US2633822A - Strip stock oiler - Google Patents

Description

April 7, 1953 R. s. WATTERSON, JR 2,633,822

STRIP STOCK OILER Filed 001. 11, 1950 2 SHEETSSHEET 1 3nnentor ROBERT S, WATTERSON JR.

April 7, 1953 R. s. WATTERSON, JR 2 STRIP STOCK OILER Filed oct 11, 1950 2 SHEETS-SHEET 2 Snventor ROBERT 5. WATTERSON JR.

Patented Apr. 7, 1,953

UNITED STATES, PATENT OFFICE STRIP STOCK 01m n Robert S. Wattersom'hu, Salem, Ohio Application October 11, 1950, Serial No. 189,568

. 1 v This inventionrelates ing metal strip and the like and more particularly to an improved and novel device for apply- As is well known to those familiar with the art, pickling consists of dipping the metal in hot acid which attacks and removes the scale or oxide formationsf As the metal'emerges from the pickling bath, however, it is void of any protective film and has numerous pits on its surface. In this condition it is quite susceptible to further oxidation upon contact with air and it is therefore necessary to immediately give the emerging stock a protective coating of oil or.similar preservative in order to prepare it for storage .or'shipment.

Since hot rolled strip or sheet stock is often somewhat wavy due to uneven contraction durlfing'cooling, and since it is imperative to apply an even continuous protective film to the stock, it has been necessary, in most prior devices, to utilize a pair of soft and pliable rolls between which the .stock is passed. The protective film is, of course, applied to the stock by the rolls which, due to their suppleness, easily follow the irregularities of the. stock and apply an even film thereto. 4 I t The type of roll which isnow in common use :for this purpose is constructed of a large number .of discs of velvet, canton flannel, or similar material. These discs are positioned axially on a nuts placed at each end. This type of roll, while .being operative to effectively apply the desired .protective film, has very poor wearing qualities and frequent replacement is therefore necessary. :It is accordingly the primary object of this invvention to provide a sheet or strip oiler, of the character described which, while. being operative .to effectively apply a protective 'coatingin the '1 Claims. (01. use-22'0 to apparatus for process- :shaft which serves as. an axle and are tightly compressed by means of retaining washers and manner desired, is so constructed that replace ment of parts is rarely, if ever, necessary.

A further object of this invention is the pro- --vision of apparatus of the character described, wherein adjustment is automatically made 'for :the various ,thicknesses I of material to be processed.

Another; object o r the invention .is the pro- ..-vision of means whereby, the pressure exerted by "the applicatorrolls may be varied as desired.

1 2 Other objects and advantages of the inven-, "tion will becomezapparent upon full considerati'on o'fthe following specification and accompanying detailed drawings wherein there is dis- I. closed. a rtain' 'vention.

preferred embodiment of my in.-

In the drawing: Figure I is a side elevation of a strip stock oiler constructed according to the principles of my invention, with parts broken away toshow -internal details; 7

' Figure 2 is a front elevation of the-oiler of Figure 1 with parts broken away to show further internal details;

Figure 3 is a fragmentary sectional view taken substantially along line III-III of Figure 2 showing the principles ofoperation of my invention; and

Figure 4 isa fragmentary sectional view taken substantially along line IV-IV of Figure 1 showing details of its construction.-

Referring to the drawings, the reference numeral Ill denotes the base of my machine. The two side members II and I2 thereof are held in spaced relationby end members l3 and i4 and are secured thereto preferably by welding. As shown, thefront end member i4 extends only a short distance upward and serves principally as a means of enclosing a rectangular reservoir in. which is contained oil'l5 or similar preservative to be applied'to the stock.

As is'clearly shown in Figure 4 journals l6 and I! are positioned in the side'inembers H and I2 and areadapt'ed to retain bearings l8 and H! which rotatably support a shaft 20. The shaft '20, the ends of Whichextend beyond the sides H and I2. is threaded at one'end" to engage a handwheel 2i and is keyed at the other end to engage and, drive a rotary pump 22, the purpose 'of. which will be later described. To retain the shaft20 in the proper axial position I have provided a pair of collars-23 which are secured to the shaft 20' by set screws '24 and which bear 'against the ends of the journal is to thereby prevent'any axial movement of the shaft. A keyway 25' is provided in the shaft 20 to engage an alternate .series of discs 26 of bronze or similar material. Interspacedwith the, keyed discs 28 is a series of slightly larger discs 21 of similar material. According to the principles of the invention the large discs 21 are provided with a central aperture 28 which is considerably larger than the shaft '20. It should be apparent, then, that the large discs 21 have considerable freedom of .transverse movement. w

For yieldingly retaining the discs 26 and 2? in axial-position I have provided a pair of con- .-ica1= .coil springs 45 and 29, one of which is positioned ateach end of the series of discs to act -thereupon to yieldingly compress the discs into a compact roll. Acting upon the outer end of spring 29 15a flanged sleeve 30- which is positioned .between the shaft 20 and its supporting bearing 1 I8, and is keyed tothe shaft tofallow only axial movement with respect thereto. The outer end of the sleeve 30 abuts against the inner shoulder of the 'handwheel 2 l which functions to; position the sleeve axially as desired, to thereby provide means of adjusting the force exerted by the springs upon the discs 26 and 21.

Pivotally Qfulcrum'ed by the shaft :31! which is secured in the upper forward section of "the side members i l and I2 is the upper frame section 32 of my apparatus. As is shown most clearly in Figures l and 2 the upper frame section 32 comprises a pair of angle members 33 and 34 which are journaled at their front end on the fulcrum shaft 3| and are free to rotate thereabout. :At points directly above the shaft 20 I have provided journals l6 and H in the depending leg portions of angle members 33 and d4. Rotatably supported by the journals l6 and I1 is a disc assembly similar to that supported in the lower journals t8 and 1-1. Further description of the upper disc assembly will not be given since reference may be made to corresponding elements of the lower assembly by referring to the primed reference numerals of the upper assembly to corresponding numerals of the lower assembly.

Secured to the extended-baclgendsol the " angle members 33 and 34 ;is a tank "35 which is adapted to contain oil or other preservative iiiuids. The extended positioning of the tank 35 provides means of exerting considerable force between the rolls since the-points of support are the-fulcrumed shaft 3i and the line of contact between the disc assemblies. .:A short conduit 36 extends fr'om'the front of thetank 35 and terminates in a distributing head 37. Extending downwardly and outwardly ir-om the distributing head 3'? is a pmral'ity of conduit sections which are spaced axially along the distributing head so that the open ends of the condu itsare positioned in the interstices formed between discs 26" and 31'. A regulating valve '39 is provided in the main conduit 3 6 topermi-t regulation of fiuid flow therethrough. "Fluid is supplied "to "the reservoir tank 35by means of conduits 4D and 4| which are con-- nected to the tank 35 and'pump 22 respectively and which are interconnected by a length oi fies;- ible tubin 12. 'The :pump '22 is suppiiedwith fluid through conduit 'flwhi'ch wnneetsthe lower reservoir fori'ned bythe base members I I, 12, f3 and M. 'It should be ooservedthat rotation'of "the lower shaft it "actuate-sine pump "2! "to force the fluid 43 from the lbWeT reservoir, into the tank 35 and onto "the upper disc assembly.

In the operation of my apparatus the strip i stock to he oiled is fed pew/ecu the "rolls or disc assemblies and into a coiling "machine, "for esample. As the stock is drawn through tneo'iler, the discs are rotated by contact therewith. As the lower disc assembly rotates "through the-lower reservoir, the'li'uid [5 contained therein adheres to the discs in the "manner shown in Figure whereupon it is'carriedupwardly and deposited upon the undersuriaoe of the stock, as is shown at l5. As explained, rotation of the lower shaft 20 actuate's thepump "22 tone-liver oil to the-up- "per disc assembly through "conduit 38. This oil is, of course, fed into the interstices formedbetween the pairs of large "discs 27' and is carried downwardly by 'io'tation of the "assembly.

