US2320569A - Treatment of worn abrasive belts - Google Patents
Treatment of worn abrasive belts Download PDFInfo
- Publication number
- US2320569A US2320569A US271619A US27161939A US2320569A US 2320569 A US2320569 A US 2320569A US 271619 A US271619 A US 271619A US 27161939 A US27161939 A US 27161939A US 2320569 A US2320569 A US 2320569A
- Authority
- US
- United States
- Prior art keywords
- abrasive
- belt
- treatment
- worn
- abrasive belts
- 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
- 239000003292 glue Substances 0.000 description 7
- 239000006061 abrasive grain Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005108 dry cleaning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/10—Devices or means for dressing or conditioning abrasive surfaces of travelling flexible backings coated with abrasives; Cleaning of abrasive belts
Definitions
- the present invention relates to a treatment of worn abrasive belts and has its particular field of application in a method of renewing the usefulness of emery cloth, glass paper and sand paper belts for wood and metals.
- the invention will be described in its application to a method of renewing the usefulness of Worn abrasive belts in which the abrasive has been bonded to the backing member by glue or similar material.
- the abrasive belt is placed upon pulleys, made to move about them in a closed chamber, cleaned in dry state and subsequently subjected to the action of moist heat to melt the glue bond.
- the grit bearing surface of the abrasive belt moving about the pulleys is then subjected to the action of a second brush and. While the glue bond is in a softened condition, the loose Worn abrasive on the belt is relocated to expose new sharp cutting faces on the abrasive grains.
- Fig. 1 is a side elevation of a mechanism for treating abrasive belts
- Fig. 2 is a sectional top view of this mechanism
- Fig. 3 is a view in top elevation of some component details
- Fig. 4 is a view in side elevation of another detail.
- the worn abrasive belt is placed in a chamber closable by cover 'l with hinge 'Ia upon the fixed pulleys 2 and 3 and the longitudinally adjustable pulley 4.
- 'I'he pulley 2 is driven by a motor I5 to move the belt about the pulleys and between the heating members 5 and 6 closed by a wall opposite to cover 1.
- the abrasive belt is subjected to a preliminary dry cleaning by the aid of the rotary brush l and then to the action of moist heat produced by a clean or glue water spray entering the heated chamber through the nozzle 8 at the opening 9 of the pulley 3.
- the opening 9 is subsequently closed by the partially hooded rotary brush IIJ with peep hole I3a so that the abrasive belt runs in the closed and heated chamber I3.
- a further supply of steam is admitted through the valve I I, and a gauge I2 indicates the moist heat which may be regulated to suit prevailing conditions.
- the rotary brush I Il generally consists of galvanized steel wires 0.2 mm. thick and 20 mm. long which are reenforced by interwoven wires.
- the rotary brush I0 is made to contact with the abrasive belt by means the lever I 4.
- the grit bearing surface of the abrasive belt will then be subjected tothe action of this rotary brush I0 while the belt is moving about the pulleys to relocate the loose and worn abrasive thereby exposing new sharp cutting faces on the abrasive grains.
- the abrasive belt will then be cooled and dried to recement the relocated abrasive grains thereon.
- the steps comprising placing said belt upon pulleys in a closable heated chamber, subjecting said belt to a preliminary dry cleaning by a rotary brush and then to the action of moist heat to melt the glue bond.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
June E, 943. n H, CQNRADY 2,320,569
TREATMENT OF WORN ABRASIVE BELTS Filed May 3, 19159 Patented June 1, 1,943l
TREATMENT' OF WORN ABRASIVE BELTS Hans Conrady, Kelkheim in Taunus, Germany; vested in the Alien Property Custodian Application May s, 1939, serial No. 271,619 In Germany May 2, 1938 1 Claim.
The present invention relates to a treatment of worn abrasive belts and has its particular field of application in a method of renewing the usefulness of emery cloth, glass paper and sand paper belts for wood and metals.
