US2469095A - Apparatus for refinishing tampico rolls and brushes - Google Patents

Description

May 3, i949. o. A. WIDERBERG ET AL 2,469,095

l APPARATUS FOR REFINISHING TAMPICO ROLLS AND BRUSHES Filed July 3l, 1946 5 vShees--Sheet l lggl. @6&6

h INVENTORS OSCAR/4. Mot-@BERG and y .I4/,4L FRED/4 WALLsrEN, J2e 2 .140 /ze/'f-bmeg.

May 1949. o. A. wlDERBr-:RG ET AL 2,469,095

APPARATUS FOR REFINISHING TAMPICO ROLLS AND BRUSHES Filed July 3l, 1946 5 Sheets-Sheet 2 mmm. .www nsw .mmm

i lNvENToRs OSCAR/UMOERBERG and MLFREDAMLLSrE/v,

/ze/'f'Ao/weg.

May 3, 1949. o. A. wlDr-:RBERG ET AL 2,469,095

APPARATUS FOR REFINISHING TAMPICO ROLLS AND BRUSHES 5 Sheets-Sheet 3 Filed. July 31, 1946 OWN May 3, 1949. o A. WIDERBERG ET AL 2,469,095 l APPARATUS FOR REFINISHING TPMPICO ROLLS AND BRUSHES Filed July s1, 1946 5 Sheets-Sheet 4 @www www ,WWW ,mmm

www www INVENTORS K M M 6N, in www. M @A W .0 AM W fr ,ma www,

May 3, 949. o. A. WIDERBERG ET Al. 2,469,095

APPARATUS FOR REFINISHING y TAMPICO ROLLS AND BRUSHES Filed July 51, 194e 5 sheets-sheet 5 KD N1 Fig INVENTORS OSCAR ,4./4//DER5ERG and ffl/ALFRED A M/ LSTE/v,

Patented May 3, 1949 UNITED STATES Al'"P-AlRA'iIUSy FOR REFINISHING, TAMRICOL ,L ROLLS AAND BRUSHES".v

Oscar lA. Widerber'g and Walfred Ai Wallstel'l; Worcester, :Mass.',. assignorsxtof The American Steel :andzWire Company of N eW-Jerseyya'fcr.- .i

poration of New Jersey Application July,31,1946,-Seria1NozGSiLSMg (C1. SLi-84) 13 Claims.:

1' The present invention provides improvedl equipment for renewingthe surfacesof rotary fabric brushes or rollsthat are employed-for bufng the surfaces on tempered and cold rolled stripv steel. Such rolls rub ythe -surfacesof the strip passing between them either.:for the removal of oil on the strip or, inthe case ofV the so-called tampico rolls, rub the surfaces ofi-the strip with a polishing compound, usually a mixture composed of about` twenty-five per cent middlings and seventy-five per cent of hardwood sawdust,-

and supplied to the rolls at a predetermined rate from alhopper and distributing screw. Both rolls located after these tampico-rolls, free the plate of substantiallyall off-the oil with the middlings and sawdust'adhering tothe strip. The-second part of the nishing train-for the strip may consist of a stationary brush cleaning the plate supported by an underlying-roll called a pipe roll,

a pair of the so-called"tampico rolls, and a pair of pipe rolls; thesepipe rolls being formed from a pipe ofA proper diameterV closed atboth ends by welding and then wound with canton` flannel. Besides their functionincleaning, these stii rolls may-be adjusted to exert a` smoothing action on the surface When'a-bright finish is required. The tampico Vvrollsl usually are providedwithv ber surfaces.

In View of the fact that these rolls act on oily surfaces that may have yadhering polishing composition thereon, theA rolls during service becomesaturated with -oil andv polishing composition, and become uneven. in diameter, thus exerting unequal action on the strip surfaces, causingr an imperfect polish thereon.

Consequently, it becomes desirableto renew the surfaces of. such rolls by a sutabletrimming operation to restore them'to uniform diameter and increase their absorptive properties.

Various attempts to provide equipmentl instituted for the wire'brush andafurther improve ment wasnoted. 1 Finally the rotaryztrmmer was discarded altogether-5' and:`

the surface ofthe rollio'fbetrimmed;A was tried.

This trimmer; -whiohlforms the subject matter of the presentinvention has gifvenfvery.I good results in practices-l The invention.r will Aloe-understood more. readilyV` from the accompanyingtvdrawings, wherein.:r y

Figure l is: an endeelevation1 of :autrimmingmachine adaptedl to trimrthe fsurface of fabric, f

cord, or-tam-pico vrollsl--whichfhave-@been worn in servicefforthe purpose-oirestoring suchlrolls to a .uniformdiametergf Figurey 2 is -a-top plan: View: :of:` the 'appara-tus, parts being komittied'-.fo'r clarity; L,

Figure 3 is aside:elevationofrthe apparatus of Figures-4 is .las sectionilfelevationf. of` the appa ratus,A the View. being vtakenfom.the 'lin-e IV-IVp-fl Figure 3;.

Figure i .5 is a fragmentary-.:enlarged f. sectional y plan viewA of,a.bearir-ig'for` one end/of the recip rocatoryA `lshaft :upon 1 which' the brush or. roll to along `the `line AVL--fVV off-FgureeB; looking inl; the direction y-of= the arrows; the Niewaalsovshowing means: permitting: ,'lremovalof'f; vthe "reciproca-tory shaft v.for mounting:anddemountingzthe tampicoroll to be renishediyand Figur'eipG-isfa fragmentenfy sectional- .plan view of adjusting".:instrumentalities for effectingv adjustment: kon the freiinishingi tools: yrelative to; the tampico roll being refinishedr:

Referring.-more' particularly :to the drawings, the mechanism ofi the presentfinventionfisshown as being mounted oniaframerorbaseAnon each end of which is mounted(aslongitudinallysliding platform; one ofy which isiindioatedfat 2B 'and-the other. is indicated :at C: A.A laterally texte-ndi-ng-i bracket. D also is providelwhichffis-:suitablysecured to the fbaseaApreferably midwayebetween the ends.

As isgshown on-vthe. drawings', reference being made-:rst to Figures- 11x25 and'fthe:platformA` slide. Bfis extended. lupwardly-.atlits inner: end.- into; :at-pain cfspaced. lu-pstanding brackets :8; 8a,

whiclrcarry.hearingsrzll); illa. for shafts; i2, on

each `of` Whichismountedi'a :powendriven: working tooliHI-,li ori i503:iForirotatingfvthe tools I4; |50, there are-providedmotors l5 andamounting.y

mounting.l w instrumentalitiesfor ithe :motors 'l 6 comprisesyspacedr-basesstudsv l8 |80/ that are bolted, orl otherwisefsecuredefby-bolts1or other.

suitable fastening,;zdevices indicated vatfZDLto the -ficombination vof thel wirebrush ands-a :grindingiwheel revolving against@ platform slides B and C. A plate 22, provided with laterally extending trunnions 24, 24a. that are received in bearings 26, 26a on the base studs I8, Ia, forms a mounting for each of the motors I6. Lever arm 28, integral with the mounting plate 22 and provided with a pin 30 that is received in an arcuate slot 32 in a bracket angle plate 34, which plate is secured to the slide platform in a suitable manner to give rigidity of mounting such as by a bolt or the like 36, provides a means for effecting any necessary adjustment of the motors I6 relative to the tools I4 or |50, suitable clamping means, such as nut 38 being provided for securing the proper adjust-` ment of the tool shaft I2. The tool'shaft I2 is provided at one end with a sheave 35, which in practice receives V-belt 31 that pass over the sheave 35 and the driving sheave 40 on motor shaft 42.

The slide platform B as well as the platform C is mounted for sliding movement on a slide track 44, see Figure 4, which forms a sliding mounting for the platform, the lateral plate-like extensions of which, indicated at 46, form attaching means for the base A and housing 48 for adjusting instrumentalities, as will be pointed outin more detail hereinafter, attachment being afforded by means of bolts 50 and machine screws 52. The slide surfaces of the slide platform are protected by wear plates 54 secured by screws 58 or the like.

The working tool I4 may be, in this instance, a wire brush adapted to operate on the surface of the tampico roll or brush, indicated by reference numeral 60, which is to be renished. This tampico roll or brush is adapted to be received on a shaft 62 that is adapted to be reciprocated with a short str-oke, in practice about three-eighths of an inch, by suitable mechanism in a reciprocation head 64 that is mounted onlaterally extending bracket D. This reciprocating shaft 62 is mounted in suitable bearings which permit reciprocation, one of which bearings is shown in section in Figure 5, and which will be referred to in detail hereinafter. At this point, it may be noted that the shaft 62 is driven by a V-belt sheave 66 that is mounted adjacent to an end of the shaft 62, V-belt 68 passing `over the sheave 66 and over a corresponding V-belt drive sheave 'I0 on one end of motor shaft 'I2 of the driving motor 14.

For reciprocating the shaft 62, it is provided with a driven end sheave 'I6 that engages with V-belt 18, which engage a driven V-belt sheave 80 on a worm shaft 82 that extends into the reciprocation head or housing 64, in which are provided bearngs 84 for the worm shaft 82. This worm shaft 82 carries va worm 86 that meshes with a worm gear A88 on shaft 90. Thisshaft 90, which exten'dssubstantially at right angles to shaft 82, carries a cam 92, on which cam is an eccentric follower indicated at 93, that terminates in an extension 95 to which is connected one arm of a bell crank shift lever 94, the other arm of which'is formed into` a yoke that straddles the shaft 62 between collars 98 and 99 that are rigidly mounted on the shaft 62 so that they are, in effect, integral with the shaft, the bell crank yoke 96 being provided withinwardly projecting pins |00, I that vstop short Aof the shaft 62, but engage the collars 98 and '09 alternately as the shiftyoke 96 `reciprocates responsively to movement of the eccentric follower 93 that raises and lowers its connected arm of the bell crank shift lever 94. The shift lever 94`is fulcrumed on pin |02 that is mounted in the housing 64.

It will be seen from the drawings, Figure 3,

that the shaft 62 is mounted in bearings that permit both rotation and reciprocation of the shaft, this reciprocation being effected by engagement of the pins |00, |0| with first one of the collars 98 and 99, and then with the other. The construction of one of these bearings, which permits this reciprocation and rotation, while also permitting assembling and disassembling of the shaft assembly for mounting and demounting the tampico rolls on the shaft 62, is shown in Figure 5, which view also illustrates means for clamping the shaft assembly against reciprocation whenever such may be desired.

The shaft assembly referred to comprises a stand which carries an end bearing |04, the bearing stand being indicated at |05. This bearing stand comprises a pair of spaced, yieldable legs to be referred to hereinafter in greater detail, that are mounted on a slide |08 extending transversely across the top ofthe base of the machine. Other suitable bearings, not shown in detail, form additional supports for the shaft 62, while permitting oscillation of the shaft through such bearings.

The construction of the end bearing |04 is shown in detail in Figure 5.

This construction, as shown in detail in Figure 5, indicates that the end bearing is composed of anti-friction bearing elements I0 that are retained in a bearing roll, the outer member of which is a tubular insert ||2 tted into the bracket |06, the inner member of the bearing roll being a sleeve ||4 that encloses a restricted end portion ||6 of the shaft, and abuts against shoulder ||8 between the restricted portion |I6 of the shaft and the remainder thereof. The bearing roll is closed by closures |20, |22, which are adapted to retain lubricating packing or the like |24, |26, the closures |20, |22 being secured to the bracket |06 by screws |25 so that they may be removed. A collar |28 mounted on the shaft 62 and held in place by a removable screw |30 serves as a stop for the tampico roll or brush 60 which is being reflnished. The outer end of the sleeve I4 abuts against a collar |32 at the outer end of the restricted portion ||6 of the shaft 62 and is secured to the shaft portion II6 by a removable screw |34. Collars |28 and |32 form stops for limiting reciprocation of the shaft to the desired length of stroke. Removal of the collar |32 enables the hearing and bracket assembly to be slipped off from the slide |08 to permit release of the screw |30 from the collar I 28 and screw I 34 from the collar |32, so that the collar |32 may be removed to enable the bearing and bracket assembly to be removed from the shaft, thereby enabling the shaft and the nowrenished roll or brush 60 to be demounted, removal of the collar |28 permitting the tampico brush or roll 60 to be removed. Replacement thereof, with another such roll or brush to be reiinished is accomplished by a reverse of these operations for reassembling the shaft and bearing.

It will be understood that except when it is desired to demount the shaft and brush or roll after refinishing, the bracket |06 is clamped rigidly to the slide |08. For this purpose, a lever |40 is mounted on a threaded shaft |42 that extends through both spaced legs |44 of the bracket |06 straddling the slide |08, and a stop |46 is positioned between these leg portions |44. Turning the lever |40 in a counter-clockwise direction as shown, clamps the leg portions |44 of the bracket or bearing stand |06 against the sides `of the glise, e

suse lts, fr h stbp'gl 1a @bestie portions'beyoiid their elastic limit; `In practice;

the stop I/imay be providedwith asuitablehole" for the passage of the Shanna. apathie shaft maybe threaded only along a L portionfthereof When the'brush; or roll GD is ,mbe removed after.y

refinishing, the 4lever I lil isturned Vin 'a'clockwise direction to release theleg portionsld fromthe slide track |08, and enable the4 removal of the.,

bearing' Yfrom the shaft after the, Collar I B'Z has beeny removed from .the sha ft ,polfsicn.'I,I6v

There now remains t0 ,b de scribedthe/adjustlment'f the slide platformen and C Ywith their'.

