|Publication number||US2871916 A|
|Publication date||Feb 3, 1959|
|Filing date||Jul 24, 1957|
|Priority date||Jul 24, 1957|
|Publication number||US 2871916 A, US 2871916A, US-A-2871916, US2871916 A, US2871916A|
|Original Assignee||Seng Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (11), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Feb. 3, 1959 M. FOX 2,871,916
ROCKER SPRING FOR PLATFORM ROCKER Filed July 24, 1957 2 Sheets- Sheet 1 7 M. FOX
ROCKER SPRING FOR PLATFORM ROCKER Feb. 3, 1959 2 Sheets-Sheet 2 Filed July 24, 1957 MN w\ DEE Q\ v Q M V If United .fltates Patent 2,871,916 ROCKER SPRING FOR PLATFORM ROCKER Martin Fox, Chicago, Ill., assignor to The Sang (Zompany, a corporation of Illinois Application July 24, 1957, Serial No. 673,911 1 01mm. of. 155-71 This invention relates to an improved rocker spring for platform rocking chair constructions.
The principal object of the present invention is to provide a rocker spring assembly for a platform rocking chair which reduces the overall height of a platform rocking chair.
A further object of the invention is to provide a rocker spring which is very strong, and which may be very easily secured to the base member and rocker member of a platform rocking chair.
Yet another object of the invention is to provide a rocker spring assembly having a bottom plate which lies fiat upon the platform base, and has a downturned strengthening skirt around substantially its entire margin.
The invention is illustrated in a preferred embodiment in the accompanying drawings in which:
Fig. l is a fragmentary sectional view of a rotating platform rocking chair equipped with the rocker spring assembly of the present invention;
Fig. 2 is a fragmentary section on an enlarged scale taken substantially as illustrated along the line 2-2 of Fig. l;
Fig. 3 is a plan view of the rocker spring;
Fig. 4 is a section taken substantially as indicated along the line 44 of Fig. 2;
Fig. 5 is a section taken substantially as indicated along the line 55 of Fig. 4;
Fig. 6 is a fragmentary section taken substantially as indicated along the line 6-6 of Fig. 5.
Referring to the drawings in greater detail, and referring'first to Fig. l, a rotary platform rocker is provided with a plurality of legs 10 surmounted by a turn' table mechanism 11 on top of which is a rocking chair base frame 12 which is provided along its side margins with rocker rails 13.
Supported on rocker rails 13 are rocker members 14 which are flanked by side frame members 15 of the rocking chair structure. interconnecting the base frame 12 and rocker members 14 are rocker spring assemblies 16 which embody the herein disclosed invention.
As best seen in Figs. 2 to 6, the rocker spring assemblies 16 have bottom plates 17 which are long, parallel sided members with rounded end portions and downturned supporting and strengthening skirts 18 each of which extends around the entire perimeter of the base member 17 and is provided in its forward margin with spring receiving slots 19. Thus, the skirt 18 defines an open bottom chamber 17a beneath the plate 17. To the rear of the spring receiving slots 19 are two pairs of radially extended downwardly'struck bosses 20 which extend into the chamber 17a, and between each pair is a downwardly struck spring retaining hook 21, so that the lowermost convolutions of a pair of coil springs 22 may extend through the slots 19 and into chamber 17a where they are engaged by the lugs 20 and hooks 21 which act as spring retaining means. At the two ends 2,871,916 Patented Feb. 3, 1959 of the bottom plate 17 are apertures 23 (see Fig. 5) to receive fastening bolts 24 which extend upwardly through the rocker base 12 and are secured by nuts 25. Adjacent each aperture 23 is an upturned ear 26 which abuts a side of a nut to prevent the nut from turning when the bolt 24 is being screwed in or out.
Mounted on top of the springs 22 is a top plate in-' dicated generally at 27, which includes a plate body '28 substantially parallel to the bottom plate 17, an upstanding flange 29 at the front of plate 28, and an upstanding attaching flange 30 at the rear of plate 28 which is provided with suitable openings to receive wood screws 31 by means of which the upper spring plate is secured to the face 14a of rocker member 14. The top plate 27 is strengthened not only by the upturned flange and the attaching flange 30, but also by downturned end portions 32 and upwardly struck strengthening bosses 33 and 34 which extend from the attaching flange 30 forwardly to flank the rear portions of the springs 22.
