US3145433A - Weatherstrip assembly for double hung windows - Google Patents

Weatherstrip assembly for double hung windows Download PDF

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US3145433A
US3145433A US199835A US19983562A US3145433A US 3145433 A US3145433 A US 3145433A US 199835 A US199835 A US 199835A US 19983562 A US19983562 A US 19983562A US 3145433 A US3145433 A US 3145433A
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plastic member
metal members
assembly
window
grooves
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US199835A
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Merlin K Jones
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Curtis Companies Inc
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Curtis Companies Inc
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B3/26347—Frames with special provision for insulation specially adapted for sliding doors or windows
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/42—Sliding wings; Details of frames with respect to guiding
    • E06B3/44—Vertically-sliding wings
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/42—Sliding wings; Details of frames with respect to guiding
    • E06B3/44—Vertically-sliding wings
    • E06B2003/4438—Vertically-sliding wings characterised by the material used for the frames
    • E06B2003/4446—Wood

Definitions

  • One object of the invention is to provide a combined weatherstrip and guide assembly for double hung windows wherein elongated members in the form of metal extrusions are provided in pairs at each side of the window frame, each pair being connected together by an elongated member in the form of a hard plastic extrusion so that the plastic provides a thermal barrier between the metal extrusion on the inside of the house and the one on the outside to prevent frosting and condensation or sweating due to temperature differential, and to minimize loss of heat from inside ⁇ the house by conduction through the metal extrusions.
  • Another object is to provide metal and plastic extrusions which may be quickly and readily assembled together to form a rigid weatherstrip member without the necessity of using bolts, rivets or other fastening means, the extrusions being provided with pivot groove and bead arrangements that cooperate with snap-in groove and bead arrangements to accomplish such assembly.
  • Still another object is to provide the metal extrusions of such design that they may enclose counter-balance springs for the sashes, and may retain compression springs for taking up play between the two jambs of the window frame and the intervening extrusions and sashes.
  • a further object is to provide the extrusions so designed that sealing gaskets may cooperate between them and the side jambs of the window frame for weathersealing the backs of the eXtrusions with respect to the jambs.
  • Still a further object is to provide a modified form of plastic extrusion with which a special type of soft plastic tube may cooperate to serve as a weather seal between the weatherstrip assembly and the side jamb of the window.
  • An additional object is to provide mounting clips for the extrusions which are readily attachable to the side jambs and into which the extrusions may be snapped and will thereafter remain in position when the sashes of the window are removed from between the weatherstrip assemblies.
  • my invention consists in the construction, arrangement and combination of the various parts of my weatherstrip assembly for double hung windows, whereby the objects above contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in detail on the accompanying drawing, wherein:
  • FIG. l is a horizontal sectional view through a double hung window frame showing two of my weatherstrip assemblies and a pair of sashes mounted therein.
  • FIG. 2 is a perspective view of one of the mounting clips for the weatherstrip assembly.
  • FIG. 3 is an end view of a metal extrusion, two of which are used in my weatherstrip assembly.
  • FIG. 4 is an end view of a plastic extrusion, one of which is used in my weatherstrip assembly.
  • FIG. 5 is a view similar to a portion of FIG. l show ing a modified form of plastic extrusion and a gasket tube in the form of a soft plastic extrusion associated therewith.
  • FIG. 6 is an end View of the modified form of plastic extrusion of FIG. 5.
  • FIG. 7 is an end view of the soft plastic gasket tube in the shape it normally assumes.
  • FIG. 8 is an end View of a metal extrusion and the plastic extrusion of my weatherstrip assembly during an initial position of the parts during assembly
  • FIG. 9 is a similar view showing the position of the parts when the assembly is nearly completed.
  • the weatherstrip assembly is seated against a spring mounting clip 19.
  • the weatherstrip assembly at the left hand side of the window is provided with several vertically spaced compression springs 7.2 that are mounted in grooves 30 and 32 of the extrusions A. These springs engage against a mounting clip Z6 similar to the mounting clip i9.
  • the clip 19 as shown in FIG. 2 is channelshaped, having resilient flanges 24 terminating in hooked marginal edges 26. Prongs 2S are struck out of the web or back of the clip to be driven into the side jambs 10 in lieu of nails, thus simplifying the assembly procedure of the clips 19 and Ztl with respect to the jambs.
  • Several of the clips are provided vertically spaced along the jambs.
  • the usual blind stops 6,2 and inside stops 64 are shown installed on the side jambs lil of FIGS. l and 5.
  • the weatherstrip assemblies may be inserted into the mounting clips 19 and 29 by springing the anges 24 apart and thereafter the hooked marginal edges 26 normally retain the assemblies in mounted position in the clips.
  • the clip 19 is not as deep as the clip Ztl in order to hold the weatherstrip assembly at the right side of the window against the back of the clip 19 while the assembly at the left side is spaced therefrom to permit floating action as dictated by the compression springs 22 and the sashes 12 and 14 intervening between the two extrusions B.
  • the spring clips -19 and 20 permit removal of the weatherstrip assemblies if desired vfor painting of the wood parts of the window frame.
