US3137490A

US3137490A - Supporting spring cushion structure for a seat

Info

Publication number: US3137490A
Application number: US240236A
Authority: US
Inventors: Clair S Reed
Original assignee: Van Dresser Specialty Corp
Current assignee: Van Dresser Specialty Corp
Priority date: 1962-11-27
Filing date: 1962-11-27
Publication date: 1964-06-16
Anticipated expiration: 1981-06-16

Description

c. s. REED June 16, 1964 Filed Nov. 27

2 Sheets-Sheet 1 va/Hwy T a 2 4L c a 1 @u l T fl U 6 a 1m L +1 I 1 INVENTOR. cue/1? 5. R550 A T'TOR/V s c. s. REED 3,137,490 SUPPORTING SPRING CUSHION STRUCTURE FOR A SEAT June 16, 1964 2 Sheets-Sheet 2 Filed Nov. 27, 1962 IQ E=% INVENTOR. (AA/R S. RIA'D BY 0314425., MI

United States Patent Ofiice 3,137,490 Patented June 16, 1964 3,137,490 SUPPORTING SPRING CUSHION STRUCTURE FOR A SEAT Clair S. Reed, Wayne, Mich., assignor to Van Dresser Specialty Corporation, Warren, Mich., a corporation of Michigan Filed Nov. 27, 1962, Ser. No. 240,236 10 Claims. (Cl. 267-110) This invention relates generally to spring cushions, and refers more particularly to an improved supporting spring cushion structure for a seat.

One of the essential objects of the invention is to provide an improved supporting spring cushion structure of the type mentioned wherein a single upwardly arched composite layer, embodying reinforcing load supporting heavy gauge spring wires, serves as the sole supporting spring structure for the seat and provides the desired cushioning effect.

Another object is to provide a supporting spring cushion structure wherein the upwardly arched composite layer comprises a single sheet of fabric, transversely extending heavy gauge border wires at opposite ends of said sheet, and separate longitudinally extending reinforcing load supporting heavy gauge spring wires threaded in substantially parallel relation to each other through the fabric and terminally connected to said border wires.

Another object is to provide a supporting spring cushing structure wherein strips extend lengthwise of and are secured to the transversely extending members of a seat frame, and tongues project from said strips at longitudinally spaced points thereof, embrace said border wires, and have free ends pressed against said strips to hold the single composite layer in upwardly arched position.

Another object is to provide a supporting spring cushion structure that takes the place of the usual separate plain insulators and their separate spring supports.

Another object is to provide an improved supporting spring cushion structure that is simple in construction, economical to manufacture, and durable and efficient in use.

Other objects, advantages and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawings wherein:

FIGURE 1 is a top plan view of a supporting spring cushion structure for a seat.

FIGURE 2 is a longitudinal section view taken substantially on the line 22 of FIGURE 1.

FIGURE 3 is a transverse sectional view taken substantially on the line 33 of FIGURE 1.

FIGURE 4 is a transverse sectional view taken substantially on the line 44 of FIGURE 1.

FIGURE 5 is a fragmentary longitudinal sectional view taken substantially on the line 55 of FIGURE 1.

FIGURE 6 is a fragmentary longitudinal sectional view taken substantially on the line 66 of FIGURE 1.

FIGURE 7 is a fragmentary perspective view of the left hand transversely extending side member and the transverse extending metal strip secured thereto, and showing one of the tongues of the strip in open position to receive a border wire, and showing another of said tongues of the strip in crimped embracing relation to a border Wire.

Referring now to the drawings, A is a metallic supporting seat frame having spaced parallel longitudinally extending tubular front and rear members 10 and 11 respectively, and having spaced parallel transversely extending

tubular side members

12 and 13 respectively extending between and secured to said longitudinally extending members 10 and 11 at opposite ends thereof.

14 and 15 are transversely extending metal strips of substantially 0 cross section embracing and Welded in surface to surface relation to the curved inner sides 16 and 17 respectively of the transversely extending

members

12 and 13 intermediate the ends thereof. 18 is a longitudinally extending substantially channel-shaped strip located upon the outer side of and embracing the front longitudinally extending member 10. Preferably the upper and

lower side walls

19 and 20 respectively of the channel-shaped strip 18 are welded to the longitudinally extending member 10 at substantially diametrically opposite sides thereof, and the lower side wall 20 of said strip projects inwardly beyond the longitudinally extending member 10 and is provided at longitudinally spaced points adjacent its inner edge with aligned elongated slots 21. 22 is a longitudinally extending relatively wide metal strip welded to theouter side of the rear longitudinally extending member 11 and curving transversely downwardly and inwardly below and welded to the undersides of the transversely extending

members

12 and 13. Preferably this strip 22 is provided at longitudinally spaced points adjacent its inner edge with aligned elongated slots 23. i

24 is a single longitudinally extending compositelayer occupying the space between the

metal strips

14, 15, 18 and 22 and serving as the sole supporting spring structure for a seat. As shown, this layer 24 comprises a longitudinally extending substantially rectangular sheet 25 of fabric, transversely extending heavy gauge border wires .strength required to serve as spring supports.

26 and 27 at opposite ends of the sheet, and transversely spaced longitudinally extending reinforcing load carrying heavy gauge spring wires 28 threaded through the fabric sheet 25 throughout its length and terminally connected to said

border wires

26 and 27.

The sheet 25 of fabric may be burlap or any other suitable material. The

border wires

26 and 27 arepreferand may be approximately /s in diameter.

Struck out from the transversely extending

metal strips

14 and 15 at longitudinally spaced points thereof are aligned substantially L-

shaped tongues

30 and 31 that initially extend upwardly through the sheet 25 of fabric to receive the

border wires

26 and 27 of the single composite layer 24, that thereafter are bent to embrace said

border wires

26 and 27, and are then pressed against the inner sides of the transversely extending

metal strips

14 and 15 to secure said

border wires

26 and 27 in fixed relation to the transversely extending

metal strips

14 and 15.

Before the single composite layer 24 is secured by the

tongues

30 and 31 to the transversely extending

metal strips

14 and 15 on the

side members

12 and 13 to the seat frame, the single composite layer 24 is flat, and the distance between the

border wires

26 and 27 is greater than the distance between the

tongues

30 and 31 of the transversely extending

metal strips

14 and 15. Thus the single composite layer 24 is arched upwardly throughout its length when it is secured by the

tongues

30 and 31 to the transversely extending

metal strips

14 and 15 on the

side members

12 and 13 of the seat frame A. This is accomplished by first placing the border wire 26 in engagement with the L-shaped tongues 30 when the latter initially extend upwardly. Then such tongues 30 are bent to embrace the border wire 26, and are then pressed against the inner side of the transversely extending strip 14 to anchor the border wire 26 to said strip 14. Then the single composite layer 24 is bent or arched upwardly through- ,out its length so that the other border wire 27 may be placed in engagement with the L-shaped tongues 31 when they initially extend upwardly. Such tongues 31 are bent to embrace the border wire 27, and are then pressed against the inner side of .the transversely extending strip 15 to anchor the'border wire 27 to said strip. The single composite layer 24 will then beheld in upwardly arched position.

Thereafter, the'forward portion 33 of the fabric 25 is bent downwardly throughout its length and is secured to the lower side wall 20 of the longitudinally extending channel-shaped strip 18 by means of hog rings 34 extending through the elongated slots 21 in said lower side wall 20, and the rear portion 35 of the fabric is bent downwardly through its length and is secured to the lower inner edge of the longitudinally extending relatively wide metal strip 22 by meansof hog rings 36 extending through the elongated slots 23 in said strip.

In use, the upwardly arched single composite layer 24 serves as a supporting cushion for the seat upholstery (not shown), such as the usual cotton layer, sponge rubber layer, and exterior trim of a seat.

What I claim as my invention is:

1. The combination with a supporting frame having spaced parallel longitudinally extending front and rear members and having spaced parallel transversely extending side members extending between and secured to said longitudinally extending members at opposite ends thereof, oftransversely extending strips extending lengthwise of and secured to the inner sides of said transversely extending members, longitudinally extending strips extending lengthwise of and secured to said longitudinally extending members, portions of said longitudinally extending strips projecting inwardly from said longitudinally extending members and terminating adjacent to the opposite ends of said transversely extending members, a single longitudinally extending composite layer arched upwardly throughout its length, occupying the space between the strips aforesaid, and comprising a longitudinally extending substantially rectangular sheetof fabric, transversely extending heavy gauge border wires at opposite ends of said sheet, and transversely spaced longitudinally extending reinforcing load carrying heavy gauge spring wires threaded through said sheet throughout its length and terminally connected to said border wires, means securing the border wires of said composite layer to said transversely extending strips, and means securing the fabric of said composite layer to theinwardly projecting portions of said longitudinally extending strips.

2. The structure defined in claim 1, wherein the securing means for said border wires comprises open return bent tongues projecting from said transversely extending strips and embracing said border wires.

3. The structure defined in claim 1, wherein the securing means for said fabric comprises hog n'ngs extending through said fabric and extending through openings in the inwardly projecting portions of said longitudinally extending strips.

4. The structure defined in claim 1, wherein the securing means for said border wires comprises tongues struck out from said transversely extending strips at longitudinally spaced points thereof.

5. The structure defined in claim 1, wherein the Seouling means for said border wires comprises tongues integral with said transversely extending strip, embracing said border wires, and pressed against the inner sides of said transversely extending strips.

6. The structure defined in claim 1, wherein the border wires are substantially parallel to said transversely extending strips and are covered with paper.

7. The structure defined in claim 1, wherein the securing means for said fabric comprises fasteners having portions engaging said fabric and having portions engaging the adjacent edges of openings in the inwardly projecting portions of said longitudinallyextending strips.

7 8. The structure defined in claim 1, wherein the transversely extending members have curved'inner sides, and the transversely extending strips are substantially C-shape in cross section and embrace and are welded in surface to surface relation to the curved inner sides of said transversely extending members. 7

9. The structure defined in claim 1, wherein one of said longitudinally extending strips is a channel-shaped member located upon the outer side of and embracing the front longitudinally extending member, and the upper lower side walls of said one channel-shaped strip are welded to said front longitudinally extending member at substantially diametrically opposite sides thereof.

10. The structure defined in claim 1, wherein one of saidlongitudinally extending strips is welded 'to the outer side of the rear longitudinally extending member and is transversely curved downwardly and inwardly below said rear longitudinally extending member.

Claims

1. THE COMBINATION WITH A SUPPORTING FRAME HAVING SPACED PARALLEL LONGITUDINALLY EXTENDING FRONT AND REAR MEMBERS AND HAVING SPACED PARALLEL TRANSVERSELY EXTENDING SIDE MEMBERS EXTENDING BETWEEN AND SECURED TO SAID LONGITUDINALLY EXTENDING MEMBERS AT OPPOSITE ENDS THEREOF, OF TRANSVERSELY EXTENDING STRIPS EXTENDING LENGTHWISE OF AND SECURED TO THE INNER SIDES OF SAID TRANSVERSELY EXTENDING MEMBERS, LONGITUDINALLY EXTENDING STRIPS EXTENDING LENGTHWISE OF AND SECURED TO SAID LONGITUDINALLY EXTENDING MEMBERS, PORTIONS OF SAID LONGITUDINALLY EXTENDING STRIPS PROJECTING INWARDLY FROM SAID LONGITUDINALLY EXTENDING MEMBERS AND TERMINATING ADJACENT TO THE OPPOSITE ENDS OF SAID TRANSVERSELY EXTENDING MEMBERS, A SINGLE LONGITUDINALLY EXTENDING COMPOSITE LAYER ARCHED UPWARDLY THROUGHOUT ITS LENGTH, OCCUPYING THE SPACE BETWEEN THE STRIPS AFORESAID, AND COMPRISING A LONGITUDINALLY EXTENDING SUBSTANTIALLY RECTANGULAR SHEET OF FABRIC, TRANSVERSELY EXTENDING HEAVY GAUGE BORDER WIRES AT OPPOSITE ENDS OF SAID SHEET, AND TRANSVERSELY SPACED LONGITUDINALLY EXTENDING REINFORCING LOAD CARRYING HEAVY GAUGE SPRING WIRES THREADED THROUGH SAID SHEET THROUGHOUT ITS LENGTH AND TERMINALLY CONNECTED TO SAID BORDER WIRES, MEANS SECURING THE BORDER WIRES OF SAID COMPOSITE LAYER TO SAID TRANSVERSELY EXTENDING STRIPS, AND MEANS SECURING THE FABRIC OF SAID COMPOSITE LAYER TO THE INWARDLY PROJECTING PORTIONS OF SAID LONGITUDINALLY EXTENDING STRIPS.