US1714227A - Bedspring structure - Google Patents

Description

Patented May 21, 1929.

UNITED STATES WILLARD 0RD LATHROP, 0F CINCINNATI, OHIO BEDSPBING STRUCTURE.

Application filedvAugust 8, 1927. Serial No. 211,445.

This invention relates to bed-spring structures in which upright conical or helical Wire springs are used between supporting-frames and each of such springs is closely-wound and in contracted horizontal diameter at its middle portion (mid-height, so to speak) so that a telescoping or socketing cross-intersection of tie-devices can be employed within said respective closely-wound and contracted middle portions and thereby simply, economically and effectively preserve or maintain the constant perpendicular alignment of said springs and amply prevent their sagging or lateral displacement, shifting, or distortion, while not otherwise materially affecting their desired and intended resiliency for continued or extended comfortable compression-use. The specific and referred form of interlocking. and stabilizing device herein will be fully described in connection with the accompanying sheet of drawings, in which Figure l is a plan view of a miniature assembly of bed or seat springs, showing the usual border-frames for their properlyrelated support and with the intersecting lock-tie vdevices embodying my improvement herein in working position; ig. 2, an end elevation of Fig. 1, bringing more clearly to view my improved tie-feature; Fig. 3, a side elevation of Fig. 1, but at right-angles to Fig. 2; Fig. 4, a fragmentary elevation of the central closely-Wound and contracted portion ofan adjoining pair of spiral springs to which my invention is especially adapted,

and showing one end of the unbent or straight of the said arched or humped and U-crimped tional elevation of one attaching-end of the said unbent or straight cross-tie wire and showing, insection, its engaging intersectingrelation with the said arched-portion of the longitudinal wire but omitting the springs;

F i g. 8, an elevation of one of the longitudinal special form'of arched and U-cr1mped wires used n my improved binding intersections for bed-springs; Fig. 9, a longitudinal elevation of the straight cross-tie wireused in my. special form of binding-intersections; and Fig. 10, a full-size fragmentary sectional elevation, taken on the dotted- line 10, 10, of Fig. 4, of the improved assembled cross-tie or composite intersection herein, showing the 7 said eloselyqvound and contracted central portion of the spring in section, the arched and U-crimped unit of one of thelongitudinal tie-wires in engagement with said closely wound and contracted. central portion of the spring and a cross-section of one of the said unbent or straightv oross-tie Wires in inter: locking engagement with the said arched portionofits ooacting longitudinal bindingwire.

A indicates each one of the vperpendicular spiral springs used in a bed or othersimilarcushioned structure that I have shown, for immediate example and convenience, on a small scale in Figs. 1, 2 and 3, in assembled form on a pair of angle-irons a, a, that are i connected by means of a longitudinal series of transverse bars or rods B on which the rows of spirals are mounted, the latter as best seen in Fig. 2.-

I The springs shown are conical from their broad upper ends or top coils down to their closely-wound cylindrical middle portions or centersC and thence arecyl-indrical orof the same uniform horizontal diameter as portions C down to their lower ends or bases 6 that are ordinarily hooked to the said transverse bars B. The said middle portions C of the springs comprise a plurality of closely- -wou nd and contracted, strengtheenhancing form of very simple, economical and effective 1 interlockingdntersections of tie and binding wires that I will now proceed to briefly and specifically describe.

In Fig. 8, I best show the peculiar or preferred form of longitudinal wires 11, and, in Fig. 9, I best show the peculiar or preferred form of cross or transverse tie-wires 12 used in said several interlocking-intersections of the spring-structure herein. The said longitudinal Wires 11 have a series of straight or unbent portions 13 that are alternated by upwardly-arched or hump portions 14, the latter being flanked by depressed crimps or socket- members 15, 15, of Ushape. The said straight portions 13 lie between the central contracted coils C, and the said crimps 15, 15 form sockets or seats for the latter, with the said arched or hump portions 14 extending upwardly and snugly encased within the said central contracted coils C, as best seen in Figs. and 10. The said arch-mcmbers 14: have their higl'i-point 1 1 extending approxin'iately the thickness of the spring wire above the level of the top coil of said contracted middle section C of the respective springs for the reception of the straight cross-tie wires 12 that lie transversely in the bed-structure and readily pass through the lower coils of the conical upper sections of the springs for due hookingengagement at their opposite ends 1%, 12, with the said lower coils of the conical upper sections of the border springs that lie along the opposite sides of. the bed, the latter feature being as best seen in Figs. 1 and 2. In assembling the intersecting wires, the 1011'- gitudinal arched and crimped wires 11 are each inserted from the side of the row or series of contracted spring-centers C, after lining the arched-portions up with each of the latter the length of the bed and then inserting the arches or humps into place in each chamber or casing formed by said central contracted coils C with the latter resting in the respective side-crimps 15 and then the transverse straight wires 12, with unbent ends, are easily inserted through the open lower coils of the conical upper sections of the row of springs until they pass entirely across all the springs in that row, so that their opposite ends 12 can then be bent upwardly into hookform. as best seen in Figs. 2, 4 and 7, and thus completing the interlocking of the spirals at their central closely-wound and strong contracted portions, proof against any lateral or torsional displacement or any sagging of the spirals from their true perpendicular standing-support on the lower cross-bars B.

It will be well observed, in Fig. 7, how very simple the intersections of tie-wires here in are for eflecting the ready united interlooking or coupling of the cluster of perpendicular cushioning-springs in a bed-structure that cannot sag or sway sidewise, but must always rise and fall in a perfectly perpendicular path on the compression of the spring-units by a weight of any kind on the bed. The spring-structure, as a whole, can be very easily taken apart at any point therein, in the event one or more of the springunits needs replacing or repair, by simply opening one off the hooked ends 12 of that one of the straight cross-tie wires 12 in which the repairs are to be made and then drawing that wire lengthwise until the faulty spring or wire "is reached tor substitution by a, good one or other repairs thereto. After such substitution or repairs the said with drawn straight wire 12 is pushed or drawn back into its original coupling-position for again hooking its said opened end 12 into fastened-place on the contracted middle-portion 0 of itsproper border-springnext adjacentthe side-bar of the bed-frame.

Ordinary X-crossed intersecting auxiliary coils 16 are used between the rows of spirals A for hoolnconnection with the topmostcoils of the latter and duly aligning the upper level of the bed-spring structure in unit form, as customary.

I claim A bed-spring structure comprising, in con'il'iination, a plurality of perpendicular spirals each of which has a contracted closely-wound intermediate section of a plurality of four or more coils, supports for said spirals in transverse rows along the structure, a border-frame surmounting the structure, longitudinal wires having straight portions therein that alternate archedor humped portions'with deep straight sides, the said deep straight sides of the humped portions forming with companion deep straight sides deep ly depressed U-shape seating wells or sockets for the reception of said closely-wound fouror-more coiled intermediate sections, and straight or unbent cross-tie wires transversely arranged along the rows of spirals and adapted for engagement with the top surface of each. oil the uppermost coils of the intermediate sections and beneath the highpoint of thc'respective hump portions of the said longitudinal wires for interlocking-engagement in an unshiftable manner therewith and likewise with the said contracted intermediate sections, substantially as shown and described. 1 V y In testimony whereof I hereunto afiix my signature.

YVILLARD OED T ATHROP.

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