US1395858A - Combined hoist and hopper - Google Patents

Description

M. C. MAXWELL.

COMBINED HOIST AND HOPPERP APPLICATION FILED FEB. 17, 1921.

Patented Nov. 1, 1921.

3 SHEETSSHEET 1- gwumavtoz awe aways M. c. MAXWELL.

COMBINED HOI ST AND HOPPER.

APPLICATION FILED FEB. I7. 1921.

Patented Nov. 1, 1921.

3 SHEETS-SHEET 2.

M. C. MAXWELL.

COMBINED HOIST AND HOPPER.

APPLICATION FILED FEB. I7, 1921- 1 ,3955858, Patented Nov. 1, 1921.

3 SHEETS-SHEET 3- STATES- MAXWELL o. MAX ELL, or STAMFORD, oo vnn'o'rrcum, assrer'ron ro THE YALE &

Towns MANUFACTURING COMPANY, or srarrronn, CONNECTICUT.

dOMBINED HOIST AND HOPPER.

Specification of Letters Patent. 7 P te t d- 1 Application filed. February 17, 1921. 7 Serial no. 445,614.

Toall whom it may concern: i

Be it known that I, MAXWELL QMAXw'nnL,

a citizenof the United States, and .aresident of Stamford, in the county of Fa rfield and State ofConnecticut, have invented certain-new and useful Improvements in Combined Hoists and Hoppers; and I do.

hereby declare the following to be a full, clear, and exact descri tion of. the invention, such as will enable; 0t ers' skilled in the art to which it appertains to make and useythe I i I .7 V This invention relates a combinedhoist and hopper designed more particularly for feeding steelchips or other material to electric furnaces.

With the constructions now in use the feed hopper for. the furnace is normally housed in a pit in the floor with its top edge flush with the surface of the floor and supp orted y a p a y n er. orrr ie fi g the hopper resting in bearing plates on the floor. The steel chips or other naterialis dumpedfrom trucksinto the hopper; and thelatter is then transferred to the fur nace by means of an overhead trolley hoist system, after which the door at the lower endlof the. hopper chute is opened and the contents of thehopp er discharged into the I furnace.

Greattrouble hasbeen enperienced in dis- 7 charging the contents of the hopper into thefurnace, due-tothefact that the mass of material in the hopper becomes arched and and wedged therein, so that when the discharge door is opened, only the lower part of the contents passes out thus neces sitating the use of mechanical devices to break the archand neethe material, and while such devices have been effective to a certain extent, they fail .to liberate. the .en-

tire mass so as to insure the complete dis-- charge of the contents of the hopper.

The object of my invention is to. provide.

means that will absolutely prevent; any arching or wedging of the contents of the hopper thus insuring the free discharge of the entire contents of the latter into the fur vnaee and it consists in the partsandcombination of parts and in. thedetails-of construction a's'wi'll be more fully explained and pointed out in the n I In the accompanying drawings, Figure l is a v e was. le ti n-thqrin 3. e per ini-r tion to disch rge its contents i t elevation of the releasing device for the door, and Fig. 8 is a 'VlGW similar to Fig. 1 of a modified form of trolleyhoist-for the ppa. c, P

-1 Q. represents an inverted conical hopper provided at its bottomor smallerend with an inclined discharge chutell normally closedjat its lower end by a door 12. This door isv hingedat its upperend to the chute so as to swing inwardly and upwardly when released, and it and the loweror free end of the chute are of a size to readily enter the feed Opening 13 in the electric or other furnace 1ft. flhe chute 11 is preferably made in two sections, .so that the lower end orthe part 15. thereofwhichenters the feed open ng in the furnace and Which .is subjected; to intense heat, may be-rem'oved and repaired or' renewed and another substituted as its condition may necessitate.

The section 15 015 the chute preferably conforms in shape or contour to the shape of the feed opening 18 in thefurnace and is of a size to readily enter the saine,-its penetras tion. into said feed opening 13 being limited end wall of the furnacen The door 12 isprovided adjacent ;-its free end with the hook shaped latch 17, the-hook by the external flange 16 whichengages the 18 of which passes through an opening '19 in the chute and engaging the wall of said opening lbcks the deer in its closed position. i

2O isthe latch unlocking. lever pivoted tothe outer side of thex'chute ll and provided at its lower end with a bent end 21 whichis adapted Whenlever 20 is actuated, to engage the hook shaped end 18 of the latch and force the same. inwardly thus releasing the door and permitting. the contents of the hopper and chute to gravitate into the furnacej i a The hopper, like thosein use, is normally housed :in a pit'in the floor with its top edge flush with the surfacegof the floor. and "sup ported. by. a plurality of fingers" 22" secured to the hopper and {resting on bearing plates located inthe: floor. Y

The hopper10,,is,connectedby hooks23 hains-ge with-the drum p grooved pulleys on shaft 26 which is supported fromthe twin trolleys 27 adapted to travel on the lower flange of the track rail 28. Shaft 26 is rotated to elevate and lower the hopper by the shaft 29andgears 30, the shaft 29 being rotated by the actuating chain 34 passing around a grooved pulley on the end thereof in'the usual and well known manner.

The principal feature of my invention consists of the hollow truncated cone 31.sus pended from the hoist chain 32 carried by an auxiliary hoist 33 which is actuated to raise and lower the cone by the operating chain 34. 'The part 31 is in the form ofa truncated cone open at'both ends and provided at its upper and smaller end, as shown in Figs. 5 and 6, with the oppositely disposed supporting bars 3lt-which rest within the pockets 35 in the upper edge of the hopper so that when the parts are assembled the cone will be supported by the hopper.

As shown in Fig. 1, the larger, lower end of the cone is approximately the, diameter of the hopper at the juncture of thelatter with the chute, so that the metal chipsor other .material in the hopper, and at the outer side of the cone cannot pass into the chute 11 until the cone shall have been raised, whereas the metal chips or'other material within the truncated cone are free to How out into the chute and into the furnace 14: when the door 12 of thechute is opened for the discharge or the contents. There is no tendency-of the chips or other material to archor become wedged inthe chute, or within the cone,hence upon opening the door 12 by the actuation of the lever 20 as described, the contents of the chute and the conewill gravitate into the furnace. In filling the hopper the chips or material not only fill the'cone but also" the space within the hopper at the outer side of the cone, .hence if after the material within the chute and cone have been discharged, or

" whileit is being discharged, the cone be lifted by'the auxiliary hoist 33 and its chain 32, the metal chips or other material within the hopper at the outer side of'the cone will fall-into the'chute and be discharged into the furnace.

By the use of a-hollowconewithin the hopper any archingof the contents of the hopper'will be avoided, and the contents vof for recharging.

the outer side of the cone will be brolzenup and pass out into the furnace. -After the '1 contents of the hopper have been discharged '7 the cone is lowered and'the hopper raised or moved to; disengage 1t from the furnace and is then moved and lowered lnto its pit The construction shown in Fig. 8 is identical' with that shown in Fig. 1 except that the auxiliary hoist for the cone carried by a band 36, mounted'on a sleeve 37 which hoists, the said sleeve 37 beingfsuspended from the latter. 2

It is evident that many'slight changes might be resorted to in the relative 5&1.- rangem'ent of parts shown and described without departing from the spirit and scope of my inventionhence I would have it understood that I do not wish to confinemyself tothe exact'constructionan'd, arrangement of parts shown and described but,

Having ,fully described my invention what I claim as new and desire. to secure by Letters-Patent, is

1. The combination of a hopper and hoist mechanism for the same, a hollow truncatedcone open at'bothends and adapted to rest within'thejhopper and hoist means for lifting the cone independently of the hopper. 2.- The combination of a hopper and hoist mechanism for the same,,a hollow truncated cone supportedby"; and within" the hopper, and hoist means forllifting the cone independently of thehopper. I p

3. The combination of a" hopper. of greater diameter at the top than the bottom,

houses'the operating shaft 26 of the twin hoistjmechanism for the hopper, a hollow truncated cone the larger'and lower end of which is approximately the size of the smaller end of the hopper and means for lifting the cone independently of the hopper.

' 4. The combination of a hopper of greater diameter at the top than the bottom," hoist mechanismfor "the upper, a hollow truncated cone the lower end of which approximates the size of the lower and smaller end of the hopper to form achoke for the same, the saidcone being supported by and within 5 the hopper and hoist mechanism for'lifting the cone independently of the hopper.

5. The combination'ofan inverted conical shaped hopper, hoist means for. the same, a

hollow truncated cone supported by 1 and] w'ithinssaid hopper, a chute forming a continu'ation of, the. hopper, a door for closingthe lower end of the chute anda latch oper able from the outside. of thechute for' -releasing the-doorg f" I 5 f6.-j The combination of .anffinverted conical hopper provided at its upper edgewitlrrpro jections for supporting the samein a posi tion to be filled, hoist means for'elevating and lowering'the hopper, a chuteforming a continuation of the-latter, a door closing ing the door in its closed position, a lever operable from the outer side of the chute o for disconnecting the latch and releasing the door, a hollow truncated cone within and adapted to be supported by the hopper,

and hoist means for lifting and lowering the cone independently of the hopper.

8.- The combination of an inverted conical hopper, hoist means for the same, a hollow truncated cone provided adj acent its upper end with projections adapted to engage the upper edge of the hopper and be supported by the latter and means for elevating and lowering the 'cone independently of the hopper.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses;

v MAXWELL G. MAXWELL.

' Witnesses:

MARGARET SARSFIELD, A. O. BLACKMAN.

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