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Патент USA US2412750

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Dec.Á 17, 1946.-
2,412,750
A. J. RAlTcH
CHAIR SEAT SUPPORT
5 Sheets-Sheenl _l
Filed Aug. 7, 1945
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A. J. RAlTcH
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2,412,750
CHAIR SEAT SUPPORT
Filed Aug. ‘7, 1945
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A.J.RA1TCH»
¿4129750
CHAIR SEAT SUPPORT
Filed Aug. '7, 1943
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2,412,750
Patented Dec. 17, 1946
UNITED STATES PATENT OFFICE
2,412,750
CHAIR SEAT SUPPORT
Port Washington, Wis., as
Alexander J. Raitch,
mesne assignments, to The Seng
signor, VVby Chicago,
Ill., a corporation of Illinois
Company,
Application August '7, 1943, `Serial No. 497,766
6 Claims.
(Cl. 155-95)
1
This invention relates to an improvement
in chair seat supports, especially designed and
adapted for use on ships.
One application of the invention is in the mess
hall or dining hall of ships where the seats are
tion on line 6--6 of Figure 5 and looking in the
direction of the arrows; and
.
Figure ‘7 is a view in transverse, vertical cross
section taken on line 1-1 of Figure 5 and look
ing in the direction of the arrows.
Referring to the drawings, and more particu
arranged in rows along the sides of the table
larly to Figures 1 to 4, inclusive, it will be seenV
on which meals are served. AThe quarters of
that in one embodiment of the invention the
ships, especially those used for military opera
seat or chair support comprises a base Ill, whichV
tions, are frequently quite crowded, and, of
may
be a iiat piece of mild steel, or other suit
course, ships of this character must make their lO ` able metal, and which is directly fastened to the
voyages regardless of weather conditions. In
deck on which the chair is to be supported. `A
heavy weather if a seat is free to swivel or tilt
weld I i may be employed to fasten the base plate
or slide, it is uncomfortable and many times
Il! to the deck. A post or hollow column I2 is
dangerous to the occupant of the seat.
provided and has a flange I3 of annular form
15
The present invention proposes a seat or chair
welded to its lower end and resting ñatly on the
support which provides for positioning of the
base plate Ill. Suitable fastening means, such
seat close to the table when it is in use by the
as stud bolts I4 and lock washers I5, securely
occupant, and in which provision is made to
fasten the flange I3 and consequently also the
secure the whole of the seat against rocking, ro
post I'2 to the base plate I0.
tating, or sliding when it is in use, and yet the a
The upper end of the post or column I2 is open
usel` of the seat may readily manipulate the same
and receives a bearing designated generally at
to facilitate his approach to and seating thereon
` I6. This bearing I6 has a tubular or sleeve-like
and his arising from and leaving the seat.
body portion I1 which interiorly is of cylindrical
A further object is to provide a chair or seat
form and which is closed at its lower end Vby an
support of this character, which is simple,
rugged, closely organized and -compact in con
struction, easily manipulated, and economical to
manufacture and install.
Other objects and advantages reside in certain
novel features of the construction, arrangement,
and combination of parts which will be herein
after more fully described and particularly
pointed out in the appended claims, reference
being had to the accompanying drawings form
ing a part of this specification, and in which:
integral lower end plate I8. Externally the body
portion I6 and the end plate I8 are provided with
integral reinforcing and strengthening‘ribs I9.
In this way the structure may be made relatively
. light and yet is sufficiently strong and rugged tov
perform its intended purpose. The upper end
of the tubular body portion I'I of the bearing I6
is provided with an integral outwardly directed
flange structure designated as a whole at 2l).`
When the bearing I6 is assembled with the upper
end of the post I2, its tubular body portion I1
extends down into the interior of the: post and
its ribs I9 engage the inner peripheral wall of the
post. This ñange structure 20 of the bearing
Figure 1 is a view partly in side elevation and
partly in diametrical, vertical cross section, show
ing a seat or chair support embodying the
present invention;
Figure 2 is a plan view of the seat or chair
40 I6 rests on the upper end of the hollow post and
portions of it project outwardly therefrom. TheV
bearing I6 is held in place in the post by means
support shown in Figure 1, a portion of the head
piece being broken away for the sale of illustra
tion;
of a dowel pin, or other suitable fastening device,
designated at 2|.
taken on line‘3--3 of Figure 1, parts being shown
in top plan for the sake of illustration;
Figure 4 is a view in transverse, Vertical crossV
section taken on line 4-4 of Figure 2, with parts
shown in elevation for the sake of illustration; '
Figure 5 is a fragmentary view partly in longi
tudinal, vertical cross section and partly in side
body portion I1 of the bearing I6 whereby a radial
` bearing is provided for the shaft. The lower end.
of the shaft 22 is beveled as at 23> and bears
against the lower closed end I8 of the bearing
sleeve, thereby providing a vertical thrust bear
elevation showing a modified form of the inven
tion;
v Figure 6 is a view in transverse, horizontal sec
'
A vertical shaft 22 is supported in the bearing i
I6 for rotation with respect thereto. The pe
riphery of the shaft is in rotative engagement
with the inner peripheral surface of the tubular
Figure 3 _is a view in horizontal cross section 45
ing for the shaft. While the shaft is free to ro
55
tate, _it is held against axial movement with re
2,412,750
,
3
spect to its bearing sleeve by means of a set screw
25 threaded through the post and through the
bearing sleeve and having its inner end project
grecs. The slot 3l’ has a reduced extension 31a
ing into an annular groove 26 provided in an in
mediate portion of the pin 36 when the parts
termediate portion of the shaft
The upper
end of the shaft 22 projects above the flange 26 of
the bearing sleeve and has. a supporting and guide
leased ior turning and consequently the pin 35
plate 2'! securely fastenedv thereto.l
shouldersâ'l, and 3.8.
(see Figure 2) which snugly engages the inter
are so positioned that the head piece 28 is re
may be swung into engagement with the stop
`
l
>VTire normal position ofi the seat referred to is
duced, the supporting plate apertured to receiver» 1c. the position thereof wherein it faces the table, as
it. does when the occupant of the seat is seated
the reduced end of the shaft,
therein and in normal position for eating. Means
staked or riveted over a margin of the' opening
isi provided for biasing the seat to this position
of the supporting plate to rigidly interconnect
these parts.
and may convemently comprise a coil spring Se
Figure 1, the upper end of the shaft may be re
A head piece, designated: generally atv 2B5_ is
slidably supported on the
`
`
`
‘
or coils surrounding the
- upperpor-.tinn ofi. the. shaft 22 and having ends or
plate 2l'. The head
terminals fili" straddling ñrst an anchoring lug 6i
integral" with thelñange 2i) and then beyond the
lug alsoY straddling the stop pin 3e. With this
channel Zâ andan upper interñtted channel Se.. 20 construction when the seat is swung in either
direction, the stop pin 36 moves with it andit
iiexes one of the terminals ist of the spring ' 39,A
theother terminal, however, being held against
-movement by the anchoring lug» dii.
For the" purpose of releasably
holding the seat
`
channel 3U en’gaged'with the inner'faceof th'e‘side
channels of the channel 259. lI’he base or body
against
p‘ortions'Sil and 32 of‘ the channels 2'9 and 3Q are
spaced from each other andi this space provides
aîguideway' or bearing 33"'in which the support
pin or key, designated generally at 42,7is Y:fixed
to the rearward portion of the-head piece 28 and
ing" plate 2`1~` is slidably fitted. The channels 23
depend‘s'therefrom. This locking pin or key' 4'2
is designed’ for cooperation with the keeper slot
or keyway, designatedv at 43, which is in ñ'xed rela
tion to theI postY l2. The-pin ¿i2 is shown to ad
vantage in> Figure 1' andis provided withV a fixed
collar or flange @il which engages'the underside
of the bottom of te lower channel 29 and` with
shaft 22 extends throughV this slot
'
an` attaching portion 4'5 which extends through>
head piece 28
an opening in the bottom of the channel 2-9 and
is riveted or staked thereto. The lower end' of
the locking pin-or key 42 is beveled as'at 46;
The keeper slot or keywayv ¿i3 isA preferably de
nned by wings 41 which' may be integral4 rear
ward extensions of the-flange- 29 and which have
their confronting faces taperedl as shown, to fa
cilitate entrance of theY pin» 42 into the'slot or
keyway 43.
'
as‘it may, then the pin or key 42' is snugly held
by the opposed walls of thev slot 43.
Siin Figure 1f.
, With- this type of construction the seat SV may
bef rotated'about'the vertical axis of the» post i2
and’may be slid back and-'forth toward the table
(not shown).
