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Publication numberUS85938 A
Publication typeGrant
Publication dateJan 19, 1869
Publication numberUS 85938 A, US 85938A, US-A-85938, US85938 A, US85938A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improved spring for furniture
US 85938 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

` .uit


13mm raam No. 85,938, dazed Janna/ry 19, 1869.


To all wlwm. 'it ma/y concern:

Be it known that I, J. M. KIRKPATBIGK, of Utica, in the county of Licking, and State of Ohio, have invented a new and' useful Improvement in Springs ;v and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had'to the accompanying drawing, which represents a vertical sectionof the spring.

The nature of my invention consists in constructing springs for upholstery-purposes, composed of wire and India rubber, or other elastic material.'

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction.

In the drawinga represents the wire bent in the usual form of a conical spiral spring, and

b, the India rubber, which surrounds and completely lls the space between the wire.

By making a spring in this manner, the metal is prevented from corroding. The spring is much stronger,

and retains its elasticity longer than those of the ordinary construction, and it is also noiscless in action. The rubber also: keeps the shape' of the spring more perfect, and makes thc action more regular, and Athe Wire acts in the same manner o n the rubber.

The top and bottom of the spring may be closed, by which means the spring is rendered stronger, by utilizL ing the enclosed air, and will bear a greater amount of pressure; or, if deemed preferable, it may be left open either at the top or bottom.

Having thus fully described my invention,

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

The combination of a conical spiral spring with India rubber, or its equivalent, substantially in the manner and for the purpose set forth.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2443201 *Mar 17, 1941Jun 15, 1948Sluyter NicolaasRubber cushioning device
US3361467 *Nov 9, 1964Jan 2, 1968Stanley W. LudwikowskiSpring mounted bumper
US4869471 *Sep 30, 1988Sep 26, 1989Altenkirchener Kunststoff GmbhLength of hose made out of an elastic material that readily recovers its shape
US6931685 *Sep 12, 2003Aug 23, 2005Dreamwell, Ltd.One-sided mattress
US7178187 *Aug 28, 2004Feb 20, 2007Sealy Technology LlcAsymmetric spring components and innersprings for one-sided mattresses
US7418753 *Aug 23, 2005Sep 2, 2008Dreamwell, LtdOne-sided mattress
US7814594Oct 19, 2010Dreamwell, Ltd.One-sided mattress
US20050055778 *Sep 12, 2003Mar 17, 2005Kuchel Bernhard W.One-sided mattress
US20050278862 *Aug 23, 2005Dec 22, 2005Dreamwell, Ltd.One-sided mattress
US20060042016 *Aug 28, 2004Mar 2, 2006Sealy, Inc.Asymmetric spring components and innersprings for one-sided mattresses
Cooperative ClassificationA47C23/007