US1574271A - Turntable - Google Patents

Description

@wlw/v1 5070. WWMWQW Feb. 23 1926;

R. G. WILCOX TURNTABLE Filed Augst 15, 1925 3 Sheets-Sheet 1 Feb. 23 1926.

R. G. wlLcox TURNTABLE Patented Feb. 23, 1926.

UNITED `S-e're .rerum orifice,

RAYMOND G. WILCOX, 0F HANNIBAL, NEW YORK.

TURNTABLE.

Application led August 13, 192,5. Serial lNo.'59,037.

Be it known that L RAXMOND Gr,v lVlLoox, a citizen ot theUnited States, residing` at .Hannibah in the .county oi? .Oswego and lhis invention relates to iuipreveinents in turntables,.designed for useV in connection with the well-known pavers employed 'for concrete and other highway construction work.

The primary object ot the invention is to provide anovel and simple turntable, which may be connected directly to and rendered movable with the paver, the said table preiEN erably being` operatively disposed between the usual :torni-rails or curbs, which the lateral margins of the paving, and being rotatable in a plane aboye and 'clear-.ot said rails. A further object is toV r ovide a base upon which the table isjotatable, the said base being supported by rollers, by means of which the entire turning nieehailisin may beV trundled 'r'orwardly and backwardly between the oringrails o rniay be,

moved Yfrom one job to another, and said rollers tending to smooth and pack the newly excavated road-bed; the connections hetween the base and the said rolls eon'iprising springs, that are constructed and applied in a novel manner, to provide a tour-point resilient support for the turningl mechanism; the power et the said springs preferably heingso regulated that the unloaded turntable and base may be elevated and held above Iand clear ot' the roadbed, ltor rendering' said parts freely movable from one location to another on' the rollers; Athe said base being arranged to be lowered by the flexingot said springs until certain parts, rest upon the earth, when loads of concrete and `other paving material, which are Vusually carried by auto or other dumpftrucks, are `driven upon the revoluble portion of the-turning apparatus, `for preventing accidental shitting of the parts during'the turning and dumpingoperrations. A further object is to provide novel stop mechanisms, whereby the dump-truck may be. suitably positioned upon the table, and valso novel means Jfor locking` the table at the endl of each half-revolution, whereby the llongitu-dinal axesfof the base of theturntable.y Figi'. 3 p

vview ot the revoluble table, in which .dotted linesv show` al dunip-truck headed towards the paver, and ready to be turned tor table,the trilicl, and thepaver may be main` tained parallel to the for1nrails, while vthe trucks are being*V in oved towards and away troni the paver.

l attain these objects bythe means set torth in the detailed description which tol- 4lows, and as `illust-rated'by the`acco-inpanying drawings, in whichq lfiig'ure l is a top-plan 4view ot the coniplete turntable niechanisui; showing' its relation to "the torni-rails, `and to the skid'i of the prayer. Fig'. Q'is a similar view oit the is a top-plan etiecting the"diu iiping` et its load. Fig, 1 is a side'e eration'olj the conjiplete ti'irritable mechanism, theapproach, anda port-ion ot the paver, wherein full lines show the duniL truck at' the end et the turning` oipieration, and dotted' lines show the rear-wheels oit the truck backed on to ,the skili, and the tray tilted for depositing' the load in the skill.

'Frio'. 5 is a detail view showinq` the ineans tor locking the wheel-stops.

" l'n the drawings, repiesents s iniilarV spaced parallel 'tormerails or temporary curbs, which rare usually inadeiast to the level excavated ifoadluftl,` ttor gagging; the

breadth oil? tlie'strips ot c o'ierete or other road slniiacing'the concrete being' prepared by a. mining .machine or parer, of any suitable construction, oi" which only a portion. of the tiltable sliiti", or charginginenaber 3,' is shown'. Ordinarily the paving is laid in two or more parallel contiguous strips, the latter being 'usually formedseparately, and the rails 2, being` taken up and rela-id at intervals, as the paving` work progresses. The