The keeper'slot
50
rIf'oreleasably secure-the pin 42' inthe keeper
sl'otii't’` a‘pivoted latch; designated> generally at
t8?, i'sv provided. This; latch is a bar-like piece of
metal' pivotally mountedV or
fulcrumed interme
its ends, as atl-9», on fulcrurn lugs 50 which
are integral with andI depend' from the underside'
of one of the wings £7; The outer end of' the
latch bar 48V is enlarged or weighted;` asv at, 5I, so
thatthe inner end ofE the latch is biased to'swing
upwardly and in betweenl keeper lugs 52 formed
integral with and depending from the-other wing
60 4T. The:
latching bar located in
between the lugs 5U andl 52 is provided` with a
bevele'd‘ latching tongue or> projectionv 56. The
provided.
bevel of this latching tongue 53 or projection faces
iilxed tothe supporting» plate 27» while its lower
the bevellof` the locking pin or key e2 when', the
portion projects down through land beyond the 65 head piecefisI disposed rearwardly or in the)4 posi;
` slot 3i "so as to be in» cooperative relation to stop
tion shown- in Figure< 1. Consequently, when the
seat is pushedl forwardly, the bevels of thepin 42
and of the latching» projection 53- coact to auto»
Y
When the seat is released for turning,
matically cam the latching bar 48 down andal
the pin 3S, eoacting either with "the stop shoulder
or' the stop shoulder` SS, limits the swinging 70 low.- the pin 42, to ride over its latching projection
§53-,` after which theweight or bias of the latching
bar> 48 .causes its latching projection 53- toV swing
upwardly and substantially vertical faces of Ithev
pin and latching bar toíengage.,thereby-releas
ably holding the seat against either sliding or
2,412,750
turning movement. The user of the chair may
readily release the same by grasping the enlarged
end 5| of the latch and lifting upwardly on the
bearing at the lower end of the shaft 22, and
due to the provision of the ball bearings which
are interposed between the supporting plate at
same.
The forward movement of the seat is limited by
the engagement of the rear end wall of the slot
the upper end of the shaft 22 and the channels
which go t0 make up the head piece.
While I have shown and described several con
structions in which the invention may be advan
3|'` with the shaft 22. The rearward movement
of the seat is limited by the engagement of the
pin 36 with the end of the slot extension 31a.
With the construction such as described, the
tageously embodied, it is to be understood that
the constructions shown have been selected mere
ly for the purpose of illustration or example, and
that various changes in the size, shape, and ar
chair or seat may be releasably locked against
movement either when in or out of use. The
user of the chair may readily conveniently posi
tion the same to enable him to seat therein with
rangement of the parts may be made without
departing from the spirit of the invention or the
scope of the subjoined claims.
ease and grace by simply lifting up on the en
larged outer end of the latching bar 48 and pull
ing rearwardly on the seat. He then may turn
the seat in either direction to present it for con
venient sitting. When seated, he majT swing
around and face the table and then shift for
wardly until the latching bar automatically locks ,
the key or locking pin 42 in its keeper slot 43
1. A chair support comprising a post having
its upper end at least hollow, a bearing having
a tubular portion interiitted within the upper
hollow end of the post, the tubular portion having
which consequently secures the seat against either
rotating or sliding movement.
a closed lower end, a flange structure integral
with the upper end of the tubular portion and
resting on the top of the post, means for securing
the bearing to the post, a vertical shaft having
a radial bearing on said tubular portion and
`
The embodiment of the invention shown in
Figures 5 to 'l is identical with that shown in
Figures 1 to 4 hereinabove described save in three
particulars. In this modified form of the inven
tion a ball bearing 60 is incorporated in the thrust
having a thrust bearing on the closed lower end
thereof, said shaft projecting above the bearing,
bearing between the lower end of the shaft 22 ‘
a guide plate fixed to the upper end of the shaft,
a head piece having a guide way within which
said guide plate is mounted for relative longitu
dinal movement, the 'guide plate and >guide way
constraining the head piece and the guide plate
and the lower end wall i8 of the bearing I6. The
ball bearings directly engage the lower end wall
I8 of the bearing IB and also is accommodated
in a conical recess El formed in the lower end of
the shaft 22. The second particular in which the ‘
modified form of the invention varies from that
previously described is in the fact that ball bear
ings 62 are provided between the supporting plate
21’ corresponding to the supporting plate 21 and
the lower channel 29 and that similar ball bear
to corresponding rotative movement, a stop pin
fixed to the guide plate, -said guide way having
a slot therein through which the stop pin pro
jects, stop lugs on the flange structure cooperable
with the stop pin to limit turning movement of
the guide plate and head piece in either direc
tion7 and releasable means for locking the head
piece against turning or sliding movement in one
ings 63 are provided between the top of the sup
porting plate 21’ and the base or body portion of
the upper channel 30’ of the head piece 28’ cor
responding to the head piece 28. Due to the pro
vision of the ball bearings 62 and B3 the support
ing plate 21 is slightly modified in that it has
race-ways 64 and 65 for the ball bearings 62 and
63, respectivel . The corner between the body
portion and side flanges of the channel 29 pro
vides a race-way complementary to the race-way
64. Race-ways 66 complementary to the race
way 65 are formed in the body portion of the
upper channel 30' of the head piece.
