US1395742A - Machine for making pulp tubes - Google Patents

Description

v W. R. SEGLE.

MACHINE FOR MAKING PULP TUBES.

APPLICATION FILED JUNE 28, 1920.

l,395,?%2i. Patente i Nov. 1, 1921.

raw eya WILLIAM R. SEIGLE, OF NEW YORK, N.

MACHINE FOR MAKING PULP TUBES.

it wer till it a U Application filed June 28,

To all whom it may concern:

it known that I, WILLiAM R. Salem, a citizen of the United States of America, and resident of New York, in the county of New .1 York and State of New York, have invented rently herewith,

new and useful Improvementsin Machines for ltclaking Pulp Tubes, of which the following is a specification.

My invention relates to the manufacture of wound paper or pulp tubes and has for its particular objects the construction of dense, thick walled tubes of larger diameter than have heretofore been obtainable, and further, the construction of" tubes of the aforesaid character from asbestos fiber or P This invention consist of, or is embodied in, a machine by means of which I have been enabled to construct asbestos fiber tubes of high and uniform density, because of these characteristics adapted when out into suitable segments to serve as linings for brakebands, especially when prepared for service by impregnation with a cementitious, fiber reinforcing filler such as hardened oil. Such special products of the machine herein to be described form the subject matter of other applications for patent filed by me concurand serially numbered 392,373,. and 392,374. The operation of the herein described machine volves the per: formance of a new method bf forming tubes of felted fibrous material, which forms the subject matter of another application for patent, filed by me concurrently herewith, serially numbered 392,372. In my United States Letters patent numbered 1,037,670, dated September 3, 1912, there is described a machine adapted to the construction of pulp tubes of high density and inherent strength, and the subject matter of the present specification descriptively includes functionally related factors substantially the same as those which characterized the invention set forth in the said patent.

Since one ultimate object of this present invention is the production of a material eminently suitable to serve as brake-band linings, homogeneity of the fibrous felted structure of the pulp tube or cylinder is a prime requisite. The desired homogeneity negatively characterized by practically bsence of any stratifioations or teens in the wall of the pulp tube, and

' Specification of Letters Patent.

felt C and the N represents PatentedNov. 1, 1921. 192:0. Serial No. 392,371.

adapts the tubular structure to the reception and inclusion in its body, of impregnants which," by their binding and cementitious effect on the fibers which are comprised in the tube-structure, transform it into a friction sustaining material of uniform consistency throughout.

In the drawings hia annexed, which,

illustrate my invention,

Figure 1 is a diagrammatic elevationview of a pulp-tube machine; and

Fig. 2 is a broken longitudinal section of the suction roll on which the pulp tube is wound. v

The mechanical details of machines of the. general chalracter indicated are too [Well known to require full illustratidn or explanation.

In Fig.1, A indicates the cylinder mold, C the felt, which is preferably thin, as and for the reasons described in my aforesaid Patent No. 1,037,670; D a thickly felted couch roll, which may be mounted on a pivoted frame, as D; E' a segmental section roll, with the well-known suction commutator (not means of which suction is maintained be- I tween selected segment-partitions such as F, I

G represents and relaxed between others; the area over which suction is thus malntained; this area terminates near to, but

short of the line of tangency between the mandrel roll, presently to be described; H, J, K, L and M are guide rolls for the felt C; and I, I are whip-rolls.

the mandrel roll, on which the pulp tube is wound. This is a continuous suction roli""and is connected to the branch P of the 'siiction pipe 0; this branch I I may be corrugated as at O', or otherwise provided with means to permit the mandrel roll N to bear heavily on the felt G, and to indicated) by pulp-tank, B the rise as the tubematerial. accretes upon the mandrel roll. The branch Q from the suction pipe 0 communicates with the interior of the se mental suction roll E. A compacting roll mounted on a pivoted frame S, bears on' the top of themandrel roll. N, or upon the pulp tube in thecourse of its construction; An adjustable weight T may be provided, wherewith to adjust the pressure with which the roll Rbears upon roll N, and

consequentglycauses roll N to bear upon the felt C, supported by the segmental roll E.

tate with relation to the head plates while suction is maintained within it. The outer jacket N 1s provided with end sleeves, as N",

which make a substantially air-tight fit, as

at N, with the imperforate portions of the inner cylinder N. v

The outer jacket N provides the perforated or reticulated surface on which the pulp tube is wound. This jacket is removable from the inner cylinder N, so that when a pulp tube has been built up on the jacket, the jacket with the tube on it may be removed, and replaced by a similar jacket on which another tube is built.

The operation of the machine comprising the foregoing factors, isas follows:

By mean of the heavily felted couch roll D, afilm or web of interlaced or felted fibers is taken off the cylinder mold B onto the felt C and carried thereon to the segmental suction roll E. The suction maintained on this roll through the region indicated at G cxtracts a considerable portion of the water contained in the fibrous web, but is relaxed at a line, along the cylindrical surface of the roll which is far enough from the line of tangency of the mandrel roll N to permit the water remaining in the fibrous web to re gain its outer surface and moisten it, so that it unites intimately with layers previously wound upon the mandrel roll. This intimacy of incorporation of successive layers of fibrous web with eachother is further insured by the continuous suction main-.

tained in the mandrel roll, which draws the fresh, wet, and relatively mobile fibers into firm union with previously deposited fibrous layers, and at the same time by drawing water, carried to the outer layer by the fibrous Web coming, from the felt C, through the whole accumulated mass of fiber, felting the-fibers ofsuccessively applied layers together, so that upon completion, the pulp tube-on the mandrel roll is 1n every practical and substantial respect. a single homogeneous felted structure, free from thev web-carrier and segmental"suction roll.

heterogeneity or lack of unity which characterizes structures formed of discernible or separable laminae.

' 'The compacting roll R contributes to the density and homogeneity of the built-up pulp-tube by exerting pressure on the tube as it accumulates on the mandrel roll, both at the line of tangency of the roll R itself,

and that of the mandrel roll N upon the felt C. j

' When the pulp tube has acquired the desired thickness of wall, the machine is" stopped, the jacket N with the pulp tube" N, and a similar jacket put on the cylinder, which is then remounted in the head plates P. The formation of another pulp-tube is then begun.

After the pulp tubes have been cured by drying to any desired extent, they can be slit longitudinally and removed from the jacket N It is not intended that these pulp tubes shall be taken from the jackets while moist and plastic, and be flattened, as is the practice in making mill board and the like. The machine herein described is designed to produce pulp tubes of such thickness in re lat-ion to diameter that such flattening would be quite impracticable. As to the product itself, a principal object of this invention is to construct dense, thick walled pulp tubes which shall be allowed to dry and become set in cylindrical form, so that segments cut from such tubes shall be of suitable sha e and proportions to be attached to'bra e shoes and the like, and serve thereon as linings.

In general, pulp tubes comparable in respect to density and thickness of wall to those manufactured on machines of the character described in my said Patent No. 1,037,- 570, but of much larger diameter than has been. found practicable to attempt on such machines, can be produced by means of the invention herein described.

I claim:

1. In a machine for forming wound tubes of felted fibrous material, the combination of a web-carrier, a segmental suction roll on which the'web-carrier travels, and a suction mandrel roll bearing-on the web-carrier and segmental suction roll. i

2. In a machine for forming wound tubes of feltedfibrous material, the combination of a wcb-'carrier, a segmental suction rollon which the web-carrier travels, a suctlon mandrel roll bearlng on the web-carrier and se inentalsuction roll, and a compacting r01 i 4. In a machine for forming wound tubes of felted fibrous material, the combination of a web-carrier, a segmental suction roll on which the web-carrier travels, a continuous uction mandrel roll bearing on the web carrier and segmental suction roll, and a--compiloting roll bearing on the mandrel roll.

5. In a machine for forming wound tubes of feltedfibrous material, the combination of a web-carrier, a segmental suction roll on which the. web-carrier travels, and a suction lli) mandrel roll beaiilig on the web-carrier and segmental suction roll, said mandrel roll comprising a perforate removable jacket.

6. In a machine for forming woundtubes of felted fibrous material, the combination of a Web-carrier a segmental suction roll on which the web-carrier travels, a suction mandrel roll bearingon the veb carrier and segmental suction roll, said mandrel roll comprising a perforate removable jacket, and a compacting roll bearing on the mandrel roll. 7. In a machine for forming Wound tubes of felted fibrous material, the combination of a web-carrier, a segmental suction roll on which the Web carrier travels, and a suction mandrel roll bearing on the web-carrier and segmental suction roll, said mandrel roll comprising aperforate inner cylinder and a perforate removable outer jacket.

8. In a machine for forming Wound tube of felted fibrous material, the combination of a Web-carrier, a segmental suction roll on which the web carrier travels, a suction mandrel roll bearing on the Web-carrier, and segmental suction roll, said mandrel roll comprising a. perforate inner cylinder, a perforate removable outer jacket, and a compacting roll bearing on the mandrel roll.

Signed by me at New York, N. 1 this WILLIAM R. Salem;

25th day of June,

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