US3895355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern control system
Assignee: Shorell Ltd
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Filing: 1973-06-04
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Granted: 1975-07-15
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Expires: 1993-06-04
Abstract
Abstract The invention consists of a pattern control system for a textile machine such as one used to make tufted carpets, in which the colour or amount of yarn fed to each needle for each tuft insertion is to be individually controlled. Pattern information is recorded on a punched tape in binary form and fed to a magnetic disc memory such that each stitch in each pattern row, and the rows are recorded serially. During operation of the machine a start signal synchronised by the machine causes pattern information concerning a row of stitches determined by a counter to be fed serially from the disc to a temporary store which acts as a shift register, and on receipt of a command signal from the machine, delivers its information in parallel, if necessary via a decoder assembly, to the needles of the machine before their next tuft-inserting action. The control operation may determine either the colour of the tufts or their length, so that the carpet pattern finally produced may be either coloured or sculptured.
Inventors
- 👤 Stanley Shorrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:45
CPC Classifications
D; D05; D05C; D05C15/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/16; G05B19/18; G05B19/408
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
83 words
A pattern control system for use with a textile machine requiring discrete control of each of a number of yarn supply means for the needles of said machine, said system comprising a pattern memory device, an address circuit for said memory device, said circuit including a counter actuable by synchronisation means of said machine, read command means actuating said memory device to extract information therefrom; and means for feeding said information in parallel form to effect individual control of said yarn supply means.
Claim 2
Dependent Claim
83 words
A pattern control system for use with a textile machine requiring discrete control of each of a number of yarn supply means for the needles of said machine, said system comprising a pattern memory device, an address circuit for said memory device, said circuit including a counter actuable by synchronisation means of said machine, read command means actuating said memory device to extract information therefrom; and means for feeding said information in parallel form to effect individual control of said yarn supply means.
Claim 3
Dependent Claim
85 words
A system as recited in claim 1, wherein said information feeding means includes a temporary store and serial to parallel converter actuated by clock means for receiving a serial information output from said memory device and for delivering said information as a parallel output to control said yarn supply means; said system operating such that upon issuance of a read command from said synchronisation means, pre-stored serial information from an address on said memory is supplied to said temporary store and serial to parallel converter.
Claim 4
Dependent Claim
35 words
A system as recited in claim 2, including a decoder receiving said parallel output from said temporary store to parallel decode said output and subsequently delivering said decoded output to control said yarn supply means.
Claim 5
Dependent Claim
21 words
A system as recited in claim 2 in which said temporary store and serial to parallel converter is a shift register.
Claim 6
Dependent Claim
52 words
A system as recited in claim 2 including yarn feed means with power transmission means, wherein said control system is capable of varying in predetermined manner, the period of operation of said power transmission means at different cycles of operation of said textile machine so as to thereby regulate the yarn fed.
Claim 7
Dependent Claim
21 words
A textile machine including a control system as recited in claim 1 and having yarn supply means controllable by said system.
Claim 8
Dependent Claim
56 words
A machine as recited in claim 6 wherein said yarn supply means comprises a plurality of assemblies each controllable to cut off a tuft of yarn of desired colour from one of a plurality of yarns fed to a cutter assembly, and means for subsequently delivering said cut off tuft to a needle of said machine.
Claim 9
Dependent Claim
30 words
A machine as recited in claim 6, wherein said yarn supply means comprises a plurality of individually controllable feed means adapted to act on yarn to control the feed thereof.
Claim 10
Dependent Claim
35 words
A machine as recited in claim 6 wherein said yarn feed means includes individually controllable braking means acting on yarn supplied to the needles of the machine to selectively control the tension of said yarn.
Claim 11
Dependent Claim
43 words
A machine as recited in claim 6 in which said synchronisation means comprises phase reference means operated at different phases of the cycle of said machine, and sensors co-operating therewith to transmit signals to a resettable counter which gates information into the decoder.
Claim 12
Dependent Claim
83 words
A machine as recited in claim 10, in which saId phase reference means comprises a disc rotatable in synchronism with a shaft of said machine with phase indicator light control portions defined on said disc, and in which said sensors comprise light sources and photoelectric cells associated with said disc so as to transmit signals at different phases of the cycle of said machine upon rotation of said disc, said signals being transmitted to said resettable counter which gates information into said decoder.
Claim 13
Dependent Claim
46 words
A machine as recited in claim 10, including a sub-store between said memory device and said temporary store and serial to parallel converter said sub-store providing quick access of information, and means for loading said temporary store on receipt of a command signal from said machine.
Claim 14
Dependent Claim
29 words
A machine as recited in claim 8 wherein said feed means includes a pair of drive rollers and a power transmission means for each pair of said drive rollers.
Claim 15
Dependent Claim
28 words
A machine as recited in claim 13, in which said power transmission means each comprise a clutch for engaging and disengaging said pair of rollers from a drive.
Claim 16
Dependent Claim
17 words
A machine as recited in claim 6, wherein said pattern memory device is a magnetic disc store.
Claim 17
Dependent Claim
51 words
A machine as recited in claim 6, in which said yarn supply means includes a plurality of pairs of yarn feed rollers, each pair of rollers having a plurality of individually operable power transmission means adapted to drive one or both rollers at different speeds for different cycles of the machine.
Claim 18
Dependent Claim
22 words
A machine as recited in claim 16, in which said power transmission means each comprise an electromagnetic clutch connectable to drive means.
References Cited (Backward Citations)
US3741139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |