US3712558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Take-up device for a strip of web material
Assignee: Eastman Kodak Co
•
Filing: 1971-03-15
•
Granted: 1973-01-23
•
Expires: 1991-03-15
Abstract
Abstract A take-up device for a strip of web material includes a friction driven take-up reel having a pair of spaced flanges and a hub rotatably mounted on a housing. A plurality of teeth extend radially from the hub for engaging the leading end portion of a strip of web material. After leaving the open end of a threading channel having an open end spaced from the hub, the leading end portion of the strip of web material enters a link for guiding the strip to an arm which in turn directs the strip between the reel flanges to the hub. The strip is pulled away from the arm and out of the web guide link by tension applied thereto by the rotating hub to define a new path for the strip from the open end of the threading channel to the hub. A snubber positioned adjacent the open end of the threading channel has a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel to the web guide link and a second position spaced transversely from the first position in a direction perpendicular to the web material''s plane. The snubber is spring biased toward its first position and is moved toward its second position by web tension. When the strip is being rewound from the take-up reel, the snubber is effective to accommodate instantaneous differences in the velocity of the strip in the threading channel and the velocity of the web material being unwound from the take-up reel.
Inventors
- 👤 R Johnson
- 👤 C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:58
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/326
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
A take-up device for apparatus having a housing and a threading channel having an open end through which the leading end portion of a strip of web material may be advanced, said take-up device comprising: a hub rotatably mounted on the housing and spaced from the open end of the threading channel; means on said hub for engaging the leading end portion of a strip of web material and for holding the leading end on the hub; web guide means defining a path for guiding the leading end portion of a strip of web material from the open end of the threading channel to said hub, said web guide means including means for permitting a strip of web material to be withdrawn from said path in a direction transverse to the web material''s plane by tension applied to the strip; and means for rotating said hub in a direction to wind an engaged strip of web material thereabout and to tension the strip in said path, whereby the strip is withdrawn from said web guide means after the leading end portion is engaged on said hub.
Claim 2
Dependent Claim
186 words
A take-up device for apparatus having a housing and a threading channel having an open end through which the leading end portion of a strip of web material may be advanced, said take-up device comprising: a hub rotatably mounted on the housing and spaced from the open end of the threading channel; means on said hub for engaging the leading end portion of a strip of web material and for holding the leading end on the hub; web guide means defining a path for guiding the leading end portion of a strip of web material from the open end of the threading channel to said hub, said web guide means including means for permitting a strip of web material to be withdrawn from said path in a direction transverse to the web material''s plane by tension applied to the strip; and means for rotating said hub in a direction to wind an engaged strip of web material thereabout and to tension the strip in said path, whereby the strip is withdrawn from said web guide means after the leading end portion is engaged on said hub.
Claim 3
Dependent Claim
140 words
A take-up device as defined in claim 1 wherein said web guide means includes a link defining at least a portion of said path, said link comprising: means defining a first surface substantially perpendicular to the plane of a strip of web material being advanced through said path for guiding the edge of such a strip; a first wall having a second surface upstanding from said first surface; and a second wall having a third surface spaced from and facing said second surface for defining a space between said second and third surfaces for receiving a strip of web material, said second wall upstanding from said first surface a shorter distance than said first wall to permit a strip of web material to be moved over said second wall and out of said path by tension applied to the strip.
Claim 4
Dependent Claim
21 words
A take-up device as defined in claim 2 wherein said second wall is tapered at one end toward said first surface.
Claim 5
Dependent Claim
91 words
A take-up device as defined in claim 2 wherein: said link further comprises an open end through which the leading end portion of an advancing strip of web material may emerge from the space defined by said second and third surfaces; and said web guide means further includes an arm pivotally mounted on the housing, said arm having a surface extending generally from the open end of said link to said hub for guiding the leading end portion of an advancing strip of web material from said link to said hub.
Claim 6
Dependent Claim
99 words
A take-up device as defined in claim 1 further comprising: a snubber mounted for movement between (1) a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel into said path in said web guide means and (2) a second position spaced transversely from said path in a direction perpendicular to the web material''s plane, said snubber being movable from its first to its second position by the strip when the strip is withdrawn from said path by tension applied thereto by rotation of said hub.
Claim 7
Dependent Claim
24 words
A take-up device as defined in claim 5 further comprising spring means for urging said snubber from its second position toward its first position.
Claim 8
Dependent Claim
309 words
A take-up device for apparatus having a housing and a threading channel having an open end through which the leading end portion of a strip of web material may be advanced; said take-up device comprising: a hub rotatably mounted on the housing and spaced from the open end of the threading channel; means on said hub for engaging the leading end portion of a strip of web material and for holding the leading end on the hub; web guide means defining a path for guiding the leading end portion of a strip of web material from the open end of the threading channel to said hub, said web guide means including means for permitting a strip of web material to be withdrawn from said path in a direction transverse to the web mAterial''s plane by tension applied to the strip; drive means; means for selectively (1) coupling said drive means and said hub for rotating said hub in a winding direction as the strip is advanced through the threading channel to said hub to tension the strip in said path, whereby the strip is withdrawn from said web guide means and (2) uncoupling said drive means and said hub for permitting said hub to be rotates in an unwinding direction as the strip is advanced through the threading channel away from said hub; and a snubber mounted for movement between (1) a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel to said path and (2) a second position spaced transversely from said path in a direction perpendicular to the web material''s plane, said snubber being movable from its first to its second position by the strip of web material withdrawn from said path by tension applied to the film by rotation of said hub.
Claim 9
Dependent Claim
309 words
A take-up device for apparatus having a housing and a threading channel having an open end through which the leading end portion of a strip of web material may be advanced; said take-up device comprising: a hub rotatably mounted on the housing and spaced from the open end of the threading channel; means on said hub for engaging the leading end portion of a strip of web material and for holding the leading end on the hub; web guide means defining a path for guiding the leading end portion of a strip of web material from the open end of the threading channel to said hub, said web guide means including means for permitting a strip of web material to be withdrawn from said path in a direction transverse to the web mAterial''s plane by tension applied to the strip; drive means; means for selectively (1) coupling said drive means and said hub for rotating said hub in a winding direction as the strip is advanced through the threading channel to said hub to tension the strip in said path, whereby the strip is withdrawn from said web guide means and (2) uncoupling said drive means and said hub for permitting said hub to be rotates in an unwinding direction as the strip is advanced through the threading channel away from said hub; and a snubber mounted for movement between (1) a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel to said path and (2) a second position spaced transversely from said path in a direction perpendicular to the web material''s plane, said snubber being movable from its first to its second position by the strip of web material withdrawn from said path by tension applied to the film by rotation of said hub.
Claim 10
Dependent Claim
79 words
A take-up device as defined in claim 7 further comprising spring means for urging said snubber from its second position toward its first position, whereby said snubber assumes a third position intermediate said first position and said second position when said strip is advanced away from said hub, said snubber in said third position being effective to accommodate instantaneous differences in the strip''s velocity in said threading channel and the velocity of the strip being unwound from said hub.
Claim 11
Dependent Claim
141 words
A take-up device as defined in claim 8 wherein said web guide means includes a link defining at least a portion of said path, said link comprising: means defining a first surface substantially perpendicular to the plane of a strip of web material being advanced through said path for guiding the edge of such a strip; a first wall having a second surface upstanding from said first surface; and a second wall having a third surface spaced from and facing said second surface for defining a space between said second and third surfaces for receiving a strip of web material, said second wall upstanding from said first surface a shorter distance than said first wall to permit a strip of web material to be moved over said second wall and out of said path by tension applied to the web material.
Claim 12
Dependent Claim
91 words
A take-up device as defined in claim 9 wherein: said link further comprises an open end through which the leading end portion of an advancing strip of web material may emerge from the space defined by said second and third surfaces; and said web guide means further includes an arm pivotally mounted on the housing, said arm having a surface extending generally from the open end of said link to said hub for guiding the leading end portion of an advancing strip of web material from said link to said hub.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |