US2715306A - Apparatus for the recovery of diamond powder or bort - Google Patents

Apparatus for the recovery of diamond powder or bort Download PDF

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Publication number
US2715306A
US2715306A US277126A US27712652A US2715306A US 2715306 A US2715306 A US 2715306A US 277126 A US277126 A US 277126A US 27712652 A US27712652 A US 27712652A US 2715306 A US2715306 A US 2715306A
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US
United States
Prior art keywords
grinding wheel
bort
catching
hood
grinding
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
US277126A
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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 US2715306A publication Critical patent/US2715306A/en
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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
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • 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

  • This invention relates to a method and an apparatus for the recovery of diamond powder, the so-called bort. It is known to rub bort with a few drops of oil on a grinding wheel made e. g.
  • the invention has for its object to improve this uneconomical state of things.
  • the bort formed during the grinding of one or more diamonds on the grinding wheel, which bort is suspended in the air, is collected either by sucking it to a collecting place, or by catching it by means of one or more catching faces which are arranged in the path of movement of the diamond powder or bort which is produced during the grinding of the diamond and which is partly suspended in the air; when these catching faces are made e. g. of metal they can be covered at the catching side with an adhesive substance, e. g. one of the known fats to which bort will adhere; if the catching faces are made of a material which has an electrostatic charge or to which such a charge has been given e. g. by friction, the covering of the catching side with an adhesive substance is not necessary; an example of a material that can be used Without an adhesive substance is plastic.
  • the invention it is possible to arrange at a slight distance above the grinding Wheel one or more catching screens distributed over the upper side of the grinding wheel, one side of whichif they are made from metal, at least not from plastic or another material having or capable of taking an electrostatic charge-is covered with a sticky substance to which bort can adhere.
  • This catching side of the catching screens will then be turned towards the side from which the suspended diamond dust is supplied during the grinding.
  • These catching screens can be constructed as curved blades, the lower longitudinal edges of which are slightly spaced from the upper side of the grinding wheel and which, if desired, may be adjustable in such a manner that said space and/or the radial position is/are adjustable; the blades may be mounted on the catching plate and/or detached therefrom on supports.
  • an apparatus consisting of a transparent cap either covered internally with a transparent adhesive capable of retaining bort or made 2,715,306 Patented Aug. 16, 1955 of plastic or another transparent material having or capable of taking an electrostatic charge without a cover ing of adhesive, which cap can be arranged over a grinding wheel and which is provided with one or more recesses that admit of being covered; these recesses serve for the passage of the diamond holding means. They can extend in radial direction and admit of being closed by means of a removable e. g. plastic cover.
  • the cap can carry one or more catching screens or blades fixed to the inside thereof, which screens or blades when made e. g. of metal are again covered with an adhesive at the catching side and when made of plastic do not require to be covered with an adhesive.
  • Fig. 1 is a side View of this apparatus and Fig. 2 is a plan view thereof;
  • Fig. 3 is a plan view of a transparent plastic cap arranged over the grinding wheel and Fig. 4 is a vertical section on the line IVIV in Fig. 3.
  • the reference numeral 1 designates a grinding wheel mounted on a central shaft 2 and adapted to be rotated by means of said shaft.
  • the grinding wheel is intended for the grinding of four diamonds at four different places on the wheel.
  • the reference numeral 3 designates a diamond to be ground at one place, the means for holding the diamond that are known per se being not shown.
  • the grinding wheel has its periphery surrounded by an upstanding e. g. metal catch plate 4, the upper side of which slightly protrudes above the peripheral edge of the grinding wheel.
  • This catch plate mainly serves for recovering the bort applied to the grinding wheel which is hurled against the inner side of the catch plate and because this inner side is covered with a substance to which bore will adhere, the bort is thus recovered.
  • catching blades 5 e. g. of metal are mounted in four places uniformly distributed over the circumference of the grinding wheel, which blades are mainly directed radially and which are arcuate. At the concave side these blades are covered with a sticky substance to which bort will adhere.
  • the blades are mounted by means of vertical pins 6 and clips 7 which clips are secured to the outer end of the blade and which can be clamped on the pins.
  • the vertical position of the blades or in other words the spaces between the lower edge of the blades and the upper side of the grinding wheel, and the angular position of the blades can be adjusted therefore.
  • the lower edges of the blades follows the configuration of the upper side of the grinding Wheel.
  • a transparent plastic cap 8 is arranged over the grinding wheel 1 with its vertical driving shaft 2, which cap rests on a table 18.
  • the cap has a raised portion 19 comprising a central opening 20 for the shaft 2.
  • the grinding wheel is surrounded by an upstanding catch plate.
  • the cap 8 is provided with four oblong rectangular recesses 9 through which the diamond holding means can pass. Each of these recesses can be closed by means of a detachable plastic cover. These covers will then have their bevelled edges 11 hearing on correspondingly bevelled edges 12 of the recesses. At 13 and 14 the covers have been removed.
  • the numeral 15 designates a cover made e. g. of plastic which is mounted so as to be pivotable at 16.
  • the cap 8 carries plastic catching screens or blades 7, the lower side of which is located closely above the upper side of the grinding wheel .1.
  • apparatus for grinding diamonds including a horizontal grinding wheel, a catching rim surrounding said grinding wheel at its periphery and having its upper edge protruding above the adjacent upper peripheral edge of the grinding wheel, the side of the catching rim facing the center of said grinding wheel being covered with an adhesibe, bort-retaining substance, and at least one bort-catching and retaining bafiie means disposed over the upper surface of said grinding wheel, the face of said .baifie means opposed to the direction of rotation of said wheel being covered with an adhesive, bortretaining substance.
  • each bortcatching and retaining baffle means has the form of an arcuate blade having a lower longitudinal edge parallel to the upper surface of said grinding wheel.
  • apparatus for grinding diamonds including a horizontal grinding wheel, a catching rim surrounding said grinding wheel at its periphery, a transparent hood disposed over said grinding wheel and having a peripheral rim portion. resting on said catching rim, said hood being provided with at least one aperture for receiving diamondholding means, and at least one bort-catching and retaining baffle means disposed under said hood and over the upper surface of said grinding wheel and extending in a generally radial direction, the face of said baffle means opposite to the direction of rotation of the wheel and inner faces of said hood and catching rim all having bortretaining surfaces to which bort striking said surfaces adheres.
  • apparatus for grinding diamonds including a horizontal grinding wheel, a transparent hood disposed over said grinding wheel and having a downwardly extending rim portion surrounding said grinding wheel, and means for supporting the hood, said hood being provided with at least one aperture for receiving diamond-holding means, and at least one bort-catching and retaining baflie means disposed under said hood and over the upper surface of said grinding wheel and extending in a generally radial direction, the face of said bafiie means opposite to the direction of rotation of the wheel and inner faces of said hood including said rim all having bort-retaining surfaces to which bort striking said surfaces adheres.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US277126A 1952-01-11 1952-03-18 Apparatus for the recovery of diamond powder or bort Expired - Lifetime US2715306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2715306X 1952-01-11

Publications (1)

Publication Number Publication Date
US2715306A true US2715306A (en) 1955-08-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US277126A Expired - Lifetime US2715306A (en) 1952-01-11 1952-03-18 Apparatus for the recovery of diamond powder or bort

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US (1) US2715306A (en(2012))
BE (1) BE509265A (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
NL7138C (en(2012)) *
US1180413A (en) * 1914-10-23 1916-04-25 Harry Munson Sharpening-machine.
US1284109A (en) * 1916-08-10 1918-11-05 Alfred T Hunt Process of and apparatus for cutting diamonds.
US1374075A (en) * 1919-04-18 1921-04-05 David Stokely Etheridge Receptacle and separator for particles of gold and other precious metals
US1797261A (en) * 1925-12-28 1931-03-24 United Shoe Machinery Corp Dust collector
US2059039A (en) * 1934-08-10 1936-10-27 Mervin F Sandman Device for catching dust from grinding instruments
US2338807A (en) * 1942-11-30 1944-01-11 Rotor Tool Company Portable power driven tool
US2423287A (en) * 1945-06-18 1947-07-01 Eugene L Beisel Method and article for deflecting material
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
NL7138C (en(2012)) *
US1180413A (en) * 1914-10-23 1916-04-25 Harry Munson Sharpening-machine.
US1284109A (en) * 1916-08-10 1918-11-05 Alfred T Hunt Process of and apparatus for cutting diamonds.
US1374075A (en) * 1919-04-18 1921-04-05 David Stokely Etheridge Receptacle and separator for particles of gold and other precious metals
US1797261A (en) * 1925-12-28 1931-03-24 United Shoe Machinery Corp Dust collector
US2059039A (en) * 1934-08-10 1936-10-27 Mervin F Sandman Device for catching dust from grinding instruments
US2338807A (en) * 1942-11-30 1944-01-11 Rotor Tool Company Portable power driven tool
US2423287A (en) * 1945-06-18 1947-07-01 Eugene L Beisel Method and article for deflecting material
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

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Publication number Publication date
BE509265A (en(2012))

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