US2881503A - Method for cutting up plastic and semi-plastic masses - Google Patents

Method for cutting up plastic and semi-plastic masses Download PDF

Info

Publication number
US2881503A
US2881503A US571276A US57127656A US2881503A US 2881503 A US2881503 A US 2881503A US 571276 A US571276 A US 571276A US 57127656 A US57127656 A US 57127656A US 2881503 A US2881503 A US 2881503A
Authority
US
United States
Prior art keywords
cutting
plastic
mass
jet
liquid
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
US571276A
Inventor
Johnson Carl Olof
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.)
DUROX INTERNATIONAL SA
Original Assignee
DUROX INTERNATIONAL SA
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 DUROX INTERNATIONAL SA filed Critical DUROX INTERNATIONAL SA
Application granted granted Critical
Publication of US2881503A publication Critical patent/US2881503A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0036—Cutting means, e.g. water jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
    • B28B11/145—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for dividing block-shaped bodies of expanded materials, e.g. cellular concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0591—Cutting by direct application of fluent pressure to work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/263—With means to apply transient nonpropellant fluent material to tool or work

Definitions

  • the material to be used In the manufacture of light weight concrete, the material to be used, admixed with comparatively large amounts of water, is poured into molds, the size of which is usually considerably bigger than thesize of the building blocks to be manufactured; The mass is expanded e.g. by means of aluminum powder and when it has become so hard that it is semi-plastic and unyielding, it can be cut up into smaller units.
  • the cutting up can be made in different Ways. Originally it was effected by pressing down some kind of cutting device, e.g. thin plates into the light weight concrete mass. The blocks manufactured in this manner, however, did not have sufliciently exact dimensions, and the surface as cut up was so smooth that it did not offer a satisfactory base for being plastered. When manufacturing blocks in comparatively deep molds, this method was found to be quite unsatisfactory, and therefore it was tried to solve the cutting up problem in other ways.
  • the cutting up method which is at present most frequently used is effected by letting down the mold walls and sawing the light weight concrete mass by means of wires provided with projections, e.g. balls.
  • This method has considerable advantages over the cutting up 'method by means of thin plates, but involves several inconveniences.
  • the letting up and down of the mold walls requires comparatively much work and time.
  • the material which loosens at the sawing sticks fast to the sawing device and necessitates frequent cleaning.
  • big molds it has been found that the precision of the dimensions of the manufactured blocks is not satisafctory.
  • the same effect may be obtained by keeping the speed of flow constant while varying the specific gravity of the fluid.
  • the specific gravity may be increased by using a gas having a higher specific gravity or by dispersing liquid or solid particles in the gas.
  • a higher specific gravity can be obtained by using a different liquid or by dissolving salts in the liquid, or by dispersing a solid substance in the liquid.
  • Water has been found to be the most suitable medium for cutting according to the present method. It has been found that also be flat, being then suitably extended the water used for cutting is totally absorbed by the porous light weight concrete. The water thus absorbed involves an advantage, since it reduces the deficiency of water which will easily arise when the light weight concrete mass is setting. It is of course also possible to influence the cutting velocity by arranging several consecutive nozzles so that they work in the same cut, or by shaping the orifices of the nozzles as slits.
  • the first nozzle When coordinating a plurality of nozzles for making one cut the first nozzle should preferably be arranged adjacent to the body to be cut up, whereas the following nozzles are inserted into the cut produced by the first nozzle.
