US1899836A - Spring bed bottom - Google Patents

Description

Feb. 28, 1933. M, THUM SPRING BED BOTTOM Filed Feb. 28, 1950 INVENTOR a1; ATTORNEY Patented Feb. 28, 1933 UNITED STATES MARTIN THUMI, OF ROCHESTER, NEW YORK srame BED BOTTOM Application filed February 28 1930. Serial ITO-432,191.

'- The present invention relates to spring bed bottoms and more particularly to the type in which a webbing is supported resiliently by a frame. An object of this invention is to 5 provide a novel means for preventing the sagging of the webbing through use. Another object of the invention is to providea trussed means for the webbing situated at such a point or points thereon that sagging is prevented.

To these and other ends, the invention consists of certain parts and combinations of parts all of which will be hereinafter described: the novel features being pointed out 15 inthe appended claims. I

In the drawing: a r Fig. 1 is a plan view of a bed bottom constructed in accordance with this invention; Fig. 2 is a side view of the bed bottom; L Fig. 3 is an enlarged fragmentary transverse vertical section on the line 33, Fig. 1; and

Fig. 4 is an" enlarged fragmentary plan view. Q a

In the illustrated embodiment theframe embodies two side rails 1 having castings 2 projected upwardly from the ends thereof.

and connected by cross heads 3 to which-the 0 webbing is connected at opposite ends. Each of the cross heads 3 consists of two angle members reversely arranged, with two flanges overlapping and the other two flanges proj ecting in the same direction, and forming in effect a cross head of channel formation. a

The webbing, in this instance, embodies a plurality of ribbons or straps 4 extending longitudinally of the frame and connected by coil springs 5 to the upper flanges of the cross heads 3., These straps or ribbons 4 are inturn connected by springs 6. with proximate straps 4. At each side of the webbing is arranged a sag preventing device which in this instance comprises an upper s1de strap or r1bbon7 0 relative longitudinal movement by truss devices in the form of upright orvertically extending spacing tubes 9 through which bolts or rivets 10 pass afterward being upset on the outer faces of the two straps; The ends of both'strap's 7 and Sam connected by- 0011 springs 11 with respectively the upper and lower flanges of the cross heads 3 while the sides of; the upper straps 7 are connected by coil springs 12 with the sides of the adacentstraps 4 of the Webbing. I The two sag preventing devices are also connected together by transversely ex tending straps 13 interwoven between the straps 4 and having coil springs 14'at their ends connected to the straps 7 of the side sag preventing devices.

These transversely extending straps 13 may also be rigidly secured to some of the straps 4 which are also trussed to prevent sagging of the webbing away from the sides.

To this end rivets or bolts 15 secureth'e straps 13 to two of the'straps 4, and'b'eneath these straps 4 are arranged wider straps 16 which are held by the rivets or bolts 15 after the latter pass through the truss tubes '17 arranged between the saidstraps 4 and 16-. T hestraps 16 are connected at their'ends to the cross heads 3 by springs 17a'a'nd serve with the straps4 directly above them to provide sag preventing devices away fromthe sides. These sag preventing devices are in turn through the transversely extending straps 13 connected with the side sag preventing devices. a w This invention provides a novel sag preventing means for soring bed bottoms. The sag preventing devices are flexible in a vertia cal direction but are not flexible in ahorizontaldirection. They quickly return the bedbottom to its normal condition as soon as relieved of weight and. do not become sagged afteruse. Each sag preventing device has two ribbons arranged in'spaced relation, and held in such relation by truss devices arranged in spaced relation along the length of the ribbons or. straps; The two straps are each connected yatreach end tolone of the cross heads. Sag preventing devices may not only be arranged ohopposite sides 1 son on the bed bottomis such that the webweb members.

of the straps of the webbing,

bing members 4 extend horizontally as well as longitudinally: that the straps 7 and 8 are vertically spaced and extend horizontally as well as longitudinally. to-wit, the upper side strap 7 and the lower side strap 8 of the sag preventing devices that are located at opposite sides of the bed bottom; that the webbing members 4: are at the level of the upper side straps 7 of the sag preventing devices and thatthe webbing members 4 are in effect locally supported at several places throughout; their length by longitudinally spaced transversely extending, members that are connected to, which extend between and which are supported by the sag, preventing devices and more particularly to, between and by the upper straps of said sag prevent- 7 ing devices. As shown in the drawing the sag preventing means or devices are transversely arranged at opposite sides of the longitudinally extending webbing members 4 or as otherwise expressed atv opposite sides of a, or at opposite sides of groups or sets of the longitudinally extending Webbing. member or members 4' whereby said webbing membeps' 4 are in fact located intermediate or between sag preventing devices' It is therefore proper in respect to the horizontally and longitudinally extending webbing members 4 to refer to the, same as intermediate webbing members. Therefore herein the longitudinally extending web members 4 which are between the sag preventing means are some times referred to as intermediate webbing members and sometimes as the longitudinally and horizontally extending intermediate 1 What I claim as my invention and desire to secure by Letters Patent is '1. In a spring bed bottom, the combination with a frame and a webbing resiliently connected to the frame and embodying .a plurality of longitudinally extending straps, a vertically fiexibleqstrap arranged under one and having a trussed connection with the under side of said webbing strap, a spring connecting said under strap at its endsto the frame, a transverse strapsecuredto the strap to which the under strap is secured, extending in opposite directions therefrom and interwoven with the other longitudinally extending straps of the webbing, two sag preventing devicesarranged alongopposite free sides of the web- 7 hing, springs connecting the ends of the transverse strap to the two side sag preventingdevicemand springs connecting the side sag preventing devices with the adjacent longitudinal straps of the webbing.

- 2. In a spring bed bottom the combination with a frame of longitudinally andhorizontally extending intermediate webb-ings each resiliently'connected at opposite ends to the frame, sag preventing devices between which said intermediate webb-ings are located, each of said sagpreventing devices comprisingtwo longitudinally and horizontally extending flexible straps located one above the other and rigidly secured togetherthrougl1 the medium of longitudinal- 3. In a spring bed bottom, the combination with a frame,'a sag preventing device at each side of the bed bottom, longitudinallyw and horizontally extending webbings having the ends thereof connected to the frame and which webbings are located between said sag preventing devices, each sag preventing device comprising upper and lower longitudi nally extending straps, longitudinally spaced truss devices between the respective straps for rigidly securing the straps to each other in vertical spacedrelationship one over the other, the webbings at their side edges being connected by transversely extending members to the upper straps so as to'receive support therefrom and being depressible adj a-cent-the inner sides of the straps underthe weight of a person sitting on the edge of a bed, and a resilient connection whereby each end of each longitudinally extending strap of the sag preventing device is secured to therespective ends of the frame. N

a. A springbed bottom comprising a frame, a longitudinally extending webbing connected to opposite ends of the frame, pairs of longitudlnally extending metal straps,

there being a pair for each side of the web tudinally spaced vertically extending spacing tubes and-bolts or rivets that pass through the spacing tubes and which bolts or rivets in conjunction-{with their associated spacing tubes rigidly connect the straps of each pair I at longitudinally spaced intervals, the webb ing being connected at longitudinally iso ' straps which are vertically spaced from each spaced intervals to the upper straps of the respective pairs, and transverse straps yield 5. A spring bed bottom comprising a frame, longitudinally extending webbing connected to opposite ends of the frame, a pair of metal side straps for each of the opposite sides of the bed bottom, the straps of each pair being provided by upper and lower other throughout their length and yieldably connected to opposite ends of the frame, vertical spacing and connecting means bracingly connecting straps of each pair at longitudinally spaced intervals, the webbing being con- 7 nected at longitudinally spaced intervals to the upper straps of therespective pairs, lower longitudinal intermediate straps each vertically spaced from a longitudinal webbing member above it and yieldably connected at their ends to the frame, transverse straps yieldably connected at their ends to the upper side straps and interwoven with the longitudinally extending webbing, and vertical spacing and connecting means bracingly connecting the intermediate longitudinal straps with the longitudinally extending webbing above them and with the transverse straps at the points where the transverse straps cross said longitudinally extending webbing that are above the lower longitudinally extending intermediate straps.

6. A spring bed bottom comprising a frame having channel cross heads formed of reversely disposed angle members, horizontally and longitudinally extending webbings connected to the upper flanges of the cross heads, a pair of upper and lower vertically spaced side straps at each side of the spring bed bottom which upper and lower side straps are bracingly connected at longitudinally spaced intervals, springs connectln the respective upper and lower straps to t e upper and lower flanges of the cross heads, the webbings being connected at longitudinally spaced intervals to the upper side straps,

longitudinal intermediate lower straps vertically spaced from and below webbings corresponding thereto and yieldably connected to the lower flanges of the cross heads, transverse straps yieldably connected to the upper side straps and interwoven with the webbings and means bracingly connecting therlongitudinal intermediate lower straps with the webbings and transverse straps at points where the Webbing and transverse straps cross.

MARTIN THUM.

Images