US1193295A - perkins - Google Patents
perkins Download PDFInfo
- Publication number
- US1193295A US1193295A US1193295DA US1193295A US 1193295 A US1193295 A US 1193295A US 1193295D A US1193295D A US 1193295DA US 1193295 A US1193295 A US 1193295A
- Authority
- US
- United States
- Prior art keywords
- cutter head
- grinder
- carriage
- knives
- shaft
- 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
- 210000002832 Shoulder Anatomy 0.000 description 10
- 230000000875 corresponding Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/42—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades helically bent, e.g. for lawn mowers
Definitions
- the object of my invention is to produce a simpleapparatus for securing this result, also to provide means by which the bevel of all the knives of the cutter head may be similarly changed if desired, and further to produce an apparatus which can be applied to the machine of which the cutter head forms a part without removing the cutter head or the knives. Further to produce a machine of this character which will do the work with accuracy and despatch.
- FIG. 1 is a side elevation of the apparatus embodying my invention, the same being shown as applied to a cutter head, the latter appearing in diagram only, and Fig. 2 is a broken plan view of the apparatus shown in Fig. 1.
- the cutter head 10 has tangential knives 11 and essentially radial shoulders 12-which afford backings for the knife supports.
- the knives project slightly from the face ofthe cutter head and operate as already stated.
- the machine of which the cutter head is a part has also parallel shafts 13 and 14 just above and adjacent to the center head. These serve as supports for the carriage 15 which can be moved back and forth opposite the cutter head sliding on the shafts 13 and 11.
- the carriage carries a motor 16 which by means of a belt 1'? drives the grinder 18 adapted to grind and sharpen the knives 11. I do not refer to the driving means of the grinder in detail because any suitable scheme can be used for driving the grinder, although a belt is preferable because it is more flexible and better adapted to permit of variations in the position of the grinder, as will presently appear.
- the belt 17 is provided with a tightener having a pulley 19 which presses on one member of the belt, and. the pulley is sup ported on a tilting bracket 20 which is pivoted to the carriage as shown at 21, provided with a slot 22, and with a bolt 23 which projects through the slot and into the carriage so that the position of the tightener bracket 20 can be fixed.
- the carriage On one side the carriage has. a projecting arm 24 through which extends a vertically arranged gage screw 25 having preferably a milled head and a foot 26 which rides on the shaft 13. The position of the screw-fixes the height of the grinder with relation to the knives 11.
- an index finger 27 Extending through the shaft 13 in a line oblique to the horizontal, is an index finger 27 which at its inner end is adapted to abut with the several shoulders 12 of the cutter head, and the position of the index finger is fixed by means of a set screw 28.
- a collar 29 is placed on the outer end portion of the finger and fastened by a Set screw 30, this collar being set up against the shaft 13 so that the operation of the grinder wheel 18 on one knife can be duplicated on the several knives, aswill presently appear.
- grinder wheel 18 is constantly rotating, and that by pushing the carriage 15 along the shafts 13 and 14, the knives 11 will be accurately ground. It will be further understood that any suitable grinding wheel can be used, and that any preferred form of driving mechanism can be employed in connection with the grinder.
- a grinder of the kind described comprising a'sliding and tilting carriage adapted to be positioned above the cutter head, a rotary grinding wheel on the carriage, a shaft adjacent one side of the carriage and parallel with the axis of the cutter head to the carriage and riding on the shaft, an index finger extending through the shaft to engage the work being operated on, and a grinding wheel on the carriage.
- 'A grinder for rotary cutter heads comprising a pair of parallel shafts positioned above the cutter head to be ground, a carriage having a seat-on one shaft which permits it to slide and tilt on said shaft, a screw v the travel of the carriage, means riding on HIRAM A. PERKINS.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
H. A. PERKINS. CUTTER HEAD GRINDER.
APPLICATION FILED APR. 20. I916.
Patented Aug. 1, 1916. v
2 SHEETS-SHEET I.
. H. A. PERKINS.
CUTTER HEAD GRINDER.
APPLICATION FILED APR. 20. 1916.
2 SHEETS-SHEET 2.
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HIRAM A. PERKINS, OF ROCHESTER, NEW YORK, ASSIGNOR TO AMERICAN SPLINT 1 CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.
CUTTER-HEAD GRINDER.
Specification of Letters Patent.
Patented Aug. 1, 1916.
Application filed April 20, 1916. Serial No. 92,437.
of this class the knives in order to work suclutely necessary to have each individual knife ground to the same bevel as the others,
and to have the knives project exactly the same distance from the cutter head sov that they shall all bear the same relation to the anvil over which the stock passes.
The object of my invention is to produce a simpleapparatus for securing this result, also to provide means by which the bevel of all the knives of the cutter head may be similarly changed if desired, and further to produce an apparatus which can be applied to the machine of which the cutter head forms a part without removing the cutter head or the knives. Further to produce a machine of this character which will do the work with accuracy and despatch.
Reference is to be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate corresponding parts in all the views.
Figure 1 is a side elevation of the apparatus embodying my invention, the same being shown as applied to a cutter head, the latter appearing in diagram only, and Fig. 2 is a broken plan view of the apparatus shown in Fig. 1.
