US1566358A - Doctor for paper machines - Google Patents
Doctor for paper machines Download PDFInfo
- Publication number
- US1566358A US1566358A US736027A US73602724A US1566358A US 1566358 A US1566358 A US 1566358A US 736027 A US736027 A US 736027A US 73602724 A US73602724 A US 73602724A US 1566358 A US1566358 A US 1566358A
- Authority
- US
- United States
- Prior art keywords
- doctor
- fingers
- bar
- paper machines
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
- D21G3/005—Doctor knifes
Definitions
- This invention relates to doctors for pa- 1 per machines, particularly to doctors of the type including a frame or bar and a doctor blade secured to the frame or bar, and in which the blade is constituted by an array of fingers adapted to enter into direct contact with the roll surface and individually Eesponsive to irregularities of the said surace.
- Fig. 1 is a diagrammatic section of a doctor in which the fin ers are urged by springs
- Fig. 2 a section 0 a doctor in which the fingers are backed by an envelope containing fluid under pressure
- Fig. 3 a fragmentary front elevation.
- the doctor illustrated includes a frame or bar 1 and a blade 2 secured to the frame or bar.
- the blade 2 presents at its operative edge an array of fingers 3 adapted to enter into direct contact with the surface of the roll 4 and arranged so as to be individually responsive to irregularities of the roll surface.
- the fingers are constituted by a blade having transverse sawcuts at intervals ofits length.
- each finger is backed by a spring 6 which is separate from the blade and urges the- 4: operative end of the finger towards the roll surface, the springs 6, in effect, constituting resilient means interposed between the fingers and the bar 1.
- the fingers are mounted on the bar so as to be individually ca able of deflection relatively thereto and t ere is interposed between the fingers and the bar resilient means constituted by an envelope 7 containing fluid such, for example, as water or air, under pressure regulatable to vary the resistance offered to movement of the fingers away from the roll surface.
- fluid such, for example, as water or air
- the roll surface 65 is, in effect, divided into annular strips'each of which is acted on by a separate finger.
- the invention is thus differentiated from prior constructions in .which spring-urged ngers act on a single blade extending from end to end of the roll surface.
- the fluid may be fed throug the envelope at a given rate so that the fluid acts as a cooling agent.
- a roll in combination, a roll, a bar, a blade'constituted'by an array of fingers adapted to enter into direct contact with the roll surface and individually I responsive to irregularities of the said surface, and resilient means separate from the blade and so interposed between said bar and fingers as to urge said fingers towards said roll surface.
- a doctor for paper machines com rising a bar, an array of fingers mounte on the bar and individually capable of deflection relatively thereto, and an envelope'containing fluid under pressure interposed be- 80 tween said fingers and said bar.
Description
Dec. 22, 1925.- 1,566,358 J. WHITE DOCTOR FOR PAPER MACHINES Filed Sept 5. 1924 Will/E! Patented Dec. 22, 1925.
UNITED STATES PATENT OFFICE.
JOHN WHITE, OF EDINBURGH, SCOTLAND, ASSIGNOR TO VICKERYS (1920) LIMITED, OF
LONDON, ENGLAND.
DOCTOR FOR PAPER MACHINES.
Application filed Septemberi, 1924. Serial No. 736,027.
To all whom it may concern:
Be it known that I, JOHN WHITE, a subject of the King of Great Britain and Northern Ireland, and residing at Edinburgh, Scotland, have invented a certain new and useful "Improvement in Doctors for Paper Machines, of which the following is a specification. 1
This invention relates to doctors for pa- 1 per machines, particularly to doctors of the type including a frame or bar and a doctor blade secured to the frame or bar, and in which the blade is constituted by an array of fingers adapted to enter into direct contact with the roll surface and individually Eesponsive to irregularities of the said surace.
By way of example two practical embodiments of the invention are illustrated in the accompanying drawing in which- Fig. 1 is a diagrammatic section of a doctor in which the fin ers are urged by springs, Fig. 2 a section 0 a doctor in which the fingers are backed by an envelope containing fluid under pressure and Fig. 3 a fragmentary front elevation. The doctor illustrated includes a frame or bar 1 and a blade 2 secured to the frame or bar. The blade 2 presents at its operative edge an array of fingers 3 adapted to enter into direct contact with the surface of the roll 4 and arranged so as to be individually responsive to irregularities of the roll surface. Conveniently,-the fingers are constituted by a blade having transverse sawcuts at intervals ofits length.
