US3097993A - Apparatus for automatic knock-off shower for paper machine - Google Patents

Apparatus for automatic knock-off shower for paper machine Download PDF

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US3097993A
US3097993A US112044A US11204461A US3097993A US 3097993 A US3097993 A US 3097993A US 112044 A US112044 A US 112044A US 11204461 A US11204461 A US 11204461A US 3097993 A US3097993 A US 3097993A
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shower
paper web
wire
breakage
paper
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US112044A
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Denis A Goddard
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Dominion Engineering Works Ltd
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Dominion Engineering Works Ltd
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/04—Paper-break control devices

Definitions

  • This invention relates to paper vmachinery and :has particular reference .to .new and im-proved ⁇ apparatus for removing the paper web Afrom a Fourdrinierwirein the event
  • An object of the invention is to provide new and improved apparatus of the type set tort-h which is quick, reli- ,a-ble and sate.
  • Another object of the invention vis to provide Anew and improved .device of the typeset forth which senses a break ⁇ in ⁇ the paper web right at the couch and ⁇ as .close as possible to the actual break and which senses a break in the ⁇ paper web the instant it occurs.
  • Another Yobject of the invention is to provide a new and improved lapparat-us of the type set forth ⁇ which uses a minimum amount of high pressure wat-er and is operated only when necessary.
  • FIGURE 1 is a schematic view of the couch end of a paper machine Fourdrinier and ⁇ embodying the ⁇ present invention
  • lFIGURE 2 is a plan view of the detector head assembly
  • ⁇ FIGURE 3 is a sectional view taken on line 3 3 of FIGURE 2 looking in the direction of the arrows; ⁇ and -FIGURE 4 is .a schematic diagram of the invention showing the relative positions Iof the various components.
  • the purpose of -the present invention is to remove the paper web from the Fourdrinier wire and pass into a pit vbelow the conch, designed to receive it.
  • One known method of achieving lthe above object is to provide a knock-off shower Ipositioned near the lcouch and running continuously, -to prevent the paper web clinging to the Fourdrinier wire.
  • a .disadvantage of the photoelectric cell arrangement is that the sensing device'is usually positioned after Ione of the presses, giving a signal which is too late to ⁇ be effective. Also, the photoelectric cells eventually become covered with a thin film of paper stock and cease to sense a break in the paper.
  • the present invention provides an arrangement which senses a break in the paper web right at .the couch and as close as possible to the actual break.
  • FIGURE l shows the couch end of a paper machine Fourdrinier containing a conventional suction couch assembly 10 and embodying the present invention shown generally at 11.
  • the suction couch ,assembly 10 ⁇ contains a convention-al vacuum chamber 12 to which is attached the present Ainvention 11, positioned on the dry side.
  • the invention shown at 11 comprises a detector head assembly which is in reality a vacuum chamber having a direct connection 13 to the main suction couch vacuum chamber 12. Also shown in FIGURE 1 is the high pressure knock-olf shower 14.
  • FIGURES 2 and 3 are shown details of the detector head assembly and the ldetector body 15 ⁇ which ⁇ supports the vacuum sensor 16.
  • Vacuum sensor 16 has a plurality of inlets 17 all leading to .an interconnecting header 18.
  • a pipe connection 13 is made to .the suction box vacuum chamber 12.
  • a connection 20' is made to a water supply, which is yused for routine cleaning of the sensor ⁇ 16.
  • FIG- URE 3 shows clearly how vacuum sensor 16 is kept in sealing contact with the inner surface of the lcouch roll 10, using a plurality of springs 21 to provide the necessary pressure.
  • FIGURE 4 shows a schematic arrangement of all the components.
  • the input side of a vacuum-recording controller 22 is connected to the detector head assembly in parallel with the connection 13 to vacuum chamber 12.
  • the output side of controller 22 is connected to Ia solenoid operated air valve 23 which operates an air operated water valve 24. This valve 24 controls the supply of high pressure water to knock-oit shower 14.
  • a ganged air/ water valve 25 which has a water connection at 2.0 to the detector head assembly and an air connection to the air operated water valve 24, in parallel with .the solenoid operated valve 23.
  • FIGURE l it will b e seen that when ⁇ the paper web -follows its normal path, the holes 17 in vacnum sensor 16 are open to atmosphere and, therefore air Will be drawn through via connection 13 into vacuum chamber 12.
