US2009918A - Adjustable chair - Google Patents

Adjustable chair Download PDF

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Publication number
US2009918A
US2009918A US751900A US75190034A US2009918A US 2009918 A US2009918 A US 2009918A US 751900 A US751900 A US 751900A US 75190034 A US75190034 A US 75190034A US 2009918 A US2009918 A US 2009918A
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United States
Prior art keywords
uprights
cross bars
seat
upper ends
chair
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
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US751900A
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English (en)
Inventor
Grassi Marcel Henri
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Individual
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Individual
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Publication date
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Publication of US2009918A publication Critical patent/US2009918A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
    • A47D1/00—Children's chairs
    • A47D1/002—Children's chairs adjustable
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/006—Chair or stool bases with castors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
    • A47D1/00—Children's chairs
    • A47D1/002—Children's chairs adjustable
    • A47D1/004—Children's chairs adjustable in height

Definitions

  • the present invention has for its primary object to provide an adjustable chair utilizable particularly by children, the construction of this chair being such as to permit selective adjustment of its component parts so as to suit the increasing size of a child as he grows, so that the chair can kbe yused without structural modications for a period of about ten years or more or in different places where the child must sit down at different levels above the ground.
  • a further object of the invention is to provide an adjustable chair whose component parts may be folded up or collapsed into a small volume when in inoperative position or may be alternatively held with the required stability when in operative position.
  • Still a further object of the invention is to provide an adjustable chair wherein the seat has locking means which preclude any undue collapse of the latter when 'in operative position while being instantaneously disengageable for permitting the chair to be folded up into its collapsed position of rest.
  • a still further object of the invention is to provide an adjustable chair wherein the seat is so hingedly connected to pivoted members jointedly connected to the chair uprights that when said uprights and members are brought together or extended the seat can follow the folding or extending motions thus imparted to them so as to assume various adjusted positions in height responsive to the relative positions occupied by said uprights and members.
  • Still another object of the invention is to provide a new or improved adjustable chair made up of a minimum number of light and simple parts and capable of being manufactured and assembled at a minimum cost as regards raw materials and labor.
  • the invention comprises the novel construction, combination and arrangement of parts that will now be described with reference to the accompanying diagrammatic drawing forming a part of the present disclosure and showing by way of example a suit-v able embodiment of the invention.
  • each pair of cross bars or battens X pivotally connected to each other at A is pivotally connected to the spaced uprights M1, M2 at its lower ends by pins B and C.
  • the upper ends of the cross bars X are pivotally connected to the uprights by pins F, K slidably guided in slots or mortises D, E formed in the uprights respectively.
  • Teeth, notches, recesses or 1 a rack G are provided on thebackportion of the seat S, advantageously on its lower face as shown. Any one of the notches or hollows of the toothed portion or rack ⁇ G may be selectively brought into registration and into removable engagement with the pins K, should the latter project inwardly of the uprights to a suillcient extent, or with a cross rod bridging and connecting the back upperends of the cross bars X. AsA such a connecting cross rod corresponds in position with the pins K, it is not designated by a separate reference letter in the drawing.
  • the height of the seat S with respect to the bottom ends of the uprights M1, M2 may be adjusted very easily to suit the size 25 of the child, whereafter the selected position of adjustment maybe preserved.
  • the seat S and cross bars X form an articulated unit pivotally connected to the uprights forming the frame of the chair and adjustable height 30 wise by moving said uprights towards or away from one another after having unlocked the seat S from the pins K or from the aforesaid cross rod 1K.
  • the foot rest N is a separate fitting which, in 36 the embodiment illustrated, has parallel cranked arms O provided with pins P which may be se lectively engaged into notches or recesses H formed in the fore uprights M2. These notches o1' recesses may be perpendicular or oblique to the 40 longitudinal geometrical axes of said uprights, and they may be constituted, if found more c'onvenient, by the hollow spaces between the teeth of racks fixed to the uprights in any suitable way.
  • the foot rest N may be adjusted at will to suit the length of the childs legs, due regard being p aid to the'height at which the seat S has been adjusted. l
  • the arm rests Q are connected by pivots L t0 the tops of the fore uprights Mf'of the chair. 50 Slots I formed in the arm rests Q permit a slidable motion oi the pivots U which connect them to the back uprights M1 of the chair. This arrangement permits the arm rests to be folded 11p-along the general plane into which the chair 55 y is collapsed when brought into inoperative position. Clamping knobs J of any hiown'or ap proved construction are provided for locking the pivots U and thus for holding the arm rests Q in their operative position (as shown) or in their inoperative position. lSaidclamping knobs J may be roughened or knurled to facilitate the grip on them of the user.
  • Means are provided for locking the legs V1, 'V'1 in their raised positions (as shown in full lines) or in theirlowered positions (as shown in dotted lines).
  • said means consist, on the one hand, in cleats W1, W1' secured to the uprights adjacent their lower ends and, on the other hand, in notches Y1, Y1 i'ormed in the legs V1, W adjacent their pivotal connections.
  • AThe legs V1, Va may have any convenient shape and may ldiverge downwardly as illustrated for ensuring the required stability of the chair when in lowered positions.
  • a small table such as T may be fitted to the chair and held as represented xedly or removably by'any approved or known device, for instance by pivots or by a slot and pin connection. Such a connection is not shown as it forms no part of vthe invention.
  • the adjustable chair as above described may be made mostly of wood, metal or any other suitable material. It can be used either in residential or in commercial premises, for instance in hairdressers salons for permitting the hair of a child to be more easily cut since his seated body can be raised above the floor to the most suitable height for the hair dressing operation. Other ilelds ot utilization of this adjustable chair are obvious.
  • An adjustable chair comprising two pairs oi spaced uprights, two pairs of pivoted cross bars pivotally connected at their upper and lower ends to said respective uprights, means on the uprights allowing sliding motion or the pivots connecting the uprights to the upper ends of the cross bars,-
  • An adjustable chair comprising two pairs of spaced uprights, two pairs oi' pivoted cross bars pivotally connected at their 4upper and lower ends to said respective uprights. slots in the uprights for allowing motion of the pivots at the upper ends heightwise by moving the latter towards or away from one another.
  • An adjustable chair comprising two pairs oi' spaced uprights, two pairs of pivoted cross bars pivotally connected at their upper and lower ends to said respective uprights, means on the uprights allowing motion of the pivots vat the upper ends of the cross bars along the uprights, a seat yhingedly carried by the fore upper ends of the cross bars, a cross rod bridging the back upper ends or the cross bars, and arow of notches on the seat engageable selectively with said cross rod, the seat and cross bars forming an articulated unit pivoted to the uprights' and adjustable heightwlse by moving the latter towards or away from oneanother.
  • An adjustable chair comprising two pairs of spaced uprights, two pairs of pivoted cross bars pivotally connected at their upper and lower ends to said respective uprights, slots in the uprights for allowing a sliding motion of the pivots at the upper ends f the cross bars along the uprights, a seat hingedly carried by the fore upper ends of the cross bars, a cross rod bridging the back upper ends of the cross bars, and a row of indentations on the lower face of the seat, said indentations being engageable selectively with said cross rod, the seat and cross bars forming an articulated unit pivoted to the uprights and adjustable heightwise by moving the latter towards or away from one another.
  • An adjustable chair comprising vtwo pairs of spaced uprights, two pairs oi pivoted cross bars hinged at their upper and lower ends to said respective uprights, means on the uprights allowing al sliding'motion oi' the pivots at the upper ends oi' the cross bars along the uprights, notches in the fore uprights, a foot rest having projections engageable with said notches, a seat hingedly carried by the fore upper ends of the cross bars, abutment means on the back upperv 'pivoted to the uprights and adjustable heightwise bymoving the latter towards or away from l one another when the abutment means and locking means are disengaged from one another.
  • An adjustable chair comprising two pairs o! spaced uprights, two pairs of pivoted cross bars hinged at their upper and lower ends to said respective uprights, means on the uprights allowing a sliding motion of the pivots at the upper ends of the cross bars along the uprights, slotted arm rests spanning the uprights and hinged thereto, one of the hinges of each arm rest being slidable through its slot, a seat hingedly carried by the tore upper ends of the cross bars, abutment means on the back upper ends oi' the cross bars, and locking means on the seat engageable with spaced uprights, two pairs oi pivoted cross bars 7 hinged at their upper and lower ends to said respective uprights, slots in the uprights for allowing a sliding motion of the pivots at the upper ends of the cross bars along the uprights, slotted arm rests spanning the uprights and pivoted thereto, one of the pivots of each arm rest being slidable through its slot, a clamping knob for said last--4 named pivot,
  • An adjustable chair comprising two pairs of spaced uprights, two pairs of pivoted cross bars pivotally connected at their upper and lower ends to said uprights, slots in the uprights allowing motion of the pivots at the upper ends of the cross bars along the uprights, supporting legs tted at the lower ends of the uprights, a seat hingedly carried by the fore upper ends of the cross bars, abutment means on the back upper ends of the cross bars, and locking means on the seat engageable with said abutment means, the seat and cross bars forming an articulated unit pivoted to the uprights and adjustable heightwise responsive to a' motion of the uprights towards or away from one another after disengagement of the abutment means from the locking means.
  • An adjustable chair comprising two pairs of spaced uprights, two pairs of pivoted cross bars hinged at their upper and lower ends to said uprights, slots in the uprights allowing motion of the pivots located at the upper ends of the cross bars along the uprights, supporting legs fitted with rollers and pivotally connected to the lower ends of the uprights, means for holding said legs in raised and lowered positions respectively, a seat hingedly carried by the fore upper ends of the cross bars, an abutment cross rod spanning the back upper ends of the cross bars, and a row of indentations on the lower face of the seat, said indentations being engageable selectively with said cross rod, the seat and cross bars forming an articulated unit pivoted to the uprights and ad ⁇ justable heightwise responsive to a motion of the uprights towards or away from-one another after disengagement of the cross ⁇ rod from the selected indentation.

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  • Special Chairs (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US751900A 1933-11-22 1934-11-07 Adjustable chair Expired - Lifetime US2009918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR764134T 1933-11-22

Publications (1)

Publication Number Publication Date
US2009918A true US2009918A (en) 1935-07-30

Family

ID=9181971

Family Applications (1)

Application Number Title Priority Date Filing Date
US751900A Expired - Lifetime US2009918A (en) 1933-11-22 1934-11-07 Adjustable chair

Country Status (3)

Country Link
US (1) US2009918A (de)
DE (1) DE634778C (de)
FR (2) FR764134A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775285A (en) * 1953-07-10 1956-12-25 Clifford D Moreland Convertible chair
US3471875A (en) * 1968-02-29 1969-10-14 Clifford R Lyon Portable fishing float
US4927105A (en) * 1989-01-12 1990-05-22 Habermann Patrick R Convertible leg/roller structure
US5584529A (en) * 1995-07-06 1996-12-17 Cheng; Chin-Chang Folding chair
US20030030305A1 (en) * 2001-08-10 2003-02-13 Harrison Choi Hard arm chair with sliding arm mechanisms
US20080179921A1 (en) * 2006-11-17 2008-07-31 Ilinko Ltd. Collapsible highchair
US20090289478A1 (en) * 2008-05-20 2009-11-26 Robert Piserchio Convertible, multi-purpose children's chair
US7753441B1 (en) * 2007-03-19 2010-07-13 Gray Jr Oscar Fisherman's chair and associated method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4896310B2 (ja) 2001-07-16 2012-03-14 コンビ株式会社 幼児用椅子

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775285A (en) * 1953-07-10 1956-12-25 Clifford D Moreland Convertible chair
US3471875A (en) * 1968-02-29 1969-10-14 Clifford R Lyon Portable fishing float
US4927105A (en) * 1989-01-12 1990-05-22 Habermann Patrick R Convertible leg/roller structure
US5584529A (en) * 1995-07-06 1996-12-17 Cheng; Chin-Chang Folding chair
US20030030305A1 (en) * 2001-08-10 2003-02-13 Harrison Choi Hard arm chair with sliding arm mechanisms
US7066534B2 (en) * 2001-08-10 2006-06-27 North Pole Limited Hard arm chair with sliding arm mechanisms
US20080179921A1 (en) * 2006-11-17 2008-07-31 Ilinko Ltd. Collapsible highchair
US7753441B1 (en) * 2007-03-19 2010-07-13 Gray Jr Oscar Fisherman's chair and associated method
US20090289478A1 (en) * 2008-05-20 2009-11-26 Robert Piserchio Convertible, multi-purpose children's chair

Also Published As

Publication number Publication date
DE634778C (de) 1936-09-03
FR764134A (fr) 1934-05-15
FR45552E (fr) 1935-10-17

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