US1184972A - Machine for reducing and surface-finishing metal tubes, rods, and the like. - Google Patents

Description

M. B. LLOYD. MACHINE FOR REDUCING AND SURFACE FINISHING METAL TUBES, RODS, AND THE UKE.

APPLICATION HLED SEPT. 19. 1913- Patented May 30,1916.

4 SHEETS-SHEET 1.

. M. B. LLOYD. 7 MACHJNE FOR REDUCING AND SURFA'CETINISHING METAL TUBES, R058, AND THE LIKE.

APPLICATION FILED SEPT. 19. I913.

Patented May 30, 1916.

4- SHEETSSHEET 2- m-Mm.

IVI. B. L LOYD.

MACHINE FOR REDUCING AND SURFACE FINISHING METAL TUBES, RODS, AND THE LIKE.

APPLICATION FILED SEPT. 19. I9I3.

Patented May 916.

4 SHEETSS EE 3.

IVI. B. LLOYD.

MACHINE FOR REDUCING URFACE FINISHING METAL TUBES, RODS, AND THE LIKE.

LICATION FILED SEPT. I 9, I913- 1 1%9?%, Patented May 30, 1916.

4 SHEETS-SHEET 4.

MARSHALL BURNS LLOYD, 013 lllllllNQlVflNlllE, lvllIttll-ltltti'rlljtl, .lh dffiilill'ilblfiilt, 'ltll'lflldlltlil MENTS, TO THE ELYRIA TRON .85 STEEL COMPANY, Uh Ellfll'ltltit, OHTO, .l-l. fltlllftft tllttdw TION OF OHIO.

naonrnn non nnnncrn'o .ann sonraon-rrmtsnino- :rtnran moans, none, nan nit Specification of Letters Patent.

lt atented ltltay 3th iltlit ti original application fi1ed. August 7, 1912, Serial No. 7133551. Divided. and this application filed itepteinher Ill-l, 1913.

To all whom it may concern:

Be it known that l, lllansnann llrl. lhnoro, a citizen of the United States, and resident of Menominee. in the county of Menominee and State of Michigan, have invented certain new and useful Improvements in Man chines for Reducing and Surface-Finishing Metal Tubes, Rods. and the like. of which the following is a specification.

My invention relates generally to improvements in mechanisms for reducing metal tubing to specified circular cross sec tion and for finely polishing or surface fim' ishing the same.

This application is a division of my pending application Serial No. 713.851, tiled August 7th 1912. and directed to the process which is incidentally described herein.

The general object of my invention is to provide a mechanism by which it shall be possible to reduce metal tubing to specified size and to polish the same more rapidly and at less cost than can be done with known mechanisms.

l l here the terms tubc" and tubing are used in this specification and in the appended claims, they are to be read as meaning metal tubing generally, though relating more particularly to thin walled tubing.

My invention. resides in a machine of the construction and combination of parts hereinafter described. and adapted to hold the tubing positively against rotation while feeding it forward at constant speed and also adapted to subject the surface of the tubing to the high speed but reluctant rotative action of a large number of small approximately parallel cross rolls. whereby the tubing is gradually reduced to a circular form and provided with an outer skin hav-- ing a circumferential trend and which is highly polished.

The invention will be more readily understood by reference to the accompanying drawings. forming part of this specification, and in which Figure 1 is a plan view of a machine embodying my invention. Fig. 2 is a side elevation thereof. Fig. 3 is a longitudinal vertical section. considerably enlarged, on the line XX of Fig. 1. Fig. l is a further enlarged cross section on the line l l of Serial lilo. WtLWG.

Fig. .3. Fig. 5 is an end View o l? one or? the roller rings and a number of rolls. which completely fill same. l ig. G is a longitudinal section thereof. Fig. 7 is a view similar to Fig. 5 but showing rolls which do not completely till the annular space between the tube and the ring. llig. '5 is a longitir dinal section thereof showing the action out such rolls When in operation. Fin? 9 is a side view ol one of the rolls; and big. it] do picts a roll of modified form.

The mechanism shown herein may be d in the continuous tube mill that is described and claimed in Letters Patent No. 1.052.? .8653. granted llllay 28th. 1912, in which case the continuous or traveling rise herein marked A, will replace the traveling vise marked Til in. that patent. "(hi the other hand the heroin shown mechanism may be used for reducing and finishing successive and relatiroly short pieces of tubing.

One important step of my said process consists in holding the tube to be redi'iced. against rotation while it isndvancing. T do not attempt to treat the WllOlB length and surface of the tubing at one time but retrict the reducing and finishing :torces to one locality and by feeding-the tube forward to and through that locality the said forces progressively reduce the tubing and finish its surface. To thus hold the tubing against rotation and at the same time positively ad vance or feed it forward at a constant rate ol speed, ll employ the traveling or eontin" uous vise It, and preil'ierabl also employ a second traveling vise B. which. may be of less length and relatively of less strength. These traveling rises are lined upon a bench or table Z, and are driven by a train of gearing means being interposed to conrpen s to for the elongation o l the tubing between the two rises. due to the reduction of the tubing by the reducing and polishing mechanism. lP'rhna'i-ily each vise comprises an endless conveyor equipped with a plurality of pairs of laterally opening and closing jaws l t. in the Working stretches of the vises the It. are closed together upon the tube. its the jaws grasp the tube in this is o . rial moment in this case,

stantially constant rateof speed. The detail construction of the vises is not of mateand is clearly described in aforesaid patent. It maybe explained that the jaws of the vises are provided with groovesa, which fit the tube and- 'when opposing palrs of jaws are closed in the'working stretch of the device they subthe tubing.

anism or tool,

stantially inclose .the portion of tubing which they engage and an effective gripping of the tubing by the vise is thus insured. It,

may also be explained that the working.

stretches, and the jaw grooves thereof, belonging to the two vises A and B are arranged in .alinement so that the traveling tubing is indicated by the letter T. The direction oftravelof the tubing is indicated by arrows in Figs. 1,2and3.

' or the first several I circumferential, as opposed 6o tudinal grain of the body of the tubing. To

I perform the surface rolling operation at high speed, accomplishing sameby a plurality of annular series of small rolls which are confined circumferentially and with relationv to the tubing. These series I rotate rapidly, and each small roll thereof rolls upon the surface of the tubing at high speed and turns bodily aroundthe tubing many times per minute. The firstseries ofrolls, series of rolls, force the tubing fed thereto to'a round shape and may somewhatreduce its size.

circumference thanthe first and the tube in its passage is reduced in diameter to the extent of the difference between the internal circumference of the first annular series and that of the second annular series of rolls. I sometimes employ still other series of rolls of gradually diminishing internal or working circumferences, and by such means gradually .roll down or reduce the tubing to specified diameter and circumference. While thus reducing the size of the tubing to the extent determined by the prearrangement of the reducing rolls, those rolls at the same time gradually smooth, the surface of the tubing and form thereon a surface skin, the grain or trend of which is to the longiperfect the surface I prefer-to add one or more series of rolls distinguished by internal working circumferences substantially identical with that ofthe last series of reducing and surfacing rolls.

While I have mentioned the tubing as bepurpose. The next series of rolls is confined within a'smallering held against rotation and such holding as being an important part of my said process, it should be understood that the term holding the tubing against rotation, or the like, is relative or comparative, meaning that it must not be'permitted to rotateat the speed at which the reducing rolls rotate.

The high speed rolling mechanism D, appearing in .F igs. 1 and 2, will be best understood upon reference to Figs. 3 to 10. The parts 2 are bearing blocks containing bearings 3 and secured upon a bed plate Z on the table Z. i The bearings 3, are in exact alinement and contain two sleeves 4 and 5. Each sleeve contains a central hole 6, 6 to receive the tubing. In addition to the central opening, the sleeves containlarger chambers 4 and 5 closed at the discharge ends by screw ,plugs l", 5", respectively. The' plugs contain central openings for the tub.- ing The chambers 4' and 5' and 5 are likewise concentric with.the. axis of the tubing. Within each chamber 4 and 5 I provide a plurality of hardened steel races or rings R which are, internally, cylindrical. The rings are made to fit snugly within respective sleeves, and keys, 4 and 5, hold them against rotation in respective sleeves. The parts marked S are small cylindrical rolls, before referred to. These are shorter than the rings which contain them to insure a of illustration, all of these rolls in Fig. 3 are shown as of the same diameter. It will be noted that the rolls are held against longitudinal movement by ,internal abutments or flanges R, provided onthe ringsR for the The diameter of the tubing as it approaches the mechanism D is greater than the diameter of the tubing asit is discharged from that mechanism. 1 p The internal or working diameter of the proper race bearing. For clearness.

