US3762866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile finishing processes
Assignee: Samuel Peg & Son Ltd
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Filing: 1972-02-03
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Granted: 1973-10-02
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Expires: 1992-02-03
Abstract
Abstract The invention sets out a method of and apparatus for finishing textiles, e.g., for dyeing, bleaching, scouring etc. It is particularly concerned with low liquor ratio processes, i.e., where the ratio of textile to liquor is such that all or substantially all of the liquor is absorbed during an impregnation step of the process. The impregnation step is followed by a heating step and this comprises moving the impregnated textile in a water vapour saturated atmosphere while heating it to a predetermined temperature. One machine for performing the method comprises a rotatable drum mounted in a casing; textile is tumbled within the drum, the casing defining a chamber within which a saturated atmosphere is maintained. Alternatively a loop of textile e.g. a length of carpet, may be arranged round a drive drum within a casing and may be moved by being driven around within the casing.
Inventors
- 👤 Cordell D Mc
- 👤 J Rayment
- 👤 C Parr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:12
CPC Classifications
D; D06; D06B; D06B19/00; D06B19/0088; D06B19/0094; D06B3/00; D06B3/10; D06B3/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
36 words
A low liquor ratio finishing process in accordance with claim 1, wherein the impregnated textile is moved by a tumbling action and the said atmosphere is circulated around and through the textile as it is tumbled.
Claim 2
Dependent Claim
56 words
A low liquor ratio finishing process in accordance with claim 1, in which the impregnated textile is in the form of a continuous loop, for example, a web or rope, and wherein the textile is moved by driving said loop within said atmosphere which is circulated around and through the textile as the latter is moved.
Claim 3
Dependent Claim
24 words
A low liquor ratio finishing process in accordance with claim 1, wherein the said atmosphere further comprises liquid additives in vapourised or atomised form.
Claim 4
Dependent Claim
27 words
A low liquor ratio finishing process in accordance with claim 1, wherein steam is injected into said atmosphere so as to saturate it to the desired extent.
Claim 5
Dependent Claim
48 words
A low liquor ratio finishing process in accordance with claim 1, wherein subsequent to reaching the predetermined finishing temperature, the quantity of water in the said atmosphere is reduced so as to permit a reduction of the liquor ratio thereby to enhance the activity of the finishing agent.
Claim 6
Dependent Claim
56 words
A low liquor ratio finishing process in accordance with claim 1, wherein the textile is heated to the predetermined temperature in a closed chamber and the heating step is terminated in response to an increase in pressure in said chamber consequent on boiling of the water content of the liquor with which the textile is impregnated.
Claim 7
Dependent Claim
69 words
A machine for performing the method according to claim 1, comprising, in combination, a casing defining a treatment chamber for the textile, means for moving the textile within said chamber, an external air circulating system comprising heating means and means for passing air heated by the heating means in re-circulation through the said chamber and means for adding liquid or liquid vapour into air circulated by the circulating system.
Claim 8
Dependent Claim
63 words
A machine in accordance with claim 8, wherein said textile moving means comprises a drum which is rotatably supported on a horizontal or inclined axis within the casing and into which textile can be placed and moved by rotation of the drum, and wherein damper means are provided in the circulating system for isolating the casing and hence the drum from said system.
Claim 9
Dependent Claim
39 words
A machine in accordance with claim 9, wherein the rotatable drum is perforated and the said means for adding liquid or liquid vapour is arranged to discharge into the casing between the latter and the exterior of the drum.
Claim 10
Dependent Claim
74 words
A machine in accordance with claim 8, wherein the said textile moving means is a rotatable drive drum journalled within the casing to drive a loop of textile in the form of a flat web or in rope form which is passed around the exterior of the said drum and wherein a roller cooperates with the drum so as to define a nip through which the textile is driven by rotation of the drum.
Claim 11
Dependent Claim
46 words
A machine in accordance with claim 11, wherein the roller is constituted by an inflatable tubular membEr supported between end eheeks the tubular member being inflated when the machine is in use so as to give a desired loading on textile driven through the said nip.
Claim 12
Dependent Claim
55 words
A machine in accordance with claim 11, wherein the drive drum is perforated and the circulating system is connected at its inlet to the interior of the drive drum so that, when the circulating system is in operation, the textile is held against the surface of the drive drum by the passage of air therethrough.
Claim 13
Dependent Claim
51 words
A machine in accordance with claim 8, further comprising heating means arranged to heat the casing which collects any condensation which occurs during a heating step at a rate which approximates with the rate at which the heaters of the circulating system is designed to raise the temperature of the textile.
Claim 14
Dependent Claim
67 words
A machine in accordance with claim 14, wherein the casing is so constructed as to be pressurisable and in that pressure sensing means are provided to sense the pressure within the chamber, the pressure sensing means being arranged to control the heating during the heating step so that heating is discontinued as soon as the water content of the liquor with which the textile is impregnated boils.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |