CA1153326A - Infeed knob normally disengaged from power shaft - Google Patents
Infeed knob normally disengaged from power shaftInfo
- Publication number
- CA1153326A CA1153326A CA000373906A CA373906A CA1153326A CA 1153326 A CA1153326 A CA 1153326A CA 000373906 A CA000373906 A CA 000373906A CA 373906 A CA373906 A CA 373906A CA 1153326 A CA1153326 A CA 1153326A
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- knob
- housing
- clutch
- clutch means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/10—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Crushing And Pulverization Processes (AREA)
- Transmission Devices (AREA)
Abstract
INFEED KNOB NORMALLY DISENGAGED FROM POWER SHAFT Abstract of Disclosure A hand operated knob associated with a power driven shaft of a machine but normally not engaged with such shaft when powered. The knob is movable axially to the shaft against a spring positioned in a clutch chamber intermediate of the shaft and knob to cause the clutch mechanism in such chamber to engage the knob to be used to turn the shaft prior to start up.
Description
;:iL153326 Background of the Art Shafts protruding from equipment which are power driven during norrnal operation present safety hazards in that clothing of personnel working near the equipment can be entangled in the rotating shaft causing injury. Where shafts do not require manual operation for start-up opera-tion, such shafts can be enclosed in housings.
Shafts that require exposure for manual operation can be preferably designed, as apprOpriate, so that the exposed shaft end does not rotate during powered operation.
A number of arrangements to accomplish this feature have been proposed.
U.S. Patent No. 3,986,409 to Tripp et al. discloses a control knob which must be depressed to engage the shaft end. When the knob is not pushed it is disengaged and does not rotate with the shaft.
U.S. Patent No. 4,194,412 to Boyer discloses a 30 ball-groove arrangement for translating knob movement with respect to shaft movement.
Other related patents include U.S. Patent No.
Shafts that require exposure for manual operation can be preferably designed, as apprOpriate, so that the exposed shaft end does not rotate during powered operation.
A number of arrangements to accomplish this feature have been proposed.
U.S. Patent No. 3,986,409 to Tripp et al. discloses a control knob which must be depressed to engage the shaft end. When the knob is not pushed it is disengaged and does not rotate with the shaft.
U.S. Patent No. 4,194,412 to Boyer discloses a 30 ball-groove arrangement for translating knob movement with respect to shaft movement.
Other related patents include U.S. Patent No.
2,797,592 to Marrapese and 3,208,302 to Lewis.
`~
-~153326 Summary o~ the Invention Broadly, the invention is a clutch arrangement positioned between a hand-operated knob and a shaft to engage the knob with the shaft including an intermediate housing which accommodates a shaft mounted on the knob and a composite housing having first clutch means both in the housing and on the shaft and second clutch means formed as part of the housing. Spring means surrounding the shaft is positioned in a portion of the housing.
It is a feature of the invention that none of the parts which rotate during normal power driving of the power shaft are exposed to the machine operator to cause injury.
It is a further feature that the composite housing between the power shaft and the knob includes one chamber which chamber accommodates the clutch and shaft knob and the knob return spring.
.
Brief Description of the Drawings Fig. 1 is a partial side elevational view of a burster machine including a pair of web drive rolls;
Fig. 2 is an elevational sectional view of a drive and clutch unit for driving a drive roll;
Fig. 3 is an elevational section view, similar to Fig. 2, in which the clutch is engaged by pulling the knob;
! 25 and Fig. 4 is a sectional view taken along lines 4-4 of Fig. 3.
,.
Description of a Preferred Embodiment ,.
JU Referring to Fig. l,burster machine 10 processes a continuous web 11 of tandemly arranged paper forms which web 11 is caused to move in the direction of arrow 12 over stationary burster element 13 by pulling action of drive rolls 14, 16 rotating clockwise about shafts 17, 18 respec-tively. Burster element 13 includes apex 19 which acts upon :
, ~1533Z6 spaced-apart perforations (not shown) in web 11 to separate web 11 into individual sheets, all as well known in the burster art.
Turning to Fig. 2, the drive and clutch unit 21 is adapted to be connected to shaft 17 or 18 (or both) through connector member 22 to provide shaft drive through pulley 23 and a belt (not shown). During normal operation of the burster 10, rolls 17 and 18 rotate through pulley drives driving one or both of the rolls 17 and 18.
To prevent rotation of adjustment hand knob 24 during normal running operation, while permitting hand operated rotation of shaft 17 or 18 for threading and initial movement of web 11 into and between rolls 14 and 16, a clutch arrange-ment is provided which includes a pulley housing 26, an int~--mediate housing 27 and knob housing 28, all arranged in tandem.
As provided, housings 26, 27 and 28 form a composite housing 30 between knob pulley 23 and knob 24. With respect to the clutch arrangement (and particularlYFigs. 2, 3 and 4), con-nector member 22 and pulley housing 26 are affixed to pulley23 on opposite sides thereof. Pulley housing 26, which has recess 29 therein, is bolted to pulley 23 through four (4) threaded bolts 31. Bolt heads 32 are positioned in pulley recesses 33 and bolt stems 34 are secured in threaded recesses in the intermediate housing 27.
Intermediate housing 27 also includes a recess 36 which compliments recess 29 to accommodate projecting clutch ; member 37. Recess 36 includes a plurality of opposite pro-jecting clutch receiving cavities 38 which receive and engage projecting clutch members 37 when the clutch is moved to its engaging pOSitiOI) of Fig. 3. Projecting clutch members 37 are secured to knob shaft 39 which is journalled in inter-mediate housing 27 for rotation therein. Coil spring 41 positioned in and guided by inner recess 42 of intermediate housing 27 normally urges and holds the shaft (and the knob secured to it by set screw 43) in the position shown in ~i33Z6 ~, Fig. 2. Recesses 29, 36 and 42 together form hou ing chamber 45.
When the burster is not being power driven and the web is being threaded or adjusted, pulley 23 may be hand driven through hand knob 24 by pulling knob 24 in the direction of arrow 44 tand as necessary rotating the knob full turns or fractions of a turn either clockwise or counterclockwise) until the radially projecting clutch members 37 engage none or more of clutch receiving cavities 38. Knob 24 is then rotated, while continuing to exert a pull in the direction of arrow 44, to rotatepulley 23 and directly rotate rolls 14 or 16 (or both) as necessary to thread and adjust web ll. After this operation is complete, knob 24 is released allowing spring 42 to return knob 24 and associated parts to the disengaged Fig. 2 position.
When burster lO is energized, power driven pulley 23 rotates at high speed while knob 24 remains stationary thus avoiding the danger of an operator or other person being injured by a rotating knob.
The clutch and drive unit 21 may be used on powered-shaft machines other than bursters to accomplish hand thread-ing through a knob while avoiding rotation of the knob during normal powered operation.
, :
`~
-~153326 Summary o~ the Invention Broadly, the invention is a clutch arrangement positioned between a hand-operated knob and a shaft to engage the knob with the shaft including an intermediate housing which accommodates a shaft mounted on the knob and a composite housing having first clutch means both in the housing and on the shaft and second clutch means formed as part of the housing. Spring means surrounding the shaft is positioned in a portion of the housing.
It is a feature of the invention that none of the parts which rotate during normal power driving of the power shaft are exposed to the machine operator to cause injury.
It is a further feature that the composite housing between the power shaft and the knob includes one chamber which chamber accommodates the clutch and shaft knob and the knob return spring.
.
Brief Description of the Drawings Fig. 1 is a partial side elevational view of a burster machine including a pair of web drive rolls;
Fig. 2 is an elevational sectional view of a drive and clutch unit for driving a drive roll;
Fig. 3 is an elevational section view, similar to Fig. 2, in which the clutch is engaged by pulling the knob;
! 25 and Fig. 4 is a sectional view taken along lines 4-4 of Fig. 3.
,.
Description of a Preferred Embodiment ,.
