US2174279A

US2174279A - Double window construction

Info

Publication number: US2174279A
Application number: US162258A
Authority: US
Inventors: Edward F Toney
Original assignee: Pittsburgh Plate Glass Co
Current assignee: PPG Industries Inc
Priority date: 1937-09-03
Filing date: 1937-09-03
Publication date: 1939-09-26
Anticipated expiration: 1956-09-26

Description

Sept'. 26, 1939. E. F. ToNEY n DOUBLE WINDOW CONSTRUCTION Filed sept. 3, 1937 2 y Sheets-Sheet 2 IN V EN TOR F 7'oA/Ev Y A TTDRNE YS.

Patented Sept. 26, 1939V UNITED STATES PATENT IOFFICE DOUBLE WINDOW CONSTRUCTION Application september s, 1937, serial No. 162,258

9 Claims.

'I'his invention relates to a window construction ggg; more particularly to a double glazed Window An object of the present invention is to provide a double glazed window construction which has a high thermal insulating value. Another object of this invention is to construct a double glazed window in such manner that the two window frames may be readily separated for the purpose of cleaning the inner surfaces of the glass sheets. A further object of my invention is to provide a relatively simple frame and sash construction in which the glass-sheets are firmly supported in such manner effectively to seal the -space between them against the entrance of dirt and moisture,

but at the same time permit of easy replacement of the glass in the frame in caseof breakage.

Other objects and advantages will become apparent during the course of the following detailed delscription of the invention.

Certain embodiments of my invention are illustrated in the accompanying drawings in which like reference numerals designate corresponding parts in all of the views, and wherein: Figure 1 is a vertical sectional view of a sash construction embodying my invention; Figure 2 is a transverse sectional view of the sash construction; and Figure 3 is a vertical sectional view of a modied form of sash construction.

- Referring to Figures 1 and 2, a sash construction I comprises a hollow metallic frame 2 which is substantially of L-shape in cross section and includes vertical sides 3 and transverse sides '4, the latter of which have inwardly projecting edges 5 about their peripheries. 'Ihe vertical sides 3 are formed with transverse flanges 1 extending therefrom and spaced downwardly from the outer margin of the sides 3, to provide rims 8 which are in the same plane of the vertical sides spaced parallel relation to the vertical sides 3.

Each of the ribs 9 is provided with a transverse ledge I0, which serves as a support for a glass sheet I2 carried by the frame 2.

The glass sheet I2 is insulated from the ledges I0 by a strip I3 of resilient cushioning material in order that any breakage or chipping of the edges of said glass sheet is minimized. A resil- 5o ient weit I4 of rubber or other suitable material 3. The transverse flanges 1 have ribs 9 project; i ing inwardly from the edges of said flanges 1 inv ledge I Il and a laterally projecting rib I1 rests upon the rim 8. By reason of the co-action of the rib I1, the edge I5, the rim 8 and the ledge I0, the welt I4 is locked into position and prevents accidental displacement of the glass sheet from l the frame 2. e

A hinge I8, extending substantially the entire width of the unit I, is secured to the inner side of the frame 2 forming the bottom rail of the sash. One strap I9 of the hinge I8 is of L-shape ld to provide a flange 2li which is secured to the vertical side 3 of the frame 2. The outer strap 22 of the hinge I8 carries a second frame 23. The frame 23 is provided with inwardly projecting shoulders 24 and outwardly projecting anges 25 ll in spaced alignment with the inwardly projecting edges 5 formed on the frame 2. The frame 23 is also provided with inwardly projecting ribs 21 in spaced parallel relation to the shoulders 24. Each of the ribs 21 is'provided with a ledge!! m which serves as a support for a second glass sheet 29 carried by the frame 23. The glass sheet 23 is insulated from the ledges 23 by a strip 3II of rubber or otherresilient cushioning material. A resilient welt 32 of rubber or other suitable mates rial similar to the welt I4 is placed circumferentially of the frame'23 to engage the outer surface of the glass sheet 29 adjacent the periphery thereof. The welt 32 is provided with a laterally projecting edge 33 corresponding to the edge I5 .o of the welt I4 which engages the under surface of the ledge 23. A rib 34 corresponding to the rib I1 projects laterally from the face of the welt 32 and rests upon the shoulders 24. The welt-32 is accordingly locked in position and serves to hold u the glass sheet 29 securely in the frame 23.

A resilient sealing strip 35 extending circumferentially of the unit is secured in a groove 31 provided in the ribs 3 of the frame 2 and engages the outer surface of the ribs 21 of the frame 23 when n ,the two frames are in assembled position. A plurality of longitudinal ridges 38, formed on the outer surface of the ribs 21 insures a close union between the strip 35 and the ribs 21.

" The

frames

2 and 23 are secured together on 45 the side opposite to the hinge I8 in any suitable manner, as by a plurality of bolts 45v passing through an angle iron 46, secured to the frame 23, and a bar 41 secured to the vertical side 3 of the frame 2 by means of screws 48, and having ,5u an intermediate portion 43 oifset to provide a space for the heads of the bolts 45.

A metallic closure strip is releasably secured to the opening in the sash I between the flange l 25 and the projecting edge 5, by means of hooku like clips 5| formed integrally therewith by bending the marginal portions of the strip inwardly to provide said clips. This strip 50 is readily removed to permit the bolts 45 to be loosened and the frame 23 to be swung open for the purpose of cleaning the inner surfaces of the glass sheets |2- and 29.

