US3602727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop motion system for strand-handling machine
Assignee: Benjamin Booth Co
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Filing: 1969-12-02
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Granted: 1971-08-31
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Expires: 1989-12-02
Abstract
Abstract A stop motion for a strand-handling machine that includes a yoke which both guides the strand emerging from the machine and houses the stop motion system. Presence of a certain amount of strand in the yoke prevents excitation of the stop motion system. The yoke assumes the appearance of an inverted ''''U'''' and houses the stop motion system in one or both of the legs that depend downwardly from the top of the yoke. When too little or no strand passes through the yoke, the particular stop motion system being employed becomes excited and actuates the stop motion circuitry to shut down the machine or signal for corrective action. A strand monitor wheel is also provided in combination with the yoke to continuously monitor the strand being produced or handled by the machine and simultaneously to serve a stop motion function.
Inventors
- 👤 Clair W Schwalm
- 👤 Edwin A Snape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:08
CPC Classifications
D; D01; D01G; D01G31/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
55 words
Apparatus for controlling the operation of a strand-handling machine comprising: a. a yoke, said yoke comprising a base having two leg portions depending downwardly therefrom, said base and said leg portions defining a strand passage; b. strand-sensing means associated with said strand passage; and c. machine control means responsive to output from said strand-sensing means.
Claim 2
Dependent Claim
55 words
Apparatus for controlling the operation of a strand-handling machine comprising: a. a yoke, said yoke comprising a base having two leg portions depending downwardly therefrom, said base and said leg portions defining a strand passage; b. strand-sensing means associated with said strand passage; and c. machine control means responsive to output from said strand-sensing means.
Claim 3
Dependent Claim
35 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 1 wherein the surfaces of said yoke adjacent the strand passage are beveled and the yoke also serves as a strand guide.
Claim 4
Dependent Claim
31 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 1 wherein the strand-sensing means is integral with at least one of the leg portions of said yoke.
Claim 5
Dependent Claim
22 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 1 wherein the strand-sensing means is a stop motion.
Claim 6
Dependent Claim
23 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 4 wherein the stop motion is a photoelectric stop motion.
Claim 7
Dependent Claim
38 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 5 wherein a light-transmitting member is located in one leg of said yoke and a photocell is located in the other leg of said yoke.
Claim 8
Dependent Claim
23 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 5 wherein the light-transmitting member is an elongated lucite member.
Claim 9
Dependent Claim
23 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 6 wherein the light-transmitting member is an elongated plexiglass member.
Claim 10
Dependent Claim
76 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 1 wherein the machine control means comprises: a. a trigger circuit responsive to said strand-sensing means; b. a flip-flop responsive to said trigger circuit; c. a signal circuit responsive to said trigger circuit; d. a drive means circuit responsive to said flip-flop; and e. a restart circuit operatively associated with said drive means circuit and having a long time delay constant incorporated therein.
Claim 11
Dependent Claim
32 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 9 wherein the trigger circuit has a short time delay constant incorporated therein to compensate for normal strand flutter.
Claim 12
Dependent Claim
27 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 9 wherein the signal and drive means circuits are controlled by silicon controlled rectifiers.
Claim 13
Dependent Claim
18 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 1 comprising further strand-counting means.
Claim 14
Dependent Claim
48 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 12 wherein the strand-counting means comprises a rotatably mounted wheel having a strand-engaging periphery; said wheel having associated therewith proximity switch means and proximity switch-actuating means for creating counting pulses as said wheel is rotated.
Claim 15
Dependent Claim
23 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 13 wherein the strand-engaging periphery of said wheel is concave.
Claim 16
Dependent Claim
30 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 13 wherein the proximity switch is a reed switch and the proximity switch-actuating means is a magnet.
Claim 17
Dependent Claim
120 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 12 wherein the machine control means comprises: a. a trigger circuit responsive to said strand-sensing means; b. a flip-flop responsive to said trigger circuit; c. a signal circuit responsive to said trigger circuit; d. a drive means circuit responsive to said flip-flop and dictating the operational state of the drive means; e. a restart circuit operatively associated with said drive means circuit and having a long time delay constant incorporated therein; f. a pulse generating circuit responsive to said counting means, said pulse-generating circuit also having a stop motion circuit therein that is associated with said flip-flop; and g. a pulse-counting circuit responsive to said pulse-generating circuit.
Claim 18
Dependent Claim
32 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 9 wherein the drive means circuit comprises a low speed clutch drive circuit and a high-speed clutch drive circuit.
Claim 19
Dependent Claim
32 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 16 wherein the drive means circuit comprises a low speed clutch drive circuit and A high-speed clutch drive circuit.
Claim 20
Dependent Claim
38 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 17 wherein said high-speed clutch drive circuit also includes an inhibit circuit to delay operation of the high-speed clutch during start up of the machine.
Claim 21
Dependent Claim
14 words
Apparatus as defined in claim 1 wherein the strand-handling machine is a textile-carding machine.
Claim 22
Dependent Claim
152 words
Apparatus for controlling the operation of a strand-handling machine as defined in claim 1 wherein the strand-handling machine is a carding machine; the strand-sensing means comprises a photoelectric stop motion system, said photoelectric stop motion system comprising a light source, a light-conducting member integral with one leg of said yoke and a photocell integral with the other leg of said yoke, said light-conducting member being positioned so as to direct light across said strand passage onto said photocell during the absence of a predetermined amount of strand in said strand passage; and the machine control means comprises: a. a trigger circuit responsive to said photocell; b. a flip-flop responsive to said trigger circuit; c. a signal circuit responsive to said trigger circuit; d. a drive means circuit responsive to said flip-flop; and e. a restart circuit operatively associated with said drive means circuit and having a long time delay constant incorporated therein.
Claim 23
Dependent Claim
73 words
Apparatus for controlling the operation of a carding machine as defined in claim 21 further comprising a strand-counting means, said strand-counting means comprising a rotatably mounted wheel having a concave strand-engaging periphery, said wheel also having mounted thereon a magnet, and a reed switch mounted adjacent said wheel, and wherein the machine control means further comprises a pulse-generating circuit responsive to said reed switch and a pulse-counting circuit responsive to said pulse-generating circuit.
Claim 24
Dependent Claim
102 words
A control circuit for a strand-handling machine comprising: a. strand-sensing means; b. a trigger circuit responsive to actuation of said strand-sensing means, said trigger circuit having a short time delay incorporated therein to compensate for fluctuation of strand being sensed; c. a flip-flop responsive to said trigger circuit; d. a signal circuit responsive to said trigger circuit; e. a machine drive means circuit responsive to said flip-flop; and f. a restart circuit operatively associated with other of said circuitry, said restart circuit overriding said trigger circuit and inhibiting high-speed operation of drive means controlled by said drive means circuit during start up.
Claim 25
Dependent Claim
102 words
A control circuit for a strand-handling machine comprising: a. strand-sensing means; b. a trigger circuit responsive to actuation of said strand-sensing means, said trigger circuit having a short time delay incorporated therein to compensate for fluctuation of strand being sensed; c. a flip-flop responsive to said trigger circuit; d. a signal circuit responsive to said trigger circuit; e. a machine drive means circuit responsive to said flip-flop; and f. a restart circuit operatively associated with other of said circuitry, said restart circuit overriding said trigger circuit and inhibiting high-speed operation of drive means controlled by said drive means circuit during start up.
Claim 26
Dependent Claim
30 words
A control circuit for a strand-handling machine as defined in claim 23 wherein said drive means circuit comprises a low speed clutch drive circuit and a high-speed clutch drive circuit.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |