US930685A

US930685A - Skip-hoist.

Info

Publication number: US930685A
Application number: US46732908A
Authority: US
Inventors: Philo A Orton
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-12-14
Filing date: 1908-12-14
Publication date: 1909-08-10
Anticipated expiration: 1926-08-10

Description

P. A. ORTQN. SKIP HOIST.' grumman rups nm. 14, mos. A

f Patented Aug 4 SHEETS-SHEET P. A. oRToN.

SKIP HosT. APPLICATION FILED DEO. 14,l 1908,

Patanted Aug. 10, 1909 4 SHEETS-SHEET 2. 5

rtaza.

P. A.- oRToN.

SKIP HOIST. PPLIOATION FILED 1120.14, 190s.

Patented Aug. 10 4 sHETs-SHBBT 3,

P. A. oRToN. SKIP HUIST.. APPLICATION FILED 1330.14, 19084 y 939,685. Patented Aug. 10, 1909.

4 SHEETS-SHEET 4.

mine/5596: Ihnen/far.'

een seit .kennis teeniesx reino s. ceros, censimenti, ILLiNoIs.

S-HOIST.

ne. gemeen'.

Patented. Aug. 1o, loos.

, of Chicago, inthe county of @ook and State v of Illinois, have invented certsin new and useful im rovementsl in Skip-Hoists, of

which the ollowin is e specicotion.

This invention re etes to hoists,end relates I particularly to' what are known es skip hoists gine and passing over-intermediete,sheavesy means for 'llling the ski-ps or buckets vof designed and ndepted for handling various( materials, ss coih coke, orefeshes, and the like, and comprising one or more siiflgisA or buckets movable in suitable :wright guide ways and adopted to he rsi'sediand lowered hy means of cables connected to said skips or 'buckets and to the drum of `:i hoisting en rotatably mounted et the"npper ends' of the guideways in which said skips or buckets move. l

Heretofore, so :tar es om swore, the

hoists of the type to which my invention relates, and the means for storting the hoisting engine, when it .is'desired to reisels skip or bucket, have been manuel controked., This method of operation req ires `thecorxstar'it attendance and attention di? one ,or more operatives for illing the' skips or! buckets and for-storting the hoisting' engine and is olojectionsble. onsccounto the expense involved and valso on account oclelsy snol loss of time due to insttention and slowness lon the mrt otA the operatives. I i,

Afili-"he primary object of the invention is to i rovlde s skip hoist of this type, which shell ,sutomatic in its operation, lrotlfi` as re-` gsi-ds the filling of theskips or buckets, and the starting ot thehoisting engine to raise the skips or buckets when full."

To this end my rinvention consists oi the` various features, combinations of eotures and details 0i construction hereinsiter described and claimed. l Y.

ln the accompartying; drawings, in which my invent-ion is fullyillustratedwliigure 1 is a side elevation of e double skip hoistfemhodying my invention. Fig. 2 is creer View thereoi Fig. 3 1s n View on en enlarged scale, similar to Fig-1,' of the bottom portion of my `improved hoist, showing' the means for automatically filling the skips or ,buckets and for starting thehoistingr eno/fine.v

Fig. i is a View, opposite tobigg. Z, also on an enlarged seele, of the pei-s shown in l* 1g'.

4showin the lever which operates the starting switches. Figl- 6 is on `enlarged side View of the up er e `d of e guidewoy showing the Ineens or uxnpinr the buckets, the 'limit switch losing 'omitted end Fig. 7 is e View, on en cinici-ged scale,\.o the upper end of s guide or ways, showing s' switch for cutting outl the hoisting engine when o skip or bucket reaches the upper limit `of its movement,

Reerrin nos? tothe drawings, 1 riesige, mites suits le supports, formed in which ere uideweyn formed, as shown, by channel ors'` Ada ted to run in the guideways 2 are skips or uckets 3, and et, said ski s or buckets being preferably provided Wit which engage said guideways. Said wheels or rollers ore preferably located in Vertical alinement between the centers of said skips or buckets and the sides thereof remote from the direction 'in which seid skips or buckets are desi ed to dump.

