US1957592A

US1957592A - Weather strip for sliding sashes

Info

Publication number: US1957592A
Application number: US641209A
Authority: US
Inventors: Rudolph L Heid
Original assignee: Chamberlin Metal Weather Strip Co
Current assignee: Chamberlin Metal Weather Strip Co
Priority date: 1932-11-04
Filing date: 1932-11-04
Publication date: 1934-05-08
Anticipated expiration: 1951-05-08

Description

y 1934- R. 1.. HElD 1,957,592

WEATHER STRIP FOR SLIDING SASHES Filed Nov. 4, 1932 INVENTOR. 190000 14 L 1 /5/11 ATTORNEY.

Patented May 8, 1934 UNITED STATES PATENT OFFICE WEATHER STRIP FOR SLIDING SASHES Application November 4, 1932, Serial No. 641,209

7 Claims.

This invention relates to metal weather strip ping for sliding sash, the object of the invention being to provide a strip of sheet metal formed with spaced longitudinal ribs to close the interstice between the sash and its groove in the window frame to thereby prevent ingress of air from the exterior of the sash to the interior transversely of the frame and further formed to prevent seepage of air longitudinally in the 10 space between the edge of the sash and channels of the weather stripping formed by the longitudinal beads or ribs.

It has been the practice heretofore to form metal weather stripping with longitudinal ribs which are engaged by the sash edge which serve to prevent movement of air laterally around the edge of the sash and into the room and it has been found that the sash, which rides in contact with the ribs, provides a vertical air channel between the ribs and the sash through which air may flow into the room. Such air flow between the outer sash member of the two sliding sash and its strip passes through the said channels to the pulley opening and into the space in the window frame provided for the sash weights and thence outwardly through the opening for the pulley of the lower sash. Also, with such prior structure, while air is prevented from flowing laterally around the edge of the lower sash, it

does to some degree enter the outer channel formed between the outer rib and the sash edge and thence upwardly into the room.

By my improved construction hereinafter more fully described and claimed, means is provided to 3 prevent a flow of air longitudinally of the channel formed between the ribs of the strip and the sash edge, and the invention may be utilized in conjunction with various shapes of metal weather stripping, even such forms in which no longitudinal beads are provided, except a sealing rib.

The invention is shown in conjunction with several approved forms of weather stripping in the accompanying drawing in which--- Fig. l is a cross section of a sash and groove therefor provided in a window frame and showing one form of my improved weather stripping arranged to prevent movement of air longitudinally between the strip and the sash.

' Fig. 2 is a perspective view of the form of weather stripping shown in Fig. 1.

Fig. 3 shows a diiierent form of weather strip- D Fig. 4 is an end elevation of another form of metal stripping with which my invention may be utilized.

Fig. 5 is a sectional view showing the grooved face of the window frame and sash engaging therein with my improved weather stripping in 69 place.

To receive the usual sash the frame is provided with a pair of grooves for the upper and lower sash respectively one being formed between a parting strip 1 and stop 2 and the other on 1e opposite side between which the edge of the respective sash are slidable.

The type of strip shown in Fig. 1 is the form shown in the patent to Joseph P. Glaser No. 1,525,540, issued February 10, 1925, in which the (Q strip has a return-bent portion 4 providing a longitudinal sealing rib riding in a groove 5 provided in the edge of the sash and the strip is of a width to engage beneath the stop as at 6 and in a groove in the parting strip indicated at '7 and this strip is also formed with the longitudinal beads 8 and 9. If the strip be formed with merely the longitudinal beads as described, there is a

channel

10 and 11 provided between the beads 8 and 9 and between the bead 8 and the edge of so the strip, one wall of which is formed by the body of the strip and the other of which is formed by the contacting face of the sash rail and it is these channels through which air may flow vertically into the room in two ways with the dif- 35 ferent sash. With the lower sash, air may enter an interstice at 12 between the strip and the sash and enter the channel 11 and thus flow into the room at the top of the lower sash. With the upper sash, which is the outside member of 9 the pair of sash, air may enter the channels at the bottom edge of the sash and flow upwardly to the pulley opening 14 and pass through the said opening thence through the pulley opening 13 for the lower sash into the room.

I To avoid such vertical flow of air, I form transverse beads 15 of which there are several spaced along the strip as will be understood from Fig. 5. This transverse head 15 is shown as being formed at a right angle to the longitudinal beads 8 and 9 but may be at any angle thereto that may produce the desired result without departing from the spirit of this invention. The bead 15, whatever its angle may be, is of the same height as the ribs 8 and 9 so that the upper surfaces of 1c the beads 8 and 9 and the series of transverse beads 15 are all in the same plane and are engaged by the edge of the sash. Thus free movement of air between the sash and the strip in the vertical channels provided by the longitudinal beads is effectually prevented and likewise ingress of air transversely of the stripping to the interior of the room is prevented as heretofore described by the longitudinal beads.