  • the eXtrusions A are provided with longitudinally eX- tending, open spring chanels 34 in which counterbalance springs 36 for the sashes 12 and 14 are mounted. If desired plastic or metal spring covers 38 may be sprung into opposite grooves 40 of the extrusions A to cover the counterbalance springs 36 throughout the portions of their travel where such covers will not interfere with the connection from the bottom of the spring to the sash.
  • Sealing gaskets 4@ and 42 of sponge rubber, foamed plastic or the like may be provided for weather-sealing the space between the weatherstrip assemblies and the jambs.
  • the grooves 16 and beads 18 form contact surfaces of considerable extent to eifect a weather seal and provide a smoothly operating guide assembly for the sashes during their sliding motion.
  • the plastic-to-wood engagement is excellent for slideways without excess friction yet sufcient friction under the action of the springs 22 to hold the sashes at all adjusted positions where they are not substantially counterbalanced by the springs 35. Uniform sliding action is also continuously had without lubricant of any kind.
  • FIGS. 5, 6 and 7 I show a modification wherein the hard plastic extrusion B has an additional channel 44 for mounting an elongated soft plastic tube-like member C.
  • the member C may be in the form of an extrusion trusions C thus eliminate the necessity of providing sealing gaskets such as shown at 4t) and 42 in FIG. l, and is a more satisfactory installation. Foamed plastic passes air if soft, and if of the closed-cell type it is too diicult to compress, but a soft plastic tube is not subject to these shortcomings.
  • extrusions A and 'the extrusion B have designed the extrusions A with pivot grooves 43 to receive a pair of pivot beads 50 of the extrusion B.
  • the extrusion B is provided with a pair of snap-in grooves 52 and each extrusion A is provided with a snap-in bead Sii.
  • Leading to the groove 52 is a surface S6 which as shown in FIG.
  • any suitable metal such as aluminum or the like may be used for the extrusion A, and any suitable hard plastic such as vinyl, polystyrene, nylon or polypropylene may be used for the extrusion B.
  • the extrusion C may be made of ilexible vinyl or polyethylene for distortion to the shape shown in FIG. 5 to accomplish eiecting sealing.
  • the design of my weatherstrip assembly is such that the extrusions A may be identical in shape and may be of rolled section instead of extrusions if desired.
  • the web 60 of the extrusion B is in tension and the angle of the surface 56 is important as it permits assembly as shown in FIGS. 8 and 9 and locks the weatherstrip assembly in assembled relation after the bead 54 rides smoothly up the incline.
  • the parts A and B form a rigid assembly, the parts of which are almost impossible to separate from each other except by longitudinal movement of one relative to the other. Once assembled however and mounted in a window opening it is seldom necessary to disassemble them except for possible replacement of broken parts.
  • a weatherstrip assembly for a double hung window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said plastic member having a pair of guide beads longitudinally thereof and rigidly spaced apart relative t0 each other throughout their length, adjacent window sashes having cooperating guide grooves receiving said guide beads, and means biasing said beads toward said grooves.
  • a weatherstrip assembly for a double hung window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together to form.
  • a rigid weatherstrip member with the plastic member forming a thermal barrier between the two metal members, said plastic member and a pair of adjacent window sashes having cooperating guide portions frictionally engaging each other, said guide portions of said plastic member being rigidly spaced relative to each other, there being one such weatherstrip as sembly at each side of the window frame, and means resiliently biasing at least one of said assemblies away from an adjacent side jamb.
  • a Weatherstrip assembly for a double hung Window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that together they form a rigid Weatherstrip member and the plastic member forms a thermal barrier between the two metal members, said plastic member and the pair of adjacent window sashes having cooperating bead-and-groove guide portions wherein said portions are rigidly spaced apart throughout their length.
  • a weatherstrip assembly for a double hung window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said plastic member and a pair of adjacent window sashes having cooperating bead-and-groove guide portions wherein said portions are rigidly spaced apart and parallel throughout their length, there being one such Weatherstrip assembly at each side of the window frame, and means resiliently biasing at least one of said assemblies away from an adjacent side jamb.
  • a Weatherstrip assembly for a double hung window having a window frame and sashes therein comprising a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having counterbalance spring chan nels extending longitudinally thereof, said channels being open and having opposite grooves to receive counterbalance spring covers, and channel-shaped spring clips for attachment to the side jams of the window frame to receive said weatherstrip assembly and having retainer anges coacting with said metal members to retain them in mounted position, said plastic member having a pair of guide beads to coact with guide grooves of the window sashes.
  • a weatherstrip assembly for a double hung window having a window frame and sashes therein comprising a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having counterbalance spring channels extending longitudinally thereof, and channel-shaped spring clips for attachment to the side jambs of the Window frame to receive said weatherstrip assembly and having retainer anges coacting with said metal members to normally retain them mounted in said spring clips, said plastic member having a pair of guide beads to coact with guide grooves of the Window sashes.
  • a Weatherstrip assembly for a double hung Window having a frame comprising a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having counterbalance spring channels extending longitudinally thereof, and channel-shaped spring clips for attachment to the side jambs of the window to receive said weatherstrip assembly and having retainer flanges coacting with said metal members to normally retain them in their mounted position.
  • a weatherstrip assembly for a double hung window having window frames and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having spring seat grooves extending longitudinally thereof, said plastic member having a pair of guide beads to coact with guide grooves of the window sashes, there being one such weatherstrip assembly adjacent each side jamb of the window frame, and vertically spaced springs in said spring seat grooves of at least one of said assemblies to bias said assembly way from its adjacent side jamb.
