Dual sash window assembly with weathertight sealing means

Claim 2

In a dual sash window assembly comprising a supporting frame including a header and a sill and jambs, and a pair of horizontally movable sashes mounted within said supporting frame in parallel spaced planes, each of said sashes including top and bottom horizontal members and side vertical members, the combination thereof with: means defining outwardly open channels along said top and bottom horizontal members of each sash and along one of said side vertical members of each sash which is to be held against one of said jambs of said supporting frame when the sash is in a closed position; a plurality of vertical rolls rotatably supported in selected positions internally of said channels; a plurality of flanges projecting inwardly from said supporting frame and intruding into said channels, respectively, when said sashes are in their closed positions; a plurality of raised roll seats formed on said flanges in such positions that said rolls ride on said roll seats, respectively, when said sashes are moved to their closed positions, whereby said sashes undergo lateral displacement relative to said supporting frame; and a plurality of sealing strips arranged internally of said channels whereby said sealing strips become pressed against said flanges, respectively, upon lateral displacement of said sashes in their closed positions.

Claim 3

The dual sash window assembly as recited in claim 1, wherein at least one of said rolls in positioned in each of said channels of each sash.

Claim 4

The dual sash window assembly as recited in claim 1, wherein said sashes undergo displacement in the same lateral direction with respect to said supporting frame in their closed positions.

Claim 5

In a dual sash window assembly comprising a supporting frame including a header and a sill and jambs, and a pair of horizontally movable sashes mounted within said supporting frame in parallel spaced planes, each of said sashes including top and bottom horizontal members and side vertical members, said side vertical members consisting of a first side vertical member to be held against one of said jambs of said supporting frame when the sash is in a closed position and a second side vertical member to meet the corresponding side vertical member of the other sash when the two sashes are in their closed positions, the combination thereof with: means defining outwardly open channels along said top and bottom horizontal members and said first side vertical member of each sash; a plurality of vertical rolls rotatably supported in selected positions internally of said channels; a plurality of flanges projecting inwardly from said supporting frame and intruding into said channels, respectively, when said sashes are in their closed positions; a plurality of raised roll seats formed on said flanges in such positions that said rolls ride on said roll seats, respectively, when said sashes are moved to their closed positions; said rolls and said roll seats on each of said sashes being so arranged that said sashes undergo lateral displacement toward each other relative to said supporting frame when said sashes are moved to their closed positions; first sealing strips arranged along said header and sill of said supporting frame in the middle of the transverse dimension thereof whereby said top and bottom horizontal members of said sashes become pressed against said first sealing strips, respectively, upon lateral displacement of said sashes in their closed positions; a second sealing strip arranged along said second side vertical member of one of said sashes whereby said second side vertical member of the other sash becomes pressed against said second sealing strip upon lateral displacement of said sashes in their closed positions; and third sealing strips arranged internally of said channels along said first side vertical members of said sashes whereby said third sealing strips become pressed against the respective flanges intruding into the respective channels along said first side vertical members upon lateral displacement of said sashes in their closed positions.

Claim 6

In a dual sash window assembly comprising a supporting frame including a header and a sill and jambs, and a pair of horizontally movable sashes mounted within said supporting frame in parallel spaced planes, each of said sashes including top and bottom horizontal members and side vertical members, said side vertical members consisting of a first side vertical member to be held against one of said jambs of said supporting frame when the sash is in a closed position and a second side vertical member to meet the corresponding side vertical member of the other sash when the two sashes are in their closed positions, the combination thereof with: means defining outwardly open channels along said top and bottom horizontal members and said first side vertical member of each sash; a plurality of vertical rolls rotatably supported in selected positions internally of said channels; a plurality of flanges projecting inwardly from said supporting frame and intruding into said channels, respectively, when said sashes are in their closed positions; a plurality of raised roll seats formed on said flanges in such positions that said rolls ride on said roll seats, respectively, when said sashes are moved to their closed positions; said rolls and said roll seats on each of said sashes being so arranged that said sashes undergo lateral displacement toward each other relative to said supporting frame when said sashes are moved to their closed positions; first sealing strips arranged along said header and sill of said supporting frame in the middle of the transverse dimension thereof whereby said top and bottom horizontal members of said sashes become pressed against said first sealing strips, respectively, upon lateral displacement of said sashes in their closed positions; a second sealing strip arranged along said second side vertical member of one of said sashes whereby said second side vertical member of the other sash becomes pressed against said second sealing strip upon lateral displacement of said sashes in their closed positions; and third sealing strips arranged internally of said channels along said first side vertical members of said sashes whereby said third sealing strips become pressed against the respective flanges intruding into the respective channels along said first side vertical members upon lateral displacement of said sashes in their closed positions.

Claim 7

The dual sash window assembly as recited in claim 4, wherein at least one of said rolls is positioned in each of said channels of each sash, and wherein those of said rolls positioned in the channels along said top and bottom horizontal members of each sash are adjacent the lapping portions of said sashes.

Claim 8

The dual sash window assembly as recited in claim 4, further including a pair of interlockingly engageable flanges arranged along said second side vertical members of said sashes, respectively, said second sealing strip being pressed against one of said flanges upon lateral displacement of said sashes in their closed positions.