Prop headboard

Details Prop headboard Prop headboard

1994-09-22

1997-08-19

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

248357, E02D 302, E02D 500, E02D 1700, E02D 2900

Patent

active

056580991

ABSTRACT:
The prop headboard is used to support an inflatable grout bag on the head of an elongate prop. The headboard has a timber frame which presents a planar support surface suitable for supporting the inflatable grout bag. Bag-retaining flaps made of flexible fabric material extend from opposite edges of the headboard. These flaps are folded over the grout bag and serve to centralise it on the headboard and to restrain it from rolling out sideways during inflation and thereafter. The invention also concerns a prop system in which the headboard is used, and a method of supporting a hanging wall in a mine working.

REFERENCES:
patent: 931466 (1909-08-01), Nellen
patent: 1528034 (1925-03-01), Thielmann
patent: 1946720 (1934-02-01), Stearns
patent: 2190556 (1940-02-01), Wiebecke et al.
patent: 3703269 (1972-11-01), Meriz
patent: 4004771 (1977-01-01), Plevak et al.
patent: 4120164 (1978-10-01), Tomlin
patent: 4465405 (1984-08-01), Durrfeld
patent: 4773792 (1988-09-01), Landers
patent: 5149228 (1992-09-01), Pienaar et al.
patent: 5186430 (1993-02-01), Ellithrope
patent: 5288178 (1994-02-01), Pienaar
HL&H Mining Timber 1992; Propsetter.TM. Assembly Procedure; (1992) (2 p.).

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