US2054868A - Bedspring - Google Patents

Description

Sept. 22, 19 36. J SCHWARTZMAN 2,054,868

BEDSPRING Filed April 22, 1935 3 Sheets-Sheet l kie lllllll/lll/l/lI/lIl/l/lll 2a 27 v ,7 [V G mnummmmuua I 22 3 IN VEN TOR.

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Sept; 22, 1936. J. SCHWARTZMAN BEDSPRING 3 Sheets-Shee t 3 Filed April 22, 1935 Patented Sept. 22, 1936 UNITED STATES PATENT OFFECE 6 Claims.

The invention relates to bed springs and has for one of its main objects to provide a bed spring of improved construction in which the spiral springs are firmly connected together to prevent displacement and tilting and to provide for the even distribution of the weight placed on it; and in which all the spaces between the springs are partly covered to provide an even surface between which the bedding will not work down.

Anotherv object is to give added flexibility to all the members used for connecting the spiral springs together so that these connections will in themselves act as spring members.

A further object is to employ double-spiral, in-

verted-cone springs supported and braced in three difierent tiers, so that each tier may gradually take up the weight placed on the bed spring. A still further object is to connect the cross bars to the bed spring frame by spring means so as to impart flexibility to the assembly. Additional objects are to provide a bed spring of light but strong construction, which will give long wear, and which can be adjusted to various heights in relation to the bedstead in which used.

These and various other objects and advantages will be readily understood from the following description and from the accompanying drawings of a preferred embodiment of the in- 39 vention, in which, however, modifications may be made without departing from the scope of the appended claims. V

Fig. 1 is a fragmental top view of the bed spring, showing one corner thereof;

Fig. 2 is a side view of Fig. 1;

Fig. 3 is a top view, taken on lines 3-3, in

Fig. 2;

Fig. 4 is a top view, taken on lines 44, in

Fig. 2;

Fig. 5 is a fragments] top view showing details of certain of the parts shown in Fig. 1;

Fig. dis a similar side view of one of these parts;

Fig. '7 is a fragmental side view of one of the .9. frame structure consisting of side members I0 and end members H. The side members are rigidly secured to the end members by rivet l2, or other suitable means. Or the whole frame may be constructed in one piece. Both the side members and the end members are preferably made of angle iron. A plurality of cross bars I3 are secured to the side frames by means of helical springs l4 so that these cross bars will be resilient in relation to the frame structure.

A plurality of spiral springs A are supported on the cross bar l3 by having a couple of their lower convolutions i5 threaded through holes I6 formed in the cross bars. As will be seen from Figs. 8 and 9, the cross bars are of inverted U 1 shape and provided with side flanges H. The ends of the springs I4 are connected in holes l8 formed in the ends of these flanges. Each of the springs A is formed of two inverted spiral cones and is made from one piece of wire.

Rectangular openings i9 are formed in the cross bars and metal straps 20 are threaded through these openings. The ends 2| of the straps are bent over the outside flange of each of the end cross members. This construction makes the whole bottom part of the bed spring like a single unit to which resiliency is imparted by the springs I4.

Reference is now particularly made to Figs. 1, 2, 5 and 6. A plurality of metal straps 22 are placed diagonally over the top convolutions 23 of the springs A. As shown in Figs. 5 and 6, but omitted from Fig. 1 to simplify that view. a plurality of lugs 24 are sheared from the metal straps 22 and bent downwardly. These lugs are formed in, pairs so that they will straddle the upper convolutlons of the springs A. Rectangular openings 25 are formed through all of the lugs and through these openings metal straps 26 are threaded. As

these straps pass below the top convolutions 23 of the springs, the springs A are effectively clamped between the straps 22 and the straps 26.

The ends 21 of the straps 22 adjacent to the end members I I are connected to these end members by means of helical springs 28. The ends 29 shape so as to be even with the top of the bed 1 spring.

It will be noted that the straps 22 and 28 are interwoven with each other to form a flat surface on top of the bed spring and that this surface, while perfectly yielding, due to the manner in which the straps are secured to the frame structure, effectively prevents the bedding placed on top of the bed spring from working down between the spring, as is often the case in the ordinary constructions.

Referring now particularly to Figs. 3 and 7, the large center convolutions 35 of the springs A occupy a central position in the vertical assembly of the bed spring. As previously said, each of the springs A is formed from one piece of wire. This is accomplished by connecting the large center convolution 35 with the small convolution 36, of the upper part of the spring, by a convolution 31 which lies practically in the same plane as the convolution 35.

A plurality of metal straps 38 are provided at regular intervals with a downwardly-offset part 39 so that a plurality of slots 48 are formed lengthwise with the straps. The convolutions 35 of the springs A are passed through these slots so that a strap is located on each side of each spring, except the outer side rows of springs. A plurality of short metal straps 41 are threaded through each spring and through the slots in the metal straps 38; after which their ends 42 are bent down under the convolutions 35. This effectively clamps the straps 38 to the springs A. While I prefer to use the short straps 4| shown, it is evident that these straps might be run clear across the bed spring, instead of being made in short pieces to clamp each individual spring.