In the stripping shown in Figs. 1 and 2, the bead 15 terminates short of the edge 6 of the strip and the end thereof is practically in abutting relation with the stop member 2 but in the case such as is shown at the right side of Fig. 4, where the edge of the strip is not inserted in the parting strip or between the member 2 and bottom of the groove, the bead may extend entirely to the said edge.

In Fig. 1 the longitudinal beads are shown as being formed on one side only of the sealing bead 4 but, as shown in Fig. 3,

longitudinal ribs

17 and 18 may be provided on opposite sides of the sealing rib 19 and a transverse bead 20 may be formed on one side and a similar bead 21 on the opposite side of the member 19.

The strip may be made having a longitudinal sealing rib for entering the groove in the edge of a sash and the portions of the strip on opposite sides of the sealing rib or only on one side as shown in Fig. 4 are not provided with longitudinal ribs. As shown in Fig. 4, one side of the strip is not provided with a longitudinal bead or beads but is provided with a series of transverse beads indicated at 22 and these serve to prevent vertical movement of the air in the channel between such portion of the strip and the edge of the sash. The invention therefore is not confined to the use of the transverse ribs with longitudinal ribs.

It will therefore be evident that whatever the form of the strip may be, the present invention consists essentially in the provision of transverse ribs in the sheet metal strip to provide a stop for movement of air vertically in the channel or 1 channels between the sash member and the strip and this essential feature of the invention is not confined to the shape of the strip in cross section.

Having thus briefly described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States isg 1. A weather strip for positioning in the bottom of the sash groove of a window frame in which the sash is slidable, comprising a metal strip positioned in the bottom of the runway or groove and between members of the frame forming the side walls of the groove, the strip having a width greater than the width of the groove providing edge portions engaged by the said side members of the frame, and transverse ribs formed in the body of the strip extending to practically abutting relation at the ends with the said side members providing a means for preventing flow of air vertically between the sash edge and strip, said strip further having a longitudinal sealing rib engaging the sash in a manner to prevent movement of air transversely between the sash edge and strip.

2. A weather strip for use in the sash groove of a window frame in which the sash is slidable comprising a sheet metal strip adapted to be secured in the bottom of the groove and provided with a longitudinal sealing rib engageable in a groove with which the sash edge is provided, the body of the strip on at least one side of the sealing rib having a series of transversely positioned beads of the same height engaged by the sash edge whereby flow of air vertically in the channel between the sash edge and strip is practically prevented.

3.' A weather strip for sealing the interstice between the bottom of a sash groove of a window frame and a sash slidably mounted therein comprising a sheet metal strip adapted to be secured in the bottom of the groove and having longitudinal ribs formed on the sash side of the strip of a height to be engaged by the sash edge, and a series of equi-distantly spaced transverse ribs extending across the said longitudinal ribs and providing a means for practically preventing flow of air longitudinally of the channels formed between the ribs and the sash edge.

4. A weather strip for use in the sash groove of a window frame comprising a metal strip in the groove shaped to provide longitudinal beads engaging the edge of the sash and a series of spaced angularly positioned beads of the same height as the longitudinal beads and extending transversely thereof providing means to prevent movement of air vertically in the channels formed between the longitudinal beads and sash edge engaging the same.

5. A weather strip for positioning in the bottom of the sash groove of a window frame in which a sash is slidable, comprising a metal strip having a longitudinal sealing rib engaging in the sash 1' in a manner to prevent flow of air transversely through the groove, and a series of spaced ribs of a height to occupy the space between the sash edge and body of the strip extending transversely of the said body to practically prevent 1 flow of air vertically between the sash edge and strip.

6. A weather strip for positioning in the bottom of the sash groove of a window frame in which a sash is slidable, comprising a metal strip secured l at its opposite edges in the groove and shaped to provide raised portions on the face engaged by the sash, said portions extending at an angle to the direction of movement of the sash and providing a means for preventing flow of air ver- 1 tically between the sash edge and the strip.

'7. A weather strip for positioning in the space between the bottom of the groove of a window frame and edge of a sash engaging therein comrising a sheet metal strip having portions pro- 1 jecting on the sash side extending at an angle to the direction of movement of the sash and filling the space between the body of the strip and the sash edge and, due to practical engagement of the r sash therewith, providing a means for preventing 1 a flow of air vertically between the sash edge and the strip.

RUDOLPH L. HEID.