US1623157A

US1623157A - Paper-making machine

Info

Publication number: US1623157A
Application number: US705429A
Authority: US
Inventors: Berry Earl Elwin
Original assignee: Beloit Iron Works Inc
Current assignee: Beloit Iron Works Inc
Priority date: 1924-04-10
Filing date: 1924-04-10
Publication date: 1927-04-05
Anticipated expiration: 1944-04-05

Description

1 623,157 April 5, 1927. E- E- BERRY PAPER MAKING MACHINE Filed April' 10, 1924 I 2 Sheets-Sheet 1 1,623,157 Aprll 54, 1927. E. BERRY v v PAPER MAKI NG MACHI NE Filed April 10, 1924 2 Sheets-Sheet 2 V M W" EVE1IUE\ *ZZIZZMZZEEF/y v Ev v5 Patented Aipr- 1927' i e UNI'TED- S ME' EARL ELWIN 1,623,157 PATENT OFFICE.

BERRY, OF BELOIT, WISCONSIN, ASSIGNOR TO BELOIT IRON WORKS, OF

BELOIT, WISCONSIN, A CORPORATION OF WISCONSIN.

PAPER-MAKING MACHINE.

Application filed April 10, 1924. Serial No. 705,429.

This invention relates to apaper making machine and more particularly to the breast roll end of a Fourdrinicr having a traveling apron associated with the breast roll and 5 with the wire and adapted to be shaken therewith by any suitable means, so that the pulp which flows on to the traveling wire at the same speed of the wire or nearly so, will not be permitted to filter until the fibres 1c are thoroughly crossed or interlaced and have passed the traveling apron.

' It is an object of this invention to provide the breast roll end of a Fourdrinier machine with a traveling. apron adapted to prevent 1 5 pulp filtration from taking place until after the pulp has beenthoroughly shaken to .cause interlacing of the fibres.

It is also an object of' the invention to provide a paper making machine wherein the pulp is passed on to the wire above an endless apron which is eng'a ed around'the breast roll within the bight 0' the wire.

It is a further object of the invention to provide a paper making machine having a Y movable apron beneath the wire so that it will be possible to produce a sheet of paper with a much finer formation and with the v fibres thoroughly interlaced to provide a sheet'of paper of substantially equal strength in all directions. a

It is furthermore an object of the invention to provide a paper makingmachine wherein a film of pulp on the wire is thoroughly shaken before any filtration or formation takes place and without requiring the use of a. slice before the pulp enters on the formation area of the wire. Y

It is an important object of this invention to provide a paper making machine of improved construction having a set of table rolls independent of the regular table rolls adapted to support a traveling apron between the laps of the wire with the traveling a ron also passin around the breast roll within the bight of said wire.

' Other and further important objects of this invention will be apparent from the dispanying drawings.

This invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a fragmentary side elevation closures inthe specification and the acc0m-- of the breast roll end of a Fourdrinier paper making machine embodying the principles of this invention. Figure 2 is an enlarged fragmentary transverse section taken on line 2-2 of Figure 1. Figure 3 is an enlarged fragmentary detail section taken on line 33 of Figure 2. As shown on the drawings The reference numeral 1 indicates a. paper making machine head box or-flow' box provided with a stationary apron 2 and with a slice 3 which is adapted for varying the thickness of the sheet to be formed. The flow box- 1 is supported upon base rails 4. Secured to the base rails and to the sides of the flow box 1 respectively are flexible supporting springs 5 and 6 which support bearings 7 for a breast roll 8. I

Mounted on the base rails 4 are a plurality of upright supports or pedestals 9 and 10. Mounted on the top of the uprights 9 are extension arms 11. Deckle bars 12 are supported upon the tops of the arms 11 on each side of the machine and support the deckle rails 13. Deckle straps 14 are trained around deckle pulleys 15. Also mounted upon each of-the uprights 9 to the inside of the arms 11 are pairs of upright-wooden springs 16. Similar pairs of wooden springs 16 are also mounted upon the tops of the uprights 10.v Bolted to the tops-0f the springs 16 are'table roll rails 17. A plurality of table roll bearings 18 are mounted upon the table rails 17 and are equipped "with-adjusting mechanisms 18. Rotatablv supported in bearings on the table roll rails 17 is an apron roll 19'around which an endless traveling apronq20. is trained. The traveling apron 20 is also trained around the breast roll 8 and runs over an apron guide roll 21 supported between a pair of'the uprights 9. v

Rotatably-supported the bearings 18 between the breast roll-8 and the apron roll 19 are a plurality of apron table rolls 22 over which the upper lap of the traveling 100 apron runs. Table ,roll's 23 similar in construction to the rolls 22 are "supported in the bearings 18 which are located beyond the apron roll 19; Engaged around the breast roll to the outside of the travel apron.

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apron roll 19 so that a spray of water may be directed on the traveling apron 20 for the purpose of washing it before it returns to the breast roll. A doctor 27 is supported on the base rails and has mounted thereon a flexible strip of material 28, such as rubher. The strip of material 28 acts as a scraper against the lower lap of the traveling apron to remove any fibres that may be clinging to the traveling apron and have a tendency to make an uneven surface.

The operation is as follows The paper making machine of this invention covers a Fourdrinier section of substantially typical construction having improved features, the most important being the traveling apron arrangement which is provlded so that a strong sheet of paper may be made which is strong in both directions.-

The travel ing apron 20 runs .over the breast roll, the rolls 22 and the apron roll 19 within the bight at one end of the wire 2a, and said traveling apron acts to prevent any filtration or formation of the sheet taking place during the period that the pulp isbe- 1ngshaken on the wire between the breast roll 8 and the apron roll 19. The fibres in the pulp are thus thoroughly crossed or closely interlaced before the pulp is carried over the traveling apron 20 by the wire over onto the table rolls where filtration begins to take place. With the fibres thoroughly interlaced and the pulp traveling along at the same speed as the Wire the fibres will settle down in their relative positions as filtration starts.

By using the improved traveling apron in the Fourdrin'ier the pulp is well shaken and the fibres thoroughy interlaced before any formation is permitted to take place due to filtration through the wire. The use of an additional slice is, also obviated and there is therefore'no tendency to disarrange the fibres after they have been properly interlaced as described. A sheet of paper of much finer formation is thus formed, said paper having a more equal strength in each direction. I

The shaken pulp is carried by the wire over the apron roll 19 and over the table rolls 23. As the traveling apron 20 passes around the roll 19 water is sprayed from the spray pipe 26 into the traveling apron to wash the same before it returns to the breast roll; The flexible strip 28 on the doctor 27 serves to scrape the washed traveling apron so'that all fibres are removed. y

I am aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the' principles of this invention, and I therefore do not purpose limit ing the patent granted hereon, otherwise than necessitated. bythe prior art.

I claim as my invention 5- for making acontinuous web of paper and having a shaking mechanism, the combina- 'tion with the breast roll and a plurality of table rolls, of an impermeable endless apron mounted for movement thereover, said apron extending a substantial distance beyond the EARL ELWIN BERRY.

In a Fourdrinier paper machine adapted 4