US2440656A - Abrasive material for polishing - Google Patents
Abrasive material for polishing Download PDFInfo
- Publication number
- US2440656A US2440656A US655041A US65504146A US2440656A US 2440656 A US2440656 A US 2440656A US 655041 A US655041 A US 655041A US 65504146 A US65504146 A US 65504146A US 2440656 A US2440656 A US 2440656A
- Authority
- US
- United States
- Prior art keywords
- parts
- polishing
- tumbling
- abrasive material
- abrasive
- 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
Links
- 238000005498 polishing Methods 0.000 title description 11
- 239000003082 abrasive agent Substances 0.000 title description 7
- 239000000463 material Substances 0.000 description 15
- 241000209094 Oryza Species 0.000 description 9
- 235000007164 Oryza sativa Nutrition 0.000 description 9
- 235000009566 rice Nutrition 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 241000758789 Juglans Species 0.000 description 3
- 235000009496 Juglans regia Nutrition 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000008262 pumice Substances 0.000 description 3
- 235000020234 walnut Nutrition 0.000 description 3
- 244000018633 Prunus armeniaca Species 0.000 description 2
- 235000009827 Prunus armeniaca Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
Images
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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
Definitions
- This invention relates to polishing materials and particularly to abrasives for use in tumbling operations where tumbling barrels are used.
- the principal object of this invention is to produce a material which may be placed in the tumbling barrel, together with the parts to be tumbled, which material will have both a cushioning effect and also an abrasive afiect.
- a further object is to produce a material which is economical to manufacture and one wherein the various ingredients to be used therein may be readily obtained.
- a further object is to provide a material which is not only speedy in its polishing action, but also one which may be readily separated from the parts upon the completion of the tumbling or polishing operation.
- a further object is to produce a material which is absorptive and, therefore, practically dustless as compared with other materials now being used.
- a further object is to produce a material which can be used with standard tumbling equipment, obviating all alterations in the same.
- Fig. 1 is a cross-sectional view of a rice hull, greatly enlarged, and taken on the line l--! of Fig. 2.
- Fig. 2 is a side elevation of a rice hull
- Fig. 3 is a cross-sectional view similar to Fig. 1, showing the manner in which the oil, dust and abrasive material accumulates on the outer surface of the rice hull during the use thereof.
- tumbling In polishing small parts it is common practice to employ the process known as tumbling. This consists of placing within a barrel a number of parts to be deburred or polished together with abrasive compound; then the barrel is rotated so that the various parts fall over each other and thereby burnish each other and effect a polishing operation for the removal of burs.
- Applicant has produced a new polishing material in which the ingredients not only perform the polishing function, but also are of such an elastic nature that when the parts fall upon each other there is produced a cushioning effect, thus preventing scratching of the parts.
- Applicants material is also of such a nature that it will scour and polish through its own abrasive effect, also acting to hold other added abrasives to assist in the polishing operation. Due to the absorptive nature of the material it is capable of gathering and holding the dust particles.
- Applicants material is also such that it does not adhere to the parts being polished and can, therefore, be easily removed by shaking or brushing the article, or by the use of air.
- the hull is hollow, as shown at 6; the opening 1 being that caused during the threshing operation at which time the grain of rice within the hull was removed.
- Rice hulls are formed with ridges, as shown at 8, which ridges are practically pure silica at the tip of each ridge; therefore representing a good abrasive characteristic.
- the fact that the hull is hollow assures adequate cushioning, for the reason that when the two halves are pressed together a spring action between the two parts of the hull results; therefore, as the parts are tumbled together, this spring action cushions the action of the parts in tumbling.
- rice hulls may be used either alone or with a mixture of one or more parts of cracked or ground-up apricot-pits, walnut shells, 0r abrasive material such'as pumice or emery and oil.
- the addition of such materials assists in the cutting operation.
- the addition of oil assists in the collection of dust and dirt, causing it to adhere to the channels 9 of the rice hulls which are somewhat absorptive and will prevent 3 the dirt and dust from reaching the parts being tumbled and fastening onto the same.
Description
p 1948.. F. 'w. HUNTINGTON I 56 ABRASIVE MATERIAL FOR I OLISHII IG Filed March 18, 1946 Fig 2' INVENTOR; Fred W. Huntington Patented Apr. 27, 1948 UNITED STATES Artur tries This invention relates to polishing materials and particularly to abrasives for use in tumbling operations where tumbling barrels are used.