. The s ips or buckets Sandi are adapted to be raised 'by ineens of a suitable hoisting lengine, indicated et 7, with which they are connected by suitable cables 8 andv which pass over sheaves rotatably mounted adje cent to the upper'ends of the guideways Q. "To facilitate dumping the skips or buckets 3 and 4i, the cables 8 are connected thereto below their centers ofgravity, being prefer ably' connected tolbales 10, pivoted to said skips or buckets adjacent to theirbottoms, as shown, to the pivot studs on which the lower guide wheels or rollers 6 ere mounted,= lVith the descrihed'construction, it is el. vious that the. skips or buckets 3 and It will, I at l.ell times, he in 4condition of unstable equilibrium, and are maintained ,in upright position. only by engagement ofthe 'wheels or rollers Send (3 with the guideways 2, the upper wheels or rollers always'exerting o thrust in ythe direction in which said skips or buckets are designed to dump, hereinafter calledI a forwardA thrust, and the lower Wheels or rollers-6 in the opposite direction, hereinafter cslleda rearward thrust.

To prow J@for eutomaticolly dumpingthc skips or buckets 3 ond 4, when they come into desired position,A the front sides or flanges of the guidexveys 2 are broken :may oud nre extended laterally, as shown at ll. o l distance slightly greater thon the disifiucc 3. Fig;y 5 is a fragmentary perspective vie-w up'v per and llov/'er Wheelsior rollers 5 and 6,'

In* l t:

' they approach the upper limits of their 'niovenient, to cut-out and brake the hoisting r`vfhcels or rollers have pessed below the lembed st'lfl, commonly known as limit between the uper and lower guide wheels or rollers 5 an l 6. Thus, when the upper guide wheels or rollers 5 come to the lateral extensions 1l, the forward thrust thor'eof will cause said lup .er wheels ci' rollers to run out upon lateral eXtensions,' the rearward thrust ofk 'the lower wheels or rollers 6 causing them tix-follow the guide el' ways 2, soithat, as the hottoms of the skips or buckets are raised above seid lateralextensions il, the skips or 1ouckets will be in-f vented at an, desired, predetermined, angledY And reverse y, ss the skips orr buckets are" again lowered, the weight thereof will operste to return them to iuprightv iosition and to bring the upper wheels-or ro lers o again into engagement with. the guidewnys 2 shove the lower wheels or rollers 6. To prevent seid skips or buckets from becomingA iuverted in their aides, suitable means, not shown, are provi ed 'for maintaining the upper wheels or rollers' 5 out of engagement with the guideways' 2 until after the lower gaps or openings in seid guidewsys through which the upper wheels or rollers 5 poss into engagement with' the lateral ,track eX- tensions il.

Skip hoists of this generil type ere old oud well known, so that, as regards its gen-- erst struotmsl features audits operation, the hoist shown in the drawings will los readily understood by those familiar with the srt without e more detailed descriptionV thereof. y

My invention contemplates the use of any desired or approved form of hoistino' engine l', but contemplates controlling tie saune electrically Whatever itsl character. lu` the drawings, l have indicated e hoisting engine operated by means of an electric motor, the circuits of which are adaptedA to be controlled by suitable starting switches, indicated et 12 and 13, and by switches indiswitclies, adapted to he operated by move ment of theskips or buckets, preferably as engine and to kcut-in said' hoisting engine and to reverse the current through the crms.- l tur-cof the motor of the hoisting engine, es scid skips or buckets recede from the upper limits of 'their movement, Various systems of'electrical wir-ing adopted for thus controlling motors, in this und other arts, are now in common use and well known and can he' readily installed :by skilled electricians Without' a more detailed description thereof. lThe specific lcharacter of the electricsl wiring and connections forms. no port of the present invention and need not, there-`j fore, be described.` l f The material for .handling which the h 'ist is designed, is contained in e suitable hop-- '-22 scones per, indicated at 16, provided with spools or chutes i7 adopted to discharge into differentskips or buckets, when said skips or buckets are at the 4lower ends ofthe guide- 'ways 2. its the invention relates to rendering :i skip hoist of this type automatic in its operation, as regards filling the skips or buckets, the construction of my improved hoist is us follows: ln a double skip hoist, like that illustrated, the controlling'means ore in duplicate for each skip or bucket. A description of one set of controlling; means' will therefore suffice and the accompanying description is accordingly in the smgula'r. Euch discharge spout 17 from the hopper 16 iscontrolled lay s suitable gate 18 which is maintained normally closed .by suitable means, es by a Weight applied thereto. As shown, Suid gate is pivoted to the sides of the hopper spout and is maintained normally closed hy o weight 19 applied directly thereto. My invention, lxfovircvel', conteur.

