US1717949A - Spring seat - Google Patents

Description

- June 18, 1929.' M. STUBNlTZ SPRING SEAT Filed June 14, 1927 Patented June 18, 1929.

UNITED STATES 1,717,949 PATENT o Fica.

MAURICE STUIBNITZ, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO FORT PITT BED- DING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

SPRING- SEA T.

Application filed .Tune 14, 1927. Serial No. 198,717.

This invention relates to spring seats such, for example, as those employed on motor cars, trucks and the like.

Seats of this type generally include a frame provided with a number of helical, conically shaped springs over which a padded cover is secured. Ordinarily, a sheet of material such, for example, as wire mesh is provided across the top of the spring assembly to provide a support for the covering material which is laid thereon. Where this is not done the covering material falls into the relatively large spaces at the top of each spring and the seat rapidly breaks down and becomes mis-shapen and worn out. On the other hand, the wire mesh is expensive and adds materially to the cost of the finished sheet.

An object of this invention is to provide a seat of the type described constructed and arranged to eliminate the necessity of the wire mesh hitherto employed, without in any way affecting the wearing qualities or ruggedness of the finished seat.

A further object is to provide a spring seat of the type set forth having an improved cover supporting surface.

A still further object is to provide a spring seat of simple arrangement, which will be rugged and durable in construction and cheap to manufacture and assemble.

These and other objects which will be apparent to those skilled in this particular art are accomplished by means of the invention illustrated in the accompanying drawings in which Figure 1 is a top plan view of a spring assembly from which the cover has been removed, constructed in accordance with one embodiment of this invention. Fig. 2 is a side elevation thereof, partially broken away. Fig. 3 is a top plan view similar to Fig. 1 of a somewhat modified arrangement. Fig. 1 is a sectional view of one end of a strap member forming a part of the present invention and Fig. 5 is a similar View of a different form of strap member.

The particular embodiments of this invention which have been chosen for the purposes of illustration are shown in connection with a. spring seat of ordinary construction consisting of a lower frame 10 provided with transversely extending spring supporting cross strips 11 on which the vertically extending, helical, conically shaped springs 12 are mounted. In the illustrated forms, an

system of tie wires 15 is employed for holding the various members in assembled relation.

The present invention contemplates the elimination of the wire mesh, hereinabove re ferred to as employed or covering the open ends of the spring members 12 to prevent the covering material pulling or being forced into the openings at the tops thereof. As illustrated, this includes the provision of strap members 16 which are connected to the upper ends of said spring members and arranged so as to extend across the tops of adjacent or intervening springs. These strap members may or may not form a part of the tie system of wires 15. As illustrated in Fig. 1 the cover supporting straps 16 are so arranged that the corner springs are left uncovered but the principal'load supporting springs of the seat in the center thereof are so'covered as to prevent the covering material falling into the open ends thereof and the corners of the seat not being subjected to much load of wear, the cover is effectively supported in place.

In Fig. 3 the strap members 16 are con nected at one end to the top of a spring member and are extended across the top of the adjacent members to the edge of the seat and are then clamped about the upper frame 13. In this manner the corner springs as well as the center springs of the seat are covered and a particularly strong construction is thus provided.

The ends of the strap members 16 are so formed as to lock the spring or frame wire therein when clipped over such members. In the arrangementillustrated in Fig. 4, the end of the strap member 16 is bent downwardly so as to form a wire engaging hook 17 A looking or retaining lug 18 is formed by curv ing the bent end of the hook member 17 upwardly as illustrated. The resiliency of the metal is such that a spring or frame wire can be inserted in the hook 17 by forcing it through the narrow opening formed between the main body portion of the strap member 7 and the curved lug 18. It is then held against unintentional removal from the strap memher when once in place by the locking lug or projection 18. In the arrangement shown in Fig. 5 the strap member 16 is provided with a lug or ear 19 projecting downwardly toward the hook 17 so as to form a wire engaging surface or shoulder for preventing accidental removal of the strap therefrom. It can be formed by being struck from the metal of the strap body, as shown.

It will be apparent that the present invention provides a seat in which the cover supporting wire mesh or its equivalent is entirely eliminated, and the tie system of Wires 15 is employed in forming a part ofthe cover supporting surface. The strap members 16 cooperate with the tie wires in supporting the cover at all points so that the seat cannot break down under the most severe use.

What I claim as new and desire to secure by Letters Patent is:

A spring seat embodying a plurality of vertically-arranged coiled springs spaced apart and having a surrounding marginal frame connected to the outside springs of the group and tie-wires connecting the top coils of the springs together and lying in a substantially horizontal plane in alinement With said top coils and extending over the openings between the springs, and a plurality of straps independent of each other and said tie-wires and each having means for securing it in continuous alinement with a row of springs and centrally across the upper open ends of some of said springs in the row and free from attachment thereto and in horizontal alinement with the tie-wires, whereby the straps combine with the tie-wires to form a flat sup port for a seat cover and prevent the same from sagging into the wide open spaces of the top coils and between the separate springs.

In testimony whereof, I have hereunto subscribed my name this 4th day of June, 1927.

MAURICE STUBNITZ.

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