series of small rolls in the ring'R, at the rea cei'ving end of the mechanism D, is greater than that of any other series in the mechanism. The internal or working circumference of the series of rolls held in this first ring may he no greater than the circumferenceof the tube T at that point, or may be slightly less if desired. The next ring R, is working circumference;

slightly smaller in and such reduction of diameter proceeds from ring to ring, preferably until the last rings, including reached in the sleeve '5. The diminishing sizesof the rings are indicated by the dotted lines of Fig. 3, distinguished by the dimension marks W and V.

The rolls in each ring may bear that relation to the ring and the tube which is the wide ring R", are' depicted in Figs. 5 and 6, or their relation may be 'as depicted in'Figs. 7 and 8. In the case of Figs. 5 and 6, the rolls S may bear one against the otherand snugly fill the ring are concentric with the axis of the tubing. The sleeves 4y f rollers, as shown in Fig. 7.

Such rolls maintain positions substantially parallel with the axis of the tubing, when the containing ring ll is rotated about the same. In the case of Figs. 7 and 8 the rolls are relatively smaller or fewer and they as indicatedin Fig. 8, the rotation ofthe containing ring R causes one end of each roll to lag behind its other end so that the rolls assume oblique positions in the containing ring. In other words, each roll that is allowed such. latitude of movement within the ring, will bear upon the containing ring at its ends and will lie in a plane which intersects the axis of the tubing.

The parallel rolls of Figs. 5 and 6 serve to condense the metal of the tube and thereb reduce its diameter, and also serve to re l down and polish the tubes surface. The rolls of Figs. 7 and 8 perform the same functions but in addition they operate more efieovtively as cross rolls and tend to propel the e longitudinally. v

The sleeves 4: and 5 are q d wlth spedtive pulleys or drivers 7 and 8. Thrust bearings 9, arranged between the ends of the pulleys and the adjacent bearing blocks 2, prevent endwise movement of the sleeves 4 and 5 in their bearings. These pulleys 'l and 8 may be driven by belts 7 and 8'.

The rotation of the closely contacting rolls S has a tendency to twist the tubing 1, and when necessary to counteract this tendency, l preferto drivethe roll containing sleeves 4 and 5 in opposite directions, asincheated by the crossed belts shown in Fig. 2. I admit water under pressure to the roll containing sleeves, as by a supply pipe 11. The Water flows in opposite directions within the two sleeves and among the .rolls, finding escape at the end of the sleeves. in passing between the tube and the rolls, the water sufficiently lubricates the latter and cleanses both the rolls and the surface of the tubing, while keeping the temperature of the surface of the tubing at such a low point as to insure a smooth brightfinish. When a very high finish is desired I sometimes use soapy water as a lubricant.

llt will be understood that the cylindrical rolling surface of each roll S is a hardened and preferably ground surface. It will also be understood that the inner cylindrical surfaces of the several rings are likewise hardened and ground. The smoothness of these parts is transmitted or communicated to the surface of the tubes. The rolling action is so rapidthat the tubing may be fed through the mechanism at the rate of several feet per minute. p

. l prefer that the rolls in the receiving end of the mechanism shall be of the form and ar rangement shown in Figs. 7 and 8. When so tubing. However, the special advantage of i the Figs. 7 and 8 arrangement lies in the cross rolling effect of rolls arranged at slightly oblique angles to the tubing, which facilitates the reduction of the tubing.

l Vhere l rely upon the first series of small rolls to markedly reduce the diameter of the tubing, I prefer that the op ositely run ning rolls in the sleeve 5 shall e mostly of the form and arrangement shown in Figs. 5 and 6 to the end that they may counteract the twisting effect of the reducing rolls and. still avoid setting up a powerful reaction against the propelling effort of the rolls in the sleeve l.