  • the nozzzles may be arranged in any position relative to the body to be cut, above, below or beside it.
  • the nozzles may also be made movable so that the direction of the jet may be altered. This makes it possible to manufacture blocks having extremely varying shapes, using one cutting device, which was earlier impossible.
  • the jet of fluid is preferably circular, but may of course in the cutting direction, at least if the width is essential.
  • the thickness of the jet should be as small as possible, but the smaller the thickness, the higher the demands for a high pressure, determining of course a lower thickness limit.
  • a jet thickness above 5 millimeters is probably out of question.
  • water is used for the jet, said water will be absorbed by the concrete mass, up to a certain extent, depending on the dryness of the mass. If the jet thickness exceeds a certain value, some water will flow away. If a considerable amount of water flows away, difficulties may arise, determining an upper limit for the jet thickness. Practically, a jet thickness of 0.52 millimeters has been found to be suitable when using a water jet.
  • the bottom 1 designates the bottom portion of a mold, the walls of which have been removed.
  • the bottom 1 carries a light weight concrete body 2, and is supported by supporting members 3, secured to a wheeled frame or carriage 4.
  • Water tubes 5 and 7 respectively, are provided above and below the concrete body 2, respectively, each tube having eight nozzles 6 and 8, respectively.
  • the tubes are guided in brackets 9 and 10, respectively so to be movable longitudinally. Said longitudinal movement is effected by means of a guide member 11, engaging with arms 12 and 13 secured to the tubes 5 and 7, respectively.
  • the guide member 11 extends longitudinally along the whole length of the block 2, and is secured to the supporting member 3. Consequently, the guide member 11 accompanies the body 2 in its movement during cutting.
  • the shape of the longitudinal cuts in the body 2 will depend on the shape of the guide member 11.
  • the central portion of the guide member has a bent portion 24. Accordingly, the longitudinal cut will obtain a portion which is correspondingly bent.
  • the nozz'les 6, 8 may be arranged so as to be turnable in the transverse direction. By this,'the apparatus may easily be altered so as to manufacture smaller light weight concrete pieces of a difierent shape.
  • the high pressure water is generated by a pump 16, driven by a motor 15.
  • the water flows through a water pressure chamber 17, provided with a pressure indicator 22 and a levellindicator 23, and if desired with a pressure regulator, and through a pipe 19, provided with a valve 18, and through flexible tubes 20, 21'into the tubes and .7, respectively.
  • a method of cutting a mass of light weight concrete in its set but unhardened state comprising the step of directing a jet of a fluid substantially consisting of an aqueousliqui'd into the concrete mass, the amount of said liquid being so limited that the liquid will be substantially completely absorbed by the walls of the cut surfaces of said mass.
  • the method of cutting a mass of light weight concrete in its set but unhardened state comprising the step of directing into the concrete mass a jet of approximately 2 .millimeter thickness substantially consisting of an aqueous'liq11id,the amount of said liquid being so limited that the liquid will be substantially completely absorbed by the walls 'of 'the cut surfaces of said mass.
  • the method of cutting a mass of light weight concrete in its set but 'unhardened state comprising the step of directing a jet of a fluidisubstantially consisting of an aqueous liquid into the concrete mass, the amount of said liquid being so limited that the liquid will be substantially completely absorbed by 'the'wall's of the cut surfaces of the mass, moving said concrete mass relative to said liquid jet, and varying the cutting force -of said fluid jet by varying the specific gravity of the fluid.
  • dissolving salts in said liquid to vary the cutting force of said fluid jet by variation of the fluid gravity of theliquid thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Structural Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