The principal object of this invention is to produce a material which may be placed in the tumbling barrel, together with the parts to be tumbled, which material will have both a cushioning effect and also an abrasive afiect.
A further object is to produce a material which is economical to manufacture and one wherein the various ingredients to be used therein may be readily obtained.
A further object is to provide a material which is not only speedy in its polishing action, but also one which may be readily separated from the parts upon the completion of the tumbling or polishing operation.
A further object is to produce a material which is absorptive and, therefore, practically dustless as compared with other materials now being used.
A further object is to produce a material which can be used with standard tumbling equipment, obviating all alterations in the same.
Other objects and advantages will be apparent during the course of the following description.
In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,
Fig. 1 is a cross-sectional view of a rice hull, greatly enlarged, and taken on the line l--! of Fig. 2.
Fig. 2 is a side elevation of a rice hull, and
Fig. 3 is a cross-sectional view similar to Fig. 1, showing the manner in which the oil, dust and abrasive material accumulates on the outer surface of the rice hull during the use thereof.
In polishing small parts it is common practice to employ the process known as tumbling. This consists of placing within a barrel a number of parts to be deburred or polished together with abrasive compound; then the barrel is rotated so that the various parts fall over each other and thereby burnish each other and effect a polishing operation for the removal of burs.
It also has been common practice to place the parts in a barrel and merely tumble them. This has proved to be objectionable inasmuch as the parts are apt to become scratched in the tumbling operation and the scratches will not polish out; also, considerable breakage is liable to occur. In some cases an abrasive material is placed in the barrel in order to speed up polishing action, thus 1 Claim. (01. 51464.5)
causing dust to form and hence the parts had to be cleaned after the tumbling process.
Up to the present time the different materials have been very expensive; therefore, applicant has endeavored to produce an agent which will be most economical to buy and use; also one, containing ingredients readily procured.
Applicant has produced a new polishing material in which the ingredients not only perform the polishing function, but also are of such an elastic nature that when the parts fall upon each other there is produced a cushioning effect, thus preventing scratching of the parts.
Applicants material is also of such a nature that it will scour and polish through its own abrasive effect, also acting to hold other added abrasives to assist in the polishing operation. Due to the absorptive nature of the material it is capable of gathering and holding the dust particles.
Applicants material is also such that it does not adhere to the parts being polished and can, therefore, be easily removed by shaking or brushing the article, or by the use of air.
In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a rice hull as a whole.
By viewing Figs. 1 and 3, it will be noted that the hull is hollow, as shown at 6; the opening 1 being that caused during the threshing operation at which time the grain of rice within the hull was removed.
Rice hulls are formed with ridges, as shown at 8, which ridges are practically pure silica at the tip of each ridge; therefore representing a good abrasive characteristic. The fact that the hull is hollow assures adequate cushioning, for the reason that when the two halves are pressed together a spring action between the two parts of the hull results; therefore, as the parts are tumbled together, this spring action cushions the action of the parts in tumbling.
In Fig. 3 it will be noted that the space between the ridges 8 forms a channel in which dirt and dust can accumulate, as shown at 9 and will be later described.
By using my polishing material rice hulls may be used either alone or with a mixture of one or more parts of cracked or ground-up apricot-pits, walnut shells, 0r abrasive material such'as pumice or emery and oil. The addition of such materials assists in the cutting operation. The addition of oil assists in the collection of dust and dirt, causing it to adhere to the channels 9 of the rice hulls which are somewhat absorptive and will prevent 3 the dirt and dust from reaching the parts being tumbled and fastening onto the same.
A typical mixture to be used for the tumbling of brass, bronze, copper, die-cast and plastics, is shown herewith:
Rice hul1s cubic feet 2 Crushed walnut she1ls do- $4,, Crushed apricot pits do $41 Powdered pumice (150 mesh) quarts 2 Light nil o-.."
one-fourth A1) cubic foot of crushed walnut shells, one-fourth cubic foot of crushed apricot pits, to which is added two (2) quarts of powdered pumice and one (1) quart of light oil, all mixed to form a homogeneous mass.
FRED W. HUNTINGTON.