  • a weatherstrip assembly for double hung windows comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members.
  • a weatherstrip assembly for double hung windows comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member s0 that the plastic member forms a thermal barrier between the two metal members, said plastic member being under tension when assembled to said pair of metal members to form a rigid weatherstrip assembly.
  • a window assembly for double hung windows comprising a pair of elongated metal members and a generally T-shaped hard plastic member, coacting pivot grooves and beads on said members adjacent the outer end of the leg of the T, coacting snap-in grooves and beads also on said members adjacent the outer ends of the arms of the T, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members.
  • a window assembly for double hung windows comprising a pair of elongated metal members and a generally T-shaped hard plastic member, coacting pivot grooves and beads on said members adjacent the outer end of the leg of the T, coacting snap-in grooves and beads also on said members adjacent the outer ends of the arms of the T, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said arms being under tension when the grooves and beads of said members are in assembled c0- operating relation.
  • a weatherstrip assembly for a double hung window having a window frame and sashes therein comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said plastic member being under tension when assembled to said pair of metal members to form a rigid weatherstrip assembly, said metal members having counterbalance spring channels extending longitudinally thereof, and spring clips for attachment to the side jambs of the window frame to receive said weatherstrip assembly and having retainer ilanges coacting therewith, said plastic member having a pair of guide beads to coact with guide grooves of the window sashes.
  • a weatherstrip assembly for a double hung window having a frame comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on -said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves a'nd beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said plastic member being under tension when assembled to said pair of metal members to form a rigid weatherstrip assembly, said metal members having counterbalance spring channels extending longitudinally thereof, and spring clips for attachment to the side jambs of the window frame to receive said weatherstrip assembly and having retainer anges coacting therewith.
  • a weatherstrip assembly for a double hung window having a frame, a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, and a soft plastic member of tubelike character to effect a seal between said weatherstrip assembly and an adjacent jamb of the window frame, said weatherstrip assembly and said soft plastic member having cooperating bead and channel connecting means.
  • a weatherstrip assembly for a double hung window having a frame, a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, and a soft plastic member of tube-like character connected to said weatherstrip assembly and extending longitudinally thereof to eiect a seal between said weatherstrip assembly and an adjacent jamb of the window frame.
  • a weatherstrip assembly for a double hung window having a frame, a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, and a soft plastic member of tube-like character to effect a seal between said weatherstrip assembly and an adjacent jamb of the window, said hard plastic member and said soft plastic member having cooperating bead and channel connecting means.
  • a weatherstrip assembly for side jambs and sashes of a window comprising a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having open counterbalance spring channels eX- tending longitudinally thereof and provided with opposite grooves to receive counterbalance spring covers, clips for attachment to a side jamb to receive said weatherstrip assembly and having retainer flanges coacting with said metal members to normally retain them mounted in said clips, said plastic member having guide bead and guide groove coaction with the window sashes, and a soft plastic tubular element connected to said weatherstrip assembly and extending longitudinally thereof to effect a seal between said weatherstrip assembly and the adjacent side jamb.
  • a window weather-stripping assembly for side jambs and sashes of a window comprising a pair of elongated metal members and an elongated hard plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said hard plastic member having a pair of guide beads to coact with guide grooves of the Window sashes, and an elongated soft plastic member of tube-like form connected to said assembly adjacent the center thereof to effect a seal between said assembly and an adjacent side jamb.
  • a window weatherstrip assembly for side jambs and sashes of a window comprising a pair of elongated metal members and an elongated hard plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic mem'- ber forms a thermal barrier between the two metal members, said hard plastic member having a pair of guide beads to coact with guide grooves of the window sashes, and an elongated soft plastic member of tube-like form to etTect a seal between said weatherstrip assembly and an adjacent side jamb, said hard plastic member having a channel and said soft plastic member having a connect ing bead received therein.

Description

Aug. 25, 1964 M. K. JONES 3,145,433
WEATHERSTRIP ASSEMBLY FOR DOUBLE HUNG WINDOWS Filed June 4, 1962 2 Sheets-Sheet 1 ATTORNEYS.
Aug. 25, 1964 M, K, JONES 3,145,433
WEATHERSTRIP ASSEMBLY FOR DOUBLE HUNG WINDOWS Filed June 4. 1962 2 sheets-sneer 2 @-5 la a a s 5&6 56
A 52 if 28 34 56 la sa 2a 36 /VVE N TOR BY VWM/W- ATTORNEYS.
United States Patent O 3,145,433 WEATHERSTR@ ASSEMBLY FR DOUBLE HUNG WNDWS Merlin K. Jones, Cinton, iowa, assigner to Curtis Compmies, Inc., Ciinou, iowa, a corporation of Iowa Filed June 4, 1962, Ser. No. 199,835 2i) Claims. (Cl. 29m-52) This invention relates to a weatherstrip assembly for double hung windows.
One object of the invention is to provide a combined weatherstrip and guide assembly for double hung windows wherein elongated members in the form of metal extrusions are provided in pairs at each side of the window frame, each pair being connected together by an elongated member in the form of a hard plastic extrusion so that the plastic provides a thermal barrier between the metal extrusion on the inside of the house and the one on the outside to prevent frosting and condensation or sweating due to temperature differential, and to minimize loss of heat from inside `the house by conduction through the metal extrusions.
Another object is to provide metal and plastic extrusions which may be quickly and readily assembled together to form a rigid weatherstrip member without the necessity of using bolts, rivets or other fastening means, the extrusions being provided with pivot groove and bead arrangements that cooperate with snap-in groove and bead arrangements to accomplish such assembly.
Still another object is to provide the metal extrusions of such design that they may enclose counter-balance springs for the sashes, and may retain compression springs for taking up play between the two jambs of the window frame and the intervening extrusions and sashes.
A further object is to provide the extrusions so designed that sealing gaskets may cooperate between them and the side jambs of the window frame for weathersealing the backs of the eXtrusions with respect to the jambs.
Still a further object is to provide a modified form of plastic extrusion with which a special type of soft plastic tube may cooperate to serve as a weather seal between the weatherstrip assembly and the side jamb of the window.
An additional object is to provide mounting clips for the extrusions which are readily attachable to the side jambs and into which the extrusions may be snapped and will thereafter remain in position when the sashes of the window are removed from between the weatherstrip assemblies.
With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my weatherstrip assembly for double hung windows, whereby the objects above contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in detail on the accompanying drawing, wherein:
FIG. l is a horizontal sectional view through a double hung window frame showing two of my weatherstrip assemblies and a pair of sashes mounted therein.
FIG. 2 is a perspective view of one of the mounting clips for the weatherstrip assembly.
FIG. 3 is an end view of a metal extrusion, two of which are used in my weatherstrip assembly.
FIG. 4 is an end view of a plastic extrusion, one of which is used in my weatherstrip assembly.
FIG. 5 is a view similar to a portion of FIG. l show ing a modified form of plastic extrusion and a gasket tube in the form of a soft plastic extrusion associated therewith.
FIG. 6 is an end View of the modified form of plastic extrusion of FIG. 5.
FIG. 7 is an end view of the soft plastic gasket tube in the shape it normally assumes.
ICC
FIG. 8 is an end View of a metal extrusion and the plastic extrusion of my weatherstrip assembly during an initial position of the parts during assembly, and
FIG. 9 is a similar view showing the position of the parts when the assembly is nearly completed.
On the accompanying drawings I have used the reference character A to indicate in general a metal extrusion and B a generally T-shaped hard plastic extrusion. Two of the metal extrusions A (which are identical for economy of manufacture) and one of the extrusions B is used to form a complete weatherstrip assembly at one side of the window frame, and two such assemblies are shown in FlG. l between the side jambs l0 and the upper and lower sashes l2 and i4. The sashes l2 and 14 may be of wood and are provided with guide grooves 16 that cooperate with guide beads 18 of the extrusions B.
At the right hand side of the window shown in FIG. 1 the weatherstrip assembly is seated against a spring mounting clip 19. The weatherstrip assembly at the left hand side of the window is provided with several vertically spaced compression springs 7.2 that are mounted in grooves 30 and 32 of the extrusions A. These springs engage against a mounting clip Z6 similar to the mounting clip i9. The clip 19 as shown in FIG. 2 is channelshaped, having resilient flanges 24 terminating in hooked marginal edges 26. Prongs 2S are struck out of the web or back of the clip to be driven into the side jambs 10 in lieu of nails, thus simplifying the assembly procedure of the clips 19 and Ztl with respect to the jambs. Several of the clips are provided vertically spaced along the jambs. The usual blind stops 6,2 and inside stops 64 are shown installed on the side jambs lil of FIGS. l and 5.
The weatherstrip assemblies may be inserted into the mounting clips 19 and 29 by springing the anges 24 apart and thereafter the hooked marginal edges 26 normally retain the assemblies in mounted position in the clips. It will be noted the clip 19 is not as deep as the clip Ztl in order to hold the weatherstrip assembly at the right side of the window against the back of the clip 19 while the assembly at the left side is spaced therefrom to permit floating action as dictated by the compression springs 22 and the sashes 12 and 14 intervening between the two extrusions B. The spring clips -19 and 20 permit removal of the weatherstrip assemblies if desired vfor painting of the wood parts of the window frame.
The eXtrusions A are provided with longitudinally eX- tending, open spring chanels 34 in which counterbalance springs 36 for the sashes 12 and 14 are mounted. If desired plastic or metal spring covers 38 may be sprung into opposite grooves 40 of the extrusions A to cover the counterbalance springs 36 throughout the portions of their travel where such covers will not interfere with the connection from the bottom of the spring to the sash.
Sealing gaskets 4@ and 42 of sponge rubber, foamed plastic or the like may be provided for weather-sealing the space between the weatherstrip assemblies and the jambs. As between the weatherstrip assemblies and the sashes l2 and 14 the grooves 16 and beads 18 form contact surfaces of considerable extent to eifect a weather seal and provide a smoothly operating guide assembly for the sashes during their sliding motion. I have found that the plastic-to-wood engagement is excellent for slideways without excess friction yet sufcient friction under the action of the springs 22 to hold the sashes at all adjusted positions where they are not substantially counterbalanced by the springs 35. Uniform sliding action is also continuously had without lubricant of any kind.
