Abstract: An extruded window jamb liner which includes at least one discontinuous opening of predetermined length and location for the sash balance connection, with the remainder of the wall in which such opening is formed left intact to provide a spring cover which is integral with the remainder of the jamb liner.

Abstract: An apparatus and process for forming a discontinuous slot, recess or other such opening of predetermined size and location in an extrusion section, such as a window jamb liner. The apparatus includes a cutting or shaping device mounted on or closely adjacent an extruding die, such device including a tip movable between a retracted position and an extended position. In the extended position, the tip engages the extrusion as the extrusion is formed and leaves the die, to thereby slit or otherwise remove a strip or other predetermined amount of material from the extrusion and thus form a recess or opening. As the cutter-like member is extended into or retracted from the extrusion, the tip of the cutterlike member shears the extrusion cross-wise to form an opening which may form an end of a slot and the length of time the tip remains in such contact with the extrusion determines the slots length.

Abstract: A jamb liner is provided for a window assembly including a frame and a sash operably mounted in the frame by use of the jamb liner. The jamb liner includes a sash-engaging portion having at least one pair of opposing wall sections and a bottom wall section defining a channel. An air-sealing portion extends from the opposing wall section for sealingly engaging the frame to prevent undesired flow of air between the jamb liner and the window frame. The air-sealing portion includes a root wall section that extends at an angle to one of the opposing wall sections, a resilient wall section that extends from the root wall section, and a frame-engaging wall section that extends from the resilient wall section.

Abstract: An improved window assembly of the type having sliding, pivoting sashes, includes a window frame having a pair of jambs, a jamb liner secured to each of the jambs, a sash which is slidable within the jambs, and a frictional positioner shoe disposed within a channel in the jamb liner. The frictional positioner shoe provides frictional engagement between the sash and the jamb liners to securely hold the window in a raised position, and providing additional restraint against vertical movement of the shoe and rotational movement of the sash when it is tilted away from the plane of the window opening. Also provided is an improved window of the type having sliding, pivoting sashes, which include an elongate slidable member disposed within a channel in the jamb liner, and a rotatable member having an integrally attached brake member disposed within a bore passing through the elongate slidable member.

Abstract: A jamb liner is provided for a window assembly including a frame and a sash operably mounted in the frame by use of the jamb liner. The jamb liner includes a sash-engaging portion having at least one pair of opposing wall sections and a bottom wall section defining a channel. An air-sealing portion extends from the opposing wall sections for sealingly engaging the frame to prevent undesired flow of air between the jamb liner and the window frame. The air-sealing portion includes a root wall section that extends at an angle to one of the opposing wall sections, a resilient wall section that extends from the root wall section, and a frame-engaging wall section that extends from the resilient wall section. In one form, a pair of the resilient wall sections are provided for supporting the frame-engaging wall section, one extending from each opposing wall section in a bellows-like arrangement.

Abstract: A sash balance apparatus for vertically slidable window installations, in which a friction shoe is disposed in a channel formed by a jamb liner extending along each side of the slidable sash and a connecting member extends between the sash and the friction shoe in a manner such that the weight of the sash when applied to the shoe tends to pivot the latter at least slightly within the jamb liner channel and thereby bring predetermined surfaces of the shoe into frictional contact with corresponding surfaces of the jamb liner channel, preferably including elongated rib-like intermediate walls which extend into the channel from its sides. The channel thus provides a plurality of different longitudinally-extending friction surfaces which may be selectably engaged by the friction shoe as a function of its particular configuration, dimensions, and the degree of tilt introduced by the applied weight of the sash.

Abstract: A sash balance apparatus for vertically slidable window installations, in which a friction shoe is disposed in a channel formed by a jamb liner extending along each side of the slidable sash and a connecting member extends between the sash and the friction shoe in a manner such that the weight of the sash when applied to the shoe tends to pivot the latter at least slightly within the jamb liner channel and thereby bring predetermined surfaces of the shoe into frictional contact with corresponding surfaces of the jamb liner channel, preferably including elongated rib-like intermediate walls which extend into the channel from its sides. The channel thus provides a plurality of different longitudinally-extending friction surfaces which may be selectably engaged by the friction shoe as a function of its particular configuration, dimensions, and the degree of tilt introduced by the applied weight of the sash.

Abstract: A sash balance apparatus for vertically slidable window installations, in which a friction shoe is disposed in a channel formed by a jamb liner extending along each side of the slidable sash and a connecting member extends between the sash and the friction shoe in a manner such that the weight of the sash when applied to the shoe tends to pivot the latter at least slightly within the jamb liner channel and thereby bring predetermined surfaces of the shoe into frictional contact with corresponding surfaces of the jamb liner channel, preferably including elongated rib-like intermediate walls which extend into the channel from its sides. The channel thus provides a plurality of different longitudinally-extending friction surfaces which may be selectably engaged by the friction shoe as a function of its particular configuration, dimensions, and the degree of tilt introduced by the applied weight of the sash.

Abstract: A jamb liner, or facing member, for movably mounting windows along their side edges in channels or runs, in which a concealed elongated chamber is provided for a coil spring or the like used as part of the balance or positioner mechanism by which the window is supported in different positions along the length of the jamb as it is opened and closed during use. Preferably, such concealed chamber includes an elongated wall which projects outwardly from the jamb liner and has an arcuate or other angularly-configured cross-section, such that it presents a generally closed appearance when viewed from a position near the window. Such chamber-concealing wall defines an elongated opening through which the balance device may communicate for access by the window sash, for supporting the latter and positioning it.

Abstract: The present invention is directed to a tilt lock jambliner and slidable block used with windows that both slide vertically and tilt inwardly. The window sash slides within the jambliner channel of a window frame. A pivot bar is fixedly attached to the window and is receivable within an opening in the slidable block. The slidable block is slidably mounted within the jambliner channel. The slidable block has a plurality of projections on one side which alternatingly engage a projecting fin of the jambliner channel. The projections cause the projecting fin to assume a wave shape. The interaction between the projecting fin and the lowermost projections creates constant running friction. Running friction is adjustable using a threaded friction adjusting screw mounted in the slidable block. The uppermost projections form a V and have sharp locking corners.

Abstract: The hammer mill for treating scrap metal including a rotary hammer means for delivering impact blows to scrap metal is shown. Discharge grates are provided for disposing of the scrap metal through discharge outlets for the hammer mill. The rotor is a disc type with rotating hammers located on pins extending through the discs. A plurality of caps are circumferentially located around each disc and attached thereto for protecting the disc against excessive wear. A dual feed roller feeds the scrap metal to the hammer mill to be shredded.