US2632289A - Device for sharpening the blades of slicing machines for slicing eatables - Google Patents

Device for sharpening the blades of slicing machines for slicing eatables Download PDF

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US2632289A
US2632289A US94883A US9488349A US2632289A US 2632289 A US2632289 A US 2632289A US 94883 A US94883 A US 94883A US 9488349 A US9488349 A US 9488349A US 2632289 A US2632289 A US 2632289A
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Prior art keywords
blade
slicing
carriage
wheel
sharpening
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US94883A
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Ditting Adolf
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    • 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
    • B24B3/46—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of disc blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers

Definitions

  • the present invention relates to a device for sharpening the blades of slicing machines for slicing eatables.
  • the device is constituted by two grinding wheels set at an angle equal to the taper of the blade on a bracket provided with a means for fastening it on the carriage of the Slicing machine so that to sharpen the blade the grinding wheels can be fed to the blade together with the carriage, the grinding wheel designed to remove the burr being held by a spring at a certain axial distance from the said blade so that it is only when its axle is pressed with a finger that the said grinding wheel contacts the blade in order to remove the burr produced by the grinding wheel proper.
  • Fi 1 is a front view of the bracket with the grinding wheels
  • Fig. 2 is a top view of Fig. 1,
  • Fig. 3 shows how the bracket illustrated in Fig. 1 is fastened on a V-shaped carriage
  • Fig. 4 shows how the bracket illustrated in Fig. 1 is provided with a fiat base and is fastened on a fiat carriage.
  • the bracket l (of. Fig. 1) has a foot 2 whose bearing surfaces 3 are inclined towards each other and correspond to the recess 4 of the V- shaped carriage 5.
  • This V-shaped foot 2 can be slipped into the recess 4 of the carriage 5 and fastened thereon with the screw 6.
  • the said foot can also be designed with a fiat base and can, as shown in Fig. 4, be fastened on a fiat carriage, for instance with thumb screws.
  • To the foot 2 is attached an arm I provided with two holes which support the axles 8 and 9 of the grinding wheels l0 and H. The angle formed by the two axles is equal to the taper of the blade l2.
  • the wheel l0 carried by the axle 9 is pressed by the spring l3 against the collar Hi on the said axle 9.
  • the wheel ll carried by the axle 8 is similarly pressed by the spring 15 against the collar [6 on the said axle 8.
  • the distance between the grinding surface of the wheel H and the smooth side I! of the blade I2 is chosen so that the grinding wheel H does not contact the blade l2.
  • the blade I2 is ground by the wheel [0, and the wheel H only serves to remove the burr produced by the wheel l8.
  • on the axle 8 there is a rotatable sleeve l8 supported on a ball l9 and held fast in the other axial direction by a retaining ring 20. A light pressure of a finger on the sleeve l8 sufiices to press the grinding wheel I I against the smooth side I! of the blade I2, thus removing the burr.
  • Slicing machines such as have been described, ordinarily include a movable plate substantially parallel to the plane of the blade for determining the thickness of a slice, and this plate is first moved away from the blade as far as is possible to free the edge of the blade for sharpening.
  • the foot 2 of the grinding apparatus is then aflixed to the movable carriage of the machine, as has been described, and this carriage is then moved toward the blade, which is rotating for the grinding operation.
  • grinding wheel I I does not contact the blade and is maintained at a fixed distance from blade I! by spring 15.
  • the burr which is formed by the abrasive action of wheel [0 on the rotary blade is removed by manually pressing wheel ll, against the action of spring I5, into contact with the blade edge.
  • a device for sharpening the blades of slicing machines having a carriage for carrying the article to be sliced and a rotatable blade for slicing said article, comprising a single supporting arm having an integral pedestal removably mounted upon said carriage, said supporting arm defining first and second bores the axes of which form an angle equal to the taper angle of the edge of said blade, first and second axles passing respectively through said bores and axially movable therein, a first abrasive disc carried by said first axle adjacent one face of said blade edge, said first axle including first spring biassing means urging said first disc into contact with said one face, and a second abrasive disc carried by said second axle adjacent the other face of said blade edge, said second axle including second spring biassing means normally maintaining said second disc away from said other face, said second axle also including a sleeve attached thereto whereby said second axle may be moved in said second bore against the action of said second spring biassing means to place said second abrasive disc in
  • first and second axles include collars: between said abrasive discs and said supporting arm todetermine limit positions of said abrasive discs.

