US1755840A - Hoist - Google Patents

Description

HOIST Filed Sept. 20. 1926 2 Sheets-Shet 1 Attorvzgyfl April 22, 1930.

c. P. ROSS 1,755,840

HOIST Filed Sept. 20, 1926 2 Sheets-Sheet 2 :"K v i B J [nvenz/ m" 4Z6 2. 220,55

Patented Apr. 22, 1930 '.U N [TE STATES ULW'IDE P. EROSS, OF CHJZGAGO, ILLINOIS Application :filed .September 2;), r1926.

This invention relates to 'a feeding and hoisting apparatus and particularly to a mechanism adapted to control the flow of material into a hoistingueceptacle and :to do 5 this in response toth emovement of the hoisting receptacle. 0me object of the invention 'is "toprovicte means whereby a control gate, controlling discharge of material from a fixed receptacle, is positively and.automati- .c-a'lly operated a'mo'ving receptacle. An-

other object of "the invention is 'to provide means whereby the 'two during their period of co-operation are locked to each other and whereby they "are automatically urilocke-d when the receptacle has been filled and has commenced its 'movement. (@ther objects will appear fr'om time to time throughout the specification and claim.

My invention is illustrated more or less diagrammatically --in the accompanying drawings, wherein' Figure'l isa verticalcross section showing the-bin andt'he hucketend'a portion of the hoisting track;

"Figure2'i's an enlarged cross section of a portion of the bin ,andbucket'showing in detail vtlie discharge orifice -'from the bin, and the gate 'rxre'haliism Figure-8' a top elevation ofthe gate.

Like parts are indicated by like characters throughout.

A isa'IUading pit formed in part by enclosingwalls Itis provi'ded in this form generally so as to provide a bin and a cavity in which tracks-maybe positioned to carry a bucket or other moving receptacle. A is a trough or depression formed in the sloping wall of the pit to provide room for a portion of the bucket as it moves.

B is a receiving bin extending into the loading pit and formed preferably in part of the lw'alls A Extending across it are supports B which may carry tracks B B indicates the contents of the bin. 1

Situated at the bottom of the bin is a door C. As here shown this door is formed of a metallic structure which is inserted into an opening in the bin proper. This is preferable but it is not an essential feature of the strucer) ture. The door is provided with a chute C Serial .110. 56,412.

which communicates with a somewhat larger chute C isa gate or movable closure rovided ,for.the door. C is a track assemi'ly supported in part on the frame '6 and ypartlyon other frame members C". C are rollers.supporting'the gateC from the track "The gate is-moun'ted to be moved fbae'l: and forth along the track by the bucket. As the bucket descends it contacts the gate and moves it downward along "the track opening the door of the bin to'permitdisc harge into the bucket. C G arefingle members located on the gate and reinforcing it. Fastenecl to the gate and preferably -pivoted to these anglesis a'pa'ir of 'engaginglatehes'c". Each ofthem is preferably formed as shown with two side members each being inwardly hent as at C t Each of the latches has ,an upwardly ben t portion C Mounted at the inner end of the upwardlybent portion of each of the latches is a rollerg and at the outer end a roller C. (9n its bottom "the gate is provided with bucket contacting itops or brackets C. These brackets are shaped preferably-t0 .re-ceive the rear edge of the bucket as it descends andicontac ts it. 'The gate is normally held "closed by one or -more counterweights C eaeh o'f which is attached to a =oa bl'e C", and at its ot'her en'd is fastoned to the gate andpasses over'a sheave 0". 'In-i'gurel the oouifter-weight has been omitted for the sake of :clearness.

The particular details of the track struc ture and arrangement form {HO port of jthe present invention. -It :is sufficient for :the purpose of the present invention that :the flnioket nuns beneath Ithe thin. 'fiihe track strjucturegenevattly:eensists ota pairofuna-in double -rtraeks E1), beneath eachioif :renieh ris :a gnidei trackiDt. 'Eheztimtk Eeextends into 3117 the joined ate :a toad: 3E which is *inaetteet amtimmtanntfrtt.

