US2371099A

US2371099A - Bedspring

Info

Publication number: US2371099A
Authority: US
Publication date: 1945-03-06
Anticipated expiration: 1962-03-06

Description

March 6, 1945. N. c. GoLDBERG 2,371,099

BED SPRING r Filed Dec. 2, 1942 2 Sheets-Sheet 1 ifrroR/VEY March 65 19,45. N. c. GOLDBER'G 2,371,099

BED SPRING Filed Dec. 2, 1942 2 Sheets-Sheet 2 wie Patented Mar. 6, '1945 UNITED STATES PATENT OFFIC BEDSPRING Nathan C. Goldberg, New York, N. Y. l Application December 2, 1942, Serial No. 467,635

(o1. 519o y 6 Claims.

The present invention Yrelates to bed springs. More specifically, it relates vto bed springs of the Wire fabric type, wherein a mesh type wire fabric is supported in a bed spring frame by a plurality of coiled springs located at each end of the frame and secured at the opposite ends of th wire fabric.

One of the principal objects of the invention resides in the provision `of a mesh fabric consisting of a multiplicity of generally longitudinal, flexible wire cables having clips'to secure adjacent cables to each other in order te form the mesh fabric, together with means for protecting the ends of the cables so that they will not be exposed and cannot assume any position where they might catch or tear the mattress or linens placed on the bed.

A further. object of the invention resides in the provision of a mesh fabric supported by a series Y of end springs as described above, together with a strain distributing member in the form of a transverse i Wire extending between all of the springs at one end of the bed, so that a strain exerted on one of the cables of the mesh fabric will not be entirely supported by the single spring to which that cable is attached, but will be distributed in` progressively decreasing amounts to the adjoining springs on either side.

A further object of the invention resides in the provision of a strain distributing wire as above, together with a novel arrangement for shielding the ends of said wire Within the convolutions of one of the coil springs, so that it cannot catch or tear the mattress or linens of the bed.

Another important object of the invention re#- sides in the provision of a strain distributing wire extending between the individual coil springs at one end of the bed and formed t0 include a notch adjacent each spring in order to facilitate locating the spring and the cable ends of the wire fabber.

Other objects will appear hereafter.

Referring now more particularly to the drawings attached to and forming a part of the present specication:

Fig. 1 is a fragmental plan View of a bed spring constructed in accordance with the teachings of the present invention. y

Fig. 2 is an enlarged detail plan `view of one end of one of the'transverse supporting bands illustrated in Figure 1.

Fig. 3 is a. detail sectional View taken substantially on the plane of the line 3 3 of Figure 2.

Fig. 4 is a detail fragmental plan view of a portion of the bed spring shown in Figure 1, the coil springs illustrated therein being shown in section.

Fig. 5 is'a fragmental plan View similar to Figure 4 and illustrating a modified embodiment of the strain distributing wire.

The form of bed spring illustrated in the drawings includes, in general, a pair of side frame members connected at two points intermediate the end frame members I2 by cross braces I3. The frame members Il, I2 and I3 serve to support metal fabric generally indicated by the reference number I4. l

`To this end the frame members I2 are each provided with a relatively thin yspring anchor plate I5 secured to the frame I2 in any suitable manner, as for example, by wood screws I6 extending through the plates' I5 and into the wooden frame members I2. The spring anchor plates I5 include a plurality of punched openings in which the anchor loops I'I of the individual coil springs I8 are secured. These springs in turn y support the cables forming the mesh fabric I4.

. ric with respect to the strain distributing mem- The free ends of each of the springs terminates in a loop I9 and the entire group of springs at one end of the bed are operatively united by a strain distributing wire 2l extending from one side of the spring assembly to the other and through the loop I9 of each spring. The opposite ends of the "strain distributing wire 2l are bent at a right angle to provide short leg portions 22. These leg yportions 22 are telescoped within the convolutions of the end spring I8, so that no sharp edges of metal are left exposed and any danger of catching and tearing the mattress or bed linens placed on the spring assembly is eliminated.

The `fabric I4 of the spring includes a number of longitudinal coiled wire cables, and, in the form of invention illustrated in the drawings, the

number of longitudinal wires is exactly double the number of coil springs I8 at each end of the bed. The cables are brought together at each of the springs I8. These cablesvare joined by twisting into a pigtail 26 vthat is inserted within the convolutions of the spring, so that the sharp, loose ends of wire'will not be exposed and so that the mattress and bed linens cannot be snagged or torn.

From an'examination of Figure 4, it will be seen that one of the cables 25 of each pair is positioned above the strain distributing wire 2l, and the other cable is positioned below this wire, so that each pair'of cables forms a loop encircling and directly engaging the strain distributing wire 2|. Similarly, the loop I9 of each individual spring is passed around the strain distributing wire 2l and through the loop between the cables, so that the spring, cables, and straindistributing wire are interconnected with each other and will act as a unit. In practice, this means that any load imposed on any one of the cables will principally be supported by the spring to which that cable is attached, but the strain distributing wire 2| will transmita. .portion of. the load to the adjoining springs on each side. The inherent flexibility of the wire 2| will result in a reduction of the strain on the more remote springs of the group, so that the closest springs `bear the greatest part oi the strain and the more remote springs receive a reduced share of the load. It will also be observed that in the event any ofthe springs I3 should become broken, noneof the cables 2:51 will be released, since the cables will .still be secured to the Wire 2| and any load imposed upon the cables will :be distributed to the adjacent springs on either side of. the-.broken spring.

It is contemplated that the strain distributing wire may be` any oneof. several cross sections, but it is believed. that the most satisfactory results will be obtained by the .use-of anound.wire.-since a. wire of round .cross sectionis equallyilexible in all directions and will not besubjectto any-tendency to twist or buckle in .response to forces acting on it.

In the modiiied form of the invention illustrated in Figure 5, the strain. distributing wire 3| includes leg portions 32 arranged -to yentendinto the springs I8 in the same4 manner asv the leg portions 22 -of the wire-illustratedv in Figure/i, but

the wire is modied `by the-provision of a. multiplicity of. notches 33 toreceive-theend .loops I9 of the springs i8. The general function `of this form of invention is the same as that. just described, but the notches 33 perform av useful function in `assisting in locating lthe springs I8 along the wire 3| and tin. v:preventing any longitudinal shifting. of ythe loops |9,fwith respect to thev wire.

Onev of the transverse vbands arranged to support: the springv fabric is illustrated' in Figures 2 and 3 of the drawings. In theillustrated` ernbodiment of they invention,y thev spring fabric. |'4 isl provided with two auxiliary supporting bands 35 located aty positionssapproximately 1/3 of Ithe length of the bed- -from each end.` These bands arev supported .by coil springs .36 carried by anchor screws 31, which are threaded into. the side members of the-iframe.

The :supporting bands -35 arecpunched at 38 to lprovideears 39 that are .clinched to individual cables 25, s'o that they will be held in relatively ixed position with respect .to the band :35, and flat wirelinks 4l) are used :to join adjacent pairs of cables and thus provide :a mesh fabric. In the preferred*construction of the spring, Ahow-- ever, theithree cables one-each side 'of the-.bed are not secured,'directly` to `the banda. 35., but are secmed at the opposite endsofitheasp1ing 36. by means of tflat: wire clipsfas illustrated in Figures 2. and 3. The extreme 'side 'cableI is .secured to the anchor screw 3`|A by means of 1a. clipl 4| and the .second and-third cables 4.are secured. between the inner end of the spring 3B and the end of thev .supporting .band 351 by means of. a similar clip 42. `With this arrangemenuthesurface of the spring'f'abric Il` reachesithe ,full vwidth .of .the bed. frame, vandn'furtlfrer; :there :can1never Lbe any interference. betweerrithefcablesrd the supporting fabric and the'coil springs 36,:sincewcables of the fabric do not cross the coil springs. 'I'his eliminates diiiiculties found in various prior-art structures wherein one or more wires of the fabric of the bed spring have been positioned above or immediatelybelow the side coil springs, with the result that they become entangled to the coils of. the spring, damage either the spring or mesh fabric, and thus impair the operation of the assembly.

From the foregoing, it. be. apparent that by practicing the teachings lof'thepresent invention, a novel and highly useful bed spring assembly is provided that accomplishes the objects of the present invention in an eflicient and economical manner, and by the use of a structure that is extremely simple, rugged in use, economical in manufacture, and well adapted to mass-production methods. of: manufacture.

While the present invention has been specil cally designed for military use and is believed to bel particularly welladapted to use. .on army cots and bunks, tits utility is believed to. extend to other fields, and-itis accordingly requested that the .scope .of lthis.invention-be `regarded as limited only by the termsnof. the appended. claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In' abcd' spring including. longitudinal side framemembersl and transverse end frame members,-the combination of aexble mattress supportingwsurface :comprising .a mesh. wire fabric composed 'of a multiplicity of, flexible wire `cables extendingv generally longitudinally of the bed and interconnected with Veach other by clips to form a meshzsurfacepa. multiplicity of coil springs adjacent each end of the frame to support said fabric, each of 'said-springs including an anchor loopsecuredto thefendframezmember` and a free loop at the opposite endfof the'spring, connections betweeri the individual cables of the mattress .supporting fabric. andthe freeloops of said springs including a twisted piggtail joint between' two adjacent iieXible-wire cables of the mattress f supporting. fabric to .form ailoop between the adjacent cablescof `the'fabric; the twisted pigtail connections vbetween the; cables yextending into the coils of the individual springs, so `that the free ends.` of the cables are entirely surrounded and protected bythe convolutions of the coil spring, .together with transversefsupporting bands extending across the-bed l.between the longitudinal side members and coil springs at each end of each of' saidv bands whereby the ybands are resiliently secured totheside ,frame members;

the edge cable ofthe fabric `being, secured to the sidev frame memberv adjacent the anchor end of the coil spring and the second and-third cables being secured to the free loop of said spring, so that the spring-extends across one unit of the mesh surface and. so that no longitudinal cable contacts the convolutions of the spring. 4

2. In a bed spring including longitudinal side frame members vand :transverse end frame mern' bers they combination of a flexible mattress supporting fabric including a multiplicity of wires extending generally longitudinally of the bed; and joined tor eachother .to-form a meshsurface, together with transverse supporting springs extending between the longitudinal side frame members and the fabric so that. the fabric is resiliently secured to the side yframe members; eachv of saidv springs including an anchor loop secured to the side frameand a free loop secured tothe fabric; the structure beingv characterized by the arrangement of the side wires of the fabric wherein the edge wire is secured to the side frame member adjacent the anchor loop oiy the coil spring and the second and third wires are secured to the free loop of said spring.

3. In a bed spring including longitudinal side frame members and transverse end frame members, the combination of a flexible niattress supporting fabric consisting of a multiplicity of iiexible wire cables extending generally longitudinally of the bed and supported by coil springs cables of the fabric wherein the edge cable is secured to the side frame member adjacent the anchor loop of the coil spring and the second and third cables are secured to the free loop of said spring, unit of the mesh 'surface and so that no longitudinal cable contacts the convolutions of the spring. v

4, In a bedspring construction having longituso that the spring extends across one dinal side frame members and transverse end frame members, a flexible mattress including a plurality of cables extending generally longitudinally of said bed, means joining saidlongitudinally extending cables to provide a mesh surface, transverse supporting springs extending between the side frame membersand the mesh surface whereby said surface is resiliently supported by the side frame members, said springs having an anchor loop secured to free loop secured to the mesh surface, means to aiiix the edge cable to said spring adjacent the anchor end thereof, and the second andv third cables being supported by the free loop of said spring whereby the spring extends across one unit of the mesh surface so that the cable elements are held from contact With the convolutions of the spring. l

5. In a bedspring including longitudinal side' `frame members and transverse end frame memthe side frame and a bers, the combination of a ilexible mattress supporting surface comprising a mesh wire fabric composed of a multiplicity of flexible wire cables extending generally` longitudinally of the bed and interconnected with each other by clips to form a mesh surface; a multiplicity of coil springs adjacent each end of the frame to support said fabric, each of said springs including an anchor loop secured to the end frame member `and a free loop at the'opposite end of the spring, connections between the individual cables of the mattress supporting fabric and the free loops of said springs including means between two adjacent flexible Wire cables of the mattress 4supporting fabric to form a loop between the .adjacent cables of the fabric; said last named means extending into the coils of the individual springs, so that the free ends of the cables are entirely surrounded and protected by the convolutions of the coil spring, together with transverse supporting bands extending across the bed between the longitudinal side members and coil springs at each. end vof each of said bands whereby the bands are resiliently secured to the side frame members; the edge cable of the fabric being secured to the anchor end of the coil spring and the second andthird cables being secured to the free 1oop of said spring, so that the spring extends across one unit of the mesh surface and so that the cables are held from contact with the convolutions of the spring.

6. In a bedspring construction having longitu- I dinal side frame members and transverse end 'frame members, a flexible mattress including a plurality of cables extending generally longitudinally of said bed, means joining said longitudinally extending cables to provide a mesh surface, transverse supporting springs extending be- 'tween the side frame members and the mesh surface whereby said surface is resiliently sup ported `by the side frame members, said springs having an anchor loop secured to the side frame and a free loop secured to the mesh surface, clip means Within the anchor loop for securing the edge cable to side frame memberand a second clip means within the free loop to support the second and third cables whereby the spring extends across one unit of the mesh surface so that vthe cable elements are held from contact with 50 the convolutions.

NATHAN C. GOLDBERG.