US760746A

US760746A - Spring bed-bottom.

Info

Publication number: US760746A
Application number: US17985503A
Authority: US
Inventors: Albert J Logan; John Franklin Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-11-04
Filing date: 1903-11-04
Publication date: 1904-05-24
Anticipated expiration: 1921-05-24

Description

SPRING BED BOTTOM.

APPLICATION FILED NOV. 4, 1903.

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No. 760,746. I PATENTED MAY 24, 1904.

A.,J. LOGAN & JQTJBROWNL SPRING BED BOTTOM. APILIOAIION FILED NOV. 4. 1903.

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a r f ALBERT LOGAN AND Patented Ma 24 1.

JOHN FR ANKLIN BROWN, OF-FITTSBURG, PENNSYLVANIA.

SPRING BED-BOTTOM.

' a sPEcIFIcATmN forming part of Letters' P'atent N0. 760,746,;1ated May 24; 1904.'

Application t1edNtvamber4,1903.' Seria11To.179,85 5. (Nb model.)

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Be it known that we, ALBERT J LOGAN and JOHN-FRANKLIN BROWN," residentsof Pittsburg, in the county of {Allegheny and State of Pennsylvania, have invented anew and useful Improvement in Spring Bed-B ottomsj and we do hereby declare the following to be af ull, clear, and exact description thereof.

Our invention relates to a base or support for spiral or helical springs for use in beds, couches, seats, and the like. Its object is to provide a. strong rigid base and a manner ofattaching the springs ,to the same in a neater, more secure, and economical way than has heretofore been accomplished.

1n the accompanying draw1ngs,F1gure 1- is a plan view of a portion of the bed-bottom constructed according to our invention. Fig.-

2 is an end view of the same. Figs. 3 and 4 2o "of applying the springs thereto.

are opposite side views showing the manner Flg. 5 1s a section on the line 5 5, Fig. .1. Fig. dis a ing the spring thereto.

similar section on the line 6 6, 1. Fig. 7 is a bottom View of one of the cross members or slats, showing the manner of apply:

Fig. 8- is a detail view showing the manner. of-applying the crossbars to the side members, and Fig. 9 is a-plan view of the blank from which the cross-bars are formed. 1

Spring bed-bottoms provided with metal bases should be light in weight and should also be made in sections to permit easy handling thereof and to prolong the life oruseful ness of the springs. A spring bed-bottom made in three interchangeable sections can be easily handled and will'outlast three onepiece bottoms made in the usual manner, for the reason that the damage or depression to the springs invariably occurs at or near the middle of the bed, and therefore unless the middle section can be moved to the head or foot and replaced by one of its fellows the bed-bottom as a whole becomes useless.

Our invention is adapted for making bedbottoms either in three interchangeable sections or in a single piece. In the drawings only one such section has been shown;'but as the other two sectionsare identical in structhe length of the section shown a .bed-bottom may be formed.

Inthe drawings the side railsv of the bed '55 ture with the'oneshown-a description of the 5 one will sufiice' for all, and it will alsobe readily understood thatby merely extending one-piece are shown; at' 1,- these being shown of angle shape, as 18 common in ron bedsteads, Our improved base or'supportcomprises a series v of cross-bars or slats 2, which are of invertedtrough shape, as shown, and suitably secured at their ends to side members 3, the latter being ordinary commercial plates QIEbaFS of-the desired dimension,- and which can ,be cut off square at their ends either for forminga sec-' tional bottom orextended the entire length 5 of the bed for forming a, one piecebottom. The cross-bars 2 are provided at their ends with-shoulders 4, and in assembling these with the side members the latter are brought up firmly against said shoulder, thus forming 7 a rigid base which will not become askew and obviatlng the necessity of diagonal bracing,

1 thus considerably lightening the same.

Thecross-bars 2 are preferably formed of inverted-trough shape; as shown, ,having the two side portions 5 substantially vertical, so as 'to verygreatly stiffen the same, thus mak-' ing it possible to use plate metal of very thin gage and greatly lightening the-base, but at the same; time getting sufficient strength.

