US2273528A - Roller support - Google Patents

Description

Feb. 17,1942. E. J. KARF ROLLER SUPPORT Filed Dec. 23, 1940 v 2970672237": Edward rffidr a flmw- Patented Feb. 17, 1942 ROLLER SUPPORT Edward J. Karp, Cicero, 11]., asslgnor to G. S.

Blakeslee a 00., Cicero, III., a corporation Illinois Application December 23, 1940, Serial No. 371,333

4 Claims.

- The present invention relates to an-improvement in roller support, and more particularly is directed to the supporting and maintaining of a rotating inclined conveyor drum concentric with the outlet of a feed hopper of a quenching and washing machine or the like.

Quenching and washing machines of the type referredto generally'comprise a tank containing -a liquid bath having a hopper adjacent one end thereohand in which an inclined drum containing a spiral is disposed, with one end of the drum disposed concentrically of the discharge opening of the hopper for rotation thereabout. Articles to be quenched or washedare dumped into the hopper and are conveyedupwardly through the bath by the drum and spiral therein and are then discharged through an outlet, at the other end oithe drum. Heretofore the drum has been supported forrotation by rollers mounted in a bracket secured to the bottom of the tank, or the drum has been hung in a roller bearing carried by the tank and disposed intermediate the ends oi the drum. With either of these'mountings,

the quenching solution in the tank which contains gritor other abrasive substances which spectto'the hopper so that these parts contact each, other and upon continued use they will be rapidly wornaway requiring their replacement.

My invention is directed to providing an improved bearing mounting of the drum with respect to the hopper. for maintaining these parts "in concentric relation. More specifically, 1 pro-.- vide a of concentric and overlapping ele- Tments, one of which is associated with the hopper and,,comprises,an inner race, the other element associated with the drum and comprising an outer race between which elements a plurality 7 pear from the detail description.

vNow in order to acquaint those skilled in the art with the manner of constructing and operating my invention, I shall describe, in conjunction with the accompanying drawing, a specific embodiment oi the same. a

In the drawing:

Figure l is aside elevation of a quenching and washing machine embodying my invention;

Figure 2 is a vertical sectional view of a portion of the machine of Figure 1 showing the rotatable drum supported upon the discharged end of the hopper in accordance with my invention; and 1 Figure 3 is a sectional view taken substantially on line 3-3 of Figure 2, looking in the direction of the arrows;

Referring now to the drawing, I have shown a tank I which is adapted to contain a quenching liquid for tempering, or, if desired, a cleansing liquid. The tank is open at its top, and a hopper 2 is disposed adjacent one end thereof. An inclined perforate drum 3 is disposed in the tank I and is supported with its lower end adjacent the outletof the hopper. The drum is provided at its upper end with a spider l secured thereto in which a shaft 5 is fixed. The shaft 5 is rotatably mounted in a radial and thrust'bearing I, of suitable known type. carried by a frame 0, which is fixed to the tank I in any suitable manner. An electric motor 9, supported on a platform I 0 carried by a frame H secured to and extending upward from frame 8, drives drum 3 lodges inthe bearings causing wear and eventual fdestructionthereof. If the bearings are not fre- ,quently renewed, the drum will settle with reinto the hopper 2, and are carried upwardly excess liqui'dclinging thereto returns to the tank through the perforationsin the upper portion of the above the level-of the liquid in the tank. The drum is provided adjacent its upper end with an outlet I5 through which the treated articles are discharged in the rotation of the drum. The structure so far described is known and need not be illustrated nor described in greater detail here.

Referring now to Figures 2 and 3, the hopper 2 may be of. any suitable form and is shown as comprising an inclined arcuate lower wall 20, front and rear walls 2i and 22, respectively, and side walls 24 connecting walls 20, II and 22.

:and discharged downwardly into Ring 25 fits into a corresponding opening in wall 2| and receives in its lower portion, the lower substantially semi-circular portion of wall 20. The latter wall and wall 2| are secured to ring 25 in any suitable manner, conveniently by welding, and the hopper 2 is welded or otherwise suitably secured in tank i.

