US1615381A

US1615381A - Method and apparatus for coating cores

Info

Publication number: US1615381A
Application number: US621241A
Authority: US
Inventors: Hosford William Fuller
Original assignee: Western Electric Co Inc
Current assignee: AT&T Corp
Priority date: 1923-02-26
Filing date: 1923-02-26
Publication date: 1927-01-25
Anticipated expiration: 1944-01-25

Description

Jan. 25, 1927.

W. F. HOSFOR'D MBTHODAND APPARATUS FOR COATING 'CORES Original Filed Feb. 26, 1923 2 Sheets-Sheet. 1

' 4 1 2211112 7212Yiosy car'al 19 j fizzy.

2 Sheets-Sheet 2 Jiwn flllmmi'fibgord N. F. HOSFORD Original Filed Feb. 26. 192:.

METHOD AND APPARATUS FOR COATING CORES Jan. 25 1927.

Nb Q

Patented Jan. 25, 1927.

UNITED STATES PATENT OFFICE.

. WILLIAM FULLER HOSFORD, OF MAPLEWOOD, NEW JERSEY, lASSIGN OR TO WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. 'Y., A CORPORATION OF NEW YORK.

METHOD AND APPARATUS FOR COATING CO RES.

Application filed February 26, 19:23, Serial No. 621,241 Renewed October 20, 1926.

pulpous material upon a foraminous member, transferring the material from said member to a carrier, preferably a felt, removing the pulpous material from the carrier and depositing it on the core, andthen forming the said material around the core so that it constitutes a homogeneous coating thereon.

The present method may be employed to advantage for insulating electrical conductors, but it is to be understood that it is not limited to this purpose but only in so far-as is defined bythe appended claims. WVhere the method is used for insulating electrical conductors manila, wood, rag, cotton, .esparto, jute, hemp, and asbestos pulps may be employed as the coating'material, but other materials than those specified may be used without departing from the spirit and scope of the present invention which contemplates in its broadest aspect the coating of any core with pulp.

The drawings illustrate an apparatus by which the method may be practiced, the apparatus being especially designed for coating a core in strand form, but it is to be understood that other apparatus may be devised for coating cores in other forms without departing from the spirit and scope of the invention.

The word pulp as used in the specification and claims is to be understood as defining and including any cohering fibro'us mass whether suspended in a liquid, moist, or substantially. dry.

In the accompanying drawings, I Fig. 1 is a side elevationof a preferred apparatus by which the method may be practiced;

Fig. 2 is an enlarged top plan viewof'the apparatus-shown in Fig. 1, parts being omitted for .the sake of clearness;

Fig. 3 is an enlarged fragmentary top part of the apparatus shown plan view of part of the apparatus shown in Fig. 3; I

Fig. 5 is an enlarged view showing the .form of the pulp coating after it has been deposited on the core by the carriers, and

Figs. 6, 7 and 8 are enlarged views showing the form of the pulp coating as it is delivered from the squeeze rolls, during the forming operation, and after the forming operation is completed respectively.

The steps of the method will bereadily understood from a detailed description of the apparatus by which the method may be practiced.

Referring to the drawings in detail in which like reference numerals designate .70 similar parts throughout the several views, 10 represents a framework which supports all of the elements of the apparatus. Mounted on the framework 10 are twotanks 11 and 12 each containing a mixture of pulp and liquid, the liquid being preferably water. The tank 12 is mounted at a lower level than the tank 11, the purpose of which will hereinafter appear. Rotatably mounted within the tanks 11 and 12 are drums 13 and 14: respectively. Each of these drums comprises imperforate side walls and a peripheral portion 15 provided with a plurality of .large perforations 16 (Fig. 4,) covered with a fine Wire mesh 17; The 35 drums are each provided with a centrally disposed axle 18 which is rotatably mounted in suitable bearings 19 carried by the framework 10.

The

drums

13 and 14 are rotated in the directions indicated by the arrows by means of belts or other suitable means connected with a source of power (not shown).- As

I these drums are rotated in their respective tanks, 'pulpous material is deposited on the wire mesh 17 carried thereby. The deposit is obtained by maintaining the pulp mixture within the drums at a lowerlevel than that of the level of the pulp mixture in the tanks,

as indicated by dotted lines A and B respec 1 tively. This difference in levels is main- .tained by

syphon pipes

20 and 21 which have their inlet openings submerged in the pulp mixture within the drums 11 and 12 and their discharge through the tubular axles 18. A continuous circulation of the pulp mixture is maintained in the tanks 1.1 and 12 by feeding the pulp mixture from suitable supply tanks (not shown) into the tanks 11 and 12 through

pipes

22 and 23 respectively, and out of the said tanks through pipes 24 and 25 respectively into suitable receiving tanks (not shown) from which the pulp mixture is pumped back into the supply tanks in any suitable manner.

Due to the difference in levels of the liquid within the drums and tanks, the liquid in the tanks will pass through the fine wire mesh 17 secured to each drum and perforations 16 made ,in the said drums into the interior of the drums, straining pulp onto the outer surface of the wire mesh 17 Associated with the drum 13 is an endless belt 26 made preferably of felt. The belt is rotatably supported on

rollers

27 and 28 rotatably mounted in suitable bearings carried by pairs of standards 29 and 30 respectively which are supported by the framework 10. The felt 26 is disposed directly above the drum 13 and is of a width slightly greater than the width of the fine wire mesh 17 carried by the drum, asshown in Fig. 4. The felt 26 is pressed against the fine wire mesh 17 carried by the drum 13 by means of a roll 31. This roll is forced toward the drum, squeezing the felt between it and the fine wire mesh 17, carried by the drum, by suitable pressure means 32 which is adjustable to present the proper pressure upon the felt. The roll 31 and its pressure means 32 are carried by a pair of standards 33 supported by the framework 10.

Associated with the drum 1 is a belt 34, preferably made of felt and similar to the belt 26. The belt 34 is rotatably supported upon the

rollers

35 and 36 rotatably mounted within pairs of standards 37 and 38 respectively supported by the framework 10.

The belt 34 is disposed directly above the fine wire mesh 17 carried by the drum 14 and is of a width slightly greater than the wire 'mesh as shown in Flg. 4. The belt 34' is pressed a ainst the fine wire mesh 17,-

carried by the rum 14, by means of a roller 39 which is forced toward the drum by suitable pressure means 40 which may be adjustable to present the requisite pressure to s ueeze the belt between the roller 39 and the e wire mesh 17 carried by the drum 14. The roller 39 and its pressure means 40 are carried by a pair of races 41 attached to the standards 37 and 38. r The two

belts

26, and 34 are rotated in the directions indicated by arrows by means of belts or any other-suitable means which are connected with a suitable source of power (not shown). As the belts are rotating they are pressed against the fine wire mesh 17. on the

drums

13 and 14, as previously depulpous material, deposited thereon by the scribed, and since the fine wire mesh carries rotation of the

drums

13 and 14 within their 7 respective tanks, this pulpous material will be transferred to the

belts

26 and 34 in a manner well understood by those skilled in the art. In addition to transferring the pulpous material to the belts, most of the terial on the

felts

26 and 34, which clings thereto in the form of a narrow ribbon, is carried by the felts toward the right as viewed in Fig. 1. I

The core to be coated is fed from a supply reel 42 between the

felts

26 and 34, the core lying between the pulpous ribbons carried by the

felts

26 and 34 respectively, as shown at G in Fig. 4. The roller 28 is forced against the roller-'36 by suitable pressure means 43 which serves to squeeze the

felts

26 and 34 against diametrically opposite sides of the core as the felts and core pass between the said rolls. These rolls serve to force the pulpous ribbons carried by the

felts

26 and 34 together so that they felt with each other to some extent, whereby the core upon its exit from between the

rolls

28 and 36 carries the pulpous ribbons in the form shown in Fig. 5. v

The core carrying the ribbons of pulpous material are then passed between the squeezing rolls 44 and 45 which are rotatably mounted between a pair of brackets 46 secured to a pair of upright standards 47 carried by the framework 10. The rolls 44 and 45 are rotated by means of a belt or other suitable means connected with a source of power (not shown) and serve preferably to draw the core' to be coated from the supply 42 between the

belts

26 and 34 and then between the rolls themselves. The rolls 44 and 45 may be made of any suitable material, the roll 45 being preferably made of rubber and the roll 44 in the form of a drum covered with a belt 48, as shown in Fig. 2. The rolls 44 and 45 remove the greater portion of the lipuid from the pulp ribbons and form them into a single thin ribbon which extends laterally from each side of the core, as shown in Fig. 6. This squeezing operation also tends to -mat' or 'feltthe fibers of the pulp into more'intimate relation, in-

after it is first acted upon by the former IOU ' and pulp ribbon were rolled on and after the forming action is completed being clearly shown in Figs, 7 and'S. The former causes athorough intermingling of the pulp fibers and shapes the coating so that it embraces the core and conforms to the shape thereof and molds the coating into a mass so homogeneous-that upon cutting the core and the coating, the latter will not fray or ravel and will not become easily detached from the core,"

The former 50 comprises essentially two plates which are rotated around the core and serve towrap the pulp ribbon around the core in much manner as though the core a table top with the palm of the hand. I The former 50 shown in the'drawin gs, is identical with that fullydescribed in the co-pending application of alker and March, Serial No.

547,923, filed March 29, 1922, and for a detailed description of this'mechanism reference is made to the application above referred to,

The core with its formed coatingis drawn from the former and subjected to a mechanism for thoroughly drying out the coating. The means shownfor performing this operation are apair of wide

hollow drums

52 and 53 heated internally and having a plurality of grooves 54 formed thereon, Fig. 2, which receive the core, guides (not shown) being provided for directing the core over first one drum and then the other until it has traversed all of the grooves on both drums, after whichit is stored-on a receiving drum 55. The

drums

52 and 53 are revolvably mounted in suitable bearings carried by vertical standards supported by the framework. The

drums

52 and 53 and the take-up reel 55 are rotated by belts'or.

other suitable means connected with a source of power (not shown).

Although it has been stated that the primary object ofthe invention is to applya coating of pulp to a core without the use of any adhesive substance, the machine herein disclosed may be used with a pulp mixture containing a s zing substance, or the pulp may be deposited on a core which has been previously treated with an adhesive agent, without departing from the spirit and scope of the present invention. Although the machine herein disclosed is designed for coating one core at a time, .it' is-to be understood that the mechanism may be modified tohandle a plurality of cores simultaneously.

What is claimed is:

1. The method of coating a core in strand form with pulp, which consists in depositing wet pulpous material on a foraminousmember, simultaneously removing sald ma-.

terial from said member and removing some Y ofthe moisture therefrom, depositing said material on the core, and forming said material around the core in such manner that the material is attached to the core solely by an inter-mingling of the fibres thereof.

2. The method of coating a core in strand form with pulp, which consists in depositing wet, pulpous material on a forammous member, simultaneously removing said ma terial from said member and removing some of the moisture therefrom, depositing said material on the core, formingsaid material around the core, and then removing substantially all of the moisture from said material.

3. The method of coating a core-in strand form with pulp, which consists in depositing wet pulpous material'on a foraminous member. simultaneously removing said material from said member and removing some of the moisture therefrom, depositing said material on the core, forming said material around the core in such manner that said material is attached'to the core solely by an [form with pulp, which consists in depositing a ribbon of moist pulpous material on a member, removing said ribbon from said member, causing contact between said IlbbOII and the core, and then wrapping said ribbon around the core in such manner that it is attached tothe core solely by an intermingling of the fibers thereof.

6. The method of coating a core in strand form with pulp, whichrconsists .in depositing a ribbon of wet, pulpous material on a :toraminous member, removing said ribbon from said member, removing a portion of the moisture from said ribbon, causing contar-t between the ribbon and the core, and then wrapping said ribbon around the core. 7'. The method of coating a core in strand form with pulp, whichconsists in depositing a ribbon of wet pulpous. material on a 'foraminous member, removing said ribbon from saichmember, removing a portion of thereof. I

8.Y The method of coating a core in strand form with pulp, which consists in depositing a ribbon of wet, pulpous material on a foraminous member, removing said ribbon from said member, removinga portion of the moisture from said ribbon and depositill) ing the ribbon on the core longitudinally of the core, and then Wrapping said ribbon around the core.

9. The method of coating a core in strand form with pulp, which consists in depositing a ribbon of wet pulpous material on a foraminous member, IQII'IOViDg said ribbon from said member, removing a portion of" .pingsaid ribbon around the core, and then removing substantially all of the moisture from said wrapping.

11. The method of coating a core in strand form with pulp, which consists in depositing a ribbon of wet pulpou material on a foraminous member, removing said ribbon from said member, removing a portion of the mositure from said ribbon, causing contact between the ribbon and the core, wrapping said ribbon around the core in such manner that it isattached to the core solely by an intermingling of the fibres thereof, and then removing substantially all of the mositure from said wrapping.

12. The method of coating a core in strand form with pulp, which consists in depositing pulpous material on-a member, transferring said material from said member to a carrier, then removing said material from the carrier and depositing it on the core, and then wrapping the material around the core.

'13. The method of coatinga core in strand i form with pulp, which consists in depositing pulpous material on a member, transferring said material from said member to a carrier, then removing said material from the carrier and depositing it on the core, and then wrapping the material around the core in such manner that it is attached to the core solely by an intermingling of the fibres thereof.

14. The method of coating a core in strand form with pulp, which consists in depositing pulpous material on a member, transferring said material from said member to-a felt, then removing said material fronithe felt and depositing it on the core, and then wrapping the material around the core.

15. The method of coating a core in strand form with pulp, which consists in depositing pulpous material on a member, transferring sa1d material from sa1d member to a felt, and remov ng sa1d material from the felt and depositing it on the core, and then forming said material around the core.

16. The method of coating a core in strand form with pulp, which consists in depositing a ribbon of wet pulpous material on a mem ber, transferring said ribbon from said memher to a felt, removing said ribbon from the felt and depositing it on the core, and then forming said ribbon around the core.

17 The method of coating a core in strand form with pulp, which consists in depositing a ribbon of wet pulpous material on a foraminous member, transferring said ribbon from said member to a felt, removing said ribbon from the felt and depositing it on the core, and then forming said ribbon around the core in such manner that it is attached to the core solely by an intermingling of the fibres thereof.

18. The method of coating a core in strand form with pulp, which consists in depositing wet, pulpous material on a foraminous member, transferring said material from said member to a felt. removing some of the moisture from said material. removing said material from the felt and depositing it on the core, forming said material around the core, and then removing substantially all of the moisture from said material.

19. The method of coating a core, in strand form with pulp, which consists in depositing a ribbon of wet, pulpous material on a foraminous member, simultaneously transferring said ribbon from said member to a felt and partially removing the moisture from said ribbon, removing said ribbon from the felt and depositing it on the core, and then forming said ribbon around the core.

20. The method of coating a core in strand form with pulp, which consists in depositing a ribbon of wet. pulpous material on a foraminous member, simultaneously transferring said ribbon from said member to a felt and partially removing the moisturev from said ribbon, removing said ribbon from the felt and depoisting it on the core, forming said ribbon around the core, and then removing substantially. all of the moisture from said wrapping. I

21. The method of coatinga core in strand form with pulp, which consists in depositing a ribbon of pulpous material on a metre ber, transferring said ribbon from said member to a moving felt, and then removing said ribbon from the felt and depositing it on the core, and then wrapping said ribbon around the core in such manner that ,it is attached to the coresolely by an intermingling of the fibres thereof; r

22. The method of coating a movingcore in strand form with pulp, which consists in depositing a ribbon of wet, pulpous material on a foraminous member, simultaneously transferring said ribbon from said member to a moving felt and removing some of the moisture from said ribbon, removing said ribbon from the felt and depositing it on the moving core, and then wrapping said ribbon around the core.

' 23. The method of coating a moving core in strand form with pulp, which consists in depositing a ribbon of wet pulpous material on a foraminous member, simultaneously transferring said ribbon from said member to a moving felt and removing some of the moisture from said ribbon, removing said ribbon from the felt and depositing it on the moving core, and then wrapping said ribbon around the core in such manner that. it

is attached to the .core solely by an inter-' minglin of the fibres thereof.

24. The method of coating a moving core in. strand form with pulp, which consists in depositing a ribbon of wet, pulpous material on a foraminous member, simultaneously transferring said ribbon from said member to a moving felt and removing some of the moisture from said ribbon,

then removing said ribbon from the felt-and depositing it on the moving core, then wrapping said ribbon around the core toconstitute a homogeneous coating therefor, and

then removing substantially all of the moisture fromsaid coating.

25. The method of coating a moving core in strand form with pulp, which consistsin depositing wet, pulpous material on a foraminous member, simultaneously removing said material from said'member removing some of the moisture therefrom, depositing said material on the moving core, \removing additional moisture from said material,

-forming said material around the moving core to constitute a homogeneous coating therefor, and then removing substantially.

all of the moisture from said coating.

26. In a machine for coating a core in strand form with pulp containing pulp, a f means for causing relative movement between said member and said liquid whereby or removing said pulp from the foraminous member and. depositing it on the core, and a former for shaping the pulp so that it conforms with the shape of the core.

27. The method of coating a core in strand form with pulp, which consists in forming two stri s of wet pulpous material, depositi1? 'sai strips upon the core at opposite si esthereof, and then forming said strips so that they constitute a ho'mogeneous covering for the core. i

28. The method of coating a core in strand form with pulp, which consists in forming around the core in such manner that they a supply of liquid. oraminous member,

ulp'is strained onto said member, meansa plurality of strips of wet, pulpous material, depositing said strips upon the core, and then forming said strips so that they constitute a homogeneous covering for the core.

30. The method of coatinga core in'strand form with pulp, which consists in formin a plurality of strips of wet pulpous matria? depositing said strips upon the core, an then forming said strips around the core in such manner that they are attached to the core-solely by an intermingling of the fibres thereof.

31. The method of coating 9. core in strand form with pulp, which consists in forming a plurality of strips of wet, pulpous material, depositing said strips upon the core, then forming said strips so that they constitute a homogeneous covering for the core, and then removing substantially all of the moisture from said coating.

32. The method of coating acore in strand plurality of strips of 'Wet, pulpous material, depositing said strips upon the core, removing some of the moisture from said strips and then forming said strips so that they constitute a homogeneous covering for the core.

33. The method of coating acore in strand form with pulp, which consists in forming a plurality of wet strips of pulpous material, depositing said strips upon the core and then wrapping said strips around the core so that they constitute a homogeneous covering the core.

34. The method of coatin a core in strand form with pulp, whic consists in forming two strips of wet, pulpous material, depositing said stri s upon the coreand at opposite sides thereof and then wrapping said strips around the coreso that they constitute a homo eneous coating for the core.

35. The method of coating :1 core in strand form with pulp, which consists in forming two strips of wet, pulpous material, depositin" said strips upon the core and at opposite si es thereof, wrapping said strips around the core so as to constitute a homogeneous covering therefor,'itnd then removing sub"- stantially all o'f th 'sture from said covering.

36. The methodof coating a core in strand form with pulp,,which consists in forming two strips of wet, pulpous material, depositin" said strips upon the core and at opposite sides thereof, removin some of the moisture from said strips, am? then wrapping said strips around the core so that they constitute a homogeneous coating for the core.

37. The method of coating a core in strand form with pulp, which consists in forming a I form with pulp, which consists in forming two strips of wet, pulpous material, depositing said strips upon the core and at opposite sides thereof, removing some of the moisture from said strips, and then wrapping said strips around the core so that they constitute a homogeneous coating for the. core, and then removing substantially all of the moisture from said coating.

38. In a machine for coating a core instrand form with pulp, a plurality of foraminous members, means for depositing pulpous material upon said members, a carrier associated with each foraminous member and in contact therewith, means for causing relative movement between the carriers and said foraminous members whereby the pulp thereon is transferred to the carriers, means for bringing the core to be coated into contact with the pulp onboth of said carriers, and means for causing relative movement between the said carriers and the core whereby the pulp on the carriers is deposited upon the core.

39. In a machine for coating a core in strand form with pulp, a plurality'of foraminous members, means for depositing pulpousmaterial upon said members, a carrier associated witheach foraminous member and foraminous members whereby the pulp thereon is transferred to the carriers, said carriers arranged adjacent each other, means for inserting the core to be coated between said carriers and in contact withthe .pulp on the carriers, and means for causing relative movement between said carriers and the core whereby the pulp on the carriers is deposited on the core.

40. In a machine for coating a core in strand form with pulp, a plurality of forminous members, means for depositmgpulpous material upon said members, a carrier associated with each foraminous member and in contact therewith, means for causing relative movement between the carriers-and said foraminous members whereby the pulp thereon is transferred to the carriers, said carriers arranged adjacent each other, means for inserting the core to be coated between said carriers, means for pressing said carriers toward the core and against each other, and means for causing relative movement between said carriers and the core whereby the pulp 'on the carriers is deposited on the core.

41.In a machine for coating a core in strand form with pulp, a plurality of foraminous members, means for depositing pulpous material upon said: members, a carrier associated with each foraminous member and in contact therewith, means for causing relative movement between the carriers and said foraminous members whereby the pulp thereon is transferred to the carriers, said carriers arranged adjacent each other, means for inserting the core to be coated between said carriers, means for pressing said carriers toward the core and against each other, and means for causing relative movement between sai carrier and the core whereby the pulp on he carriers is deposited on the core,-and means for forming said pulp so that it constitutes a homogeneous coatlng for the core.

42. In a machine for coating a core in strand form with pulp, a plurality of foraminous members, means for depositing pulpous material upon said members, a carrier associated with each foraminous member and in contact therewith, means for causing relative movement between the carrier and said foraminous members whereby the pulp thereon is tI'aHSfGIJ'Bd. to the carriers, said carriers arranged adjacent each other, means for inserting the core to be coated between said carriers, means for pressing said carriers toward the core and against each other, said carriers engaging the core at opposite sides thereof, and means for causing relative movement between the carriers and the core whereby the pulp on the carriers is deposited on the core.

43. In a machine for coating a core in strand form with pulp, a plurality of foraminous members, means for depositing wet, pulpous material upon said members, a carrier associated with each foraminous mem-- her and pressed into contact therewith means for causing relative movement be-' tween the carriers and said foraminous members whereby the pulp thereon is transferred to the carriers and. some of the moisture is removed from said material, means for'bringing the core to be coated into contact with the pulp on both of said carriers and means for causing relative movement between said carriers and the core whereby the pulp on the carriers is'deposited upon the core.

44. In a machine for coating a 'core in strand form with pulp, a plurality of foraminousmembers, means for depositing wet, pulpous material upon said members, a carrier associated with each foraminous member and pressed into contact therewith, means for causing relative movement between the carriers and said foraminous members whereby the pulp thereon-is transferred to the carriers and some of the moisture is removed from said material, means for bringing the core to be coated into contact with the pulp on both of said carriers, and means for causing relative movement between said carriers and the core whereby the pulp on the carriers is deposited upon the core, and means for forming said material on the core so that its constitutes a homogeneous coating therefor.

carrier associated with each foraminous member and pressed in contact therewith, means for causing'relative movement between the carriers and said foraminousmembers whereby the pulp thereon is transferred to the carriers and some of the moisture is removed from said material, means for bringing the core to be coated into contact with the pulp on both of said carriers, and means for causing relative movement between said carriers and the core whereby the pulp on the carriers is deposited upon the core, and means for forming said material on thecore so that it constitutes a homogeneous coating therefor and means for removing substantially all of the moisture from said coating.

46. In a machine for-coating a core in strand form with pulp, a plurality of foraminous members, means for depositing pulp-' ous material on said members, a plurality of felts associated with said members and in contact therewith, means for causingrelative movement between said felts and said foraminous members whereby the pulp on said members is transferred to said felts, means for bringing the core to be coated into contact with the pulp on said felts, and means for causing relative movement between said felts and the core whereby the pulp material on the felts is deposited on the core.v

47. In a machine for coating a core in strand form with pulp, a plurality of foraminous members, means for depositing pulpo'us material on said members, a plurality of felts associated with said members and in contact therewith, means for causing relative movement between said felts and said foraminous members whereby the pulp 011 said members is transferred to said felts, said felts disposed in contact with each other, means for inserting the core to be coated between the contacting portions of said felts, and means for causing relative movement between said felts and the core whereby the pulp material on the felts is deposited on the core.

