GB191412058A - Improvements in and relating to Gem Polishing Machines. - Google Patents
Improvements in and relating to Gem Polishing Machines.Info
- Publication number
- GB191412058A GB191412058A GB191412058DA GB191412058A GB 191412058 A GB191412058 A GB 191412058A GB 191412058D A GB191412058D A GB 191412058DA GB 191412058 A GB191412058 A GB 191412058A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dop
- gem
- arm
- lap
- pinion
- 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
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)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
12,058. Schenkein, S. M., and Lehmann, O. P. R. May 15. Gems, treating. - A machine for polishing bruted diamonds comprises a lap T on a quickly rotating shaft 17, and a table 26 mounted eccentrically to the shaft 17'and rotated slowly by a pinion 29 engaging an internal rack 27 on the table, the pinion being driven through screw gearing 36 from the shaft 17. When it is required to stop the motion of the table, the pinion may be drawn out of gear with the rack by means of a handle 35. A number of hollow standards 60 on the table 26 carry v e r t i c a l l y adjustable posts 74, upon each of which is pivoted at 85 a hollow arm 86; at the end of each arm is a clamp 92 carrying a circumferentially adjustable spindle, at the lower end of which is an arcuate guide 97 on which is mounted the dop. The dop is adjusted in the guide to determine the angle of a facet, and is also adjustable about its own axis to present various facets to the lap. The weight of the dop acting at the end of the arm 86 presses the gem on the lap, and an additional weight 89 may be used; movement of the arm as the gem wears down causes a pin 91 on the arm 86 to operate a micrometer gauge 80, and the dop may be turned on the spindle in the end of the arm 86 until the micrometer gauge moves most quickly, that is when the grain of the gem is properly presented to the lap. A second pin adjacent to the pin 91 comes up against a fixed stop when the facet is ground to the desired extent, and downward adjustment of the post 74 causes the gem to be pressed on the lap again. In order to prevent expansion of the dop and associated parts due to the heat of grinding, a continuous stream of air is passed through a bore in the dop and holder, the air being supplied from a pipe 45 through ducts 48, 51, pipe 52, and the interior of the arm 86. A retaining-hook holds the gem in the dop, and an auxiliary gem retainer holds it in position while the dop is being rotated for the presentation of a new facet to the lap. For transferring the gem from one dop to another, the two dops are placed in accurate alinement in a frame, the new dop is pressed on to the gem 'by means of a screw, and the gem is ejected from the other dop by screwing in an axial screw in the dop.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191412058T | 1914-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191412058A true GB191412058A (en) | 1915-07-15 |
Family
ID=32584315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191412058D Expired GB191412058A (en) | 1914-05-15 | 1914-05-15 | Improvements in and relating to Gem Polishing Machines. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191412058A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637861A (en) * | 2018-05-11 | 2018-10-12 | 深圳市鑫万福珠宝首饰有限公司 | A kind of jewelry processing burnishing device that can adjust height |
| CN109571195A (en) * | 2019-01-24 | 2019-04-05 | 梧州学院 | A kind of jewel circle stone machine |
-
1914
- 1914-05-15 GB GB191412058D patent/GB191412058A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637861A (en) * | 2018-05-11 | 2018-10-12 | 深圳市鑫万福珠宝首饰有限公司 | A kind of jewelry processing burnishing device that can adjust height |
| CN109571195A (en) * | 2019-01-24 | 2019-04-05 | 梧州学院 | A kind of jewel circle stone machine |
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