Патент USA US2133827код для вставки
Oct. 18, 1938. M. MILLER > 2,133,827 WHEEL ALIGNING APPARATUS Filed April 1.5, 1937 4 Sheets-Sheet l ATTORN E‘V 5 Oct. 18, 1938. M, MlLLER A 2,133,827 WHEEL ALI GNING APPARATUS . Filed April 15, 1937 4 Sl'leetS--Sheeí'I 2 lf 3. à' A ’mW/’IMM t'. ' ‘I l l my chew@ | B' ATTORNEYS Oct. 18, 1938. M. M|LLER 2,133,827 WHEEL ALIGNI'NG APPARATUS Filed April 15, 1937 4 Sheets-Sheet 5 L Michael/W MM35’ ATTORNEYS Gct. 1,8, 1938. M. MlLLER 2,133,827 WHEEL ALIGNING APPARATUS Filed April l5, 1957 4 Sheets-Sheet 4 ATTORNEYS _ 2,133,827 Patented Oct. 18, 1938 .UNITED sTATEs PATENT OFFICE 2,133,827 WHEEL AIJGNTNG APPARATUS Michael Miller, Trenton, N. J.' Application April 15, 1937, Serial No. 131,105 10 _.Claims. (Cl. 33-203) al I indicates a fixed base en_whichis pivotally This invention relates to an apparatus for gauging wheel alignments of motor vehicles and has for the primary object the provision of a V,portable device of this character on which a mo ~¿. 5 tor vehicle may be easily driven and which will mounted for a limited oscillatory movement a supporting member >2,-the pivot beingshOWn at 3. >The supporting member 2 has >journaled thereon rollers >I‘I which ride on the base l andthe os- .-,5 be self-adjusting to the Wheels of the vehicle cillatory movement of the supporting member ¿is and which will `permit a person or the operator limited‘by stops 5. kJournaled on the supporting of the device to easily and quickly determine toe, _member 2 are rollers 6 which slidably `support camber, and caster of the wheels and to indicate plates 1 and fixed to _said plates andrto the _pivot ¿l0 clearly and accurately when the Wheels have 3 are coil springs 8. The plates 1. slide-endwise 151.0 ofthe supporting member. androtatably sup ported on the plates ‘_1~ are ,turntablesv „79, anti friction bearingsl I_0 being providedbetween the been trued or brought into proper alignment. v With these and other objects in view, this in vention consists in certain novel features of con struction, combination and arrangement of parts 15 to be hereinafter more fully described and claimed. For a complete understanding of my invention, reference is to be had to the following descrip tion and accompanying drawings, in which .20 Figure 1 is a top plan view illustrating an ap paratus for the alignment of motor Vvehicle wheels constructed in accordance with the pres ent invention. Figure 2 is a sectional view taken on the -line 2-2 of Figure 1. . . Figure 3 is a fragmentary end elevation illus trating the device. ' Figure 4 is a sectional View taken on the line 4-4 of Figure 2. ' Figure 5 is 'a sectional view taken on the line 5-5 of Figure 4. . ' Figure 6 is a transverse sectional view taken on the line 6-6 of Figure 1. -l Figure '1 is a sectional view taken on the line . 5 1-1 of Figure 3. Figure 8 is a sectional View taken on the line 8--8 of Figureß. Y ` ` » Figure 9 is a fragmentary transverse 'sectional view showing an adjustable indicator.v k40 y Fig'ure 10 is a fragmentary vertical sectional view illustrating said indicator. ~ A Figure 11 is a fragmentary vertical view illus trating another indicator. ' Figure 12 is a plan vieW illustrating a scale f Í'plate used in connection with the indicator shown in Figures 9 and 10. a Figure 13 >is a plan view illustrating a scale plate. ' ' ' Figure 14 is a plan view illustrating another scale plate. Figure 15 is a > >plan` view illustrating another scale plate. y Figure 16 is a fragmentary top plan View illus trating the ramp used in connection with this in vention. . ' ’ " Figure 17 is afragmentary topplan view il lustrating a modified form of ramp. ” Figure 18 is a detail sectional View taken on .the line I8-I8 of Figure 3. v,6,0 Y Referring in detail to the drawings, the numer turntables and the slidable plates. Removable . pins Ilr are provided for releasibly securing the ¿1_5 turntables against rotation by engaging >,in open ings formed in the slidingplates. ' Any> rotary lmovement of the turntables is resistedby coil springs I2. Scale plates I3V are secured» o_nçthe supporting member and extend longitudinally thereof and the sliding plates carry pointers AI4 which cooperate with thescale plates. tok indicate the amount of sliding movement of the~sliding plates during the use. of the device. The scale plates I5’are secured on .the sliding plates> and cooperating "therewith are indicators I6 ñxed on Vthe turntables. The indicators’lBand scale `plates`r-I5: are for thepurposei of measuring lthe :movement o-f the turntables. ,Opposed indi cators I1 are fixed on the turntables and operate v30 in conjunction with-a scale> I8 of a scale plate I9 -suitably mounted on the base. The sliding plates vhave secured thereto opposed rackbars 20. geared together, as shown at- 2|, so that'movement of one ofthe sliding plates will beimparted tothe 35 other sliding plate.'> - ' .i ‘ Y Hinged _on the turntables are opposed tread '.»plates 22, Athe hinges therefor being indicated at 23. The tread plates normally assume positions, as shown in Figure 6, so that a >vehicle may be .£10 readily driven upwardly thereon.> When the Wheels of the vehicle'come to rest on the tread plates> they assume a dotted line position, as shown in Figure 6. a ' ` _ ' i Tire engaging plates 24` are pivoted on the .45 tread plates 22 adjacent’their opposiing ends to be engaged bythe tires of the Wheels,_and are provided with anti-frictionrollers 2i’.` >Hinged on the tread plates 2 are substantially lvertically arranged inner side> plates- 25 and have ls'lidably -50 connected thereto> T-shaped members 26 they be ing pivotally and slidably mounted on bracketsl 21 carried by the turn tables. The' side plates 25 Aare to engage Vwith the inner side. Walls of the ` tires of the'wheels of the vehicle and are in 55 >iiuencecl in engagement with said tires by coil l springs 28. The springs 28 are mounted on the T-shaped members between the head ends there of and the brackets 21. . Brackets 29 `arefixed on the turn-tables and 2,133,827 have mounted thereon outer side plates 30. Said outer side plates have a limited movement rela tive to said brackets by ball and socket joints, in dicated at 3|. Also the ball and socket joints ar'e‘ adjustably ¿connected onto the brackets 23 per mitting the outer side «plates «to be moved towards and from said brackets. Yieldably connected to the side plates 30 are face or tire engaging plates 32 and may be adjusted relative to the 10 side plates 30 by set bolts 33, one o’f -which has a scale 34 to aid in adjusting the face plates .at de sired angles to the side plates. It is to be under stood that the face plates of the side plates en gage with the outer Walls of the tires :adjacent 15 the lower portions of the tires, the spring iniiu enced inner plates acting to adjust the device so that the face plates contact the sidewalls of -the tire with desirable pressure. ’Gauge mountings '35 are rotatably -a-nd detach Yably mounted on the side plates '30 and integral therewith are sleeves 36 to adjustably support posts 31 -of fscribers 38. The scribers are adjust ably mounted `on the posts. Spring pressed »balls 39 »are provided for -securing -th'e ’posts -ì-n adjusted positions. Arms -40 »are lformed .on the sleeves 36 and have -detachably 'secured thereto Lgauge sup porting brackets 4I including ‘pivotally connected sections 42 and 43. The sections Í'42 may be ad justed relative Sto the sections 43 Land ìheld in `adjusted positions by set Abolts 44. Journaled =on the sections 42 are indicator casings 45 each ¿hav lng pivotally mounted therein :a weighted »pointer 46 operable «in relation Ito a .scale plate 41. The casings `45 have the scale plates 41 adjustab’ly mounted thereon `and may- be held .against :move ment by pins `48 »ñttingvinop‘enings of the casings. Finger pieces 49 are .secured `:to the 'scale plates whereby said scale plates may be rotated when nrst moved 'so as to disengage .the Apins trom the l'41) openings in the casinga Theiscale .plates fare of substantially ‘triangular lshape and vhave .gradua ïtion's >along the edges thereof. The .pointers "46 operate in conjunction with .the 4g-raduation's 'on the vscale plates 41. 'The .set :bolts »44 '.ïpermit the 115 casings 45 of the vindicators :to be adjusted Ato bring .said `casings into Avertical position. The Iscale plates 41 _and the pointers "46 are employed ¿for obtaining the caster and camber »of Wheels o'f .a motor vehicle, While the toe ‘of the wheels lobtained through the turning fof Athe turntables with their indicators I1 operating over the scale I8. ' Secured 'on the tread plates :22 adjacent `their ‘outer ends are upstanding socketed members 49' to removably receive -chocks -50 yacting to -prevent the vehicle from rolling off of the tread ‘plates yduring the use of the device. Certain'of `thesock eted members form posts for the -innerside _plates 25 to hinge on. When the device is *non-occupied Leo by the vehicle, the tread plates 2,2 «assume the po sition shown -in .full lines -in Figure 6 andare sup ported a slight distance from the -ifloor »on which `the device rests >by springs «5I and AWhen'not en `gag'edßby Wheels of a