pletes equally the use of other forms of gate and other methods of applyin thc weight thereto adopted for accomplis ing the end in View.. Pivoted adjacent tothe lower end of each of the fvuidewsys', is u lever 20 which is connectednwith u lever arm 21 on the gute i8 by o connecting 'rod' or link 22, the ,relation being such that depression of said` lever will operate to open the gate 18. The free end of the lever '2G projects into the path of travel of a skip or bucket, being so vcsithmed that the bottom of said skip.' or uchzet will contact therewith s short d1s' tence from the lower limit. of movement of said or bucket, soy, for example, inches. -The various lever and link connections sre so proportioned und adjusted that the weight of a skip or bucket, when empty, will sufficient to open the gate 18 :ig'ailist the normal resistance -appliedthcreto for closing the same and such, also, 'that said gate will he fully opened` or will he opened to o desired extent before thc skip or bucket reaches the lower limit of its movement, soy, for example, 5 inches" from its exil-clue lower limit., To reduccifriction und wcm', an sutiriction roller 253, designed :lud adopted to Contact with thc bottom of thc skip or bucket, is mounted at the free 0nd of thc lever 2()u The spncc between the mul of euch spout 17 and the skip o1' l'mcm into which it' is adopted todcliver motorini, is bridged hy means oan apron .24 pivol'cd at the end of said spout and forming :i continu ation et the bottom thereof. Vifhcn thc skip lll',

`or bucket is raised above said apron. scid apron is swung pivotally sons to ,or 'icct 4 As said skip or bucket descends it 'will strike said apron and turn thessme p ,lli against the force of the weight it wide i ff open simi sieriing Switch.

will rhueopere lo meinein seidV apron in close contact Willi elle siole of seid skip orloncke. Wills lille described eonstruetion, it isfobviens liert es 'en empty skip or biiclret deeefenfle it will operaie 'to depress ili'elever .9G and will open ,elle geel, tiene permiuling materiel to mi; from faire hopper 16 into seid skip o'r. lonelre, andv thai, es soon seid skip or lnieire: begins to rise, the Weight 19 applied lo solei gaie will operate to close the seme, 'linie rendering the opening and closing of seid gole entirely automatic, ooniroileil by movement of seid skip 'or lmeket.

im lie inverion releies Ito automatically openingenrl elosing the Sterling switches of on' electrically conrollecl hoisting engine, whereby elle li'iriing; switch corresponding lo eaeli skin i. ,market will be closed to @tart lie engine, vallen tlie bucket iefilled, ezi again oulomzitieally. opened eS sonnes Seid buche? luie' been raised e short predetermined flislonee, ille construction and errangement of my improved hoist is folloivsr-livoiied adjacent to the lower end of eaeli guiilewny' 2, is; o lever arm which is operatively Vconnected with the sieri-infr member oi' ille eorresponding smiling Swile by o connecting rod or link Q8, the relation beingr Fluch llia depressing tile ree end of Snifl lever below its designed normal poeiion, will operate lo close seirl Starling; :witch :xml suoli. also, that signin raising eniil lever :arm to ile; normnl position' Will The free end of ihe lever ern: i?? projects into the ypelli of l'm'el oi one of the Skips or buckets, the releiion heini? ich that the ooltom of Seid l .eliip or buelze will come into conlact therenilli e .elioi-f; distance aboveV the designellf extreme lower limit of movemen of Said .iltip or hooker; say incliei in which posilion of Sold elgip or luiclce, the gate 18 oon-l li-fillnfp; lliv uifwlmrgge spool l?, will have l lanen fully opened? in ille nimmer hereofore iieeorilnefl. Applied to the lever firm 27 and mlogu'ml to iairiintziin the Home normally al iis limit' oi' mmfement above the lower end ol" liuc gufif-weys f2 mul o Support die wel 'lil oi" Seid lever erm 27, ogetlier with ilse elrip or lnwkel resting thereon while the some ie being'fillecl, is a eounierweighi 29j 'Seid counlewveighl is-so proportioned :mil