paver, usually selt-propelled, is disposed between the rails 2, and is movedv forwardly, tollowingthe completion of each block ofi forty or titty feet of the paving. Thematerials for the concrete are usually prepared at some convenient ,distant point, and are then hauled to the paver by auto dump trucks, as 4, as best seen in Fig, 4. In the present ease, the dump-trucks, both when l loaded `and unloaded, traversethe space between theA rails 2, and approach th'epaver when loaded headon, as shown by dotted lines 'in Fig. 3, after which the vtruck turned end-orlend, as shown by the full lines. .in F 4, ready tor the dumping ot (see dotted lines in lI-beams. While extended end-portions 6iL rest upon and project beyond the tops ot the said beams. The ties 6 may be secured to the beams 5 by any suitable means, as by rods 6b. which may pass longitudinally through the ties. and transversely through l the Websot'the I-beams. as shown in Figs.V 1. 2 and 4. `The rear ends ot the girders 5-5' are preferably tied and spaced by a cross-bar 6c. which efe-operates With other parts.. tor. supporting the forward end ot the ski'lt 3 during the.dumpingoperations. Between the cross-ties 6-6' is disposed the circular base portion ot the turntable. which tree rotation. in a Well-known manner.

preferably comprises a band or ring otmetal 7. ot greater diameter than the spacing ot the I-heams. Whose loWer lateral edges are preferably cut-away, as at 7' (see 'Fig'. 4) tor allowing the said edges to sink below the tops ot the beams. by which the band is .mainly supported. The central portion ot the band 7 is prete'ably anchored to the cross-tie 6. by bolts 7a (see Figs. 1 and 2).

A. timber or like member 8 extends longitu-r dinally and centrally across the band 7, to which it may be rigidly secured. in any Wellknoun manner. the said timber also being rigid to the ties 6 6'. Upon the member 8 is mounted a 'pivot plate 9, which is bored out coneentrically to the band 7 to receive a pivot bolt or pin 9'. which comprises the axis ot the turntable 10. Interiorly the band 7 is 'litted with angular Wood orinetal part-s 12. which may be held in place by any suitl able meansfas-fasteners'12'. as best seen in Fig. 2. These angular parts are provided mainly tor support-ing a 1 )luralit3T oit friction rollersl, which engage and support the underside ot the table 10,and permit its The rear-end ot the base'frame is reinforced by an angular' bracel 6d, `which is 1es19ecti\'fely secured to the Isbeam's 5-5' and the bar 6c, as shoivnfin Figs. 1 and 2. The entire Weight lotthe base. as Well as the superposed table 10 and related parts, is supported by similar trout and rear traction rollers 14, which normally rest upon the earth'. and afford means 'tor trundling or moving the turntable mech'- anismv 'from place to place. The rollers 14 vare connected to the cross-ties` 6 6'. by similar leaf-springs 15, as shown in Figs. 1, 2

1,574,271 i v i and 4, wherein the bases ot said springs are rigidly bolted to the said ties, while -their :tree ends-are fitted with bearings 15'. in which shafts 1.4"o'l'the rolls 14 journal. The combined tension oit these springs preterably such that the springs tend 'to litt and resiliently hold the, turntable-base a tew inches above andv'clearoil the earth when thetable 10 unloaded, as shown in Figli,

and bythe full. lines in 4, thereby la! cilitating the free moyement of the table and relatedpartsfin either direction longitudinally. Thel springs 15 yield, When the normal Weight ofthe turntable mechanism is augmented bythe Weight ofa truck-load y ot material, 'sutliciently to cause the I-beams 5h53' to make firm contact with the earth (see dotted lines Fig. 4l, by 4Which the greater portionbt the Weight` ofthe truck and its load is sustained. This Atends to relieve thesprings andthe bearings 15' ot all abnormal and injurious strains and prevents accidental shittingot the turning mecha` nism during the dumping` operations. The

medial portionsvof the springs 15 are preterably supported by transverse bars 15, Whose opposite ends normally rest upon the tops ot the I-beams 5 5'.v the said bars being connected to the springs by stirrups 15C.l and the said bars being adjustable vertically bi."

means ot set screws 15d, by means ot `which the springs 15 may be raised and n lowered ttor correspondingly varying the clearance betweenthe bottoms otl the I-beams and the road-bed.

which are vsupported by the cross-ties 66', and produces virtually a cantilever effect, Which is desirable. The turntable. base is preferablyconnected to the running-gear ot the paver, by means ot a rod or coupler 16.

-the vtorivar'd end of the latter being shown pivoted to the rear tie 6, by means ot eyebolt 16' (seeFigs. 1, 2 and 4).