These cross-bars are made by taking flat plates of the desired width and thickness and first stamping them outat the ends to form the notches 6 and the holes 7, the latter serving for the passage of the rivets 8, which secure 5 saidcross-bars to the side members 3. Intermediate their ends the plates are punched with groups of holes of three each 10, 11, and 12. This plate is then either rolled 'or bent by means of dies into the shape shown in Fig." 9

members in the manner above described, so as to get a rigid base without the use of diagonal bracing.

The springs 15 may be of any form of spiral the end is crimped or bent, as at 16, thus preventing said spring from becoming detached; but as this end lies in the trough-shaped bar it is out of the way and cannot tear the bed ding or otherwise be objectionable.

At the tops the springs may be connected by any suitable device known for this purpose, that shown in Fig. 1 being the same as that covered by Letters Patent toJohn Franklin Brown, No. 704,674, dated July 15, 1902; but as it is not claimed herein it need not be described.

It will be observed that the base described is simple of construction, strong, and very light. The shape of the cross-bars, having the two side walls thereof substantially vertical, gives the necessary strength so that very thin gage metal can be used, and at the same time they form a suitable place for the holes into which the springs are threaded. The central ridge 14 furthermore is made of a height somewhat greater than the distance between adjacent coils of the springs, so that when the latter are threaded into place this ridge serves to hold the two lower coils somewhat spread apart, as indicated in Fig. 5, thus holding the second coil 17 under tension and obviating the possibility of vibration and rattling. The cross members are all identical, and the side members are formed of ordinary fiat commercial metal, so that only two shapes of iron are used and the connection between these being such that diagonal bracing is dispensed with.

We of'course are aware that spring-bottoms have heretofore been made in sections; but each section has required additional material and labor, thus adding to the cost of the same. With our base, however, the construction is such that asectional base can be made just as economically as a one-part base, it merely being necessary to cut the side members 2 into sections, this being the only additional labor on a sectional base over that of a one-part 7 base.

What we claim is 1. A base or support for the springs of beds and the like comprising side members, metallic cross members of inverted-trough form from end to end, said cross members having their side walls cut away at the ends and having their curved top portions projecting over the side members, means. for securing said projecting end portions to the side members, and coiled springs supported by said cross members. i

2. A base or support for the springs of beds and the like comprising side members, metallic cross members of inverted-trough form from end to end, said cross members having their side walls cut away at the ends to form vertical shoulders and having the projecting portions extending over the side members with the vertical shoulders bearing against the side members, means for securing said projecting end portions to the side members, and springs supported by said cross members.

3. A base or support for the springs of beds and the like comprising a series of metallic cross-bars of inverted-trough form provided with holes in the sides thereof and a longitudinal ridge on their upper sides, a series of springs threaded, throi1gh the holes in said bars and having one coil thereof pressed upwardly by said ridge and having their ends bent over inside of said trough-like cross- ;bars, and side members to which said crossbars are secured.

4. A base or support for the springs of beds or the like, comprising a series of metallic cross-bars of inverted-trough form provided with holes in the sides thereof and a longitudinal ridge on their upper surfaces, a series of springs threaded through the holes in said bars and having one coil thereof pressed upwardly by said ridge, and side members to which said cross-bars are connected.

5. A base or support for the springs of beds and the like, comprising a series of metallic cross-bars or slats of inverted-trough form from end to end and having vertical side walls provided with groups of holes therethrough and with vertical shoulders at their ends, and having end portions projecting beyond said shoulders, side members secured to the projecting ends of said cross-bars and bearing against the shoulders of the latter, and springs threaded through the holes in said cross-bars.

In testimony whereof we, the said ALnalrr J. LOGAN and J omv FRANKLIN BROWN, have hereunto set our hands.

ALBERT J. LOGAN. JOHN FRANKLIN BROVN.

Witnesses:

MARGARET O. Knnnnn, ROBERT C. To'r'rmv.