US2117748A

US2117748A - Spring cushion structure

Info

Publication number: US2117748A
Application number: US101379A
Authority: US
Inventors: Theodore D Stewart
Original assignee: LA Young Spring and Wire Corp
Current assignee: LA Young Spring and Wire Corp
Priority date: 1936-09-18
Filing date: 1936-09-18
Publication date: 1938-05-17
Anticipated expiration: 1955-05-17

Description

May 17, 1938. T. D. STEWART 2,117,748

SPRING CUSHION STRUCTURE Filed Sept. 1a, 1956 2 Sheets-Sheet 1 I NVENTOR. 735017052 [2 575M075? ATTORNEYS May 17, 1938. I D STEWART 2,117,748

SPRING CUSHION STRUCTURE Filed Sept. 18, 1956 2 Sheets-Sheet 2 M IN VENTOR. THEUDUEE 17. 521E WflHT Patented May 17, 1938 UNiTED STATES PATENT OFFIQE SPRING CUSHION STRUCTURE troit, Mich.

Application September 18, 1936, Serial No. 101,379

15 Claims.

The main objects of this invention are:

First, to provide a spring cushion structure in which the spring assembly may be assembled as a unit and the upholstery quickly and rapidly applied thereto.

Second, to provide a structure of the class or type described which renders it possible to upholster a cushion Without the employment of skilled labor.

Third, to provide a structure of this type which is very economical in its parts and at the same time strong and rigid.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

Fig. 1 is a fragmentary View partially in vertical section on a line corresponding to line l--l of Fig. 2.

2 is a fragmentary view in horizontal sec ticn on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary bottom perspective of one of the border frame elements of my spring structure.

Fig. 4 is a fragmentary perspective view of a modified form or embodiment of my invention.

Fig. 5 is a fragmentary view illustrating the manner in which upholstery is secured in the modified form or embodiment of my invention.

Fig. 6 is a fragmentary top plan view illustrating the relation of the spring supports and the springs to the border frame, certain of the springs being indicated by dotted lines only and other springs being conventionally shown.

Fig. 7 is a fragmentary perspective view further illustrating the frame and spring supporting features of the invention.

In the embodiment of my invention illustrated, numeral l designates generally the border frame which comprises

opposed side members

2, 2, and

end members

3, 3, joined together to form a continuous frame structure. These border frame members are formed of sheet metalthat is, metal of uniform thickness and are of elongated s-shape in cross section, the outer edges of the strips from which the members are formed being turned upwardly and inwardly to provide an inwardly facing spring securing channel 4 and their inner edges being turned downwardly and outwardly to provide outwardly facing upholstery securing channels 5, the web portions 6 between the channels being of substantially greater width than the combined width of the two channel flanges l and 8 providing a substantial ledgelike surface to which the cross members 9 may be secured as by spot welding indicated at Hi, there being an exposed flat portion of the web lying between the channels to permit the effective welding operations.

The spring supporting grid consisting of the longitudinal wires H and the transverse wires l2 are arranged upon the cross bars with the ends of the grid wires lapping upon and welded to the border frame webs at I3. These ledges or webs also provide an efiective surface to which the plate-like corner irons M are secured by welds indicated at E5.

The cross sectional shape of the border frame and the cross members and grid members welded thereto form an exceedingly rigid frame even when formed of quite light gauge stock.

The body springs it are arranged upon and secured to the supports as by means of clips I! and their outer springs are lapped upon the border frames and secured thereto by clamping the inwardly facing flange l of the spring securing channel thereon as indicated at l8.

Upholstery securing tongues or prongs H! are struck downwardly from the webs 6 with their ends lying in opposed relation to the upholstery securing channel 5 above and preferably quite close to the flange 8 of the upholstery securing channel.

The upholstery 20 is provided with a skirt portion 2| which is wrapped around the border frame as clearly shown in Figs. 1 and 5 and provided with a beaded edge 22 which is forced into the channel 5 with the bead lying at the rear of the tongues l9. The tongues and the upholstery and beading material will yield sufficiently so that the upholstery may be pushed into the channel but it is effectively retained therein by the tongues coacting with the channel.

The flange 8 of the upholstery securing channel may be clamped upon the channel as an additional securing means but that is not essential to effectively secure the upholstery when the tongues are employed.

In the embodiment of my invention shown in Figs. 4 and 5, the tongues are omitted and the flange 8 clamped upon the bead or upholstery as shown at 23, Fig. 5. While this provides an effective securing means for the upholstery it necessitates the use of an air hammer or pliers or the like and is not as expeditious as when the tongues are present. In both embodiments, however, the structure is very rigid and avoids the necessity of tacking strips and upholstery securing means other than the rim itself.

I have illustrated and described my improvements in an embodiment which I have found very practical. I have not attempted to illustrate or describe other embodiments or adaptations as it is believed that this disclosure will enable those skilled in the art to embody or adapt my improvements as may be desired. 1

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a spring cushion structure, the combination of a border frame comprising fixedly connected side and end members, said frame members being of elongated S-section disposed horizontally and providing relatively wide fiat web portions, an upper inwardly facing spring supporting channel at the outer edge of the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, the webs having downwardly and inwardly directed tongues struck therefrom and disposed with their tips in opposed relation to the flange of the upholstery securing channel, cross bars extending between said side members arranged upon and welded to the webs thereof, a spring supporting wire grid disposed upon said cross member with the ends of the grid wires lapped upon and welded to said webs, a plurality of coiled body springs on said grid, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt provided with a beaded edge disposed within said upholstery securing channel with said tongues in retaining engagement therewith.

2. In a spring cushion structure, the combination of a border frame comprising fixedly connected side and end members, said frame members being of elongated S-section disposed horizontally and providing relatively wide flat web portions, an upper inwardly facing spring supporting channel at the outer edge of the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, the webs having downwardly and inwardly directed tongues struck therefrom and disposed with their tips in opposed relation to the flange of the upholstery securing channel, a spring supporting wire grid disposed with the ends of the grid wires lapped upon and welded to said webs, a plurality of coiled body springs on said grid, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt provided with a beaded edge disposed within said upholstery securing channel with said tongues in retaining engagement therewith.

3. In a spring cushion structure, the combination of a border frame comprising fixedly Connected side and end members, said frame members being of elongated S-section disposed horizontally and providing relatively wide flat web portions, an upper inwardly facing spring supporting channel at the outer edgeof the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, the webs having downwardly and inwardly directed tongues struck therefrom and disposed with their tips in opposed relation to the flange of the up holstery securing channel, a spring support lapped upon and welded to said webs, a plurality of coiled body springs on said support, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt provided with a beaded edge disposed within said upholstery securing channel with said tongues in retaining engagement therewith.

4. In a spring cushion structure, the combination of a border frame comprising fixedly connected side and end members, said frame members being of elongated S-section disposed horizontally and providing relatively wide flat web portions, an upper inwardly facing spring supporting channel at the outer edge of the web and a. lower outwardly facing upholstery securing channel at the inner edge of the web, both said channels being substantially shallower than the web is wide, cross bars extending between said side members arranged upon and welded to the webs thereof,-a spring supporting wire grid disposed upon said cross members with the ends of the grid wires lapped upon and secured to said webs, a plurality of coiled body springs, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt disposed with its edge secured within said upholstery securing channel.

5. In a spring cushion structure, the combination of a border frame comprising fixedly connected side and end members, said frame members being of elongated S-section disposed horizontally and providing relatively wide fiat web portions, an upper inwardly facing spring supporting channel at the outer edge of the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, both said channels being substantially shallower than the webis wide, a spring supporting wire grid disposed with the ends of the grid wires lapped upon and secured to said webs, a plurality of coiled body springs, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt disposed with its edge secured within said upholstery securing channel.

6. In a spring cushion structure, the combination of a border frame comprising fixedly connected side and end members, said frame members being of elongated S-section disposed horizontally and providing relatively wide flat web portions, an upper inwardly facing spring supporting channel at the outer edge of the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, said frame members having spring tongues struck therefrom adjacent said upholstery securing channel and restricting the opening therein, a plurality of coiled body springs, the bottom coils of certain of said body springs being clamp-ed within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt disposed with its edge in said upholstery securing channel and held therein by said spring tongues.