The small-rolls may have smooth surfaces, as shown in Fig. 9, or may contain spiral clearance grooves, as shown. in Fig. 10. ll find the smooth rolls to be better under most circumstances.

It is evident that the reducing effect of each set of rolls is limited to a minute frac fact it follows that in the surface skin of the tube the longitudinal grain or trend of the metal is converted into a circumferential or transverse'trend or grain, and this skin very readily submits to the cross rolling and sweeping action of the rolls, ultimating in the production of an extremely smooth, fine finish or polish. It should be observed that the rolls are smaller than the, tube, a great number thereof attacking its surface. Also the rolls are of greater len th than diameter.

Attention is called to the position of the several sets of rolls. lit will he noted that they are separated by spaces which are shorter than the small rolls. Finch arrangement avoids freeing the 'metal between the lttl several series and prevents the spiraling or marking of'the tube surface.

Thus far in my experience I have secured the best results by feeding the tubing at. a speed of from three to five feetper minute, and by rotating the roll containing sleeve orysleeves at a speed of several thousand revolutions per minute.

I claim 1. The herein described machine compris ing a rotary sleeve having a central tube opening and containing a plurality of internally cylindrical rings each in turn containing a series of cylindrical tube-rollingrolls.

2. The herein described machine comprising a plurality of concentric internally cylindrical rotary rings filled with a series of smaller cylindrical tube rolling rolls, means cylindrical rolls, means circumferentially and longitudinally restraining said rolls in said element, means for rotating said element, and mechanism for holding the tube against rotation and advancing it through said element.

The herein described tube finishing and polishing machine, comprising a sleeve in combination with a plurality of series or cylindrical rolling rolls arranged therein to form a central recess, and means for rotating said sleeve.

6. The herein described tubefinishing and polishing machine comprisingf-in combination, a sleeve mounted for rotationQa plurals ity of internally cylindrical rings centrally arranged therein and fixed to rotate therewith, and a plurality of longitudinally disposed rolls arranged in each ring and. shorter than the same and defining a central openingthrough the sleeve.

7. The herein described tube finishing and polishing machine compris ng in cmnlnna- .tion a sleeve, :1 number of annular series of cylindrical rolls arranged therein, means for rotating the sleeve, and means for holding a tube against rotation in said sleeve.

8. The hereindescribed tube-finishing and polishing machine comprising in combination, a sleeve provided with a central open I ing and mounted for rotation. a plurality of internally cylindrical rings arranged within the sleeve, each ring encircling a plurality of shorter rolling rolls, end abutments for said rolls, means for rotating the rings, and

'means for holding a tube against rotation when acted upon by said rolling rolls.

9. In a machine of the class described the combination of'a sleeve mounted for rotation, a plurality of internally cylindrical rings arranged Within the sleeve and fixed to rotate therewith, a plurality of cylindrical rolling rolls arranged Within each ring, and means for holding a tube against rotation when subjected to the actionof the rolling rolls.

10. In a device of the class described a sleeve containing a central opening, a plurality of internally cylindrical rings arranged therein each of said rings containing and guiding a plurality of cylindrical rolling rolls, which define a central opening or" substantially the size of the tube to be treated, means for holding a tube against rotation, and means for forwarding a tube through said central. opening.

' 11. In a device of the class described, the combination of a sleeve mounted for rotation, a plurality of internally cylindrical rings fixed within the sleeve to rotate therewith, a plurality of cylindrical rolling rolls arranged in each ring, means for holding a tube against rotation when acted upon by the rolling rolls, and means for forwarding a tube through the sleeve.

12. The herein described tube finishing and polishing machine comprising in combination a sleeve, a plurality of annular series of cylindrical rolls rotatably held therein and arranged to define a central openin and means for holding the rolls against longitudinal movement.

13. The herein described tube-finishing machine comprising in combination asleeve arranged for rotation, a plurality of internally cylindrical rings ar 'anged therein, an annular series of cylindrical rolls arranged within each ring and shorter than the same, abutments for said rolls, the rings and rolls together defining a central openin and means for holding the rolls against longitudinal movement.

ll. The herein described tube-finishing machine comprising in combination a sleeve arranged for rotation, a plurality of internally cylindrical rings arranged therein. an annular series of small rolls arranged within each ring, the rings and rolls together dclining a central opening. means for holding the rolls against longitudinal movement, and means for forwarding a tube through the central opening.

