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Патент USA US2407772

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sepf.`17, 194e.
J. P. DE Rass
-2,407,771 -
«SEAT SUPPORT
Filed Aug. 4, ~1941
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INVENTOR
BY
JOHN/.3 DeRosa
/Nê/u/»j 94. ’(/awà-y
ATTORN EY
Sept. 17, 1946.
J. P. DE RosE
2,407,771
SEAT SUPBORT
Filed Aug._ 4, 1941
5 Sheets-Sheet 2
INVENTOR
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BY
JOHN P DEROSE `~
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ATTORNEY
Sept. 1,7, 1946.
J". P. DE Rose:
2,407371
SEAT SUPPORT
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Sept. 17, l1946.
J. P, DE RosE
2,407,771
SEAT SUPPORT
Filed Aug. 4, 1941
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INVENTOR
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. sept. 17, 1946.
J. P. lzuszRosE;`
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SEAT SUPPORT
Fßiled Aug. 4, 1941
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ATTQRNEY
Patented sept. 17, 1946
UNITED
' 2,407,771
STATES
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PATENT l. ‘OFFICE
2,407,771l
SEAT SUPPORT
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John P. De Rose, Albany, cani. »
_
Application August 4, 1941, Serial N0. 405,279 ,
8 Claims. (Cl. 155-14)
’I'he invention relates to an adjustable seat
elevations at the lines l 3-13 and lli-_.14 in _Fig
support, and embodies certain improvements over - s ure
9, the seat base being level.
n*
the disclosures of my U. S. Patent No. 2,179,085,
Figure 15 is a _fragmentary plan View of a por
and my U. S. Patent No. 2,298,351.
tion of the 'support vstructure at the right `side
A general object is to provide an improved
thereof.
’
"
i
seat mounting for height and/or angularity
and/or fore-and-aft adjustments of the seat with
In the embodiment of Figures 1 to Al0 inclusive,
features of present invention are disclosed in
respect to a fixed base of the mounting.
Another object is to provide a re-positioning
control such that only corresponding adjust
the structure of a seat unit which comprises a
seat 9 having a back Il] and mounted on an ad
10
justable support assembly which extends from
ments are permitted at the opposite seat sides.
ï a supporting surface II such as that provided by
A further object is to provide for a resetting of
a ñoor I2. ’I'he- seat 9 is of a usual upholstered
the position-determining elements with a min
type
having a bottom plate or frame I31 for direct
imum of manual effort.
mounting on the adjustable support structure,
The-invention possesses other objects and fea 15 the seat structure being rigid against distortion
tures of advantage, some of which, with the fore
' thereof. The present seat unit, while of gen
going, will be set forth or be apparent in the
eral utility, has been particularly designed for
following description of typical embodiments
its installation in a vehicle for use by an occu
thereof, and in the accompanying drawings, in
pant thereof.
which,
Figure 1 is a left-side view of an assembly of
a seat and its mounting embodying the features
of present invention and disposed on a support;
ing ñoor, the seat bottom being primarily shown
as level, with other adjusted settings thereof be
ing indicated in dash lines.
Figure 2 is a fragmentary upright section
through the seat mounting structure with the
seat tilted forwardly in one indicated position
of Figure 1.
"
Figure 3 is a plan view of the seat support
taken at the plane of the line 3-3 in Figure 1.
Figure 4 is a sectional elevation at the broken
line 4_4 in Figure 3.
Figure 5 is a front view of the assembly of Fig
ure 1, a major portion of the seat back being
broken away.
Figures 6 and 7 and 8 are fragmentary sec
tional views taken respectively at the line 8-6
and 'l-'I and 8_8 in Figure 2.
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IB and a ro'd I'I engagingboth pairs of members
I4 and I5 in a manner to support the former from
The members I4 comprise plate ele
ments of like size and outline having flanges I4'
- the latter.
extending transversely therefrom at their bottom
edges to provide ñoor bearings for the plates and
a means by which the plates maybe secured to
the floor I2 in relatively ñxed and mutually
parallel relation, as by boltsjIB. The members
I5 >comprise plates of like'size and outline hav
. ing transverse top edge flanges I5’ by which they
30
may be secured to the seat bottom I3, as by bolts
I9, for their simultaneous disposal adjacent and
parallel to the opposed inner faces of the plates
I4, said flanges being directed inwardly andV to
40 ward each other.
