NIOSHTIC-2 Publications Search

Extensible brattice support system for mine face ventilation.

Authors
Divers EF; Lascola JC; Behers RG
Source
US Pat 4,494,894 1985 Jan; :1-5
NIOSHTIC No.
10004170
Abstract
A mobile support system for an underground mine brattice curtain which extends the ventilation control of a conventional line brattice. Three embodiments are disclosed for the support system utilizing different fulcrums. In the preferred embodiment, the support's fulcrum is made up of two identical spaced semicircular skid plates which engage the floor and rockably support a first inclined rigid beam. This first beam is pivotally attached to a cantilevered generally horizontal roof engaging upper support at its inby side and has a foot engaging section on its outby side. A second rigid beam extends upwardly from the first beam towards the outby side of the upper support and is pivotally attached to the first beam. The other end of the second beam is a free end which can engage an indexing member on the lower outby end of the upper support. An impervious air curtain depends from the upper support along its length and along with the upper support can be moved to engage the roof. The floor engaging fulcrums in the two other embodiments are either two spaced circular plates or a conventional roof jack.
Keywords
Underground mines; Ventilation; Mine shafts; Mining industry; Air flow
Publication Date
19850122
Document Type
Patent
Fiscal Year
1985
NIOSH Division
PRC
Source Name
United States Patent 4,494,894
State
PA
Page last reviewed: July 15, 2022
Content source: National Institute for Occupational Safety and Health Education and Information Division