Mine stopping and method of and jack for installing same

The method of installing a mine stopping comprising a plurality of elongate extensible panels adapted to extend vertically in side-by-side relation from the floor to the roof of a passageway in a mine,

• each panel comprising a first elongate member constituting a lower member of the panel adapted for engagement of its lower end with the floor of the passageway, and a second elongate member constituting an upper member of the panel adapted for engagement of its upper end with the roof of the passageway,
• each of said panel members being a sheet metal member of channel shape in cross section having a web and flanges at opposite sides of the web, each flange having an inturned portion at its outer edge extending generally parallel to the web and a lip at the inner edge of the inturned portion extending inwardly toward the web,
• one of said members having a telescoping sliding fit in the other with the webs of the members in engagement, the one member constituting the inner member and the other constituting the outer member of the panel, a plurality of the panels being adapted to be installed in a passageway with the side flanges of the outer members generally in engagement,
• the lips of the upper member of each panel terminating short of the upper end of the upper member and thereby providing a notch at the upper end of each lip,
• the upper member of each panel having a head at its upper end comprising a sheet metal member having a length less than the distance between the flanges of the upper member and greater than the distance between said lips,
• the head being generally of channel shape in transverse cross section having a web of a width slightly less than the distance between the web of the upper panel member and the edges of the lips fitting between the web of the upper member and the edges of the lips, a first flange extending up from the edge of the web of the head at the inside face of the web of the upper panel member, a second flange extending up from the other edge of the web having a first portion extending up on the inside edges of the lips, a second portion extending out from the upper edge of the first portion over the upper edges of the lips, and a third portion extending up from the outer edge of the second portion on the inside of said inturned portions, the head being secured in the upper panel member at its upper end with the ends of the head spaced from the side flanges of the upper panel member,
• the lower member of each panel having a foot at its lower end comprising a sheet metal member having a length less than the distance between the flanges of the lower member and greater than the distance between said lips,
• the foot being secured in the lower panel member at its lower end with the ends of the foot spaced from the side flanges of the lower panel member,
• and a sealing member pocketed in said head and extending up out of the upper end of said upper member for engagement with said roof,
• the spacing of the ends of the head from the side flanges of the upper panel member and the spacing of the ends of the foot from the side flanges of the lower panel member permitting the flanges to move toward one another with accompanying bowing of the webs of the panel members to preserve the integrity of the stopping on relative lateral movement of the ribs of the passageway toward one another with resultant compression of the stopping from the sides thereof,
• said method comprising engaging the base of a jack with the foot of a lower panel member and the end of an extensible member of the jack with the head of the respective upper panel member, and extending the extensible member of the jack to force the lower panel member down and the upper panel member up for compressing the sealing member pocketed in the head against the roof of the passageway for sealing engagement of said sealing member with the roof.

The method of installing in a mine a plurality of elongate extensible panels adapted to extend vertically in side-by-side relation from the floor to the roof of a passageway in a mine, each panel comprising a first elongate member constituting a lower member of the panel adapted for engagement of its lower end with the floor of the passageway, and a second elongate member constituting an upper member of the panel adapted for engagement of its upper end with the roof of the passageway, each of said panel members being a sheet metal member of channel shape in cross section having a web and flanges at opposite sides of the web, each flange having an inturned portion at its outer edge extending generally parallel to the web and a lip at the inner edge of the inturned portion extending inwardly toward the web, one of said members having a telescoping sliding fit in the other with the webs of the members in engagement, the one member constituting the inner member and the other constituting the outer member of the panel, a plurality of the panels being adapted to be installed in a passageway with the side flanges of the outer members generally in engagement, the upper member of each panel having a head at its upper end, the lower member of each panel having a foot at its lower end, said method comprising:

• engaging the base of a jack with the foot of a lower panel member and the end of an extensible member of the jack with the head of the respective upper panel member, and extending the extensible member of the jack to force the lower panel member down and the upper panel member up for sealing engagement of said upper panel member at its upper end with the roof.

