Automatic friction sash holder

Details Automatic friction sash holder Automatic friction sash holder

1984-03-26

1986-02-25

Downey, Kenneth

Movable or removable closures

With means mounting closure for reciprocation

Diverse or springy material guide or slide

49415, 16197, E05F 300

Patent

active

045718873

ABSTRACT:
A sash holder 10 automatically produces sash-holding friction in a resin jamb liner 12 in which the sash 11 runs. Jamb liner 12 has a track 20 in the sash plow region of each sash run 16 and 17, and track 20 is formed within parallel L-shaped edge guides 21. Sash holder 10 includes an upper component 25 connected to a balance spring 13 and a lower component 26 supporting sash 11 in its sash plow region. Overlapping surfaces 39 and 40 of components 25 and 26 form an interferring wedge that operates when the components move vertically to each other in response to spring force pulling upward against the sash weight. The interferring wedge can be arranged in several ways for pressing runners 27 and 28 against track guides 21 to produce sash-holding friction as a function of the vertical extent of the vertical movement of the overlapping surfaces.

REFERENCES:
patent: 2352171 (1944-06-01), Anfinson
patent: 2651535 (1953-09-01), Padjen
patent: 2913781 (1959-11-01), Czubachowski
patent: 3007194 (1961-11-01), Griswold
patent: 3407434 (1968-10-01), Scott
patent: 3466806 (1969-09-01), Teggelaar et al.
patent: 3499248 (1970-03-01), Baer
patent: 3501867 (1970-03-01), Scott
patent: 3991521 (1976-11-01), Crosby
patent: 4190930 (1980-03-01), Prosser

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