48. In a machine for coating a core in strand form with pulp, a pair of rotatable foraminous members, means for depositing .wet, 'pulpous material on said members, a

rotatable felt associated with each of said members and pressed into contact therewith, means for rotating said foraminous memwhereby the pulpous material on the members is transferred to the felts, said felts disposed in contact with 1 each other, and means for drawing the core to be coated between the contacting portions of said felts whereby the pulpous material thereon is deposited on the core.

49. In a machine for coating a core in strand form with pulp, a pair of rotatable foraminous member's, means for depositing contact with each other, and means for drawing the core to be coated. between the contacting portions of said felts, whereby the pulpous material thereon is deposited on the core, and meansfor forming the material on the core so that it constitutes a homogeneous. coating for the core, and means for removing substantially all of the moisture from sald coating.

50. In a machine for coating a core in strand form with pulp, a pair of foraminous members, means for depositing a ribbon of pulpous material on each of said foraminous -members, a carrier associated with each of said. members and pressed into contact therewith, means for causing relative movement between the carriers and said foraminous members, whereby thepulpous ribbons on said members are transferred to said carrfers, said carriers tact with each other, so that the ribbons carried thereby are laid one upon the other, means for inserting the core to be coated between the said contacting ribbons on the carriers, and means for causing relative movement. between the core and said carriers whereby the ribbons on the carriers are deposited on the core.

51. In a machine for coatinga core with for depositing a ribbon of pulpous material disposed in con on each of said foraminous members, a carrier associated with each of said members and pressed into contact therewith, means for causing relative movement between the carriers and said foraminous members, whereby the pulpous ribbons on saidmembers are transferred to said carriers, said carriers disposed in contact with each other so that the ribbons carried thereby are laid one upon the other, means for inserting the core to be coated between the said contating 'ribbonson the carriers, and means for causing relative movement between the core and said carriers whereby the ribbons on the carriers are deposited on the core, and means for wrapping said ribbons around the core so as to constitute a homogeneous coating therefor.

52. Ina machine for coating a 'core with pulp, a pair of foraminous members, means for depositing a ribbon of wet, pulpous material on each of said foraminous members, a carrier associated with each of said members and pressed into contact therewith, means for causing relative movement be- .tween the carriers and said foraminous members, whereby the pulpous ribbons on said members are transferred to said carriers, and'some of the moisture is removed from said ribbons, said carriers disposed in contact with each other, so that the"ribbons carried thereby are laid one upon the other, means for inserting the core to be coated between the said contacting ribbons on the carriers, and means for causing relative movement between the core and said carriers whereby the ribbons on the carriers are deposited on the core, means for wrapping said ribbons around the core so as to constitute a homogeneous coating therefor, and means for removing substantially all of the moisture from said coating.

53. The method of coating a core in strand form, which consists in depositing unfinished paper on a foraminous member, removing said unfinished paper from said member, depositing said unfinished paper on the core, and then completing the fabri- I cation of the paper by a wrapping operation.

54. The method of coating a core in strand form, which consists in depositing unfinished paper on a foraminous member,- removing said unfinished paper from said member, and then wrapping said unfinished paper around the core in such manner that it is attached to the core solely by an inter- 1 L,

mingling of the fibres thereof.

strand form, which consists in depositing unfinished paper on a foraminous member, removing said unfinished paper from said member, depositing said unfinished paper on the core, then completing the fabrication of said unfinished paper and forming it around the core in such manner that it is attached to the core solely by an intermingling ot' the fibres thereof, and subsequently drying the paper.

56. The method of coating a core in strand form, which consists in forming a plurality of strips of unfinished paper, depositing said strips upon the core, and then wrapping said strips around the core. 57. The method of coating a core in strand form, which consists in forming two strips of unfinished paper, depositing said strips upon the core at opposite sides thereof, and then forming said strips around the core in such manner that they are attached to the core solely by an intermingling of the fibres thereof.

58. The method of coating a, core in strand form, which consists in forming a plurality of strips of unfinished paper, and

then wrapping said strips upon the core in such manner that they constitute a homogcneolls covering for the core.

In witness whereof, I hereunto subscribe my name this 15th day of February, A. D.,

WILLIAM FULLER HOSFORD.