In FIGS. 5, 6 and 7 I show a modification wherein the hard plastic extrusion B has an additional channel 44 for mounting an elongated soft plastic tube-like member C. The member C may be in the form of an extrusion trusions C thus eliminate the necessity of providing sealing gaskets such as shown at 4t) and 42 in FIG. l, and is a more satisfactory installation. Foamed plastic passes air if soft, and if of the closed-cell type it is too diicult to compress, but a soft plastic tube is not subject to these shortcomings.
To facilitate ease of assembly of the extrusions A and 'the extrusion B with relation to each other without the necessity of using bolts, rivets or the like, l have designed the extrusions A with pivot grooves 43 to receive a pair of pivot beads 50 of the extrusion B. The extrusion B is provided with a pair of snap-in grooves 52 and each extrusion A is provided with a snap-in bead Sii. Leading to the groove 52 is a surface S6 which as shown in FIG.
8 is inclined relative to a circumferential line 58 drawn from the pivot center of the groove 48 and bead Sti'. Accordingly the parts may be positioned as in FIG. 8 with the snap-in bead 54 at the position indicated 54a and will make contact with the surface 56. As the extru` sion A is then rotated counterclockwise relative to the extrusion B, for instance to the position shown in FIG. 9, the bead 54 will attain the position 54h, springing the web 6i! of the extrusion B to the position shown. Then when the snap-in bead 54 iinally snaps into the snap-in groove 52, this web 60 will still be under some tension as illustrated in FIGS. l and where these Webs are slightly curved but not as much as shown in FIG. 9. This arrangement provides an excellent pivot-snap-in assembly eliminating any fastening means and resulting in a rigid weatherstrip assembly comprising two metal members A and one plastic member B.
Any suitable metal such as aluminum or the like may be used for the extrusion A, and any suitable hard plastic such as vinyl, polystyrene, nylon or polypropylene may be used for the extrusion B. The extrusion C may be made of ilexible vinyl or polyethylene for distortion to the shape shown in FIG. 5 to accomplish eiecting sealing.
From the foregoing specification it will be obvious that I have provided a weatherstrip assembly which eliminates frosting and condensation by reason of the extrusion l B being formed of plastic which is a heat insulating material. Heat transmission through plastic when compared to that through aluminum has a ratio of about one to one thousand. Plastic material has sound deadening properties thus reducing the transmission of noise through the window opening.
The design of my weatherstrip assembly is such that the extrusions A may be identical in shape and may be of rolled section instead of extrusions if desired. The web 60 of the extrusion B is in tension and the angle of the surface 56 is important as it permits assembly as shown in FIGS. 8 and 9 and locks the weatherstrip assembly in assembled relation after the bead 54 rides smoothly up the incline. After assembly the parts A and B form a rigid assembly, the parts of which are almost impossible to separate from each other except by longitudinal movement of one relative to the other. Once assembled however and mounted in a window opening it is seldom necessary to disassemble them except for possible replacement of broken parts.
Some changes may be made in the construction and arrangement of the parts of my weatherstrip assembly as herein disclosed without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modied forms of structure or use of mechanical equivalents which may reasonably be included within their scope.
I claim as my invention:
l. in a weatherstrip assembly for a double hung window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said plastic member having a pair of guide beads longitudinally thereof and rigidly spaced apart relative t0 each other throughout their length, adjacent window sashes having cooperating guide grooves receiving said guide beads, and means biasing said beads toward said grooves.
2. In a weatherstrip assembly for a double hung window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together to form. a rigid weatherstrip member with the plastic member forming a thermal barrier between the two metal members, said plastic member and a pair of adjacent window sashes having cooperating guide portions frictionally engaging each other, said guide portions of said plastic member being rigidly spaced relative to each other, there being one such weatherstrip as sembly at each side of the window frame, and means resiliently biasing at least one of said assemblies away from an adjacent side jamb.
3. In a Weatherstrip assembly for a double hung Window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that together they form a rigid Weatherstrip member and the plastic member forms a thermal barrier between the two metal members, said plastic member and the pair of adjacent window sashes having cooperating bead-and-groove guide portions wherein said portions are rigidly spaced apart throughout their length.
4. In a weatherstrip assembly for a double hung window having a window frame and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said plastic member and a pair of adjacent window sashes having cooperating bead-and-groove guide portions wherein said portions are rigidly spaced apart and parallel throughout their length, there being one such Weatherstrip assembly at each side of the window frame, and means resiliently biasing at least one of said assemblies away from an adjacent side jamb.
5. A Weatherstrip assembly for a double hung window having a window frame and sashes therein comprising a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having counterbalance spring chan nels extending longitudinally thereof, said channels being open and having opposite grooves to receive counterbalance spring covers, and channel-shaped spring clips for attachment to the side jams of the window frame to receive said weatherstrip assembly and having retainer anges coacting with said metal members to retain them in mounted position, said plastic member having a pair of guide beads to coact with guide grooves of the window sashes.
6. A weatherstrip assembly for a double hung window having a window frame and sashes therein comprising a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having counterbalance spring channels extending longitudinally thereof, and channel-shaped spring clips for attachment to the side jambs of the Window frame to receive said weatherstrip assembly and having retainer anges coacting with said metal members to normally retain them mounted in said spring clips, said plastic member having a pair of guide beads to coact with guide grooves of the Window sashes.