Working"'toolsl that are carried thereon'lr,` Ashes been pointedout above, toolljlA is awirebrush' that isad alit'edl to act l0,11 the fabricsurface' fof the ta'mp'ic'ov roll'orbrushl 6B vtoV scarify' andloosen the surface of the fabric that is... impregnated. With polishing composition and otherfforeignmateinserisci the todij |50, whicnmayy begs' grinding wheel, or the like,` In View ofthe fact that the roll o'r brusht that is being renished hasta be evenly vsurfaced concentrically with itsaXis `and shaft 62,' it is necessary vthat the slidesB andC be adapted 'to be moved equally4 towards the roll or brush 60 foreven application tof the nishing tools I4 and |5 against the roll 60.

It Will be understood that the slide above for the mounting, of thev refinishing. tool ifi and motor |6 and the drive connection betweenthe tool shaft I2 andthe motor lapplied equally tothe mounting 7andoperation of the..

the housing -wallssecured to the frame A. f A'bottom'plate |18 isheld inv place by cap screws I and `rfolts |8|, this plate extending continuously from one gear housing lil to the other gear housingas showmforming the mounting means for the gearv housing and for shaft bearings |82, for holding the shafts |84. 'v

Each of theshafts ist projects through each of the gear housings 48 through bearings |65 in end Walls I'Ilt, and is provided with an end nut |86. On the portion of each shaft in the respective gear housing 38 is a driving pinion |83, which engages each of the gears |5S, for effecting simultaneous and equal adjustment of the carriage platforms-B and C and the tools M and |50 rela* tive to .thetampico roil or brush 8f3. v-

Each ofthe shafts |34 is provided at its inner endwithr a bevel gear E96. These bevel gears |90 engage a driving bevel gear |92 on the end of shaft |95, which has an enlarged sleeve It, turn` able integrallywith the shaft and Which carries a gear |98 and a manual handwheel 2d@ provided with an operating handle 22. This handwheel provides a simultaneous adjusting means for the. tools I4 and |50, through shaft |913 and the shafts |84 driven through shaft |94 rand the abovedescribed bevel gear connections. Manual op eration of the handwheel 20S) effects a rapid adjustment ofthe tools, simultaneously and equally,

platforms B and C are Iduplicated yin their construction and. mounting', so that the detailed description' given,

slideplatform C; andthe slide mounting fof ,the

platform C, being similar to that of th e .platforrfl` B, the repetition of allot suchdetailed descrip` tion becomes unnecessary.'

Passing now to the adjusi-,meintineans4 for'. actuating the platforms Band C, there are .provided,.f

first, an'independent, vrapid manual adjustmentf;4fl

of the'rtools to the surface of theltampico rollor brush to be refinished, and,'secon cl, lsimulfi tan'eo-us' 4manual adjustmentl of Ithe ,tools 4against the roll beingreiinished, thesemanualfadjustments providing meansfor equally'applying 'the tools' M and |50 to the tampico roll beingrefinished.v

In order to effect such adjustments,leachslide platform B and C'is mounted onta threadedsh'aft |52,'each Aof which extends through opposite end` aprons |54" and |56 of the slide platformsB and.

C, and turns in gear |58 that is mountedon-the shaft |52 through turning a handwheel |60 that is mounted as shown on the end of the shaft |52. f

Each handwheel carries a'retract'able lockingo pin' |2,"an rend of which is adapted to entera hole inthe outer end apron |54! by pressure of a spring |64, a knurled 'head' |66 on the head off the pin enablingit to bepulled readilyA -out of engagement'with the hole. Retraction'of the pin |62 releases handwheel |60 forrotation manuallyl Y by handle |68,v the handwheel being tightly mounted on the shaft |52. Rotation ofthe lianclv Wheel" |60 turns Lthe shaft |52, Which`, ,mo ves through stationary gear I 5 8' to 'apply .each of. the tools vto the tampico rolls or retract them therefrom, Vasl desired, depending "on theydirection' of: rotation `of the `l'iandwheels |60, 'and/shafts 152.3 Each'of 'these' threaded shafts] 5 2 lis held. by,

lrelative to the brush or roll 60 which is to be reiinished.