A jack for installing a mine stopping comprising a plurality of elongate extensible panels adapted to extend vertically in side-by-side relation from the floor to the roof of a passageway in a mine,

• each panel comprising a first elongate member constituting a lower member of the panel adapted for engagement of its lower end with the floor of the passageway, and a second elongate member constituting an upper member of the panel adapted for engagement of its upper end with the roof of the passageway,
• each of said panel members being a sheet metal member of channel shape in cross section having a web and flanges at opposite sides of the web, each flange having an inturned portion at its outer edge extending generally parallel to the web and a lip at the inner edge of the inturned portion extending inwardly toward the web,
• one of said members having a telescoping sliding fit in the other with the webs of the members in engagement, the one member constituting the inner member and the other constituting the outer member of the panel, a plurality of the panels being adapted to be installed in a passageway with the side flanges of the outer members generally in engagement,
• the lips of the upper member of each panel terminating short of the upper end of the upper member and thereby providing a notch at the upper end of each lip,
• the upper member of each panel having a head at its upper end comprising a sheet metal member having a length less than the distance between the flanges of the upper member and greater than the distance between said lips,
• the head being generally of channel shape in transverse cross section having a web of a width slightly less than the distance between the web of the upper panel member and the edges of the lips fitting between the web of the upper member and the edges of the lips, a first flange extending up from the edge of the web of the head at the inside face of the web of the upper panel member, a second flange extending up from the other edge of the web having a first portion extending up on the inside edges of the lips, a second portion extending out from the upper edge of the first portion over the upper edges of the lips, and a third portion extending up from the outer edge of the second portion on the inside of said inturned portions, the head being secured in the upper panel member at its upper end with the ends of the head spaced from the side flanges of the upper panel member,
• the lower member of each panel having a foot at its lower end comprising a sheet metal member having a length less than the distance between the flanges of the lower member and greater than the distance between said lips,
• the foot being secured in the lower panel member at its lower end with the ends of the foot spaced from the side flanges of the lower panel member,
• and a sealing member pocketed in said head and extending up out of the upper end of said upper member for engagement with said roof,
• the spacing of the ends of the head from the side flanges of the upper panel member and the spacing of the ends of the foot from the side flanges of the lower panel member permitting the flanges to move toward one another with accompanying bowing of the webs of the panel members to preserve the integrity of the stopping on relative lateral movement of the ribs of the passageway toward one another with resultant compression of the stopping from the sides thereof,
• said jack having a base adapted to fit between the flanges of a lower panel member and engage the respective foot and an extensible member having a head at its upper end adapted to fit between the flanges of an upper panel member and engage the head of said upper panel member, said jack acting on extension of said extensible member to force the lower panel member down and the upper panel member up,
• the base having a part engaging the top and a part engaging the outside of said foot and the head on the extensible member has a part engaging the bottom and a part engaging the outside of the head of the upper panel member.

A jack for installing in a mine a plurality of elongate extensible panels adapted to extend vertical in side-by-side relation from the floor to the roof of a passageway in a mine, each panel comprising a first elongate member constituting a lower member of the panel adapted for engagement of its lower end with the floor of the passageway, and a second elongate member constituting an upper member of the panel adapted for engagement of its upper end with the roof of the passageway, each of said panel members being a sheet metal member of channel shape in cross section having a web and flanges at opposite sides of the web, each flange having an inturned portion at its outer edge extending generally parallel to the web and a lip at the inner edge of the inturned portion extending inwardly toward the web, one of said members having a telescoping sliding fit in the other with the webs of the members in engagement, the one member constituting the inner member and the other constituting the outer member of the panel, a plurality of the panels being adapted to be installed in a passageway with the side flanges of the outer members generally in engagement, the upper member of each panel having a head at its upper end, the lower member of each panel having a foot at its lower end, said jack comprising:

• a base adapted to fit between the flanges of a lower panel member and engage the respective foot and an extensible member having a head at its upper end adapted to fit between the flanges of an upper panel member and engage the head of said upper panel member, said jack acting on extension of said extensible member to force the lower panel member down and the upper panel member up,
• the base having a part engaging the top and a part engaging the outside of said foot and the head on the extensible member having a part engaging the bottom and a part engaging the outside of the head of the upper panel member.