  • the paper web breaks, it clings .to the suction couch and follows the path shown at 26'in FIG- URE 1.
  • This vacuum will Vbe communicated to the recording cont-roller 22 which wil-l record the time of the break and at the same time energize the solenoid operated air valve 23.
  • Valve 23 when energized, will operate the air operated water valve '24, which will then admit high pressure water to the .knocked shower .14. This lwill remove the web of paper 26 from ⁇ the underside ⁇ of the Fourdrinier Wire and direct it into the co-uch pit.
  • a water :supply is provided to allow periodical cleaning of holes 17. This is a manual operation using air/ water valve 25.
  • the operation of valve 25 also actuates the air operated water valve 24, thereby admitting high pressure water to the knock-olf shower 14. This covers the eventuality of a paper break occurring during the purging operation.
  • the present invention can be used with one or more detector head assemblies per suction roll, as required.
  • the present invention ⁇ due to its position and construction, senses a break the instant it occurs. Also there rare no electrical components on the machine itself, all the sensing being taken from ⁇ an existing pneumatic sounce.
  • the present invention uses the minimum amount of high pressure water, the knock-off shower being operated only when necessary.
  • Another Vfeature of the present invention lies in its fail safe characteristics; any blockage of the sensor inlet holes merely causing operation of the knock-oit shower.
  • Iclaimz 1 In a paper machine having a couch roll and a Fourdrinier wire carried thereby, the combination comprising a shower normally non-operating but adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and sensor means for automatically effecting operation of sai-d shower upon breakage of said paper web, said means being located at said couch roll.
  • the combination comprising a shower normally non-operating but adapted to be .actuated to prevent the paper web from clinging to said wire -in the event of breakage of said paper web and sensor means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and being pressure actuated.
  • a paper machine having a couch roll .and a Fourdrinier wire carried thereby, the combination comprising -a shower normally non-operating but adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including ⁇ a vacuum sensor.
  • a shower normally non-operating but adapted to be .actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web land means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including a vacuum sensor, said sensor being operatively connected to means for controlling the supply of water to said shower.
  • a paper machine having a couch roll and a Fourdrinier wire carried thereby, the -combination comprising a shower normally non-operating but adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including ⁇ a vacuum sensor and a water supply for cleaning said vacuum sensor.
  • a shower normally non-operating but ⁇ adapted to be actuated to prevent the paper web from clinging to 4 said wire in the event of breakage of said paper web and means ⁇ for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including :a vacuum sensor, said sensor being operatively connected to means for controlling the supply of water to said shower and a water supply for cleaning said vacuum sensor.
  • a paper machine having a couch roll, a Four- ⁇ drinier wire carried thereby and a vacuum chamber
  • the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being :adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web.
  • a paper machine having a couch roll, a Fourdrinier wire carried thereby and a vacuum chamber
  • the combination comprising a normally non-operating shower adapted to be ⁇ actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and a 4vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web and a water supply for 4cleaning said vacuum sensor.
  • a paper machine having a couch roll, a Fourdrinier wire carried thereby and a vacuum chamber
  • the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said Iwire in the event of breakage of said paper web and a vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web, said vacuum sensor means being positioned at said couch roll.
  • ⁇ a paper machine having a couch roll, a Fourdrinier wire carried thereby and a vacuum chamber
  • the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and Ia vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web, said vacuum sensor means being positioned at said couch roll and a water supply for cleaning said vacuum sensor.
  • a Fourdrinier wire carried thereby land a vacuum chamber the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and a vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon lblockage of said vacuum sensor upon breakage of said paper web, said vacvuum sensor means being positioned at said couch roll and said shower being positioned .adjacent said couch roll.

