US1567948A - Paper-making and other machine wherein suction is to be used - Google Patents

Description

Dec. 29 1925- 1,557,948

R. B. HEYS PAPER MAKING AND OTHER MACHINE WHEREIN SUCTION IS TO BE USED Filed Feb. 28, 1925 3 Sheets-Sheet 1 P04 4ND 54 rm Hzrs 6y /7/'s flrromeys Dec. 29, 1925. 1,567,948

RAB. HEYs PAPER MAKING AND OTHER MACHINE WHEREIN SUCTION IS TO BE USED Filed Feb. 28, 1925 3 Sheets-Sheet 2 Foul/v0 x91 YTHHEYS 6 bis Arromeys WWW Dec. 29,1925. 1,567,948

R. B. HEYS PAPER MAKING AND OTHER MACHINE WHEREIN SUCTION IS "1'0 BE USED Filed Feb. 28, 1925 3 Sheets-Sheet 5 .9,. vu- KI,

F01 AND 191 WW HE V5 6 his HffO/hefs Patented Dec. 29, 1925.

UNITED STATES 1,567,948 PATENT OFFICE.

ROLAND BLYTH KEYS, OF BRISTOL, ENGLAND, ASSIGNOR TO ST. ANNES BOARD MILL COMPANY LIMITED, OF BRISTOL, ENGLAND.

PAPER-MAKING AND OTHER MACHINE "WHEREIN SUCTION IS TO BE USED.

. Application filed February 28, 1925. Serial No. 12,330.

To all whom it may concern-.-

Be it known that I, ROLAND BLYTH HEYS, a subject of the King of Great Britain, residing at 5, First Avenue, St. Annes Park, in the city of Bristol, England, have invented new and useful Improvements in Paer-Making and Other Machines Wherein uction is to be Used, of which the following is a specification. This invention is principally intended for use in place of suction boxes, or to supplement suction boxes in paper making ma chines, for withdrawing moisture from the pulp as it passes along upon the wire on its way to the dry end of the machine and I will, for the purposes of description, presume that it is so applied from which its analogous applications to cases in which suction is required otherwise to act upon webs, sheets, or layers of paper, or other material, will also be understood. It will of course be realized that where the word moisture is employed in the claims that moisture, air other fluid is included, or moisture and air or other fluid, or any combination'thereof.

According to this invention a band, or belt, of rubber or other suitable material, is arranged beneath the wire and is carried by rollers in such manner that it will travel with the wire upon which the web of wet pulp is carriedtowards the dry end of the machine by the movement of the wire, or by the rollers, or one of the rollers,- being driven, or by a combination of these means. The said band, or belt, is grooved, or channelled, transversely to its line of travel and, as the said band, or belt, travels the open ends of those of the grooves, or channels, which successively comes beneath the wire carrying the wet pulp, will come opposite the mouths of. passages leading to suetion devices so that at that portion of the travel air and moisture is drawn through the pulp and wire into the grooves, or channels, as they successively come into communication with the suction devices the moisture being drawn in by the suction, any moisture which may not be so delivered being retained in the grooves, or channels, until it "is discharged therefrom when the ends of the said grooves, or channels, leave the posit-ion opposite the suction devices.

I will more particularly describe my invention with reference to the accompanying drawings in which Figure I shows in side elevation, Figure 2 in transverse section and Figure 3 in lan, a construction of apparatus in accor ance with my invention as applied to withdrawing moisture from wet paper-pulp passing upon the Wire towards the dry end of the machine, but I do not limit myself to the details of this construction, nor do I limit myself to the particular purpose for which I presume it is to be used as analogous arrangements can be employed for various other purposes whereinit is desired to act upon travelling materials by means of suction. Figure 4 shews in side elevation and Figure 5 in transverse section a modified construction of apparatus to \that shown in Figures 1, 2 and 3.

Beneath the portion of the travelling wire A whereat suction is to take place is the upper run of a band of rubber B, or equivalent flexible material, with channels 12 therein extending from side to side of the band and preferably of triangular shape in' cross-section the portions of the band which separate the channels being also of triangular shape in cross-section so that the apices of cross-sectional triangles formed by the said portions of the band present a maximum surface of suction to the wire A whilst the bases of the said triangles afford the maximum of strength of material between the channels. The band B is carried by rollers C whose axes c are mounted 'in bearings I) carried by standards E at each side of the said band. of the band B are the mouths of passages f leading to the suction device, or devices, F the sides of the said band bearing against the lips, or flanges, of these mouths, which lips, or flanges, are such that there will, as the band travels along, only be communication between the suction devices F and those channels I; and superposed portions of the wire A which successively come into coincidence with the said mouths'of the passages f leading to the said suction device, or devices. In the modified ap aratus shewn in channels I) of the upper run of the band B not covered'by the wireA and paper is effected by an endless strip of rubber G carried at each side of the said band, on the On each side of the upper run Figures 4 and 5 closure 0 the parts' of the the broad outward edges of the said strips G bear against the up er flange of the mouth of the passages f, t e closure at the side flange and the lower flange of the said mouth being effected by the edges of the channelled band B bearing against them the said side flanges being sufficiently wide to ensure that the suction device F will, at no time, be in communication with a channel b which is not closed to the outer air, so that the suction draws only through channels which are covered by a part of the wire A carrying the paper.

If desired, an analogous construction of channelled device such as B and adjuncts can be applied to a roller of suflicient diameter especially where only a small area of suction is required.

What I claim is 1. In apparatus for withdrawing, by suction, moisture from wet material carried on a travelling wire; a belt, and means for supporting it so that it travels with and beneath said wire, the said belt having grooves, transverse to the line of travel, the open ends of which come successively opposite to the mouth of a passage leading to a suction device, so that, at that portion of the travel, air and moisture is drawn through said material and wire into said grooves, as they successively come into communication with the passage, leading to said suction device,

substantially as hereinbefore described,

2. In apparatus for withdrawing, by suction, moisture from wet material in accordance with claim 1, a travelling belt, of flexible material having grooves therein of tri angular shape in cross-section, the portions of the belt, which separate said grooves, being also of triangular shape in cross-section so that the apices of cross-sectional triangles formed by said portions of the band present a maximum surface of suction to the wire whilst the bases of said triangles afl'ord the maximum of strength of material between the grooves, substantially as hereinbefore described.

3. In apparatus having a grooved traveling belt, in accordance with claim 1; a strip of rubber carried at each side of said grooved belt, on the upper sides of which strip the edge portions of the wire carrying the wet material bear, the outward edges of said strip bearing against the upper flange of the mouth of the passage leading to the suction device, substantially as and for the purpose hereinbefore described.

4. Apparatus for withdrawing by suction moisture from wet material carried on a travelin wire, said apparatus comprising a rotata le roller carrying upon its periphery a band having grooves transversely to the line of travel, the open ends of which come successively opposite to the mouth of a passage, leading to a suction device, so that, at that portion of the travel, air and moisture is drawn through said material and wire into said grooves, or channels, as they successively come into communication with the passage, leading to said suction device, substantially as hereinbefore ,described.

In testimony whereof, I have signed my name to this specification.

ROLAND BLYTH HEYS.

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