US2845154A

US2845154A - Sash construction

Info

Publication number: US2845154A
Application number: US460475A
Authority: US
Inventors: Duffield Brainard
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-10-05
Filing date: 1954-10-05
Publication date: 1958-07-29
Anticipated expiration: 1975-07-29

Description

July 29, 1958 B. DUFFIELD SASH CONSTRUCTION Filed Oct. 5. 1954 mm w NE 5 w N 1 m D m M m m 2 SASH CGNSTRUCTION Brainard Dufield, Berkeley, Calif.

Application October 5, 1954, Serial No. 460,475

6 Claims. (Cl. 189-78) My invention relates to sash construction and more particularly to a sash bar assembly, primarily for anchoring adjacently disposed window panes for store fronts or the like.

Among the objects of my invention are:

(1) To provide a novel and improved sash bar assemy;

(2) To provide a novel and'improved sash bar assembly for anchoring adjacently disposed window panes;

(3) To provide a novel and improved sash bar assembly for anchoring adjacently disposed window panes, and which minmizes probability of chipping or cracking;

(4) To provide a novel and improved sash bar assembly for anchoring adjacently disposed Window panes, and in a manner which distributes grip pressure more evenly along the rim of each pane, to assure better anchorage with less likelihood of breakage;

(5) To provide a novel and improved sash bar as sembly for anchoring adjacently disposed window panes, and which cuts'installation time substantially in half;

(6) To provide a novel and improved sash bar assembly for anchoring adjacently disposed window panes, and which permits of a fuller cut of the pane, thereby minimizing chances of the pane being pulled out under excessive wind loads;

(7) To provide a novel and improved sash bar assembly for anchoring adjacently disposed window panes, and which permits of a smooth face member, free of visible screws or other fastening means;

(8) To provide a novel and improved sash bar assem-' bly for anchoring adjacently disposed window panes, and which can be assembled with a minimum of labor; and

(9) To provide a novel and improved sash bar assembly, components of which may be formed by extrusion.

Additional objects of my invention will be brought out in the followingdescription of the same, taken in conjunction with the accompanying drawings wherein,

Fig. 1 is a view in section through one embodiment of a sash bar assembly incorporating the present invention, and depicting its manner of use;

Fig. 2 is a fragmentary view in section depicting a modified form of the embodiment of Fig. 1;

Fig. 3 is a three dimensional view of a clip constituting an important component of the sash bar assembly of the preceding figures; and

Fig. 4 is a view of a store front to which the present invention is applicable.

Referring to the drawings for details of my invention, the assembly 1 depicted in Fig. 1 involves a face member 3 having laterally spaced glass clamping edges 5. Such face member may consitute a composite member involving a shallow channel 7 with the glass clamping edges formed by inwardly directed flanges 9 along the edges of the channel while assembled within the channel, in the embodiment of Fig. 1, is a metal strip 11.

Opposing the face member is a backing member 13 of preferably narrower but deeper channel construction, such backing member including opposing side walls 15,

ice

2 17 and a joining end wall 19, with the side walls each terminating in a longitudinal glass clamping edge formed by an inwardly directed flange 21, for cooperation with one of the face member clamping edges to grip an edge of a pane of glass 23 inserted therebetween in the act of assembling the face member and backing member.

To bring the face member and the backing member into clamping relationship following installation of the pane of glass between cooperating clamping edges, the face member is provided with a longitudinal web 25 extending therefrom in the direction to be occupied by the backing member, so as to enter between the side walls of the backing member when these members are assembled.

In the embodiment of Fig. l, the web is formed integral with the inserted strip 11 of the face member, though the inserted strip element may be dispensed with, and the web formed integral with the shallow channel 7, as is depicted in connection with the embodiment of Fig. 2.

The web is formed with at least one hook engageable edge on each side thereof, preferably taking the form of a rib 27 of saw tooth section running substantially longitudinally of the web.