Description

July 16, 1963 D. A. GODDARD APPARATUS FOR AUTOMATIC KNOCK-OFF SHOWER FOR PAPER MACHINE Filed May 23, 1961 5 Sheets-Sheet 1 a R E w D N @www A Ww w .m.||||l I f N .El A NumX/IU 33o OP N\ IIE ZOCUUZZOQ*4 NUQQUI 7 i 4 VEUWH @255g mm2 n0 IPJE.. 5 wm m E W I l l Il D ZOTPUUZZOU 04ml NOPUUFUQ Y/QUN IODOU JJON. )(WOH Dux) Nul/Rr LO 1h49 JLNOZ A 5 Sheets-Sheet 2 .1in .N .MF
D. A. GODDARD July 16, 1963 APPARATUS PoR AUTOMATIC KNocK-OFP SHOWER FOR PAPER MACHINE Filed May 23, 1961 ZOFUUZZOU NPSS MGNDP ZOCUUZZOU .w NQ UI All,
July 16, 1963 D. A. GODDARD APPARATUS FOR AUTOMATIC KNOCK-OFF SHOWER FOR PAPER MACHINE Filed May 25, 1961 5 Sheets-Shea?l 3 NUOIW LRO IYUOZV.
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N. Nuvtcfu .LDDOJS OP ZOFUUZZOO nov?. ONOQXOLV NU 1] ONPZOO ),WW( D UI NOPOUPUQ AZOEuQNuAO 4432/5); U2] NMQS) HONDA fof a paper break occurring at -the couch.
United States Patent Otice 3,097,993 Patented July 16, 1963 3,097,993 APPARATUS lFOR AUTOMATIC KNOCK-OFF SHoWER FOR PAPER MACHINE Denis A. Goddard, Como, Quebec, Canada, assignor to Dominion Engineering Works Limited"- j v Filed May 23, 1961, Ser. No. 112,044
11 Claims. (Cl. 162-255) This invention relates to paper vmachinery and :has particular reference .to .new and im-proved `apparatus for removing the paper web Afrom a Fourdrinierwirein the event An object of the invention is to provide new and improved apparatus of the type set tort-h which is quick, reli- ,a-ble and sate.
Another object of the invention vis to provide Anew and improved .device of the typeset forth which senses a break `in `the paper web right at the couch and `as .close as possible to the actual break and which senses a break in the `paper web the instant it occurs.
Another Yobject of the invention is to provide a new and improved lapparat-us of the type set forth `which uses a minimum amount of high pressure wat-er and is operated only when necessary.
Another object vis to provide a device of the type s et forth which has fail safe characteristics whereby any blockage ofthe sensor inlet holes merely causes operation ,of the knock-oli? shower.
Other objects and advantages of the invention will be yapparent from the following description `taken in .connection with the accompanying drawings land it will be understood that .changes can be made Vinthe details of construction and arrangement of parts without departing from .the scopeof lthe invention as set forth in the accompanying claims, the preferred form having been shown by Way .of illustration only.
Referring to the drawings:
FIGURE 1 is a schematic view of the couch end of a paper machine Fourdrinier and `embodying the `present invention; Y
lFIGURE 2 is a plan view of the detector head assembly;
`FIGURE 3 is a sectional view taken on line 3 3 of FIGURE 2 looking in the direction of the arrows; `and -FIGURE 4 is .a schematic diagram of the invention showing the relative positions Iof the various components.
In ,the operation of a paper machine Fourdrinier, when the paper web .breaks at the couch, instead of passing directly from the cou-ch to the press section, it clings -to the Fourdrinier forming wire and passes around the couch and Ialong underneath the Fourdrinier, where it can cause damage and also fall in-to a section of the wire pit Vnot designed to accommodate it.
The purpose of -the present invention, therefore, is to remove the paper web from the Fourdrinier wire and pass into a pit vbelow the conch, designed to receive it.
One known method of achieving lthe above object is to provide a knock-off shower Ipositioned near the lcouch and running continuously, -to prevent the paper web clinging to the Fourdrinier wire.
Another method Iutilizes photoelectric cells on either sideof `the paper web, which complete an electrical circuit when the paper web -breaks and which in turn operates a knock-olf shower.
Another method has been to use manually operated valves to turn on a knock-off shower.
One big disadvantage ot the first method is that a continuously running vshower consumes an excessive amount of water. In addition, it dilutes the contents of the couch pit, causing great difficulty in maintaining stock consistencies. A
A .disadvantage of the photoelectric cell arrangement is that the sensing device'is usually positioned after Ione of the presses, giving a signal which is too late to `be effective. Also, the photoelectric cells eventually become covered with a thin film of paper stock and cease to sense a break in the paper.
In the manually operated valve arrangement, it is virtually impossible for the papenmaker to anticipate or catch the break in time, by manually Ioperating the water valve, especially at the .high speeds at which Ythe machines are operated.
The present invention provides an arrangement which senses a break in the paper web right at .the couch and as close as possible to the actual break.
Referring more particularly to the drawings wherein similar reference characters designate corresponding parts throughout, FIGURE l shows the couch end of a paper machine Fourdrinier containing a conventional suction couch assembly 10 and embodying the present invention shown generally at 11.
The suction couch ,assembly 10` contains a convention-al vacuum chamber 12 to which is attached the present Ainvention 11, positioned on the dry side. The invention shown at 11 comprises a detector head assembly which is in reality a vacuum chamber having a direct connection 13 to the main suction couch vacuum chamber 12. Also shown in FIGURE 1 is the high pressure knock-olf shower 14.
In FIGURES 2 and 3 are shown details of the detector head assembly and the ldetector body 15` which `supports the vacuum sensor 16. Vacuum sensor 16 has a plurality of inlets 17 all leading to .an interconnecting header 18. At one end 1-9 of header 18, a pipe connection 13 is made to .the suction box vacuum chamber 12. At the other end of header 18 is a connection 20' to a water supply, which is yused for routine cleaning of the sensor `16. FIG- URE 3 shows clearly how vacuum sensor 16 is kept in sealing contact with the inner surface of the lcouch roll 10, using a plurality of springs 21 to provide the necessary pressure.
FIGURE 4 shows a schematic arrangement of all the components. The input side of a vacuum-recording controller 22 is connected to the detector head assembly in parallel with the connection 13 to vacuum chamber 12. The output side of controller 22 is connected to Ia solenoid operated air valve 23 which operates an air operated water valve 24. This valve 24 controls the supply of high pressure water to knock-oit shower 14.
Also connected in the circuit is a ganged air/ water valve 25 which has a water connection at 2.0 to the detector head assembly and an air connection to the air operated water valve 24, in parallel with .the solenoid operated valve 23.
Referring to FIGURE l, it will b e seen that when `the paper web -follows its normal path, the holes 17 in vacnum sensor 16 are open to atmosphere and, therefore air Will be drawn through via connection 13 into vacuum chamber 12. When the paper web breaks, it clings .to the suction couch and follows the path shown at 26'in FIG- URE 1. This causes the holes 17 in vacuum sensor `16 to be sealed oil, and a high vacuum then occurs in header 18. This vacuum will Vbe communicated to the recording cont-roller 22 which wil-l record the time of the break and at the same time energize the solenoid operated air valve 23. Valve 23, when energized, will operate the air operated water valve '24, which will then admit high pressure water to the .knocked shower .14. This lwill remove the web of paper 26 from` the underside `of the Fourdrinier Wire and direct it into the co-uch pit.
To keep the holes 17 in vacuum sensor 16 clean and open and thereby avert unnecessary operation of Vknockoilpshower 14, a water :supply is provided to allow periodical cleaning of holes 17. This is a manual operation using air/ water valve 25. The operation of valve 25 also actuates the air operated water valve 24, thereby admitting high pressure water to the knock-olf shower 14. This covers the eventuality of a paper break occurring during the purging operation.
The present invention can be used with one or more detector head assemblies per suction roll, as required.
The detailed design of the present invention could be varied in many ways, such as with the substitution of pneumatic pressure instead of springs to hold vacuum sensor 16 in sealing contact with the inner surface of suction couch 10.
It will be seen that the present invention, `due to its position and construction, senses a break the instant it occurs. Also there rare no electrical components on the machine itself, all the sensing being taken from `an existing pneumatic sounce.
The present invention uses the minimum amount of high pressure water, the knock-off shower being operated only when necessary.
Another Vfeature of the present invention lies in its fail safe characteristics; any blockage of the sensor inlet holes merely causing operation of the knock-oit shower.
From the foregoing it will be seen that I have provided new and improved means for obtaining all of the objects and a-dvantage of this invention.
Iclaimz 1. In a paper machine having a couch roll and a Fourdrinier wire carried thereby, the combination comprising a shower normally non-operating but adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and sensor means for automatically effecting operation of sai-d shower upon breakage of said paper web, said means being located at said couch roll.
2. In la paper machine having a couch roll and a Fourdrinier wire carrie-d thereby, the combination comprising a shower normally non-operating but adapted to be .actuated to prevent the paper web from clinging to said wire -in the event of breakage of said paper web and sensor means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and being pressure actuated.
3. In a paper machine having a couch roll .and a Fourdrinier wire carried thereby, the combination comprising -a shower normally non-operating but adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including `a vacuum sensor.
4. In a paper machine having a couch roll and a Four-drinier wire carried thereby, the combination comprising -a shower normally non-operating but adapted to be .actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web land means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including a vacuum sensor, said sensor being operatively connected to means for controlling the supply of water to said shower.
5. In a paper machine having a couch roll and a Fourdrinier wire carried thereby, the -combination comprising a shower normally non-operating but adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and means for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including `a vacuum sensor and a water supply for cleaning said vacuum sensor.
`6. In a paper machine having a couch roll and a Fourdrinier wire carried thereby, the combination comprising a shower normally non-operating but `adapted to be actuated to prevent the paper web from clinging to 4 said wire in the event of breakage of said paper web and means `for automatically effecting operation of said shower upon breakage of said paper web, said means being located at said couch roll and including :a vacuum sensor, said sensor being operatively connected to means for controlling the supply of water to said shower and a water supply for cleaning said vacuum sensor.
7. In a paper machine having a couch roll, a Four- `drinier wire carried thereby and a vacuum chamber, the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being :adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web.
8. In a paper machine having a couch roll, a Fourdrinier wire carried thereby and a vacuum chamber, the combination comprising a normally non-operating shower adapted to be `actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and a 4vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web and a water supply for 4cleaning said vacuum sensor.
9. In a paper machine having a couch roll, a Fourdrinier wire carried thereby and a vacuum chamber, the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said Iwire in the event of breakage of said paper web and a vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web, said vacuum sensor means being positioned at said couch roll.
10. In `a paper machine having a couch roll, a Fourdrinier wire carried thereby and a vacuum chamber, the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and Ia vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon blockage of said vacuum sensor upon breakage of said paper web, said vacuum sensor means being positioned at said couch roll and a water supply for cleaning said vacuum sensor.
11. In a paper machine having a couch roll, a Fourdrinier wire carried thereby land a vacuum chamber, the combination comprising a normally non-operating shower adapted to be actuated to prevent the paper web from clinging to said wire in the event of breakage of said paper web and a vacuum sensor means adjacent said wire and connected to said vacuum chamber, means for controlling the supply of water to said shower, said means being adapted to be actuated upon lblockage of said vacuum sensor upon breakage of said paper web, said vacvuum sensor means being positioned at said couch roll and said shower being positioned .adjacent said couch roll.
References Cited in the le of this patent UNITED STATES PATENTS 1,604,138 Vidauer Oct. 26, 1926 1,634,885 Peschl July 5, 1927 1,692,112 Cram Nov. 20, 1928 1,838,603 Witham Dec. 29, 1931 2,244,864 Witham June 18, 1941 2,852,986 Western Sept. 23, 1958 2,864,284 Proffen Dec. 16, 1958

Claims (1)

11. IN A PAPER MACHINE HAVING A COUCH ROLL, A FOURDRINIER WIRE CARRIED THEREBY AND A VACUUM CHAMBER, THE COMBINATION COMPRISING A NORMALLY NON-OPERATION SHOWER ADAPTED TO BE ACTUATED TO PREVENT THE PAPER WEB FROM CLINGING TO SAID WIRE IN THE EVENT OF BREAKAGE OF SAID PAPER WEB AND A VACUUM SENSOR MEANS ADJACENT SAID WIRE AND CONNECTED TO SAID VACUUM CHAMBER, MEANS FOR CONTROLLING THE SUPPLY OF WATER TO SAID SHOWER SAID MEANS BEING ADAPTED TO BE ACTUATED UPON BLOCKAGE OF SAID VACUUM SENSOR UPON BREAKAGE OF SAID PAPER WEB, SAID VACUM SENSOR MEANS BEING POSITIONED AT SAID COUCH ROLL AND SAID SHOWER BEING POSITIONED ADJACENT SAID COUCH ROLL.
US112044A 1961-05-23 1961-05-23 Apparatus for automatic knock-off shower for paper machine Expired - Lifetime US3097993A (en)

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GB19713/62A GB947294A (en) 1961-05-23 1962-05-22 Improvements in or relating to papermaking machines

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245872A (en) * 1963-06-06 1966-04-12 Bird Machine Co Automatic shower for removing a broken web from a fourdrinier wire
US3291681A (en) * 1963-12-26 1966-12-13 Beloit Corp Knock off shower for papermaking machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9307486A (en) * 1992-11-25 1999-08-24 Beloit Technologies Inc Leaf break detector apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1604138A (en) * 1923-03-13 1926-10-26 Film Inspection Machine Compan Testing instrument
US1634885A (en) * 1926-03-22 1927-07-05 Frank A Peschl Paper-making machine
US1692112A (en) * 1927-02-18 1928-11-20 Great Northern Paper Co Method and apparatus for handling broke
US1838603A (en) * 1929-07-11 1931-12-29 Sr George S Witham Paper making machine
US2244864A (en) * 1937-08-25 1941-06-10 Jr George Stanford Witham Indicator and control, particularly for paper machines
US2852986A (en) * 1952-06-26 1958-09-23 Empire Paper Mills Ltd Couch roll structure for paper making machines
US2864284A (en) * 1953-03-30 1958-12-16 Proffen Hermann Apparatus for interrupting the formation of transverse rents in paper webs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1604138A (en) * 1923-03-13 1926-10-26 Film Inspection Machine Compan Testing instrument
US1634885A (en) * 1926-03-22 1927-07-05 Frank A Peschl Paper-making machine
US1692112A (en) * 1927-02-18 1928-11-20 Great Northern Paper Co Method and apparatus for handling broke
US1838603A (en) * 1929-07-11 1931-12-29 Sr George S Witham Paper making machine
US2244864A (en) * 1937-08-25 1941-06-10 Jr George Stanford Witham Indicator and control, particularly for paper machines
US2852986A (en) * 1952-06-26 1958-09-23 Empire Paper Mills Ltd Couch roll structure for paper making machines
US2864284A (en) * 1953-03-30 1958-12-16 Proffen Hermann Apparatus for interrupting the formation of transverse rents in paper webs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245872A (en) * 1963-06-06 1966-04-12 Bird Machine Co Automatic shower for removing a broken web from a fourdrinier wire
US3291681A (en) * 1963-12-26 1966-12-13 Beloit Corp Knock off shower for papermaking machines

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