US1923739A - Heavy duty seat construction - Google Patents

Description

Aug. 22, A. w MOSKE HEAVY DUTY SEAT CONSTRUCTION Filed Nov. 16, 1931 2 Sheets-Sheet l INVENTOR fl/exavaer WMoske BY WPM ATTORNEYS Aug. 22, 1933. w MOSKE HEAVY DUTY SEAT CONSTRUCTION Filed Nov. 16, 1951 2 Sheets-Sheet 2 fl/ex cwc/cr WMJSke.

ATTORNEYS Patented Aug. 22, 1933 UNITED STATES HEAVY DUTY SEAT CONSTRUCTION 7 Alexander V. Moske, JacksonrMichg assignor to Reynolds Spring' Company, Corporation of Michigan Jackson, Mich a Application November 16, 1931 Serial No. 575,246

3 Claims. (01. 155-480) The present invention pertains to a novel spring construction for heavy duty as in trucks and busses. f

Spring cushion seats are usually provided with diagonal stay wires having their lower ends secured to the base frame and their upper ends to the border frame. It has been found, however, that the lower ends cannot be attached to the base frame with sufficient rigidity to withstand heavy duty. The object of the invention, therefore, is to provide a satisfactory anchorage for the lower ends of the stay wires and is accomplished essentially by the use of so-called furniture strips extending across the bottom frame and having the lower ends of the stay wires secured thereto rather than to the bottom frame.

The use of furniture strips overcomes the above mentioned objection in that they are comparatively strong and rigid and provide ample means for the attachment of the stay wires thereto, whereas the base frame has certain limitations due to the fact that it is shaped primarily for other purposes.

The invention also involves the securing of the furniture strips to the base frame, and this function is accomplished by securing a heavy wire in a channel formation formed in the base frame and attaching the ends of the strips to this wire. Preferably, the wire is pinched in the channel formation and allowed to protrude therefrom at intervals. The ends of the furniture strips are preferably curled around the protruding parts of the wire in order that they may have a free swinging movement thereon in the expansion and compression of the cushion seat in service.

The invention is fully disclosed by way of example in the following description and in the accompanying drawings, in which Figure 1 is a top plan View of a seat spring, partly broken away to showthe bottom structure;

Fig. 2 is a detail sectional perspective view showing the bottom structure;

Fig. 3 is a similar view of a modified construction; and

Fig. 4 is a side elevation partly in section of the seat spring.

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

The bottom of the structure is defined by a sheet metal frame member 1 formed around a tacking strip 2 and further formed with a channel formation 3 facing inwardly of the. frame for a purpose which will presently be described.

The bottom structure is completed by means of so-called furniture strips 4 of sheet metal extending in parallel relation between oppositesidesof the frame 1 and having their ends .c'oiledat 5 aroundwires 6 disposed in the channels 3. the wires are engaged by the ends of the strips, they are projected outwardly'of the channels as at '7 in order to permit the free swinging movement of the strips around them, but otherwise are confined within the channels as clearly illustrated in Figure 2. At both ends of the bends 7 however, the sides of the channel are pinched together at '8 tohold the Wire 6 against withdrawal from the links 11 to determine the top plane and also to distribute the load among the several springs.

Such a spring unit, especially when used in the seat of a motor vehicle, is provided with diagonal stay Wires which ordinarily extend from one side of the upper or border frame to the opposite side of the lower or base frame. It has been found, however, that this mode of attachment is notsecure enough, especially at the lower end, to withstand heavy duty as in trucks and busses.

Acccordingly, the furniture strips which provide a rigid base structure for heavy duty are also utilized for the anchorage of the lower ends of the stay wires. Adjacent stay wires are formed with opposed lips or ears 14 near one end, and a tie wire 15 is secured across the space between the adjacent strips 4 by having the ends received in the ears 14 and bent downwardly as indicated by the numeral 16 in Figures 1 and 4. The stay wire 1'7 has its lower end 18 bent at a right angle and laid adjacent the mid point of the tie 15 to which it is secured by a sleeve or clip 19. For securing the upper end of the stay wire to the border frame, the clips 13 at opposite sides of this end are formed integral with an intermediate piece 20 in which the upper end of the wire 17 is 5 received and secured, for example, by bending the upper end of the Wire as at 21 and clamping it within the member 20.

In Figure 1, the tacking strip 2 is surrounded by the frame member 1 except for a portion 22 1 1') Where 6 of its lower face, to which the usual curtain or apron 23 is secured by tacks 24. In other constructions it is desired to tack the apron to the side of the strip rather than to the bottom, and accordingly, Figure 3 shows a base construction wherein the tacking strip 2 is uncovered by the 'base member at its outer side 25 to which the apron 26 is secured by tacks 27.

Inasmuch as the invention relates to heavy duty cushion springs wherein an unusually secure fastening of the stay wires is required, this object is realized by the provision of furniture strips which hold the lower ends of thewiresmore firmly than they are ordinarily held by the base frame. Moreover, the furniture strips, having greater rigidity and strength, reinforce the bottom structure.

Although specific embodiments of the invention have been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope of the invention, as indicated by the appended claims.

What I claim is:-

their lower ends attached to said strips.

3. In a heavy duty seat construction, upper and lower frames, an inwardly facing channel formed on said lower frame, a wire secured in said channel, furniture strips extending across the lower frame and having their ends hingedly attached to said wire, said wire protruding from said channel where engaged by said strips, and coil springs having their lower ends attached to said strips.

' ALEXANDER W. MOSKE.

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