'
Figure 9 is an enlarged fragmentary plan sec
Near their upper edges and in front portions
tion taken generally at the plane of support of ‘l thereof, the plate members I4 are provided with
a seat-carried section of the mounting upon a
like sets of interior slots `2I which are laterally
ñoor-carried section of the mounting when said
spaced and extend parallel to the base edges of
sections are related as in Figure 1, said plane of 45 the members with corresponding said slots at
support being indicated at the line 9-9 in Fig- 1 .
like distances therefrom. At corresponding
ure 10.
points thereof adjacent the junctures of their
Figure 10 is a sectional elevation at the line
front and lower edges, the plate members I5
IO-II) in Figure 9.
are provided with transverse guideways which
Figure 1l is a left-side view of another em
slidably mount the catch-bolts IB for their nor
bodiment of the invention.
mal Ytransverse projection from `the plates Iii
Figure 12 is a view of the seat-supporting
into corresponding slots 2| 0f the plates I4.» The
structure of Figure 1l corresponding to the view
guideways for the bolts I6 comprise aligned
openings in the plates I5 and in end portions E2
Figures 13 and 14 are fragmentary sectional 55 of brackets 23 extending _rigidly from the inner
of Figure 2.
y
Essentially, the present seat support assembly
comprises a pair of base members I4 for fixing
to the floor I2 to extend upwardly therefrom, a
pair of members I5 for fixing to the seat‘bottom
I3 to depend therefrom, and a pair of catch bolts
~
2,407,771
3
sides of the plates I5, each said bracket having a
cylindrically curved arm portion 24 extending
above the bolt portion between the plate and
the bracket portion 22'.
An helical spiral slot 25 is provided ln each
bracket arm 24 and slidably receives an arm 26
extending rigidly from the bolt I6 and arranged
ative catch-bolts 34 to permit a fore-and-aft ad
justment of the seat with respect to the base pro
vided by the members I4 is arranged to be effected
through an appropriate rocking of a rod or shaft
38 which is journalled in and between the plates
I5 at corresponding forward and upper points
thereof. As particularly shown, radial arms 33
extend fixedly from the rod 33 inwardly of and
to engage the forward slot end as a stop under
adjacent the plates I5 and generally downwardly.
the influence of a spring 2l‘when the bolt isA
operatively engaged ina slot 2I of the base mem 10 from the-rod, and links 4I connect the arms 39
with the extending ends of the bolt arms 3l
ber I4; the arrangement is such that a suilicient
rotation of the bolt to move its arm 26 rear- l
' » Íwhereby a rocking of the rod 38 may simultane
ously withdraw both catch-bolts 34. Tension
wardly in the slot 25 will withdraw the bolt from
springs 42 extend between the arms 39 and an~
its operative position by reason of the sliding
engagement of the bolt arm 26 with the forward 15 chorages on the plates I5 forwardly thereof to
.constantly and yieldingly urge, through the links
edge of the slot 25, said edge functioning as a
4Il and bolt arms 31, the operative disposition of
» spiral cam. Such a rotation of the bolt to effect
its inoperative disposal is arranged toi be'ef-" the bolts 34. At leastl one end of the control
rod 38 extends beyond the adjacent base plate
fected by means simultaneously operative upon
20 I4 and ñxedly carries aradial arm 43 for use as
both arms 26 and hereinafter described.
a handle to effect a rocking of the rod 38 to
Near their upper edges and in rear por
simultaneously disengage therbolts 34 from the
tions thereof, the base members I4 vare provided
slots 33 of the plate; as shown, the handle 43 is
with interior openings comprising slots 28 ex
positioned opposite the left side of the seat 9,
tending parallel to the plate base and _at rlike
and the rod 38. is supported thereatby a bracket
25
distances therefrom, and the members I5 are pro
44 fixed to and beneath the bottom- seatL plate I3.
vided toward their rear ends with corresponding
It will now be noted-that the adjusted support
upright slots 29. The rod I'I is constantly en
of the back of the seatefrom the rod Il is ar
gaged through the mutually intersecting pairs
of slots 2‘8 and 29 for its lateral sliding through f ranged to be -effected through a device including
these slots, is arranged to be adjustably spaced 30 likestruts 45 >which are cooperative in a com
mon plane between the seat and block members
from the seat while extending freely through the
46 mounted on the rod and rotatably receiving
upright slots 29, and constantly bears on the
the rod I'I therethrough, and are angularly ad
lowerl edges of the slots 28 as the support means>
for the rear of the seat.
justable with respect to the seat bottom. At their
p
upper ends, the struts 45 mount rollers 4l which
are arranged to constantly bear against the flat
With Vthe support-bolts I6 engaged in- corre
sponding slots 2I>of the base members I4 and
under faces of inwardly directed bearing plates
48 fixed beneath the seat and comprising ex
is supported upon the base membersr I4 for its x > tensions of the flanges I5’ of the plates I5, and
fore-and-aft adiustment while maintained in a 40 the lower strut ends are pivotally ñxed to the
blocks 46. Mutually parallel gusset plates 48
set angularity and height relation to the support
and 50 connect the front- and rear edges of each
ing iioor I2. To provide for a maximum de
bearing plate 48 with its plate I5 and define
gree of fore-and-aft adiustment for the seat, the
the rod I1 engaged in the horizontal slots 28 of
the members, it will be understood that >the seat
slots 2l and 28 are of like length and have their
. between them a guideway in which the block 46
centers spaced as the line of the bolts I6 is hori 45
zontally spaced from the rod I'I. To insure equal
fore-and-aft adjustments of the opposite seat
sides, gears 3l are ñxed on the extending ends
ofthe rod I'I and constantly engage yracks 32 .'
ñxed Ion themembers I4 in parallel relation to 50
their rear slots 28, the rod being freely rotatable
and being cylindrical at its slot-engaging bear
ing portions to permit its rotation as the seat
is shifted.
`
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is secured and guided for its rectilinear adjust
ment withrespect to the seat. The arrangement
is such that the seat is raised furthest from the
rod I'I when the struts 45 are swung about their
pivotal connections with the blocks toward up
right positions thereof, and vice versa.
By particular reference to Figures 2 and 3 and
4 and 8 and 9, it will be noted that each block
46 is of general channel section having its sides
5I ’ parallel and intermediately connected by a
'
>Each of the plates I4 is provided with a similar 55 portion 52 which extends from the channel web
53 and is provided with a bore which receives the
set of openings comprising upright and'laterally
rod I'I for rotation therein. The strut 45 is
spaced interior- slots 33 intermediately of the
forked and has its unforked end pivoted tof and
sets of horizontalr slots 2I and 28, and catch
bolts 34 normally-project from the plates I5 to l > between the block sides 5I for thepswingingr of
engage a said slot for securing the seat in fore 60 the strut about an axis perpendicular to the
rod axis. The free fork ends receive the roller
and-aft adjustment. The bolts 34 are slidably
41 between them for rotation about a pívot pin
and rotatably mounted in bores provided in cylin
- 54 engaged through said ends. At their «outer
drical bosses or brackets 35 which extend inward
ly from intermediate points of the plates I5 near ç ' 'faces the block sides 5I are pro-vided with lon
their bottoms. The upper sides of the bosses 35 65 gitudinal guide ribs 55 which are complemen
tarily engageable in the channels of like and
are provided with’spiral cam'slots 36 which slid
oppositely-directed offsets 56 of the plates 49 and
ably receive arms 3'I which extend radially from
50, whereby the blocks are vguided by and be
the bolts 34 and engage theouter ends of thetween
the plates for solely rectilinear movement
slots 36 when the bolts are operatively engaged
, y
in corresponding slots 33 of the plate I4. The 70 to or from the seat which they carry.
Understanding that a swinging'of a strut 45
arrangement is like that for the control of the
to move the strut» toward or from an upright
bolts I6 whereby an appropriate rotation of. a
position while the roller 41 thereof supportingly
bolt 34 is arranged to effect an inoperative dis->
engages beneath ytheseat at av bearing platei- 48
posal of the bolt.
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thereon is effective to respectively raise or lower
The simultaneous release of the normally oper
75
5
the adjacent fseat `portion :with respect Lto Athe
ñxed "base assembly, `.means :are provided 'ïto :ad
`î'jh‘e dog to .for "from
, 'isteringqnotc‘hes ß1andnlì8.. iA compression spring
SI12 fisi engaged “,between'the lmember T10 ?and _a :seat
’justably ‘position and secure .each fs'tru't ffor ad»
justing “the seat height thereat.` "Preferably and
.fonîthe plate .f_5íto1constantly `Jirge and normally
maintain the operative engagement -Jof .the dog
as shown, the `strut :adjusting means `«is .arranged
to be 'simultaneously and correspondingly opera»
withra -ii’otch 26.8 o'f the .fbloc-k`> 46.
tive Lupon the struts -45 «at ìb'oth “sides- »ofA "the
lseat “in such a manner that A»the .supported rear
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». ¿Atrockshaft 13iisjournalled 'in'and 'between
:correspondingßupperi points <of :the depending seat ‘
seat portion `may be and remain 'level laterally
thereof -forall its adjusted positions.
6
:operative tpositioniinfi'eg
`:plates IE‘ßinterniediate their .lengths` and in fpar-`
:all'el A»relation 'to fthe rod`> 2H. j
‘14 ‘depend
-iixedly `:from the s`ha'ft‘13 inwardly of `and ad'
jacent the plates to clear the bosses 35 for‘the
:bdlts:34,rand Alinks 15 and `16 ¿respectively "connect
l
"Essentially, -the lpresent means for vadjustin
the angularity o‘f 'fthe struts »T45 »comprises `fa pair
v oîi‘ra‘ck ‘bars v51 extending ‘from «pivotal connec
tions with the diiîeren‘t vstruts ¿and "having 'the
the farms 1.11 kwith .the farms "26 of Ithe bolts T5 'and
teeth of their racks 58 constantly engaging op 3.5 -wtth‘bottom »points of thezmembers 10 which pro
posite 'sides 'of fa `gear-'58 ñxedlon' a -s‘haiït l¿Iii ‘which
‘is rotatably mounted ’on and ‘benea'th‘the seat
ybottom I3. As particularlydisclosed in Figures
`3 çand 4, the racks ‘58 -guidedly vextend into arrec
tangular casing ‘62 at opposite sides yof the gear :2.0
A59 `and‘with their teeth engaging "the gear with
in Ythe casing 4while >Ithe »backs of theracks ‘slid
ably engage the finner 'faces fof opposite lcasing
'sides 63. 'I'he casing B2 *is'ñ-Xed-to the 'seat bot
'.vide the :dogs 69.
arrangement "is such that
a mocking-.of :the `shaft ï1f3 ‘in ìone` direction `will
:effect ¿a rwithdrawal .of theîbo‘lts rl‘6, while a rock
iing .of 'the ` shaft -in the (opposite direction will ef
`‘ïfeet an `îinnpz-ir'ativc disposal .lof the dogs 69.
