Advancing support
AssigneeCharbonnages de France
InventorAlfred Valantin
Life of this patent
Estimating the term…
Abstract
An advancing support for providing a continuous propping, particularly for providing a continuous propping of mine galleries or like passageways, comprising at least two carriages for articulated tracks, each of said carriages including a beam having rounded ends and an articulated track closely surrounding the beam mounted for sliding friction on the beam, each of said beams being divided into spaced-apart longitudinal elements, a connecting element pivotally attached to each of said longitudinal elements for joining them together, said carriages being disposed one above the other to be applied respectively against the floor and roof of a gallery; at least one jack attached to the connecting element of the upper carriage and the connecting element of the lower carriage thereby joining said carriages together.
Claims12
An advancing support for providing a continuous propping and comprising at least two carriages for articulated tracks, each of said carriages including a beam having rounded ends and an articulated track closely surrounding the beam mounted for sliding friction on the beam, each of said carriages extending along a longitudinal axis, each beam having at least two longitudinal elements spaced-apart in end to end relation along said longitudinal axis, a connecting element pivotally attached to each of said longitudinal elements of a said beam for joining said longitudinal elements together, said carriages being disposed one above the other to be applied respectively against the floor and roof of a gallery;
- at least one jack attached to the connecting element of the upper carriage and the connecting element of the lower carriage thereby joining said carriages together.
An advancing support for providing a continuous propping and comprising at least two carriages for articulated tracks, each of said carriages including a beam having rounded ends and an articulated track closely surrounding the beam mounted for sliding friction on the beam, each of said beams being divided into spaced-apart elements, a bogie pivotally attached to each of said longitudinal elements by pivoted joints having a horizontal transverse axis for joining said longitudinal elements together, said carriages being disposed one above the other to be applied respectively against the floor and roof of a gallery;
- at least one jack attached to the connecting element of the upper carriage and the connecting element of the lower carriage thereby joining said carriages together.
Dependencies are inferred from the claim text.