US181007A - Improvement in tilting chairs - Google Patents

Improvement in tilting chairs Download PDF

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US181007A
US181007A US181007DA US181007A US 181007 A US181007 A US 181007A US 181007D A US181007D A US 181007DA US 181007 A US181007 A US 181007A
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seat
chair
improvement
bar
spring
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs

Definitions

  • My invention has for its object the arrangement of a chair with va spring under the seat, so as when the seat is tipped back it will bring it forward again.
  • lt is a device designed as an office-chair, with a screw under the center of same, so that by turning the seat it will be raised or lowered so as to suit the person sitting in it ;V 'and the person may tip the seat back till the stop ou the seat will strike a corresponding stop on the cross-bar, and the spring will bring the seat back to a level position.
  • Figure 1 is a side view ot my invention
  • Fig. 2 a viewofthe bottom ot' the seat
  • Fig. 3 a view of the stopon the chair and end of the cross-bar
  • Fig. 4 a sectional view, showing the spring and its connections.'l
  • A is the seat ⁇ of the chair; B, the legs of' saine; C, a screw with cross-bar D attached to head of same, and screwing into a vblock tted into the center of legs B; E, a spring,

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  • Special Chairs (AREA)
  • Percussion Or Vibration Massage (AREA)

Description

Patented Aug.15,1876.
UNITED STATES PATENT OFFICE.
HARRY PARRY, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO EMPIRE CHAIR MANUFACTURING COMPANY, OF SAME PLACE.
IMPROVEMENT IN 'TILTING CHAIRS.
Specification forming part of Letters Patent No. l S [.007., dated August 15, 1876; application filed June 12, 1876.
To all whom. it may concern:
Be it known that'I, HARRY PARRY, ot Milwaukee, in theA county of Milwaukee, in the State of Wisconsin, have invented certain Improvements in Chairs, ot1 which the following is a specification:
My invention has for its object the arrangement of a chair with va spring under the seat, so as when the seat is tipped back it will bring it forward again. lt is a device designed as an office-chair, with a screw under the center of same, so that by turning the seat it will be raised or lowered so as to suit the person sitting in it ;V 'and the person may tip the seat back till the stop ou the seat will strike a corresponding stop on the cross-bar, and the spring will bring the seat back to a level position.
Figure 1 is a side view ot my invention; Fig. 2, a viewofthe bottom ot' the seat; Fig. 3, a view of the stopon the chair and end of the cross-bar; Fig. 4, a sectional view, showing the spring and its connections.'l
A is the seat` of the chair; B, the legs of' saine; C, a screw with cross-bar D attached to head of same, and screwing into a vblock tted into the center of legs B; E, a spring,
which hooks into a hole in ear F in the crossbar D at one end, and at the other end hooking into a bowing lever, G, the other end of lever G resting in a socket, H, ill the center ot'cross-barD; I, block forming the center of legs B; K, a stop on ear-piece L, attached to the bottoni of each side ot' the chair-bottom; M, a stop on each end ot' cross-bar D, which, as tbe top ot' the chair is tipped back, strikes against the stop K, and prevents the top from tipping too far back, or from its tipping over if the spring E should break; N, a bar running from the center of cross-bar D to the front of the seat; O, the cane seat; P, the top of the chair; Q, the front of' seat A, resting 011 the end ot' bar N.
I claim as new and as my invention- 1. The combination of spring E, hooking into ear F, and lever G, having its inner end. resting in socket H, substantially as described.
2. The combination of chair-seat A, crossbar D, ear L, and stops K and M, substantially as described.
HARRY PARRY.
Witnesses:
J. B. SMITH, JOHN C. SPENCER.
US181007D Improvement in tilting chairs Expired - Lifetime US181007A (en)

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