US891140A - Elevator. - Google Patents

Description

FRANK H. BROWN @L PRED H.

BLNVATON.

2 SHEETS-SHEET 1.

40 elevator a cross bar 16 is secured t'o the body of the controller and to opposite ends ofthe cross vbar cables or analogous devices '17 are secured and pass over sheaves 18I secured on the outer surfaces of the up'perextremities of the standards l5, and from the said sheaves the cables pass downwardly to winding drums 19 on the opposite extremities of a shaft 2() supported by the said standards and having at one end a suitable crank handle 21 anda ratchet and pawl mechanism 22. By 'rotat ing the shaft and the winding drums 19 in reverse directions the controller or prop may be raised or lowered and correspondingly elevate or depress the carrier and its coperating means.

The l. elevator frame 23' is fulcrumed or movable at its lower extremity on a `shaft24 terminally engaging the side members of the base 1. vThis frame 23 comprises up er and lower iarallel angle bars 25 and 26 w iieh are braced and connected by suitable .latticework as shown and is similar in its construction to the elevator frames disclosed by the patents hereinbefore mentioned and partic-v ularly Patent No. 846,725. The frame 23 may be raised and lowered on the shaft 24 as a pivotal support and in accordance with the adjustment of the controller hereinbefore described and cooperating with said frame is an endless carrier consisting of a pair of sprocket chains 27 which engage sprocket wheels 28 on the shaft 24 and also other s rocket wheels carried by an upper shaft oI rum 29 connecting the upper extremities of the sides of the said elevator framevand similar to the construction at this point as disclosed by the aforesaid patents. The lower angle bars 26 are projected beyond the upper angle bars 25 at the upper extremity o' the frame and suitably shaped and braced to support a roller 30 which facilitates 'the'movement of a bag, boxr barrel over the upper end of the elevator and clear ofthe -Working parts including `the carrier. his

arrangement at the upper 'extremity of the elevator frame as -just explained Vfacilitates the projection of said ortion. of the frame just farenough beyonl the -point Where the carrier makes its return movement to practically deliver a bag or boxmfrom the carrier or the truck organizationncluded in the `latter without requiring manual assistance or' attention.

`" The levatorfframe and carrier structure (explained is butone preferred form of ar ra 'ement and isnot necessarily essential in the' details of construction enumerated o the tactical pera'tionof .theelevato'r asa whole. twill be, observed, however,` that the eleva# tei-.frame and ccrrierspecified 'afi-e 'of alight sandfdiirable-stnuc'lure" p d consequently advantageous not'only but intheoprodii'ction'o a oitableelevator.;

e lfie carrierccmpri-sing t e endless belts br 'elevator purposes., l

sprocket chains 27 is driven through the medium of the shaft 24 by the lmotor 4, suitable belting or other power-transmitting means being introduced between the inotor and said shaft.

veyer includes in its organization a truck The endless carrier or con- Ifeature which is arranged at intervals th rein yand comprises a plurality of cross slats 31 aving terminal guards or blocks 32 secured on the ends thereof, the slats 31 being attached to the endless sprocket chains or belts 27 by introducing in the latter a'plurality ofr links 33 provided with opposite securing ears or projections 34 riveted or otherwise' fixed to the slats 31 so that when the truck organization of the carrier is uppermost erin position to receive a bag, box 'or the like, the ears or' projections 34 will be positioned against the i under sides of the said slats. ganization also includes roller shafts 35 held in the opposite sprocket chains or belts 27 A' and terminally provided with rollers 36A which bear on the horizontal members of the angle bars 25 and 26 of the elevator frameto ease the movement of the endless carrier for conveyer and prevent the latter from sagging when loaded or projecting below the I lower 'portion of the said elevator frame. Three roller shafts 35 are shown in the pres- -ent instance, but it is obvious that this number may be varied in accordance with the increase or decrease of length of the truck organization... the particular links 33 to which the slats 31 are secured, are not essential to the practical operation of the truck organization and that' other links might be substituted therefor. It has been found by ractical experiment, however, that'this simplle'forngi'pf link is'ver `well adapted for the purpose. Each truc organization also basa foot brace 37 secured at one 'extremity to the opplosite endless sprocketv chains or belts 27, t e purpose of t e foot brace being to hold-the bag, box, barrel .or other parcel in place on the truck organization during ascent of the latter and It will also .be understood tha f I ice this brace, combined with the guards 32,

will be especially useful in providin a recepf tacle means for-positively holding a ag, box, barrel or other parcel on the endless carrier or conveyer and obviate an tendency either to backward movement of t e object elevated or 'lateral' slipping of the same.- Asili the Y,

atented structures A it will 'be notedl that the` endless carrier or conveyer is driven from the lower end of the elevator and that the said frame is adjustablel on the shaft 24' and unattached at any other.

hereinbefore referred to ,n 12C' point and hence said elevator frame and car-l ff grd;

rier, together with the t'ruck organizations,

may be raisedv and lowered without in the least interfering with the operation of the carrier` or Without stopping the motor. Furthermore the'haft 24 will'. be positioned close to the floor or ,rest on which the base 1 is disposed, .130

. tending s ats connected to a 'l `tending slats connecte r htroller 'and provided with devices for elevating and lowering the said controller.

5.1In an elevator of the class specified, a supporting means, an elevator frame fulcrumed on the supporting means and involving a carrier, a controller fulcrumed at its lower extremity on the supporting means and consisting of a body portion with flanged pulleys at its upper extremity and a cross )ar heldin fixer position below the pulleys, flexible devices connected to the opposite extremities of the cross bar, and means for windin and unwinding said flexible devices, the pul eys on the upper end ofthe controller looselyengaging the under side of the elevator frame. y

^ 6. In an elevator of the class specified, an elevatorframe, an endless carrier movable in the said frame and involving a plurality of connected links, and a car organization ar- Aranged at spaced intervals in tlie carrier and consistin of a plurality of transversely exortion of the links and rovided with end b ccks, the carrier links. etween the opposite terminals of the car organizations being unconnected in a transverse direction. 'y

7. In an elevator ofthe class specied, an elevator frame, an endless carrier vmovable in the said frame and involving a plurality of connected links, and car organizations ar ranged at spaced intervals in the carrier and consisting of a pluralit of transversely exto Aa `portion of the links and provided With endblocks and a -foot brace atone extremity, the links ofthe carrier between the terminals ofthe car or- V 'ganizlations being unconnected in satrans'- llongitudinally through the frame and involv ing a plurality'of links, and aoar organiza- '.tion arranged at intervalswithin the carrier and lcomprising a pluralityof` transversely extending shafts having rollers thereon and slats arranged with relation to the said shafts and rollers and connected to the links, the

the frame an-d involving a plurality of links,

and a car organization arranged'at intervals within the carrier and comprising a plurality of transversely extending shafts having" rollers thereon, and slats arranged intermediately with' relation to the shaftsv and I rollers and connected tothe links, the links being attached to the under sidesof theislats and the latter provided with end blocksprojecting upwardly above the rollers. i

10. In an elevator of the class speciiied, an'

elevator frame, van endlessl carrier movable in and a carorganization arranged at intervals within the carrier and comprising a plurality the frame and involvinga plurality of links,

of transversely' extending Ishafts having rollers thereon, and slats arran ed.interl mediately with relationto the s afts and i rollers and connected to the links, the links being attached -to the under sides of the slats jectin brace -In testimony set out hands 1n presence of two s iubscribin'g l. R. ",MINNIVEHILn n whereof we have hereuntoandthe latter rovided with end blocks roupwar ly 'above the rollers, aoot. eing also disposedV at one end ofeach l Acal organization.

Images