2F m fSBE'UIIt l doxjible t trock genena'ity like thteEtmti-ks 3B mind )E itlliil'is i-trtse trackzfimtsiipointiimmediatelyhelnw amupporting fframe r-inember whih mleniher serves to apesition is uppiolzt ithe tracks 56 isaifeaineimembensuppoiztingitheitmeks and fthfilT'amWml p rollers H adjacent its bottom and having also flanged rollers H located higher up. H is a swinging door mounted for movement on the bottom of the bucket H provided with a shaft H having a pair of preferably double flanged rollers H mounted on it. These rollers contactthe track D? and throughout the major .part of the excursion of the bucket prevent the door from swinging open.

I is a contact member mounted" on the bucket H adapted to contact the engaging lugs C on the gate structure. This member strikes these lugs as the bucket descends into the pit. I a locking member mounted on the bucket adapted to engage with the looking latches C in the manner shown in Figures land 2 and assist incausing the bucket and gate to move together throughout. a part of their excursion, I is a track member adapted to be contacted, by rollers C 7. as shown particularly in Figures 1 and 2 and serving to hold the locking latch in locking position as shown in these figures. I is a limiting member adapted to be contacted by the rollers C and the locking latch as shown in dotted lines in Figure 2 and to'co-operate thus to unlock the lockinglatch from the member I and thereby to free the bucket and gate from each other.

' Although I have-shown an operative device, still it will be obvious that many changes might be. made in size,.shape and arrangement of parts without departing materially from the spirit of myv invention; and -I wish sense diagrammatic, i

The use and operation of my invention are as follows: I 5 i This apparatus is normally part qf a coal or other material h'andling'plant in which the material to be handled is transportedlin cars and from them dumped into a receiving bin. From this bin -jmaterial is discharged periodically into a bucket which is. periodically' raised and lowered. The load-ofthe bucket is itself,- after having been'raised, discharged. into some other receptacle.

- When the apparatus is to be used the hoistin'g mechanism ofvt'hexbucket is set inopertherefore that my showing be taken as in a ation and the'bucket is lowered into the pit beneath the'binwiThe part I oft-he bucket contactsthe lugslC of the gate and-forces the gate open in opposition-to the weightof the counter-weights -Atthe time that-this action commences the lockiiig latches i C have each of them engaged one" of-the members Iso that the bucket and gate are'locked together and move as a unit-The lowering-movement"of.the buck'et'as iticontirrues therefore moves the-gate with 'itisteadily'downwar'd. i When the 'buckethas been' loaded, it is raised and the gatenioves upwardly under the influence of the counter-weight and also under the influence of the hoisting force of the bucket. itself" because the locking latch s still hold the gate positively to the bucket. Thus it is certain that if the bucket rises, the gate will rise with it, and the locking latches are held in locking engagement with the projections on the bucket by the tracks I which positively prevent displacement of the latches during this period in the operation of the'device.

When the gate has been closed, that is when it has reached the full closed position due to the raising of thexbucket, the forward or out ward roller of each of the locking latches strikes the member I and since it cannot move further in the direction of motion of the bucket, it moves upward along the direction of the memberI and thus it is pivoted upward about itsapiv'o' tpoint and moved out of engagement and out of contact with the locking members I, and the bucket and gate arethus separated from each other, the g-at-i' to remain in closed position where it s held by the counterweight, tinue upward.

I claim:

In combination with a hopper, a reciprocating gate. a bucket moving into and out of register with the hopper, an intermediate chute between the bucket and hopper, means interposed between the bucket and the gate for opening the latter after thebucket reaches the loading position, a latch pivoted on the gate, said-latch having an up-turned end and being provided with anti-frictionmembers, anabutment on the bucket adapted to be engaged by.the latch whereby the bucket asi it leaves the loading position; positively closes the gate, the latch comprising .a link pivoted on the gate, tracks along which the bucket, the gate and the link travel, means including one of said tracks to hold thelatch in engagement with the bucket while the bucket is in the loading position, and means comprising a track member angularly. disposed with relation to the gate track for forcing the link out of engagement with the abutment when the gate has reached the closed position.

- Signed at Chicago, county of Cook and State of Illinois, this 3rd day of September,

and the bucket to con- CLYDE P. ROSS.

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