JU Referring to Fig. l,burster machine 10 processes a continuous web 11 of tandemly arranged paper forms which web 11 is caused to move in the direction of arrow 12 over stationary burster element 13 by pulling action of drive rolls 14, 16 rotating clockwise about shafts 17, 18 respec-tively. Burster element 13 includes apex 19 which acts upon :
, ~1533Z6 spaced-apart perforations (not shown) in web 11 to separate web 11 into individual sheets, all as well known in the burster art.
Turning to Fig. 2, the drive and clutch unit 21 is adapted to be connected to shaft 17 or 18 (or both) through connector member 22 to provide shaft drive through pulley 23 and a belt (not shown). During normal operation of the burster 10, rolls 17 and 18 rotate through pulley drives driving one or both of the rolls 17 and 18.
To prevent rotation of adjustment hand knob 24 during normal running operation, while permitting hand operated rotation of shaft 17 or 18 for threading and initial movement of web 11 into and between rolls 14 and 16, a clutch arrange-ment is provided which includes a pulley housing 26, an int~--mediate housing 27 and knob housing 28, all arranged in tandem.
As provided, housings 26, 27 and 28 form a composite housing 30 between knob pulley 23 and knob 24. With respect to the clutch arrangement (and particularlYFigs. 2, 3 and 4), con-nector member 22 and pulley housing 26 are affixed to pulley23 on opposite sides thereof. Pulley housing 26, which has recess 29 therein, is bolted to pulley 23 through four (4) threaded bolts 31. Bolt heads 32 are positioned in pulley recesses 33 and bolt stems 34 are secured in threaded recesses in the intermediate housing 27.
Intermediate housing 27 also includes a recess 36 which compliments recess 29 to accommodate projecting clutch ; member 37. Recess 36 includes a plurality of opposite pro-jecting clutch receiving cavities 38 which receive and engage projecting clutch members 37 when the clutch is moved to its engaging pOSitiOI) of Fig. 3. Projecting clutch members 37 are secured to knob shaft 39 which is journalled in inter-mediate housing 27 for rotation therein. Coil spring 41 positioned in and guided by inner recess 42 of intermediate housing 27 normally urges and holds the shaft (and the knob secured to it by set screw 43) in the position shown in ~i33Z6 ~, Fig. 2. Recesses 29, 36 and 42 together form hou ing chamber 45.
When the burster is not being power driven and the web is being threaded or adjusted, pulley 23 may be hand driven through hand knob 24 by pulling knob 24 in the direction of arrow 44 tand as necessary rotating the knob full turns or fractions of a turn either clockwise or counterclockwise) until the radially projecting clutch members 37 engage none or more of clutch receiving cavities 38. Knob 24 is then rotated, while continuing to exert a pull in the direction of arrow 44, to rotatepulley 23 and directly rotate rolls 14 or 16 (or both) as necessary to thread and adjust web ll. After this operation is complete, knob 24 is released allowing spring 42 to return knob 24 and associated parts to the disengaged Fig. 2 position.
When burster lO is energized, power driven pulley 23 rotates at high speed while knob 24 remains stationary thus avoiding the danger of an operator or other person being injured by a rotating knob.
The clutch and drive unit 21 may be used on powered-shaft machines other than bursters to accomplish hand thread-ing through a knob while avoiding rotation of the knob during normal powered operation.
, :
Claims (6)
1. A drive and clutch device attachable to a normally powered machine shaft for turning the shaft during periods when the shaft is not power driven comprising a) a housing;
b) a chamber in said housing;
c) a knob shaft journalled in the housing with a first end of the knob shaft positioned in the chamber;
d) a knob secured to the other end of the shaft positioned exterior of the housing;
e) first clutch means on the first end portion of the knob shaft;
f) second clutch means on the interior of the housing;
g) spring means surrounding said knob shaft in said housing which spring means normally urges the first clutch means away from the second clutch means whereby the normally powered shaft rotates independently of the knob until and unless the knob is moved away from the powered shaft to compress the spring means and engage the first and second clutch means.
b) a chamber in said housing;
c) a knob shaft journalled in the housing with a first end of the knob shaft positioned in the chamber;
d) a knob secured to the other end of the shaft positioned exterior of the housing;
e) first clutch means on the first end portion of the knob shaft;
f) second clutch means on the interior of the housing;
g) spring means surrounding said knob shaft in said housing which spring means normally urges the first clutch means away from the second clutch means whereby the normally powered shaft rotates independently of the knob until and unless the knob is moved away from the powered shaft to compress the spring means and engage the first and second clutch means.