In order to effect such simultaneous adjustment, locking pins |62 of handvvheels |60 must fbe entered into their respective locking engagement `with the carriages Band C so as to lock these handwheels against rotation while the driven iristrumentalities which now will be described.j

Gear |93 Ais adapted to mesh Witha pinion 2te on a sleeve 2105 movable integrally with stubshaft- 208 suitably off-set from shaft |94 and sleeve. |86.'

The 'stub-shaft 26S carries' at its outerencl a ratchetvvheel 2 t, provided with a requisite num- .Y

berofteeth to provide the requisite very fine feed-in for the tools |43 and |59 when these tools y are operating on the brush or roll 66.5 On the shaft 238.` and operably connected with the ratchet Wheel 2 I0, is a bell crank 2I2, one arm of which, designated 2id, carries a pawl 2|6 pivotally mounted to the bell crank arm 2id as indicated at 2| 8, this patvl engaging the teeth of the ratchet Wheel 2|0 by a positive engagement through action of a springZZt. y

The other arm of bell cranlr 2l2 designated at 222 is pivotallyconnected at 224 to a pitman 22e carried on an eccentric 228 on shaft 23d. Shaft 230, lilze shafts i955 and 20d, projects through the framefAcf the machine and the pitman 22%,5 eccentric 228, ratchet wheel ZIB, bell cranls 2|2` andl handwheel 28d being on the outside of this framelAfoi aCCSsibility. vThe shaft 23) passes" throug bearings 232 and V23d in the frame of theinaohine and isvshown asbeing connected at' 23fivvithgthe. driving shaft-235i of a speed reducer 240 driven by motor 242. Therefore, operation of motor` 242 drives the shaft 230 at requisite speed to turn the eccentric 228, thereby lifting and lowering the pitman 226 to actuate pawl 2I6, which engages a predetermined number of teeth in the ratchet wheel 2|0, for turning the ratchet wheel 2 I0 through a corresponding arc, the length of which arc is adjustable, depending upon the angularity of the bell crank 2I2 with respect to the pitman 226, the greater this angularity, the larger the number of ratchet teeth between each operative engagement of the pawl 2 |6 therewith. This adjustment may be effected by an arcuate, apertured bar 244 concentric with the stub shaft 208, and connected to the bell crank 2I2 by a pin 246 on the end of arm 248 which connects with the bell crank 2| 2 to change the angularity of the bell crank 2| 2 with the pitman 226 as may be desired, depending upon the hole 250 in the apertured bar 244 in which the pin 246 is ref ceived. A second pawl 252 is provided for locking the ratchet wheel 2| 0 in its adjustment, so as to assure the desired movement of this ratchet wheel.

Each actuation of the pitman in an upward direction moves the arm 2|4 of bell crank 2|2 in a counter-clockwise direction as viewed in Figure 3, the locking paWl 252 holding the ratchet wheel 2|0 against movement as the actuating pawl 2|6 rides over the teeth of the ratchet wheel for the predetermined adjusted distance. The downward stroke of the pitman engages the pawl 2I6 with the ratchet wheel teeth, thereby moving the ratchet wheel through the prescribed distances; This movement of the ratchet wheel is transmitted through the gear and shaft trains to turn shafts |52 correspondingly thereby feeding the tools I4 and |50 equally against the surface of the tampico brush or roll 60 which also may be reciprocating as well as revolving so that all parts of the surface thereof are brought into engage` ment with these tools. This also causes corresponding movement of the handwheel 200, but this is unconsequential.

Locking pawl 252 is pivotally mounted on frame A as is indicated at 254; and as has been said above, pawl 2| 6 is pivotally mounted at 2 |8 on the crank arm 2|4. Therefore, a manual lifting of these pawls breaks the driving connection between the ratchet wheel 2|0 and pitman 226, thence to shaft 230 and motor 242, thereby ena-v bling manual operation of the handwheel 200 to be permitted, with corresponding rapid retraction of the tools I4 and |50 from the now resurfaced brush or roll 60, which then may be demounted as described above and replaced with another brush or roll to be resurfaced.

If desired, a guard 256 may be provided as shown to protect an operator around iiying fragments from the roll 60.

It will be understood that when independent manual adjustment of the tools I4 and |50 is to be desired, shafts |52 turn through the gears |58 and move relatively through the gears, these gears I 58 being held against rotation by the friction between the gears |58 and pinions |88, between the shafts |84 with bevel gears |90 thereon and bevel gear |02 on shaft |94, between gear |98 on shaft |94 and pinion 204 on shaft 208, between on the shafts |52, to feed'these shafts and carriagesrB and Ctowards or away from the work,

assures contact of al1 portions of the roll surface with the working tools, it being understood, of'course, that the roll 60 is being also rotated during the refinishing operation. Upon completion of the resurfacing, the roll has been provided with a feed surface that is concentric with the axis of the roll.

