US1592069A - Elevating conveyer - Google Patents

Description

July 13, 1926.

A 1,592,069 L. N. BENSON ELEVATING COHVEYER Filed Sept. 29. 1924- 3 Sheets-Sheet 1 mutue-.--munir 1..-- n. 1

July 13 1926. 1,592,069

L.. N. BENSON nnvkrme couvaan Filed sept. 29. 1924 Sneet's-sneeta 31a/vento@ @Wwf `July 13 1926.

L. N. BENSON ELEVATING CONVEYER Filed sept. 29

1924 3 Sheets-Sheet 3 In/vento@ Patented July i3;

UNITE een..

ELEVATNG CNVEYER. I

Application filed September 2S,

his invention relates to elevating cons and is designed more particularly tor 'ng bones ot fruit from the lower lloor warehouse to an upper Hoor ot the same althorgh it may, ot course. be employed in other fields. The primary object of the invention is to provide a structure in which the boxes or other objects being raised will be held against4 tilting` during their upward movement and also will be held in a. level position while passing around the upper bight ott the elevating chain. Another object oit the invention is to provide means 'for the stated purpose which will be simple ann compact and easily operated.

The invention is illustrated in the accompanying drawings. in which- Figure 1 is a front elevation of an elevator embodying my improvements;

Fig. 2 is a vertical section on the `line Q-Q or Fig. 1;

Fig. 3 is an enlarged transverse section ot the upper end of the elevator;

F ig. 4 is an enlarged view, partly in side elevation and partly in section, of the mechanism shown in Fig. 3, and

Fig. 5 is a horizontal section on the line .5*5 of F ig. 1.

The trame ot' the elevator may be ot any desired or approved form which will possess the requisite strength and rigidity. It is illustrated in the accompanying drawings as consisting of posts or uprights 1 arranged in spaced rectangular relation and having guide rails 2 secured to their outer sides and extending the full length otl the same. The posts or uprights are connected at intervals by cross beams of any preferred l'orm whereby they are held ia the proper relation7 and these cross bars may be in turn connected by stay rods 3, as indicated most clearly in Figs. 3 and 4. Near the lower end ot the elevator trame is provided a. loading platform which is illustrated as consisting` oit rails 4 projecting forwardly from the frame and secured rigidly thereto and supporting rollers 5 upon which the box to be elevated may be placed and moved easily into position to be engaged by the platforms or litting members of the elevator. The loading platform, however, need not be secured to the elevator trame but may be built as a partot the floor of the warehouse and may be dispensed with entirely it its use be deemed unnecessary or other means for plac- S24. Serial No. ?'40,632.

aft (3 and upon the said "s 1 are secured "l" around which the elevate ing' conveyor chains S are triined. Upon the upper ends ot the uprin is ounted a shaft 9 unich is similar lo the shaut G and upon which are secured the sprocket wheels lll arranged in the same vertical planes as the resp/tive sprocket wheels T and about which the elevator chains are trained, as clearly shown. Vertical bracing bars 'l1 are preferably ent-ended between the shatts G and 9 so to impart additional i'c'lity to the trame and to support the shafts against bending under strain. Extending between the chains 8 and pivot-allyv attached thereto its ends is a rod 12 which constitutes the the ends ot' the carrier rod 12 0uide rollers 13 are mounted thereon, and these rollers, as shown most clearly in 5, are arranged to ride upon the inner faces ol' the rails 2 which are provided at the front and back of the elevator 'trame so that the carrier will f be guided during its vertical movements. ri'lhe rod 12 carries a shelj or support which may be ot any convenient or approved form and is illustrated as consisting of two substantially nF-shaped bars 14 having their sten'is titted to and depending below the rod and their heads disposed t *ansversely to the rod and projecting equi-distantly iu front and in rear ot the same, as will be readily understood upon reference to l? 4. The )ars 14 are disposed in vertical planes and, of course, are pa allel The lower ends ot the stems ot the T-shaped bars are connected by a rod 1 5 which extends laterally beyond the said stems and is equipped at its ends with rollers 16 adapted7 like the rollers 13, to ride upon the inner faces ot the guide rails 2. ri'he engagement of these rolls with the guide rails 2 eti'ectually maintains the stems ot the shelves in a vertical position 'Inn sprocket being loose upon t during the ascent or descent of the carrier and, therefore, an object, such as the box illustrated at 17, Will be kept level during the raising of the same from a lower floor to a higher floor, andvit may be here stated that the elevator' may be used to convey 0bjects from an upper floor to a loiver floor.

Secured rigidly to the cross rods l2 and l5 and n'efcrably arranged near one side of the elevator' frame is a segmental rack 18 Which, as shown clearly in Figs. 2 and el, is concentric with the rod l2 and defines-a semi-circle. Upon the shaft S) at the upper end of the elevator frame and arranged in the same vertical plane with the seggn'iental gear. l8is a pinion '19 -which is rigid with a sprocket. pinion Qlhthe pinion and the said he shaft and held against movement along' the same by stop collars 2l in an obvious manner.

il; driving shaft 2Q is mounted in the ele vater frame below the shaft l), and upon the countershaft is secured al sprocket pinion 23 about: Which and the sprocket 20 trained a chain 2li. Upon one end of the shaft 22 is secured a` pinion 30 which meshes With an internal' gear 3l which is secured upon the end-'of theshaft 9. 0f course. when motion is imparted'to the gear 31, the shaft 9 will be rotated and motion thereupon ii'nparted directly tothe elevator chains 8 so that the shelf. or. carrier will be caused to move up- Ward-ly or downwardly relative to the elevator frame. A band pulley 28 is secured upon the shaft QZand a belt 29 applies power thereto from any convenient motor.

The arms la which, in the present instance, areshoivn as constituting the shelf orcarrier, are so spaced that they Will pass bet-Weenthe rails l` of the loading platform andI a box placed upon the said platform at the end of the saine and iartlv iro'ectinw u To into the space between the front uprights of the elevator frame will be in the path of said shelf or arms passing around the lower bight ofthe elevator and then rising, as .vill bereadily understood. As the upward movement of the shelf continues, it ivill be brought against the bottoni of the box 17 or other objec' and, of course, will lift the saine'. The boxis maintained in a level position during' its ascent-by the engagement of the rolls 13 and 16 with the track rails 2, and it is to be noted at this point that the said rails havetheir upper ends disposed at the l'iorizontalplane of the shaft 9. rhe segmental gear 18 has a radius equal to the radirsl of the driving sprocket l0 at the upper end of the elevator. As the shelf reaches the upper endl of the elevator frame, the inner corner or endv of the segmental gear Will mesh with the spur pinion 19 and, as this pinion is being rotated idly upon the shaft 9 through the medium of the chain 24: and the sprocket 2l), it will tend to swing the segmental gear about the rod l2 as a center. lnasniuch, hoivever, as the shelf to which the supplemental gear is attached is traveling upwardly and vvill necessarily follow the path defined by the chains 8 to which the rod l2 is attached, the result of the engagement of the pinion 19 with the segment lll will be to nriintain the shelf in a level position during the entire period of its travel up over and then dovvn around the shaft 9. Premature discharge of the box or spilling of' its contents is thus avoided and the handling of the box is facilitated. By referring to Fig. el, it will be readily noted that the segmental gear vvill be in mesh T.vith the pinion lil din-ing` one-'half of a revolution of the sprocket l() so that the pinion ivill enter into engagement With the segment at one corner or end of the same and Will leave the segment at the opposite corner thereof. lhe arrangement is especially desirable in those instances .vliere the bor; or other object is received by fhe elevator at one side of the saine andremoved'therefrom at the op posite side thereof, as Where it is arranged and practically used to convey articles from an outside platform to an upper-floor of a building.

My apparatus is exceedingly simple in the constructiony and arrangement of: its parts and Will operate efficiently at all timos to maintain the object or box in a level position.

Having thus described the invention, l claim:4

ln an elevator, the combination of an elevator frame, guide rails thereon, a shaft mounted at the upper end of the elevator.. frame, sprockets on saidz shaft, elevator chains trained around said sprockets. a rod disposed between and connected With said chains, a shelf secured on said rod, a second rod carried by the shelf below thelirst rod. rollers upon bolh said rods adapted to engage the guide rails on the elevator frame, a pinion loose on the said shaft, a pendant segmental gear secured to the said rods and disposed in the same verticaly plane as the said pinion, a drii 'ng shaft mounted in the frame beloiv the .first-mentioned shaft, pinion on one end of said shaft, an internal gear en the endl of thn first-mentioned shaftn'ieshing With-said pinion, and sprocket gearing connecting the drive shaft With the pinion on the lirst-n'ientioned shaft.

ln testimony Vwhereof l my signature.

Lnvfis Noanan'r Benson.

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