applied. iioweife, that when said skipor. luu'lw is iiileil lo a predeterminedextent, will skip or lnurlwidwill exert a turning nimm-nl :ilioui the :axis of eairl lever arm 27 gri-enter 'hon that of saiil, eounterweiglit; ulivi-oliv, when .said bucket is thus loaded, il will oyjierete lo depress said lever erm 27, 11ml illus Close ille corresponding Starting Huile-h eonlrolliug tile hoieiing engine, in rile nommer liereofora ilescrbed. In i'li preferable'r-onstruetion shown, ille lever more For liot'li skips or buckets :1re pinnefl eee E orotlierwise rigidly securel to a shaft 30 rotamloly mounted in suitable 'fixed bearings, botli of :said lever arms 27 being maintained in normal reiiseol osiions by means of n eingle eounterweig 29 app'lled to e lever arm 31 'likewise' pinned or otherwise ri idlyV veeoured'o eaicl shaft 30,' The norme depressed position of ille counlterweigsglit` 29 and thus the normal raised posieions of the lever arms 27 is clened by means oa suitable sup )ort 32 on which seidA counterweight 29 ie adl connecting rocls linkslQS are connect/ed Adirectly to e shorrflever erm 83 formed intel gral With-the lever erm SLvwhicli carries the counterweight 29, as beet shown inFg. 5.

lilith the described construction, itie obvious that the counterweigh 29 'will operate to maintain the starting swiehes .correspending to each ski or bucket normally open and that each alerting `e'o'itch will be closed for e very shortA inervel when either Skip or bucket is filled, that is, during the time required 'for seid elrpl orlbuoket to move downwardly to elle exrremev lower limit or' its movement and to 1loe again raised to permit the lever erin 27H0 Resume its normal osition.

linI ori er that the skips orbuelte, when slippored on the lever orme 2?, may be lfree to move downwardly lo gravity when looded, without resieence om and without' nfeetingthe lioising engine, the relation ie' opted to reet. As shown, also, the

s'xeh theo-seid skips or buckets will come into contact with me 'raiee ends of helever amis 27 before the upper bucket 'reeehee ille extreme upper limiJ of its; movement, eey one foot. In this manner sufficient slack will loe provided in the 'cable elteohed to the lower bucket lo permit the seme to r'leeeend e. distance sulicienr to close the start-ing swireh corresponding lo vieeid lower biielreb without exerting any .et-rein oo the cable eli:- 'eeliel lliereto. To reflue/e friction and weer,

enti'friction rollers 34 erepreferablgf mounterl in the ends of the lever arises???4 with 'which ille botoms of elle skips .fir'bnclres Contact. f' l Botl. the connecting ms or links 22 enel. 2Sv ere preferably merle djusalile, :is by mea'ni of turn buckles, tov provide for verying the operative lengths thereof anni. tlms regulating the opening otlie geltes` i8 'and the closing of the saring switeliee 12 and 13. While I lieve herein shown two Starting switches 12 :mii 13, a single martini; switchme be used equally Well7 if desire:

1. In a. hoist of the type described, the combination of guideweys, a skip or boeket movable insai gnideweys, a sugply hopper provided with e (lieoliarge opemn'r for de livering material info seid skip orbiiueket., o? `gate which controls saiddischarge operaio?, lmeans 'for maintaining said gele norm'oly leo , switch.

v2. In4 athoist of the type described, the

' combination ofguideways, Ye skip or bucket movable in guideways, a supply hopper provided with adischarge opening for deivering material into said skip or bucket, a weighted gate which controls said discharge "opemngrand' means rendered operative by the weight of an empty skip or bucket for opening s'aid gate, an electricellycontrolled hoisting engine, e starting switch therefor, and means rendered operative by the weight of'aloeded skip or bucket for closing said starting switch.

3. ln a hoist combination of guideways, askip or bucket movable in said guideways, a supply hopper vprovided with. a discharge openin for deliverinfr gatewhich controls said discharge opening, means for maintainin said gate normally closed, and Ineens ren ered operative by the Weight of an empty skip or bucket for opening said gate, sind means-comprising a. lever arm the free end of which projects into the path of travel'of the skip or bucket and connection between said lever armand said gate whereby ydepression ofsaid lever .ar'i will open said gate, an electrically controlled hoisting engine, ,n starting switch therefor,

and means rendered operative by the Weightv of e loaded skip or bucket for closing said startingswitch.

fl. ln a? hoist ofthe ltype described, the

combination of guideivays, askip or bucket movable in said guideways, a supply hopper provided with a discharge opening for den livering lnaterialinto saidskip or bucket, a gate which controls said discharge opening, means for maintaining said `gute normally closed, means4 rendered operative by the weight of an empty skip or bucket for opening said gate, an electrically controlled hoistingengine, a starting switch therefor, and means controlled by the Weight otra loaded skip or bucket for closing said starting switch,y said ineens comprising a Weighted lever the free end of which projects' into the path of travel `Aof said skip or bucket und` connectionbetween said lever vand the startingfmember said starting switch, whereby movement of Ysaid lever against the force of the' weight applied thereto, will operate to closeV said starting switch.