Headed ¿pins 11'1 Von the arm 14 `engage slots `18`
andv '19in-the links 115 and 116 respectively `where
fbyla rocking of ¿the shaft -13 to release the front
'.orLthe.back-ofïthefseat ßforlits'up or down :adjust
ftom I3 intermediately-o'f’its‘sides fto-disposefthe .1
rack and gear yassemblyfpara‘llel thereto, and the
en't does not simultaneously release the `rear or
. 'front of the seat‘éfor its adjustment.'
A
gear »s'haft 6| "is journalled in »and between 'the
opposed top -and bottom `sides of the casing 'in
the‘fcommon plane of adjustment of the struts
45.
In the present structure, the Pshaft 13 extends
‘beyond the left `:side .of ¿the seat lß'and carries an
arm 8l ñxed thereto and normally extending-up
‘Hinged connections are ‘provided between >the
with a knob 82 to facilitate -a manual >rocking `of
the armfand shaft 'to lselectivelyrelease the front
or back of the :seat 'in thedescrib'ed 'manner »and
as "desired, With the present arrangement, a
`rear-ward rocking of the arm 8l ‘is ‘arranged ‘to
«wardly'from theshaft, `said arm bein-g 4provided
rack ¿bars 51 and the struts »45; in the present -
instance, forks 64 fixed îon the ’bar ends »span
»eac'h rol‘er 41 andthe strut end‘thereat, »and re
fceive the rextremities of tïhe pivot pins l51H70 pro
vide the hinged `connection of the b’ars'and struts.
The rack Abars fareiormed with-odset portions 65
between the racks 58 land the forks V64 to provide
Yfor the engagement of their racks `at opposite
sides ofthe gear 59. Compression spi‘in‘gs‘ßô en
circle the bar portions between `their racks 58
and the offsets 65 land are operatively »eng-aged
between the casing ‘ends 1from ‘which the "bars
extend andseat collars 66’ adjustably ñxed on the
bars, said springs being -constantly »operative to
urge an ‘upward swinging of the -struts 45 land a
'
release theîrear of the seat‘for adjustment, while
a forward rocking lof Asaid arm releases the front
of the seat for 'its adjustment. As shown, the
‘support bracket 4.4 A'for -the .extending Vend ofthe
40 control 4rod 38 also Provides a support iorïthe
extending end of the shaft 113.
‘
‘
The described .common means which is pro
vided `by the shaft 13 ‘for >selective actuationy to
simultaneously `release ‘.the‘fsupport bolts I6 lto
permit aheight adjustment of :the ‘front of -the
seat or to simultaneously‘withdra'w the dogs «'69
raising of the seat with «a `toggle jack action.
to permit a height ¿adjustment .'of‘the backrof :the
Since the springs 66 constantly urge `a disposal
seatobvious'ly permîi'ts `the `release of the seat `for
ofA the ‘back 'of the seat in >`fully raised position
only one of said adjustments at `a :time Also,
when the ‘seat is unoccupied, 'and the weight of 50 since the 'seat'fis of :relatively `rigid structure :and
an occupant of "the lseat `may rforce-the seat-‘down
is constantly :supported "at :its ‘back 'in ‘parallel
'wardly‘against the resistance «of Athe springs sto an
relation to the support `rod 111, it is important’to
intermediate Aor fully ` lowered position, `means ‘ are
`note that ‘the front of the Aseat will remain Spar
provided'îfor positively securing the back fof the
>allel to ‘the common line of' the front bolts 4I6
seat in any one of a number lof adjusted positions
during any adjustment thereof, whereby to "in
with respect to the support base.
surefan even front or `rear adjustment ’of vthe ‘seat
with V.respect ‘to ‘its two sides.
¿In the present instance, 'a 'means for ‘securing
theback of the seat at a desired adjusted‘height
Rather than 'depend on 'the application 4_of ,a
-is cooperative between the -blocks 46 v'on the shaft
person’s weight for setting the back of the seat
l1 and the plates l5 >which 'are fixed `to the seat
in adjusted position .against ‘the ‘joint :resistance
and mount the plates »49 and :50. 7More `spec’i?l
cally, the channel-like >offsets -56 -of the `front
guideway plates 49 are provided'with'correspond
ling transverse 4notches or >kerfs ‘61 across them,
the guide Aribs 55 of the blocks '46 engaging in
said offsets 56 v"are veach provided with a plurality
of notches 68 for vselective Áregistration ywithdif
ferent notches 61 as the plate |15 'is "raised‘orlow
`ered with respect to the Iblock, and a »dog 169 is
provided ’for engaging 'a 'pair of >registering
'notches "6»1 and `68 to :positively support the )back
ofthe seat upon ythe’rod l1. -Eachdog 69 is A‘pro
>vided at ‘the 'lower end ‘of va 'swinging member 1D
Awhich has its vupper end'mounted on ~-a pin' 41-I
extending from =the Aplate ~'4`9\ for Ja swinging of
of ‘the >springs v66, rmeans .are preferably uprovided
to positively 'actuate >‘the rack `bars 51 ito eiïect
`the fdesired adjustment when the seat vvis free lfor
vertical adjustment iwith ‘respect >to the ro'd 1|1.
