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Патент USA US2124893

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July 26, 1938.
Filed Sept. 15, 1936
2 Sheets-Sheét. i
July 26, 1938. >
' Filed Sept. 15, 1936
2 Sheets-Sheet 2
5AM PEP/=45
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1 .
Patented July 26, 1938
Sam Peppas, Elyria, Ohio
Application September 15, 1936, Serial No. 100,851
1 Claim. (Cl._155—85)
This invention relates to I improvements in
chairs and more particularly to that type of
chair having a pivoted seat and used primarily
in theatres.
Chairs of this type are usually arranged in
rows, one behind the other, leaving spaces to
provide aisles through which access is had to
the chairs for seating or leaving. When the
seat is in its lowered or occupied position it
10 usually extends considerably into these aisles
and it is for this reason that the seats are piv
otedly mounted so that they may be swung to
their upper or unoccupied position ‘to free the
aisle so as not to interfere with persons taking
15 or leaving the seats. Some of these seats are
freely pivotable for movement manually by the
user while others having spring means vto main
tain the seats in raised position, being adapted
formanual movement into ‘occupied position by
20 the user when desired. While certain types of
‘the latter chairsrare constructed alike it is found
after installation that they require different de
grees of spring tension in order'that the seat
will be freely, quickly, and noiselessly raised to
an unoccupied position. For this reason the
spring means heretofore employed, which merely
consisted of a single springmounted oneach
seat, was objectionable, andgas a result has not
It is thereforehan object of the present inven
tion to provide'a pivotedseat fora chair of the
type referred to,ywhich will eliminate thaa'fore
mentioned objections with the result that the
seats will at, all times assume‘an upright or un
occupied position the moment a person lifts'his
or her weight from the seat, thus providing for
a free, unobstructed aisle through which persons
vide an adjustment for the spring means where
by the seat may be properly balanced so‘as to
operate freely but quietly.
A still further object of the ‘invention is to
provide an adjustableyspring tensioning means
45 for the seat which may be attached to chairs of
well known construction without in any manner
necessitating reconstruction or rearrangement
of the chair parts, and likewise one which may
be readily attached to chairs which have been
50 previously installed in theatres or like places.
With the objects above indicated and other
objects hereinafter explained'in view, my inven
tion consists in the construction and combina
tion of elements hereinafter described and
55 claimed.
embodying the present invention, showing the
seat in full lines in its normal unoccupied posi- ,_
tion and in dot and dash- lines in its lowered or '5
‘occupied position.
Figure 2 is a front elevational view of a frag
mentary portion of the bottom of the seat struc
ture shown on an enlarged scale to more clearly
illustrate the structural details.
Figure 3 is a side elevational view of that
shown in Figure 2.
Figure 4 is a view of the various parts of the
spring assembly, arranged in separated relation
and showing the manner in which the parts are ‘15
Figure 5 is a view similar to Figure 2 but of a
modi?ed structure still embodying the same in
Figure 6 is a side View of that shown in Fig- 20
ure 5.
Figure 7 is a view of the various parts of the
modi?ed. spring assembly shown in Figure 5, ar
ranged in separated relation and showing the
manner in which the parts are assembled.
In the drawings I have shown one type of
chair to which the invention is particularly well
adapted, but it should be understood that I am
not to_ be limited thereto 'as it'is obvious that
the invention is as well adapted to other types ‘30
of chairs.
The chair comprises a pair of side members
[IL-l0 which are spaced apart and extend in
vertically parallel relation. These side members
are preferably madeof metal and in the present 35
instance are H shaped. The lower ends of the
side members are adapted to rest upon a floor or
other suitable supporting structure to which
A further object of the invention is to pro
Referring to the drawings,
Figure 1 is a side elevational View of a chair
they are rigidly secured, while the upper ends
have arm rests li—!| secured thereto in any 40
well known manner.
