US1777204A - Adjustable spring-mounted chair - Google Patents

Adjustable spring-mounted chair Download PDF

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Publication number
US1777204A
US1777204A US345066A US34506629A US1777204A US 1777204 A US1777204 A US 1777204A US 345066 A US345066 A US 345066A US 34506629 A US34506629 A US 34506629A US 1777204 A US1777204 A US 1777204A
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US
United States
Prior art keywords
chair
rod
spring
seat
adjustable spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US345066A
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English (en)
Inventor
Korsten Albertus Coenrades
Visser Machiel De
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1777204A publication Critical patent/US1777204A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/24—Chairs or stools with vertically-adjustable seats with vertical spindle
    • A47C3/245—Chairs or stools with vertically-adjustable seats with vertical spindle resiliently supported

Definitions

  • the invention relates to an adjustable, spring-mounted chair, e. g. an oflice-chair, the seat of which being revolving, adpistable in various heights and at the same tune spring-mounted.
  • the chair according to the invention is arranged so that two springs are mounted 1n order to support the seat resiliently, which springs are put into action 1n succession, while one of them serves at the same time as a screw-worm for the height-adjustment of the chair, under the application of a clutch, mounted between said spring and the spindle of the seat, which clutch in released condition enables the seat to turn, without altering the height-adjustment of the chair.
  • the drawing illustrates by way of example the under-frame of the chair according to the invention, partly in section.
  • the construction is entirely made up of metal, in consequence of which the chair may be made in mass.
  • the underframe of the chair according to the invention comprises a number, e. g. three legs 1 of tube metal, interconnected by e. g. two supporting yokes 2, 3, likewise made of tube metal.
  • the seat of the chair (which has not been drawn) is arranged on a rod 4 having a reduced end 5.
  • abutment 6 supporting the coiled spring 7 arranged round the end- 5 of the rod, which coiled spring rests with its lower side on a bottom 8 of a bush 9, enclosing the rod 5 and the spring 7.
  • the said bush 9 rests normally with its upper part against a ring 10 of the yoke 2, through which ring the rod 4 passes.
  • the lower end of the bush 9 is mounted freely movably in an opening 11 of a ring 12 of the lower yoke 3. In some places near the upper edge of the bush 9, this bush is incised vertically so that in'those places a lip 13 is formed, which is bent outwardly and there upon somewhat shortened in case of need.
  • the lipsl3 are arranged so that they are discavity 18 in which a pin 19 may'rest which pin is inserted fittingly in an opening of the rod5.
  • the device according to .the invention works as follows: i i
  • the seat is revolved in the same man neras a music stool, without taking seat on] the chair.
  • the rod 4 revolves and the pin 19 of the end 5 laying in the cavity 18, takesalong with it the bottom portion 8-and at the same time the bush 9. Consequently the cams 13 between the convolution of the spring 14, which in that case acta s screw-worms,arescrewed downward so that the seat of thechair, together with the membersconnected-to it, sinks, since the bush 9 is adapted to sink freelythrough the opening 11 of the ring 12.
  • V A further advantage of this construction is that the Chair is calculated for the most varying weights of the persons using the chair.
  • a supple springing chair is constructed vina simple way, which chair is suitedifo; every weight and the seatof which may be revolved in all directions without altering anyhow the height-adjustment o6 thkawchair.
  • the invention is cheap and easily to be made in mass, whereas its duration of life is very long.
  • a device. of the class. described com: prising upper and lower rings,. arseatsu r eccording to porting. rodslidably associated with t e rings and having an abutment, abushing surrounding the rod end-having a bottom slidably receiving the-c rod a, coiled spring surrounding. the bushing, a lip carriedby:
  • a device of the class described. comprising upper 'and lower I rings, a seat supporting rod slidably and rotatably; associ- Med with ,the rings, ,a bushing surrounding sprin encirclingt-he bushing, means for interloc ing the spring andthe lower. ring: at

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Springs (AREA)
US345066A 1928-03-17 1929-03-07 Adjustable spring-mounted chair Expired - Lifetime US1777204A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL40499A NL21572C (enrdf_load_stackoverflow) 1928-03-17 1928-03-17
BE360049T 1929-04-23
FR674068T 1929-04-26

Publications (1)

Publication Number Publication Date
US1777204A true US1777204A (en) 1930-09-30

Family

ID=42813437

Family Applications (1)

Application Number Title Priority Date Filing Date
US345066A Expired - Lifetime US1777204A (en) 1928-03-17 1929-03-07 Adjustable spring-mounted chair

Country Status (4)

Country Link
US (1) US1777204A (enrdf_load_stackoverflow)
BE (1) BE360049A (enrdf_load_stackoverflow)
FR (1) FR674068A (enrdf_load_stackoverflow)
NL (1) NL21572C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702075A (en) * 1953-06-19 1955-02-15 Gen Fireproofing Co Swivel chair releasable height adjusting means
US3534937A (en) * 1967-08-17 1970-10-20 Wilkhahn Wilkening & Hahne Swivel chair
US4494721A (en) * 1983-02-03 1985-01-22 Kimball International, Inc. Seat adjustment mechanism for a chair
US20100268079A1 (en) * 2009-04-15 2010-10-21 Kyeong Gu Woo Height Adjustment Device for Imaging Apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702075A (en) * 1953-06-19 1955-02-15 Gen Fireproofing Co Swivel chair releasable height adjusting means
US3534937A (en) * 1967-08-17 1970-10-20 Wilkhahn Wilkening & Hahne Swivel chair
US4494721A (en) * 1983-02-03 1985-01-22 Kimball International, Inc. Seat adjustment mechanism for a chair
US20100268079A1 (en) * 2009-04-15 2010-10-21 Kyeong Gu Woo Height Adjustment Device for Imaging Apparatus
US8631747B2 (en) * 2009-04-15 2014-01-21 Samsung Medison Co., Ltd. Height adjustment device for imaging apparatus

Also Published As

Publication number Publication date
FR674068A (fr) 1930-01-23
BE360049A (enrdf_load_stackoverflow) 1929-05-31
NL21572C (enrdf_load_stackoverflow) 1930-04-15

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