US171664A - Improvement in chairs - Google Patents

Improvement in chairs Download PDF

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Publication number
US171664A
US171664A US171664DA US171664A US 171664 A US171664 A US 171664A US 171664D A US171664D A US 171664DA US 171664 A US171664 A US 171664A
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chairs
improvement
shaft
grems
fowle
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/235—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms
    • B60N2/2352—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms with external pawls
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion

Definitions

  • the invention consists of a back-piece independent of the ordinary back, and located above it, and connected by bars to the front of the ordinary arms, so as to swing up and down, and having ratchet-braces extending from the back down through an eye-piece attached to the bottom of the chair, and having a lever-pawl to hold the back at any height, all making a simple and easily-adjustable seat-back, which may be used with or without the ordinary back.
  • Figure 1 is a sectional elevation of our improved chair, taken on line m a: of Fig. 2;
  • Fig. 2 is a plan with a part of the bottom broken out.
  • A is the adjustable back, which is located over the top of the ordinary back B, and connected by bars 0 with the arms D near the front, so as to swing freely up and down, and having the ratchet-braces E extending down from it through holes in a plate, F, attached to the under side of the seat-bottom, and havinga shaft, G, on which is a pawl or dog, H, for each brace, and a lever, l, for swinging the pawls out of the notches when the back is to be lowered.
  • the lever projects forward from the-shaft, so as to be readily reached from the front when it is desired to adjust the back.
  • the shaft on which the pawls are is fixed in bearings in the plate, so as to turn sufficiently to work the pawls, and the shaft affords a firm rest for the ratchet-braces.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

G. GREMS & L. I. FOWLE.
CHAIR,
Patented J'an.4, 1876.
' ATTORNEYS.
MPETERS, PHDTO-LITNQGRAPHER, WkSHINGTON D C- UNITED STATES PATENT ()FFIGE.
GEORGE GREMS AND LEONARD I. FOWLE, OF FREDERICKSBURG, IOWA.
IMPROVEMENT IN CHAIRS.
Specification forming part of Letters Patent No. 171,664, dated January 4, 1876; application filed August 21, 1875.
To all whom it may concern:
Be it known that we, GEORGE GREMs and LEONARD I. FowLE, of Fredericksburg, in the county of Chickasaw and State of Iowa, haveinvented a new and Improved Adjustable Seat-Back, of which the following is a specification:
The invention consists of a back-piece independent of the ordinary back, and located above it, and connected by bars to the front of the ordinary arms, so as to swing up and down, and having ratchet-braces extending from the back down through an eye-piece attached to the bottom of the chair, and having a lever-pawl to hold the back at any height, all making a simple and easily-adjustable seat-back, which may be used with or without the ordinary back.
Figure 1 is a sectional elevation of our improved chair, taken on line m a: of Fig. 2; and
Fig. 2 is a plan with a part of the bottom broken out.
Similar letters of .reference indicate corresponding parts.
A is the adjustable back, which is located over the top of the ordinary back B, and connected by bars 0 with the arms D near the front, so as to swing freely up and down, and having the ratchet-braces E extending down from it through holes in a plate, F, attached to the under side of the seat-bottom, and havinga shaft, G, on which is a pawl or dog, H, for each brace, and a lever, l, for swinging the pawls out of the notches when the back is to be lowered. The lever projects forward from the-shaft, so as to be readily reached from the front when it is desired to adjust the back. The shaft on which the pawls are is fixed in bearings in the plate, so as to turn sufficiently to work the pawls, and the shaft affords a firm rest for the ratchet-braces.
Having thus described our invention, we
claim as new and desire to secure by Letters Patent- The combination of adjustable back A, bars G, ratchet-bars E, shaft G, pawls H, and the lever I with a chair or other seat, substantially as specified.
GEORGE GREMS.
LEONARD I. FOWLE.
Witnesses:
J. H. MILLER, PETER CASE.
US171664D Improvement in chairs Expired - Lifetime US171664A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630855A (en) * 1952-04-26 1953-03-10 Leo C Malco Contour chair with hingedly mounted back pad
US4848838A (en) * 1988-08-18 1989-07-18 Pelton & Crane Company Curved articulating headrest support bar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630855A (en) * 1952-04-26 1953-03-10 Leo C Malco Contour chair with hingedly mounted back pad
US4848838A (en) * 1988-08-18 1989-07-18 Pelton & Crane Company Curved articulating headrest support bar

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