US2725696A - Diamond powder or bort formed during the grinding of diamonds - Google Patents

Diamond powder or bort formed during the grinding of diamonds Download PDF

Info

Publication number
US2725696A
US2725696A US399850A US39985053A US2725696A US 2725696 A US2725696 A US 2725696A US 399850 A US399850 A US 399850A US 39985053 A US39985053 A US 39985053A US 2725696 A US2725696 A US 2725696A
Authority
US
United States
Prior art keywords
blades
bort
hood
grinding
tray
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
US399850A
Other languages
English (en)
Inventor
Roos Siegfried
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.)
JOZEF KOMKOMMER
Original Assignee
JOZEF KOMKOMMER
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 JOZEF KOMKOMMER filed Critical JOZEF KOMKOMMER
Application granted granted Critical
Publication of US2725696A publication Critical patent/US2725696A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/12—Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like

Definitions

  • the present invention relates to an apparatus for recovering bort formed during the grinding of diamond on a horizontal grinding mill, in which apparatus at least one substantially radially directed catching screen is so provided against the lower side of a hood arranged over the grinding disc as to be slightly spaced from and to be distributed in circumferential direction over the upper .curnferential edge on a sub-structure comprising a circular tray-shaped bodyhaving a central aperture in .its
  • said plate being located at some distance above said bottom and closely below the grinding disc and one or a plurality of blades or retaining screens provided between said bottom and said covering plate.
  • this device can be received in a correspondingly shaped aperture in a table or like support, the grinding disc being driven via this aperture which registers with the central apertures in thesub-structure, by means of a vertical shaft passing through said apertures.
  • Such a device operates in the manner of a cyclone separator.
  • the grinding disc rotates the air below the hood is brought into turbulence and together with the bort which is formed therein by the grinding of .one or more diamonds, it is hurled against the blades of the hoodand via said blades and the upstanding wall of the tray of the substructure it is hurled against the blades of said substructure to be eventually discharged via the central apertures in the table and in the substructure.
  • a bort-retaining coating e. g. steel wool, gauze or the like provided with a sticky substance which retains the bort
  • this sub-structure can carry the bladesin a detachable manner, which is desirable in order to enable the blades to be replaced by new ones when they have sufiiciently performed their function of recovering bort.
  • pairs of bort catching and retaining blades are secured to the bottom of the sub-structure, the blades of each power.
  • the hood may consist of plastic or another material having or capable of-taking an electrostatic charge.
  • vFig. 1 is a vertical section of an apparatus according to the invention on line I-I,in Fig. 2;
  • Fig. 2 is a plan view thereof
  • FIG. 3 shows a construction detail
  • Fig. 4 is a vertical section on theline .IVIV :in Fig. 5 of an apparatus of modified construction, .the elements contained within the tray-shaped body of said apparatus bei g shown in elevation;
  • FIG. 6 is a plan view of the hood separately
  • Fig. 7 shows a detail (one blade) of the hood.
  • azflat hood 3 is arranged over a horizontal grinding disc 1 which'is secured on a'vertical spindle 2, which spindle extends downwards from the grinding disc 1 and which can be driven by asource'ot
  • the hood 3 is provided with fourrectangular openings 4 whichextend in radial direction and whichare uncovered and which. servefor passing .thediamondholding nieanstheredarough.
  • the "hood .3 made e. v g. from transparent plastic, has itsinnertside providedwith e. .g.
  • plastic catching screens or blades 5 the under side :of
  • the hood 3rests with :itscircumferential edge on a substructure comprising a circular tray-shaped body 6 having a central aperture V7 in its bottomand the upstanding wall of which is provided with a rim18 body 6 and parallel to said bottom a covering plate '10 provided with a central aperture 9 is arranged, which plate has its upper side located closely below the grinding disc 11.
  • lips 11 are bent downwardly out of the covering plate 10; to each lip 11a curvedcatching screen or blade 12 ;is detachably secured by means of .a
  • each of these blades 12. is furthermore detachably connected with the'bottom of the tray-shaped body by-rneans of vertical screws 14; the blades, therefore, are the supports of the covering plate and keep this plate in its :place because .they are secured to the said bottom.
