US3618869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servoing mechanism for improved typewriter ribbon spooling
Assignee: International Business Machines Corp
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Filing: 1970-06-30
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Granted: 1971-11-09
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Expires: 1990-06-30
Abstract
Abstract A web-spooling apparatus for winding a thin web on a core is constructed to control any tendency of the web to telescope. A drive roller rides on the periphery of the web as it winds the web on the core. The drive roller includes web-penetrating radial spikes and has a pair of flanges at the top and bottom which extend radially beyond the spikes and contact the edges of the web should the web tend to move axially off the core. The core is mounted on a spindle in such a way as to permit the core to yaw about the spindle. Contact between the web and a flange causes the core to be yawed about the spindle and thereby provides an angle of small magnitude between the core and web, thus causing the web to move axially in a direction opposite to its first such action, thereby tending to correct the telescoping condition.
Inventors
- 👤 David R Cialone
- 👤 Clifford E Herrick
- 👤 George T Slaughter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:33
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J33/24; B41J33/26; B41J32/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
Apparatus for winding a web on a core comprising: a rotatable drive member which is mounted to contact the periphery of the web wound on the core and feed the web to the core, mounting means to mount the drive member and core such that the said drive member and core move apart as the diameter of the web wound on the core increases, means for mounting said core for rotation so as to permit the core to yaw about its nominal axis of rotation, and guide means mounted at the top and bottom of said drive member, said guide means being adapted to contact the edges of the web if the web should telescope on said core and being so disposed relative to the core that contact between said web and one of said guide means will cause said core to yaw about said axis in a direction tending to correct the telescoping condition.
Claim 2
Dependent Claim
155 words
Apparatus for winding a web on a core comprising: a rotatable drive member which is mounted to contact the periphery of the web wound on the core and feed the web to the core, mounting means to mount the drive member and core such that the said drive member and core move apart as the diameter of the web wound on the core increases, means for mounting said core for rotation so as to permit the core to yaw about its nominal axis of rotation, and guide means mounted at the top and bottom of said drive member, said guide means being adapted to contact the edges of the web if the web should telescope on said core and being so disposed relative to the core that contact between said web and one of said guide means will cause said core to yaw about said axis in a direction tending to correct the telescoping condition.
Claim 3
Dependent Claim
40 words
Winding apparatus as defined in claim 1 wherein said drive member comprises a roller having radially extending spikes therein for penetrating the web wound on said core, and said guide means extend radially outwardly of said roller beyond said spikes.
Claim 4
Dependent Claim
179 words
Apparatus for winding a web on a core comprising: a rotatable drive member which is mounted to contact the periphery of the web wound on the core at a point in a hemicircle defined by the point where the web contacts the wound portion and a point about 180* from where the web contacts the wound portion in the direction of rotation of the core and feed the web to the core, mounting means to mount the drive member and core such that the said drive member and core move apart as the diameter of the web wound on the core increases, a spindle for mounting said core so as to permit the core to yaw about said spindle, and a pair of flanges on said drive member located at the top and bottom, said flanges being adapted to contact the edges of the web if the web should telescope on said core such that contact between said web and one of said flanges will cause said core to yaw about said spindle and thereby correct the telescoping condition.
Claim 5
Dependent Claim
179 words
Apparatus for winding a web on a core comprising: a rotatable drive member which is mounted to contact the periphery of the web wound on the core at a point in a hemicircle defined by the point where the web contacts the wound portion and a point about 180* from where the web contacts the wound portion in the direction of rotation of the core and feed the web to the core, mounting means to mount the drive member and core such that the said drive member and core move apart as the diameter of the web wound on the core increases, a spindle for mounting said core so as to permit the core to yaw about said spindle, and a pair of flanges on said drive member located at the top and bottom, said flanges being adapted to contact the edges of the web if the web should telescope on said core such that contact between said web and one of said flanges will cause said core to yaw about said spindle and thereby correct the telescoping condition.
Claim 6
Dependent Claim
41 words
Winding apparatus as defined in claim 3 wherein said drive member comprises a roller having radially extending spikes thereon for penetrating the web wound on said core, and said pair of flanges extend radially outwardly of said roller beyond said spikes.
Claim 7
Dependent Claim
134 words
An inked ribbon feed mechanism including: a rotatably mounted supply spool; a spindle; takeup spool loosely mounted to yaw on said spindle. an inked ribbon having one end attached to said supply spool and its other end attached to said takeup spool; and means to engage said ribbon on said takeup spool to advance said ribbon from said supply spool to said takeup spool past a printing position, said engaging means having sufficient traction with said ribbon to provide the total driving force for winding said ribbon on said takeup spool and said engaging means having guide means located at the top and bottom of said engaging means, said guide means being adapted to contact the edges of said ribbon if the ribbon should telescope relative to said core to correct the telescoping condition.
Claim 8
Dependent Claim
134 words
An inked ribbon feed mechanism including: a rotatably mounted supply spool; a spindle; takeup spool loosely mounted to yaw on said spindle. an inked ribbon having one end attached to said supply spool and its other end attached to said takeup spool; and means to engage said ribbon on said takeup spool to advance said ribbon from said supply spool to said takeup spool past a printing position, said engaging means having sufficient traction with said ribbon to provide the total driving force for winding said ribbon on said takeup spool and said engaging means having guide means located at the top and bottom of said engaging means, said guide means being adapted to contact the edges of said ribbon if the ribbon should telescope relative to said core to correct the telescoping condition.
Claim 9
Dependent Claim
97 words
The mechanism according to claim 5 in which: said engaging means is a drive roller having pointed projections thereon for penetrating said inked ribbon on said takeup spool to provide positive engagement therewith and with sufficient traction to provide the total driving force of said ribbon, said drive roller having circular flanges located at the top and bottom of said roller and extending radially outward of said pointed projections, and resilient means to constantly urge said projections on said drive roller into said inked ribbon irrespective of the diameter of said inked ribbon on said takeup spool.
Claim 10
Dependent Claim
93 words
The mechanism according to claim 6 including: a base plate; a cartRidge, said cartridge having a top wall, a bottom wall and a sidewall connecting said top and bottom walls removably mounted on said base plate; said supply spool being rotatably mounted in said cartridge; said takeup spool being rotatably mounted in said cartridge; said drive roller is supported by said base plate and extends through a curved slot in the bottom wall of said cartridge, and said circular flanges are located between said top wall and said bottom wall of said cartridge.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |