US2449500A

US2449500A - Chair seat

Info

Publication number: US2449500A
Application number: US591011A
Authority: US
Inventors: Walter E Nordmark
Original assignee: American Seating Co
Current assignee: American Seating Co
Priority date: 1945-04-30
Filing date: 1945-04-30
Publication date: 1948-09-14
Anticipated expiration: 1965-09-14

Description

Sept. M, 1948. w. E. NORDMARK v 2,449,59Q

V CHAIR SEAT Filed April 50, 1945 Y 2 Shets-Sheet 1 INVENTOR v %lier E. JVOrdmav-k Syn/4 TTORNEY p M, 1948. w. E. NQRDMARK 2,449,500

CHAIR SEAT Filed April 50, 1945 2 SheetsSheet 2 INVENTOR Eadie; E. Nordmavk ATTORNEY Patented Sept. 14, 1948 CHAIR, SEAT Walter E. Nordmark, Grand Rapids, Mich.,- 215- signor to American Seating Company, Grand Rapids, Mich, a corporation of New Jersey 1 Application April so, 1945, Serial No. 591,011

12. Claims. 1

The presentinvention relates to chair seats and more particularly to theater chair. seats.

The primary objects of the invention are to provide animproved seat mounting frame for theater chair seats; to provide such a frame which may economically be made up from several sheet metal members; to provide such a seat frame having means whereby the seat springs and upholstery may readily be assembled to the frame to form a seat; to providesuch a seat which may readily be assembled toor disassembled from a seat supporting pan turnably mounted on supporting standards; and to provide such a chair seat which is simple and sturdy in construction, economical in manufacture and attractive in appearance. l

These objects are obtained by the illustrative embodiment of theinvention shown in the accompanying drawings, wherein:

Figure 1 is a fragmentaryperspective view of a theater type chair having a seat of the character above indicated;

Figure 2 is a fragmentary perspective vie showing the chair seat in section taken on line 2-2 of Figure 1;

Figure 3 is a top planview of the chair seat with a portion of the upholstery thereof broken away to disclose the seat frame below;

Figure 4 is an enlarged central vertical sectional view of the chair seat, taken. on line 4-4 of Figure 1;

Figure 5 is an enlarged sectional view taken on line 55 of Figure 3 Figure 6 is an enlarged sectional view taken on line 6-6 of Figure 3; V l

Figure '7 is an enlarged top plan view of the left front corner of the seat frame;

Figure 8 is an enlarged sectional view thereof taken on lines 8-B of Figures 3 and 7;

Figure 9 is an enlarged sectional view of'the. seatframe per se taken on lines 9-9 of Figures spaced vertical standards I only one of which is here shown, a conventional chair back generally designated 2 and consisting of a back plate 3 secured to the standards by means of screws 4, padding 5, and an upholstery cover 6. The chair seat is mounted on a seat supporting pan I of stamped sheet metal having conventional means indicated at 8 for turnably mounting the seat on the chair standards I. The upper peripheral rim 9 of the pan 1 is curled inwardly and downwardly.

A seat frame it) of generally rectangular configuration may be integrally formed of stamped sheet metal, but preferably and as here shown this seat frame consists of a front member II, side members I2, I3 and a rear memberfld, each of which members is provided with a longitudinally extending, downwardly stamped strengthening rib l5. As best seen in Figures 7 and 9, which show the front member I I and side member I2 for the purpose of illustration, the adjacent pairs of these frame members have overlapping corner portions IS on the front member II and I! on the side member I 2, the strengthening ribs I5 of which corner portions are nested together. One of these members, as here shown the side member I2, is provided with an inner flange is which is turned upwardly and outwardly over the corner portion I6 of the front member II, and an outer flange I9 which is turned upwardly and inwardly, the flanges I8 and I9 thus gripping the corner portion it of the front member I I therebetween and securing these two members in assembly. The other corners of the seat frame are similarly connected.

In the front member II and the rear member M of the seat frame Iii, the strengthening ribs I 5 are drawn downwardly and outwardly to form tongues 20, 2I in these members respectively, which tongues may be snapped between, and into engagement beneath the springable front and rear portions of the seat pans rim 9, as best seen in Figures 5 and 6. The outer marginal edges of the front member II and the rear member I4 are turned upwardly and inwardly so that these members present smooth outer edges.

The side members I2, I3 of the seat frame ID, are each formed with an upstanding web 22 (see Figures 2 and 4) which is tapered from front to rear so that the forward portion of each is of greater height than the rearward portion, and with inwardly extending top and bottom flanges designated 23 and 24 respectively. The top flanges 23 of these side members IZ, I3 have spaced extensions which are curled upwardly and outwardly to form hooks 25 for the attachment of upwardly arched sinuous springs 26 which span the seat frame from side to side and which are here shown as five in number.

The inner marginal edges of the front member II, the rear member I4, and the bottom flanges 24 of the side members l2 of the seat frame, are cut out to form inwardly extending spurs 21.

The seat upholstering comprises a sheet of upholstery material 28 of burlap or the like stretched over the springs 26 and around the seat frame It and attached to the spurs 21, padding 29 of hair or the like over and around the burlap, and an upholstery sheet or cover 30 of leather or the like stretched over the padding 29 and around the seat frame Ill and likewise attached to the spurs 27. The

upholstery sheets

28 and 30 are pierced at their points of attachment to the spurs 21.

Means for reenforcing the forward portion of the seat in such manner that this portion is somewhat more resilient than the seat as a. whole,

comprises a resilient wire 3i having its opposite ends secured to hooks 32 on the side members i2; i3 of the seat frame, the hooks 32 being formed similarly to the hooks 25. The middle portion of the wire 31 is extended forwardly and upwardly beyond the foremost spring 26' and is attached to said springby means of a. connecting wire 33. This wire 33 has a U-shaped' rear part 34- interlock-ing with the" centermost undulations of the spring 26 and has laterally projecting parts 35 secured to the resilient wire 3|- by means of clips-36.

It will be seen that: the upholstered seat is slightly higher in the front than in the rear, this form being maintained by a combination of the resilient wire 3|, the rearward-1y tapering web 22 of the side frame members and the resultant decline in seat springs toward the rear, said springs being of equal length, and the increased gap between the rear spring 26 and therearmost part of the seat.

The relatively wide bottom flanges 2d: of the sid frame members l2 which flanges are wider than the height of the webs 22, and thestrengthening ribs i5, combine to lend rigidly to the seat frame and thus prevent any inward bowing at the sides thereof and eliminate the necessity for struts between the sides of the frame.

The invention provides a chair seat in which the upholstered seat and seattrame may be removed for repair or replacement without removing the seat supporting means from the stand-- aids, and the entire seat assembly issimple and sturdy in construction and reasonably economical in manufacturer While but one specific embodiment of the invention has been herein shown and described-,. it will be understood that numerous details of construction may be altered or omitted. without departing from the spirit of the invention asthe same is defined by the following claims.

I claim:

1. In a. seat structure, a seat. supporting pan. having an inwardly turned rim, a seat frame supported on v the. rimof the seat supporting pan, said frame having a. portionthereof formed with a. downwardly andv outwardly extending, tongue engaging beneath the inwardly turnedv rim of the seat pan, and means on the seat frame. for the attachment. of the seat.

2.. In. a seat structure, a seat supporting pan having aninwardly turned rim, a seat frame supported on the rim of, the seat supporting pan, said frame having front and rear portions each formed with a downwardly and outwardly ex,-

tending tongue engaging beneath the inwardly turned rim of the seat pan, and means on the seat frame for the attachment of the seat.

3. In a seat structure, a seat supporting pan having an inwardly turned springable rim, a seat frame supported on the rim of the seat supporting pan, said frame having front and rear portions each formed with a downwardly and. outwardly extending tongue adapted to be forced between and to engage beneath the front and rear portions of the seat pans springable rim, and means on the seat frame for the attachment of the seat.

4. In a seat structure, a seat frame having side portions provided with spaced hooks thereon and with inwardly extending spurs, a plurality of springsspanning the seat frame from side to side and havingtheir opposite ends attached to said hooks, padding over the springs, and an upholstery cover stretched over the padding and at tached to the spurs.

52, In a'seatstructure, a seat frame having side portions each comprising an upstanding web and inwardly extending top and bottom flanges, said top flanges I having upwardly and 'outwardiy turned portions forming hooks; and said bottom flanges having inwardly extending spurs, a' pinrallty of springs spanning the seat side to side and having their opposite; ends: attached to said hooks, padding overtne springs; and an upholstery cover stretched over the-paw ding and attached to thespurs.

6. In a seat structure, a seat-frame having side ortions each comprising an u standing web and inwardly extending to and bottomfianges, one of said flanges being of greater width than the height of the web, said top flanges havingupwardly and outwardly turned portions forming hooks, and said bottom flanges having inwardly extending spurs, a plurality offspring spanning the seat frame from side-to side and having their opposite ends attached tosaidhooks, padding over the springs, and an upholstery cover stretched over the padding and attached to the spurs. v

7. In a, seat structure, a seat frame having side portions each comprising an upstanding Web and inwardly extending top and bottom flanges; said web being of greater height in its forward portion than initsrearward portion, said topflanges having upwardlyand outwardly turned portions forming hooks, and said bottom flanges having inwardly extending spurs, a plurality of springs spanning the seat frame from side to side and" having their opposite ends attached to said hooks, padding over the springs, and; an upholstery cover stretched over the padding and attached to the spurs. g

8. In a seat structure, aseat frame having side portions each comprising, an upstanding web inwardly extending top and bottom flanges, said top flanges having upwardly and outwardly turned portions forming hooks, and. said. bottom flanges having longitudinally extending strength, ening ribsv and inwardly extending spurs, a pillrality of springs spanning the seat frame from side to side and having, their. opposite ends attached to said hooks, padding. over the springs, and an upholstery cover stretched over the padding and attached to the spurs.

9'; .In a seat structure, a seat frame having side portions provided with spaced hooks thereon and with inwardly extending spurs, a plurality of springs spanning the seat frame'from side to sideand having their opposite ends attached to said hooks,

a sheet of upholstery material stretched over the springs and attached to the spurs, padding over said sheet, and an upholstery cover stretched over the padding and attached .to the spurs.

10. Ina seat structure, a seat frame having side portions provided with spaced hooks thereon and with inwardly extending spurs, a plurality of upwardly arched sinuous springs spanning the seat frame from side to side and having their opposite ends attached to said hooks, a resilient wire having its opposite ends secured to the side portions of the seat frame and its middle portion extended forwardly and upwardly beyond the foremost spring, a sheet of upholstery material stretched over the springs and the resilient wire and attached to the spurs, pad-ding over said sheet, and an upholstery cover stretched over the padding and attached to the spurs.

11. In a seat structure, a seat frame comprising front, rear and side members, each adjacent pair of said members having overlapping corner portions, and one of the members of each pair having at opposite sides of the corner portion thereof turned-over flanges embracing therebetween the corner portion of the other member of said pair.

12. In a seat structure, a seat frame having side 6 portions provided with spaced hooks thereon, a plurality of upwardly arched sinuous spring-s spanning the seat frame from side to side and having their opposite ends attached to said hooks, a resilient wire having its opposite ends secured to the side portions of the seat frame and its mid- :dle portion extended forwardly and upwardly beyond the foremost spring, a sheet of upholstery material stretched over the springs and the resilient wire and attached to the seat frame, padding over said sheet, and an upholstery cover stretched over the padding and attached to the seat frame. I

WALTER E. NORDMARK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 782,841 Fortiner Feb. 21, 1905 2,146,136 Foote Feb. 7, 1939 2,199,489 Greene et a1 May 7, 1940 2,217,290 Nordmark Oct. 8, 1940 2,237,585 Fries Apr. 8, 1941