US91738A

US91738A - Improved spring-bed bottom

Info

Publication number: US91738A
Authority: US
Publication date: 1869-06-22
Anticipated expiration: 1886-06-22

Description

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ROBERT A. GOODYEAR, OF BINGHAMTON, NEW YORK.

Leners Patent No. 91,738, dated ame 22, 1869.

IMPRO'VED. SPRING-BED BOTTOM.

The Schedule referred to in these Letters Patent and making of the same.

To all whom it may concern Be it known that I, ROBERT A. GOODYEAR, of Binghamton, in the county of Broome, and State of New York, have invented and made a new and useful Improvement in Spring-Bed Bottoms; andI do hereby (leclare the following to be a full, clear, and exact description of the said invention, reference being had to the annexed drawing, making part of this specification, wherein- Figure lis a side elevation, showing a portion of one of the slats of the bed-bottom; and

Figure 2 is a plan representing portions of three of such slats.

Similar letters denote the same parts.

In the manufacture o f spring-bed bottoms, diiiiculty has been experienced fromthe weight coming only upon a portion ofthe slats, and causingthe same to bend unduly or break, and efforts have been made to construct slats-that would have a spring througllout their vlength of a nearly uniform character, but without success, as' far as known, previous to' my inl vention.

lhe nature of my said invention consists in a spring slat for bed-bottoms, formed of parallel-motion links, connecting the top and bottom slats, in combination with springs that act to keep the slats apart; the operation being that the slat receives a partial endmotion by theparallel links, as the springs are compressed, and henee,'tllat the top slat moves throughout its length, parallel, or nearly so, to the standing bottom slat. By this const-ruction,'the weight of the person, upon any part of the slat, acts upon all the springs of that slat, in consequence of the parallel Y movement of the slat, as depressed; hence, the slats can be of thinner material `than heretofore, and each spring of less strength, because the weight is distributed by the parallel movementover a greater extent of surface.

In the drawing, a is the bottom slat; b, the top Slat; cc, the parallel-motion links, hinged at'2 and 3, to'the respective slats a and b and d represents the spring.

These slats, a and b, are to be of any desired length, so as to lie longitudinally or transversely in the bedstead, or compose portions of sectional slats, more or less in number, set together to form the spring-bed bottom. u l

The slats a are to be sutlciently strong to bearthe weight, or else they are to rest vupon the usual slats of the bedstead.

The springs (l are to be of any usual character, and should beV attached to the slats, both at top and bottom.

The links c c are applied at suitable distances apart, along the slats, and are parallel to eaclr other, and keep the slat b parallel to the slat a, as th'e former is depressed by any weight, in order that the action may be uniform, as aforesaid.

What I claim, and desire to secure by Letters. Pat- The parallel links c c, hinged, at their ends, to the top slat b and bottom slat a, in combination with the spring, or springs, intervening between said slats, as andgfor the purpose set forth.

In Witness whereof, I have hereunto set my signature, this 18th day of May, A. D. 1869. l

ROBERT A. GOODYEAR.

-Witnesses:

Guns. H. SMITH, GEO. T. PlNoKNEY.