The cutter head 10 has tangential knives 11 and essentially radial shoulders 12-which afford backings for the knife supports. The knives project slightly from the face ofthe cutter head and operate as already stated. The machine of which the cutter head is a part has also parallel shafts 13 and 14 just above and adjacent to the center head. These serve as supports for the carriage 15 which can be moved back and forth opposite the cutter head sliding on the shafts 13 and 11. The carriage carries a motor 16 which by means of a belt 1'? drives the grinder 18 adapted to grind and sharpen the knives 11. I do not refer to the driving means of the grinder in detail because any suitable scheme can be used for driving the grinder, although a belt is preferable because it is more flexible and better adapted to permit of variations in the position of the grinder, as will presently appear.
The belt 17 is provided with a tightener having a pulley 19 which presses on one member of the belt, and. the pulley is sup ported on a tilting bracket 20 which is pivoted to the carriage as shown at 21, provided with a slot 22, and with a bolt 23 which projects through the slot and into the carriage so that the position of the tightener bracket 20 can be fixed. On one side the carriage has. a projecting arm 24 through which extends a vertically arranged gage screw 25 having preferably a milled head and a foot 26 which rides on the shaft 13. The position of the screw-fixes the height of the grinder with relation to the knives 11. Extending through the shaft 13 in a line oblique to the horizontal, is an index finger 27 which at its inner end is adapted to abut with the several shoulders 12 of the cutter head, and the position of the index finger is fixed by means of a set screw 28. A collar 29 is placed on the outer end portion of the finger and fastened by a Set screw 30, this collar being set up against the shaft 13 so that the operation of the grinder wheel 18 on one knife can be duplicated on the several knives, aswill presently appear.
It will be seen that when the grinder wheel is rotated in the direction of the arrow in Fig. 1, it will have a tendency to press the shoulder .12 against the index finger 27 and this will fix the bevel of the knife'll which is being ground. This bevel will be determined as is apparent by the length of the index finger from the shaft 13 to the shoulder 12. After one knife is ground the set screw 28 can be loosened and the index finger withdrawn or partly withdrawn, and then pushed back to-position with the collar 29 abutting with the shaft 13, and with the point of the finger against Y the next shoulder 12 of the cutter head, and obviously the bevel of the next knife will be exactly the same as that of the first.
It will be further understood that the grinder wheel 18 is constantly rotating, and that by pushing the carriage 15 along the shafts 13 and 14, the knives 11 will be accurately ground. It will be further understood that any suitable grinding wheel can be used, and that any preferred form of driving mechanism can be employed in connection with the grinder.
I claim 1. A grinder of the kind described comprising a'sliding and tilting carriage adapted to be positioned above the cutter head, a rotary grinding wheel on the carriage, a shaft adjacent one side of the carriage and parallel with the axis of the cutter head to the carriage and riding on the shaft, an index finger extending through the shaft to engage the work being operated on, and a grinding wheel on the carriage.
r 3. 'A grinder for rotary cutter heads comprising a pair of parallel shafts positioned above the cutter head to be ground, a carriage having a seat-on one shaft which permits it to slide and tilt on said shaft, a screw v the travel of the carriage, means riding on HIRAM A. PERKINS.
Witnesses:
WARREN B. HUTCHINSON, M. G. ODONNELL.
Publications (1)
Publication Number | Publication Date |
---|---|
US1193295A true US1193295A (en) | 1916-08-01 |
Family
ID=3261246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1193295D Expired - Lifetime US1193295A (en) | perkins |
Country Status (1)
Country | Link |
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US (1) | US1193295A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2620606A (en) * | 1951-01-11 | 1952-12-09 | Edwin A Dvorak | Portable jointer knife grinder |
US2787094A (en) * | 1954-11-22 | 1957-04-02 | William H Field Co Inc | Cutter grinders |
US2944376A (en) * | 1954-06-22 | 1960-07-12 | Rockwell Mfg Co | Grinder attachment for woodworking machines |
US3149444A (en) * | 1962-09-17 | 1964-09-22 | Robert E Schneider | Hook-on sharpening attachment |
US3793792A (en) * | 1972-01-04 | 1974-02-26 | Sperry Rand Corp | Power knife grinder for a forage harvester capable of grinding first and second bevels on the knives of the forage harvester cutterhead |
US4337808A (en) * | 1979-08-31 | 1982-07-06 | Morisaki Jutakusangyo Kabushiki Kaisha | Super-surfacer |
-
0
- US US1193295D patent/US1193295A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2620606A (en) * | 1951-01-11 | 1952-12-09 | Edwin A Dvorak | Portable jointer knife grinder |
US2944376A (en) * | 1954-06-22 | 1960-07-12 | Rockwell Mfg Co | Grinder attachment for woodworking machines |
US2787094A (en) * | 1954-11-22 | 1957-04-02 | William H Field Co Inc | Cutter grinders |
US3149444A (en) * | 1962-09-17 | 1964-09-22 | Robert E Schneider | Hook-on sharpening attachment |
US3793792A (en) * | 1972-01-04 | 1974-02-26 | Sperry Rand Corp | Power knife grinder for a forage harvester capable of grinding first and second bevels on the knives of the forage harvester cutterhead |
US4337808A (en) * | 1979-08-31 | 1982-07-06 | Morisaki Jutakusangyo Kabushiki Kaisha | Super-surfacer |
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