A roller for a window or door slidably mounted on a track is disclosed. The roller comprises a housing having first and second opposing walls and a shelf having a convex outer surface and extending between the first and second walls. A belt encircles the shelf. The belt has an inner surface having a low coefficient of friction for sliding engagement with the convex surface of the shelf. The belt further has an outer surface having a high coefficient of friction adapted for non-sliding engagement...

The invention includes an extruded retainer member which is permanently affixed to the casing of an existing window and which has a ridge running its length onto which is snapped the channel of an extruded frame member, Forming a weather-tight seal. The frame member has an additional slot for securing window glazing within the frame. The ridge on the retainer member has a neck, a bulb and a tip. The channel on the frame member is formed by two flanges which are flexible to an extent and shaped s...

A method of forming contact windows in an insulating layer is disclosed. The contact windows extend down to an underlying metal layer which is formed under the insulating layer. The method comprises the steps of: forming an etching mask layer having openings for defining contact window regions of the insulating layer on the insulating layer; and performing an etching process using an etching gas to which a gas containing nitrogen atoms has been added, thereby etching away the contact window regi...

This invention involves a novel silk screen, a novel process of making it, and a novel use in the technology of heating flat bodies such as automobile and factory windows. The new screen is characterized by slits of differential width, depth, or both which permit the deposit of lines of differential section. This has a special significance when the lines are composed of electrical conductors of resistance type of which the resistivity of a part is determined by its section. The process involves ...

A device for automatically closing windows with vertically sliding sashes in the case of fire comprises at least one spring compensator (9) removably engaged with a lateral upright (3) of the cased frame (2) of the window and having its extractable core (14) connected to the sliding sash (1), a cord (15) fixed at one end to said compensator (9), fixed at its other end to said cased frame (2) and passing about an idler pulley (16) fixed to said cased frame (2) in a position above the two ends of ...

Wood cladding for mounting on the inner surface of nonwooden windows having common interior cross sections in which the sash is mounted on the frame from the outside of the window is disclosed. The wood cladding includes at least two sections of wood shaped to conform to the interior surface of the window. Each wood section has a uniform cross section along its entire length and is attachable to either the frame or sash of the window without altering the length and width dimensions of the window...

A window washing assembly comprising an elongated spray bar suspended from a cable or the like along the side of a building by way of a pulley located at the roof of the building, and a ground control unit including a motorized cable reel for selectively positioning the spray bar by way of the support cable, and controls for selectively controlling the mixture of water and cleaning solution supplied to the spray bar by way of a delivery hose extending between the ground unit and the spray bar.

A closure mechanism for louver windows utilizing a reciprocating closure actuation bar and a plurality of elongated springs interconnecting it with the several individually pivoted sections of the window, the springs contributing elastic yieldability between the bar and the window sections by lateral bending, such that the springs for the section or sections which reach closed position first, thereafter undergo lateral bending as subsequent window sections complete their closure movements, and t...

A multiple-glazed unit provided with breather apparatus comprising a capillary tube connected to an elongated column of desiccant material.

A double-hung window having a casing with side boards inwardly delimiting sash pockets is replaced by first stripping the casing of the sashes, then filling the sash pockets with fluent particulate insulation, and finally fitting a replacement window into the casing. These holes can be the ones left by removal of the sash-cord pulleys, or can be specially made. The insulation is cellulose and is filled into the pockets by being pumped thereinto. Furthermore on stripping of the sashes same are se...