15. The herein described tube-finishing machine comprising in combination a sleeve arranged for rotation, a. plurality of internally cylindrical rings arranged therein, an annular series of cylindrical rolling rolls arranged within each ring, the rings and rolls lOO i ea-eve together defining a central opening, means for holding the rolls against longitudinal movement, and means for holding a tube against rotation when acted upon-by said rolling rolls. A

16. The herein described tube-finishing machine comprising in combination a sleeve arranged for rotation, a plurality of internally cylindrical rings arranged therein, an annular series of cylindrical rolls Within each ring, the rings and rolls together defining a central opening, means for holding the rolls against longitudinal movement, and means for forwarding a tube through the opening and for holding it against rotation While passing therethrough. i

17. The herein described tube-finishing and polishing machine comprising a sleeve in combination with a plurality of annular Series of cylindrical rolls, arranged for rotation therein, means for rotating the sleeve, and means for supplying alubricating liquor to the rolls.

18. In a machine of the class described, the combination of a sleeve mounted for rotation, a plurality of internally cylindrical rings arranged therein and fixed to rotate therewith, an annular series of cylindrical rolling rolls arranged within each ring means for rotating said rings,.means for supplying a lubricating liquor to the rolls, and means for holding the rolls against longitudinal movement.

19. In a machine of the class described, the combination of a sleeve mounted for rotation, a plurality of internally cylindrical rings arranged therein and fixed to rotate therewith, an annular series of cylindrical rolling rolls arranged withln each ring, means for rotating sald rings, means for supplying a lubricating liquor to the rolls, means for holding the rolls against longitudinal movement, and means for forwarding a tube through the rings.

20. In a machine of the class described the combination of a sleeve mounted for rotation, a plurality of annular series of cylindrical rolling rolls arranged within the sleeve and defining a central opening, means for rotating the sleeve and bearings ar- -ranged to take the end thrust caused .by

the movement of the tube therethrough.

21. The herein described tube-finishing and polishing machine, comprising a sleeve arranged for rotation and constraining a plurality of cylindrical rolling rolls, means for rotating said. sleeve, tube forwarding means, and end thrust bearings for saidsleeve. i

22. The herein described tube-finishing and polishing machine, comprisingin combination a sleeve arranged for rotation and constraining a plurality of cylindrical rolling rolls, means for rotating said sleeve, tube forwarding means, and an end thrust bearing for said sleeve, and means for hold ing the tube against rotation when acted upon by said rolling rolls.

23. In a machine of the class described a sleeve containing a central opening, a plurality of internally cylindrical rings arranged therein, and an annular series of cylindrical rolls arranged within each ring, bearings tor rotatably supporting said sleeve, and formed to define a gradually di- .m1n1shing central opening.

26. The herein described tube finishing and polishing machine, comprising in combination a sleeve, a plurality of series of annular rolling rolls arranged Within the sleeve, and formed to define a gradually diminishing central opening, and a. plu rality of elongated rolls at the end of the reducing series and formed to define an opening of substantially the same size as the last annular series of rolls forming the diminishing opening.

27. The herein described tube finishing and polishing machine, comprising a sleeve mounted for rotation, in combination with a plurality of rings arranged within the sleeve and fixed to rotate therewith, an annular series of rolling rolls arranged with in each of the rings and formed to define a diminishing central opening, and a single elongated ring arranged adjacent the last of the reducing rolls and containing an annular series of elongated rolling rolls defining an opening substantially the same size as that defined by the last of the reducing series.

28. The herein described tube finishing and polishing machine, comprising in corn rolls and containing an annular series of I elongated rolling rolls defining an openingsubstantially the same size as thatdefined by the last of the reducing ser1es,'and means for holding the tube against rotation While passing through said mechanism.

29. The herein described tube finishing and polishing machine, comprising in combination a sleeve mounted for rotation, a plurality of rings arranged within the sleeve and fixed to rotate therewith, an annular series of rolling rolls, arranged within each of the rings and formed to define a diminishing central opening, a single elongated ring arranged adjacent the last of the reducing rolls and containing an annular series of elongated rolling rolls defining an opening substantially the same size as that defined by the last of the reducing series, means for forwarding the tube through said mechanism, and means for holding the tube against rotation therein.