When the

frames

2 and 23 are locked in assembled position, an air space 52 is provided therebetween which is sealed from the atmosphere, thereby materially reducing the possibility of the entrance of moisture and foreign material to impair the appearance of the window. A dehydrating unit 53 is secured in the hollow frame 2 and is connected with the air space 52 by means of a plurality of tubes 54, passing through the sealing strip 35. In this manner, the air entrapped within the window is maintained in substantially anhydrous condition, for any water vapor entering therein is readily absorbed in the dehydrating unit. The dehydrating unit 53 is preferably positioned in one of the side rails of the sash I in order to obviate interference with other elements also contained in the sash.

A modification of the proposed construction is illustrated in Figure 3 of the drawings, in which the sash I comprises a frame 55 substantially of L-shape in cross section having vertical sides 56 and transverse sides 51, the latter of which have inwardly projecting edges 58 about their inner peripheries. The vertical sides 56 are formed with enlarged or thickened marginal portions 59, in which are provided a ledge 60 and a longitudinal groove 6I. 'I'he ledge 60 serves as a support for a glass sheet 62 carried by the frame 55. The glass sheet 62' is insulated from the ledges 60 by a channel ,63 of rubber or other resilient cushioning material. 'I'he glass sheet 62 is secured upon the ledge 60 by means of a detachable metallic ilange member 65 of angular cross section, having a rib 66 adapted to lie in the groove 6I of the section 59, said rib 66 engaging and locking with a shoulder 61 provided in the upper portion of the groove 5I, while the flange 65 overlies the glass sheet 62 adjacent the periphery thereof. A wedge 69 is also secured in the groove 6I to engage the lower portion of the flange member 65, and to hold said flange in its interlocking position. y

A frame 10 is secured to the frame 55 by means of a hinge 1I, extending substantially the entire width of the unit I, concealed within the frame 55. The hinge 1I corresponds to the hinge I8 and is secured to the frames in 'a manner similar to that previously set forth. The frame 10 is provided with outwardly projecting anges 12 in spaced alignment with the inwardly projecting edges 58 formed on the frame 55, and a ledge 13, the base portion of which carries a longitudinal groove 14. This construction corresponds to the ledge 60 and groove 6I provided in theframe 55. The ledge 23 serves as a support for a glass sheet 15 carried by the frame 10. The glass sheet 15 is insulated from the ledges 13 by a marginal covering 16, of resilient cushioning material. The glass sheet 15 is secured upon the ledge 13 by means of a detachable metallic flange member 11 of angular cross section, having a rib 18 adapted to lie in the groove 14, said rib 18 engaging and locking with a shoulder 18 provided in the upper portion of the groove 14, while the flange`member 11 overlies the glass sheet 15 adjacent the periphery thereof. A wedge 8l is also secured in the groove 14 to engage the 'i rlower portion of the flange member 11 and to hold said flange in its interlocking position.

A resilient welt 83, extending circumferentially of the unit l, having a base portion 84 of dovetail f yof the wedges 68 and 8l from the grooves 6I and 14 respectively, after assembling, by exerting a positive external pressure thereon.

The manner in which the frames are locked together and the means for dehydrating the unit are the same as have already been described in connection with the embodiment of' the invention disclosed in Figures 1 and 2 of the drawings.

In the embodiment of my invention as illustrated in Figures 1 and 2, either of the glass sheets I2 and 29 may be removed from the sash by merely freeing the welt I4 or 32 from its interlocking engagement with the frame elements. The hook-shaped base of the rubber welts insures a positive locking action between' the welt and the frame, while the body portion of the welt provides adequate support for the glass sheets. In the modified construction, shown in Fig. 3, the flange members 65 and 11 provide an even stronger, support for the glass sheets, although replacement of the sheets is rendered slightly more difficult. In this modified construction, however, a supplemental feature is worthy of mention. It will be seen that a considerable portion of theflange members 65 and 11 is exposed to the air or gas entrapped in the unit. Since there is a possibility that some moisture will enter the air space and remain therein, especially when the dehydrator chemicals are exhausted, the metal surface will be colder than the glass and any condensation which might occur will be formedon this metal. Accordingly the unit would not become clouded or stained from this condensed moisture.

The cross sectional dimensions of the hollow4 frames 2 and 55 should be adequate to house the hinges and securing elements and also to permit the margins of the trames 23 and 1l, adjacent to the hinges, to swing inwardly into the frame when the structures are opened.

What I claim is:

1. In combination in a double glazed window construction, a sash comprising a hollow metallic frame having a pair oi' parallel spaced flanges unitary therewith about its inner periphery, a transverse ledge extending from one of said flanges, a sheet of glass supported on the ledge and releasably secured in the frame, a. second frame in spaced parallel relation to the firstmentioned frame, aV sheet of glass releasably secured in the second frame, means disposed within the mst-mentioned frame securing the second frame in position and a resilient sealing strip disposed between the two frames and engaging the adjacent faces thereof when the frames are in assembled position. f

2. In combination in a double glazed window construction, a vsash comprising a hollow metallic framey having a pair of parallel spaced flanges unitary therewith about its inner periphery, a transverse ledge extending from one of the flanges, a sheet of glass supported on the ledge spaced parallel relationship.

9. In combination in a double glazed window construction, a sash comprising a hollow metallicV frame substantially of L-shape in cross section, having spaced anges projecting therefrom parallel to eachother and a circumferentally extending opening in said frame, a glass sheet releasably secured between the parallel nanges, a. hinge disposed within the hollow frame havingv one leaf bent at right angles to' form a Ilange which is secured to the vertical side of the hollowframe opposite the circumferentially extending opening therein, a second frame spaced from the mst-mentioned frame and secured to the second leaf `of thehinge, a glass sheet releasably secured in the second frame, means disposed within the mst-mentioned frame locking the two frames together in spaced parallel relationship, and a. metallic closure strip releasably secured between the frames to complete the assembly.

- EDWARD F. TONEY.