7. A Weatherstrip assembly for a double hung Window having a frame comprising a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having counterbalance spring channels extending longitudinally thereof, and channel-shaped spring clips for attachment to the side jambs of the window to receive said weatherstrip assembly and having retainer flanges coacting with said metal members to normally retain them in their mounted position.
8. In a weatherstrip assembly for a double hung window having window frames and sashes therein, a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having spring seat grooves extending longitudinally thereof, said plastic member having a pair of guide beads to coact with guide grooves of the window sashes, there being one such weatherstrip assembly adjacent each side jamb of the window frame, and vertically spaced springs in said spring seat grooves of at least one of said assemblies to bias said assembly way from its adjacent side jamb.
9. A weatherstrip assembly for double hung windows comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members.
10. A weatherstrip assembly for double hung windows comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member s0 that the plastic member forms a thermal barrier between the two metal members, said plastic member being under tension when assembled to said pair of metal members to form a rigid weatherstrip assembly.
111. A window assembly for double hung windows comprising a pair of elongated metal members and a generally T-shaped hard plastic member, coacting pivot grooves and beads on said members adjacent the outer end of the leg of the T, coacting snap-in grooves and beads also on said members adjacent the outer ends of the arms of the T, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members.
12. A window assembly for double hung windows comprising a pair of elongated metal members and a generally T-shaped hard plastic member, coacting pivot grooves and beads on said members adjacent the outer end of the leg of the T, coacting snap-in grooves and beads also on said members adjacent the outer ends of the arms of the T, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said arms being under tension when the grooves and beads of said members are in assembled c0- operating relation.
13. A weatherstrip assembly for a double hung window having a window frame and sashes therein comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said plastic member being under tension when assembled to said pair of metal members to form a rigid weatherstrip assembly, said metal members having counterbalance spring channels extending longitudinally thereof, and spring clips for attachment to the side jambs of the window frame to receive said weatherstrip assembly and having retainer ilanges coacting therewith, said plastic member having a pair of guide beads to coact with guide grooves of the window sashes.
14. A weatherstrip assembly for a double hung window having a frame comprising a pair of elongated metal members and an elongated plastic member, coacting pivot grooves and beads on -said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves a'nd beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said plastic member being under tension when assembled to said pair of metal members to form a rigid weatherstrip assembly, said metal members having counterbalance spring channels extending longitudinally thereof, and spring clips for attachment to the side jambs of the window frame to receive said weatherstrip assembly and having retainer anges coacting therewith.
15. In a weatherstrip assembly for a double hung window having a frame, a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, and a soft plastic member of tubelike character to effect a seal between said weatherstrip assembly and an adjacent jamb of the window frame, said weatherstrip assembly and said soft plastic member having cooperating bead and channel connecting means.
16. In a weatherstrip assembly for a double hung window having a frame, a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, and a soft plastic member of tube-like character connected to said weatherstrip assembly and extending longitudinally thereof to eiect a seal between said weatherstrip assembly and an adjacent jamb of the window frame.
17. In a weatherstrip assembly for a double hung window having a frame, a pair of elongated metal members and an elongated plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, and a soft plastic member of tube-like character to efect a seal between said weatherstrip assembly and an adjacent jamb of the window, said hard plastic member and said soft plastic member having cooperating bead and channel connecting means.
18. A weatherstrip assembly for side jambs and sashes of a window comprising a pair of elongated metal members and an elongated hard plastic member assembled together so that the plastic member forms a thermal barrier between the two metal members, said metal members having open counterbalance spring channels eX- tending longitudinally thereof and provided with opposite grooves to receive counterbalance spring covers, clips for attachment to a side jamb to receive said weatherstrip assembly and having retainer flanges coacting with said metal members to normally retain them mounted in said clips, said plastic member having guide bead and guide groove coaction with the window sashes, and a soft plastic tubular element connected to said weatherstrip assembly and extending longitudinally thereof to effect a seal between said weatherstrip assembly and the adjacent side jamb.
19. A window weather-stripping assembly for side jambs and sashes of a window comprising a pair of elongated metal members and an elongated hard plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic member forms a thermal barrier between the two metal members, said hard plastic member having a pair of guide beads to coact with guide grooves of the Window sashes, and an elongated soft plastic member of tube-like form connected to said assembly adjacent the center thereof to effect a seal between said assembly and an adjacent side jamb.
20. A window weatherstrip assembly for side jambs and sashes of a window comprising a pair of elongated metal members and an elongated hard plastic member, coacting pivot grooves and beads on said members, coacting snap-in grooves and beads also on said members spaced from said pivot grooves and beads, said grooves and beads constituting connecting means for said metal members to said plastic member so that the plastic mem'- ber forms a thermal barrier between the two metal members, said hard plastic member having a pair of guide beads to coact with guide grooves of the window sashes, and an elongated soft plastic member of tube-like form to etTect a seal between said weatherstrip assembly and an adjacent side jamb, said hard plastic member having a channel and said soft plastic member having a connect ing bead received therein.