L 5. lna. hoist of the type described, the

combination of guideways,.a skip or bucket movable in' said guideways, a supply hopper rovded with a,A discharge opening for de- .aivering material into said skip or bucket, a

lcontrolled hoisting en# of the type described, the

materiel into said skip' or ucket, a.

means comprisii'lpnu. weighted lever the free end of which projects into the path ol travel of 'said skip or bucket and connection be tween said levier and the starting,T member of said starting switch, whereby n'lovemcnt of said lever against the force of the weight applied thereto, will operate to close said starting switch.

6. ln a hoist of the type described, the combination ot' guideways, a skip or bucket 'movable in said guideways, an electrically controlled hoisting engine, a starting switch `therefor, and means rendered operative by the weight of a loaded skip or ,bucket for closing said starting switch.

7. In a hoist of the'type des'cxibed, the

combination of guideways, a skip or bucket movable in said guideways, an electrically controlled hoisting engine, a,4 starting switch therefor, means for maintaining said staaltmg switch normally open and moans rendered operative by the weight of'aI loaded skip or bucket for closing seid stcrtin switch for n short interval of time.

8. ln a. hoist ot the type described, the combination of guideways, a skip or bucket movable in. Said guideways, an electrically .controlled .hoisting engine, a starting switch therefor, yielding means for supportinf e skip or bucket containingless than a ihll load of material at a distancev above the extreme lower limit of its movement, said supportinnr means being constructed :md ar rang to be overcome by the weight of :L skip or bucket when fully loaded, thus permitting seid loaded skip or bucket to descend to the extreme -loWer limit of its travel and connectiouhetween said suppontiug means and the.`sta1ting member of the starting switch, whereby the finaldownvard movement of the loaded skip or bucket Will operate'to close said starting switch.

9. ln a hoist of the type described, the combination of lideways, a skip or bucket movable in ,saicl ruideways, an electrically 'controlled hoisting engine, a starting switch ltherefor. yielding menus for supporting :i

skip o bucket containing less than a full load o f nur rial at a' distance above the eX- tremelowerhmit of its movement, said sup-- portingmeans being constructedl und urrenged to be'overcome by the Weight of u skip or bucket when fully loaded, thus perllli` wel :hitting said. loaded skip or bucket to descend to tlic extreme lower limit of its travel, and connection between said supporting means und the starting member of the starting switch, the relation beingr such that whenA said supporting means are in rised position, sind starting switch will be open and such,

also. that downward movement oiiisiiid sup!-A storting; member of said stortingV switch, n'

countei-w'eight applied to said level' arm and adapted to maintain the same normally in raised position, the relation being such that depression of said lever arm will4 loperate to 'close said starting switch and said counter- Weight being so proportioned and applied in such manner that it'will counterbalance the weight of said skip or bucket when said skip or bucket is less than fully loaded.

11. ln c hoist of the type described, the combination of guideways, n skip' or bucket movable in said guideways, an electrically controlled hoist-ing engine, a storting switch therefor, and means controlledby the weight of e loaded skip or bucket :for closing said sten-ting switch, said 'means comprising; a

pivoted lever arm, a connterweight applied to said level' arm and connection between said-lever erm and the starting member of the starting switch.

12. ln ti hoist of the type described, the

combination oguideways, a skip or bucket movable in sei guideways, an electrically controlled hoisting engine a starting switch therefor, means controlled by the Weight of a, loaded skip or bucket for closing seid startin switch, said means comprising e.-

pivote.

lever 'one arm of which projects into the h pat of-travel of seid skip or.

bucket, a counterweight on the other arm of'. f

said lever and connection between seid lever 'and the starting member of said starting switch, whereby movement of seid lever against the resistanceothe connterweight applied thereto will operate to close seid starting switch.

13. In a hoist'of the type described, the combination of guidewiys, a skipor bucket movable in said guideways, a supply hopper provided. with a discharge opening, ii gate which controls said discharge opening, means for maintaining said gate normally closed, land means for opening, said gate, said means comprising wlever arm which projects into the (path of travel of seid skp. e

or bucket es sai skip or bucket deseen and operative connection between seid lever arm and gate, whereby depressing said lever arm will open said gate.

Ih testimony, that I claim the foregoing; :is any invention, I affix my signature in presence of two subscribing witnesses, this Qthfdny of December, A. D. 1908.

n PHHO A. RTN. Witnesses:

K. A. COSTELLO,

Henny W. CARTER.