vehicle they -`may move :dow-n into engagement with theiloorfso that the -vehicle vmay lroll upwardly 'on to the device. fAs the wheels yof the vehicle `come to rest on the ytread engaging pla-tes 24, the tread plates :22 -‘assume the dotted fline position vshown iin Figure >6 with ro «their vadjacent; ends resting upon the :turntables --As the wheels roll :onto the itre'ad .plates and kthey Vfassume the dotted line v»position Vfin Figure <6, lth‘e -inner and outer ~side plates ycontact fthe walls of the tires, as shown in Figure "2, «and zthe sliding Vplates adjust 'themselves to the >tread or track age of the wheels, the correct reading of the tread or trackage is given by the pointer I 4 on the scale I3. Prior to driving the vehicle onto the device, the front Wheels are elevated from the ground 'and markings are applied to the tires of said wheels, the .markings extending circumferentially of the tires and at the centers of the treads of the tires. With the tires thus marked and the ve hicle upon the tread plates and the bringing of the "scribers to align with said markings first at l0 the 'back of the Wheels and then at the front of the wheels Will adjust the outer side plates to the toe of the Wheels. The turntables rotating with lthe swinging of the outer side plates Will bring about a toe reading for the wheels by refer 15 ring to the pointers I6 vand scale plates fI-5, thus permitting the operator ~to accurately check the -»toe of the Wheels. To obtain -a reading of the camber .fof the wheels on the device, ‘the plates132 are adïjus'tedfto 520 assume an inclination corresponding to the wheel camber through the »adjustment ofthe fse't bolts 33 and 34. 'The butt 'ends or .non-pointed ends of the scribers are then brought îin'to engagement >with the'upper portions of the tires against >the 25 side Walls of the latter. The adjustment of the plates 32 -and the scribers as described 'causes the indicator casings to tilt at inclina-tions fcor responding to >the camber `of `the wheels `and ‘as the pointers Athereof are weighted and thescale plates of the casings moving relative to >fsaid Weighted pointers gives 'a correct reading fof 'the wheel camber. The indicator casings -when vmak ing the -camber readings `are .positioned las `~shown at the left hand side of Figure .2, that is, withîthe scale plates facing forwardly and the person -or operator making the reading facing the front tof the Vehicle. After obtaining a reading 'of the camber of the wheels and it is desired ‘to obtain a caster reading of the Wheels, the indicator cas ings 45 are adjusted to assume the position, as"40 shown at the right hand side of Figure 2, that is, the scale plates Abeing read by the operator stand ing facing the side of the vehicle'. The indicator Vcasings are then adjusted >to bring about a îzero reading upon their scales by opera-ting the ad justing bolts 44. In other words, the indicator casings are brought to >assume vertical positions Ito obtain the fzero reading.V The indicator cas ings are then turned to face rearwardly -of vthe ve hicle. The wheels of the vehicle are then -steered to the right and then to the left and with the operator standing first l«at one side and then at the other side of the vehicle to note the caster of the Wheels by reading the positions assumed by the Weighted pointers on -the scale plates -4-1. .55 Whenever it is desired to- lock the turntables against rotation in either direction, »the -pins II are brought into the openings of the sliding tables or plates 1. The sliding plates 1 and the turn tables mounted as described will .permit .the 60 tread plates to readily adjust themselves prop erly to the trackage of the wheels as said wheels Íroll onto the tread `plates and as the Wheels come to rest on the tire engagingplates 24 they will permit the inner side> plates »to shift ther'sliding plates 1 so that the outer side plates engage the Vouter side Walls of the tires. The inner `side -plates being yspring pressed ywill readily bring about this adjustment. The inner side plates 70 may be termed presser .plates to bring about 'the last referred 'to adjustment. ‘ Figures f52 are .pivotally mounted on -the in dicator casings 45 and maybe positioned to par 'al'lel `sai'cïl casings -or to >extend» at «rig-ht angles ~Í 3 22,133,827 named scales, ramp plates carried bythe turn thereto. To obtain correct readings onrthis 'de engagedy by wheels' of a vehicle, »tables vice it is important that thetires of the Wheels t presser to’be plates carried by the ramp plates and contain the same amount of air pressure and in engageable with side Walls of tires of the wheels, order that this reading be obtained with the use « adjustable side plates carried bythe ramp plates 5 of my invention, either one Aof the indicator to engage Walls of the tires of the Wheels oppo casings is removed from the device and rested on site to the presser plates and adapted to be ad some part of the device and with one of the fm .,justed to incline in a plane corresponding to the gers occupying a right angle position to the camber of the wheels, indicators connected With casing is brought into engagement with 'the hub» and actuated by said adjustable side plates, and§l0 of the Wheel and the other ñnger brought> into Vadjustable scribers carried by the adjustable side engagement with the wall of the tire at the l'plates for cooper-ation .with markings made on lower porion of the tire. A certain reading» will the tires ofthe Wheels. Y Y .. then be given on the scale in accordance with , 3. A machine of the character set forth com the inclination of the indicator casing. -`Noting Y prising a base, an elongated supporting memberg 15 this reading and carrying out the same opera .pivoted on said base for a limit-ed pivotal move tion on the other Wheels the .operator can readily ment relative 4thereto and having scales, plates determine if the tires carry the `same air pres slidably mounted on the supporting member and4 sure. If not, the tire having the most air there movable endwise oi the latter andhaving lscales in can be deflated until its air pressure' agrees Vand pointers and said pointers movable' over the320 .first-named scales, turntablesv mountedbn said 20 with the air pressure of the other tires. Ramps 53 may be pivoted on certain of the plates andincludingpointers movable „over the tread plates and slidably> connected, as shown secondnamed scales, rampl plates vhinged ori-the at 54, and further connected by rack bars 55 . turntablesto be engaged by Wheels ofY a‘vehicle, geared together, as shown at 56. ` `The ramps v.tension presser plates carried by the vramp plates; A25 when engaged by the Vwheels will readily adjust 4to engage .with side walls of tires of the Wheels, themselves to the trackage of the wheels.V In vadjustable gauge plates carried by the vramp stead of having the rampsfadjustably connected plates to engage Walls ofthe tires .of the wheels together as described, they may be pivoted onto opposite to said presserplates and adapted to -a connecting bar 51 and each have a pin and be adjusted to incline in a plane correspondingfîfßo slot connection 58 to itsrespective tread plate, to the camber of the Wheels and pendulumtype 30 this form of the invention being shown vin Fig indicators connected with thel adjustable gauge , Aure l1. plates and actuated by the latter. The indicator casings 45 are rotatably and tachably connected to the sections 42 of adjustable arms 4I, as shown at 59. The justing arms 4l are detachably connected to arms 40, as shown at 60. de the ad the 4- A machine of the character set forth com i prising a base, an elongated supporting memberïßö pivoted on said base for a limited pivotal move» ment relative thereto and having scales, plates slidably mounted on the supporting member land movable endwise of the latter and having scales The tire engaging plates 32 being yieldably and adjustably mounted on the side plates 30 « and pointers and said pointers movable over theájáo will permit said side plates to be accurately ad 40 justed to the camber of the Wheels regardless Ainst-named scales, turntables mounted on said ~ plates and including pointers movable over the of defects occurring on the walls of the tires. second named scales, ramp plates hinged on the turntables to be engaged by Wheels of a vehicle, What is claimed is: _ ~ 1. A machine of the character set forth com tension presser plates carried by the ramp platea-45 prising `a base, an elongated supporting member `to engage with side Walls of tires ofthe Wheels, pivoted on said base intermediate the ends there adjustable gauge plates carried by the ramp of and having a limited pivotal movement rela plates to engage walls ofthe tires of the Wheelstive to said base and provided with scales ex oppositeV to the presser plates and adapted to be tending longitudinally thereof, plates slidably adjusted tor incline in a plane corresponding to,.50 mounted on the supporting member and movable the camber of the Wheels, pendulum ‘typeindi-J 50 endwise of the latter and having scales and -cators connected .with the adjustable gauge plates pointers with said pointers movable overl the and actuated by the latter, and means for ad ñrst-named scales, turntables mounted on saidv justing the indicators to bring them into perpen plates and including pointers movable over ,the dicular position. . . vi A I ¿K55 second named scales, ramp plate's'carried by the 5;.»A machine of the character set forth com 55 turntables to be engaged by wheels of a vehicle, prising a base, an elongated supporting mem presser plates carried by the >ramp plates and - ber pivoted on said base for a limitedîpivotal engageable with side Walls of tires of the Wheels, movement relative thereto and having scales, adjustable side plates carried by the ramp plates plates slidably mounted on the supporting mem-„60 -be-r and movable endwise of the latter and hav v60 to engage Walls of the tires of the Wheels oppo site to the presser plates and adapted to be ad ing scales and pointers and said pointers movable justed to incline in a plane corresponding to the over the first named scales,- turntables mounted camber of the Wheels, and indicators" connected on said plates and including pointers movable with and actuated by said'adjustable sideV plates. - over the second-named scales, ramp plates¿65 2. A machine of the character set forth com hinged on the turntables to be engagedby wheels prising a base, an elongated supporting member of'a vehicle, tension presserk plates carried by pivoted on said base intermediate the ends there the ramp plates to engage With side walls of of and having a limited pivotal movement rela tiresof the wheels, adjustable gauge plates'car tive to said base and provided with scales extend ried by the ramp plates to engage Walls of thes7,0 ing longitudinally thereof, plates slidably mount ` tires ofthe Wheels opposite to the presser plates ed on the supporting member and movable end and adapted to be adjusted to incline ina plane wise of the latter and having scales and pointers corresponding to the camber of the Wheels, pen with said pointers movable over the iirst named dulum type indicators connected with the ad scales, turntables mounted on said plates and justable gauge plates and actuated by the latter,y 75 including pointers movable over the second 75 4 `2,133,827’ means for acti-Listing the -indicators to bring .them into perpendicular position, and rack bars se »plates fand actuated .by the latter, means for ad cured to the >firstv named plates >and geared justing the indicators to bring them into per together. pendicular position, .ra-ck :bars secured to the ñrst named plates :and geared together, springs con =6. A machine »of the character .set forth ïcom nected on said ñrstv named plates., springs con- :5 prising >a base, an elongated supporting .mem .ber pivoted «on fsaid :base Afor 4a limited pivotal rnected fon vsaid ."turnftables, anti-friction means movement relative thereto fand .having scales, `between the .first named plates and the support .ing member, and Vanti-.friction means between plates .slid-ably mounted ~'on the supporting mem '10 ber and movable endwise of the latter land hav -’the »turntables and the ñrst-named plates. 9. A machine of the character set forth com- 10 ing :scales :and pointers 'and ssai'd pointers .mov Iable :over `the first .named scales, turntables prising a‘base, an elongated supporting member mounted on said plates and including pointers pivoted -on said :base for a limited pivotal move movable @over the second-.named scales, ramp _ ,ment relativeV Ithereto and having scales, plates plates hinged `on the turntables Yto be engaged :slida'blymounted -on ‘the supporting member >and by Wheels of 'a vehicle, tension presser plates vmovable endwise :of the latter and having scalesg’15 carried by the :ramp plates to engage with side 'and pointers :and -sai-d .pointers movable over the Walls =orf tires of thu wheels, adjustable ,gauge ñrst named scales, lturntables mounted on sa1d plates tcarried by the :ramp plates to vengage walls plates and .including _pointers movable over the of the tires :of the wheels opposite to the presser :second named scalearamp plates hinged Íon the plates and .adapted to'be Aadjusted'rto incline in a turntables to beengaged by wheels of a vehicle, A20 plane Acorresponding to .the lcamber of the Wheels, tension presser plates carried by the ramp plates lto engage ‘with :side walls -of tires of the wheels, >pendulum :type indicators .connecte-cl with the ad justable gauge plates :and actuated by the latter, adjustable ,gauge plates carried by the ramp 25 means foradjusting the indicators to bring them plates to'fenga'ge walls 'of