US3197254A - Folding tablet arm chair - Google Patents

Folding tablet arm chair Download PDF

Info

Publication number
US3197254A
US3197254A US26668563A US3197254A US 3197254 A US3197254 A US 3197254A US 26668563 A US26668563 A US 26668563A US 3197254 A US3197254 A US 3197254A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
tablet
member
position
chair
writing
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
Inventor
Severin B Hendrickson
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.)
IRVING TRUST COMPANY ONE WALL ST NEW YORK NY A CORP OF NY
Heywood-Wakefield Co
Original Assignee
Heywood-Wakefield Co
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/62Accessories for chairs
    • A47C7/68Arm-rest tables ; or back-rest tables ; Cup holders
    • A47C7/70Arm-rest tables ; or back-rest tables ; Cup holders of foldable or detachable type

Description

July 27, 1965 s. B. HENDRICKSON 3,197,254

FOLDING TABLET ARM CHAIR Filed March 20, 1963 FIGZ INVENTOR. SEVERIN B. HENDRICKSON T BY 14 I I %MQ Q,WQ%MA ATTORNEYS United States Patent 3,197,254 FULDHJG TABLET ARM CHAIR Severin B. Hendrieirson, Templeton, Mass, assignor to Heywood-Wakefield Qornpany, Gardner, Mass, a corporation of Massachusetts Filed Mar. 20, 1963, er. No. 266,685 1 Claim. (Cl. 297162) This invention relates to chairs of the type used in auditoriurns and classrooms having writing tablets affixed thereto, and more particularly to an improved means of pivotally supporting a writing tablet whereby it may be displaced from a horizontal position extending across a seated persons lap to a remote side storage position when not in use.

in chairs of the type having immovable horizontally disposed writing tablets afiixed thereto, it is usually necessary for the occupant of the chair to slide beneath the writin tablet when seating himself. This in turn necessitates an awkward bending of the body in order to fit between the tablet and the seat. Where the chairs are placed side by side in closely spaced rows as they ften are in auditoriums and classrooms, this procedure becomes increasingly difficult and often results in annoying disturbances to people already seated in nearby chairs. When it subsequently becomes necessary to stand from a seated position in one of said chairs, the above mentioned bending and sliding is again necessitated, often with the same accompanying disturbances and difficulties.

In an effort to avoid the above-mentioned difficulties, attempts have been made in the past to provide chairs with movable writing tablets. However, the means for mounting the tablets for movement to remote positions in order to facilitate seating have not proved entirely satisfactory. This has been due to a combination of factors including a lack of structural rigidity, a failure f the operating mechanisms to withstand constant use without the need of frequent repairs, and the lack of a smooth and efiicient method of displacing the tablet without disturbing persons sea-ted in adjacent chairs.

Consequently, an object of the present invention is to provide an improved means for pivotally mounting a movable writing tablet on a chair.

Another object of the present invention is to provide a means for securing the tablet in a remote side storage when not in use.

A further object of the present invention is to provide a writing tablet having a suitably disposed support member attached thereto and to provide the occupant of the chair with an arm rest when the writing tablet is in the side storage position.

Another object of the present invention is to provide a quick and efficient means of displacing the writing tablet from a position extending orizontally across the occupants lap to a remote side storage position.

Another object of the present invention is to provide a firm support for the writing tablet when it is in a horizontally disposed position across the users lap.

A still further object of the present invention is to provide a means for pivotally displacing the writing tablet capable of undergoing constant use without the need of frequent repair.

These and other objects of the present invention will become more apparent as the description proceeds with the aid of the accompanying drawings in which:

PEG. 1 is a perspective view of a chair with the writing tablet pivotally displaced to the remote side storage position;

FIG. 2 is a sectional view of the pivotal mechanism taken along line 2-2 of FIG. 1;

FIG. 3 is an enlarged perspective view show ng the writing tablet pivotally displaced to an intermediate upwardly disposed vertical position prior to its final pivotal displacement to a horizontal position extending above the seat and parallel thereto;

FIG. 4 is a perspective view of the chair and tablet combination with the tablet in a horizontal position extending above the seat and parallel thereto.

Referring now to H6. 1, a chair generally indicated at 2 and having a seat 4 and a back rest 6 is shown provided with an upwardly disposed tubular side member 8 having pivotally mounted thereon a writing tablet generally indicated at 152. In this illustration, the writing tablet is downwardly displaced in a side storage position, making the chair ready for occupancy without unnecessary obstructions to the user.

Before discussing the procedure for pivotally displacing the writing tablet 1d, the structure of the pivotal assembly generally indicated at ll will be described with specific reference to FIG. 2. Member 8 is provided at its upper extremity with a tubular sleeve portion 12 welded thereto as at 14. A circular spring retaining member 15 is positioned within sleeve portion 12 and supported by the circular upper extremity of side member 8. Member 16 is in turn provided with a raised central portion 18 cooperating with the interior side wall of sleeve portion 12 to form an annular spring retaining groove 26.

Coiled spring 22 is contained by sleeve portion 12 and supported by spring retaining member 1 5 with its lower rim 24 seated within groove 2%. Baffie member 25 having a semi-spherical depression centrally located therein is supported by spring 22 and in turn provides a support for ball 28. The upper surface of ball 23 is seated within a conical depression 31? in spherical member 32, in turn pinned by pin 36 to rod 34 which extends horizontally through apertures 35 in the walls of sleeve 12. As can be seen in PEG. 2, spherical member 32 is further provided with a second conical depression 38 oppositely disposed to conical depression 3i Because spring 22 is held in compression between bafile member 26 and spring retaining member 16, an upward force is exerted on ball 28, tending to firmly position its upper surface within conical depression 39 and thereby impart a locking action to spherical member 32 and rod 34. When rod 34 is rotated about its longitudinal axis, ball 28 is dislodged from depression 30 in spherical member 32 thereby allowing both spherical member 32. and rod 34 to rotate freely through or until the upper surface of the ball seats itself in conical depression 38.

Rod 34 is further provide at one extremity with an integrally fabricated tubular cross member 40 (shown in FIG. 3). As can be more clearly seen in FIG. 3, the writing tablet 15 is comprised of a fiat wooden or metal member 42 supported by braces 44 and 4d attached to its bottom surface. The lower portions of braces 44 and 46 (as seen in FIG. 3) extend in a spaced parallel relationship for a limited distance to form channel 48 therebetween. Brace 44 then subsequently extends angularly away from brace 46 and towards the center of member 42 to provide additional support therefor. Braces 44 and 4d are provided with oppositely disposed apertures through the lower portion thereof and are pivotally attached to tubular cross member 40 by a bolt 50 passed through said apertures and said tubular cross member and secured by nut 52.

Member 42 is additionally provided with an arm support 54 attached to its bottom surface along its lower edge by screws 56.

The method of moviru the writing tablet it} from a d side storage position as shown in FIG. 1 to a horizontal position oppositely disposed from the seat t as shown in FIG. 4 will now be discussed. When the tablet 19 is in the side storage position as shown in FIG. 1, support 5 is horizontally positioned and outwardly disposed with respect to the vertical fiat surface of member 42 in order to provide an arm rest. In addition, as can be best seen in FIG. 2, a semi-circular spacer 39 attached to sleeve portion 12 bears against the edges of braces 44 and 46 in order to extra stabilizing force on the tablet at this point. Thus it can be seen that with the writing tablet in this position, one can easily be seated in the chair without the need of bending or sliding. Furthermore, support 54 provides the occupant with an arm rest, thereby contributing substantially to the overall comfort of the chair.

When the occupant has need of the writing tablet, only two basic movements need be executed. The tablet is first placed in an upwardly disposed position as shown in FIG. 3 by being rotated in its own plane about the longitudinal axis of rod 34. This is done by grasping tablet 1t) and simply rotating it. Rotation of rod 34 will cause a corresponding rotation of spherical member 32 and a dislocation of ball 23 from conical depression 39. As the tablet arrives at the upwardly disposed position shown in FIG. 3, conical depression 33 will have been rotated through approximately 180 to a bottom position and will engage ball 23, thereby resulting in a locking action that will tend to hold the tablet in a vertical position. It should also be noted that when the tablet is in the vertical position illustrated in FIG. 3 with ball 23 seated within conical depression 38, channel 43 located between braces 4 and 46 is in lateral alignment with the upper portion of tubular sleeve 12.

The second step in preparing the writing tablet for use involves the downward pivotal displacement of the tablet about the longitudinal axis of bolt 5% In so doing, rubber bumper 5d held in place on sleeve 12 by screw 63 enters channel 48 and engages the horizontally disposed flanges 62 and 64 of braces idand 46, thereby providing a vertical support for the tablet by exerting an upward force thereon through the braces.

ln order to return the tablet to the side storage position, the reverse procedure is followed. The table is first pivoted upwardly about the longitudinal axis of bolt 50 until bumper 58 is completely clear of channel 48. The tablet is then rotated downwardly in its own plane, causing ball 23 to be dislodge from conical depression 38. This rotation is continued until the tablet has reached the position shown in FIG. 1 and locking engagement is again accomplished by the seating of ball 28 in conical depression 3'1).

Thus it can be seen that the occupant of a chair can stand or be seated without interference from the writing tablet in its side storage position. To use the tablet, only two simple movements are required. These operations can be easily and quickly accomplished without annoyance to persons seated in adjacent chairs and when finally lowered to a position across the occupants lap, the writing tablet provides a sturdy surface which can be used for writing or for the support of books and other matter. In addition, the combined pivotal mechanisms provide a rugged wear-resistant structure capable of long use witl out the need of frequent repairs.

it is my intention to cover all changes and modifications of the example of the invention herein chosen for purposes of disclosure which do not constitute departures from the spirit and scope of the invention.

1 claim:

Means for pivotally mounting a flat surfaced writing tablet on a chair for movement from an initial downwardly disposed vertical side storage position through at intermediate upwardly disposed vertical position to a final operative position extending horizontally and in spaced relationship over the seat of said chai said means comprising the combination of a longitudinal upwardly disposed supporting member attached to said chair, piovtal housing having its upper exteremity terminating in a tablet bumper mounted on said upwardly disposed supporting member, a first pivotal means contained within said housing for pivoting said tablet within the plane of said flat surface from said initial downwardly disposed vertical side storage position to said intermediate vertical position, said housing containing means for exerting a holding action on said first pivotal means when said tablet is in said initial and intermediate positions, a second pivotal means operatively connected to said first pivotal means for pivotally displacing said tablet in a direction transverse to said plane from said intermediate position to said final horizontal operative position, said bumper exerting an upward supporting force on said tablet when in said final operative position, and an arm support member mounted on said writing tablet and extending outwardly therefrom, said arm support member having its upper surface coinciding with one edge of said table to provide an arm rest when said tablet is positioned in said downwardly disposed vertical side storage position.

References (iited by the Examiner UNITED STATES PATENTS 533,592 2/95 Hood 297-162 1,031,287 7/12 Page 16-141 1,649,951 11/27 English 5-57 1,905,859 4/33 Hamilton 297-162 2,468,683 4/49 Michal 248-284 X 2,833,335 5/58 Leclair 288-284 X 2,954,073 9/60 Junkunc 297-162 2,999,268 9/61 Strandengen 188-83 X 3,140,894 7/64 Hicke 297-162 FOREIGN PATENTS 527,259 6/31 ermany.

18,370 of/09 Great Britain.

FRANK B. SHERRY, Primary Examiner.

US3197254A 1963-03-20 1963-03-20 Folding tablet arm chair Expired - Lifetime US3197254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3197254A US3197254A (en) 1963-03-20 1963-03-20 Folding tablet arm chair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3197254A US3197254A (en) 1963-03-20 1963-03-20 Folding tablet arm chair

Publications (1)

Publication Number Publication Date
US3197254A true US3197254A (en) 1965-07-27

Family

ID=23015586

Family Applications (1)

Application Number Title Priority Date Filing Date
US3197254A Expired - Lifetime US3197254A (en) 1963-03-20 1963-03-20 Folding tablet arm chair

Country Status (1)

Country Link
US (1) US3197254A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292972A (en) * 1965-05-28 1966-12-20 Allison F Krueger Chair with a folding tablet arm and to a tablet arm unit of novel structure
US3297359A (en) * 1964-10-14 1967-01-10 Douglas James Bruce Theatre seat with folding arm tablet
US3353866A (en) * 1966-08-22 1967-11-21 Clarin Mfg Co Seating unit
US3598442A (en) * 1969-08-06 1971-08-10 Canadian Seating Co Ltd Collapsible tablet arm assemblies
US3632161A (en) * 1970-07-13 1972-01-04 Universal Oil Prod Co Side arm stowable table
US4159148A (en) * 1978-01-27 1979-06-26 Schulz Terry H Folding arm rest accessory
US4203624A (en) * 1978-09-18 1980-05-20 Knoll International, Inc. Writing tablet
WO1981001096A1 (en) * 1979-10-22 1981-04-30 R Hamilton Desk assembly for a wheelchair or the like
US4270798A (en) * 1979-07-10 1981-06-02 Coach & Car Equipment Corporation Breakaway arm for seat
US4852940A (en) * 1987-08-20 1989-08-01 Weber Aircraft Corporation Stowable table system
US5320414A (en) * 1992-07-16 1994-06-14 Prince Corporation Articulated armrest
US5954393A (en) * 1998-05-28 1999-09-21 Haworth, Inc. Chair with removable worksurface
US6073997A (en) * 1999-04-08 2000-06-13 Koh; Tuang Hock Foldable table for chair
US6837539B1 (en) 2003-12-22 2005-01-04 Chromcraft Corp. Movable tablet assembly and seat
US20080093908A1 (en) * 2006-10-19 2008-04-24 Cooley Gordon D Moveable Armrest
US20080197678A1 (en) * 2007-02-20 2008-08-21 Alvaro Mauricio Olarte Tablet Arm Assembly
US20100090504A1 (en) * 2008-10-14 2010-04-15 Irwin Seating Company Seat with movable tablet
WO2012166486A1 (en) 2011-06-03 2012-12-06 Knoll, Inc. Chair having moveable tablet
USD679517S1 (en) 2010-02-01 2013-04-09 Steelcase Inc. Seating unit
US8746788B2 (en) * 2012-07-19 2014-06-10 Dongguan Howen Plastic & Metal Products Co., Ltd. Fold-down tablet assembly for chair

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527259A (en) * 1894-10-09 Fastening for fishing-tackle
US533592A (en) * 1895-02-05 William c
GB190918370A (en) * 1909-04-01 1910-01-06 Mary Anna Mcclelland Attachments for Chairs.
US1031287A (en) * 1910-10-24 1912-07-02 Sargent & Co Sash-center.
US1649951A (en) * 1923-03-15 1927-11-22 Thomas A English Adjustable connection
US1905859A (en) * 1931-04-06 1933-04-25 American Seating Co Chair with swingable table leaves
US2468683A (en) * 1945-07-16 1949-04-26 Storkline Furniture Corp High chair hardware
US2833335A (en) * 1955-04-29 1958-05-06 Robert A Leclair Self-latching hinge construction for high-chair trays
US2954073A (en) * 1959-06-18 1960-09-27 Bela B Junkunc Folding tablet arm chair
US2999268A (en) * 1958-09-01 1961-09-12 Grorud Jernvarefab As Friction hinge, especially for pivot windows
US3140894A (en) * 1962-03-22 1964-07-14 Brunswick Corp Convertible desk chair

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527259A (en) * 1894-10-09 Fastening for fishing-tackle
US533592A (en) * 1895-02-05 William c
GB190918370A (en) * 1909-04-01 1910-01-06 Mary Anna Mcclelland Attachments for Chairs.
US1031287A (en) * 1910-10-24 1912-07-02 Sargent & Co Sash-center.
US1649951A (en) * 1923-03-15 1927-11-22 Thomas A English Adjustable connection
US1905859A (en) * 1931-04-06 1933-04-25 American Seating Co Chair with swingable table leaves
US2468683A (en) * 1945-07-16 1949-04-26 Storkline Furniture Corp High chair hardware
US2833335A (en) * 1955-04-29 1958-05-06 Robert A Leclair Self-latching hinge construction for high-chair trays
US2999268A (en) * 1958-09-01 1961-09-12 Grorud Jernvarefab As Friction hinge, especially for pivot windows
US2954073A (en) * 1959-06-18 1960-09-27 Bela B Junkunc Folding tablet arm chair
US3140894A (en) * 1962-03-22 1964-07-14 Brunswick Corp Convertible desk chair

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3297359A (en) * 1964-10-14 1967-01-10 Douglas James Bruce Theatre seat with folding arm tablet
US3292972A (en) * 1965-05-28 1966-12-20 Allison F Krueger Chair with a folding tablet arm and to a tablet arm unit of novel structure
US3353866A (en) * 1966-08-22 1967-11-21 Clarin Mfg Co Seating unit
US3598442A (en) * 1969-08-06 1971-08-10 Canadian Seating Co Ltd Collapsible tablet arm assemblies
US3632161A (en) * 1970-07-13 1972-01-04 Universal Oil Prod Co Side arm stowable table
US4159148A (en) * 1978-01-27 1979-06-26 Schulz Terry H Folding arm rest accessory
US4203624A (en) * 1978-09-18 1980-05-20 Knoll International, Inc. Writing tablet
US4270798A (en) * 1979-07-10 1981-06-02 Coach & Car Equipment Corporation Breakaway arm for seat
WO1981001096A1 (en) * 1979-10-22 1981-04-30 R Hamilton Desk assembly for a wheelchair or the like
US4852940A (en) * 1987-08-20 1989-08-01 Weber Aircraft Corporation Stowable table system
US5320414A (en) * 1992-07-16 1994-06-14 Prince Corporation Articulated armrest
US5954393A (en) * 1998-05-28 1999-09-21 Haworth, Inc. Chair with removable worksurface
US6073997A (en) * 1999-04-08 2000-06-13 Koh; Tuang Hock Foldable table for chair
US6837539B1 (en) 2003-12-22 2005-01-04 Chromcraft Corp. Movable tablet assembly and seat
US20080093908A1 (en) * 2006-10-19 2008-04-24 Cooley Gordon D Moveable Armrest
US20080197678A1 (en) * 2007-02-20 2008-08-21 Alvaro Mauricio Olarte Tablet Arm Assembly
US7695061B2 (en) * 2007-02-20 2010-04-13 Series International, Llc Tablet arm assembly
US20100090504A1 (en) * 2008-10-14 2010-04-15 Irwin Seating Company Seat with movable tablet
US8256835B2 (en) 2008-10-14 2012-09-04 Irwin Seating Company Seat with movable tablet
USD679517S1 (en) 2010-02-01 2013-04-09 Steelcase Inc. Seating unit
USD679923S1 (en) 2010-02-01 2013-04-16 Steelcase Inc. Base for seating unit
USD689723S1 (en) 2010-02-01 2013-09-17 Steelcase, Inc. Base for seating unit
USD690143S1 (en) 2010-02-01 2013-09-24 Steelcase, Inc. Base for seating unit
WO2012166486A1 (en) 2011-06-03 2012-12-06 Knoll, Inc. Chair having moveable tablet
US8628142B2 (en) 2011-06-03 2014-01-14 Knoll, Inc. Chair having moveable tablet
US8746788B2 (en) * 2012-07-19 2014-06-10 Dongguan Howen Plastic & Metal Products Co., Ltd. Fold-down tablet assembly for chair

Similar Documents

Publication Publication Date Title
US3446532A (en) Chair
US3544163A (en) Articulated connector
US3337262A (en) Folding table assembly with seating structure
US3215469A (en) Invalid chair
US3309134A (en) Interchangeable luggage-chair structure
US3376068A (en) Footring mounting for chairs
US3434756A (en) Chair with adjustable back and arm rests
US3080195A (en) Self-aligning seating construction
US4493488A (en) Pressure control wheel chair seat
US3975050A (en) Tilting swivel chair support
US4725095A (en) Vehicle seat with mechanical lumbar support having two degrees of freedom
US4616877A (en) Chair with back height adjustment
US6270157B1 (en) Floppy desk
US4575149A (en) Attachable household service tray device for furniture
US1652774A (en) Desk
US6715827B1 (en) Backrest adjusting mechanism used in high chair for infants, toddlers, and small children
US4451084A (en) Backrest height adjustment for office chair
US3627252A (en) Tilting chair
US4642823A (en) Sofa bed recliner
US1114948A (en) Swinging shelf.
US3984888A (en) Adjustable floating chair
US4073538A (en) Arm structure for reclining seat
US2859799A (en) Functional posture controller for chairs
US2799323A (en) Self-aligning seat construction
US3632161A (en) Side arm stowable table

Legal Events

Date Code Title Description
AS Assignment

Owner name: IRVING TRUST COMPANY, ONE WALL ST., NEW YORK, NY A

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HEYWOOD-WAKEFIELD COMPANY A MA CORP.;REEL/FRAME:004009/0451

Effective date: 19820316