As particularly illustrated, :the »shaft 6l for the
rack gear 59 carries a -worm gear V84 which is
engaged 'by a worm shaft 85 Ajourna'lled on the
under side of ythe casing 62 for-its turning to `
¿project or withdraw 4the rack bars 51 las ‘a pos
`fitive height ¿adjustment Ameans »for the back Vof
the seat. ‘Noting that the horizontal component
of the'supporting` reactionofthe struts :45 onthe
bars 51 may not rotate the worm shaft «B5 if its
thread pitch '-is low enough,'-the `described ar
rangement -ma-y itself securefthe »struts «'45 iin :set
2,407,111
angular-‘relation to theasupported‘seat for ad
justmentïonlyg- by turning the' shaft; the latter
isA assumed 'in the >present instance,v` whereby the
support dogs 69 and Atheir action and control
'z vA >spiral'slot |25 is providedln ,each bracket ’
arm |24 and slidably receives an arm |26 extend
ing rigidly'from the «bolt ||6 andiarranged to
engage fthe forward slotA end_'as a stop when the
bolt is operatively engaged in1a slot |2I ofr the
base member vI I4; the> arrangement isv such that-»a
As brought out in. Figure 3, the front end» of
sufficient rotation of the bolt to move its garm»|26
the-‘worm-shaft 85istarranged for engagement
rearwardly in the slot |25 will withdraw the bolt
byfa‘rha'nd crank .86 for its fmanuallturning with
from its operative position by reason of the slid
-ai high“ degree 'of mechanicaladvantage. ` In this
manner, the manual v'effort required for effecting 10 ing engagement oil-the bolt arm |25~withfthe
forward edge of the slot |'25.~ Such a `rotation
an adjustmentat'the rear of the seat is mini
'of the boltto effect its inoperative. disposal is
arranged to _be effected by a means simultaneously
:.«Meansmay be provided in the described seat
>might'be omitted.,_>
mized.;
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‘mounting structurelforso >limiting the raising of
«thefseat vabove the floorf as to maintain-the oper
ativeness of ,the .support elements to coact with
and between the'baserand seat. As particularly
operative against both bolt arms I261and.\herein- .
after
’ Thedescribed.
rear portions-of i the base
.
members
»
j' ,» I I4Y
i are
seat-carried plate |5.opposite the outer side-_of
provided with like sets of interiorslots |211- similai`
to the sets of slots |2I, the-latter slots »being
parallel to the former. At corresponding points
>bottom projection 89 directed toward'the plate
`>I4 Yand engageable with a projection 99" extend
with transverse guideways which slidably mount
ingabove it-from la top part of the plate' |-4 when ,
the bolts II'l for their normal Ítransverse projec
the seat‘is> raisedto »its desired limiting height,
tion from the plates I I5 _into corresponding slots
illustrated, a member 88 'depends fixedlyfrom the "
the Aplate | 4 and is provided with a transverse 20 Ythereof adjacent the junctures of their rear and
lower edges, the plate members |I5 are provided
the lprojection 90 being long enough in a fore 25 |21 of the plates I |5. _Brackets |23gsuch as those
which vmount'the bolts IIB are provided for the
and-aft direction toinsure its engagement` by the
bolts _I I'I and are provided with spiral slots î|25
projection 89' for vall settings of the seat.
receiving arms |26 extending laterally from the
f _ The-embodiment of Figures 1l to 15 inclusive
bolts II`| in the manner previously` described
»discloses` a seat unit which comprises a seat |89
`
`
having a back I I0 and mounted on an adjustable 30 for the bolts ||6.
_With the support bolts |,Iíì> engaged in» corre
support assembly` which is interposed between
-spondingforwardslots I2I of the base members
'it and a supportingisurface I | I such as that pro
|,|4»and the support bolts ||`| engaged incorre
vided by a floor I I2. The seat IGS has a flat bot
sponding rear slots |21 of. the: members, it will
ytorn plate I I3 which is mounted on the adjustable
` supporty structure, the seatl structure being rela 35 be understood that the seatis supported upon
tivelyrigid against twisting or bending distortion.