  • the main elements are identical to the main elements of the embodiment according to Figs. 13.
  • a flat hood 3 is arranged over a horizontal grinding disc 1 which is secured on a vertical spindle 2, extending downwards from the grinding disc 1 and adapted to be power-driven.
  • the hood 3 which in this embodiment consists of two halves, is made of transparent plastic and is provided with four elongated openings 4 and two smaller elongated openings 17. All of said openings extend in radial direction and are uncovered; the openings 4 serve for passing the diamond holding means therethrough and for the entrance of air; the openings 17 serve also for the entrance of air between the adjacent openings 4.
  • the hood 3 is provided internally with bort catching screens or blades 5, which are integral with the hood proper and which with their under side are located closely above the grinding disc 1.
  • the hood 3 rests with its circumferential edge on a sub-structure comprising a circular tray-shaped body 6 having a central aperture 7 in its bottom 18 and the upstanding wall of which is provided with a rim 8, forming an accommodation for the circumferential edge of the hood 3.
  • each blade 19 has one end portion 21 circularly bent parallel or about parallel to the circular upstanding wall of the tray-shaped body 6 and spaced therefrom; the remaining portion 22 of each blade 19 is curved inwardly and extends up to the edge of the central aperture 7.
  • Each blade 20 is uniformly curved throughout its length and extends from the free extremity of the circularly bent end portion 21 of a blade 19 up to the edge of the aperture 7.
  • the curvature of the blade 20 is the same as that of the portion 22 of the blade 19 and the blades 19 and 20 of a pair are spaced from one another.
  • the six spaced sets of pairs of blades 19, 20 are encircled by a perforated, circular partition 23 spaced from the upstanding wall of the tray-shaped body 6.
  • a covering plate rests on the sets of blades 19, 20.
  • This covering-plate is provided at its circumferential edge with three clips 24 adapted to slidably engage corresponding outwardly bent lips 25 attached to the outer side of the circularly bent end portions 21 of three of the blades 19.
  • a bortretaining means e. g. a sticky substance.
  • the perforated partition 23 may also be coated with a bort-retaining means; this partition prevents small diamonds inadvertently fallen down through the openings 4 in the hood 3, from finding their way down through 4 the central aperture 7; they will now be received in the circular space 26 between the upstanding wall of the trayshaped body 6 and the perforated partition.
  • a sub-structure comprising a circular tray spaced below said disc and having a central aperture in its bottom, said tray having an upstanding wall at its periphery, a covering plate having a central aperture, said plate being located at some distance above the bottom of said tray and closely below said grinding disc and at least one catching screen provided between said bottom and said covering plate, and a hood arranged over the grinding disc and supported at its periphery by said upstanding Wall of said tray, at least one substantially radially directed catching screen on the lower face of said hood, said screen being slightly spaced from, and distributed in a circumferential direction over, the upper face of said disc.
  • An apparatus characterized in that the catching screens of the sub-structure are detachably secured both to the bottom of the tray and to the covering plate.
  • An apparatus characterized in that lips are bent downwardly out of the covering plate, to which lips the catching screens are detachably secured.
  • An apparatus characterized in that selected surfaces of members comprising the hood, the upstanding wall of the substructure and the various blades are coated by a bort-retaining means.
  • An apparatus characterized in that the covering plate is integral with at least one bort catching and retaining blade.
  • An apparatus characterized in that pairs of bort catching and retaining blades are secured to the bottom of said tray, the blades of each pair being curved inwardly and spaced from one another, and the pairs of blades being also spaced from one another, each blade extending from a point at some distance from the upstanding wall of the sub-structure towards the edge of the central aperture in the bottom of the substructure.
  • hood consists of plastic or another material having or capable of taking an electrostatic charge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
US399850A 1953-01-03 1953-12-23 Diamond powder or bort formed during the grinding of diamonds Expired - Lifetime US2725696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA2725696X 1953-01-03

Publications (1)

Publication Number Publication Date
US2725696A true US2725696A (en) 1955-12-06

Family

ID=25588448

Family Applications (1)

