US1998909A - Pipe wrapping machine - Google Patents

Description

April 23, 1935. L, s. RosENER 1,998,909

PIPE WRAPPING MACHINE v Filed April 12, 1927 2 SheefLS-Shee l u g llunuullunnm April 23, 1935. L. s'. ROSENER 1,998,909

PIPE WRAPPING MACHINE Filed ApFil l2,` 1927 2 Sheets-SheefI 2 /N VE/V T02- EL AND s. @QSE/VER By 6M( Patented Apr. z3, 193s l 1,998,909.

UNITED 'sTATl-:s PATENT OFFICE PIPE WRAPPING MACHINE Leland S. Rosener, San Francisco, Calif., assignor to 'I he Paraifine Companies, Inc., San Francisco, Calif., a corporation of Delaware Application April 12, 1927, Serial No. 183,081

53 Claims. (Cl. 242-11) My invention relates to a machine for wrapchine of my invention comprises a frame, proping objects, and one of the objectsof the mavided with means for supporting it upon the pipe chine is to provide means for wrapping a proto be wrapped. Areel on whicha quantity of the tective strip of material about the pipe compriswrapping material is held in a roll encircling the ing a pipe line already in position in the ground. pipe is arranged on the frame, and a secondary 5 Another object of the invention is the provision reel carrying an additional quantity of wrapping of a pipe wrapping machine by which protective material is mounted with the first reel for orbital strips are wrapped about a xed pipe, and emrotation about the pipe. Means are provided for bodying means for applying an adhesive and rotating the reels to wind the strips about the pipe Waterproof fluid to the pipe and wrapping to hold and simultaneously to advance the frame along 10 the latter in place and seal the pipe with an imthe pipe so that the wrapping strips are applied to pervious covering which is water and decay proof. the pipe spirally one over the other. Means are Another object of the invention is the provision also provided for applying a sealing fluid such as of improved means for holding the supply roll of hot asphalt between the pipe and the wrapping wrapping material during the operation of the material, so that the wrapping strips are ad- 16 machine. hesively retained in place and the laps sealed My invention possesses many other objects and with an adhesive, waterproof and durableI Inavaluable features, some of which will be set forth terial. i l in the following description of my invention which In greater detail, the wrapping machine of my :.'0 is illustrated in the drawings forming part of the invention comprises a frame 2, provided with roll- 2Q specification. It is to be understood that I do not ers 3, for supporting the frame on the pipe 4 which limit myself to the showing made by the said is to be wrapped. Shoes 6 supported on the description and drawings, as I may adopt varyframe on each side of the pipe prevent lateral ing forms of my invention within the scope of the displacement of the frame. Extending laterally claims. from the frame is an arm 'I carrying a wheel 8 25 Referring to the drawings: adapted to rest on'a plank 9 temporarily arranged Figure 1 is a plan view showing the wrapping at the side of the ditch in which is the pipe line. machine of my invention in position for applying In order to use our machine to wrap a pipe line a wrapping strip on a pipe line; and Figure 2 is already installed, it is necessary tovuncover the :lo a side elevation of the same. pipe by means of ditching around it and in doing Figure 3 is an end elevation of the machine, the this, the dirt may be leveled off on one side so view being taken in the direction of the arrow 3 as to provide an approximately true surface II of Figure 2. on which the planks 9 may be conveniently laid. Figure 4 is a sectional view Vshowing the driving The mechanism may thus travel along the pipe :t5 gear for the reel and distributor head. The plane without danger of tipping over. 35

`of section is indicatedby the line 4-4 of Figure 2. Journaled in suitable bearings I2 in the frame Figure 5 is a" transverse sectional view thru 2 is a shaft I3 driven by the gears I4 from the the adhesive fluid distributor head,l the plane of motor I6 connected by flexible conductors with section being indicated by the line 5---5` of Figany suitable source of power. Splined on the ure 2. e shaft I3, and movable therealong by means of the 40 Figure 6 is a longitudinal sectional view thru handle I1 is a friction wheel I8 adapted to engage the upper part of the distributor shown in Fgthe face of the friction disk I9 arranged on the ure 5. The plane of section is shown by the line shaft 2| and pressed by the spring 22 into engage- 6-3 of Figure 5. ment with the friction wheel. The shaft 2| is v is Figure "I is a sectional view of the secondary also connected by gears 23, shaft 24 and gears 26 45 strip reel. Line 1 -'I in Figure 2 indicates the with a shaft 21 on which a drum 28 is journaled.

plane in which the view is taken. A clutch 29 controlled by the handle 3| provides Figure 8 is a transverse sectional view thru means for coupling the shaft 21 to the drum. the main wrapping strip reel. The plane of sec- Wound about the drum is a cable 32 one end of U tion is indicated by the line 8-8 of lFigure 2. which is adapted to be secured to any convenient 50 Figure 9 is a sectional View taken in a vertical fixed object in advance of the frame of the maplane coincident with the axis of the reel shown chine, and rotation of the drum therefore effects in Figure `8. The plane of section is indicated by the movement of the machine along the pipe line. the line 9 9 of Figure 8. The speed of this movement relative to the speed 515' In bradly dCSCrptive terms, the wrapping maof the main shaft I3 is adjustably controlled by 55 y the friction disk.

Fixed on the main shaft i3 is a pinion-33 in mesh with the annular gear or rotor 34, arranged in a bearing 36 which as shown in Figure 4 extends around the upper two-thirds of thejournal 31 of the gear, thus leaving a gap in the lower portion of the bearing. The rotor isprovided with a removable segment 34a so that when the segment is taken out of the rotor, the machine may be let down over the pipe. With the securing of the segment once more in place by means of the screws 38, the rotor surrounds or encircles the pipe.

Extending from diametrically opposite points on the rotor are arms 39 on the ends of which is pivotally mounted a reel frame comprising the side members 4l and the annular plates 42. Journaled in the annular plates 42 are a series of circumferentially spaced rollers 43 each of which is provided with an annularly grooved hub 44 on each side. These annularly grooved hubs provide a journal for the annular plates 46 which comprise rotary ilanges for the rollers. In orderto permit the assembly of the reel over the pipe line, the annular plates 42 and 46 are also made in two portions as shown best in Figures 3 and 9, and each is adapted to be secured together by the swing screws 41 locked'in lugs 46 by the wing nuts 49.

The reel thus formed is adapted to hold a roll 6| of wrapping material or strip 62 and because of the friction reducing effect of the rollers 43, this roll may be unwound from the inside as the strip is applied to the pipe. Means are provided for adjusting the angular relation of the reel to the pipe and this is accomplished by providingthe end of one of the arms 39 with an upturned end 53 which has pivotally mounted therein a lug 54 thru which is threaded a spindle 66, passing loosely thru a lug 51 on the frame 4i and prevented from axial movement in the lug 61 by the round faced collars 58. A hand wheel 69 permits rotation of the spindle to fix the angular position of the reel.

When the reel is arranged with its axis coincident withthe axis of the pipe. it is in position to receive its load of wrapping material from the supply roll 6D suitably supported on the frame members 6I directly above the reel. In order to wind on the supply of wrapping material, the clutch 29 is disconnected and the end of the strip 52 from the supply roll applied on the side of the reel as indicated by the dotted lines in Figure 8. With the starting of the motor I6, the reel is rotated until a sufficient amount of the wrapping material has been accumulated, whereupon the material maybe torn and the loose end secured by a dab of asphalt or other convenient means. In applying the wrapping material to the pipe, the inner end of the roll on the reel is placed about one of the rollers 43 as best shown in Figure 8 and started about the pipe by hand. The roller 43a about which the strip passes is preferably a little larger than the other rollers, and a spring held lever 62 is provided with a shoe 63 arranged to bear against the strip as it passes around the roller to maintain a certain degree of tension upon the strip. This is particularly desirable as the end of ythe strip approaches and the resistance to movement of the roll on the reel decreases.

The' angular relation of the reel to the pipe is determined by the ratio between the rotational speed of the reel and the speed of forward movement of the main frame along the pipe; and this ratio, the angular adjustment of the reel and the width o! the strip of wrapping material are so arranged and proportioned that the desired amount of lapping of the spiral strip is secured. If desired this lap may be so great that with a. single strip, the covering will consist of two or even more thicknesses of material. With the clutch 29 engaged and the other adjustments properly made, the reel is rotated simultaneously with the rotation of the drum 28; and with the progression of the entire machine along the pipe, the wrapping strip is drawn o'i the inside oi the roll 5I, the entire roll rotating upon the rollers of the reel.

Means are also yprovided for applying a second wrapping strip upon the first. The first or main wrapping strip is preferably a felt base material impregnated with a bituminous compound; and under certain conditions it is desirable to overlay this wrapping with a thinner covering of paper. In order to permit this, a secondary reel is mounted on the side of the reel just explained and rotates with it in an orbital path about the pipe. This secondary reel comprises a frame 66,

, removably secured upon the outer annular plate 42 of the main reel. A roll 61 of wrapping material or strip 68 is journaled in the frame, and the strip passes over a guide roller 69 and under a shoe 10 pressed by the spring 1| so that tension upon the strip is maintained. Of course the space about a pipe line provided by ditching is necessarily quite limited and therefore the thicker and more bulkly wrapping material 52 is wound upon its reel in a roll surrounding the pipe. However for thin wrapping material, it is practicable to mount the roll on a reel for orbital rotation about the pipe in the manner just described. rolls 61 easy, the material is wound upon a mandrel 12 having cone recesses adapted to set between the cone centers 13, one of which is fixed land the other of which is arranged on the spring pressed shaft 14 slidably disposed within the hollow lug 16 xed on the frame 66. The secondary light wrapping strip is started by hand about the pipe on which the heavy rst wrapping is already begun; and as the reels rotate, the light strip is applied in a spiral wrapping over the underlying heavy strip.

Means are also provided for applying a sealing uid to the pipe and first heavy wrapping strip while the latter is being applied and preferably this iluld is hot asphalt so that the strip is not only cemented into place but all joints sealed with a decay-resisting and waterproof material. Fixed on the arms 39 between the rotor 34 and In order to make thc insertion of the l the reel 42-43-46 is an annular trough-like lation 8l to prevent waste of heat, and this is retained in place by a metallic shell 82.

The chamber is fed thru the pipe 83, connecting the rim with the tank 84, in which iluid asphalt is placed from time to time' as the wrapping proceeds. Both the 'rim and the chamber are made in sections as shown in Figure 5 te permit them to be assembled over thel pipe. The

head thus constituted and positioned just ahead of the wrapping strip, is a pipe or distributor 9i having a slot 92 in the end thereof in ysuch position as to discharge a at jet of the heated sealing fluid directly between the pipe and the wrapping strip. The distributor -rotates with a lunar motion about the pipe and the sealingfiuid is applied'just in front of the strip as it is wound upon the pipe. This avoids cooling and thickening of the sealing fluid and contributes to a tight and even wrapping. Usually enough sealing iluid appears on the surface of the first heavy wrapping to hold the light secondary wrapping in place, if the latter is applied. but if desired the distributor pipe may extend out far enough to apply sealing fluid directly between the secondary strip and the first covering.

I claim:

1. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, and means for mounting the reel with its axis at a selected angular relation with the axis of the pipe.

2. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for mounting the reel with its axis at a selected angular relation with the axis of the pipe, and means for rotating the reel to apply the wrapping material to the pipe.

3. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for mounting the reel with its axis at a selected angular relation with the axis of the pipe, meansfor rotating the reel to apply the wrapping material to the pipe, and means for moving the reel along the pipe.

4. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for mounting the reel with its axis at a selected angular relation with the axis of the pipe, means for rotating the reel to apply the wrapping material to the pipe, means for moving the reel along the pipe, and means for variably adjusting the ratio between the speed of rotation of the reel and the speed of progression along .the pipe. 5. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for rotating the reel to apply the wrapping material to the pipe, and means for applying a fluid to bind the wrapping material to the pipe.

