US3543450A - Apparatus for controlling reciprocatory movement of a gem stone across a polishing surface - Google Patents

Apparatus for controlling reciprocatory movement of a gem stone across a polishing surface Download PDF

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Publication number
US3543450A
US3543450A US691617A US3543450DA US3543450A US 3543450 A US3543450 A US 3543450A US 691617 A US691617 A US 691617A US 3543450D A US3543450D A US 3543450DA US 3543450 A US3543450 A US 3543450A
Authority
US
United States
Prior art keywords
tang
controlling
dashpot
gem stone
polishing surface
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
US691617A
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English (en)
Inventor
Alec Leibowitz
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
Application granted granted Critical
Publication of US3543450A publication Critical patent/US3543450A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only

Definitions

  • a gem stone polishing machine has a tang pivoted at its rear about a horizontal axis, means for reciprocating the tang lengthwise across a polishing surface and a system for accurately aligning the plane of reciprocation of the tang with the plane of the polishing surface in which a follower depends from the tang and is United States Patent 0 adapted to reciprocate over a guide surface whose inclination can be adjusted.
  • apparatus for controlling reciprocatory movements of a gem stone across a polishing surface comprises a tang having means at its forward end for mounting a gem stone at its forward end, a tang, supporting surface, means mounting the tang on the supporting surface for pivotal movement towards and away from the polishing surface and for reciprocatory movement whereby, gem mounted at the forward end of the tang can be reciprocated across the polishing surface, a dashpot assembly, and a follower member on the tang adapted to contact and reciprocate across the dashpot assembly when the tang is reciprocated to control the contact pressure between the gem stone and the polishing surface, the improvement comprising means being provided for adjusting the inclination of the dashpot assembly in the direction of reciprocation of the tang independently of the inclination of the supporting surface for controlling the plane of reciprocation of the gem stone.
  • apparatus for polishing a diamond on a horizontal rotating wheel surface 1 comprises a generally horizontally extending tang 2 provided with a gem mounting chuck 3 at its forward end adapted to overlie the wheel, and the tang is mounted at its rear end on a horizontal fulcrum 4 so that the chuck can be pivoted towards and away from the wheel surface.
  • the base of the fulcrum is mounted on a silding carm 3,543,450 1C6 Patented Dec. 1, 197
  • the tang carries a depending follower 6, the lower end of which rests on the top surface of a dashpot plunger 7.
  • the dashpot serving to cushion downward movement of the tang onto the wheel surface, and the top plunger surface also serves as a levelling guide for the tang with the dashpot creating a backpressure on the tang during polishing.
  • the dashpot body is mounted on a horizontal fulcrum 8 parallel with the tang fulcrum 4 so that the inclination of the plunger surface can be adjusted in the direction of the lengthwise reciprocation of the tang.
  • the dashpot can be fixed at the required inclination by a pair of adjusting screws 9 acting on opposite sides of a plate 10 attached to the dashpot body.
  • An apparatus for controlling the reciprocatory movements of a gem stone across a polishing surface comprising a tang, means at the forward end of the tang for mounting a gem stone, a tang supporting surface, means mounting the tang on the supporting surface for pivotal movement towards and away from the polishing surface and for reciprocatory movement whereby a gem stone mounted at the forward end of the tang can be reciprocated across the polishing surface, a dashpot assembly, and a follower member on the tang adapted to contact and reciprocate across the dashpot assembly when the tang is reciprocated for controlling the contact pressure between the gem stone and the polishing surface, the improvement including means being provided for adjusting the inclination of the dashpot assembly in the direction of reciprocation of the tang independently of the inclination of the supporting surface for controlling the plane of reciprocation of the gem stone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US691617A 1966-12-20 1967-12-18 Apparatus for controlling reciprocatory movement of a gem stone across a polishing surface Expired - Lifetime US3543450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56976/66A GB1207490A (en) 1966-12-20 1966-12-20 Improvements relating to polishing gem stones

Publications (1)

Publication Number Publication Date
US3543450A true US3543450A (en) 1970-12-01

Family

ID=10478025

Family Applications (1)

Application Number Title Priority Date Filing Date
US691617A Expired - Lifetime US3543450A (en) 1966-12-20 1967-12-18 Apparatus for controlling reciprocatory movement of a gem stone across a polishing surface

Country Status (8)

Country Link
US (1) US3543450A (fr)
BE (1) BE708306A (fr)
DE (1) DE1652186A1 (fr)
ES (1) ES349074A1 (fr)
FR (1) FR1548980A (fr)
GB (1) GB1207490A (fr)
IL (1) IL29138A (fr)
NL (1) NL153115B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863395A (en) * 1974-02-19 1975-02-04 Shugart Associates Inc Apparatus for polishing a spherical surface on a magnetic recording transducer
US6074285A (en) * 1998-08-06 2000-06-13 National Science Council Reciprocating friction drive-type ultra precision machine
CN109571195A (zh) * 2019-01-24 2019-04-05 梧州学院 一种宝石圈石机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580541B1 (fr) * 1985-04-19 1989-09-01 Aich Rene Taille du diamant permettant un sertissage invisible

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559628A (fr) *
US2569592A (en) * 1947-11-04 1951-10-02 Henry Oliver Apparatus for polishing precious stones

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559628A (fr) *
US2569592A (en) * 1947-11-04 1951-10-02 Henry Oliver Apparatus for polishing precious stones

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863395A (en) * 1974-02-19 1975-02-04 Shugart Associates Inc Apparatus for polishing a spherical surface on a magnetic recording transducer
US6074285A (en) * 1998-08-06 2000-06-13 National Science Council Reciprocating friction drive-type ultra precision machine
CN109571195A (zh) * 2019-01-24 2019-04-05 梧州学院 一种宝石圈石机

Also Published As

Publication number Publication date
BE708306A (fr) 1968-05-02
ES349074A1 (es) 1969-04-16
NL153115B (nl) 1977-05-16
FR1548980A (fr) 1968-12-06
DE1652186A1 (de) 1970-01-08
IL29138A (en) 1970-11-30
GB1207490A (en) 1970-10-07
NL6717193A (fr) 1968-06-21

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