References Cited in the le of this patent UNITED STATES PATENTS 2,541,325 Beil Feb. 13, 1951 2,789,578 Toth July 9, 1957 2,835,360 Bernardoni et al May 20, 1958

Claims (1)

1. IN A WATHERSTRIP ASSEMBLY FOR A DOUBLE HUNG WINDOW HAVING A WINDOW FRAME AND SASHES THEREIN, A PAIR OF ELONGATED METAL MEMBERS AND AN ELONGATED HARD PLASTIC MEMBER ASSEMBLED TOGETHER SO THAT THE PLASTIC MEMBER FORMS A THERMAL BARRIER BETWEEN THE TWO METAL MEMBERS, SAID PLASTIC MEMBER HAVING A PAIR OF GUIDE BEADS LONGITUDINALLY THEREOF AND RIGIDLY SPACED APART RELATIVE TO EACH OTHER THROUGHOUT THEIR LENGTH, ADJACENT WINDOW SASHES HAV-
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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235916A (en) * 1964-05-04 1966-02-22 Rolscreen Co Double hung window
US3336719A (en) * 1964-08-28 1967-08-22 Pittsburgh Plate Glass Co Joint locking means
US3869839A (en) * 1973-10-26 1975-03-11 Louisiana Pacific Corp Adjustable window seat guide
US4096665A (en) * 1977-03-10 1978-06-27 Ellingson Jr Chester W Window sealing structure
US5159794A (en) * 1991-04-04 1992-11-03 Caldwell Manufacturing Company Jamb liner slot cover
US5199219A (en) * 1991-07-22 1993-04-06 Caldwell Manufacturing Company Window jamb liner
US5265308A (en) * 1990-12-19 1993-11-30 Intek Weatherseal Products, Inc. Jamb liner
US5375376A (en) * 1993-01-21 1994-12-27 Crane Plastics Company Limited Partnership Polymeric sealing/spring strip and extrusion method of producing same
AU664580B2 (en) * 1991-12-20 1995-11-23 Intek Weatherseal Products, Inc. Jamb liner
US5526608A (en) * 1994-12-09 1996-06-18 Newell Manufacturing Company Extruded window jamb liner with yieldable sealing means
US5566507A (en) * 1992-06-24 1996-10-22 Andersen Corporation Double-hung tilting sash type window system
US5671566A (en) * 1995-09-13 1997-09-30 Clim-A-Tech Industries, Inc. Winged jamb liner
US5699636A (en) * 1994-12-09 1997-12-23 Newell Manufacturing Company Extruded window jamb liner with yieldable sealing means
US6041550A (en) * 1996-11-05 2000-03-28 Clim--A--Tech Industries, Inc. Resilient cover for covering a spring of a jamb liner and for attenuating noise generated by spring movement
US6122864A (en) * 1998-01-13 2000-09-26 Amesbury Group, Inc. Floating weather-strip for use with a fixed jambliner
US6148562A (en) * 1997-08-29 2000-11-21 Newell Industrial Corporation Soundproof spring and cover for window jamb liners
US6256931B1 (en) 1997-07-31 2001-07-10 Emco Enterprises, Inc. Window retention system
US6279270B1 (en) 1996-08-22 2001-08-28 Newell Manufacturing Company Window jamb liner
US6305126B1 (en) * 1999-12-10 2001-10-23 Marvin Lumber And Cedar Company Window jamb component assembly
US6640869B2 (en) * 2001-12-21 2003-11-04 Pella Corp. Storm door with counterbalance
US6722082B1 (en) * 2000-06-28 2004-04-20 Andersen Corporation Window having a hinged weatherstrip
US20050066581A1 (en) * 2003-09-26 2005-03-31 Intek Plastics, Inc. Weather-strip
US20060150519A1 (en) * 2005-01-12 2006-07-13 Sees Benjamin R Jamb liner for a window assembly
US20060254151A1 (en) * 2005-05-12 2006-11-16 Marvin Lumber And Cedar Company, D/B/A Marvin Windows And Doors Structural filler system for a window or door
US7448164B1 (en) 2003-12-01 2008-11-11 Kolbe & Kolbe Millwork Co., Inc. Double-hung window with uniform wood interior
US20090241444A1 (en) * 2008-04-01 2009-10-01 Griffiths Robert T Wall panel system with snap clip
US7631465B2 (en) 2005-05-12 2009-12-15 Marvin Lumber And Cedar Company Jamb adjustment and securement assembly and methods therefor
US20120137625A1 (en) * 2010-12-03 2012-06-07 Sp Custom Carpentry & Windows, Inc. Window jamb liner assembly
US20140259944A1 (en) * 2013-03-15 2014-09-18 Pella Corporation Fenestration unit with sash retention
US10246928B2 (en) * 2016-09-23 2019-04-02 Milton Manufacturing Inc. Armored window drive mechanism and system
US10851572B1 (en) * 2016-12-14 2020-12-01 Andersen Corporation Height compensating sliding fenestration systems and methods
US11578528B2 (en) * 2019-01-11 2023-02-14 Pella Corporation Sill systems for sliding fenestration units

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US2541325A (en) * 1945-06-22 1951-02-13 Curtis Companies Inc Window structure
US2789578A (en) * 1950-12-05 1957-04-23 Bendix Aviat Corp Valve device for fluid pressure system
US2835360A (en) * 1956-04-03 1958-05-20 Bernardoni John Insulated non-heat conducting metal window frame