A ring 26 having a downwardly extending circumferential flange21 is welded to the lower end of drum 3 concentric therewith and extends concentrically about the upper portion of ring 25 in close proximity thereto, the clearance 23 between these two rings being slight and only that required for mechanical considerations; In practice this clearance is about 25:" and maybe slightly less, in certain cases. Flange 21 ofring 26 overlaps ring 25, as shown. A plurality of P and flange 26, in contact therewith. That'provides a, roller bearing for. the lower end of the drum 3, ring 25 and flange 21 constituting theinner and outer races, respectively, ofsuch bearing. .Preferably, each bearing roller 30 is mounted for rotation about its ownaxis, by means of a bushing 3| and a pintle 32,- the latter being suitably fixed in a spacer ring 33 disposed within the annular channel defined by flange 21 and ring 25. In Figure 3 I have shown six'bearing rollers 3|) evenly spaced by means of ring 33 and the as- 33 in proper operative positionwithin the channel defined by flange 21 and ring 2li.- It will be noted thattheinner surface of flange 21 is unobstructed, assuring that scale, grit ,and other tions and re-arrangements of parts may be made withinthe broader aspects of my invention.

I claim:

1. In a machine of the class described, the combination of a tank, a hopper, a stationary inner ring flxed t0 saidhopper, said hopper discharg ng through said inner ring, a rotatably mounted inclined drum extending downwardly into said tank and having an outer ring adjacent its lower end, and a plurality of bearing rollers disposed between said rings maintaining them in concentric spaced relation.

2. In a machine of the classdescribed, the combination of' a tank, a hopper, a stationary ring fixed to'said hopper, said hopper discharging through said ring, a rotatably mounted infilined perforate drum extending downwardly bearing rollers 30 are disposed between ring 25 v into said tank and having a ring at its lower end fitting closely about saidfirst ring and provided with a circumferential; flange extending about said first. rings in concentric spaced' relation thereto, the inner surface of said xfiange being flatlengthwise fof-saidxdrum and unrestricted,

and a plurality of bearing rollersiconflned be- :tween said first-wring. and said :rflange: irrrolling contact therewith.-

a. In a machine of theistsizde aiad, the

combination .of a tank, a hopper in said otank -,having an inner wall, a ring fixedin saldwall clined perforate drum extending downwardly into 'said tank, a .ring secured on the lower'end of-said drum fitting closely about said first'ring and :having a circumferential flange extending aboutsaid first ring in. concentric spaced relaabrasiveimaterials which may be deposited upon such surface will readilybe washedtherefrom the tank, in the rotation, of the drum. r I g 1 It will be seen that as the drum is-rotated,'the

roller bearing maintainsitlconcentric with ring. 25, and the rollers 30-travel about ring 25 carrying with them ring 33, which assures that the rollers 30-do not remainin a fixed position Due to the slight clearance betweenrings 25 and 26,

tion thereto and defining therewith an annular channel, a spacer ring in said channel free from said first and'second rings, and a plurality of bearing rollers rotatably mounted in spaced re- ;lation on said spacer ring with their circumferential surfaces contacting said; first ring and said flange and their lower surfaces contacting said shoulder, the inner surface oiisaid flange being unobstructed for discharge therefrom downward- .ly into said tank ofsubstancesdepositedupon 1 said surface. 7

previously referred to, there is little likelihood of metal chips or the like, or of small articlesbeing treated, passing through the space v28. "Any metal chips, scale or other'particles which may fall upon the inner surface-offiange 21 will be stated; 'In' theqevent exceptionally large-metal chips. or scale particles tend to adhere :to'the-inner surface of flange 21-, they will quickly-be ground into .small particles by rollers 30,- which small particles will then readily be washed from understood that-ZIvarious modificaquickly removed therefrom, in the manner above 4-. In a machine of the-class described a tank, -.a hopper secured-in said tank liavinganinner wall, an inclined rotatably mounted drumihaving its lower end disposed in said tank adjacent'the lower end of said hopper, two rings respectively secured to said hopper and tothe lower end of said drum in overlapping relationjdeiiningan,

, inner bearing race and an outer bearingr'acaa plurality of bearing rollers disposed betw nsald ,races in rolling contact therewith, "and, means disposed between said races for maintaining said bearing rollers in spaced apart relation semen J.

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