US1111076A - Bed-spring. - Google Patents

Description

W. LEWIS.

' BED SPRING.

APPLICATION FILED APR.25L1914.

1,1 1 1,076., Patented pt. 22, 1914.

flwrlvsssss: IN EN T01? flTTOR/VEM THE NORRIS PETERS CO., PHOTD-LITHQ, WASHINGTON, D. C.

UNITED STATES PATENT OFFICE.

WILLIAM LEWIS, 0F UTICA, NEW YORK.

BED-SPRING. f

Specification of Letters Patent. Original application filed December 24, 1910, Serial No. 599,130. Divided and this application filed April Patented Sept. 22, 1914.

25, 1914. Serial No. 834,316.

To all whom it may concern:

Be it known that I, WILLIAM LEWIS, of

Utica, in the county of Oneida, in the State of New York, have invented new and useful Improvements in Bed-Springs, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in coil springs adapted to be used for spring beds, sofas and similar upholstered articles of the class set forth in my end- .ing application Serial No. 599,130, filed December 24:, 1910, of which the present application is a division.

The primary object is to build up certain portions of the bed as, for example, the head by the use of the sectional coil springs arranged in rows or sets, the junctions of the sections of each row or set being connected by floating tie bars for the purpose of bracing the sections against relative lateral displacement or buckling, and at the same time distributing the load which may be applied to the upper ends of the upper sections to a greater number of the underlying sections, thereby establishing compensating resistance for varying loads and effecting a more uniform restoration of the springs to their normal positions when the load is removed.

Other objects and uses relating to specific parts of my invention will be brought out in the following description.

The drawing is a longitudinal vertical section of the head end of a bed, showing my improved construction.

In carrying out the objects stated, I have a plurality of, in this instance two, sets or rows of triple deck spring coils A and other rows or sets of double deck coil springs C in the body of thebed, the several rows or sets and also those of each row or set being spaced equi-distant apart so that the sections of each spring are co-axial and the axes of the several springs are vertical and parallel.

Each of the coils A is preferably formed of a single piece of suitable spring wire, soiled to form three co-axial sections, one above the other, which for convenience of description may be termed an upper end section 5, a lower end section -6 and an n rmediate se ti n 7 th and see" tions being conical and reversely arranged to that their larger ends are respectively at the top and at the bottom, while the intermediate section is of substantially the same diameter as the adjacent smaller ends of the end sections.

The lower end sections of the coils A and C are of substantially the same vertical height, suflicient to give the desired resiliency, and are disposed in substantially the same horizontal plane, the convolutions at their smaller ends being preferably close to gether, while the remaining convolutions are spaced some distance apart to afford the desired spring action.

The intermediate sections -7 of the coils A are preferably of substantially the same vertical height as the lower sections -6 and the end convolutions thereof are also close together, while their central portions are spaced apart to afford the necessary spring action. In like manner, the convolutions on the lower ends of the sections 5 of the coils A, and also of the coils C, are close together and their remaining portions spaced apart for the same purpose, the vertical height of the end row ofthe sections -5- being substantially the same as that of the sections -6- and -7, while the upper coils of the next adjacent inner row are of slightly less vertical height to give the desired inclination or pillow effeet to the upper surface of the head end of the bed spring. For a similar reason, the vertical height of the upper sections of the coils C in the row nearest to the coils A are of greater vertical height than the intermediate sections of the coils A, but of less vertical height than the combined height of the sections 5 and 7-, whlle the remaining upper sections of the coils C in the body of the bed may be of approximately the same height as that of the intermediate sections of the coils A so that their upper ends will lie in substantially the same horizontal plane.

The closely coiled convolutions at the junctions of the upper and intermediate sections of the coils A of both sets are connected by brace bars 8, while those at the junctions of the intermediate sectlons wlth the lower sections of the same sets are connected by brace bars 9. The junctions of the upper and intermediate sections of each row are connected by a brace bar 11, ,f w hile the junctions of the intermediate and lower coils of each row are connected by a brace bar 12, said brace bars being provided with raised oflsets -10- entering he openings in the adjacent ends of i the superposed sections to firmly secure said sections to the brace bars and thereby hold the intermediate portions of the springs, against relative lateral movement or buc kling.

The brace bars 9 are extended between the meeting ends of the sections of the coils C at their junctions one with the other and are'provided with additional raised portions 1.0 entering the openings in the adj acent portions of the coils C, thereby tying to each other and to the coils A. The junca system of the junctions of said coils to the correspondingunctions of the sections -6 and -7 of'th'e coils A to brace the sections of the coils C against lateral'movement relatively movement serve to distribute any load which maybe applied to any one of the springs to several of the adjacent springs, thus relieving any one spring or set of springs from excessive strain and adapting the entire system'of' springs to a wider range of loads than would be possible if the springs were not'tied together by brace bars at the junctionsof the sections in the manner described. As a further means for preventing relative displacement of the springs, the larger ends of the upper and lower coils are connected by flexible ties or chains -22,

By tying the ends of the adjacent sets of springs together by means of the tie members and brace bars -8-' and it is only necessary to use rails 1L- under every other set of springs, while the cross bars 'f'12- may be limited in number to every third or fourth set of springs to brace the lengthwise bars -9 against relative lateral movement, which bars 9 will perform their respective functions in holding the springs A and C against buckling or relative lateral movement.

Itwill be'observed that the brace bars -8-, 9, 11'" and 12 are interposed between the convolutions at the junctions of'the coils which they intersect and are't herefore interlocked with said coils by means of the raised portions 10 to prevent relative movement of the-coils and-brace bars.

What I claim is:

1. The combination in a bed spring of three-section coils of similar material throughout, the upper and lower sections of which are. cone-shaped and taper toward each other, the middle section of which is cylindrical in form and of smaller convolu tions, coils of two cone-shaped sections tapering toward each other, braces connecting the junctions of the sections or the adjacent two-section coils, braces connecting similar junctions of the sections of threesection coilsand braces connecting the junc-- tions of two-section coils to one of the junctions of the adjacent three section coils.

2. In a spring bed, a set of three-section coils, a separate set oif two-section coils,

floating brace bars connecting corresponding junctions of the sections of'the firstnamed set, and additional brace bars connecting the junction of two of the sections of the first named set with the junctions of the sections of the separate setf I 3. In a spring bed, aset of triple-deck springs, a separate set of two-deck springs, floating brace bars connecting the lower decks of the springs of both sets, and aseparate brace bar connecting the upper and intermediate decks of the first-named set 4L In a spring'bed, a plurality of sets of triple-deck coil springs, separate sets" of double-deck coil springsythe'lower and upper sections of each deck being conical with their smaller ends adjacent, floating brace bars connecting the upper ends of the sections of thelo'wer decks of both sets,and a separate floating br bar connecting the lower ends of the upper deck sections of the first-named set, the middle deck sections of said first-named set being of relativelysrnall diameter and having their opposite ends engaged with the adjacent'brace bars, a

5. In a spring bed,'ase.t of triple-deck coilshaving their upper deck sections conical and their middle deck sections of relatively smaller diameter than the larger ends of the conical section's, floating brace bars connecting the junctions of the upper and middle 'de'ck section's witheach other and separate floating brace bars connecting the junctions of the lower and middle seetiens with each other.

In witness whereof I have hereunto set my hand this 22d day of April, 1914;

L IAM LEWIS,

Washington, D. Q.

Me n th a e a -e e was

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