US1150867A - Spring bed-bottom. - Google Patents

Description

W. F. KUNKEL.

SPRING BED BOTTOM.'

APPLICATION FILED FEB. 8| 1912. 1,150.87.

Patented Aug. 24, 1915.

awww/1410@ WILLIAM F. KUNKEL, OF MILWAUKEE, WISCONSIN.

SPRING BED-BOTTOM.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed February 8', 1912. Serial N o. 676,265.

To all whom it may concern.'

Be it known that I, lVrLLrAM F. KUNKEL, 'a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Spring Bed-Bottoms, of which the following is a specification.

My invention relates to improvements in spring bed bottoms, with particular reference to that class of such devices in which the margins of the spring are turned upwardly for the purpose of retaining a mattress in position.

The ob] ect of my invention is to simplify the construction of bed bottoms of the described class, whereby bed bottoms having up -turned woven wire springs may be formed without increasing the number of parts and with very little increase in the eX- pense of construction over what is required for bed bottoms having ordinary flat springs.

In the drawing the gure illustrates in perspective, one end portion of a bed bottom embodying my invention.

My improved bed bottom is formed with a frame compo-'sed of side bars A, A, and end bars of angle iron having a down-turned flange B and a horizontal flange C. The horizontal flange is provided at each end with integral upwardly projecting lips or members D. These end bars may be formed of any ordinary piece of angle iron of the required length by cutting out an end section from each end of the flanges B and bending the ends of the other flange upwardly to form the members D. A woven wire spring E is adjusted over the upper surface of the flange C at each end of the bed frame, and its side margins are turned upwardly and lapped upon the inner surface of the member D. The, spring is then secured to the flange C and members D by a clamping member F, having up-turned integral end portions G. This clamping member is adapted to snugly fit between the upturned end portions D and may be secured by bolts or rivets to said members D and to the flange C, the ends of the woven wire spring being securely clamped between the clamping member and the members C and D.

It will of course be understood that the respective ends of the bottom frame are formed alike, each comprising but two pieces of material, one of which is shaped to form the members B, C and D, and the other of which is shaped to form the members F and G. I am therefore able to construct bed bottoms of this type with the same facility that flat bed bottoms have heretofore been constructed and substantially the only difference in expense consists in the additional material required for the up-turned portions. The cost of constructing and assembling is not materially increased. It will also be observed that by forming the 11p-turned members D and G integrally with the members C and F,'a structure of great strength and rigidity is provided. This is important for the reason that the strains exerted by the woven wire are heavy, such wire being secured in position under high tension.

I claim:-

1. A metallic frame for a spring bed bottom, having an angle iron end member provided with a horizontal flange upturned at each end, in combinati-on with a woven wire spring having its ends lapped upon said horizontal flange and upon the upturned end portions, a retaining member having a horizontal portion and up-turned end portions fitting between the upturned end portions of the angle iron fiange and connected therewith in clamping relation to the ends of the woven wire spring.

2. A metallic frame for ay spring bed bottom, having an angle iron end member rigidly connected with the side bars and provided with a horizontal flange having integral upturned end po-rtions, in combination with a woven` wire spring having its end portion lapped upon said horizontal flanges and upon the inner faces of the upturned end portions, and rigidly secured thereto.

In testimony whereof I aliiX my signature in the presence of two witnesses.

WILLIAM F. KUNKEL.

Witnesses:

LEVERETT C. WHEELER, I. D. BREMER.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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