Textiles: spinning – twisting – and twining – Apparatus and processes – Splicing
Patent
1997-08-29
1999-10-26
Stryjewski, William
Textiles: spinning, twisting, and twining
Apparatus and processes
Splicing
57 25, 57 26, 57202, 87 13, 289 15, D01H 1700
Patent
active
059706970
ABSTRACT:
A rope or line having a permanent loop of fixed diameter spliced in each end thereof provides for the suspension of innumerable articles in various industries, but is particularly well suited for use in underground mining, where it may be used to support continuous miner machine cables, electric, pneumatic, and hydraulic lines, air ventilation ducts, etc., above the floor of the mine drift. The line is preferably formed of a braided synthetic fiber which has been treated to provide flame retardant properties and which is also electrically non-conductive. Treated, braided polypropylene is a suitable material for the present double looped line. The closed loops are formed by passing the first end of the line diametrically through its opposite portion, and then coaxially through that same portion and diametrically through the portion captured within the hollow braided core to secure the first end therein and to form a closed loop. The second end portion of the line is worked in an identical manner to form an essentially identical second loop. This construction results in a braided line in which the spliced portions are pulled more tightly and securely together when tension is applied to the two opposite loops, thus producing more secure loops which cannot slip when tension is applied. The double looped line may also be provided with bright, contrasting colors for better visibility in areas of low light, as in the mining environment.
REFERENCES:
patent: 330087 (1885-11-01), Binns
patent: 2600395 (1952-06-01), Domoj et al.
patent: 4962929 (1990-10-01), Melton, Jr.
patent: 5062344 (1991-11-01), Gerker
patent: 5540703 (1996-07-01), Barker, Jr. et al.
Jacobs Mark W.
Jacobs Tanya S.
Jacobs William J. B.
Litman Richard C.
Stryjewski William
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