ES349078A1 - Apparatus to control gravitational movement of a gem stone polishing tang towards a stone polishing surface - Google Patents

Apparatus to control gravitational movement of a gem stone polishing tang towards a stone polishing surface

Info

Publication number
ES349078A1
ES349078A1 ES349078A ES349078A ES349078A1 ES 349078 A1 ES349078 A1 ES 349078A1 ES 349078 A ES349078 A ES 349078A ES 349078 A ES349078 A ES 349078A ES 349078 A1 ES349078 A1 ES 349078A1
Authority
ES
Spain
Prior art keywords
arm
dashpot
tube
gem
plunger
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
Application number
ES349078A
Other languages
Spanish (es)
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.)
Spectrum Diamonds Pty Ltd
Original Assignee
Spectrum Diamonds Pty Ltd
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 Spectrum Diamonds Pty Ltd filed Critical Spectrum Diamonds Pty Ltd
Publication of ES349078A1 publication Critical patent/ES349078A1/en
Expired legal-status Critical Current

Links

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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/16—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

A dashpot 6 for controlling the gravitational movement of, for example, an arm 1 in a gem polishing machine is connected by a flexible tube 7 to an upstanding tube 8 which is movable vertically to adjust the position of balance of the dashpot plunger 5. The tube 8 is raised or lowered by a motor 9 controlled by movements of the arm. When the arm is lowered, a follower 4 on the arm engages the plunger 5 before the gem held by a dop or chuck 2 engages a polishing wheel 3. The weight of the arm gradually depresses the plunger as the gem is polished. If the arm is light or counter-weighted, its pressure on the plunger may be insufficient to move it sufficiently from its initial balanced position this difficulty is overcome by the automatic lowering of the tube 8 so that liquid (e.g. mercury) flows out of the dashpot. After polishing, the arm is lifted off the wheel and dashpot, the tube being quickly restored to its original position causing liquid to flow back into the dashpot. A restriction valve 12 in the tube permits the liquid to flow more rapidly into, than out of, the dashpot.
ES349078A 1966-12-20 1967-12-19 Apparatus to control gravitational movement of a gem stone polishing tang towards a stone polishing surface Expired ES349078A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56977/66A GB1209147A (en) 1966-12-20 1966-12-20 Improvements in dashpot control apparatus

Publications (1)

Publication Number Publication Date
ES349078A1 true ES349078A1 (en) 1969-04-01

Family

ID=10478027

Family Applications (1)

Application Number Title Priority Date Filing Date
ES349078A Expired ES349078A1 (en) 1966-12-20 1967-12-19 Apparatus to control gravitational movement of a gem stone polishing tang towards a stone polishing surface

Country Status (8)

Country Link
US (1) US3543447A (en)
BE (1) BE708307A (en)
DE (1) DE1652185B1 (en)
ES (1) ES349078A1 (en)
FR (1) FR1548979A (en)
GB (1) GB1209147A (en)
IL (1) IL29139A (en)
NL (1) NL148524B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902275A (en) * 1972-12-18 1975-09-02 American Optical Corp Knife sharpener
DE2519172C3 (en) * 1975-04-30 1980-01-31 Ted Bildplatten Ag Aeg-Telefunken- Teldec, Zug (Schweiz) Optical disk player with a polishing device for the scanner
DE2531135B2 (en) * 1975-07-11 1979-07-05 Sanyo Electric Co., Ltd., Moriguchi, Osaka (Japan) Method and device for regrinding the stylus of video disc players
AU2004225982B2 (en) * 2003-03-27 2007-06-07 Swf Companies, Inc. High-speed continuous action form-fill-seal apparatus
CN111843700B (en) * 2020-06-30 2022-05-31 宁波博莱特光电科技股份有限公司 Automatic production device for ceramic ferrules

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE520607A (en) *
US2395952A (en) * 1945-03-03 1946-03-05 Bartnovsky Leopold Diamond holder or dop for holding diamonds
US2446901A (en) * 1945-08-31 1948-08-10 Western Electric Co Article feeding apparatus
DE812159C (en) * 1948-10-02 1951-08-27 Karl Hermann Jaeger Chuck for diamonds to be ground
CH279422A (en) * 1950-04-03 1951-11-30 Surbeck Eduard Valve.
FR1084675A (en) * 1953-06-09 1955-01-21 Improvement in the installation of telescopic hydraulic shock absorbers
DE950251C (en) * 1954-02-06 1956-10-04 Otto Doelling Floating ball valve to interrupt the suction on vacuum lines in milking machine systems
US2932316A (en) * 1957-07-01 1960-04-12 Austin N Stanton Valves
DE1261421B (en) * 1963-04-22 1968-02-15 Dampex Corp Proprietary Ltd Device for displaying and limiting the grinding depth and the removal on a gemstone grinding machine

Also Published As

Publication number Publication date
FR1548979A (en) 1968-12-06
NL148524B (en) 1976-02-16
US3543447A (en) 1970-12-01
IL29139A (en) 1971-02-25
GB1209147A (en) 1970-10-21
BE708307A (en) 1968-05-02
DE1652185B1 (en) 1972-05-31
NL6717194A (en) 1968-06-21

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