'7. A spring cushion structure comprising a border frame member of elongated S-section disposed horizontally and providing a relatively wide flat web portion, an upper inwardly facing spring supporting channel at the outer edge of the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, the web having downwardly and inwardly directed tongues struck therefrom and disposed with their tips in opposed relation to the flange of the upholstery securing channel, a spring support disposed upon and welded to said web, coiled body springs arranged on said support, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt provided with a beaded edge disposed within said upholstery securing channel with said tongues in retaining engagement therewith.

8. A spring cushion structure comprising a border frame member of elongated S-section disposed horizontally and providing a relatively wide flat web portion, an upper inwardly facing spring supporting channel at the outer edge of the web and a lower outwardly facing upholstery securing channel at the inner edge of the web, said frame member having spring tongues struck therefrom adjacent said upholstery securing channel and restricting the opening therein, a spring support disposed upon and welded to said web, coiled body springs arranged on said support, the bottom coils of certain of said body springs being clamped within the inwardly facing spring supporting channel, and an upholstery covering for said springs having a depending skirt with its edge secured within said upholstery securing channel.

9. A border frame for spring structures comprising a sheet metal strip of substantial width having one longitudinal edge turned upwardly and inwardly to provide a spring securing channel and the other longitudinal edge turned downwardly and outwardly to provide an outwardly facing upholstery securing channel,.the web of said strip being substantially wider than the combined width of the channel flanges and having tongues struck downwardly therefrom with their tips in opposed relation to the flange of the upholstery securing channel and adapted to co act therewith to retain the edge of an upholstery skirt engaged within the channel.

10. A border frame for spring structures comprising a sheet metal strip of substantial width having one longitudinal edge turned upwardly and inwardly to provide a spring securing channel and the other longitudinal edge turned downwardly and outwardly to provide an outwardly facing upholstery securing channel, the web of said strip having tongues struck downwardly therefrom with their tips in opposed relation to the upholstery securing channel and adapted to coact therewith to retain the edge of an upholstery skirt engaged within the channel.

11. A sheet metal border frame for a spring cushion structure having upholstery draped thereover comprising strips of S-cross section se cured at their ends-to one another, said strips having an integral upper spring coil receiving channel facing inwardly of the frame, an inte gral lower upholstery securing channel facing outwardly of the frame, and an elongated ledge integrally joined to said channels and lying in the plane of the frame, said ledge having resilient tongues punched downwardly therefrom, said tongues restricting the opening in said last named channel, yielding to permit insertion of the upholstery in the channel, and securing the upholstery therein after insertion.

12. A border frame for a spring cushion structure comprising a strip of S-cross section having an integral upper spring coil receiving channel facing inwardly of the frame, an integral lower upholstery securing channel facing outwardly of the frame, and an elongated ledge integrally joined to said channels, said ledge having spaced prongs punched downwardly therefrom cooperative with said last named channel to secure upholstery therein, said prongs normally decreasing the opening in the channel at the points where they are located.

13. A sheet metal border frame for cushion structures comprising strips secured at their ends to one another to form a rectangular outline, said strips being provided with a spring coil receiving channel, a second upholstery receiving channel, and an elongated ledge connected to said channels and lying in the plane of the frame, said ledge having projections thereon cooperative with said last named channel by decreasing the effective opening thereof to secure upholstery therein, said upholstery receiving channel being deformable to clamp upholstery therein.

14. A sheet metal border frame for cushion structures comprising strips secured at their ends to one another to form a rectangular outline, said strips being provided with a spring coil receiving channel, a 'second upholstery receiving channel, and an elongated ledge connected to said channels and lying in the plane of the frame, said upholstery receiving channel being deformable to clamp upholstery therein, said channels lying above and below the plane of the ledge and being substantially shallower than the ledge is wide.

15. A sheet metal border frame for cushion structures comprising strips secured at their ends to one another to form a rectangular outline, said strips being provided with a spring coil receiving channel, a second upholstery receiving channel, and an elongated ledge connected to said channels and lying in the plane of the frame, said channels lying above and below the plane of the ledge and being substantially shallower than the ledge is wide.

THEODORE D. STEWART.