April 14, 1959 c. o. JO NSON 1,5
mamou FOR-CUTTING UP PLASTIC AND SEMI-PLASTIC MASSES Filed uarch'ls, i956 United States Patent METHOD FOR CUTTING UP PLASTIC AND SEMI-PLASTIC MASSES Carl Olof Johnson, Skovde, Sweden, assiguor to Durox International S.A., Luxembourg, Luxembourg, a company of Sweden Application March 13, 1956, Serial No. 571,276 Claims priority, application Sweden March 16, 1955 4 Claims. (Cl. 25-155) The present invention refers to cutting up plastic or semi-plastic masses, particularly in connection with the manufacture of light weight concrete.
In the manufacture of light weight concrete, the material to be used, admixed with comparatively large amounts of water, is poured into molds, the size of which is usually considerably bigger than thesize of the building blocks to be manufactured; The mass is expanded e.g. by means of aluminum powder and when it has become so hard that it is semi-plastic and unyielding, it can be cut up into smaller units.
The cutting up can be made in different Ways. Originally it was effected by pressing down some kind of cutting device, e.g. thin plates into the light weight concrete mass. The blocks manufactured in this manner, however, did not have sufliciently exact dimensions, and the surface as cut up was so smooth that it did not offer a satisfactory base for being plastered. When manufacturing blocks in comparatively deep molds, this method was found to be quite unsatisfactory, and therefore it was tried to solve the cutting up problem in other ways.
The cutting up method which is at present most frequently used is effected by letting down the mold walls and sawing the light weight concrete mass by means of wires provided with projections, e.g. balls. This method has considerable advantages over the cutting up 'method by means of thin plates, but involves several inconveniences. Thus, the letting up and down of the mold walls requires comparatively much work and time. The material which loosens at the sawing sticks fast to the sawing device and necessitates frequent cleaning. When using big molds it has been found that the precision of the dimensions of the manufactured blocks is not satisafctory.
According to the present invention all said drawbacks can be avoided, and simultaneously the cutting up device is simpler and independent of the construction and size of the molds. This is according to the invention obtained by cutting by means of a thin jet of a fluid, a liquid or a gas, having a high speed, which is directed towards the mass to be cut up and is moved along the line where the cutting is to be effected. Owing to the moving force of the liquid or gas the jet will make a channel in the porous light weight concrete mass, and as the fluid nozzle and the light weight concrete mass move mutually, there will be formed a slit in the mass. By increasing or decreasing respectively, the velocity of the fluid, its depth of penetration may be varied, or the cutting velocity may be increased or decreased, respectively. The same effect may be obtained by keeping the speed of flow constant while varying the specific gravity of the fluid. -In case the fluid consists of a gas the specific gravity may be increased by using a gas having a higher specific gravity or by dispersing liquid or solid particles in the gas. In case of a liquid a higher specific gravity can be obtained by using a different liquid or by dissolving salts in the liquid, or by dispersing a solid substance in the liquid. Water has been found to be the most suitable medium for cutting according to the present method. It has been found that also be flat, being then suitably extended the water used for cutting is totally absorbed by the porous light weight concrete. The water thus absorbed involves an advantage, since it reduces the deficiency of water which will easily arise when the light weight concrete mass is setting. It is of course also possible to influence the cutting velocity by arranging several consecutive nozzles so that they work in the same cut, or by shaping the orifices of the nozzles as slits.
When cutting very deep cuts it is also possible, besides the above method using a plurality of nozzles working in the same cut, to make the nozzle pass the same cut several times.
When coordinating a plurality of nozzles for making one cut the first nozzle should preferably be arranged adjacent to the body to be cut up, whereas the following nozzles are inserted into the cut produced by the first nozzle.
The nozzzles may be arranged in any position relative to the body to be cut, above, below or beside it. When using the type of molds which is traditionally used for the light weight concrete manufacture it is convenient to have the nozzles situated above the light weight concrete block to be cut up. The nozzles may also be made movable so that the direction of the jet may be altered. This makes it possible to manufacture blocks having extremely varying shapes, using one cutting device, which was earlier impossible.
The jet of fluid is preferably circular, but may of course in the cutting direction, at least if the width is essential. As a principle, the thickness of the jet should be as small as possible, but the smaller the thickness, the higher the demands for a high pressure, determining of course a lower thickness limit. A jet thickness above 5 millimeters is probably out of question. In case water is used for the jet, said water will be absorbed by the concrete mass, up to a certain extent, depending on the dryness of the mass. If the jet thickness exceeds a certain value, some water will flow away. If a considerable amount of water flows away, difficulties may arise, determining an upper limit for the jet thickness. Practically, a jet thickness of 0.52 millimeters has been found to be suitable when using a water jet.
The invention will be hereinafter described more in detail with reference to the drawing which shows an elevation of an apparatus for carrying out the method according to the invention.
In the drawing 1 designates the bottom portion of a mold, the walls of which have been removed. The bottom 1 carries a light weight concrete body 2, and is supported by supporting members 3, secured to a wheeled frame or carriage 4.
Water tubes 5 and 7 respectively, are provided above and below the concrete body 2, respectively, each tube having eight nozzles 6 and 8, respectively. The tubes are guided in brackets 9 and 10, respectively so to be movable longitudinally. Said longitudinal movement is effected by means of a guide member 11, engaging with arms 12 and 13 secured to the tubes 5 and 7, respectively. The guide member 11 extends longitudinally along the whole length of the block 2, and is secured to the supporting member 3. Consequently, the guide member 11 accompanies the body 2 in its movement during cutting. It will easily be understood that the shape of the longitudinal cuts in the body 2 will depend on the shape of the guide member 11. By suitably shaping the guide member longitudinal cuts of any desired shape may be performed. In the illustrated embodiment, the central portion of the guide member has a bent portion 24. Accordingly, the longitudinal cut will obtain a portion which is correspondingly bent.
When operating the illustrated apparatus high pressure water is sprayed through the nozzles 6, 8, and the block is propelled'longitudinally by means of the wheeled frame 4. The jets from the nozzles 8 penetrate into the light weight concrete through longitudinal openings 14 in the bottom portion 1. 'In case a bottom portion is used having no such openings the nozzzles 8 are shut off, and the cutting up is effected by means of the jets from the nozzles6.
If desiretL the nozz'les 6, 8 may be arranged so as to be turnable in the transverse direction. By this,'the apparatus may easily be altered so as to manufacture smaller light weight concrete pieces of a difierent shape.
'The high pressure water is generated by a pump 16, driven by a motor 15. The water flows through a water pressure chamber 17, provided with a pressure indicator 22 and a levellindicator 23, and if desired with a pressure regulator, and through a pipe 19, provided with a valve 18, and through flexible tubes 20, 21'into the tubes and .7, respectively.
What is claimed is:
l. A method of cutting a mass of light weight concrete in its set but unhardened state comprising the step of directing a jet of a fluid substantially consisting of an aqueousliqui'd into the concrete mass, the amount of said liquid being so limited that the liquid will be substantially completely absorbed by the walls of the cut surfaces of said mass.
2. The method of cutting a mass of light weight concrete in its set but unhardened state comprising the step of directing into the concrete mass a jet of approximately 2 .millimeter thickness substantially consisting of an aqueous'liq11id,the amount of said liquid being so limited that the liquid will be substantially completely absorbed by the walls 'of 'the cut surfaces of said mass.
3. The method of cutting a mass of light weight concrete in its set but 'unhardened state comprising the step of directing a jet of a fluidisubstantially consisting of an aqueous liquid into the concrete mass, the amount of said liquid being so limited that the liquid will be substantially completely absorbed by 'the'wall's of the cut surfaces of the mass, moving said concrete mass relative to said liquid jet, and varying the cutting force -of said fluid jet by varying the specific gravity of the fluid.
4. 'The method of cuttinga'mass of light Weight'concrete in its set but unhar'dened state comprising the step of directing into the concrete mass a jet of approximately 2 millimeter thickness of a fluid substantially consisting of an .aqueous liquid, the amount of said liquid being so limited that the liquid will 'be substantially completely absorbed by the :Walls of the cut surfaces of said mass, moving said concrete mass relative to said liquid jet, and
dissolving salts in said liquid to vary the cutting force of said fluid jet by variation of the fluid gravity of theliquid thereof.
References Cited in the file of this patent UNITED STATES PATENTS "1,'504;645 Rice Aug. 12, '1924 092,083 Ogle-et a1. 'Sept. 7, 1937 2,489,784 Kerr Nov. '29, 1949 2,694,846 -Olssonet al. 'Nov. '23, 1954 2,696,049 Black Dec. '7, 1954 FOREIGN PATENTS 843,130 France Mar. 20, 1939
US571276A 1955-03-16 1956-03-13 Method for cutting up plastic and semi-plastic masses Expired - Lifetime US2881503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2881503X 1955-03-16

Publications (1)

Publication Number Publication Date
US2881503A true US2881503A (en) 1959-04-14

Family

ID=20427649

Family Applications (1)

Application Number Title Priority Date Filing Date
US571276A Expired - Lifetime US2881503A (en) 1955-03-16 1956-03-13 Method for cutting up plastic and semi-plastic masses

Country Status (1)

Country Link
US (1) US2881503A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985050A (en) * 1958-10-13 1961-05-23 North American Aviation Inc Liquid cutting of hard materials
US3021019A (en) * 1957-03-03 1962-02-13 Internat Ytong Stabalite Co Lt Device for the separation of concrete bodies
US3133333A (en) * 1959-09-03 1964-05-19 Bergling Charles Gunnar Birger Mould for the manufacture of lightweight concrete blocks
US3136649A (en) * 1961-02-23 1964-06-09 Kimberly Clark Co Manufacture of cellulosic products
US3154603A (en) * 1961-08-02 1964-10-27 American Cyanamid Co Process for the preparation of spherical contact particles
US3209409A (en) * 1962-11-19 1965-10-05 Kenneth T Grathwohl Mold for plastic safety razors
US3213170A (en) * 1961-01-05 1965-10-19 Bayer Ag Process for the manufacture of granulated material of cylindrical or other form
US3225412A (en) * 1963-09-06 1965-12-28 Eric H Widell Plastic mass-forming apparatus
US3985848A (en) * 1974-12-05 1976-10-12 Bredero Price, B.V. Method for cutting concrete coated pipe
US4183987A (en) * 1978-07-07 1980-01-15 United States Gypsum Company Kerfed edge gypsum board having improved edge strength
EP0197502A2 (en) * 1985-04-03 1986-10-15 Nitto Boseki Co., Ltd. High pressure fluid processing device
EP0223445A2 (en) * 1985-11-08 1987-05-27 Imperial Chemical Industries Plc Refractory oxide shaped articles
FR2596389A1 (en) * 1986-04-01 1987-10-02 Villeroy & Boch METHOD FOR FORMING AN ARBITRARY DRAWING OR ARBITRARY EXTERIOR IN A CERAMIC OBJECT AND OBJECT PRODUCED THEREBY
US4807361A (en) * 1987-08-06 1989-02-28 Romuald Raczkowski Cutting blade lubrication
EP0467845A2 (en) * 1990-07-17 1992-01-22 Gurit-Essex AG Process for cutting a adhesive plastic material, particularly an adhesive strip, and process for automatically depositing an adhesive shaped strip along the edge of a glass sheet
WO1999054099A1 (en) * 1998-04-17 1999-10-28 Rockline Industries, Inc. Multiple nozzle fluid cutting system for cutting webbed materials
CN104441217A (en) * 2014-11-29 2015-03-25 济南开元新型建筑材料有限公司 Automatic control device for building block cutting

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1504645A (en) * 1924-08-12 Method for manufacturing forms of cement
US2092083A (en) * 1937-01-21 1937-09-07 Liberty Mirror Works Apparatus for cutting openings by abrasion
FR843130A (en) * 1938-09-03 1939-06-26 Marble working process
US2489784A (en) * 1946-07-02 1949-11-29 Thomas J Kerr Cutting apparatus
US2694846A (en) * 1951-04-05 1954-11-23 Siporex Int Ab Apparatus for cutting semiplastic bodies
US2696049A (en) * 1949-02-24 1954-12-07 Robert B Black Method of and apparatus for cutting tooth structure by means of an abrasive-laden stream of gas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1504645A (en) * 1924-08-12 Method for manufacturing forms of cement
US2092083A (en) * 1937-01-21 1937-09-07 Liberty Mirror Works Apparatus for cutting openings by abrasion
FR843130A (en) * 1938-09-03 1939-06-26 Marble working process
US2489784A (en) * 1946-07-02 1949-11-29 Thomas J Kerr Cutting apparatus
US2696049A (en) * 1949-02-24 1954-12-07 Robert B Black Method of and apparatus for cutting tooth structure by means of an abrasive-laden stream of gas
US2694846A (en) * 1951-04-05 1954-11-23 Siporex Int Ab Apparatus for cutting semiplastic bodies

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021019A (en) * 1957-03-03 1962-02-13 Internat Ytong Stabalite Co Lt Device for the separation of concrete bodies
US2985050A (en) * 1958-10-13 1961-05-23 North American Aviation Inc Liquid cutting of hard materials
US3133333A (en) * 1959-09-03 1964-05-19 Bergling Charles Gunnar Birger Mould for the manufacture of lightweight concrete blocks
US3213170A (en) * 1961-01-05 1965-10-19 Bayer Ag Process for the manufacture of granulated material of cylindrical or other form
US3136649A (en) * 1961-02-23 1964-06-09 Kimberly Clark Co Manufacture of cellulosic products
US3154603A (en) * 1961-08-02 1964-10-27 American Cyanamid Co Process for the preparation of spherical contact particles
US3209409A (en) * 1962-11-19 1965-10-05 Kenneth T Grathwohl Mold for plastic safety razors
US3225412A (en) * 1963-09-06 1965-12-28 Eric H Widell Plastic mass-forming apparatus
US3985848A (en) * 1974-12-05 1976-10-12 Bredero Price, B.V. Method for cutting concrete coated pipe
US4183987A (en) * 1978-07-07 1980-01-15 United States Gypsum Company Kerfed edge gypsum board having improved edge strength
EP0197502A2 (en) * 1985-04-03 1986-10-15 Nitto Boseki Co., Ltd. High pressure fluid processing device
EP0197502A3 (en) * 1985-04-03 1987-01-14 Nitto Boseki Co., Ltd. High pressure fluid processing device
US5028003A (en) * 1985-04-03 1991-07-02 Nitto Boseki Co., Ltd. High pressure fluid processing device
US5119990A (en) * 1985-04-03 1992-06-09 Nitto Boseki Co., Ltd. High pressure fluid processing device
EP0223445A2 (en) * 1985-11-08 1987-05-27 Imperial Chemical Industries Plc Refractory oxide shaped articles
EP0223445A3 (en) * 1985-11-08 1988-11-17 Imperial Chemical Industries Plc Refractory oxide shaped articles
FR2596389A1 (en) * 1986-04-01 1987-10-02 Villeroy & Boch METHOD FOR FORMING AN ARBITRARY DRAWING OR ARBITRARY EXTERIOR IN A CERAMIC OBJECT AND OBJECT PRODUCED THEREBY
US4807361A (en) * 1987-08-06 1989-02-28 Romuald Raczkowski Cutting blade lubrication
EP0467845A2 (en) * 1990-07-17 1992-01-22 Gurit-Essex AG Process for cutting a adhesive plastic material, particularly an adhesive strip, and process for automatically depositing an adhesive shaped strip along the edge of a glass sheet
EP0467845A3 (en) * 1990-07-17 1992-05-20 Gurit-Essex Ag Process for cutting a adhesive plastic material, particularly an adhesive strip, and process for automatically depositing an adhesive shaped strip along the edge of a glass sheet
WO1999054099A1 (en) * 1998-04-17 1999-10-28 Rockline Industries, Inc. Multiple nozzle fluid cutting system for cutting webbed materials
US6098512A (en) * 1998-04-17 2000-08-08 Rockline Industries, Inc. Multiple nozzle fluid cutting system for cutting webbed materials
CN104441217A (en) * 2014-11-29 2015-03-25 济南开元新型建筑材料有限公司 Automatic control device for building block cutting

Similar Documents

Publication Publication Date Title
US2881503A (en) Method for cutting up plastic and semi-plastic masses
RU2390391C2 (en) Device and method for cleaning of objects, in particular thin disks
US4111490A (en) Method and apparatus for channel cutting of hard materials using high velocity fluid jets
US8165713B2 (en) CNC abrasive fluid-jet milling
US7749049B2 (en) Submerged fluid jet polishing
US7455573B2 (en) Fluid jet polishing with constant pressure pump
GB1397676A (en) Machine and method for cutting brittle materials
US10926429B2 (en) Systems and methods for shaping materials
CN109624112B (en) Diamond wire cutting method
JP2016501740A (en) Instrument and method for cutting formable and / or disintegratable material
US3443803A (en) Roller arrangement in separating devices
NO120115B (en)
SE465672B (en) PROCEDURE SHOULD CUT GLASS WITH DIFFERENT THICKNESS MEANS A GRINDING FLUID DRAW
JPH0466818B2 (en)
US5332293A (en) Apparatus for cutting erosive materials using high pressure water device
US2978777A (en) Apparatus for making a plurality of vertical cuts through light-weight concrete
JP2000153517A (en) Wire saw
CN205521590U (en) Foam fritter one shot forming automatic cutting device
US3608967A (en) Method and apparatus for flame working mineral bodies
US4497101A (en) Method and apparatus for the manufacture of a three-dimensional, shaped graphite electrode utilizing a three-dimensional, shaped file
US3631758A (en) Process for grooving fluid-bearing bars, and resulting articles
KR100569739B1 (en) Process for working a quartz glass component
US3658453A (en) Method and apparatus for flame working mineral bodies
KR101558423B1 (en) Method for manufacturing polygonal stone panel with continuous pattern and storn panel made by the method
EP1618985A1 (en) Method for cutting ceramic pieces or elements