While of general utility, the present seat unit has
the base members I I4 for its fore-and-aft adjust- _
ment while it is maintained in a set angularity and
height relation to the'supporting floor ||2.- A»To
>also been particularly designed for its installation
provide for a maXimum~_ degree of fo-re-and-aft
“in a'vehicle, and comprises a pair of base mem
`abers; I I4._ for fixing tothe floor ||2 toA extend up 40 adjustment for the seat, the slots |2I and |21 of
their different sets are of like length and have
wardly therefrom, a pair of members II5 for i'lX
their centers spaced-as the line of` the boltsv | I6
ing to the seat bottom I I3 to depend> therefrom,
is horizontally spaced from the line of the bolts
andfront and rear pairs of bolts IIe and ||'|
each engaging a pair of adjacent >members I|4
I Il.
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and H5 at the different seat sides in a manner to
As in the first-embodiment, means are provided
support the latter members from the former. `The
members I lllfcomprise’plate elements of like size
and outline'having base flanges |I4' for seating
the‘opposite seat sides.> _ In- the present structure,
on the floor to which they Vmay be' secured as by
bolts IIS. VThe members |I5 comprise plates of y
likesize and outline havingY transverse top edge
flanges I I5’ at which they may be secured to the
seat bottom II3 by bolts or the like, said plates
being .disposed ‘adjacent and i parallel to the
interior face Vof the plates I I4'. ‘
In front portions thereof, the plate members l
I I 4 are provided with like sets of mutually parallel
interior slots I2I which are laterally spaced in
to insure equal fore-and-aft adjustmentsY for
Va shaft |28 is journalled in and betweenthe plates
H5 adjacent the seat and near the rear edge
thereof in -parallel relation tosaid edge, and the
extending shaft ends mount gears |29 lwhich are
arranged to constantly engage the teeth of under
lying racks I 30 -provided on rigid arms |3| pivoted
to the base plates I I4 adjacent'their upper front
corners for swinging, as »the back of the seat is
raised or lowered, about an axis which is parallel
to the axis of swinging of the seat on the front
support bolts I I5, the shaft aXis also being parallel
to the latter axis. The present racks |39 are
upright lines and extend parallel to the top
-edges of the members, it being noted that the top 60 provided at appropriate upper edge portions of
the arms I3I, andl means are pro-vided to insure
edges of the plates II4 are angularlyv related to
a constant operative engagement of the gears |29
the bottom edges of the plates and slope down
with the opposed racks.>4
»
wardly from their front ends. At corresponding
points thereof adjacent the junctures of ~ their
i As particularly illustrated-members |32 depend
front and lower edges, the Seat-carried plate'mem
,from and rotatively receive the shaft>|28 out
wardly of and adjacent the gears |29 thereon> and
4extend opposite .the outer faces of the arms |3I
bers' I |5 are provided with transverse guideways ’
which slidably mount the support bolts IIS for
their normal transverse projection from the plates
I I5 into corresponding slots |21 of the plate I I4.
' The guideways for the bolts I I6 comprise aligned _ 70
to so engage the arms as to prevent a mutual
separation of the >gears and racks` while permit
ting anadjusted positioning of the gear longi
openings in the plates` |I5 and in brackets |23
tudinally of the racks. The members |32 are pro
extending rigidly from the inner sides ofthe plates
„vided at their bottoms ywith outturned flanges
f |32' _which aredisposed beneath and adjacent the
_ I I 5, each said v bracket having. a cylindrically
, curved arm portion Y|24 overlying the bolt portion
`lower edges of strap-like. members I3I’ having
«between the> plate and its free extremity. _
. their extremities ñxed tothearms I3! and _having
__ _ _
>their intermediate> portions spaced from and co
operative with said arms’to provide guideways
in which the members |32 are slidable longi
tudinallyof the arms while the flan-ges |32' cooper
ate with the lower edges of the members |3|’ to
maintain the desired constant engagement of the
racks with the corresponding gears.
10
ment does not simultaneously release the rear`
or front of the seat for its adjustment..
In the `present structure, the shaft |46 extends
beyond the left side of the seat |89 and carries
an arm |54 fixed thereto and normally extending
`upwardly from the shaft, said arm being provided
with vakndb |55 to facilitate a manual rocking
of the arm and shaft to selectively ¿release the
Each of the plates | i4 is provided with a similar
set of upright and laterally'spaced interior sl'ots
front or back of the seat in the described manner
|33 intermediately cf the sets of horizontal slots 10 and as desired, With the present arrangement,
|2| and |21, and bolts |34 normally project from
a rearward rocking of the arm |54 is arranged
each plate ||5 to `engage a said slot for securing
to release the rear of the seat for its adjustment,
the seat in fore-and-aft adjustment. The bolts
while a forward rocking of said arm releases the
|34 are slidably and rotatably mounted in bores
front of the seat for’adjustment. As shown, the
provided in cylindrical bosses or brackets |35
support bracket |44 for the extending end of the
which extend inwardly from intermediate points
control rod |38 also provides a support for the
of the plates H5 near their bottoms. The upper
extending end of the shaft |46.
`
sides of the bosses |35 are provided with .spiral
Although vertical adjustments of the front or
slots which slidably receive arms |31 which ex
back of the seat |09 may be selectively effected
tend radially7 from the bolts |34 `and engage the 20 by withdrawing the bolts ||6 or Ill while man
outer ends of the spiral slots when the bolts are
ually supporting the freed front or vrear seat edge,
operatively engaged in corresponding 4slots |33
means are preferably provided for constantly urg
of the plate i i4. The arrangement is similar to
ing a raised positioning of the back of the seat
that for the control of the support bolts ||6 and
as an aid to positioning the same for the reen
H1, and of the bolts |6 and 34 ,of the first em 25 gagement of the bolts | |1 in corresponding slots
bodiment, and is such that an appropriate rota
|21 after an adjustment has been effected. As
tion of a bolt |34 is arranged, through the guided
particularly sho-wn, the means for urging an up
engagement of the arm |31 thereof in the slot
ward disposal of the Iback `of the seat essentially
of the boss |35 which carries it, to effect aninop
comprises a toggle-jack arrangement at each seat
erative disposal of the bolt.
end having links |56 and |51 respectively pivoted
The simultaneous release of the normally oper
to the base flanges l| I4' and connected .at a com
ative bolts |34 to permit a fore-and-aft adjust
mon pivot pin |58, and urged toward a mutually
ment of the seat with respect to the base provided
aligned relation in which the back of the seat
by the members ||4 is arranged to be effected
would :be fully raised .by the action of' a spring
through an appropriate rocking of a rod or shaft
|66 which is appropriately operative with respect
|38 which is journalled in and between the plates
to said links.
i
`
| I5 at corresponding forward and upper points
The present links |56 and |51 are bipartite
thereof and inA parallel relation to the shaft |28.
and span an intermediate portion |6| of the pin
As particularly shown, radial arms |39 depend
|56 which is provided Vwith a diametral bore which
ñxedly from the `rod |38 inwardly of and adjacent 40 freely receives a rod |63 pivoted on a. stub shaft
the plates-l I5, and links |4| connect the‘arms |39
|64 at a rear point of the plate` | I4, said rod ex
with the extending ends of `the bolt arms |31
tending forwardly of the pin |58. A spring seat
whereby a rocking of the rod |38 may simultane
member|65 is adjustably mounted on. the free
ously withdraw both bolts |34. Tension springs
end of the rod |63 and an helical compression
|42 extend between the arms |39 and anchorages
spring |66 receives the rod and is constantly op
on the plates ||5 forwardly thereof to constantly
erative between the member |65 and a seat ring
and yieldinelîv urge, ,through the links |4| and
|61 mounted on the rod and engaging the link
bolt arms |31, the operative disposition of the
ends adjacent the pinV |58. The varrangement is
bolts |34.y At least one- end of the control rod
such that the springs |36 of the two toggle-jacks
|38 extends beyond the adjacent base plate ||4 50
and flxedly carries a radial arm |43 for use >as
a handle to effect a rocking of the rod to simul
are
jointly
and equally
A
operative to
urge' an '
upward raising of the rear of theiseat for more
than counterbalancing the supported seat Weight.
It will, of course, be obviousdthat the action of
the springs |66 is utilized only during an adjust
taneously disengage the bolts |34 from the slots
|33 of the plate; asshown, the handle |43 `is po
sitioned opposite the left side `of the seat |08,
ment of the back of the seat when the support
and therod |38 is vsupported thereat by a bracket 55 bolts |11 are inoperative, and the seat is sup
|44 fixed to and beneath the bottom seat `plate
ported upon the jacks through the arms» Í3| and
H3.
y
racks |39 and gears |29 and shaft |28.
Y
A rock shaft |46 `is journalled in and between
Means are provided for preventing the raising
corresponding upper points of the depending seat
of the seat |89 appreciably above the level .at
60
plates | I5 intermediate their lengths and in par
which `the :bolts | | 6 .and | |1 may respectively en
allel relation to the shaft |28. Arms |41 depend
gage the top slots 12| and |28 of the base plates
fixedly from the shaft 1.46 inwardly of the plates
H5. As shown, a member |68 depends ñxedly
to clear the 4bosses |35 for the bolts |34, and links
from each seat-carried plate ||5 opposite the
|48 and |49 respectively connect the arms |41
cuter side of the adjacent base plate I4 and is
with the arms |26 of the bolts ||6 and with the
provided with an inturned bottom projection |69
arms |3| of the bolts ||1. The arrangement is
which underlies andis engageable with a projec
such that a ro-cking of the shaft |46 in one direc
tion |19 extending from the top part of the plate
tion will effect a withdrawal of the bolts | I6, While
||4 when the desired limiting height of the sea-t
a rocking of the shaft in the opposite direction 70 is reached. The arrangement and stop action are
will effect a withdrawal of the bolts I |1. Headed
substantially identical with those for the members
pins |5| on the arms |41 engage slots |52 and
88 and 90 of the first described embodiment.
|53 in the links |48 and |49 respectively whereby
From the foregoing description of my inven
a rocking of the shaft |46 to release the front or
tion, taken in connection with the accompanying
the back of the seat for its up or down adjust 75 drawings. the advantages of the construction and
l2
il
'supporting it- from the base member, and
operation YwillV be readily understood by those
means on the seat operative against the strut
skilled in the art to which the invention apper
~tains. While I have described the features and
to dispose and yieldingly nx the strut in angu
larly adjusted position with respect to the seat
for providing a disposal of the seat at an ad
justed height with respect to the base member.