Application Number Title Priority Date Filing Date
US399850A Expired - Lifetime US2725696A (en) 1953-01-03 1953-12-23 Diamond powder or bort formed during the grinding of diamonds

Country Status (3)

Country Link
US (1) US2725696A (en(2012))
BE (1) BE525294A (en(2012))
NL (1) NL80681C (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307299A (en) * 1964-06-29 1967-03-07 Ahex Nv Device for regaining diamond grindings (boart) in diamond grinding

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1007272A (en) * 1911-04-27 1911-10-31 Walter E Crease Buffing-hood.
US1255040A (en) * 1917-04-02 1918-01-29 Edward William Ousley Gold-dust collector.
US1340213A (en) * 1919-05-31 1920-05-18 Ira A Burnett Gold-saving receptacle
US1374075A (en) * 1919-04-18 1921-04-05 David Stokely Etheridge Receptacle and separator for particles of gold and other precious metals
AT108742B (de) * 1925-01-09 1928-01-25 Alma Niefind Staubfänger für zahntechnische Schleifvorrichtungen.
US1742331A (en) * 1927-07-13 1930-01-07 Voigt Eduard Max Collecting cup
US2100344A (en) * 1937-01-22 1937-11-30 Gustav H Medart Buffing hood
US2470345A (en) * 1943-06-28 1949-05-17 Peters Dalton Inc Air washer
US2549529A (en) * 1947-11-10 1951-04-17 Alfred V Sandlin Magnetic chip collector for grinders

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1007272A (en) * 1911-04-27 1911-10-31 Walter E Crease Buffing-hood.
US1255040A (en) * 1917-04-02 1918-01-29 Edward William Ousley Gold-dust collector.
US1374075A (en) * 1919-04-18 1921-04-05 David Stokely Etheridge Receptacle and separator for particles of gold and other precious metals
US1340213A (en) * 1919-05-31 1920-05-18 Ira A Burnett Gold-saving receptacle
AT108742B (de) * 1925-01-09 1928-01-25 Alma Niefind Staubfänger für zahntechnische Schleifvorrichtungen.
US1742331A (en) * 1927-07-13 1930-01-07 Voigt Eduard Max Collecting cup
US2100344A (en) * 1937-01-22 1937-11-30 Gustav H Medart Buffing hood
US2470345A (en) * 1943-06-28 1949-05-17 Peters Dalton Inc Air washer
US2549529A (en) * 1947-11-10 1951-04-17 Alfred V Sandlin Magnetic chip collector for grinders

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307299A (en) * 1964-06-29 1967-03-07 Ahex Nv Device for regaining diamond grindings (boart) in diamond grinding

Also Published As

Publication number Publication date
BE525294A (en(2012))
NL80681C (en(2012))

Similar Documents

Publication Publication Date Title
US3606182A (en) Crushing chamber for a centrifugal impact rock crushing machine
DK162430B (da) Apparat til polering og blegning af korn
US3226257A (en) Continuous centrifugal apparatus
US1743441A (en) Spinner-balancing arrangement for laundry machines
US2725696A (en) Diamond powder or bort formed during the grinding of diamonds
US1589097A (en) Apparatus for continuously separating liquids from solids
US2004737A (en) Wood hog
NO145804B (no) Oppdelings- og blaaseapparat.
US2681598A (en) Paper machinery
US2262383A (en) Vegetable peeler
US2548812A (en) Centrifugal egg separator
SE8300347D0 (sv) Procedure and means for comminuting stumps
US2788937A (en) Centrifuge for separating solid components from liquids
US2129679A (en) Nut shelling machine
US3095022A (en) Meat comminutor
CN104399604B (zh) 一种离心机的布料装置
US1411177A (en) Apparatus for deshelling seeds having hard shells
US2280214A (en) Juice extractor
US2100117A (en) Apparatus for treating materials
US2682374A (en) Inclined axis rotary hammer and screen disintegrator with plural discharge structures
US1850150A (en) Machine for working liquid, pulverulent and granular masses
US2925180A (en) Continuous centrifugal extractor
US2414645A (en) Combined clothes receptacle and extractor for laundering machines
US2715306A (en) Apparatus for the recovery of diamond powder or bort
US1968862A (en) Air separator