2. The device of claim 1 in which the chamber walls include cavities which form the second clutch means.
3. The device of claim 1 in which the spring means is a coil spring surrounding the knob shaft.
4. A drive and clutch device attachable to a norma?-ly powered machine shaft of a web burster machine for turni??
said shaft during periods when the shaft is not power driven comprising a) a pulley mounted axially to said power shaft a housing secured to such pulley;
b) a chamber in said housing;
c) a knob shaft journalled in the housing with a first end of the knob shaft positioned in the chamber;
d) a knob secured to the other end of the shaft positioned exterior of the housing;
e) first clutch means on the first end portion of the knob shaft;
f) second clutch means on the interior of the housing;
g) spring means surrounding said knob shaft in said housing which spring means normally urges the first clutch means away from the second clutch means whereby the normally powered shaft rotates independently of the knob until and unless the knob is moved away from the powered shaft to compress the spring means and engage the first and second clutch means.
said shaft during periods when the shaft is not power driven comprising a) a pulley mounted axially to said power shaft a housing secured to such pulley;
b) a chamber in said housing;
c) a knob shaft journalled in the housing with a first end of the knob shaft positioned in the chamber;
d) a knob secured to the other end of the shaft positioned exterior of the housing;
e) first clutch means on the first end portion of the knob shaft;
f) second clutch means on the interior of the housing;
g) spring means surrounding said knob shaft in said housing which spring means normally urges the first clutch means away from the second clutch means whereby the normally powered shaft rotates independently of the knob until and unless the knob is moved away from the powered shaft to compress the spring means and engage the first and second clutch means.
5. The device of claim 4 in which the chamber walls include cavities which form the second clutch means.
6. The device of claim 4 in which the spring means is a coil spring surrounding the knob shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22238081A | 1981-01-05 | 1981-01-05 | |
| US222,380 | 1981-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1153326A true CA1153326A (en) | 1983-09-06 |
Family
ID=22831962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000373906A Expired CA1153326A (en) | 1981-01-05 | 1981-03-26 | Infeed knob normally disengaged from power shaft |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1153326A (en) |
| DE (1) | DE3152118A1 (en) |
| FR (1) | FR2497550A1 (en) |
| GB (1) | GB2090646B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479597A (en) * | 1983-02-16 | 1984-10-30 | Uarco Incorporated | Burster for continuous form stationery |
| GB2157800B (en) * | 1984-04-17 | 1987-07-15 | Hoover Plc | Rotary control |
| CN108457996B (en) * | 2018-04-18 | 2023-12-08 | 胡景昌 | Clutch device for winch and winch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2797592A (en) * | 1952-09-03 | 1957-07-02 | Patent Button Company Of Tenne | Appliance knobs |
| US3208302A (en) * | 1962-12-10 | 1965-09-28 | Browning Ind Inc | Cleaning rod for fire arms |
| US3986409A (en) * | 1975-07-07 | 1976-10-19 | Raytheon Company | Push-to-engage device |
| US4026397A (en) * | 1975-10-06 | 1977-05-31 | Xerox Corporation | Control knob clutches with lock |
| US4194412A (en) * | 1976-10-20 | 1980-03-25 | Graphics Equipment International Corp. | Handwheel disengage mechanism |
-
1981
- 1981-03-26 CA CA000373906A patent/CA1153326A/en not_active Expired
- 1981-12-30 DE DE19813152118 patent/DE3152118A1/en not_active Withdrawn
-
1982
- 1982-01-04 FR FR8200015A patent/FR2497550A1/en active Pending
- 1982-01-05 GB GB8200177A patent/GB2090646B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3152118A1 (en) | 1982-08-12 |
| GB2090646A (en) | 1982-07-14 |
| FR2497550A1 (en) | 1982-07-09 |
| GB2090646B (en) | 1984-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20000906 |