A plurality of slots 43 are also formed in the straps 38 by shearing down a portion of the strap, as plainly shown in Fig. '7. A plurality of metal straps 44 are threaded through these slots, as shown in Fig. 3. The ends 45 of the straps 38, the ends 46 of the straps 44, as well as the ends 41 of the outer rows of straps 4i are all held in place by a helical spring 48 which is threaded through holes formed in all these ends and completely surrounds the large convolutions 35 of all the springs A. It will be noted that this center tier of connections forms a complete unit, which is independent of the frame structure of the bed spring and may yield in any direction.

Slots 49 are formed in the upwardly extending members 50 of the side frames I0 and in these slots a threaded stud 5|, shown in detail in Fig. 10, may be slidingly adjusted ,by means of a nut 52 and a flange 53. A pin 54 extends outwardly from the flange. By adjusting these pins, the bed spring may be placed at various heights in relation to the bed in which used, as the pins 54 rest on the, side bars of the bed stand.

From the foregoing it will be evident that, since all the spiral springs are connected to each other, any weight placed on any one or more of these springs will immediately be distributed to all the springs by the connecting means employed. It will also be seen that any weight placed on the bed spring will gradually be distributed to the three tiers of which the spiral springs are made up. It will also be noted that the whole assembly comprising the spiral springs, connecting straps and cross bars is yieldingly connected to the frame structure so that these parts may be said to float in the frame structure.

Having described the invention and its objects, what I claim is new and wish to protect by Letters Patent is:

1. A bed spring comprising a frame structure consisting of a pair of end members located in the same plane and a pair of side members located a considerable distance below said end members; a plurality of cross bals connected 5 between the side members of the frame structure; a plurality of double, inverted cone-shaped, spiral springs s' pported on said cross bars and having their 1\ lver ends attached thereto; a plurality of straps placed diagonally across the up- 10 per ends of the spiral springs; means for securing said straps to the spiral springs; and the ends of all of said straps secured to the end members of the frame structure by resilient means.

2. A bed spring comprising a frame structure consisting of a pair of end members located in the same plane and a pair of side members located a considerable distance below said end members; a plurality of cross bars connected between the side members of the frame structure 0 by resilient means; a plurality of double, inverted cone-shaped spiral springs supported on said cross bars and having their lower ends attached thereto; a plurality of metal straps placed diagonally across the upper ends of the spiral springs; means for securing said straps to the spiral springs; and the ends of all of said straps secured to the end members of the frame structure by resilient means.

3. A bed spring comprising a frame structure consisting of a pair of end members located in the same plane and a pair of side members located a considerable distance below said end members; a plurality of cross bars resiliently connected between the side members of the frame structure; a plurality of double inverted conical-shaped spiral springs supported on said cross bars and having the lower ends attached thereto; a plurality of metal straps placed diagonally across the upper ends of the spiral springs; means for securing said straps to the spiral springs; the ends of said straps secured to the end members of the frame structure by resilient means; connecting straps secured to the center convolutions of each of said spiral springs; and the ends of all of said connecting straps secured together by a flexible member.

4. A bed spring comprising a frame structure consisting of a pair of end members located in the same plane and a pair of side members located 50 a considerable distance below said end members; a plurality of cross bars connected between the side members of the frame structure by resilient means; a plurality of double inverted conicalshaped spiral springs supported on said cross bars and having the lower ends attached thereto; a plurality of metal straps placed across the upper ends of the spiral springs; means for securing said straps to the spiral springs; the ends of said straps secured to the end members of the frame structure by resilient means; connecting straps secured to the center convolutions of each of said spiral springs; and the ends of all of said connecting straps and the center convolutions of the outer spiral springs secured together by a flexible member.

5. A bed spring comprising a frame structure consisting of a pair of end members located in the same plane and a pair of side members located a considerable distance below said end 70 members; a plurality of cross bars resiliently connected between the side members of the frame structure; a plurality of double inverted conical-shaped spiral springs supported on said cross bars and having the lower ends attached thereto; a plurality of metal straps placed diagonally across the upper ends 01' the spiral springs; means for securing said straps to the spiral springs; the ends of said straps secured to the end members of the frame structure by resilient means; connecting straps secured to the center convolutions of each of said spiral springs; slots formed lengthwise of each of said connecting straps; a plurality of cross straps inserted through said slots; and the ends oi all of said connecting straps, cross straps and the center convolutions of the outer spiral springs secured together by a flexible member.

6. A bed spring comprising a plurality of cross bars; a plurality of double inverted conicalshaped spiral springs supported on said cross bars and having their lower ends attached thereto; openings formed in said cross bars; a plurality of straps inserted through said openings at right angles to the cross bars; a plurality of double inverted conical-shaped spiral springs supported on said cross bars and having their lower ends attached thereto; a plurality of straps placed diagonally across the upper ends of the spiral springs; means for securing said lastmentioned straps to the spiral springs; connecting straps securedto the center convolutions of each of said spiral springs; slots formed lengthwise of each of said connecting straps; a plurality of cross straps inserted in said slots; the ends of all of said connecting straps, cross straps and the center convolutions of the outer spiral spring secured together by a flexible member; all of the above parts forming a self-containing unit; a frame structure consisting of a pair of and members located in the same plane and a pair of side members located a considerable distance below said end member; and said self-containing unit connected to the frame structure by resilient means.

JACOB SCHWARTZMAN.

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