In the embodiment illustrated in Fig. 1.
each finger is backed by a spring 6 which is separate from the blade and urges the- 4: operative end of the finger towards the roll surface, the springs 6, in effect, constituting resilient means interposed between the fingers and the bar 1.
In the embodiment illustrated in Figs. 2 and 3 the fingers are mounted on the bar so as to be individually ca able of deflection relatively thereto and t ere is interposed between the fingers and the bar resilient means constituted by an envelope 7 containing fluid such, for example, as water or air, under pressure regulatable to vary the resistance offered to movement of the fingers away from the roll surface.
It will be seen that by virtue of the arrangement herein described the roll surface 65 is, in effect, divided into annular strips'each of which is acted on by a separate finger. The invention is thus differentiated from prior constructions in .which spring-urged ngers act on a single blade extending from end to end of the roll surface.
Where a fluid-containing envelo e is employed the fluid may be fed throug the envelope at a given rate so that the fluid acts as a cooling agent.
I claim 1. In a paper machine, in combination, a roll, a bar, a blade'constituted'by an array of fingers adapted to enter into direct contact with the roll surface and individually I responsive to irregularities of the said surface, and resilient means separate from the blade and so interposed between said bar and fingers as to urge said fingers towards said roll surface.
2. A doctor for paper machines com rising a bar, an array of fingers mounte on the bar and individually capable of deflection relatively thereto, and an envelope'containing fluid under pressure interposed be- 80 tween said fingers and said bar.
In testimony whereof I have signed my name to this specification.
JOHN WHITE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US736027A US1566358A (en) | 1924-09-05 | 1924-09-05 | Doctor for paper machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US736027A US1566358A (en) | 1924-09-05 | 1924-09-05 | Doctor for paper machines |
Publications (1)
Publication Number | Publication Date |
---|---|
US1566358A true US1566358A (en) | 1925-12-22 |
Family
ID=24958196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US736027A Expired - Lifetime US1566358A (en) | 1924-09-05 | 1924-09-05 | Doctor for paper machines |
Country Status (1)
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US (1) | US1566358A (en) |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445135A (en) * | 1944-12-18 | 1948-07-13 | Scott Paper Co | Doctor holder |
US2579181A (en) * | 1948-07-28 | 1951-12-18 | Time Inc | Enclosed gravure fountain |
US2602498A (en) * | 1948-09-03 | 1952-07-08 | Overton Machine Company | Evacuated drum drying machine |
US2691344A (en) * | 1949-10-20 | 1954-10-12 | Journal Company | Ink roll cleaning scraper for printing presses |
US2793475A (en) * | 1953-11-18 | 1957-05-28 | Glove City Abrading Company In | Guide and hold-down assembly for machines for abrading the surface of flexible materials |
US2914788A (en) * | 1957-02-22 | 1959-12-01 | D S T Pattern And Engineering | Doctor knives |
US3001296A (en) * | 1958-08-18 | 1961-09-26 | Bird Machine Co | Doctor arrangement |
DE1129818B (en) * | 1958-04-29 | 1962-05-17 | D S T Pattern & Engineering Co | Scraper for paper machine rolls |
US3040442A (en) * | 1959-04-27 | 1962-06-26 | Lyle S Overton | Blade assembly for drum dryers or the like |
US3057327A (en) * | 1959-03-04 | 1962-10-09 | Time Inc | Blade controlling device for coating apparatus |
US3070066A (en) * | 1957-08-06 | 1962-12-25 | Time Inc | Coating apparatus having blade control means and releasable blade holder |
US3079889A (en) * | 1959-06-03 | 1963-03-05 | Black Clawson Co | Paper machinery |
US3110919A (en) * | 1961-04-12 | 1963-11-19 | Owens Illinois Glass Co | Fluid spreader |
US3112512A (en) * | 1961-01-20 | 1963-12-03 | Arrault Raymonde Blanche | Apparatus for drawing on the ground broad stripes of paint or the like material |
US3116688A (en) * | 1959-12-23 | 1964-01-07 | Koppers Co Inc | Ink fountain |
US3143438A (en) * | 1960-07-26 | 1964-08-04 | West Virginia Pulp & Paper Co | Apparatus for coating web material |
US3273536A (en) * | 1961-06-26 | 1966-09-20 | Time Inc | Trailing-blade coater including fluid seal |
US3312166A (en) * | 1966-06-23 | 1967-04-04 | Gentile Frank | Adjustable wiper blade assembly for a roller fountain dampener |
US3377645A (en) * | 1965-08-04 | 1968-04-16 | Lodding Engineering Corp | Doctor support |
US3529315A (en) * | 1969-01-27 | 1970-09-22 | Lodding Engineering Corp | Doctor blade holder |
US3778861A (en) * | 1972-06-26 | 1973-12-18 | Lodding Engineering Corp | Bladeholders for doctors and scrapers |
US3795188A (en) * | 1971-03-12 | 1974-03-05 | Reggiani Spa | Fluid pressure biased squeegee blade and counter pressure table therefor |
DE2435527A1 (en) * | 1973-11-26 | 1975-05-28 | Beloit Italia Spa | DEVICE FOR REGULATING THE THICKNESS OF A PAPER WEB COATING |
US3901146A (en) * | 1971-02-15 | 1975-08-26 | Alsacienne Constr Meca | Squeegee mount for independent pressure and angle adjustments |
US3934502A (en) * | 1973-01-24 | 1976-01-27 | Morrison Machine Co. | Adjustable rotary screen printer with air-biased squeegees |
US4066014A (en) * | 1974-06-17 | 1978-01-03 | American Bank Note Company | Pressurized ink applicator for intaglio printing press |
US4078486A (en) * | 1975-02-24 | 1978-03-14 | Fritz Buser Ag Maschinenfabrik | Doctoring device with blade cushioning mount |
US4220113A (en) * | 1978-06-13 | 1980-09-02 | Gerhard Wohlfeil | Device for applying a coating to a material web |
US4243332A (en) * | 1978-08-09 | 1981-01-06 | International Business Machines Corporation | Electrode guide |
WO1981000905A1 (en) * | 1979-10-01 | 1981-04-02 | J Duprat | Fluidic presser of scraping member for processing apparatus with scraped surface |
US4344361A (en) * | 1979-04-19 | 1982-08-17 | Baldwin-Gegenheimer Corporation | Automatic blanket cylinder cleaner |
US4757763A (en) * | 1979-04-19 | 1988-07-19 | Baldwin Technology Corporation | Automatic blanket cylinder cleaner |
EP0702109A2 (en) | 1994-09-16 | 1996-03-20 | TZN Forschungs- und Entwicklungszentrum Unterlüss GmbH | Process and apparatus for continuously coating of a web |
WO2010120228A1 (en) * | 2009-04-14 | 2010-10-21 | Metso Paper, Inc. | A doctor blade arrangement and method in fibre processing |
-
1924
- 1924-09-05 US US736027A patent/US1566358A/en not_active Expired - Lifetime
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445135A (en) * | 1944-12-18 | 1948-07-13 | Scott Paper Co | Doctor holder |
US2579181A (en) * | 1948-07-28 | 1951-12-18 | Time Inc | Enclosed gravure fountain |
US2602498A (en) * | 1948-09-03 | 1952-07-08 | Overton Machine Company | Evacuated drum drying machine |
US2691344A (en) * | 1949-10-20 | 1954-10-12 | Journal Company | Ink roll cleaning scraper for printing presses |
US2793475A (en) * | 1953-11-18 | 1957-05-28 | Glove City Abrading Company In | Guide and hold-down assembly for machines for abrading the surface of flexible materials |
US2914788A (en) * | 1957-02-22 | 1959-12-01 | D S T Pattern And Engineering | Doctor knives |
US3070066A (en) * | 1957-08-06 | 1962-12-25 | Time Inc | Coating apparatus having blade control means and releasable blade holder |