Slots 35 in the front flange 29 receive the upper convolutions of the springs 22, and upwardly struck bosses 36 cooperate with upwardly struck hooks 37 to retain the springs in engagement with the top plate 27.
Reference to Fig. 1 shows that the present construction with its flat bottom plate to receive bolts which extend upwardly through the rocker spring base permits the use of a considerably lower rocker supporting rail 13 than is possible with a conventional rocker spring in which the bottom plate has a downturned attaching flange like the flange 30 of the top plate. The assembly is also stronger and easier to mount, since the attaching bolts and nuts are alongside the springs instead of being beneath them as was necessarily true when the bottom plate had a downturned attaching flange which was the counterpart of the upturned flange 30.
Furthermore, the use of upturned cars 26 simplifies the fastening of the bottom plates to the rocker base frame.
The foregoing detailed description is given for clearness of understanding only. and no unnecessary limitations are to be understood therefrom, as some modifications will be obvious to those skilled in the art.
A rocker spring assembly for platform rocking chairs comprising: a bottom plate havinga downturned skirt extending substantially around its perimeter, said skirt defining an open bottom chamber, there being spring receiving slot means in a margin of said skirt and apertures adjacent opposite ends of the plate to receive attaching means for securing the bottom plate to a rocker base; a pair of coil compression springs mounted in upright position on said bottom plate with their bottom convolutions beneath the plate and extending through said slot means so they are partly in the chamber and partly outside it, said springs being between said apertures; integral means on the bottom plate to secure said springs thereto; a top plate with an upturned skirt having slot means in which the top convolutions of said springs are seated, a portion of said top plate being provided with apertures to receive fastening means for securing it to a rocker member; and integral means on the top plate to secure it to said springs.
References Cited in the file of this patent UNITED STATES PATENTS 1,272,919 Crawford July 16, 1918 2,222,578 Walenta 'Nov. 19, 1940 2,589,562 May Mar. 18, 1952 2,772,723 Tunnell Dec. 4, 1956
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1272919 *||Mar 27, 1918||Jul 16, 1918||James Crawford||Nut or rivet holder for sheet metal.|
|US2222578 *||Aug 17, 1939||Nov 19, 1940||Paul Walenta||Rocking chair|
|US2589562 *||Dec 9, 1949||Mar 18, 1952||May Anthony A||Spring construction for cradles|
|US2772723 *||Feb 8, 1954||Dec 4, 1956||Hickory Springs Mfg Company In||Spring unit for platform rocking chair|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3053570 *||Jan 5, 1961||Sep 11, 1962||Seng Co||Rocker fixture|
|US3966251 *||Jul 15, 1974||Jun 29, 1976||Dual Manufacturing And Engineering Incorporated||Rocker spring unit|
|US5171000 *||Mar 8, 1991||Dec 15, 1992||La-Z-Boy Chair Company||Adjustable rocker spring apparatus|
|US5221071 *||Nov 15, 1991||Jun 22, 1993||Milsco Manufacturing Company||Vehicle seat suspension with improved compression spring mounting|
|US5370442 *||May 27, 1993||Dec 6, 1994||La-Z-Boy Chair Co.||Rocker block|
|US5435622 *||May 5, 1994||Jul 25, 1995||La-Z-Boy Chair Company||Swivel recliner/rocker chair having preloaded base assembly|
|US6918632 *||Feb 18, 2004||Jul 19, 2005||Ashley Furniture Industries, Inc.||Rocker mechanism for rocker recliner|
|US7628452||Feb 29, 2008||Dec 8, 2009||Shanghai Industries Group, Ltd.||Rocker base|
|US9586453 *||Apr 28, 2014||Mar 7, 2017||Newfrey Llc||Spring retainer clip|
|US20090218862 *||Feb 29, 2008||Sep 3, 2009||Guoliang Du||Rocker base|
|US20140230222 *||Apr 28, 2014||Aug 21, 2014||Newfrey Llc||Spring retainer clip|
|U.S. Classification||297/267.1, 5/105|
|International Classification||A47C3/027, A47C3/02|