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Publication numberUS357183 A
Publication typeGrant
Publication dateFeb 8, 1887
Filing dateJul 15, 1886
Publication numberUS 357183 A, US 357183A, US-A-357183, US357183 A, US357183A
InventorsChaeles E. Davis
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tilting-chair
US 357183 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

(NovMoael.) C. E. DAVIS.

TILTING CHAIR.

Patented Peb.

Fig-:1-

Witnesses:

N. Pneus, Pmwmhnmphnr, wnhhgmn, mc.

passing around parallel with the edge of the seat, the other part joining the back about UNITED STATES PATENT OFFICE.'

cHAHLEs E. DAvis, OE COLUMBUS, OHIO.

TILTlNe-CHAIR.

SPECIFIATION forming part of Letters Patent No. 357,183, dated February 8, 1887.

` Application filed July 15, 1886. ASerial No. 208,160. (No model.)

.Toall whom it may concern.'

Be it'known that I, CHARLES E. DAvis, a citizen of the United States, residing at Columbus, in the county of FranklinY and State of,

ing only a rotary motion, and not to chairs. having a tilting seat, as in tilting-chairs.

The object of my invention is to provide a chair having a back so arranged in connection with a spring that it conforms to different positions when it is occupied by a person sitting in the chair and leaning backward,thereby forming a back-rest. I attain this Object by the mechanismillustrated in the accompany? ing drawings, in which- Figure l representsasideUeft) view of chair, dotted lines representing chair in position when occupied, with the back pressed backward. Fig. 2 represents the bottom of the chair as viewed from underneath. Fig. 3 rep! resents the chair as yiewed from the front, showing lifting-lever.

l Si milarletters refer to similar parts through-V out the different views.

A is a stationary seat; B, anarm, one part halfway up from they seat, both parts being fastened to the back, both arm and back working on a pivot at the side of the seat, which passes through the lower part of the arm and directly into the side edge of the seat; L, `a

cross-piece secured to the under side of the arms and rests on the spring F.

C is a plate secured to the seat, in which the screw D is fastened with a set-screw, c. The spring F rests upon and is sustained by one arm ofa lever, E,.which lever is supported by a pivotal bearing, N, the other arm of which 1S supported and held by the regulating-lever G.

M represents bearings for the regulating lever G. To one arm of lever G is secured a rod, H, which extends through a lng, `O, at the side of the seat. One end of this rod is provided with a screw-thread and nut, which sets'in an angular depression in one arm of the lever G, to prevent it from turning, and the opposite end is secured by means of a knob rigidly attached thereto and bearing against the outer face of the lug O.V` By turning the V knob H to the right or left the thread upon the end of the rod operates within the nut O and varies the tension of the spring for the purpose of increasing and diminishing the resistance to the back I.

I do not herein claim to bel the inventor,

broadly, of achair having a stationary seat in i seat, a back with arms pivoted thereto, said back resting on and supported by acoil-spring, which is in turn supported by one arm of a lever, having pivotal bearings secured to the seat portion ofthe chair, the other arm=of said llever being attached to mechanism for regulating thetension of the spring, substantially as described.

oHARLEs DAvis.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6929327 *Mar 3, 2004Aug 16, 2005Pro-Cord SpaChair with oscillating seat
US7249801Feb 24, 2004Jul 31, 2007Erreti Snc Di Rinaldo Tonin & C.Cushioning device to cushion the backrest of a chair, an armchair, an office chair or similar
WO2004075691A2 *Feb 24, 2004Sep 10, 2004Erreti Snc Di Rinaldo Tonin &Cushioning device to cushion the backrest of a chair, an armchair, an office chair or similar
Classifications
Cooperative ClassificationA47C7/443