It should be particularly noted that as the disc assemblies are ro'ta'ted, the eccentric larger discs 21 "and 27 are constantly forced apart --'s'o noted that the interstices which carry the fluid to the stock diminish in depth until, at the stock, they cease to exist. This action insures the spreading of the-fluid evenly over the entire surrace of the stock.

It is, however, undesirable to apply an excess I of oil to the stock since it is merely wasteful that, in'e'ir'e'ct, their eenters'of rotation coincide with their geometric centers; provided that the stockis fiat. l t noweverpas isoften' tne case tne stock lis-somewhat wavy, the eccentric ldlscs will and offers no additional protection. To prevent this I have provided wipers 44 and 45 of resilient material s'uch as rubber or leather. The wipers 44 and 45 are secured near the stock exit of the apparatus by suitable clamps and are adapted to bear against the entire surface of the stock to thereby remove any excess fluid as the stock emerges from the apparatus.

It should be understood that the force exerted on the stock by the rolls is exerted in part by the smaller concentric rolls I6 and 2B" and in part by the larger eccentric rolls 21 and '21". The force'exerted by each may be varied to best suit the particular application by adjustment of the hand wheels 12 anddl" to causemore or less com- .pressicn between the discs. The total force ex erted may be varied if desired by placing additional weight on the tank 35. This would not be necessary unless the stock was extremely irregularso no special .provision has been made'for thls adjustment.

From the preceding description is should be apparent that I have provided improved apparatus which is operative 'to apply an even film of oil to strip stock and theli ke, and which'ha'swearing qualities far beyond those of the existing prior devices. My device will readily accommodate stock of various sizes and thicknesses without requiring any adjustment therefor. My ap- ,paratus maybe manufactured economically from standard parts and-materials and requires only elementary machining operations. According *to my principles the rate of applicatio'n'ol the oil is dependent upon the speed of the stock passing through the apparatus. The'quality o'f'the applied film therefore remains essentially constant regardless of variations in the speed of the stock such as might occur 'wnen'using the apparatus in conjunction with a coiling machine, for example.

It should be understood "that the embodiment of the invention herein "described sh'odldbe "considered as illustrative only "since numerous changes may be made inth'e specific structure without departing frornthespirit or scope or the invention.

While I have specifically described-my inven- "tion as 'beingia strip stock'oiler, it shoul'dbe understoodthat itheinvention is equally applicable to other coa'ting operations "as, for example, in the application of paints to strip material generally. "Reference should therefore be had to the appende'ci claims in determining the scope of the invention.

I claim:

1. Apparatus of the "character described comprising in combination a base having a reservoir adapted to retaina fluid; "an upper 'rrame'sectlon 'pivot'ally secured at one-end to said base'; a pair of horizontally disposed roll assemblies, -one of which is journal'ed in said base-and'the other of which iis 'Jourrialed in said upper name section, each of said assemblies comprising an elongated "shalt, a multiplicity of small discs adapted tto be 's'lidably sustained on said shaft :in concentricity therewith, :a "multiplicity of larger discs interspaeed with said es'mall discs and 'adapted to be loosely re'tained on :said shaft, said larger discs having a central axial aperture with a diameter at least equal to the diameter of said shaft plus the difference between the diameters of said large and small discs; a fluid retaining reservoir tank positioned on said upper frame section; means including a pump connected to one of said shafts to transfer fluid from said base reservoir to said reservoir tank; means to conduct fluid from said reservoir tank to the top of said upper roll assembly; and means to conduct fluid from said base reservoir to the bottom of said lower roll assembly.

2. In apparatus for oiling strip stock and the like the combination of a base; an upper frame section pivotally secured at one end to said base; a pair of roll assemblies, one of which is journaled in said base, the other of which is journaled in said upper frame section; each of said roll assemblies comprising a shaft, a multiplicity of small diameter discs adapted to be slidably retained on said shaft, 'a multiplicity of large diameter discs interspaced with said small diameter discs and adapted to be loosely retained on said shaft, said large diameter discs being provided with a centrally disposed axial bore adapted to permit sufiicient freedom of transverse movement to allow the periphery of said large diameter discs to be in tangency with the periphery of said small diameter discs at any point therealong; means to apply resilient pressure between said discs; said upper frame section being adapted to support a weight at its free end whereby a predetermined pressure may be maintained between said roll assemblies; a fluid retaining reservoir positioned in said base and adapted to maintain fluid in contact with at least the bottom of said base-journaled roll assembly; and means including a pump actuated by rotation of one of said shafts to supply fluid to said frame-section-journaled roll assembly.