DE1129818B (en) * | 1958-04-29 | 1962-05-17 | D S T Pattern & Engineering Co | Scraper for paper machine rolls |
US3001296A (en) * | 1958-08-18 | 1961-09-26 | Bird Machine Co | Doctor arrangement |
US3057327A (en) * | 1959-03-04 | 1962-10-09 | Time Inc | Blade controlling device for coating apparatus |
US3040442A (en) * | 1959-04-27 | 1962-06-26 | Lyle S Overton | Blade assembly for drum dryers or the like |
US3079889A (en) * | 1959-06-03 | 1963-03-05 | Black Clawson Co | Paper machinery |
DE1234512B (en) * | 1959-06-03 | 1967-02-16 | Black Clawson Co | Squeegees for paper coating machines |
US3116688A (en) * | 1959-12-23 | 1964-01-07 | Koppers Co Inc | Ink fountain |
US3143438A (en) * | 1960-07-26 | 1964-08-04 | West Virginia Pulp & Paper Co | Apparatus for coating web material |
US3112512A (en) * | 1961-01-20 | 1963-12-03 | Arrault Raymonde Blanche | Apparatus for drawing on the ground broad stripes of paint or the like material |
US3110919A (en) * | 1961-04-12 | 1963-11-19 | Owens Illinois Glass Co | Fluid spreader |
US3273536A (en) * | 1961-06-26 | 1966-09-20 | Time Inc | Trailing-blade coater including fluid seal |
US3377645A (en) * | 1965-08-04 | 1968-04-16 | Lodding Engineering Corp | Doctor support |
US3312166A (en) * | 1966-06-23 | 1967-04-04 | Gentile Frank | Adjustable wiper blade assembly for a roller fountain dampener |
US3529315A (en) * | 1969-01-27 | 1970-09-22 | Lodding Engineering Corp | Doctor blade holder |
US3901146A (en) * | 1971-02-15 | 1975-08-26 | Alsacienne Constr Meca | Squeegee mount for independent pressure and angle adjustments |
US3795188A (en) * | 1971-03-12 | 1974-03-05 | Reggiani Spa | Fluid pressure biased squeegee blade and counter pressure table therefor |
US3778861A (en) * | 1972-06-26 | 1973-12-18 | Lodding Engineering Corp | Bladeholders for doctors and scrapers |
US3934502A (en) * | 1973-01-24 | 1976-01-27 | Morrison Machine Co. | Adjustable rotary screen printer with air-biased squeegees |
DE2435527A1 (en) * | 1973-11-26 | 1975-05-28 | Beloit Italia Spa | DEVICE FOR REGULATING THE THICKNESS OF A PAPER WEB COATING |
US4066014A (en) * | 1974-06-17 | 1978-01-03 | American Bank Note Company | Pressurized ink applicator for intaglio printing press |
US4078486A (en) * | 1975-02-24 | 1978-03-14 | Fritz Buser Ag Maschinenfabrik | Doctoring device with blade cushioning mount |
US4220113A (en) * | 1978-06-13 | 1980-09-02 | Gerhard Wohlfeil | Device for applying a coating to a material web |
US4243332A (en) * | 1978-08-09 | 1981-01-06 | International Business Machines Corporation | Electrode guide |
US4344361A (en) * | 1979-04-19 | 1982-08-17 | Baldwin-Gegenheimer Corporation | Automatic blanket cylinder cleaner |
US4757763A (en) * | 1979-04-19 | 1988-07-19 | Baldwin Technology Corporation | Automatic blanket cylinder cleaner |
WO1981000905A1 (en) * | 1979-10-01 | 1981-04-02 | J Duprat | Fluidic presser of scraping member for processing apparatus with scraped surface |
EP0702109A2 (en) | 1994-09-16 | 1996-03-20 | TZN Forschungs- und Entwicklungszentrum Unterlüss GmbH | Process and apparatus for continuously coating of a web |
US5601868A (en) * | 1994-09-16 | 1997-02-11 | Tzn Forschungs- Und Entwicklungszentrum Gmbh | Method of coating sheet material with an oscillating doctor blade |
EP0702109A3 (en) * | 1994-09-16 | 1997-05-07 | Tzn Forschung & Entwicklung | Process and apparatus for continuously coating of a web |
US5746833A (en) * | 1994-09-16 | 1998-05-05 | Tzn Forschungs- Und Entwicklungszentrum Unterluss Gmbh | Apparatus for continuously applying a coating to a sheet of indeterminate length |
WO2010120228A1 (en) * | 2009-04-14 | 2010-10-21 | Metso Paper, Inc. | A doctor blade arrangement and method in fibre processing |
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