While the foregoing detailed description and the accompanying drawings shown are exemplary embodiments of the invention in an illustrative manner, it will be understood that the invention is not limited necessarily to the particular details herein specifically illustrated and described, it being understood that such may be modified within the skill of one skilled in the art without departing from the inventive concept as may be necessary to adapt the invention to varying conditions as uses, as defined by the appended claims; and while the invention is illustrated and described in connection with the resurfacing of tampico rolls or brushes, it will be understood that it is of the pawls 252 and 2I6 and ratchet wheel 2|0 on the shaft 208, and between the bell crank 2|2;

pitman 226 and motor shaft 230; but when the handwheels |60 are locked by pins |62 against turning, and power is applied to the gears I 58 either by turning the handwheel 200 or through driving from motor 242, the gears |58 act as nuts general application in so far as concerns the feeding mechanisms for the working tool carriages and the reciprocation of the work during rotation thereof for even application of the tools to all rportions of the surface of the work.

We claim:

1. Mechanism for producing a predetermined surface on a cylindrical workpiece, which com-4 prises, in combination, a mounting frame, means on the frame for receiving the workpiece, a pair of oppositely disposed working tools one on each side of the workpiece, adjustable carriage means for the working tools carried by the mounting frame, means for adjusting each of the working tools independently of the other relative to the workpiece, mechanism for simultaneously adjusting the said working tools toward the workpiece, means for effecting a predetermined progressive simultaneous engagement of the working tools with the workpiece for predeterminately acting upon the workpiece for imparting the predetermined surface to the workpiece, means for rotating the workpiece during engagement of the tools therewith, and mechanism for lineally oscillating the workpiece during rotation thereof for presenting all surfaces thereof to the said tools.

2. Mechanism for producing a predetermined surface on a cylindrical workpiece, which comprises, in combination, a mounting frame, means on the frame for receiving the workpiece, a pair of oppositely disposed working tools one on each side of the workpiece, adjustable carriage means for the working tools mounted on the said frame, manually operated mechanism f-or independently adjusting each ofthe working tools relative to the workpiece, manually operated mechanism for effecting equal and simultaneous adjustmentof the working tools toward the workpiece, powerdriven means for simultaneously rotating the working tools, power-actuated mechanism for effecting a predetermined progressive simultaneous engagement of the working tools with the workpiece for imparting the predetermined surface to the workpiece, and mechanism for rotatingthe workpiece'. as the workingtools act upon. itfor peripherally. presenting all portions of 'the surfaceof the. workpiece to the working tools.

3, Mechanism for producing a predetermined surface on` a cylindrical, workpiece, which comprises, in combination, amounting frame, means on the frame for receivingthe workpiece, a pair of oppositely disposed` working tools one on each sideof vthe workpiece, adjustable carriage means forthe working tools mounted on the said frame, manually operated .mechanism for independently adjusting each of the carriages and the working tools mounted4 thereon yrelative to the workpiece,

manually operable mechanisms for effecting equal.

and simultaneous adjustment for the working tools, toward the workpiece,v power-actuated mechanism vfor effecting a predetermined progressive simultaneous engagement of the working tools with the workpiece for imparting the predetermined vsurface tov the .workpiecey power mechanismv for rotating: the workpiece as the working tools act upon it for circumferentially presenting the workpiece. to the tools, and instrumentalities operated by the said power mechanisrn forlineally oscillating the workpiece during rotation thereof for presenting all portions of the surface of the workpiece to the working tools.

4.,.Mechanism for producing. a predetermined surface ,on a cylindrical workpiece, which ccmprises, in combination, a mounting frame, a slide track` on the mounting .frameeX-tending transversely thereof, a rotatable shaft havingan inner end and an outer end, said shaft being adapted to support a workpiece for `movement therewith, bearing means for the shaft positioned adjacent to the router end of the shaft, a bracket bearing stand asselnb'ly4 for the bearingv having spaced leg portions. straddling the slide track, meansfor-releasably clamping the,l said leg portions against the slide track, the said-,bearingmeans permitting eciprocation of the shaft and workpiece, mechanism for rotating the shaft and workpiece, instrurnentalitiesl driven by the said mechanism for oscillating the shaftand workpiece during rota;- tion-thereof, workingineans for surfacing the workpiece, and mechanism forv adjusting the workingmeans relative to the workpiece.