`5. A structure in accordance with claim 4
having a dogging means releasably fixing the
'use' of assemblies which I now consider to be
preferred embodiments of my invention, I desire
"tohave it understood that the showings are pri
marily illustrative, and that such changes may
‘be made, when desired, as fall within the scope
of the following claims.
‘v
I claim:
relatively adjusted guide members against rel
ative movement.
1
'
.
6. In combination with a seat, a seat-sup
- -1. Invcombination with a seat, a seat-sup
porting means comprising transversely spaced
:plate members supported in upright position
porting means comprising a base member> dis
beneath the seat in> fore-and-aft relation there
face, avseat support element supportedly Ven
gaged with said face for fore-and-aft adjust
posed beneath a seat in fore-and-aft relation
thereto and provided with a horizontal support
to and Aprovided with like sets of vertically
spaced' ‘horizontal slots, corresponding pairs
,of _laterally lspaced and horizontally disposed
front and rear bolts reciprocably carried by the
seat` and normally disposed selectively in slots
'of the' different plate members to cooperatively
ment along it, members on the seat and support
element telescopically engaged to guide the ele
¿mentv and'seat for a rectilinearly adjusted spac
20 ing thereof, a toggle strut hinged to the ‘guide
member on said support element and extending
support the seat from the members in iiXed an
obliquely upwardly to slidably engage the seat
gular and height adjustment while permitting
itsffore-and-aft adjustment,` rack bars pivoted
to said plate members at corresponding points
thereof >in generally horizontal disposition for
for supporting the seat from the element, and
.means on the seat operative against the strut
25
swinging in planes parallel to the members and
having their racks facing upwardly, a shaft ro
tatably carried by and beneath the’seat cross
ways thereof and above the rack-bars, gears on
Ísaid shaft engaging the different said racks, .,
i A'7.’In combination with a seat, a'seat-sup
porting means comprising relatively ñxed and
transversely spaced base members disposed be
neath’the seat in fore-and-aft relation thereto
and .provided with mutually coplanar horizontal
support zfaces, a support element supportedly
>andmeans operative to maintain the coopera
tive- engagement of the gears and their racks
'whereby the seat is restrained to like move
ments thereat during va fore-and-aft adjust
mentthereof.
f
‘
'
' restingiupon said faces and movable therealong,
complementary toggle struts hinged to the sup
.
`2. A structure in accordance with vclaim 1
having means constantly and resiliently opera
tiveçthrough‘the rack bars and gears and shaft
port element and> extending obliquely upward
to urge a raised disposal of the’seat.
3; In combination with a seat,r a seat-sup- L
:portingmeans'comprising a basefmember, a
support element supportedly engaging the base
'member at a ñxed level thereof, a toggle strut
'hinged to said element and extending obliquely
upwardly from its hinge point to a supporting
contact with the seat, means operative to vary
the» Obliquityv of said strut for the support of
the seat thereon at an adjusted height thereof,
telescopically engaged guide members carried
by ‘the support element and seat respectively
and cooperative to confine said element and
>seat to relative movement in a fixed line trans
verse to the seat, anda dogging means releas
vably operative between said ‘guide members to`
secure the seat at its adjusted height.
4. In combination with a seat, a seat-sup
porting means comprising a base member dis'
posed beneath- a seat in fore-and-aft relation
thereto, guide members on the seat and base
member telescopically engaged to guide the seat
for a rectilinearly adjusted spacing thereof with
respect to the base member, _a toggle strut
hinged tothe guide member and extending ob
liquelyV upwardly to slidably engage the seat for
to dispose and fix it in angularly adjusted posi
-tionwith respect to the seat for Providing a set
ting> of the seat at an adjusted height with re
spect to the base member.
Íly from their hinge points to» have their upper
ends supportingly and slidably engage the seat,
and means on the seat operative‘against the
struts at their upper ends and adjustable to
adjust-the mutual spacing of the upper strut
ends to change the Obliquity of`~ the struts and
thereby yadjust the spacing of the seat from the
element.
‘
. 8. In combination with a~ seat, a seat-sup-‘
porting means comprising a pair of transversely
spaced and relatively iixed base members dis
posed in opposed relation beneath the seat and
extending in fore-and-aft relation thereto, a
so pair of complementary upwardly extending ob
liquely ’disposed laterally spaced toggle struts of
equal lengthrlying in the same vertical plane and
each hinged toY a different base member for piv
otal movement-toward and away from each other,
said toggle struts having their upper ends sup
portingly and slidably engaging the seat, and
means including a gear and racks spanningthe
distance between and connecting the upper strut
ends and adjustable to move the upper strut ends
toward or away from each other to change the
obliquity of the struts and thereby,` adjust the
' spacing of the seat from the base members.
1 JOHN P. DE ROSE.
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