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235916A (en) * 1964-05-04 1966-02-22 Rolscreen Co Double hung window
US3336719A (en) * 1964-08-28 1967-08-22 Pittsburgh Plate Glass Co Joint locking means
US3869839A (en) * 1973-10-26 1975-03-11 Louisiana Pacific Corp Adjustable window seat guide
US4096665A (en) * 1977-03-10 1978-06-27 Ellingson Jr Chester W Window sealing structure
US5772190A (en) * 1990-12-19 1998-06-30 Intek Weatherseal Products, Inc. Spring member
US5265308A (en) * 1990-12-19 1993-11-30 Intek Weatherseal Products, Inc. Jamb liner
US5159794A (en) * 1991-04-04 1992-11-03 Caldwell Manufacturing Company Jamb liner slot cover
US5199219A (en) * 1991-07-22 1993-04-06 Caldwell Manufacturing Company Window jamb liner
AU664580B2 (en) * 1991-12-20 1995-11-23 Intek Weatherseal Products, Inc. Jamb liner
US5566507A (en) * 1992-06-24 1996-10-22 Andersen Corporation Double-hung tilting sash type window system
US5375376A (en) * 1993-01-21 1994-12-27 Crane Plastics Company Limited Partnership Polymeric sealing/spring strip and extrusion method of producing same
US5699636A (en) * 1994-12-09 1997-12-23 Newell Manufacturing Company Extruded window jamb liner with yieldable sealing means
US5526608A (en) * 1994-12-09 1996-06-18 Newell Manufacturing Company Extruded window jamb liner with yieldable sealing means
US5671566A (en) * 1995-09-13 1997-09-30 Clim-A-Tech Industries, Inc. Winged jamb liner
US6279270B1 (en) 1996-08-22 2001-08-28 Newell Manufacturing Company Window jamb liner
US6041550A (en) * 1996-11-05 2000-03-28 Clim--A--Tech Industries, Inc. Resilient cover for covering a spring of a jamb liner and for attenuating noise generated by spring movement
US6769214B1 (en) 1997-07-31 2004-08-03 Emco Enterprises, Inc. Strip for retaining storm door window elements
US6256931B1 (en) 1997-07-31 2001-07-10 Emco Enterprises, Inc. Window retention system
US6148562A (en) * 1997-08-29 2000-11-21 Newell Industrial Corporation Soundproof spring and cover for window jamb liners
US6122864A (en) * 1998-01-13 2000-09-26 Amesbury Group, Inc. Floating weather-strip for use with a fixed jambliner
US6305126B1 (en) * 1999-12-10 2001-10-23 Marvin Lumber And Cedar Company Window jamb component assembly
US6684571B2 (en) * 1999-12-10 2004-02-03 Marvin Lumber And Cedar Company Window jamb having uniform appearance
US20040139659A1 (en) * 1999-12-10 2004-07-22 Marvin Lumber And Cedar Company Window jamb component assembly
US6722082B1 (en) * 2000-06-28 2004-04-20 Andersen Corporation Window having a hinged weatherstrip
US6640869B2 (en) * 2001-12-21 2003-11-04 Pella Corp. Storm door with counterbalance
US20050066581A1 (en) * 2003-09-26 2005-03-31 Intek Plastics, Inc. Weather-strip
US8429856B1 (en) 2003-12-01 2013-04-30 Kolbe & Kolbe Millwork Co., Inc. Double-hung window with uniform wood interior
US7448164B1 (en) 2003-12-01 2008-11-11 Kolbe & Kolbe Millwork Co., Inc. Double-hung window with uniform wood interior
US8196355B1 (en) 2003-12-01 2012-06-12 Kolbe & Kolbe Millwork, Co., Inc. Double-hung window with uniform wood interior
US20060150519A1 (en) * 2005-01-12 2006-07-13 Sees Benjamin R Jamb liner for a window assembly
US8096081B2 (en) * 2005-01-12 2012-01-17 Pella Corporation Jamb liner for a window assembly
US20060254151A1 (en) * 2005-05-12 2006-11-16 Marvin Lumber And Cedar Company, D/B/A Marvin Windows And Doors Structural filler system for a window or door
US7552562B2 (en) * 2005-05-12 2009-06-30 Marvin Lumber And Cedar Company Structural filler system for a window or door
US7631465B2 (en) 2005-05-12 2009-12-15 Marvin Lumber And Cedar Company Jamb adjustment and securement assembly and methods therefor
US20090241444A1 (en) * 2008-04-01 2009-10-01 Griffiths Robert T Wall panel system with snap clip
US20120137625A1 (en) * 2010-12-03 2012-06-07 Sp Custom Carpentry & Windows, Inc. Window jamb liner assembly
US9394741B2 (en) * 2010-12-03 2016-07-19 Sp Custom Carpentry & Windows, Inc. Window jamb liner assembly
US20140259944A1 (en) * 2013-03-15 2014-09-18 Pella Corporation Fenestration unit with sash retention
US9650822B2 (en) * 2013-03-15 2017-05-16 Pella Corporation Fenestration unit with sash retention
US10246928B2 (en) * 2016-09-23 2019-04-02 Milton Manufacturing Inc. Armored window drive mechanism and system
US10851572B1 (en) * 2016-12-14 2020-12-01 Andersen Corporation Height compensating sliding fenestration systems and methods
US11578528B2 (en) * 2019-01-11 2023-02-14 Pella Corporation Sill systems for sliding fenestration units

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