US1773746A - Drop pit - Google Patents

Description

W; NA ELL Aug. 26, 1930.

DROP PIT Eiled March 5, 1928 4 Sheets-Sheet l W. NAGELL Aug. 26, 1930.

DROP PIT 4 Sheets-Sheet 2 Filed March 5,1928

Aug. 26, 1930;

w. NAGELL 1,773,746

DROP PIT I Filed March 5, 1928 4 Sheets-Sheet 3 Peg Patented Aug. 26, 1930 v siren s WALTER NAGELL; oF- LRvEY; ILLINOIS, Assienon To WHITING conronernion, or I v HARVEY, ILLINOIS, A'oonrone'rionorinmnols p DROP'PIT I i epmie e s m n 5,

The invention relates to drop pits of the type used in railway shops. J One object of the invention is to' provide a drop pit with a drop table having ,tWo track sections of uniform gauge thereon each adapted to bridge the pit so that one of the track sections maybe operated into position to receive a heeledunit, such asa pair of drivers or atruck, so it maybe separated'iroin the locomotive or railvvay car and lowered into the pit, and so that a similar-unit for replace mentmay be placed on the secondLtrack-seetionin' readiness to be transferred into position for attachment. This makes it possible to transfer both units Simultaneously, transverselyof the vehicle, and hence to expedite the delivery of the replacement unit into posi} tion to be elevated into operative'connection with the vehicle. By providing a drop-table Lofthis character, the reinbval and replacing of such units will be greatly facilitated. j Another object oflthe inventionis to pro vide an improvedidrop-tab'le' for pits in'yvhich the table is adapted toxsupport'a pluralitypf track sections, with means for'securely -f ing'the table in its vertical mov 3 V p A still further object of the invention isto provide improved locking mechanismv for a drop tab'le of this type. 1 7 jf fij Otherobjectsojithe invention will appear f v h P fiQat ni The invention "consists in the several novel features hereinatterset forth'and more particularly defined by the clainisat the concluv sionhereo f. 1 T In thedrawingszjFig. 1 is a longitudinal section through a drop pit embodyingth'e invent'on. Fig. 2isa skeletonized plan of the drop table, parts being shown in section.

* 40 Fig.8 is a'transverse section on line 3 3 of;

Fig. 1. Fig. 4 is a section through one of the vertical guides for the carriage Fig. 5 is a planet thecarriageffor raising and lower- 'ing and transporting the drop ftabler Fig; 6 is a perspective of the pit and drop table. The invention is eXeniplified-fin ta shop jequiprnent comprising a series of uniform. gauge tracks A under which is formed an in- 7 e ectiilapit' i A dmp. le Fl Secured 5' thereon tt'vo'pairs of rail-sections "f.- These "f disposed underthe rail sections f'to supsections f thereon", in "registryTWith the V of the rails forming -twoof the tracks A;

- blocks ,Which rock shaft 12 ,WhlCli extends horizontally 1933 semi No. 259,157..

'pailS'fQf railsections f are of uniform gauge and the same gauge as the tracks A and each fonnsa-track section to bridge the pit, to be used interchangeably With ther' aforesaid tracks A. Both ofthese track sections are mounted on a single table F, so that they can be'simultaneouslyshifted vertically or longitudinally of the pit' and transverselyof the tracks; The droptable isbui ltupofI-beams port them, channel beams f?, a nd 'connecting beams'f flall of which are suitably and rigidly se'ciiredtogetherto form a rigidrec tangular structure. The table is provided I w '65 Withflooring f between the rails f and at the sides of the outer rail section toi'or n' aplatform overv newbie The jabl e is provi'ded with suitable locking mechanism to secure it in position to supportand'retain the. rail ends This table locking mechanism 1 comprises eight iba'rs f which are disposed approximate- 'ly-in verticalaligmnentyvith the rail sections 1 a I .3". The} outeiffends of these, locking bars are adaptedto project from the ends of the table into sockets Z which are'setinto'the jwalls of the pit to lock the table against vertical as Well astran'sverse movelnent tvhen desired; Each locking bar f is' slida'bly guided-in a pair} of are fixedly secured'between jon'eiof the Lbeamsf and a beam f? c'onti'gu onsf thereto. ijAll' of the locking bars 7? are simultaneously and conjointly operable by, a 'throu gh the beams 21ml f and is journalled therein." Four double-armed levers 15 a are fixed to shaft '12 and each of these levers isfeonnected respectively to,'a' pair of aligned, V 'locki'ngfbars f 'by ailpai'r of links 16 in such ini'anner that rotationof the shaft 12'Willsi} 'multaneously operate all of the bars f into their respective sockets Z orfsimultan'eously' retract them. Operating levers 19 are fixed 'to the outerendsof the shaftlQ respective; ly, so that'the-d'rop tableinayjbe locked or unlocked by the operator While positionedat either sideof the, 'dropitable. o