the tires -of the wheels into perpendicular position, rack :bars Vsecured to opposite Jto the presser plates -and adapted to bex25 ‘the Iirst named plates and .geared together, and adjusted :to incline in :a1-plane corresponding to the `camberuof .the `Wheels, pendulum type indí springs connecting :said ñrst :named plates. cators .connected with .the adjustable gauge 57. ¿Amachine of the character `set forth com "30 prising :a base, an elongated lsupporting member --platœarrd actuatedby :the latter, means for ad justing the indicators to bring them into per-.n30 pivoted said -base ,for ya limited pivotal vmove ment relative thereto Vand :having scales, plates slidably mounted on the supporting ,member :and movableen'dwise fof 'the latter 4and having scales 'and pointers :and said pointers .movable over the first named scales, turntables .mounted on said 'plates and ¿including pointers .movable over the .second named scales, ramp plates hinged on the turntables to :be engaged by Wheels of a vehicle, .tension presser .plates carried by the ramp Íplates `to engage `.With side >Walls of tires fof. the wheels, adjustable .gauge plates carried by the ramp plates ‘to fen'gage `Walls .of the .tires of the wheels opposite to the presser ,plates and adapted to be 45 `adjusted to incline ,in >a plane :corresponding to ~’che camber of the wheels, pendulum type indi cators :connected with the adjustable gauge :plates and 'actuated ¿by the latter, .means Y'for ladjusting the indicators to bring them Ainto 4perpendicular position, `rack bars secured to the first named plates 'and geared together, :springs >connected pendicular‘position,.1rack .bars secured to the first named plates and geared together, springs connected =on said ñrst named plates, springs connected onrsaid turntables, anti-friction means between the ñ-rst-named plates and the support-‘,335 ing member, anti-friction :means between the turntables and the ñrstnamed plates, and auxil iary 'ramps connected ¿on said ramp plates. l0. lA machine fof the Ycharacter set forth com prising la base, .an -elongated supporting member@ pivoted on said base for a limited pivotal move ment :relativethereto and having scales, plates slidably mounted on the supporting member and movable .endwise xof the latter .and-havingscales .and pointers andsaid pointers movable over the¿ .-iirst named scales, ¿turntables mounted on said-plates ¿and 4including pointers movable over the >second .named scales, ramp plates hinged on the turntables tobeeng-aged »by wheels of a vehicle, tension ,presser plates carried by the ramp plates150 to engage with side walls oïf tires .of the wheels,l .adjustable gauge plates carried fby the ramp .-8. AA machine -of ithe character :set .forth com „plates to engage walls of the .tires of the Wheels prising a base, an elongated supporting member opposite to -the presserplates Tand adapted to be adjusted to .incline ina plane `corresponding to _ pivoted on said base for a limited pivotal .move ment relative thereto -and having scales, plates the camber -of .the Wheels, pendulum type indi slidably mounted on the supporting member `and cators connected >with rthe. .adjustable gauge >movable endwise of the latter and having scales ,plates and adjusted b_v the latter, means for ad and pointers and :said pointers movable .over .the justing the indicators'to bring them into per pendicular position, v.rack bars secured to the_„60 first-named scales, lturntables mounted -on said first named plates .and .geared together, springs plates land yincluding vpointers movable over the second named scales, ramp plates hinged on the connected on -said ñrst named plates, springs turntables to be engaged :by Wheels of a vehicle, »connectedfon saidturntables, anti-friction means tension presser plates carried by the ram-p plates `between lthe ñrst-named _plates and the support to engage with .side walls .of tires of the wheels, .ing member., anti-friction means between -thegß5 adjustable gauge plates carried by the ramp turntablesgand »the ,first named plates, auxiliary plates :to -engage walls of the tires of the Wheels ramps connected -on said ramp plates,l and tread opposite to vthe presser plates and adapted to _plates .pivotally and 'ant-frictionally connected .be adjusted to incline in a plane corresponding with the ramp `Aplates .to be engaged by treads -of the .tires -of :the wheels. to the camber of the wheels, pendulum type in MICHAEL MILLER. »ï’T 0 dicators connected with the adjustable vgauge on 4said first-.named plates, .and ¿springs -con nected on ysaid turntables. .