EP0213166A1 - Cleaving machine - Google Patents
Cleaving machineInfo
- Publication number
- EP0213166A1 EP0213166A1 EP19860901523 EP86901523A EP0213166A1 EP 0213166 A1 EP0213166 A1 EP 0213166A1 EP 19860901523 EP19860901523 EP 19860901523 EP 86901523 A EP86901523 A EP 86901523A EP 0213166 A1 EP0213166 A1 EP 0213166A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stone
- diamond
- cleaved
- piece
- holder
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/04—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by tools other than rotary type, e.g. reciprocating tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0058—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material
Definitions
- a mechanical device and process for grooving and cleaving all hard and brittle materials with cleaving grains such as sapphires, diamonds quartz etcetera.
- the invention relates to the diamond and precious stones processing and cleaving fields and the cleaving of all other similar hard and brittle materials.
- the background art for cleaving diamonds and precious stones is for the stones for example a rough diamond, which is to be cleaved to be a) Marked with ink at the point to be cleaved along the cleaving grain. b) Pasted with cement exposing the point to be cleaved and fixed onto a copper or metal holder.
- a second stone or a piece of diamond with a sharp point is then pasted with cement and mounted onto a hand held stick or a stick mounted on a movable point.
- the Diamond or stone to be cleaved is then held in a position and the second diamond or stone mounted on the stick is positioned over the cleaving point marked on the first stone. This is then rubbed vigorously by hand against the first stone until a groove is cut in the diamond or stone to be cleaved at the market point.
- a thin blade is inserted into the groove and hammered sharply causing the diamond or stone to crack along the cleaving grain.
- the invention is a mechanical device depicted in the drawing which consists of (1) a copper or metal holder which can be adjusted vertically and horizontally and is pushed forward by (2) a spring loaded device and (3) a second claw holder with adjustable claws which moves rapidly up and down at variable speed driven by an electric or any other motor or by a foot pedal and (h) belt drive, through a rotating shaft fixed to a camshaft.
- the diamond or stone to be cleaved is a) Marked with ink at the point to be cleaved along the cleaving grain b) Pasted with cement or mechanically fixed to the copper or metal holder, exposing the point to be cleaved.
- a second stone or diamond with a pyramid shape and a sharp edge is fixed in the adjustable claws of the. second clawholder.
- the first holder is then adjusted vertically or horizontally until the point to be cleaved marked on the first stone or diamond touches the sharp edge of the second diamond which is fixed to the claw holder.
- the second claw holder is then driven in a rapid up and down motion with a very short stroke.
- the groove can be made in the exact position marked for cleaving because the two diamonds can be adjusted till they touch at the correct position.
- a sharp edge on this mechanical device can be used to make grooves on many diamonds or stones as against which a number of sharp points can be used to make a groove on just a few diamoncfeor stones in the normal hand held method.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adornments (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
L'invention concerne essentiellement le domaine de l'entaillage et du clivage de pierres précieuses et de diamants et de tous autres types de matériaux durs et/ou cassants. Le problème technique est que lors de la réalisation d'une entaille dans la pierre ou le diamant ou tout autre morceau de matériau à cliver à l'aide des procédés manuels actuels ou d'autres procédés en usage, il est extrêmement difficile et fastidieux d'entailler au bon endroit, et, de surcroît, d'effectuer une entaille fine et étroite. La présente invention résout ce problème par le montage de la première pierre ou diamant ou morceau de matériau à entailler et à cliver sur un support à griffes ou un autre type de support fixé sur un dispositif réglable. La seconde pierre ou diamant ou morceau de matériau est montée sur un second support avec un taillant fin qui dépasse. Ce taillant fin est ensuite déplacé et réglé pour venir en contact avec la première pierre exactement au point d'entaillage et de clivage. Ainsi l'entaille est réalisée uniquement à l'endroit désiré et l'emploi d'un taillant fin (courant sur les pierres ou diamants sciés) permet d'obtenir une entaille étroite et un clivage de haute qualité. Grâce à cette invention, le rendement des opérations de clivage de pierres ou de diamants est accru.The invention relates essentially to the field of notching and cleavage of precious stones and diamonds and of all other types of hard and / or brittle materials. The technical problem is that when making a cut in stone or diamond or any other piece of material to be cleaved using current manual methods or other methods in use, it is extremely difficult and tedious to '' notch in the right place, and, in addition, make a fine and narrow notch. The present invention solves this problem by mounting the first stone or diamond or piece of material to be cut and cleaved on a claw support or another type of support fixed on an adjustable device. The second stone or diamond or piece of material is mounted on a second support with a thin cutting edge that protrudes. This fine cutter is then moved and adjusted to come into contact with the first stone exactly at the point of notching and cleavage. Thus the notch is made only at the desired location and the use of a fine cutter (common on sawn stones or diamonds) allows to obtain a narrow notch and a high quality cleavage. Thanks to this invention, the efficiency of the cleavage operations of stones or diamonds is increased.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LK9497 | 1985-03-11 | ||
LK949785 | 1985-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0213166A1 true EP0213166A1 (en) | 1987-03-11 |
Family
ID=19720950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860901523 Withdrawn EP0213166A1 (en) | 1985-03-11 | 1986-03-11 | Cleaving machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0213166A1 (en) |
WO (1) | WO1986005435A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8912050D0 (en) * | 1989-05-25 | 1989-07-12 | Biron Marcel | A method of,and apparatus for cleaving gemstones |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2716403A (en) * | 1952-10-11 | 1955-08-30 | Moser Ernest | Machine for machining jewels |
US3266476A (en) * | 1964-02-17 | 1966-08-16 | Swaab Jack | Machine for cutting precious stones |
GB2074910B (en) * | 1980-04-23 | 1983-04-20 | Gersan Etab | Working gemstones |
-
1986
- 1986-03-11 EP EP19860901523 patent/EP0213166A1/en not_active Withdrawn
- 1986-03-11 WO PCT/LK1986/000001 patent/WO1986005435A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8605435A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1986005435A1 (en) | 1986-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19861223 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE GB |
|
R17P | Request for examination filed (corrected) |
Effective date: 19861223 |
|
17Q | First examination report despatched |
Effective date: 19880419 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19880830 |