A back 12 has its lower
portion secured to the side members and ex
tends upwardlyat an angle, the front surface of
which may be upholstered or otherwise covered
as indicated by I3.
A seat I4 is pivotally ,mounted on the side
members l0—i® and has an upholstered cushion
l5 secured to the upper side and upon which a
person may sit when the seat is in its lowered
or occupied position as indicated by the dot and 50
dash lines. The seat It may be pivotally
mounted in any desired manner but in the pres
ent instance a pair of brackets IS are positioned
upon opposite sides of the seat and have, their
rear ends bolted or otherwise secured at ll to 55
the side members l9-—I0. The forward ends of
the brackets l6 are formed with circumferential
?anges l8 which extend inwardly toward each
other and co-axial with the axis are circular
bosses l9.
The seat M has a pair of members 20 riveted
or otherwise secured at 2| to the underside of
the seat which are of angular cross section and
have one of their legs projected downwardly
when the seat is in its lowered position.
members 29 at their lower ends are provided
upon the free end of the rod 33. This collar has
a plurality of pairs of transversely aligned open
ings 49 which are adapted to align with an open
ing 4i provided in the outer end of the rod and
a pin 42 is placed within the selected pair of
openings 49 and opening 4| to prevent relative
movement. By turning the collar 39 about the
rod 33 the spring 35 is tensioned as desired and
the pin 42 is then inserted through the aligned
openings to maintain the tension adjustment. 10
All of these parts are stationarily mounted with
respect to the seat except the end 36 of the
spring and when the seat is moved to its lowered
or occupied position the end of the spring is also
against the tension therein. As soon as 15
15 adjacent which the latter is positioned as viewed . the weight on the seat is removed the tension
in Figure 2. The circular enlargements 22 are
likewise provided with co-axial bosses 23 which in the spring causes the end 36 to exert a force
are arranged adjacent the bosses IS, the inner against the under side of the seat with the result
adjacent faces of the bosses being recessed to that the latter is moved quickly and quietly to 20
balls 24. This construction provides a its upper or unoccupied position.
In the modi?cation shown in Figures 5 to '7
pivot for the seat and the balls enable the seat
vinclusive, the chair parts are arranged precisely
to be moved quietly and frictionlessly. On dia
which are slightly smaller in diameter than the
circumferential ?anges [8 of the bracket i6 and
metrically opposite sides of the circular enlarge
ments 22 are extensions 25 which project out~
25 wardly and are disposed within the circumfer
ential ?anges l8 thus functioning as a guide in
the relative movement of the members.
Clamping members 26 are positioned upon the
inside of the circular enlargements 22 and have
extensions 21 which bear against the adjacent
sides of the enlargements co-axially of the bosses
and balls, while the opposite end is bent laterally
at 28 beyond the adjacent portion of the en
largements 22 and are provided with grooves 29
35 adapted to seat on tongues 39 provided on the
circumferential ?anges It to prevent relative
angular movement therebetween. The ends of
the brackets within the circumferential ?anges
i8 are provided with openings to receive bolts 32
which extend through arcuate slots 3i pro
vided in the enlargements 22 and openings in
the clamps 26. Ordinarily nuts are provided on
the ends of these bolts which may be tightened
to hold the various described parts in assembled
45 relation, but in a manner to permit unrestricted
pivotal movement of the seat. The ends of the
slots 3% are positioned so as to limit the pivotal
movement of the seat and likewise it will be
noted that the openings for the bolts 32 are
positioned eccentrically with respect to the piv
otal axis of the seat.
This much of the con
struction forms no part of the present invention
except as it may be included in combination with
the improved spring device.
In the present embodiment of the invention
one of the bolts 32 is utilized and preferably the
right one as viewed from the front of the seat
so that in the downward movement of the latter
the spring device will have no tendency to be
come loosened. Furthermore only one spring
device is required for a seat in order that it
efficiently operate.
A length of rod 33 has an axial opening 34 in
one end thereof which is interiorly screwthreaded
65 and ?ts the screwthreaded end of the bolt 32.
The rod 33 is screwed tightly into place against
the clamp 23 and holds the parts in assembled
relation thus taking the place of the usual nut.
A spring 35 has a coiled portion which encircles
the rod 33 and a laterally extending end 36 which
engages the under side of the member 26 as
shown in Figures 2 and 3 and is adapted to be
moved thereby. The other end of the spring
35 is bent axially at 31 and ?ts Within an open
75 ing 38 provided in a collar 39 loosely mounted
the same as those shown in the ?gures hereto
fore described and the same reference numerals
are employed to designate corresponding ele 25
The bolt 32 extends through aligned openings
in the circular enlargement 22 of the bracket I6
and the clamp 26 and a nut 32’ has threaded
engagement with the bolt for maintaining the
parts in assembled relation.
In this modi?ed construction the clamp 26 has
an extension 43 preferably formed integral there
with projecting from one side thereof in paral
lelism with the axis of the seat pivot.
A spring _
44 has a coiled portion which encircles the ex
tension 43 and a laterally extending end 45 which
engages the under side of the adjacent member
20 of the seat l4. The other end of the spring
has an axial extension 46 adapted to ?t within 540
an opening 4'! provided in collar 48 which is
loosely mounted on the free end of the extension
43. The collar 48 has a plurality of pairs of
therethrough any pair of which is adapted for
alignment withan opening 50 provided in the
end of the extenison 43. A pin 5| removably ?ts
within the desired aligned openings 49 and 59
and prevents relative movement between the
collar and extension 43. This arrangement holds
the collargin properly adjusted position and at
the same time prevents accidental removal.
The desired tension for raising the seat may
be obtained by removing the pin 51 and rotating
thesleeve 48 in the proper direction until the
spring is properly tensioned. The nearest pair
of aligned openings 49 are then brought in to
alignment with the opening 50 in the extension
43 and the pin 5! is then reinserted therein. A
wide range of spring tension is thus provided. 60
When the seat is moved to lowered or occupied
position the end 45 of the spring 44 is moved
therewith thus increasing the tension in the
spring. When the weight on the seat is re
moved this tension exerts a force on the seat
through the engaging end of the spring and
causes the seat to be raised quickly and quietly
to its upper or unoccupied position.
‘While I have described the preferred embodi
ment of the invention it is to be understood that 70
I am not to be limited thereto inasmuch as
changes and modi?cations may be resorted to
without departing from the spirit of the inven
tion as de?ned in the appended claim.
What is claimed is:
A chair comprising a frame, a pivotal seat,
brackets having one of their ends secured to
said frame and their other ends extending out
wardly on opposite sides of said seat, pivotal
mountings between said seat and the outer ends
of said brackets, removable clamps positioned
inwardly of said pivotal mountings and having
portions engageable with said brackets, bolts for
holding said clamps and brackets in assembled
10 relation and said pivotal mountings in operative
position, the screwthreaded ends of the bolts pro
jecting inwardly toward each other beyond said
clamps, a member having one end rigidly con
nected to one of said brackets and extending in
15 wardly therefrom in spaced relation to but sub
stantially parallel with the axis of said bolts and
its other end free, the free end of said member
being provided with an opening extending trans
versely therethrough, a tension spring having a
coiled portion encircling said member and one
end projecting laterally into engagement with
said seat for resistably maintaining the latter in
its normal raised position and its other end ex“
tending angularly, a collar loosely mounted on
the free end of said member and connected to
the angular extension of said spring, said collar
being adapted for limited angular adjustment
whereby the tension in said spring may be varied,
said collar being provided with a plurality of 10
pairs of transversely aligned openings, said pairs
of openings being selectively adapted for align~
ment with the transverse opening in said mem
ber upon angular movement of said collar, and a
pin insertible in the selected pair of aligned
openings in said collar and in the transverse
opening in said member to secure said collar in
adjusted position.
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