30. The hereindescribed tube finishing and polishing machine, comprising in combination a sleeve mounted for rotation, a plurality of rings arranged within the sleeve and fixed to rotate therewith, an annular series of rolls arranged within each of the rings and formed to define a diminishing central opening, a single elongated ring arranged adjacent the last of the reducing rolls and containing an annular series of elongated rolling rolls defining an opening substantially the same size as that defined by the last of the reducing series,

a and means for holding the said rolls against longitudinal and radial movement.

31. In a machine of the class described,

the combination of two sleeves mounted for rotation, a plurality of annular series of cylindrical rolls arranged in each sleeve and positioned to define a central opening therethrough, and means for rotating said sleeves in opposite directions.

32. In a machine of the class described. the combination of two sleeves mounted for rotation, a plurality of annular series of cylindrical rolls arranged in each sleeve and positioned to define a central opening therethrough. means for rotating said sleeves. and means for forwarding atube through said mechanism.

In a machine of the class described, the combination of two sleeves mounted for rotation, a plurality of annular series of cylindrical rolls arranged in each sleeve. and positioned to define a central opening therethrough, means for rotating' said sleevesin opposite directions, and means for forwarding a tube through said mechanism and for holding it against rotation therein.

34. :In a device of the class described, the combination of two sleeves mounted for rotation, a plurality of internally cylindrical race rings arranged within said sleeves and fixed to rotate therewith, an annular series of cylindrical rolls arranged to rotate within each ring. ing rotation to said sleeves and rings.

' In a device of the class described, the combination of two sleeves mounted for rotation, a plurality of internally,cylindrical and polishing machine,

and means for i mpartf race rings arranged within said sleeves and fixed to rotate therewith, an annular series of cylindrical rolls arranged to rotate w1tl-- in each race ring, means for imparting rotation to said sleeves and rings, and a removable plug in each sleeve to permit the removal of said rings and rolls.

36. In a device of the class described, the combination of two sleeves mounted for rotation in opposite directions, a plurality of rings arranged within said sleeves and fixed to rotate therewith, an annular series of and polishing machine, comprising in combination two sleeves mounted for rotation, a plurality of annular series of rolls arranged within the sleeves, means for rotating the sleeves in opposite directions. and means for forwarding a tube through said sleeves. as and for the purpose specified.

39. The herein described tube finishing and polishing machine, comprising in combination two sleeves mounted for rotation. a plurality of annular series of rolls arranged within the sleeves, means for rotating the sleeves in opposite directions, and means for holding the tube against rotation in its passage through said sleeves.

40. The .herein described tube-finishing comprising in combination two sleeves mounted for rotation, a plurality of annular series of rolls arranged within the sleeves. means fbr rotating the sleeves in opposite directions. means for forwarding a tube through'said sleeve. and means for holding the rolls against longitudinal movement in said sleeves.-

41. In a device of the class describcd,-the combination of two sleeves mounted for rotation, a plurality of annular series of rolling cylindrical rolls arranged within said sleeves, means for rotating said sleeves. and

thrust bearings to take the end thrust from each of said sleeves.

4-9. In a device of the class described, the

combination of two longitudinally alincd sleeves. a plurality of similar length rolling rolls arranged in annular series within said sleeves, and a plurality of relatively long rolling rolls arranged in one of the sleeves as and for the purpose specified.

43. The herein described tube-finishing and polishinganachine. comprising in combination two sleeves, a plurality of rings 1,tet-,trm

arranged within the sleeves and fixed to ro-- tate therewith, an annular series of rolls arranged Within each of the rings, a number of the annular series of rolls being of similar length and a number thereof at one end of one of the sleeves being relatively elongated.

44. The herein described tube-finishing and polishing machine comprising in combination two sleeves arranged for rotation, a plurality of rolls arranged in a number of annular series, and formed to provide a sleeves.

45. The. herein described tube-finishing machine comprising in combination two sleeves, a plurality of rolling rolls arranged in a number of annular series within the sleeves, and formed to provide a gradually diminishing central opening through the sleeves, and a plurality of elongated rolls at one end of the series oi rolls forming the diminishing central opening.

