U.S. patent number 3,708,202 [Application Number 05/108,885] was granted by the patent office on 1973-01-02 for independent seat rise stacking and row chair.
This patent grant is currently assigned to American Seating Company. Invention is credited to Chester J. Barecki, William S. Lindberg.
United States Patent |
3,708,202 |
Barecki , et al. |
January 2, 1973 |
INDEPENDENT SEAT RISE STACKING AND ROW CHAIR
Abstract
A stacking and row-forming chair is equipped with arch sides
connected by forwardly turned portions of an inverted U-shaped back
frame, and spaced parallel tubes extend between said back frame
portions, on the rearmost of which tubes is rotatably mounted the
cushion-bearing seat of the chair. The chairs may be anchored in
rows by detachable arm rest members.
Inventors: |
Barecki; Chester J. (Grand
Rapids, MI), Lindberg; William S. (Grand Rapids, MI) |
Assignee: |
American Seating Company (Grand
Rapids, MI)
|
Family
ID: |
22324629 |
Appl.
No.: |
05/108,885 |
Filed: |
January 22, 1971 |
Current U.S.
Class: |
297/239; 297/248;
297/335 |
Current CPC
Class: |
A47C
4/028 (20130101); A47C 1/124 (20130101); A47C
4/02 (20130101); A47C 3/04 (20130101) |
Current International
Class: |
A47C
1/00 (20060101); A47C 3/04 (20060101); A47C
4/02 (20060101); A47C 4/00 (20060101); A47C
1/124 (20060101); A47C 3/00 (20060101); A47c
001/124 (); A47c 003/04 () |
Field of
Search: |
;297/239,248,160,162,335,257,444 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Zugel; Francis K.
Claims
We claim:
1. A stacking chair comprising: first and second side frame members
each made from a continuous tube and having a front and a rear leg
member and an upper horizontal connecting member, the lower ends of
each pair of leg members being spread apart to permit stacking of
chairs; a back support tube of general inverted U-shape and having
a pair of side forwardly projecting arms attached respectively to
said side frame members and providing a central opening to receive
a seat in lowered position; a back secured to said back support
tube; a forward and a rear horizontal cross member, each connected
between said forwardly projecting arms of said back tube and
located toward the rear of said arms; a seat rotatably mounted to
said rear cross member for movement between a horizontal position
at which said seat is partially supported by said forward cross
member and a raised position permitting an occupant to step
backwardly into said opening between said forwardly projecting side
arms of said back tube to facilitate passage of a person.
2. The apparatus of claim 1 further comprising a pair of hinge
brackets mounted to the bottom of said seat and rotatably coupling
said seat to said rear horizontal cross member.
3. The system of claim 1 characterized in that said first and
second side frame members and said back tube are made from tubes of
square cross section and said front and rear horizontal cross
members are made from tubes of round cross section.
4. The apparatus of claim 1 wherein said back includes a cushion
member, and said apparatus further includes clip members attached
to the sides of said cushion member and having outwardly extending
tongues received in spaced slots on the inside of the upper portion
of said back support tube.
5. Apparatus for connecting adjacent chairs in a row comprising: a
pair of chairs each having a pair of side arch-shaped frame members
with downwardly extending spread legs; a tubular back frame
generally in the shape of an inverted U having its lower portions
turned forwardly to form arms, said arms being secured adjacent the
tops of said side frames; a front and a rear cross tube connecting
the rear portions of said arms of said back frame; a seat; hinge
brackets connected to the bottom of said seat and rotatably
received on the rear cross tube to permit said seat to be raised;
said front cross tube being positioned to support said seat in a
lowered position; and a connector assembly including an arm rest,
an angularly extending support tube beneath said arm rest and
adapted to be placed between and extend along the rear legs of two
chairs placed side-by-side, a downwardly extending forward member
connected to said support tube and paralleling the front legs of
two such chairs, said connector assembly further including first
leg-clutching bracket means on said angularly extending support
tube of said connector and on said forward member thereof to
slidably engage and couple with the outer surfaces respectively of
the rear and front legs of one arch-shaped side frame member of one
chair when said connector is lowered onto it, and second
leg-clutching bracket means on said angularly extending support
tube of said connector and said forward member thereof to slidably
engage and couple with the inner surfaces respectively of the rear
and front legs of the adjacent arch-shaped side frame member of the
other chair when said other chair is lowered onto said connector
after said connector is attached to said first-named chair.
6. The apparatus of claim 5 characterized in that arch-shaped side
frame members are tubes having square cross sections and said first
and second leg-clutching bracket means include channel-shaped
brackets constructed to fit over the associated square section
tube.
Description
BACKGROUND AND SUMMARY
Stacking chairs are in universal use, but they have limitations in
comfort and use in row seating and the like because of the
difficulty in allowing others to pass and requiring rather wide
spacing between rows. We have discovered that it is possible to
provide stacking chairs with independent rise seats which enable
the occupant to stand back within the chair recess when the seat is
raised and thus allowing others to pass in auditorium grouping.
This allows closer row seating with the ease of passing desired in
auditorium seating. Further, such structure does not interfere with
the stacking of the chairs. Also, the chairs may be attached in
rows by the use of gang-type arm rests which fit between the
chairs, while at the same time permitting ready separation of the
chairs for the stacking of the chairs when this is desired.
DRAWINGS
In the accompanying drawings,
FIG. 1 is a front perspective view of the chair with the seat in
normal position;
FIG. 2, is a rear perspective view;
FIG. 3, a front perspective view with the seat raised;
FIG. 4, a broken perspective view of the seat portion of the chair
showing the method of attachment of the seat;
FIG. 5, a group of the chairs in stacked relation;
FIG. 6, an exploded view of the chair showing the parts in
separated relation, the inner and outer back panels being reversed
to show their back sides;
FIG. 7, a fragmentary exploded perspective view of the clip
attachment to the inner back panel;
FIG. 8, a perspective view of the chair with the individual arm
rests attached;
FIG. 9, a perspective view of one set of right and left hand
individual arm rests;
FIG. 10, a front perspective view of two chairs connected by a
connector-type middle arm, and
FIG. 11, a perspective view of a connector-type middle arm
DETAILED DESCRIPTION
In the specific structure shown in the drawings, a stacking chair
20 has a back panel 21 supported for ready removal and a seat 22
which can be raised and lowered. For stacking of the chairs, as
illustrated in FIG. 5, the frame 23 of the chair is constructed
with the legs 24 slightly spread apart at their lower extremities
25 so that they may be stacked. The upper ends of each side pair of
legs 24 are connected by means of a continuous horizontal upper
connecting member 25a (see FIG. 3), to form arch-shaped frames. The
leg tubes 24 may be provided with resilient bumpers 26 and 27
formed of rubber or the like and secured to the inside front and
rear surfaces to protect the finish of the legs. The back support
tube 28 projects rearwardly at an angle to permit the stacking of
the chairs without interference by the upholstered back panel
21.
The cross tubes or members 29 and 30 are preferably round and are
formed with smooth bottom surfaces so that they will not mark the
upholstered seat cover on which the chair rests when stacked.
Further, the use of cross tubes which are round in cross section is
better for the occupant because he will be less conscious of the
tube when he backs against it while letting other pass. Also, it is
important that the rear tube 30 be round instead of square because
the seat 22 turns on it by means of the two brackets 31 which
receive the tube. The seat is held against sliding sideways along
the tube 30 by the roll pins 32 positioned against each bracket.
The roll pins may be placed in the vertical position show or, if
desired, in a horizontal position where they are less likely to
mark the seat cushion above.
The seat itself may be formed of any suitable materials, being
preferably provided with a bottom board 33 which may be perforated
in several places 34 to let the air escape at the seat is
compressed by the occupant's weight on it. A resilient bumper pad
35 formed of rubber, plastic, or other suitable material is
provided at each side of the seat board to protect the board and to
prevent noise as the board strikes the front cross tube 29 when the
seat is lowered. The bumpers 35 may be held in place by screws 35a
placed on the seat bottom 33 so that the forward cross tube 29 will
strike the central portion of the bumpers between the fastening
screws 35a. The back panel 21, as shown best in FIG. 6, consists of
an outer rear panel 36 held to the inner panel 37 by tamper-proof
screws 38. Such screws require a special wrench for removal. The
inner panel 37 is the support for the foam pad 39 and the fastening
of the upholstery material 40 with upholstery tacks, staples or
cement, etc.
The completed inner assembly is held in place inside of the back
tube 28 by three or more clips 41 which are attached to the inner
panel by screws 42 and fit into slots 43 along the inner surface of
the U-shaped square tube 28. If the inner panel is rather thin, tee
nuts 44 held in place by brads 45 may be used to prevent a
loosening of the back panel during use. Such tee nuts may be
omitted if a thicker piece of plywood is used. Further, if a metal
inner panel is used, the tee nuts may be welded in place. Also, for
thinner inner panels, the tamper-proof screws 38 may also be turned
into tee nuts.
The clip 41 has an offset 46 that fits tightly against the edge of
the inner panel so that the clip will not turn and work itself out
of the slot 43 so as to cause the back panel to fall out of the
chair. The tongue or nib 47 which fits into the slot 43 is reduced
in width to provide shoulders 48.
As shown best in FIG. 6, the tubular frame 23 is preferably a
welded unit, with square closures or plugs 50 closing the ends of
the forwardly projecting arms 28a, 28b of the square U-shaped back
tube, and the feet are provided with conventional chair glides 51.
The resilient bumpers 26 and 27 may be held in place each by one
screw 52.
We prefer to equip the chair with arm rests which may be secured to
the chair when the chairs are not stacked. An individual arm rest
fitting on the right side is indicated by the numeral 56 and on the
left side by the numeral 54 for use on a single chair. Each arm
rest consists of the rest portion 55 secured by an attaching plate
53 to the supporting tube 57 and with two leg-clutching brackets 58
at its lower end, the lower bracket being preferably provided with
a pivotally mounted swinging locking tab 59 which rests on the rear
bumper 27 of the rear chair leg to lock the arm rest onto the
chair. The arm rest member is provided also with a forwardly
projecting tube 60 shaped to parallel the front leg of the chair
and equipped with one leg-clutching channel bracket 61.
To connect two chairs in a row of chairs, we provide a chair
connector-type of middle arm rest 62 which fits on the right side
(occupant's right) of one chair 63 and then a second chair 64 is
placed on it. This continues down the line until a whole row is
completed, the assembly working always toward the occupant's
right.
The connector rest 62 consists of a rest 65 secured by an
attachment plate 66 upon the supporting tube 67, with two
leg-clutching clutching brackets 68 gripping the outside of the
rear right leg 69 of the left chair 63 and one leg-clutching
bracket 70 gripping the inside of the rear left leg 71 of the right
chair 64. The middle arm rest 62 has a forward projecting tube 72
that parallels the front legs and has one leg-clutching bracket 73
gripping the outside of the right front leg 74 of the left chair 63
and one leg-clutching bracket 75 gripping the underside of the left
front leg 76 of the rear chair 64. The individual arm rests 53 and
54 can be used for the right and left end chair sides at the aisle
to complete the arm rest setup.
To remove the row setup, the right chair (occupant's right) is
raised and then the exposed connector arm is lifted out, and then
the next chair and the connector arm in sequence down the row.
Since the connector middle arms are not provided with locking tabs,
no unlocking is required in disassembling the row of connected
chairs.
We prefer to dip the lower portions of the arm rest units into a
plastic solution to prevent metal-to-metal contact and to prevent
scratching of the finish on the chair legs.
While in the foregoing specification we have set out the structure
in considerable detail for the purpose of illustrating embodiments
of the invention, it will be understood that such details may be
varied widely by those skilled in the art without departing from
the spirit of our invention.
* * * * *