US358563A - Spring-cushion - Google Patents

Description

(No Model.)

G. MURRAY.

\ SPRING CUSHION.

No. 358,563. Patented Mar. 1, 1887.

UNITED rarns GEORGE W. MURRAY, OF BLUFFTON, OHIO.

SPRING-CUSHION.

SPECIFICATION forming part of Letters Patent No. 358,563, dated March 1, 1887.

Application filed December 17, 1885. Serial No. 185,942.

To all whom it may concern:

Be it known that I, GEORGE W. llIURRAY, a citizen of the United States, residing at Bluffton, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Spring-Cushions, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to spring-cushions for carriage-seats, it being an improvement upon the invention described and shown in Letters Patent No. 324,335, issued to me August 11, 1885, and has for its object the provision of a cushion having a slat-bottom adapted to rest firmly upon the bottom of a carriage or other.

vehicle seat without interfering with the angle or base irons thereon, a flexible top adapted to receive a cover or pad, springs interposed between said slat-bottom and flexible top, and means whereby the vertical action of said springs is controlled and all liability to lateral displacement thereof prevented.

In the accomplishment of the above obj ectmy invention consists in the construction,arrangement, and combination of parts, as hereinafter described, and more particularly pointed out in the claims.

In the drawings, Figure 1 represents a top plan view of my improvement. Fig. 2 repre sents a top plan view of the slat-base thereof. Fig. 3 represents a detached detail view of parts of my improvement; and Fig. 4 represents a part of a vehicle-seat, showing a portion of the slat-bottom, on the line g y of Fig. 2, in position thereon.

Similar letters of reference in the several drawings denote like parts.

Referring to the drawings,'A designates the complete cushion; B, the slat-bottom thereof; 0, the flexible top, and D D a series of springs interposed between said bottom B and top 0.

The bottom B consists of a series of longitudinal slats, b b, which intersect transverse slats I), which are secured to the longitudinal slats at their intersecting points by suitable screws or nails, b

By reference to the drawings it will be seen that the rear longitudinal slat, b, is secured to the transverse slats 1) upon the upper surface thereof, while the remaining longitudinal slats,

(No model.)

I), are secured to the lower surface thereof. I deem this arrangement of slats of importance, whereby the slats b are adapted to rest firmly upon the bottom of the carriage-seat (see Fig. 4) and allow the lower arms of the angle-irons x, which secure the bottom and back together,

to pass below said rear slat, b, and at the same time permit the lower ends of the angle-irons, which secure the bottom and sides of the seat together, to pass below the transverse rail at each end of the slat-bottom B.

I preferably make the top 0 of woven-wire clot-h, securing the edges thereof to a metal rod, 0, in any suitable manner.

D D designate springs, interposed between the bottom 13 and the flexible top 0. Of said springs I preferably make the former, D, the larger, both as regard their diameter and their length, and as said springs are designed to bear the greater portion of the weight upon the cushion, I secure their lower ends to the middle longitudinal slats, b, at points equidistant from the transverse slats b".

The series of smaller springs, D, operate in a twofold capacity, to wit: first, to give a greater degree of elasticity to the flexible top C, and, second, to prevent lateral movement of said top. In accomplishing the first-named capacity I preferably employ a greater number of said smaller springs, D, than of the springs D, and secure said smaller springs to the slats at the following named points, namely: at the front of the cushion I secure the lower end of a spring to the forward end of each transverse slat, at points m, (see Figs. 1 and 2,) above the forward longitudinal slat, b; at the rear end of the cushion I secure an equal number of springs to the upper surface of the longitudinal slat b, at the points it, above the ends of said transverse slat-s; and I also secure a spring to the middle of each end slat, as shown at points 0. When placed in the positions described, it will be apparent that the springs D D operate in conjunction to give great elasticity to the top 0. The series of springs D are consequently less elastic, and thus operate to give a less degree of resiliency to proper parts of the cushion-viz., the front, rear, and sides.

To enable the springs D to fulfill the second function thereof, hereinbefore referred toviz., preventing lateral. movement of the top which said braces are secured to the slat-bottom is designated by letter, as follows: The braces D of each of the springs D upon the rear slat, b,'project forward and are secured at their free ends Z upon the transverse slats If. The braces of the springs secured to the middle and forward ends of the end slat projeet laterally and are secured at points 7.; upon the next adjacent transverse slat, respectively, While the braces of the springs secured to the forward end of the remaining transverse slats project rearwardly and are secured to said slats at points h, at or near the middle thereof. By this described system of bracing, the top is held against lateral motion, but is free to move in vertical direction.

As hereinbefore stated, I preferably make the top 0 of woven-wire cloth, and secure the same to the tops of the springs D D by means of wire loops or fastenings d, in manner and form similar to that shown in my former Letters Patent hereinbefore referred to.

Modifications in ,details of construction of my improvement may be made without departing from the spirit or sacrificing the advantages of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a s )ring cushion, a bottom consisting of a series of unequally-spaced longitudinal slats, as 1), three or more transverse slats, as b", crossing and secured to the upper surface of said longitudinal slats, and a longitudinal slat, as Z), secured to the upper surface of said transverse slats at the rear ends thereof, whereby interference with the angle-irons is prevented, substantially as described.

2. In a spring-cushion, a spring having its upper coil prolonged in the form of a double ogee curve, the end of which is secured to the supporting-fran'ie at a distance from the spring, in combination with a second series of larger springs, continuous wire top, and supportingframe.

In tcstimon y whereof I affix my signature in presence of two witnesses.

GEORGE \V. MURRAY.

Images