A shallow two inch deep double hung window which is sufficiently water and wind resistant to replace jalousies, which can be used in cabana walls and which fits screen porches, utilizing existing screening. Block and tackle sash balance counter balance the weight of individual panels and provide a lateral resilient action to maintain panels in position. A double action leaf spring stop for each panel selectively disengages the sash balances therefrom so that by moving a panel laterally it is removable. Window and panel frame members consist of aluminum extrusions which facilitate construction of custom windows made to selected sizes. Inside or outside flanges for securing the window to the wall structure are optionally provided.
RELATED APPLICATIONS
This is a continuation of application Ser. No. 496,937 filed May 23, 1983, which is a continuation of application Ser. No. 217,987, filed Dec. 18, 1980, now U.S. Pat. No. 4,420,907 which issued Dec. 20, 1983, which is a continuation-in-part of application Ser. No. 216,813, filed Dec. 16, 1980, now abandoned, which is a continuation of application Ser. No. 923,344, filed July 10, 1978, now U.S. Pat. No. 4,238,907 which issued Dec. 16, 1980, which is a continuation-in-part of application Ser. No. 758,866, filed Jan. 12, 1977, now abandoned.
Window vent stop devices are provided by this invention which include housing and stop block portions in which the stop block is pivotally mounted within the housing to provide a first position for permitting at least one of the sashes of a window to slide freely by the other, and a second position which causes the stop block to impinge against the other sashes to limit the sliding movement of the sashes. The stop block includes an integral spring arm to assist it in moving from the first and second positions.
A compound counterbalance system for window sashes and the like, comprising: a biasing mechanism for easing operation of a window sash and the like, the biasing mechanism being movable at an inherently variable of force; a first biasing force transmission, connected intermediately of the window sash and the like and the biasing mechanism, for increasing the effective range of movement of the biasing mechanism; and, a second biasing force transmission connected intermediately of the first biasing force transmission and the biasing mechanism, the second biasing force transmission having a variable rate of operation predetermined to automatically compensate for the variability of the biasing mechanism, to provide substantial constancy of the biasing force. The biasing mechanism preferably comprises a linearly extensible and contractible spring. In one embodiment, both the first and second biasing force transmissions comprise pulley and cable systems. In another embodiment, only the second biasing force transmission comprises a cable and pulley system and the first biasing force transmission comprises a reduction gear assembly. In each embodiment, the variable rate of the second biasing force transmission comprises a generally conical, spiral-grooved pulley and a cable means affixed at one end to the pulley, affixed at the other end to the biasing mechanism and adapted to wind into and out of the groove.
A storm door includes a frame with opposing side rails, top and bottom rails, and a center mullion. A kick plate is mounted between the center mullion and bottom rail, and a stationary screen sash and stationary window panel are mounted within the same vertical plane between the center mullion and top rail. A window sash is slidably mounted between a pair of jamb liners on the side rails between the center mullion and top rail, and spaced inwardly of the screen sash and stationary window panel. Counterbalance assemblies are connected to the window sash and located between the jamb liners and side rails to permit retention of the window sash at any position between an upper position contacting the top rail, and the lower position contacting the center mullion.
Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash.
Pulleys of a block and tackle window balance include hub steps that interact with other components to reduce the introduction of dirt and dust particles into areas vulnerable to wear. The hub steps of some of the pulleys are recesses formed about the axial bores of the pulleys that mate with protrusions on an axle and a washer. The hub steps of other pulleys are protrusions that abut a support plate and heads of rivets that act as axles. The hub steps allow inverse mounting of the window balance so that the balance can be mounted in a shoe channel for movement with a sash of the window, attached to the sash shoe, and the cord can be attached to the jamb or frame, thus increasing sash travel.