5. .Meel-ianism for producing `a predetermined surfaceon a cylindrical workpiece, which ycom-- prises, in combination, a mounting frame, a slide track onthe mounting frame extending transversely thereof, a rotatable shaft having an inner end and an;` outer end, said shaft being adapted to support a, workpiece for movement therewith, bearing means for the shaft positioned adjacent to the outer ond of the shaft, a bracket bearing stand assembly for the bearing having .spaced leg portions straddling the slide track, means for releasably clamping .the .saidleg-portion against the slide track, the said bearing ,means permitting reciprocationbf the shaft and workpiece, mecha--` otinstrumentalities for 'a roll to be renished, drive .10 meansrelative vto the workpiece during rotation and reciprocation of the shaft and workpiece.

6.: Mechanism for producing a predetermined surface on a cylindrical workpiece, which comprises, in combination, a mounting frame, a slide track on the mounting frame extending transversely thereof, a rotatable shaft having an inner end and an outer end, said shaft being adapted to support a workpiece for movement therewith, bearing means for the shaft positioned adjacent to the outer end of the shaft, a bracket bearing stand assembly for the bearinghaving'spaced leg portions straddling the slide track, means for releasably clamping. the-said leg portions against the slide track, the said bearing means permitting reciprocation of the shaft and workpiece, mechanismfor rotating the shaft and workpiece, instrumentalities adjacent to the inner end ofthe shaft driven by the said mechanism for oscillating the shaft and workpiece during rotation thereof, removable collars on the shaft cooperating with the bearing means for acting as stops for limiting amount of reciprocation of the shaft, removal of .thesaid collars and release of the clamping means .permittingI demounting of the bracketbearing standand removal ofthe shaft and workpiece,V tool means fory Working on'the workpiece, and means on the mounting frame for adjusting the .tool means relative to the workpiece during rotation and oscillation thereof for'surfa-cing the 'said workpiece.

7. Mechanism for Aproducing a predetermined surface Ona cylindrical workpiece, which comprises, in combination, a mounting frame, mechav(nism for mounting the workpiece on'the mounting fra-mcfor surfacing operations, instrumentalities f for imparting rotary and reciprocatory'lnotions to theworkpiece, working toolsadaptedvto work on the, workpiece for producingthe predetermined vsurface thereon, independent driving means for the tools, means for `effecting manual rapid independent adjustmentof Athe tools relative to the workpiece, means for effecting manual rapid simultaneous adjustment of the tools toward the \workpiece, and power-actuated mechanism for effecting a predetermined ne and equal adjustnient of the .tools againstthe workpiece.

8.Mechanism. for refinishing fabric polishing rolls, which comprises, in combination, mounting mechanism for rotating the roll, a pair of oppositely disposed working tools adapted to engage the roll, one of the said tools being a wire brush adapted to loosen surfac-efabric from the roll,

,andthe other tool being a grinding wheel adapted to remove the loosenedlfab-ric and to smooth the remaining fabric .on the roll, independent driving' means for rotating the tools, means foreffecting rapid manual and independent adjustment ofthe ,toolsarelative to theworkpieca mechanism for effecting rapid manual and simultaneous adjustment ofthe tools relative tothe workpiece, and power-'actuated"mechanism for effecting a predetermined ne and equal adjustment of the tools .against the workpiece.

9. Mechanism. for refinishing fabric polishing rolls, which comprises, in combination, `mounting instrumentalities for a roll to be renished, ydrive mechanism for rotating the roll, a pair of oppositely disposed working tools adapted to engage the roll, an adjustable carriage for each of the tools, driving means for each tool mounted on each carriage, manually actuated adjustment means for each carriage for independently adjusting each of the tools, manually actuated adjustment means for simultaneously and equally adjusting the tools relative to the workpiece, power-actuated mechanism for effecting progressive and equal step-by-step feed of the tools against the workpiece, and means for adjusting the magnitude of such movement.