For cooperation with the web to effect the desired clamping action, I provide a plurality of U-shape spring clips 29 with each leg thereof terminating at its end in an inturned hook 31. Each such clip is adjustably threaded at its trough end to an adjusting screw 33, a plurality of which are provided at longitudinally spaced points in the joining wall of the backing member.

At its open end, the clip is spread a distance substantially greater than the greatest thickness of the web, the.

overall length of the clip and mounting screw being suflicient to cause the clip to straddle the web when the face member and the backing member are brought into cooperating relationship with respect to each other.

Within the backing member and running longitudinally of the same along each side wall thereof, is a cam rib 35 extending inwardly sufiicient to cause the hooked ends of a clip to approach the straddled web and grip the' same, as the supporting screw is rotated to draw the clip toward the joining wall of the backing member. By

thusly adjusting such screws, suflicient tension can be im' parted to the web to effect adequate clamping of a pane of glass between the face member and the backing member.

By forming the web with a plurality of parallel disposed clip engageable edges, in the form of parallel saw tooth ribs as depicted in Fig. 2, gripping and tensioning of the web by the clips will be effected more quickly,

thereby substantially reducing the time of installation.

In accordance with prior practice in eifecting a similar installation, the face member would be provided With a series of longitudinally spaced bolt receiving holes, While the backing member would be provided with a plurality of similarly spaced but threaded holes, and. the

two members would then be clamped together by passing a bolt through each of such face member holes and maneuvering the bolt to effect a threaded engagement.

with the corresponding threaded opening in the backing member. Inasmuch as such operation would have to be repeated a substantial number of times in an installa- Patented July 29, 1958' the simple operation of merely tightening the plurality of adjusting screws in the backing member, an operation which requires but one individual to perform.

Inasmuch as the web functions undertension, it may be made quite thin, in fact substantially thinner than the diameter of the bolts required in prior installations. The significance of this lies in the fact that the panes of glass to be installed may be cut fuller so as to extend deeper into the sash assembly, thereby rendering it less likely for such glass to be pulled out from its anchorage under heavy wind loads.

Further, with a rotatable bolt passing between the opposing edges of the panes of glass to be installed, any contact of the glass with the bolt could result in chipping and cracking of the glass. Such chipping or cracking becomes an impossibility in the applicants construction inasmuch as the web remains stationary with respect to the glass.

By way of further comparison with prior practice, the use of longitudinally spaced clamping bolts connecting the face member and backing member necessarily resulted in an uneven distribution of strains and stresses along the clamped edges of the glass, which quite often resulted in cracking or breaking of the glass. Breakage from such cause in the sash assembly of the present invention is minimized to the extreme, inasmuch as the clamping pressure along the edge of each pane of glass is more uniformly distributed, thereby imparting less strains and stresses.

In this connection, the web acts as a beam to strengthen the face member longitudinally thereby preventing deformation of the face member, particularly in the immediate area of stress as applied through the tension screws. Thus inasmuch as the clamping pressure along the edge of each pane of glass is more uniformly distributed, less strains and stresses are imparted thereto and breakage minimized.

Dismantling of the sash assembly of the present invention may be effected just as readily as the assembling of the components thereof, as such operation merely requires the unthreading of the various tensioning screws to relieve the tension on the web and permit the spring clips to expand to their original open position as shown in dotted lines in the embodiment of Figure 1.

The face member and backing member lend themselves to fabrication by extrusion and this applies also to the web, whether formed as part of the inserted strip or as an inte ral part of the shallow channel, thus enabling these components to be fabricated most accurately and economically.

In view of the foregoing, it will be apparent that the present invention fulfills all of the objec s attributed thereto, and while I have illustrated and described the same in considerable detail, the invention as so illustrated and described is subject to modification and alteration without departing from the fundamental principles involved, and I accordingly do not desire to be limited in my protection to such details as I have illustrated and described except as may be necessitated by the appended claims.

I claim:

1. A sash bar involving a face member, a backing member, means for forcing said members into clamping engagement following installation of glass between the same, said means involving a longitudinal web extending from said face member in the direction to be occupied by the backing member, tensioning means mounted on said backing member, a clip affixed to said tensioning means for engagement with said web following assembly of said members, and means on said backing member for forcibly closing said clip upon said web as its associated tensioning means is adjusted to tension the same.