The third particular in which the modified form
of the invention departs from that form shown
in Figures l to 4 is in the formation at the outer
end of the latch designated at 48' and corre
. spending to the latch 48.
As shown in Figure ‘7,
this formation, designated at 5|', has an upward
projection or hook-like structure which provides
a weight and a handle and also forms a support
upon which the user of the seat may hang his hat.
In all other respects the two constructions are
identical and the description of the form shown
in Figures l to- 4 applies to the modification
shown in Figures 5 to 7. Corresponding refer
ence numerals have been applied to the elements
of the modification shown in Figures 5 to rI wher
ever the elements are identical, and where their
construction has been varied then primed refer
ence characters have been employed. The modi
fied form of the invention operates in exactly the
same manner as the form shown in Figures l to
4 save that it i-s freer and smother in its action
due to the provision of the ball in the thrust
relative adjustment of the head piece and guide
plate.
2. A chair support comprising a post having
its upper end at least hollow, a bearing having
a tubular portion interñtted with the upper hol
low end of the post, a tubular portion having a
closed lower end, a ñange structure integral with
the upper end of the tubular portion and resting
on the top of the post, means for securing the
bearing to the post, a vertical shaft having a
radial bearing on said tubular portion and hav
ing a thrust bearing on the closed lower end
thereof, said shaft projecting above the bearing,
a guide plate fixed to the upper end of the shaft,
a head piece having a guide Way within which
said guide plate is mounted for relative longitu
dinal movement, the guide plate and guide way
constraining the head piece and the guide plate
to corresponding rotative movement, a Stop pin
fixed to the guide plate, said guide way having a
slot therein through which the stop pin projects,
stop lugs on the ñange structure cooperable with
the stop pin to limit turning movement of the
guide plate and head piece in either direction, a
lock pin fixed to the head piece and projecting
downwardly therefrom, wings integral with the
flange structure and defining a keeper slot with
which. said lock pin is cooperable in one relative
adjustment of the head piece and guide plate to
prevent turning movement of the head piece, and
a latch mounted on the wings and cooperable
with the lock pin to prevent relative sliding move
ment of the head piece and guide plate.
3. A seat comprising a post, a combined radial
and thrust bearing carried by the upper end of
the post, a vertical shaft ñtted and supported in
2,4123@
.
said bearing. for rotationl and having its uppery
end projecting above the bearing,v a supporting
8
the head piece. and supporting
and guiding plate,A
„ ‘5, ¿ahead piece `co_n'iprising a post,v a v i
wise
ñtted ofwhereby
the plate
the but
headispiecefmay
constrained
slideto lengthrotate
having
:fined toatheupper
guide wayinwhîch
endfo'iî 'thesaidjsuppoi'tizigfand
shaft, a head
therewith, and means for limiting the extent to
guide plate is slidalolly interñtted"Wherebyßthe
in either direction' and comprising Ya stop pin io is ycCristiani/¿c1 te" rotate therewith, mean-sf fò?
and head piece in either direction. t
_4,„ ,A seat comprising a post, a combined radial
and thrust bearing carried by the upper end of
’ ing> terminals embracing
pin, an'd'rjn'eans-'iiifed
with respect“ to 'the post fon resisting movement
of either terminal in onedirection-,andfifeleasablë
thepost, a verticalshaft fitted and supported in
means for locking the jhead ‘piece against sliding
said bearing for rotation and having its upper 20 o1' rotative movement relative to. the supporting
end projecting above the bearing, a supporting
and guide plate in one `longitiidinal adjustment
shaft, a head piece having a guide way in which
A seat support comprising a post, a shaft
said supporting and guide plate is slidably intere
rotatively mounted in said post a supportinfr and
?tted whereby the head piece may si‘de length- 25 c.Hiding plate carried by said shaft a head piece
head piece against sliding or rotative movement
and sliding motion comprising a pair of inter
in one relative position of the head piece and
engageable members, one of said members being
supporting and guide plate and comprising a lock 30 carried by said post and the other 'membercari'
pin ñxed to the head piece and projecting downried by said heady piece,v said members 'being
wardly therefrom, means ñxedly interconnected
moved into interëengaging Vrelati’ç'inship‘ to ‘preä
with the post and defining a keeper slot with
vent rotation of said head piece‘upoií` slidingVv said
porting plate to- prevent turning’movement of
the head piece, and a latch cooperable with the
lock pin to prevent relative sliding movement of
ing relationship to prevent
sliding
movement-fof
'
"" `
" ' "
‘ ' l
said head piece.
J. VRAl'IA‘CHT
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