The turntable proper consists ,of a circular body 10, which may be Wood or other" suitable material. and is preferably enclosed and lirmly bound by an annular metal part 10. Upon the bottom tace ot the body 10 is secured a pivot vplate 10, similar to the part- 9, which is also perforated to receive the pivot pin 9', around which the table revolves. The pin 9' maybe held in place by any means, as by aA key 9a, which passes througha slot in the upper end of the pin, as shown in Figs. 1. 3 and 4. At thegtorward andrearivardsides ot 'the table 10, I provide notched lugs or projections 10C. which are arranged to be successively, engaged by a tooth 17'o a tension controlled latch-bar 17, for locking and holding 'the table at the end of each halt turn, as shown in Fig. 1.

. The outerfendof the latch-bar is pivoted to ,a support,17aroarred by'eross-bar, 6, by a. pm 17". The latch 17 is released for per- The bars 15a also tend to lessen ythe strains upon the bases ot the springs asy ll (l Vwhen the table isturned.`

.tentati initting the table l0 tobe rotated, by a rod 18, which is shown rockably*supported by. oye-bolts i8', the latter `being secured to the tie (i. The inner 'end le. of thee rod 1S bentupwardly and passes loosely through the eye oit a rod llt), the said rod passing .loosely through thesaid cross-tie and connecting with thel latch-bar 17, whereby .the rocking ot the ,rod 18, ,by the `depressing ojt' a pedal 18C formed on the outer endot' said rod, swings the ytree end ot the latch-bar 17 away from the lugs lO, and allows the table l() to be rotated. A, spring-.bar 2D, mounted horizontally near the opposite lend ot the tie G and engaging the 'tree end ot the latch-bar exerts a constant tension. tor moving the latch-bar towards the `table, when the pressure on .the pedal. 1S .is relaxed, so that the latch isnormally held ready to snap into the radial notches olf-the lugs 10F, Tron the tabl@ l0 is rigidly mounted parallel channelshaped tracks 2l, which support the dumpytrucks il. These tracks are'preterably directly supported by curved slgacers 21, which aie secured to tlie'topside or' the table, by screws 21a; the said tracks being heldl in place by bolts 2lb. The opposite ends of the tracks project beyond the body l0, and are preferably tiedtogether by crossbars 2l, which are secured by rivets 2121. The .ends of these bars project beyond the tracks 2l, and are perforated to receive the ends of similar guyrodsv23, which prevent the ends of the tracks 'from springing downwardly under the stress of tlieloadeld trucks.

The medial portions of the guyfrodsare pret erably eleyated and supported yby the upper enflsof spaced angle-iron posts 23", the Said posts being suitably supported by theqbody l0.' Each rod 23 may be made in twosections, which may be connected Vand rendered adjustable Aby means ojf .turn-buckles 23:1, as shown in Fig. 1. The outer sides ot the tracks 21 are reinforcedby elongated plates 2l, which pivotally support simila'rstops v 25--25, the latter, being arranged -to be swung inwardly across the'troughs oi .the

tracks 21, in the paths of the truckfwheels, ttor blockingthe progress of the trucks, and when the stops are in the latter posit-ion, notches formed in the under edges ot their vcurved handles engage stationary latches 24;

supported by said plates (see Fig. 5'), for locking the stops against accidental release. The operator ot the turntable usually stands near the pedal 18e, and within convenient reach of the stop 25 (see Fig. 3). lVlien the truck t is driven upon the turntable 10 lieadon, as shown by dotted lines in Fig. 3, immediately the `forward truck vwheels pass the middle of the table, the operator swings the stop 25, for example, inwardly in the path of the corresponding rear-wheel of the truck, for stopping the truck, after which truck il is nent backed towards the' payer untilits rear wheels drop troni the tracks 2lv .into the skill 3.' The tray il! ot the truck is ,then .tilted in thedire'ction for depositing its load inthe skiii, as shown `by dotted lines in Fig. it, 2G representsthe usual approach `whit-li is preferably ,pivotally `connectedto the I-beams 5 5 by links 2.6 (see Figs. l, 2 and 4s). The approach iiiay be moved `(Wer the `roadbied with the-tuintable vas the `paving progresses,and 'for this purpose au shoe 26L is mounted on the :trout underside of, the approach, as shown in .F et.

' My invention is extremely simple. The

novel construction of the turntable carriagel or base, by which a relatively narrow andl.`

elongated support suitable for operative disf posa'l between the closely spaced form-rails or curbs 2 l(this space is usually 8-9 feet) may be provided the mounting resiliently oit the .turntable mechanism upon theV traction rollers 11i, by Vwhich the entire mecha-k nism supported whenl unloaded above `and 4clear of the roadbed, and maybe trundled in dillerent Idirections between said rails,f by direct connectionv with the paver, vat will, and the mounting of the turning member l0 upon itscarriage in such manner Vthat it i ,may be rotated, whetherthe tableis loaded or unloaded, in `a plane above and clear-of the forni-rails, thus `obviating lall danger of disturbing `or weakenngthe setting ont the said rails are theinaterial and noveliea tures to whichl lay4 claim, andu which, so tar .21s I am aware, have. never beenknown or use d. f

Havingthus described inyinvention, what y j] claim, is-` i l. The combination with a turntable and a carriage for supporting the table, ot' a plurality ol?v rollers for supporting and trun dling saidI parts from lplaceto place, and

Iiesi.lii1t means directly connecting ,said rollers with the carriage adapted to hold the carriage above and clear of the earth when the table is unloaded, said table and carriage adapted to gravitate and to become seated on the earth when a vehicle or other abnorinal weight is placed upon the table.

2. The combination with a turntable having spaced tracks for supporting vehicles, a carriage upon which said table is rotatable, means for locking said table after each half revolution thereof, mea-ns pivoted adjacent :said tracks adapted to stop the forward travel of the vehicles across said table, a

iio

apparatus from place to place, springs arranged in pairs, one pair for each roller,

for connecting said apparatus with said rollers, and means for adjusting said springs for effecting the elevation of the apparatus above the eartlnsaid springs adapted to flex by the gravitation of said apparatus towards the earth when the weight of the apparatus `exceeds the normal liftinoj power of said springs.

4. A turntable and a carriage therefor adapted to be operatively mounted between the form-rails employed for high-way cona struction, rollers for supporting and moving said parts over the roadbed between said rails, said rollers being constantly in contact with `and adapted to roll and level the roadbed in advance of paving and like work, and

'a plurality of 'springs foi-,resiliently connecting said rollers with said carriage, adapted to hold the carriage away from the roadbed while said parts are being moved l from place-to place.

'5. A turntable and a carriage therefor ladapted to be operatively mounted between the form-rails employed in highway construction, rollers yfor supporting and moving said parts over the roadbed between said vrails, said rollers being constantly in convtact with and adapted to roll and level the roadbed in advance of paving and like work,

aplurality of springs for resilientlyv connecting said rollers vwith said carriage, and means for regulating the power 'of said springs whereby the table and carriage may be elevated above and'clear ofthe roadbed table.

when the turntable is unloaded, said carriage adapted to be moved into contact with the roadbed when a vehicle is drivenupon said 6. A turntable for use in road construction, including a revoluble memberhaving lparallel tracks for supporting vehicles, an

elongated base comprising spaced parallel beams, cross-ties for connecting and spacing said beams, rollers disposed near the ends of and between saidbeams, springs rigid to the cross-ties rand pivoted to the axles of and comprising the sole support for the said rollers adapted to resiliently hold said base above and clear of the r'oadbed, said springs adapted to flex for effecting the firm seating of said beams upon the roadbed when truck loads of material are driven upon said member; i

7. A turntable for road construction work, comprising a' rotatable member adapted to support Avehicles loaded with paving and other material,l a rectangular carriage for supporting said member, rollers for supporting and moving said turntable from place to place, said rollers adapted to traverse the roadbed and to roll and level said bed, tension membersrfor connecting said rollers with the carriage, the combined power of said tension members being exerted'for lifting and holding said turning mechanism above and clear of the roadbed when no vehicle is being supported by said lmechanism, said turning mechanism adapted to gravitate and become firmly seated on the roadbed when a vehicle is driven upon said rotatable member, and means for` increasing and decreasing the lifting power of said tension members. v y

8. A mechansm'for turning dump-trucks during road construction, comprising a rotatable member adapted to support the trucks, a carriage uponwhich said member isrotatable, said carriage comprising parallel girders tied together by cross-bars, vtraction rollers disposed transversely between said girders, by which said mechanism may be trundled from place to place, means for connecting said l rollers with said ,cross-bars whereby said-mechanism may be resiliently supported above and clear ofthe roadbed, said connecting means adapted to yield when a dump-truck is driven upon said member suiliciently to eect the firm seating of the carriage upon the roadbed for preventing shifting of said mechanism during the turning and dumping operations.

Y In testimony whereof I lafliir my signature.'

' RAYMOND c. WiLcoX.

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