US1594941A - Pulp-testing device - Google Patents

Pulp-testing device Download PDF

Info

Publication number
US1594941A
US1594941A US519568A US51956821A US1594941A US 1594941 A US1594941 A US 1594941A US 519568 A US519568 A US 519568A US 51956821 A US51956821 A US 51956821A US 1594941 A US1594941 A US 1594941A
Authority
US
United States
Prior art keywords
drainage
pulp
cover
outlet
opening
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
Application number
US519568A
Inventor
Green Arthur Brooks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US519568A priority Critical patent/US1594941A/en
Application granted granted Critical
Publication of US1594941A publication Critical patent/US1594941A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/34Paper
    • G01N33/343Paper pulp

Definitions

  • My invention relates to an apparatus for testing the draining capacity of dierent kinds of paper pulp with a view of deter-L mining the characteristics of the resulting paper. This has been done by placing the sample of paper stock in a chamber or ves sel having a pervious drainage bottom and measuring the amount of water which drains olf in excess of a standard rate of drainage.
  • I provide a chamber with a pervious drainage bottom or outlet with an air tight cover to hold back the commencement of the drainage action and a vent opening preferably through the air tight cover for admitting air above the pulp so 'that drainage can be started as deslred at a standard and definite point or when the stock has been properly beaten.
  • the figure of the drawing represents a vertical section through the pulp-holding receptacle and the receiving funnel with a side elevation of the measuring receptacle at the bottom.
  • 1 represents a chambeiior drum open at the top and bottom but capable of being closed air tight by a hinged cover 2 at the top and 3 at the bottom, both covers being provided with suitable gaskets for formlng tight joints with the ends of the chamber.
  • the lower end of the chamber is closed by a pervious drainage 'bottom 4 secured in place by a suitable ring 5.
  • the cover 3 fits over the lower end of the chamber enclosing the drainage bottom 4.
  • the cover 2 is clamped in place by a clampY 6 and the cover 3 is clamped in place by a clamp 7 of well known construction.
  • a petcock 8 is placedlin the cover 2 to admit air when it is desired to start the drainage.
  • the drainage is caught by a funnel 9 placed beneath the chamber and the water is dschar ed through a standard opening 10' at the ttom of the funnel.
  • a short distance above the' opening 10 is a lateral duct l1 Yfor conveying off the water which accummulates above the outlet when the drainage is more rapid than the capacity of the-opening 10.
  • a hood l2 is placed above the inner end of the duct' 11 so that none of the descending liquid will enter the duct l1 which is only designed to receive the overflow from the body of liquid collecting above the outlet 10.
  • the liquid flowing off from the duct 1l is collected and measured in a graduate 13.
  • the pet cock is ⁇ now closed so that the upper end of the chamber will be hermetically sealed.
  • the lower cover 3 is now dropped down and pened leaving the drainage bottom expose No drainage, however, will take place owing to the air 'tight cover 2 being closed until the pet cock 8 is opened for the purpose of starting the drainage.
  • a device for testing pulp comprising, in
  • a xed vessel having a pervious bottom and a removable cover therefor, and having a top openingthrough which the pulp can be inserted and thoroughly mixed by stirring; a closure for said top opening having a valved inlet; and means below said bottom adapted upon the removal of said bottom cover and the opening of said valved inlet to receive the drainage through said pervious bottom; said means comprising a funnel-shaped receptacle having a bottom outlet of predetermined dis' charge capacity; a second outlet through the wall of thereceptacle having its opening guarded against direct reception of the drainage and arranged to discharge by over- How the drainage in excess of that passing through the bottom opening; and means to collect the drainage discharged through said second outlet.
  • a device for testing pulp comprising, in combination, a fixed vessel of relatively large cross section having top and bottom openings; a pervious screen across said bottom opening; a removable cover for closing said-bottom opening and retaining the pulp in said vessel to permit stirring of the pulp through said top opening; a closure for said bottom; a receptacle below said vessel for receiving the drainage through said bottom, having an outlet of predetermined size for wastage of a portion of said drainage, and having a second outlet above the outlet of predetermined size, whereby the drainage in excess of said wasted portion vaccumulating and rising to said second outlet may be discharged, and means for'collecting said ydischarged excess, there being a guard in said receptacle above the second outlet preventing direct admission of the falling drainage into said second outlet.
  • the method of testing pulp which consists in temporarily holding the charge to be tested in an open fixed vessel having aA pervious bottom temporarily closed 'and while thus closed stirring the pulp with its surface exposed to free atmosphere, then sealing the top ofthe vessel and opening the bottom closure, admitting air to the vessel above the stirred pulp, whereby drainage of water therefrom occurs, and collecting said drainage discharged in excess of a predetermined rate.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Paper (AREA)

Description

Aug. 3 ,1926; v 1,594,941
A.- B..GREEN y PULP TESTNG DEVICE Filed Dec. 2, 1921 PATENT OFFICE.
ARTHUR BROOKS GREEN, OF LINCOLN, NEW HAMPSHIRE.
PULP-TESTING- DEVICE.
Application led December 2, 1921. Serial` No. 519.568.
My invention relates to an apparatus for testing the draining capacity of dierent kinds of paper pulp with a view of deter-L mining the characteristics of the resulting paper. This has been done by placing the sample of paper stock in a chamber or ves sel having a pervious drainage bottom and measuring the amount of water which drains olf in excess of a standard rate of drainage.
Apparatus designed on this principle has not been successful for various reasons, among them being the fact that the preliminary stirring given to the l stock befre drainage was liable to charge the sample with air and also because there was no delinite and standard starting point where the drainage began to take place.
According to my invention, I provide a chamber with a pervious drainage bottom or outlet with an air tight cover to hold back the commencement of the drainage action and a vent opening preferably through the air tight cover for admitting air above the pulp so 'that drainage can be started as deslred at a standard and definite point or when the stock has been properly beaten.
Other important features of my invention will be pointed out in the appended claims.
The figure of the drawing represents a vertical section through the pulp-holding receptacle and the receiving funnel with a side elevation of the measuring receptacle at the bottom.
Referring to the drawing, 1 represents a chambeiior drum open at the top and bottom but capable of being closed air tight by a hinged cover 2 at the top and 3 at the bottom, both covers being provided with suitable gaskets for formlng tight joints with the ends of the chamber.
The lower end of the chamber is closed by a pervious drainage 'bottom 4 secured in place by a suitable ring 5. The cover 3 fits over the lower end of the chamber enclosing the drainage bottom 4. The cover 2 is clamped in place by a clampY 6 and the cover 3 is clamped in place by a clamp 7 of well known construction.
For the purpose of venting the space above the pulp, a petcock 8 is placedlin the cover 2 to admit air when it is desired to start the drainage.
The drainage is caught by a funnel 9 placed beneath the chamber and the water is dschar ed through a standard opening 10' at the ttom of the funnel. A short distance above the' opening 10 is a lateral duct l1 Yfor conveying off the water which accummulates above the outlet when the drainage is more rapid than the capacity of the-opening 10.
A hood l2 is placed above the inner end of the duct' 11 so that none of the descending liquid will enter the duct l1 which is only designed to receive the overflow from the body of liquid collecting above the outlet 10.
The liquid flowing off from the duct 1l is collected and measured in a graduate 13.
In operation, the lower cover 3 is closed, the standard sample of pulp stock is poured into the chamber, the upper cover being open.v The stock is now thoroughly stirred until the 'surface is of a creamy consistency and then the cover 2 is closed with the pet cock 8 open.
The pet cock is` now closed so that the upper end of the chamber will be hermetically sealed.
The lower cover 3 is now dropped down and pened leaving the drainage bottom expose No drainage, however, will take place owing to the air 'tight cover 2 being closed until the pet cock 8 is opened for the purpose of starting the drainage.
It will thus be seen that the drainage is started in each sample after the stock is thoroughly stirred and after the drainage once begins, the stock is undisturbed until the operation is complete.
The conditions under which the drainage takes place `in veach sample are thus exactly alike and a very accurate test of the drainage capacity cfu the pulp may be made by the use of my apparatus.
1. A device for testing pulp comprising, in
combination, a xed vessel having a pervious bottom and a removable cover therefor, and having a top openingthrough which the pulp can be inserted and thoroughly mixed by stirring; a closure for said top opening having a valved inlet; and means below said bottom adapted upon the removal of said bottom cover and the opening of said valved inlet to receive the drainage through said pervious bottom; said means comprising a funnel-shaped receptacle having a bottom outlet of predetermined dis' charge capacity; a second outlet through the wall of thereceptacle having its opening guarded against direct reception of the drainage and arranged to discharge by over- How the drainage in excess of that passing through the bottom opening; and means to collect the drainage discharged through said second outlet.
2. A device for testing pulp comprising, in combination, a fixed vessel of relatively large cross section having top and bottom openings; a pervious screen across said bottom opening; a removable cover for closing said-bottom opening and retaining the pulp in said vessel to permit stirring of the pulp through said top opening; a closure for said bottom; a receptacle below said vessel for receiving the drainage through said bottom, having an outlet of predetermined size for wastage of a portion of said drainage, and having a second outlet above the outlet of predetermined size, whereby the drainage in excess of said wasted portion vaccumulating and rising to said second outlet may be discharged, and means for'collecting said ydischarged excess, there being a guard in said receptacle above the second outlet preventing direct admission of the falling drainage into said second outlet.
et. The method of testing pulp which consists in temporarily holding the charge to be tested in an open fixed vessel having aA pervious bottom temporarily closed 'and while thus closed stirring the pulp with its surface exposed to free atmosphere, then sealing the top ofthe vessel and opening the bottom closure, admitting air to the vessel above the stirred pulp, whereby drainage of water therefrom occurs, and collecting said drainage discharged in excess of a predetermined rate.
'ARTHUR BRooKs GREEN.
US519568A 1921-12-02 1921-12-02 Pulp-testing device Expired - Lifetime US1594941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US519568A US1594941A (en) 1921-12-02 1921-12-02 Pulp-testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US519568A US1594941A (en) 1921-12-02 1921-12-02 Pulp-testing device