REFERENCE S CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,887,026 Lach Nov. 8, 1932 2,185,262 Lupo, Jr Jan. 2, 1940 FOREIGN PATENTS Number Country Date 1,393 Great Britain Jan. 2'7, 1890
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US655041A US2440656A (en) | 1946-03-18 | 1946-03-18 | Abrasive material for polishing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US655041A US2440656A (en) | 1946-03-18 | 1946-03-18 | Abrasive material for polishing |
Publications (1)
Publication Number | Publication Date |
---|---|
US2440656A true US2440656A (en) | 1948-04-27 |
Family
ID=24627249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US655041A Expired - Lifetime US2440656A (en) | 1946-03-18 | 1946-03-18 | Abrasive material for polishing |
Country Status (1)
Country | Link |
---|---|
US (1) | US2440656A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2545291A (en) * | 1948-10-28 | 1951-03-13 | Lupo Joseph | Polishing compound and carrier therefor |
US5140783A (en) * | 1990-06-26 | 1992-08-25 | Hoffman Steve E | Method for surface finishing of articles |
US5447465A (en) * | 1993-08-19 | 1995-09-05 | United States Surgical Corporation | Method of treating needle blanks |
US5507685A (en) * | 1993-08-25 | 1996-04-16 | Hoffman; Steve E. | Method for surface finishing of difficult polish surfaces |
US6206755B1 (en) | 1994-10-19 | 2001-03-27 | United States Surgical Corporation | Method and apparatus for making blunt needles |
US20080141484A1 (en) * | 2006-12-15 | 2008-06-19 | Tatsuya Satoh | Cleaning medium and dry cleaning apparatus using the same |
CN101349887B (en) * | 2006-12-15 | 2011-01-19 | 株式会社理光 | Cleaning medium and dry cleaning apparatus using the same |
US20110297775A1 (en) * | 2009-02-19 | 2011-12-08 | Assarel-Medet Ad | Grinding media |
CN101254502B (en) * | 2006-09-06 | 2012-10-10 | 株式会社理光 | Dry cleaning device and dry cleaning method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1887026A (en) * | 1930-02-11 | 1932-11-08 | Du Pont Viscoloid Co | Polishing |
US2185262A (en) * | 1938-04-09 | 1940-01-02 | Jr Joseph Lupo | Compound for and process of surface finishing metallic articles |
-
1946
- 1946-03-18 US US655041A patent/US2440656A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1887026A (en) * | 1930-02-11 | 1932-11-08 | Du Pont Viscoloid Co | Polishing |
US2185262A (en) * | 1938-04-09 | 1940-01-02 | Jr Joseph Lupo | Compound for and process of surface finishing metallic articles |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2545291A (en) * | 1948-10-28 | 1951-03-13 | Lupo Joseph | Polishing compound and carrier therefor |
US5140783A (en) * | 1990-06-26 | 1992-08-25 | Hoffman Steve E | Method for surface finishing of articles |
US5447465A (en) * | 1993-08-19 | 1995-09-05 | United States Surgical Corporation | Method of treating needle blanks |
US5507685A (en) * | 1993-08-25 | 1996-04-16 | Hoffman; Steve E. | Method for surface finishing of difficult polish surfaces |
US6206755B1 (en) | 1994-10-19 | 2001-03-27 | United States Surgical Corporation | Method and apparatus for making blunt needles |
CN101254502B (en) * | 2006-09-06 | 2012-10-10 | 株式会社理光 | Dry cleaning device and dry cleaning method |
US20080141484A1 (en) * | 2006-12-15 | 2008-06-19 | Tatsuya Satoh | Cleaning medium and dry cleaning apparatus using the same |
US7854648B2 (en) * | 2006-12-15 | 2010-12-21 | Ricoh Company, Ltd. | Cleaning medium and dry cleaning apparatus using the same |
CN101349887B (en) * | 2006-12-15 | 2011-01-19 | 株式会社理光 | Cleaning medium and dry cleaning apparatus using the same |
KR101025180B1 (en) * | 2006-12-15 | 2011-03-31 | 가부시키가이샤 리코 | Cleaning medium and dry cleaning apparatus using the same |
US20110297775A1 (en) * | 2009-02-19 | 2011-12-08 | Assarel-Medet Ad | Grinding media |
US8746602B2 (en) * | 2009-02-19 | 2014-06-10 | Assarel-Medet Ad | Grinding media |
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