6. A pipe wrapping machine comprising 'a reel for holding the wrapping material in a roll encircling the pipe, means for rotating the reel to apply the wrapping material to the pipe, means for moving the reel along the pipe at a speed bearing a selected ratio to the speed of rotation of the reel, and means for discharging a fluid between the wrapping material and the pipe.

'7. In a pipe wrapping machine, a plurality of rollers circumferentially journaled about the pipe and adapted to hold a roll of wrapping material,

means for bodily rotating the rollers about the pipe to transfer the wrapping material from the rollers to the pipe, and means for advancing the .rollers along the pipe.

8. In a pipe wrapping machine, a plurality of rollers circumferentially journaled about the pipe and adapted to hold a roll of wrapping material,-

means for bodily rotating the rollers about the pipe to transfer the wrapping material from the rollers to the pipe, means for advancing the rollers along the pipe, and means for applying a fluid between the wrapping material and the pipe.

9. In a pipe wrapping machine, a reel frame adapted'to encircle the pipe, a plurality o f rollers journaled circumferentially in said frame to hold a roll of wrapping material, means for rotating said frame to wind the wrapping material upon the pipe, and means for advancing the frame along the pipe.

10. Inra pipe wrapping machine, a reel frame adapted to encircle the pipe, a plurality of rollers journaled circumferentially in said frame to hold 'a roll of wrapping material, means for rotating said frame to wind the wrapping material upon the pipe, means for advancing the frame along the pipe, and means for mounting the frame at a selected angular relation with the pipe.

y11. In a pipe wrapping machine, a reel frame adapted to encircle the pipe, a plurality of rollers journaled circumferentially in said frame to hold a roll of wrapping material, means for rotating said frame to wind the wrapping material upon the pipe, means for advancing the frame along the pipe, and means for applying a uid between the wrapping material and the pipe.

12. In a pipe wrapping machine, a reel frame adapted to encircle the pipe, a plurality of rollers journaled circumferentially in said frame to hold a roll of wrapping material, means for rotating said frame to wind the wrapping material upon the pipe, and a secondary frame arranged on one' side of the reel frame to carry a roll of wrapping material in orbital rotation about the pipe.

13. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for rotating the reel to apply the wrapping material to the pipe, and means for applying a fluid to the pipe and wrapping material.

- 14. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for rotating the reel to apply the Wrapping material to the pipe, means for applying a fluid to the pipe and wrapping material, and means for heating the fluid.

15. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means for rotating the reel to apply the wrapping material to the pipe, a chamber for fluid adjacent the reel, means for heating the chamber and means for discharging the heated fluid upon the pipe and wrapping material.

16. In a. pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and connected for rotation with said rotor, means for rotating the rotor, and means for moving the rotor along the pipe.

17. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and connected to rotate with said rotor,means for rotating the rotor, means for moving the ro- .rotation with said rotor, and means for supplying the distributor with fluid.

i8. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and connected to rotate with said rotor, means for rotating the rotor, means for moving the rotor along the pipe, an annular reservoir mounted for rotation with the rotor,.and a fluid distributor for discharging uid from the reservoir upon the pipe and wrapping material.

19. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and connected to rotate with said rotor, means for rotating the rotor, means for moving the rotor along the pipe, a non-rotative rim, an annular reservoir journaled within the rim for rotation with thearotor, a fluid distributor fixed on the reservoir, and a supply conduit connected to the reservoir thru the rim.

20. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and mounted for rotation with said rotor, means for rotating the rotor, and means for varying the angular relation between the reel and the pipe.

21. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and mounted for rotation with said. rotor, means for rotating the rotor, means 'for moving the rotor along the pipe, and means for varying the angular relation between the reel and the pipe.

22. In a machine for wrapping objects, a reel comprising a frame, a series of rollers circumferentially journaled in said frame, and an annular plate forming a flange for the series of rollers and journaled at the side thereof.

23. In a machine for wrapping objects, a reel comprising a frame, a series of rollers circumferentially journaled in said frame and each provided with an annular groove, and a ilange for the series of rollers comprising a ring journaled in said roller grooves.

24. In a machine for wrapping objects, a rotor adapted to encircle the object, a pair of arms extending from the rotor, a frame pivotally mounted on said arms, and a series of rollers circumferentially journaled in said frame for holding the wrapping material in a roll surrounding the object.

25. In a machine for wrapping objects, a rotor adapted to encircle the object, a pair of arms extending from the rotor, a frame pivotally mounted on said arms, a series of rollers circumferentially journaled in said frame for holding the wrapping material in -a roll surrounding the obiect, and means for rotating the rotor.

26. In a machine for wrapping objects, a rotor adapted to encircle the object, a pair of arms extending from the rotor, a frame pivotally mounted on said arms, a series of rollers circumferentially journaled in said frame for holding the wrapping material in a roll surrounding the object, means for rotating the rotor and means for advancing the rotor along the pipe.

27. A pipe wrapping machine comprising a frame, a reel for holding the wrapping material arranged on the frame, a drum, a cable on the drum and adapted to be secured to a xed object, power means for simultaneously driving the reel to wrap the material about the pipe and driving the drum to move the frame along the pipe. and

a speed-change device interposed between the power means and one of its driven means to vary the ratio of speeds therebetween.

28. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and mounted for rotation with said rotor, means for rotating the rotor, and friction-reducing means on the reel to facilitate movement of the roll thereon.

29. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the wrapping material in a roll encircling the pipe and mounted for rotation with said rotor, means for rotating the rotor, means for moving the rotor along the pipe, an annular reservoir mounted for rotation with the rotor, a iiuid distributor for discharging fluid from the reservoir upon the pipe and wrapping material, and means for heating the uid in said reservoir.

30. In a pipe wrapping machine, a rotor adapted to encircle the pipe, a reel for holding the -wrapping material in a roll encircling the pipe and mounted for rotation with said rotor, means for rotating the rotor, means for moving the rotor along the pipe, a lnon-rotative rim, an annular reservoir journaled within the rim for rotation with the rotor, a fluid distributor fixed on the reservoir, and heating means disposed in said rim.

31. A pipe wrapping machine comprising a frame including a reel for holding wrapping material in a roll encircling the pipe, a secondary reel for holding a roll of wrapping material lat one side of the pipe and mounted on the frame, and means for rotating the frame to transfer the wrapping material from each reel to the pipe.

32. A pipe wrapping machine comprising al frame including a reel for holding wrapping material in a roll encircling the pipe, a secondary reel for holding a roll of wrapping material at one side of the pipe and mounted on the frame, means for rotating the frame to transfer the wrapping material from each reel to the pipe, and means for moving the frame along the pipe.

33. A pipe wrapping machine comprising a frame including a reel for holding wrapping material in a roll encircling the pipe, a secondary reel for holding a roll of wrapping material atl one side of the pipe and mounted on the frame, means for rotating the frame to transfer the wrapping material from each reel to the pipe, and means for changing the angular relation of the frame to the pipe.

34. A pipe wrapping machine comprising a frame including a reel for holding wrapping material in a roll encircling the pipe, a secondary reel for holding a roll of wrapping material at one side of the pipe and mounted on tlie frame, means for rotating the frame to transfer the wrapping material from each reel to the pipe, means for moving the frame along the pipe. and

vmeans for changing the angular relation of the ing the wrapping material in a roll encircling the pipe and pivotally mounted on said rotor, and means on the frame for rotating the rotor and simultaneously advancing the frame along the pipe.

37. A pipe wrapping machine .comprising a main frame, an annular rotor adapted to encircle the pipe and journaled on said frame, a reel for holding the wrapping material in a roll encircling the pipe and pivotally mounted on said rotor, means on the frame for rotating the rotor and simultaneously advancing the frame along the pipe, and means for discharging a iluid between the wrapping material and the pipe.

38. A pipe Wrapping machine comprising a reel for holding the wrapping material in a roll encircling'the pipe, means for rotating the reel to apply the wrapping material to the pipe, and means for moving the reel along the pipe.

39. The method of wrapping a pipe which comprises forming a roll of wrapping material encircling the pipe, placing the inner end of the roll on the pipe, and then rotating the roll and advancing it axially of the pipe to lay the wrapping material in spirals about the pipe.

40. A pipe Wrapping machine comprising a rotor adapted to encircle the pipe, means mounted on said rotor for holding the wrapping material, means for rotating the rotor to transfer the wrapping material from the holding means to the pipe, means including a rotatable member for moving the rotor along the pipe, means for varying the relative speed of rotation between the rotatable member and rotor, and

ymeans for applying a fluid to bind the wrapping material to the pipe.

4l. A pipe wrapping machine comprising a reel for holding the Wrapping material in a roll encircling the pipe, means including a rotatable member for moving the reel along the pipe, means for rotating the reel to apply the wrapping material to the pipe, and means for varying the relative speed of rotation between the rotatable member and reel.

42. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, means including a rotatable member for moving the reel along the pipe, means for rotating the reel to apply the wrapping material to the pipe, and means for.vary ing the speed of rotation of the rotatable member to vary the speed of movement of the reel along the pipe.

43. A pipe wrapping machine comprising a reel for holding the wrapping material in a .roll encircling the pipe, means including a rotatable member for moving the reel along the pipe, means for rotating the reel to apply the wrapping material to the pipe, means for varying the relative speed of rotation between the rotatable member and reel, and means for applying a fluid to bind the wrapping material to the pipe.

44. A pipe wrapping machine comprising a reel for holding the wrapping material in a roll encircling the pipe, positive means for rotating the reel to apply the wrapping material to the pipe, and means for moving the reel axially along the pipe.

45. In a pipe wrapping machine, a reel for holding the wrapping material in a roll encircling the pipe, and means for mounting the reel with its axis at selected angular relation with the axis of the pipe.

46. In a pipe wrapping machine, a reel for holding the wrap'ping material in a roll encircling the pipe, means for mounting the reel with its axis at selected angular relation with the axis of the pipe, and means for moving the reel along the pipe.

47. In a pipe wrapping machine, a reel for holding the wrapping material in a roll encircling the pipe, means for mounting the reel with its axis at selected angular relation with the axis of the pipe, and means for effecting relative movement between the reel and the pipe.

48. A pipe Wrapping machine including a frame, means to move said frame along the pipe as a support, a' roll of wrapping material, means to carry said roll spirally about said pipe, and. means to apply a coating to said wrapping material after the pipe has been wrapped.

49. A pipe wrapping machine comprising a carriage, wheels supporting the carriage on the pipe for movement longitudinally ofthe pipe, a drum mounted at the rear of the carriage to rotate about an 'axis approximately coincident with the axis of the pipe for spirally Winding a band of material on the pipe in the rear of the wheels, and means on the carriage for applying a liquid coating to both sides 0f the 4 `51. A pipe wrapping machine comprising a` rotor adapted to surround the pipe, means mounting the rotor for movement along the pipe as a track, a reel for holding wrapping material in a roll positioned bodily alongside the pipe and arranged with one end adjacent the rotor and the other end spaced therefrom, and a yoke frame projecting outwardly from the rotor and embracing the roll for supporting each end of said reel. f

52. A pipe wrapping machine comprising a reel for holding wrapping material in a roll positioned bodily alongside the pipe, a rotor adapted to surround the pipe and positioned entirely to one side of the reel, means projecting from the rotor for supporting both ends of the reel, and means mounting the rotor for movement along the pipe as a track.

53. A pipe wrapping machine for an installed pipe line, comprising a rotor completely encircling the pipe, means mounting the rotor for movement along the pipe as a track, said rotor having a section movable relative thereto whereby-the rotor may be assembled about the pipe line, a reel for holding av supply roll of sheet wrapping material bodily alongside the pipe, a. journal fo the reel having support on one of said rotor j,ections means for fastening the rotor sections together whereby the latter may bedisconnected and the rotor assembled about the pipe without demounting the supply roll, said journal .projecting outwardly from the rotor, and means LELAND s. RosENER.

Images