Although not restricted thereto, the invention will be described in its application to a method of renewing the usefulness of Worn abrasive belts in which the abrasive has been bonded to the backing member by glue or similar material. In this treatment the abrasive belt is placed upon pulleys, made to move about them in a closed chamber, cleaned in dry state and subsequently subjected to the action of moist heat to melt the glue bond. The grit bearing surface of the abrasive belt moving about the pulleys is then subjected to the action of a second brush and. While the glue bond is in a softened condition, the loose Worn abrasive on the belt is relocated to expose new sharp cutting faces on the abrasive grains.
In the accompanying drawing,
Fig. 1 is a side elevation of a mechanism for treating abrasive belts,
Fig. 2 is a sectional top view of this mechanism,
Fig. 3 is a view in top elevation of some component details, and
Fig. 4 is a view in side elevation of another detail.
Referring tc the drawing, the worn abrasive belt is placed in a chamber closable by cover 'l with hinge 'Ia upon the fixed pulleys 2 and 3 and the longitudinally adjustable pulley 4. 'I'he pulley 2 is driven by a motor I5 to move the belt about the pulleys and between the heating members 5 and 6 closed by a wall opposite to cover 1. The abrasive belt is subjected to a preliminary dry cleaning by the aid of the rotary brush l and then to the action of moist heat produced by a clean or glue water spray entering the heated chamber through the nozzle 8 at the opening 9 of the pulley 3. The opening 9 is subsequently closed by the partially hooded rotary brush IIJ with peep hole I3a so that the abrasive belt runs in the closed and heated chamber I3. A further supply of steam is admitted through the valve I I, and a gauge I2 indicates the moist heat which may be regulated to suit prevailing conditions. The rotary brush I Il generally consists of galvanized steel wires 0.2 mm. thick and 20 mm. long which are reenforced by interwoven wires.
As soon as temperature and moisture condition will have sufficiently softened the glue bond, the rotary brush I0 is made to contact with the abrasive belt by means the lever I 4. The grit bearing surface of the abrasive belt will then be subjected tothe action of this rotary brush I0 while the belt is moving about the pulleys to relocate the loose and worn abrasive thereby exposing new sharp cutting faces on the abrasive grains. The abrasive belt will then be cooled and dried to recement the relocated abrasive grains thereon.
Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:
In the method of renewing the usefulness of worn abrasive belts in which the abrasive has been bonded to the backing member by glue or other similar material, the steps comprising placing said belt upon pulleys in a closable heated chamber, subjecting said belt to a preliminary dry cleaning by a rotary brush and then to the action of moist heat to melt the glue bond. causing the belt to move about said pulleys, subjecting the grit bearing face of said belt to the action of a second rotary brush while the belt is moving about said pulleys and while said bond is in a softened condition to relocate the Worn abrasive on said belt thereby exposing new sharp cutting faces on the abrasive grains and subsequently cooling and drying said belt to recement the relocated abrasive grains thereon.
HANS CONRADY.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2320569X | 1938-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2320569A true US2320569A (en) | 1943-06-01 |
Family
ID=7994668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US271619A Expired - Lifetime US2320569A (en) | 1938-05-02 | 1939-05-03 | Treatment of worn abrasive belts |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2320569A (en) |
| BE (1) | BE435863A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2568096A (en) * | 1948-02-07 | 1951-09-18 | Abrasive Products Inc | Abrading operation and apparatus useful therein |
| DE1037308B (en) * | 1957-01-11 | 1958-08-21 | Buetfering Maschfab Geb | Device for cleaning sanding belts |
| US3436874A (en) * | 1965-09-06 | 1969-04-08 | Weinig Michael Kg | Method of grinding profiles |
-
0
- BE BE435863D patent/BE435863A/xx unknown
-
1939
- 1939-05-03 US US271619A patent/US2320569A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2568096A (en) * | 1948-02-07 | 1951-09-18 | Abrasive Products Inc | Abrading operation and apparatus useful therein |
| DE1037308B (en) * | 1957-01-11 | 1958-08-21 | Buetfering Maschfab Geb | Device for cleaning sanding belts |
| US3436874A (en) * | 1965-09-06 | 1969-04-08 | Weinig Michael Kg | Method of grinding profiles |
Also Published As
| Publication number | Publication date |
|---|---|
| BE435863A (en) |
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