Publications (1)

Publication Number Publication Date
US1594941A true US1594941A (en) 1926-08-03

Family

ID=24068869

Family Applications (1)

Application Number Title Priority Date Filing Date
US519568A Expired - Lifetime US1594941A (en) 1921-12-02 1921-12-02 Pulp-testing device

Country Status (1)

Country Link
US (1) US1594941A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546654A (en) * 1946-07-24 1951-03-27 Ablstrom Osakeyhteo A Contrivance for determining the degree of beating of fiber mass suspensions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546654A (en) * 1946-07-24 1951-03-27 Ablstrom Osakeyhteo A Contrivance for determining the degree of beating of fiber mass suspensions

Similar Documents

Publication Publication Date Title
JPS57137815A (en) Milk flow rate measuring apparatus
US3362222A (en) Fluid sampling apparatus and flowmeter
US1594941A (en) Pulp-testing device
US2307616A (en) Fuel tank
US2797150A (en) Apparatus for collecting a liquid sample
US2307318A (en) Sediment tester
US2541519A (en) Liquid sampling apparatus with gas trap
US2917926A (en) Means for extracting true proportionate samples of fluid material
US1089390A (en) Gas-analysis apparatus.
US1518160A (en) Milk dipper
SU808901A1 (en) Device for pulp sampling
US2206960A (en) Process and apparatus for breaking eggs and salvaging liquid egg material
US1892331A (en) Method and apparatus for dissolving salts
US3033028A (en) Analytical apparatus
US1416354A (en) Vacuum sampler for tanks of refined oil and gasoline
US2250968A (en) Measuring device
US1675775A (en) Apparatus for the treatment of crude oil
SU739372A1 (en) Device for measuring air content of concrete mix
US3156120A (en) Automatic sampling system
US3415380A (en) Sample preparation apparatus and unitary filter-pipette for use therein
US2119501A (en) Apparatus for measuring foreign matter present in liquids
US2178372A (en) Gas generator
JPS55142502A (en) Automatic asphalt separator
US2058587A (en) Milk sediment testing apparatus
US1400107A (en) chlorination apparatus