactivating means effective.
Claim 17
Dependent Claim
31 words
The apparatus according to claim 1 including means cooperating with said feed means to determine the selected length of material fed by said feed means before said feed means is stopped.
Claim 18
Dependent Claim
34 words
The apparatus according to claim 1 in which said activating means comprises means engaged by said feed means at the completion of feeding of the selected length of material to activate said cutting means.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |