US1707197A - Hoisting apparatus - Google Patents

Description

March 26, 1929. R H, BEAUMONT 1,707,197

HGISTING APPARATUS Filed May 4. 1926 2 SheetsfSheet l March 26, 1929. R, H, BEAUMONT 1,707,197

HOISTING APPARATUS Filedl May 4. 1926 2 Sheets-Sheet 2 FIG. I,A

, WI TNESSES d6 1N VEN TOR:

Y B Y TTORNEYS.

Patented Mar. 26, 1929.

UNITED vSTATES `PA*1'r.1--f1T OFFICE.

ROBERT II. BEAUMONT, OF EAnNoE, rENNsYLvANIA, `Assistme To E. II. EEAUMONT oo., or PHILADELPHIA, PENNSYLVANIA, A CORPORATION OT PENNSYLVANIA. n

p HOISIING APPARATUS.

Application led May 4,

\ This invention relates to apparatus generally useful in hoisting material such `as sand, gravel, coal, ashes, etc., and more particularly to a type in which a skip bucket is employed as a means to convey the material to the desired levels for gravity dumping into cars, bins or other receptacles.

In hoisting systems of the kind specifically referred to, it has been necessary heretofore to employ double, and in `some instances, triple rails to guide travel of the skip buckets, as Well as more or less complicated switch mechanism to divert the buckets `temporarily from the main rails to lateral auxil iary rails for thepurpose of inversion and dumping at the desired discharge levels. Accordingly, such systems were very expensive to construct and install; and,1`furtl1er more, involved considerable outlaylfor maintenance due tov requirement for extensive lubrication of the numerousirails and associated switches.

The present invention isdirected toward overcoming the various drawbacks above mentioned; or, in other Words, toward enabling accomplishment of the desired func-` tions With a less expensive organization permitting use ofa pair of single rails to guide travel of the skip buckets from the point of loading to the point of delivery, and a very simple means to elfectautomatic inversion of` Vthe buckets fordumping at the discharge levels. i

The advantages of this invention Will be apparent from the following description of the typical embodiment'shown in the drawings, whereof Fig. I` shows a fragmentary portion of my novel hoistingsystein in side elevation. l

FigQII is a rear elevation vievvedas Yindi-V cated by the arrovvsII-II inFigJI. i

Figs. III, IV and V are `local detail sectional views taken as indicated respectively by the arrows III-IIL IVIV, and V`V in Fig. I.

Referringimore in detail to these illus'- t-rations, the numeral 10 comprehensively designates a skip bucketvvhich is characterized by a sloping mouth 11 at the top, the whole being constructed from sheet metal with appropriate structural "iron bracing to provide thenecessary strength and rigidity after customary practice. This skip bucket 10 is actuated by hoistingygear "Which includes a carriage 12 having a crossbarl at and III 4of the main rails 17.

1926. Serial No. 106,600.

the top Whereto is pivotally attached, at the and horizontal to suit special considerations of practice. From Fig. II it will be noted that the track 16 comprises a pair of single rails 17, 17 Which may be of any standard cross section, angle bars such as shown in the present instance, being employed for the sake of economy and structural lightness. In orderto be held to the rails 17, 17 the carriage 12 is equipped top and bottom with wheels 18, 18` and 19, 19 respectively, that are arranged in pairs-fas shown in I to engage opposite sides of the inwardly directed lateral flanges of said rails. The outer set 19 of thewheels is common to both the carriage 12 and the bucket 10, by virtue of being- `mounted upon a shaft 2O with which said bucket has pivotal connection at 21, 21 (Fig. II) for dumping, as hereinafter fully explained. In order t0 `nrmally restrain the bucket 10 against movement about the shaft 20, I provide it at each side of its upper end, With Wheels 22, 23 which, like the wheels of the carriage 12, engage opposite sides of the flanges of the rails 17, 17. It "tobe `particularly noted that the Wheels 23 are of substantially the same Width as the rail flanges, While the Wheels 22 arc considerably narrower for capacity to pass through out outs or recessions 211 inthe guide flanges of the rails 17 atthe dumping level, Where lateral rail offsets are installed for the purpose of supporting` "Fig I. From IV it `:vill be observed that the horizontal offset rails 25 are inthe form of plates which are secured, at the inner ends, to channel sections 26, in turn scoured along portions of the main rails 17. Suitable spacing blocks 27 are employed at `the junctures tobring the offset rails25 into a vertical plane midway of the active fianges At the back, the skip bucket 10` carries a pair oi. straps 28A which are preferably tashioned from stout' bar metal to the coniiguration shown in Fig.. I for capacity to serve as cams in cooperation with iixed abutment stops having the vtorni ot rollers 29 which are Carried byabracket frame 30 `bridging over l, cated aste engage the cams 28'just as the` .e upper wheels 23 of the bucket lll approach the vv the track 16. These rollers 29 areso allo- VVThe Ldumping action kis thus eii'ected automatically incidental to upward travel ot fthe Vearriag'jre12 along-the main track rails l?.

e f In 'order to limit rthe .tilt of the bucket V10 finY the event-oteXcess upward travel. 4during dumping, I provide it with hooked-tail pro- I jeetions 3l adapted to engagexwith the Aside "bars of the carriage12 in the manner indicated in Fide I. y f Y ij. Return et the bucket 10 to normal position after dumping is facilitated by guards 32 associatedwwiththe auxiliaryeoitset rails 25, v'said Vvguards being outwardly curved-as shown in Fig.. V-tocentralizethe wheels 23 relative to the track 16 in a manner obviousk from the illustration last referred to. j y YThe described organization is manifestly simple both with regard to construction .and

operatiom and, byreason ofits simplicity,

easy aswell as inexpensive to installfand maintain aS compared with hoisting systems heretofore existent.

Having thusydeseribed my invention, I elalm: Y l. yIn hoisting apparatus ot the character described, askip bucket with companion pairs of upper and lower wheels, a track with which all ot said, wheels normally engage to guide travel ofthe bucket,- and means co-operative with a fixed abutment bridging the track to forwardly displace the upper pair of wheels l temporarily fremsaidtrack and thereby effect non-gravitational inversion of said bucket'for dumpingaboutthe ,axis ot one lof the 'lower pairsk of wheels inc identalto continued vtravelofthevlatteralongthe track.

'2; In hoistingapparatus of the character l`describeda skip bucket withcompanion pairs `ci upperfand lower wheels, atraek with which ,l ``all`otsaidwheels normally engage to guide 1,',bueke't adapted to engage a fixedabutmentin travel'ot the bucket, a cam on thebacko the Ithe path ot travelto-forwardly displace the upper pair of wheels from the rails and there- Vbyedect' positive non-gravitational inversion ot' said bucket torjdumping about the axis of one of itslower vpairof-wheels incidental to eontinuedtravel ot `the latter alongk the track.

3. rInhoi'sting apparatus ot the character o f'describecba skip bucket with companion pairs i i 65 otv upper ,andlower wheels, a pair' of Y track rails having lateral flanges with the opposite faces ot' which said wheels normally engage lo guide travel of the bucket, cam means on the bucket (2o-operative with stationary abutments to eii'ect displacement ot the upper pairs of `wheels temporarily from the rail ianges and thereby permit non-giavitaional inversion of said bucket tor dumping` about the axis of a pair of its lower wheels incidental to continued travel ot the latter along the track, and means to limit turning nievement ot' the bucket during dumping.

4. In hoisting apparatus oit the character described, a skip bucket with companion pairs of upper and lower wheels, lil'ting gear aiterding the bucket pivotal connection on the axis ot opposed lower wheels, a pair o t single track rails having lateral flanges with which all of said wheels normally engage to guide travel of the bucket, said rails having offsets for dumping,'and cam means on the bucket co-operative with stationary abutmcnts to elfeet displacement ot its upper companion wheelssidewise from the track rails so that the lower ones thereof engage the oliscts ior support during non-gravitational inversion ot said bucket incidental to continued travel of ,Y thelower wheels along the track rails aforesaid;

5. In hoisting apparatus of the character described, a skip bucketwithcompanion pairs ot upper and lower wheels, lifting gear atfording the bucket pivotal connection on the Vcommon axis of a pair of lower wheels, a pair of single track rails having lateral flanges for the wheels aforesaid to guide travel of the bucket, said rails having horizontal oisets for dumping, cam paths on the bucket co-opcrate with rollers carried by a rigid bridge spanning the track to effect displacement et its upper companion pairs ot wheels sidcwisc from the track so that the lower ones thcreot traverse the horizontal oillscts for support during non-gravitational inversion oit said bucket incidental toy continued travel. of thc lower wheels along the track, and means cooperating with the lifting gear aforesaid to limit turning movement of the bucket during dumping.

6. Inl hoisting apparatus of the character described, a skip bucket, a carriage aitording the bucket pivotal connection at the lower end, a pair of single track rails having laterz: flanges to guide travel of the carriage alorcsaid, companion pairs ot rollers on the upper i end of the bucket normally running` on said rails, and a stationary abutment bridging the track and co-operative with 'cam paths on the bucket to elliect displacement of its upper companion wheels from the rails onto horizontalfoiisets for inversion about the pivotal connection with the carriage and dumping ot its contents. V

7, VIn hoisting apparatus of the character described, a skip bucket, a carriage having 10 the bucket cooperative with said rollers to effect displacement of its upper companion wheels laterally through cut outs in szticl reile onto horizontal offsets for inversion ol tbc bucket about the common exis of 'the cerrege aforesaid and clumpugits contente.

ln testimony whereof, l lieve hereunto signed my name at Philadelphia, Pennsylvania, this 29th day of April, 1926.

ROBERT H. BEAUMONT.

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