46. The herein described tube-finishing and polishing machine, comprising in combination a sleeve mounted for rotation, a pluralityof rings arranged therein and fixed to rotate therewith, an annular series. of rolls arranged within eachgring', a number, of the annular series being of the same length, and some thereof being elongated, said annular.series-being formed to define an opening of varying size, as and tor thef purpose specified, n tT-flhe herein described tube-finishmg and polishing machinc, ',comprising in com bination a sleeve mounted for rotationpa plurality of rings arranged therein and fixed to rotatetherewith, an annular series of rolls arranged within each ring, a number of the annular series being of the same length, and some-thereof being elongated,

said annular; series being formed to define an openingot "ary'ingwsize, and meanst'or forwarding a through said mechanism.

48. The here 11 "described tube finishing and polishing machine, comprising in combination a sleeve mounted for rotation, a plurality of rings arranged therein and fixed to rotate therewith, an annular series of rolls arranged within each ring. a number thereof of the annular series being of the same lengthpand some thereof being elongated, said annular series being formed to define an opening of 'varyingsize, means for forwarding a tube through'said mechanism, and means for holding a tube against rotation iniits passage therethrough.

49; In a device of theclass described, two spaced elongated tube.forwarding mechanisms, in combination with a polishing and finishing machine interposed therebetween, and comprising a sleeve mounted for rotation, and a plurality of annular series of tion, a plurality of annular series of small cylindrical rolls arranged within the sleeve and substantially defining a central opening 'therethrough, and means for rotating said gradually diminishing central opening, and means for imparting rotation to SdlCl H within each sleeve, and means for rotating each sleeve separately.

52. The herein described mechanism com prising in combination two spaced alined tube-forwarding machines, and a tubefinishing and polishing machine interposed therebetween, and comprising a rotatable sleeve, and a number of annular series of rolling rolls arranged within the sleeve and formed substantially to define a central opening diminishing in size from one end to the other.

53. In a device of the class described, two alined spaced tube forwarding machines, in combination with a tube-finishing and pol. ishing mechanism, interposed therebetween, and comprising a sleeve mounted for rota tion, a number of annular series of rolling rolls arranged within-the sleeve, a number thereof formed todefine, a central opening diminishing in size from one end to the other, and anaannularseries of elongated rolling rolls arranged at one end thereof and formed to define acentral opening of substantially the dimensions of the smallest of the openings defined by the other rolls, as and for the purpose specified.

54. In a machine of the class described the combination of two spaced tube-forwarding machines with an interposed polishing 1na chine, the polishing machine comprising two sleeves mounted for rotation. a plurality of abutting rings arranged within each sleeve, each ring containing an annular series of rolling rolls, the rolls and rings be: ing formed to define an opening diminishing in size gradually from one end. to a short distance from the other end, a series of elongated rolls arranged to define an opening of of any single roll.

56. The herein described improvement in I machines for polishing tubing Without an internal support, comprising -means for holding tubing against rotation while for- 10 warding it, in combination with an internally Cylindrical ring and means for rotating the same at high speed, a series of small l rolls arranged within said ring as a race,

abutments' for said rolls at the ends of said ring, and said ring and'contained rolls being positioned to receive the tubing from said holding and forwarding means.

57 The" improvement -herein described, comprising a drum open at its ends, mounted for rotation at high speed and containing a roll-race, in combination with a series of rolls in said race, andmeans axially confining said rolls in said race.

58. The improvement herein described, comprising a drum open at its ends, mounted for rotation at high speed and containing a roll-race and roll-end abutments, in combination with a number of rolls spaced apart in said race and presenting their ends to said abutments.

59. The improvement herein described, comprising a drum open at its ends, mounted for rotation at high speed and containing a roll-race and roll-end abutments, in combination with a number of rolls in said race and presenting their ends to said abutments, and means axially spacing said rolls in said race.

In testimony whereof, I have hereunto set my hand, this 16th day of Sept., 1913, in the presence of two subscribing witnesses.

MARSHALL BURNS LLOYD.

Witnesses:

ERNEST J. Risnon, C. M. ESTES.

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