l0. Mechanism for refinishing fabric polishing rolls, which comprises, in combination, a mounting frame, mounting instrumentalities for a roll to be renished and carried by the mounting frame, drive mechanism for rotating the roll, a pair of oppositely directed working tools adapted to engage the roll diametrically oppositely, one of the said tools being a wire br-ush adapted to penetrate and tear loose surface layers of fabric on the roll, the other tool being a grinding wheel adapted to grind off the thus-loosened fabric layers, and to smooth remaining fabric layers on the roll, a carriage for each of the tools slidably mounted von the frame, driving means for each,

tool mounted on each carriage, an apron depending from each end of eachcarriage, a, threaded shaft extending through the aprons of each carriage, bearings in the mounting frame for each threaded shaft, a handwheel on each threaded shaft for effecting independent manual adjustment of the carriages and tools thereon relative to the roll, a drive gear on each threaded shaft, a pair of aligned driving shafts having adjacent ends and remote ends, a driving pinion on the remote ends engaging with the gear on each threaded shaft, a bevel pinion on the adjacent ends of the driving shafts, an operating shaft for the driving. shafts, a bevel gear on the operating shaft adapted to engage the bevel pinions on the driving shafts, a handwheel on the operating shaft for manually effecting simultaneous and equal actuation of the driving shafts and driving pinions, thereby producing simultaneous and equal adjustment of the carriages and tools, and power-actuated mechanism forv effecting step-bystep actuation of the operating shafts, which stepby-step actuation is transmitted to the carriages and tools for effecting a predetermined feed-in of the toolsagainst the roll.

11. Mechanismfor refinishing fabric polishingrolls of the class identified as tampico rolls, which comprises, in combination, a mounting frame, mounting instrumentalities for a roll to be reiinished carried by the mounting frame, drive mechanism for rotating the roll, a pair of oppositely directed Working tools adapted to engage the roll diametrlcally oppositely, one of the said tools being a Wire brush adapted to penetrate and to tear loose surface layers of fabric on the roll, the other tool being a grinding wheel adapted to grind off the thus-loosened fabric layers, and to smooth the remaining fabric layers on the roll, a carriage for each of the tools slidably mounted on the frame, driving means for each tool mounted on each carriage, an apron depending from each end of each carriage, a threaded shaft extending through the aprons of each carriage, bearings in the mounting frame for each threaded shaft, a handwheel on each threaded shaftfor effecting independent manual adjustment of the carriages and tools thereon relative to the roll, a drive gear on each threaded shaft, a pair of aligned driving shafts mounted in the mounting frame having adjacent ends and remote ends, a driving pinion on the remote ends engaging with the gear on the said threaded shafts of the carriage shafts, a bevel gear on the adjacent ends of the driving shaft, an operating shaft for the driving shafts, the operating shaft being mounted in the mounting frame, a bevel gear on the operating shaft adapted to engage the bevel pinions on the driving shafts, a handwheel on the operating shaft for manually effecting simultaneous and equal actuation of the driving shafts and driving pinions, thereby producing simultaneous and equal adjustment of the carriages and tools, a gear on the operating shaft, a ratchet shaft, a pinion on the ratchet shaft in mesh with the saidgear on the operating shaft, a ratchet wheel on the ratchet shaft, cooperatng pivotally mounted pawls for the ratchet wheel, a bell crank on the ratchet shaft, one arm of which carries one of the pawls, a pitman pivotally connected to the other arm of the bell crank, a motor shaft passing vthrough the mounting frame and having bearings therefor in 'the mounting frame, an eccentric on the motor shaft, means connecting the pitman to the eccentric on the motor shaft, a motor for driving the motor shaft, and means for angularly adjusting the bell crank on the ratchet wheel for predeterminately varying the arc of contact between the pawl on the bell crank and the ratchet wheel, thereby adjusting the amount of throw of the ratchet Wheel for each stroke of the pitman for predeterminately controlling amount of travel of the carriages and tools against the roll being renished.

12. The method of refinishing a fabric polishing roll which comprises rotating said roll, feeding a rotating Wire brush against said rotating roll to tear loose surface layers of fabric thereon, and feeding a rotating grinding wheel against said roll to grind off the loosened fabric layers and to smooth remaining fabric layers on the roll.

13. The method of refinishing a fabric polishing roll which comprises rotating said roll, feeding a rotating wire brush against said rotating roll from one side thereof to tear loose surface layers of fabric thereon, and simultaneously feeding a rotating grinding Wheel against the opposite side of said roll to grind 01T the loosened fabric layers and to smooth remaining fabric layers on the roll.

OSCAR A. WIDERBERG.

WALFRED A. WALLSTEN.

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

UNITEDsTATEs PATENTS Number y Name Date 1,424,482 Jannell Aug. 1, 1922 y 1,619,736 Kaufmann et al. Mar. 1, 1927 1,705,767 Izawa Mar. 19, 1929 l2,032,901 Angell Mar. 3, 1936 2,101,787 Amidon Dec. 7, 1937 2,127,210 Dunbar Aug. 16, 1938 2,270,446 Johnson Jan. 20, 1942

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