This exemplifiespa drop table equipped vvithe phfrality of tra'ck sections, andjin v 2 5 tional housings 7L which are fixed to the I motor htwhichis mounted on bars h fixedly which provision is made for locking the table adjacent the ends of all of the rails forming said track sections to secure properly the table to permit rolling stock to pass thereover. V

A truck G for transporting the drop table in the pit and between the tracks comprises a rectangular frame g equipped with wheels 9 to travel on rails g on the bottom of thepit. Thistruc'kmay be of any suitable construction and is preferably equipped with an" electric motor 9 and transmission gearing gtdriven by the motor, for propelling the truck audits load. V

The truck is equipped with a vertically r movable carriage H for raising and lowering frame of carriage H, so that by conjoint rotationfof gearsh 'the carriage and its load may be raised or lowered in the'pit. These gears are conjoiiitly operablebyoan electric secured to the frame of the'carriage H. Each gear [i is engaged by a worm. It? confinedlin the associated ho'using It A shaft h is fixed to two of the worms at one side of the carriage H, and a shaft h, fixed to theworms at the other-sideof said carriage. shaft h fisconnected to drive. each of the shafts [1 72] bya pair of bevel gears/t. "A belt hm, drivenjby the motor if, isconnected to drive the shaft it Motor ht is ofcthe reversible type, so that wheirthe gears h? are Toft ated in" one direction they will be operated to raise the drop table, and when rotated in reverse direction, they will beopferatedto lower the table." The carriage is foo adapted to engagethe underside of the droptableto support andlift it and istmovable ndependently of the table so it maybe lowered away from it whenthetabl'e is locked.

' When the drop-table is equipped witha plurality of traclcsections, it is important that the carriage "H should be moved rectilinearly and equidistantly to prevent cramping between the worm-gears [L2, and the screw-1 rods gFfF or :this purpose four guide posts 722) are provided; Each of said posts we is anchored in abracket mf. fixed to the frame g of the. truck G, and extends upwardly through a socketm which is secured to the underside of one pair of the beams h of the iframe of the carriage H. These sockets are free to slide verticallyon the posts m to guide the carriage Hvertically,

The operation iSas followsi When a pair mechanism.

7 pended claims, without spirit and scope of the invention 1 of drivers is to be removed from a loc0mo-- tive, or a truck is to be removed from a locomotive or car, the locomotive or car is run onto one of the track sections 7" of the drop table which has been previously locked in its position to bridge two of the tracks A. A pairjof drivers or a truck for replacing the unit to be removed will be run onto the other track section f of the drop table. If the truck is to be removed from the car, the vehicle is usually suspended by, and supported from, an overhead travelling crane. The truck or drivers to be replaced are then unlocked from the vehicle. Next, the locking bars 7 are retracted by amanipulation of one of the levers 19, and the carriage H is lowered to the bottom of the pit. The-truck with the carriage and drop table thereon is then moved transversely of the tracks A to bring the drivers or truck which is to replace the unit removed intoposition under the vehiclefor attachment thereto. After the wheeled unit has been attached to the vehicle, the bars f will be operated to lock the table substantially at track, level. In this position, the track section on which the replacement unit was shiftechbridges andcompletes the track under the vehicle and is operative to permit the vehicle to passthereover. VA characteristic and an advantage of a drop pit construction of the type herein disclosed is that only one shift of'thetabl'e is necessary to-complete the replacement operation and after such oneshift, the vehicle may be rolled away from the point of repair. The drop table may be operated above the track level if desired in making. helattachment ofthe wheeled'unitto the vehicle. V

'Theinvention exemplifies a drop table "which'is provided with two track sections to support theremoved unit and a replacement unit to expedite the removal andreplacement ofthe wheel units from vehicles, such as locomotives or "cars; also one in which the replacement unit maybe: placed onthe drop table in' readiness to be transported into position for attachment to the vehicle from which a like unit has been removed; also a drop table which is adapted to belockedadjacent the ends of all of the rails of two track sections to support properly the table so it will carry .its l'o ad; and also one in which 7 the carriage for'supporting and shifting the drop table is guidedby posts on the truck independently of the raising and lowering The invention is not to be understood as restricted, to the details set forth, since these may lie-modified within the'scope of the ap departing from the 7 I-Iaving thus described theinvention, what Iclaim as new and desire tosecure by Letters Patentfls; t I

1 In an equipment of the character de- "two tracks and to scribed ythe combinationwith a plurality" of tracks and anintersecting pit, of a droptable adapted'toberaised and lowered in the pit, extending across a plurality of the tracks,

2. In an equipment of the character described, the combination with a plurality of tracks and an ntersecting pit, of a drop table adapted to be raised and loweredin the I pi-t, extending across a plurality of thetracks,

track-sections to bridge be used interchangeably with such tracks, mechanism for locking and supporting the table in the pit,'a truck movable in;'the pit,oand mechanism mounted on the truck for raising and lowering the table. 3. In an equipment of the character described,'thecombination with a plurality of tracks, and an"intersecting pit, of a droptable adaptedto be raised and lowered in the pit, extending across a plurality'fof the tracks, and providedawith track-sections to bridge two tracks, mechanism for locking and supporting the table in the pit, a carriage seps arable from the table, for raising and lowerand provided with ing it, a truck movable in the pit, and'mechabridge two Ira-15 vice for conj ointly 'nism movable withthe truck for raising and lowering the carriage.

' scribed, the combinationwith of the character dea plurality of tracks and an intersectingpit, of a droptable adaptedto be raised and lowered in the pit and extending across a plurality of the tracks, and provided with track-sections to 4. In an equipment the ends of the rails of both track-sections for locking the table in the pit, a truck mov able in the pit, and mechanism movable with the truck for raising and lowering the table.

5. In an equipment of the characteridescribed, the combination with a plurality of tracks and an intersecting pit, of a droptable adapted tobe raised and lowered in the pit and extending across a plurality of the tracks, and provided with track-sections to bridge two tracks, locking elements adjacent the ends of the rails of bothtrack-sections for locking the table in the pit, a deoperating all of said ele ments, a truck movable in the pit, and mechanism movable with the truck for rai'sing'an lowering the table. 7

6. In an equipment of the character .described, the combination with a plurality'of tracksv and an intersecting pit, of a droptable adapted'to be raised and lowered in theit and extending across a plurality of the tracks, and provided with track-sections to bridge two tracks, the ends of the rails of both track-sections for locking the table in the pit, levers at the sides of the'table, each connected to operate all of table.

tracks, locking elements adjacent locking elements adjacent,

saidelements; a truck movable in thepit', and

mechanism movable with the truck for raising and lowering the table. I

7. In an equipment of the character described,'the combination with a track and an intersecting pit, of a drop table movable vertically inthe pit and transversely with respect to the track, said table being provided with rails forming two pairs of track-sections of uniform gauge and operative to bridge interchangeably said track, one of the track-sections being adapted, when in bridging position, to have a vehicle rolled thereover and to receive a wheeled unit from such vehicle,"the.other track-section being adapted 'to have placed thereon a like wheeled unit and to be moved, upon manipulation of the table, into registry with the track. so that i said like unit may be connected to the vehicle and the'latter rolled off the table, and mechanism for raising andlowering sai 8. In an equipment of the character described, the combination with a track andan intersecting pit, of a drop table movable verl:

.tically' in the pit and transversely with re- I spect to the track, said'table being provided with rails-forming two pairsof track-sections otuniitorm gaugefand operative to bridge interchangeably said track,one of the tracksections being adapted, when in bridging position, to have a vehicle rolle'd thereover and to receive a wheeled unit'fromsuch vehicle, the other track-section placed thereon,

moved uplon manipulation of the table, into registry. with, the. track s'othat said like unit may be connected to the vehicle and the latter mutate the table', a truck separable fromjthe table and movable horizontally in the V pit, ,mech'anism movable with the-truck for. rais- ,ling and lowering the table, and, means for locking and supportingsaid table in thefp'it' independentlyof said mechanism, a ';[9.1Inan vequipme 't of the character 7 scribed, the ,combin ation with. a otrack and 'anQintersecting pit, of a vertically in the pit and transversely with "respect to the v track, said :table being pro- 115 'horiZont'ally -in the pit, and -niechanism" movdrop table movable;

leat gimvapiaced thereon alike wheeled unit andtobemoved, uponmanipulation 'of the I p able with the truckfor raising and lowering the carriage.

spect to the track, said table being provided 7 with rails forming two pairs of track-sections of uniform gauge and operative to bridge interchangeably said track, one of the tr aclnsections being adapted, when in bridging position, to have a vehicle rolled thereover and to receive a wheeled unit from such vehicle, the other tra'clesection being adapted to have placed thereon a like wheeled unit and to be moved, upon manipulation of the table, into registry with the track so that said like unitmay be connected to the vehicle and the latter rolled off the table, a truck movable horizontally in the pit and provided with mechanism for raising and lowering the table, and guide posts whereby the table is guided vertically independently of the raising and lowering mechanism,

saidposts be ing supported by the truck. 11. In an equipment of the character described, the combination with a track and an intersecting pit, of a drop table movable vertically in the pit and transversely with respect to the track, said table being provided Vciatedpne for nected from the vehicle and on the other track-section away from said vehicle and the track-section on which the replacement unit has been placed into registry with the track under the vehicle sothat said replacement unit may be connected in place and the vehicle rolled off the table, and mechanism for raising and lowering said table.

13. In an equipment of the character described, the combination with a plurality of tracks and an intersecting pit, of a drop table adapted to be raised and lowered in the pit, asubstantially rectangularv truck movable in the pit, a carriage for the table, mechanism for raising and lowering the carriage comprising four screw threaded rods mounted in and extending upwardly from the corners of the truck, and four vertically extending guides for guiding the carriage during raising and lowering thereof, said guides being located atthe corners of the truck and assod one with the screw threaded Signed at Harvey, Illinois, this 25th day of February, 1928.

I WALTER NAGELL.

with rails forming two pairs of track-sections of uniform gauge and operative to bridge I interchangeably said track,-one of the tracksections being adapted, when in bridging position,to have a vehicle rolled thereover and i to receive a wheeled unit from such vehicle,

the other track-section being adapted to have placed thereon a like wheeled unit and to be moved, upon manipulation of the table, into may be connected tothe vehicle and the lat-.

"ter rolled off the table, a carriage separable from the table for raising and lowering the latter, a truck pit and provided with mechanism forraising lowering the raising and lowering mechanism.

" 129111 an equipment of the character-described, the combination with a plurality of tracks ofthe same gauge and anintersects in the pit and provided with rails forming two traclesections of the same gauge as the tracks and operative to bridge two of the tracksand to be used interchangeably there with,one, of the track-sections being adapted,

movable horizontally in the the carriage, and vertical' guides supported by the truck the carriage independently of registry with the track so that said like unit l V for guiding pit, of a drop-table movable vertically connectionofvthe unit to a vehicle over the a v other rtrack section and track, said table being shiftable"transversely of the tracks'to move simultaneously a wheeled unit discon-

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