3. In apparatus for applying oil or the like to lonigtudinally moving strip stock the combination of a pair of roll assemblies; a base member journaling one of said roll assemblies; a second member movable with respect to said base member adapted to journal the other of said roll assemblies in spaced parallel relation to said first mentioned roll assembly; each of said roll assemblies comprising a shaft, a set of discs slidably retained on said shaft in concentricity therewith,

and a second set of discs of larger diameter than equal to the difference in the diameters of said r discs; means to apply axial pressure upon said discs; and means to supply fluid to the periphery of said roll assemblies.

4. In apparatus for applying oil or the like to longitudinally moving strip stock the combination of a base member; a roll assembly journaled in said base member, said roll assembly comprising a shaft, a plurality of discs slidably mounted on said shaft in concentricity therewith, a plurality of larger diam-eter discs retained on said shaft interspaced with said first mentioned discs, said larger diameter discs having a large axial bore therein of diameter at least equal to the diameter of said shaft plus the difference in the diameters of said first mentioned and said larger diameter discs whereby the latter are adapted to have transverse movement with respect to the former; yieldable means positioned adjacent at least one axial end of said roll assembly adapted to apply compressive force to the discs thereof;

means to supply fluid to the outer periphery of said roll assembly; means positioned'in spaced parallel relation to said roll assembly adapted to yieldably apply pressure to strip stock passing between said roll assembly and said last men tioned means.

5. In apparatus for applying oil or the like to longitudinally moving strip stock the combination of a base member; a horizontally disposed roll assembly journaled in said base member, said roll assembly comprising a shaft, a plurality of discs slidably mounted on said shaft in concentricity therewith, and a plurality of larger diameter discs retained on said shaft and interspaced with said first mentioned discs, said larger diameter discs having a large axial bore therein whereby said larger diameter discs have freedom of transverse movement with respect to said shaft at least equal to the difference in the diameters of said larger diameter and said first mentioned discs; means to apply compressive axial pressure to said discs; and means to supply fluid to the peripheries ofsaid discs; the arrangement being such that strip stock passing over said roll assembly will cause the same to rotate.

6. Apparatus for spreading an even coating of oil or other fluid on the lower surface of longitudinally moving horizontally disposed strip stock comprising a base member; a roll assembly journaled in said base member, said roll assembly comprising a shaft, a plurality of discs slidably mounted on said shaft in concentricity therewith, and a plurality of larger diameter discs retained on said shaft and interspaced with said first mentioned discs, said larger diameter discs having a large axial bore therein whereby said larger diameter discs have freedom of transverse movement with respect to said shaft at least equal to the difference in the diameters of said larger diameter and said first mentioned discs; means to apply compressive axial pressure to said discs; and means acting on the upper surface of said strip stock to retain the same in pressure contact with said roll assembly.

7. Apparatus for oiling strip stock and the like comprising in combination a pair of opposed roll assemblies, each including a shaft, a set of discs adapted to be retained upon said shaft in concentricity therewith, a second set of discs of larger diameter than said first mentioned set of discs interspaced therewith and having an axial bore therein at least equal to the diameter of said shaft plus the difference in the diameters of said discs whereby said larger diametered discs are adapted to have transverse movement with respect to said shaft at least equal to the difference in diameter between said sets of discs; a base adapted to rotatably retain one of said roll assemblies; an upper frame section pivotally secured to said base and adapted to rotatably retain the other of said roll assemblies; means to apply variable axial pressure to said discs; and means to supply the peripheries of said roll assemblies with fluid.

ROBERT S. WAT'IERSON, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,476,015 Julian Dec. 4, 1923 1,672,982 Johnson June 12, 1923 1,696,329 Saatman Dec. 25, 1928

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