2. A sash bar involving a face member, a backing member, means for forcing said members into clamping engagement following installation of glass between the same, said means including a longitudinal web extending from said facing member in the direction to be occupied by the backing member, a plurality of tensioning screws passing through said backing member in longitudinally spaced locations, and a substantially trough shaped spring clip adjustably threaded to each of said screws for straddling and engaging said web following assembly of said members.

3. A sash bar involving a face member, a backing channel member including opposing side walls and a. joining end wall, means for forcing said members into clamping engagement following installation of glass between the same, said means including a longitudinal web extending from said face member in the direction to be occupied by the backing member so as to enter between the side walls thereof when said members are assembled, said web having at least one hook engageable edge on each side thereof and extending in a generally longitudinal direction, a plurality of tensioning screws passing through the joining wall of said backing member in longitudinally spaced locations, and a substantially trough shaped spring clip adjustably threaded to each of said screws, each of said clips having opposing legs terminating in inwardly directed hook ends for engagement with the hook engageable edges of said web following assembly of said members.

4. A sash bar involving a face member, a backing channel member including opposing side walls and a joining end wall, means for forcing said members into clamping engagement following installation of glass between the same, said means including a longitudinal web extending from said face member in the direction to be occupied by the backing member so as to enter between the side walls thereof when said members are assembled, said web having at least one hook engageable edge on each side thereof and extending in a generally longitudinal direction, a plurality of tensioning screws passing through the joining wall of said backing member in longitudinally spaced locations, a substantially trough shaped spring clip adjustably threaded to each of said screws, each of said clips having opposing legs terminating in inwardly directed book ends for engagement with the hook engageable edges of said web following assembly of said members, and cam means on said side walls alongside each spring clip for forcibly closing said spring clip upon and tensioning said web as its associated tensioning screw is adjusted.

5. A sash bar involving a face member having laterally spaced glass clamping edges running longitudinally thereof, a backing channel member including opposing side walls and a joining end wall, said side walls each terminating in a longitudinal glass clamping edge for cooperation with one of the face member clamping edges to grip an edge of a pane of glass, means for forcing said members into clamping engagement following installation of glass between cooperating clamping edges, said means including a longitudinal web extending from said face member in the direction to be occupied by the backing member so as to enter between the side walls of said backing member when said members are assembled, said web having at least one hook engageable edge on each side thereof and extending in a generally longitudinal direction, a plurality of tensioning screws passing through the joining end Wall of said backing member in longitudinally spaced locations, a substantially trough shaped spring clip adjustably threaded to each of said tensioning screws, each of said clips having opposing legs terminating in inwardly directed hook ends for engagement with the hook engageable edges of said web following assembly of said members, and cam means on said side walls alongside each spring clip for forcibly closing said spring clip upon and tensioning said web as its associated tensioning screw is adjusted.

6. A sash bar involving a face member having laterally spaced glass clamping edges running longitudinally thereof, a backing channel member including opposing side walls and a joining end wall, said side walls each terminating in a longitudinal glass clamping edge for cooperation with one of the face member clamping edges to grip an edge of a pane of glass, means for forcing said members into clamping engagement following installation of glass between cooperating clamping edges, said means including a longitudinal web extending from said face member in the direction to be occupied by the backing member so as to enter between the side walls of trough shaped spring clip adjustably threaded to each of said tensioning screws, each of said clips having opposing legs terminating in inwardly directed hook ends for engagement with the hook engageable edges of said web following assembly of said members, and cam means on said side walls alongside each spring clip for forcibly closing said spring clip upon and tensioning said web as its associated tensioning screw is adjusted.

References Cited in the file of this patent UNITED STATES PATENTS 1,950,822 Siegwarth Mar. 13, 1934 2,620,525 Ketchum Dec. 9, 1952 FOREIGN PATENTS 352,263 Germany Apr. 22, 1922