US262365A - Spring mattress or bed-bottom - Google Patents

Description

(No Model.)

W. BULKELEY.

SPRING MATTRESS 0R BED BOTTOM.

No 262,365. Patented Aug. 8, 1882.

W K M rrnn STATES ATEN'I Farce,

.WORTHINGTON BULKELEY, OF CLEVELAND, OHIO.

SPRING MATTRESS OR BED-BOTTOM.

SPECIFICATION forming part of Letters Patent No. 262,365, dated August 8, 1882.

Application filed February 6, 1882.

To all whom it may concern Be it known that I, WonrnING'roN BULKE- LEY, a resident of Cleveland, county of Guyahoga, and State of Ohio, have invented certain new and useful Improvements in Spring Mattresses or Bed-Bottoms; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

My invention relates to mattresses or bedbottoms constructed with a supporting-frame and spiral springs.

It has for its object the production of a bedbottom whigh may be readily folded up for transportation and as readily adapted to beds of different widths.

In the accompanying drawings, Figure 1 is a plan view of my improved folding spring bed-bottom; Fig. 2, an end view of the same opened out; Figs. 3 and 4, side and end views of the same when folded up; Fig. 5, a detached view, illustrating a modification in the hinged joint.

The foundation of this spring bed-bottom consists of a series of parallel slats, A A, connected by means of transverse strips B B B B These transverse connecting-strips may be either rigidly secured to the slats, as shown at B B, or, in order to adapt it for use upon beds of different widths and for greater convenience in transportation, may be hinged to one of the slats and made to extend diagonally over the others and be connected thereto by a slotted sliding joint, as shown at B B In combination with these diagonal jointed connecting-strips B B brace-plates B B are employed to prevent a longitudinal movement of the slats in opening and closing. These brace-plates are secured to the slat to project at a right angle thereto over the next slat, to which it is connected by means of a slotted sliding joint, a pin, it, on the slat being made to project through a slot in the brace-plate B as shown in Fig. l. The two middle slats, A A, of the bed-bottom are connected by hinged joints formed by two or more pairs of bent bars, W WV, properly secured thereto, whose ends, projecting from the slats at a right angle thereto, are each bent up at an angle to (No model.)

the plane of the slat, as shown in the drawings, and are at the same time twisted so as to bring the face of the projecting end of each in a plane at right angles to that of the,slat. These ends are either hinged directlytogether, as seen in Fig. 5, or otherwise, and preferably are connected by anintermediate pivoted link, 0, as clearly shown in Figs. 2 and 4 of the drawings. One or more stay-bars, D, pivoted to one of the middle slats, extend across to the other. Each stay-bar is provided with an eye upon its outer free end to fit over a stud, (1, upon the opposite slat. (See Fig. 1 of the drawings.) These stay-bars, when thus extended from the one slat to the other and secured by the stud, as described, prevent the bed-bottom from folding up or giving at its joint. When it is desired to fold the bed the stay-bars are disengaged from the stud and swung back upon the slat, as shown by the dotted lines, Fig. 1.

The bed-bottom thus constructed of a series of slats adapted to be folded and doubled over by means of central hinges, NV W, is completed by securing upon said slats a series of conical wire springs, G G, arranged either in regular or alternate order upon the slats to which they are secured, and these springs maybe coupled together by means of coiled wires connecting their upper ends, which serve to secure them properly and yet allow them free play, and at the same time permit the bed-bottom to be readily folded, or they may be otherwise coupled bytlexible links or chains of webbin WVhere the slotted bottomis made adjustable,as shown onthe right in Fig. 1, one or more of the pins projecting through the slots in the diagonal strips may be threaded and provided with thumb-nuts, whereby the strips may be locked and the bed-slats fixed at any point of adjustment.

I am aware that bed-bottoms have been heretoforeconstructed with jointed or hinged foundation-pieces; but

I Vhat I claim as new, and desire to secure by Letters Patent, is-

1. In ajointed folding bed-bottom upon the slats of which are secured spiral springs, the

combination, with the springs and slats, of the hinge-barsWW, secured to the slats and bent upwardly toward the top level of the springs,

link, (3, pivoted at each end to the end of the liinge-bars, substantially in the manner and for the purpose herein set forth.

In testimony whereof I have signed my name 15 to this specification in the presence of two subscribing witnesses.

W'ORTHINGTON BULKELEY.

Witnesses J OHN T. MORTON, L. H. WARE.

Images