US1836630A - Chair - Google Patents
Chair Download PDFInfo
- Publication number
- US1836630A US1836630A US293180A US29318028A US1836630A US 1836630 A US1836630 A US 1836630A US 293180 A US293180 A US 293180A US 29318028 A US29318028 A US 29318028A US 1836630 A US1836630 A US 1836630A
- Authority
- US
- United States
- Prior art keywords
- chair
- section
- seat
- seat portion
- frame
- 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
Links
- 210000001624 hip Anatomy 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 210000002414 leg Anatomy 0.000 description 3
- 238000009408 flooring Methods 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
Images
Classifications
-
- 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
- A47C7/02—Seat parts
- A47C7/024—Seat parts with double seats
-
- 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—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/441—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with adjustable elasticity
-
- 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—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/443—Support 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
- the present invention relates to chairs and an object thereof is toprovide a chair which will permit the body of a person seated thereon to swing at the hips to different positions without shifting the positions of the legs between the hip joints and the knees and without shifting the knee joints with reference to the floor or surface on which the chair rests.
- Fig. 1 is a side view of a chair constructed in accordance with this invention, parts being in section and the chair being shown with the back slightly tilted to the rear;
- Fig. 2 is a bottom view of the seat with parts broken away;
- Fig. 3 is a vertical fragmentary section through the chair showing the back thereof in normal position
- Fig. 4 is an enlarged section through the chair seat on the line 44, Fig. 5;
- Fig. 5 is a section on the line 5-5, Fig. 4.
- a lower base portion 1 in which a screw spindle 2 of any suitablev form may turn.
- This spindle 2 has at its upper end a head 3 which is rigidly secured to i the spindle and which is provided with two forwardly projecting arms 5 bolted or riveted at 6 rigidly to the head 3 and forming a frame or support for a forward seat portion 7 which is secured by screws 8 to said forwardly projecting arms 5.
- a frame 10 Pivoted at 9 to the forward supporting frame is a frame 10 which forms a support for a rear seat portion 11, the rear seat portion being secured by screws 12 to the upper face of said frame 10.
- a guide ear 13 which surrounds the guide bolt 14, the inner end of which ex- 1928; Serial No. 293,180.
- a helical spring 18 surrounds this guide bolt and one end abuts a washer 19 while the other end abuts a washer 20.
- the washer 19 abuts the ear 13 whereas the washer 20 abuts the nut .17. It is to be seen that this spring 18 normally holds the rear seat portion 10 in a horizontal plane with the front seat portion 7 but permits the rear seat portion 10 to swing downwardly about'the pivots 9 as an axis.
- the rear seat portion 10 may have a back 21 projecting upwardly to the rear edge thereof while arms 22 may connect this back with the forward portion of the rear seat portion 11.
- a chair constructed in accordance with this invention permits the user to swing rearwardly about the hips as a pivot without shifting the leg portions between the hips and the knee joint.
- the front seat portion 7 has a substantially fixed position with reference to the-flooring upon which the chair rests, the knee joints do not shift and the feet may be maintained on thefioor notwithstanding the. position on the back of the chair.
- This chair automatically adapts itself to the position of the back of the user without any movement ofthe legs, thus permitting the feet to main tain a uniform position on the fioorfor any back adjustment.
- a chair comprising a base, a screw spindle adjustable on the base, a frame secured to the upper end of the screw spindle, a forward seat portion held against movement on said frame, a rear seat portion pivotally connected to said frame, a resilient means opposing the movement of the rear seat portion.
- a chair comprising a base, a screw spindle adjustable on the base, a frame mounted at the upper end of said screw spindle, a forward seat portion held against movement on said frame, a rear seat portion pivotally connected with the frame, a guide bolt projecting from said frame, an ear on the rear seat portion movable on said guide bolt, and a spring surrounding said guide bolt and opposing the movement of' the pivotally mounted rear seat portion.
- a chair embodying a base, a single seat supported by said base and having a forward rigid section and a swinging rear section, and means situated at the adjacent edges of the two sections to hold them in seat forming position and permitting a limited downwardly swinging movement of the rear seat section under pressure.
- a chair comprising a base, a seat formed of two sections one in back of the other, means supporting the front section against downward movement on the base, means supporting the back seat member to swing downwardly at its rear edge relatively to front seatmember, a back projecting upwardly from the rear portion of the back seat section, and resilient means resisting the downward movement of the back seat section.
- a chair comprising a base, a single, seat formed of two sections, one in front of the other, a back projecting upwardly from the rear section, means rigidly supporting the front section on the base, means pivotally supporting the rear section on the base to swing downwardly from a normal'position, and. resilient means opposing the downward and permit it to swing downwardly from a normal position about a horizontal axis adjacent the rear edge of the front section, and a back projecting upwardly from the rear portion of the rear section.
Description
I M. THUM 1,836,630
CHAIR Filed July 16, 1928 2 Sheets-Sheet 1 o -lNVENTOR M ATTORNEY Dec. 15, 1931.
M. THUM 1,836,630 CHAIR Filed July 16, 1928 2 Sheets-Sheet 2 M ATTORNEY Patented Dec. 15, 1931 1 UNITED STATES MARTIN THUM, OF ROCHESTER, NEW YORK CHAIR Application filed July 16,
The present invention relates to chairs and an object thereof is toprovide a chair which will permit the body of a person seated thereon to swing at the hips to different positions without shifting the positions of the legs between the hip joints and the knees and without shifting the knee joints with reference to the floor or surface on which the chair rests.
To this and other ends, the invention consists of certain parts and combinations of parts all of which will be hereinafter described, the novel features being pointed out in the appended claims.
In the drawings;
Fig. 1 is a side view of a chair constructed in accordance with this invention, parts being in section and the chair being shown with the back slightly tilted to the rear;
Fig. 2 is a bottom view of the seat with parts broken away;
Fig. 3 is a vertical fragmentary section through the chair showing the back thereof in normal position;
Fig. 4 is an enlarged section through the chair seat on the line 44, Fig. 5; and
Fig. 5 is a section on the line 5-5, Fig. 4.
In the illustrated embodiment of the invention, there is provided a lower base portion 1 in which a screw spindle 2 of any suitablev form may turn. This spindle 2 has at its upper end a head 3 which is rigidly secured to i the spindle and which is provided with two forwardly projecting arms 5 bolted or riveted at 6 rigidly to the head 3 and forming a frame or support for a forward seat portion 7 which is secured by screws 8 to said forwardly projecting arms 5.
Pivoted at 9 to the forward supporting frame is a frame 10 which forms a support for a rear seat portion 11, the rear seat portion being secured by screws 12 to the upper face of said frame 10. Depending from the frame 10 is a guide ear 13 which surrounds the guide bolt 14, the inner end of which ex- 1928; Serial No. 293,180.
tends throughan ear 175 on the head 3, and the outer end of which is screw threaded at 16 and has a nut 17- adjustablethereon. A helical spring 18 surrounds this guide bolt and one end abuts a washer 19 while the other end abuts a washer 20. The washer 19 abuts the ear 13 whereas the washer 20 abuts the nut .17. It is to be seen that this spring 18 normally holds the rear seat portion 10 in a horizontal plane with the front seat portion 7 but permits the rear seat portion 10 to swing downwardly about'the pivots 9 as an axis. The rear seat portion 10 may have a back 21 projecting upwardly to the rear edge thereof while arms 22 may connect this back with the forward portion of the rear seat portion 11.
A chair constructed in accordance with this invention permits the user to swing rearwardly about the hips as a pivot without shifting the leg portions between the hips and the knee joint. As the front seat portion 7 has a substantially fixed position with reference to the-flooring upon which the chair rests, the knee joints do not shift and the feet may be maintained on thefioor notwithstanding the. position on the back of the chair. This chair automatically adapts itself to the position of the back of the user without any movement ofthe legs, thus permitting the feet to main tain a uniform position on the fioorfor any back adjustment.
What I claim as my invention and desire to secure by Letters Patent is z.
1. A chair embodying aseat for one person formed of two sections, a front section and a rear section, means supporting the front section in "a rigid position, resilient means supporting the rear section in a normal position substantially in'a horizontal planewith the front section so that it will swing downwardly at its rear edge about an axis adjacent the rear edge of the front section, and a back projecting upwardly from the rear part of the rear section.
2. A chair embodying a seat for one person formed on two sections, a front section and a rear section, means supporting the front section in a rigid position, means supporting the rear section so that it will swing downwardly at its rear edge about an axis adjacent the rear edge of the front section, a back projecting upwardly from the rear part of the rear section, and means resiliently resisting the downward movement of the rear section.
3. A chair comprising a base, a screw spindle adjustable on the base, a frame secured to the upper end of the screw spindle, a forward seat portion held against movement on said frame, a rear seat portion pivotally connected to said frame, a resilient means opposing the movement of the rear seat portion.
4c. A chair comprising a base, a screw spindle adjustable on the base, a frame mounted at the upper end of said screw spindle, a forward seat portion held against movement on said frame, a rear seat portion pivotally connected with the frame, a guide bolt projecting from said frame, an ear on the rear seat portion movable on said guide bolt, and a spring surrounding said guide bolt and opposing the movement of' the pivotally mounted rear seat portion.
5. A chair embodying a base, a single seat supported by said base and having a forward rigid section and a swinging rear section, and means situated at the adjacent edges of the two sections to hold them in seat forming position and permitting a limited downwardly swinging movement of the rear seat section under pressure.
6. In a chair, the combination with a seat having two sections, one in front of the other, both sections being normally in the same plane, of a supporting means having a rigid extension, one of said seat sections being rigidly mounted on said extension and the other section being pivotally connected to said extension permitting said latter section to move downwardly from normal position when under pressure.
7. A chair comprising a base, a seat formed of two sections one in back of the other, means supporting the front section against downward movement on the base, means supporting the back seat member to swing downwardly at its rear edge relatively to front seatmember, a back projecting upwardly from the rear portion of the back seat section, and resilient means resisting the downward movement of the back seat section.
8. A chair comprising a base, a single, seat formed of two sections, one in front of the other, a back projecting upwardly from the rear section, means rigidly supporting the front section on the base, means pivotally supporting the rear section on the base to swing downwardly from a normal'position, and. resilient means opposing the downward and permit it to swing downwardly from a normal position about a horizontal axis adjacent the rear edge of the front section, and a back projecting upwardly from the rear portion of the rear section.
MARTIN THUM.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US293180A US1836630A (en) | 1928-07-16 | 1928-07-16 | Chair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US293180A US1836630A (en) | 1928-07-16 | 1928-07-16 | Chair |
Publications (1)
Publication Number | Publication Date |
---|---|
US1836630A true US1836630A (en) | 1931-12-15 |
Family
ID=23128020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US293180A Expired - Lifetime US1836630A (en) | 1928-07-16 | 1928-07-16 | Chair |
Country Status (1)
Country | Link |
---|---|
US (1) | US1836630A (en) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2428087A (en) * | 1943-06-30 | 1947-09-30 | Frederick E Markus | Furniture |
US3368844A (en) * | 1966-10-17 | 1968-02-13 | Doerner Products Co Ltd | Chair control for tilting and swivel chairs having improved tensioning bolt |
US3446532A (en) * | 1967-03-13 | 1969-05-27 | Harold W Cramer | Chair |
US3572829A (en) * | 1968-07-18 | 1971-03-30 | Companie Nationale Air France | Tiltable air plane seat |
US3741607A (en) * | 1970-10-05 | 1973-06-26 | H Cramer | Chair |
FR2426432A1 (en) * | 1978-05-24 | 1979-12-21 | Stoll Gmbh Martin | OFFICE CHAIR |
FR2498908A1 (en) * | 1981-02-04 | 1982-08-06 | Kuhn Kurt | OFFICE CHAIR WITH VARIABLE TILT |
EP0105955A1 (en) * | 1982-10-13 | 1984-04-25 | Martin Stoll GmbH | Chair |
US4521053A (en) * | 1981-06-23 | 1985-06-04 | Gispen+Staalmeubel B.V. | Chair |
US4560199A (en) * | 1983-07-22 | 1985-12-24 | Pamont Ag | Recliner chair |
DE4040139A1 (en) * | 1990-12-15 | 1992-06-17 | Link Wilhelm Kg | Office chair with divided seat - has articulated lever system for controlled adjustment between backrest and seat |
EP0499649A1 (en) * | 1991-01-24 | 1992-08-26 | Rolf Völkle | Chair, in particular for children and adolescents |
US5203606A (en) * | 1990-06-06 | 1993-04-20 | Michele A. Chiarella | Two section-bicycle saddle with movable front section |
US5716099A (en) * | 1996-08-14 | 1998-02-10 | Novimex Fashion Ltd. | Chair with split reclining seat |
US5755490A (en) * | 1994-08-12 | 1998-05-26 | Steelcase Strafor | Office chair structure |
US5871258A (en) * | 1997-10-24 | 1999-02-16 | Steelcase Inc. | Chair with novel seat construction |
US5913568A (en) * | 1997-09-30 | 1999-06-22 | Brightbill; Stephen T. | Two platform motion seat |
WO2000015080A1 (en) * | 1998-09-10 | 2000-03-23 | Jonber, Inc. | Chair |
WO2001076420A1 (en) * | 2000-04-05 | 2001-10-18 | Lindgreen, Annette | A chair |
US6499802B2 (en) * | 2000-05-16 | 2002-12-31 | Art Design International Inc. | Articulated seat |
WO2006114311A1 (en) * | 2005-04-28 | 2006-11-02 | Bock 1 Gmbh & Co. Kg | Seating, especially office chair |
EP2127942A2 (en) * | 2001-01-18 | 2009-12-02 | Eduard Lanz | Seat, especially for a vehicle |
EP2179681A1 (en) * | 2008-10-03 | 2010-04-28 | Maarten Antoon Nicolaas Den Hartog | Work chair with foreward tiltable seating part and support for upper body |
US20120025578A1 (en) * | 2010-01-28 | 2012-02-02 | Sava Cvek | Pivoting Mechanism with Gross and Fine Resistance Adjustment |
US20120032484A1 (en) * | 2010-02-08 | 2012-02-09 | Sava Cvek | Mobile Task Chair and Mobile Task Chair Control Mechanism with Adjustment Capabilities and Visual Setting Indicators |
US20150182027A1 (en) * | 2013-12-27 | 2015-07-02 | Hong-Yuan Chang | Composite chair |
US11071386B2 (en) | 2016-06-09 | 2021-07-27 | Sava Cvek | Seat pivoting mechanism and chair height locking system |
US20230210264A1 (en) * | 2020-02-21 | 2023-07-06 | Aeteron Gmbh | Chair |
-
1928
- 1928-07-16 US US293180A patent/US1836630A/en not_active Expired - Lifetime
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2428087A (en) * | 1943-06-30 | 1947-09-30 | Frederick E Markus | Furniture |
US3368844A (en) * | 1966-10-17 | 1968-02-13 | Doerner Products Co Ltd | Chair control for tilting and swivel chairs having improved tensioning bolt |
US3446532A (en) * | 1967-03-13 | 1969-05-27 | Harold W Cramer | Chair |
US3572829A (en) * | 1968-07-18 | 1971-03-30 | Companie Nationale Air France | Tiltable air plane seat |
US3741607A (en) * | 1970-10-05 | 1973-06-26 | H Cramer | Chair |
FR2426432A1 (en) * | 1978-05-24 | 1979-12-21 | Stoll Gmbh Martin | OFFICE CHAIR |
FR2498908A1 (en) * | 1981-02-04 | 1982-08-06 | Kuhn Kurt | OFFICE CHAIR WITH VARIABLE TILT |
US4521053A (en) * | 1981-06-23 | 1985-06-04 | Gispen+Staalmeubel B.V. | Chair |
EP0105955A1 (en) * | 1982-10-13 | 1984-04-25 | Martin Stoll GmbH | Chair |
US4560199A (en) * | 1983-07-22 | 1985-12-24 | Pamont Ag | Recliner chair |
US5203606A (en) * | 1990-06-06 | 1993-04-20 | Michele A. Chiarella | Two section-bicycle saddle with movable front section |
DE4040139A1 (en) * | 1990-12-15 | 1992-06-17 | Link Wilhelm Kg | Office chair with divided seat - has articulated lever system for controlled adjustment between backrest and seat |
EP0499649A1 (en) * | 1991-01-24 | 1992-08-26 | Rolf Völkle | Chair, in particular for children and adolescents |
US5755490A (en) * | 1994-08-12 | 1998-05-26 | Steelcase Strafor | Office chair structure |
US5716099A (en) * | 1996-08-14 | 1998-02-10 | Novimex Fashion Ltd. | Chair with split reclining seat |
US5913568A (en) * | 1997-09-30 | 1999-06-22 | Brightbill; Stephen T. | Two platform motion seat |
US6340207B1 (en) | 1997-09-30 | 2002-01-22 | Dual Seat Technologies | Two platform motion seat |
US6357827B1 (en) | 1997-09-30 | 2002-03-19 | Dual Seat Technologies, Inc. | Two platform motion seat |
US5871258A (en) * | 1997-10-24 | 1999-02-16 | Steelcase Inc. | Chair with novel seat construction |
US6394548B1 (en) | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Seating unit with novel seat construction |
US6193313B1 (en) * | 1998-09-10 | 2001-02-27 | Jonber, Inc. | Chair |
WO2000015080A1 (en) * | 1998-09-10 | 2000-03-23 | Jonber, Inc. | Chair |
WO2001076420A1 (en) * | 2000-04-05 | 2001-10-18 | Lindgreen, Annette | A chair |
US6499802B2 (en) * | 2000-05-16 | 2002-12-31 | Art Design International Inc. | Articulated seat |
EP2127942A2 (en) * | 2001-01-18 | 2009-12-02 | Eduard Lanz | Seat, especially for a vehicle |
WO2006114311A1 (en) * | 2005-04-28 | 2006-11-02 | Bock 1 Gmbh & Co. Kg | Seating, especially office chair |
US20080100119A1 (en) * | 2005-04-28 | 2008-05-01 | Bock 1 Gmbh & Co. Kg | Seating Furniture, In Particular Office Chairs |
EP2179681A1 (en) * | 2008-10-03 | 2010-04-28 | Maarten Antoon Nicolaas Den Hartog | Work chair with foreward tiltable seating part and support for upper body |
US9625015B2 (en) | 2010-01-28 | 2017-04-18 | Sava Cvek | Pivoting mechanism with gross and fine resistance adjustment |
US20120025578A1 (en) * | 2010-01-28 | 2012-02-02 | Sava Cvek | Pivoting Mechanism with Gross and Fine Resistance Adjustment |
US8714645B2 (en) * | 2010-01-28 | 2014-05-06 | Sava Cvek | Pivoting mechanism with gross and fine resistance adjustment |
US20120032484A1 (en) * | 2010-02-08 | 2012-02-09 | Sava Cvek | Mobile Task Chair and Mobile Task Chair Control Mechanism with Adjustment Capabilities and Visual Setting Indicators |
US9622581B2 (en) | 2010-02-08 | 2017-04-18 | Sava Cvek | Mobile task chair and mobile task chair control mechanism with adjustment capabilities and visual setting indicators |
US8714646B2 (en) * | 2010-02-08 | 2014-05-06 | Sava Cvek | Mobile task chair and mobile task chair control mechanism with adjustment capabilities and visual setting indicators |
US20150182027A1 (en) * | 2013-12-27 | 2015-07-02 | Hong-Yuan Chang | Composite chair |
US11071386B2 (en) | 2016-06-09 | 2021-07-27 | Sava Cvek | Seat pivoting mechanism and chair height locking system |
US20230210264A1 (en) * | 2020-02-21 | 2023-07-06 | Aeteron Gmbh | Chair |
US11844440B2 (en) * | 2020-02-21 | 2023-12-19 | Aeteron Gmbh | Chair |
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