Description

March 24, 1953 A. DITTING 2,632,289
mzvxcs FOR SHARPENING THE BLADES 0F sucmc M,
MACHINES FOR sucmc EATABLES Filed May 25, 1949 Patented Mar. 24, 1953 UNITED STATES PATENT OFFICE DEVICE FOR SHARPENING THE BLADES OF SLICING MACHINES FOR SLICING EAT- ABLES Adolf Ditting, Zurich, Switzerland 3 Claims.
The present invention relates to a device for sharpening the blades of slicing machines for slicing eatables.
The device is constituted by two grinding wheels set at an angle equal to the taper of the blade on a bracket provided with a means for fastening it on the carriage of the Slicing machine so that to sharpen the blade the grinding wheels can be fed to the blade together with the carriage, the grinding wheel designed to remove the burr being held by a spring at a certain axial distance from the said blade so that it is only when its axle is pressed with a finger that the said grinding wheel contacts the blade in order to remove the burr produced by the grinding wheel proper.
In the accompanying drawing two embodiments of the object of the invention are illustrated by way of example.
Fi 1 is a front view of the bracket with the grinding wheels,
Fig. 2 is a top view of Fig. 1,
Fig. 3 shows how the bracket illustrated in Fig. 1 is fastened on a V-shaped carriage,
Fig. 4 shows how the bracket illustrated in Fig. 1 is provided with a fiat base and is fastened on a fiat carriage.
The bracket l (of. Fig. 1) has a foot 2 whose bearing surfaces 3 are inclined towards each other and correspond to the recess 4 of the V- shaped carriage 5. This V-shaped foot 2 can be slipped into the recess 4 of the carriage 5 and fastened thereon with the screw 6. The said foot can also be designed with a fiat base and can, as shown in Fig. 4, be fastened on a fiat carriage, for instance with thumb screws. To the foot 2 is attached an arm I provided with two holes which support the axles 8 and 9 of the grinding wheels l0 and H. The angle formed by the two axles is equal to the taper of the blade l2. The wheel l0 carried by the axle 9 is pressed by the spring l3 against the collar Hi on the said axle 9. The wheel ll carried by the axle 8 is similarly pressed by the spring 15 against the collar [6 on the said axle 8. The distance between the grinding surface of the wheel H and the smooth side I! of the blade I2 is chosen so that the grinding wheel H does not contact the blade l2. The blade I2 is ground by the wheel [0, and the wheel H only serves to remove the burr produced by the wheel l8. For this purpose, on the axle 8 there is a rotatable sleeve l8 supported on a ball l9 and held fast in the other axial direction by a retaining ring 20. A light pressure of a finger on the sleeve l8 sufiices to press the grinding wheel I I against the smooth side I! of the blade I2, thus removing the burr.
In practice, if the rotary blade of the slicing machine needs to be sharpened, the following procedure is followed. Slicing machines, such as have been described, ordinarily include a movable plate substantially parallel to the plane of the blade for determining the thickness of a slice, and this plate is first moved away from the blade as far as is possible to free the edge of the blade for sharpening. The foot 2 of the grinding apparatus is then aflixed to the movable carriage of the machine, as has been described, and this carriage is then moved toward the blade, which is rotating for the grinding operation. During this phase of the operation grinding wheel I I does not contact the blade and is maintained at a fixed distance from blade I! by spring 15. Grinding wheel It] does come into contact with the blade edge however and, as the carriage is moved toward the blade even further, the force of the blade against wheel l0 causes the said wheel Hi to move axially outward against the force of spring [3. Thus it will be noted that the position of wheel I l with respect to the blade is independent of carriage position, while the,
physical position of wheel I!) with respect to the blade varies in accordance with the relative position of blade and carriage. Inasmuch as carriage movement causes wheel 10 to move in this way when the wheel is in contact with the blade, an automatic pressure control is effected during the grinding operation.
The burr which is formed by the abrasive action of wheel [0 on the rotary blade is removed by manually pressing wheel ll, against the action of spring I5, into contact with the blade edge.
I claim:
1. A device for sharpening the blades of slicing machines having a carriage for carrying the article to be sliced and a rotatable blade for slicing said article, comprising a single supporting arm having an integral pedestal removably mounted upon said carriage, said supporting arm defining first and second bores the axes of which form an angle equal to the taper angle of the edge of said blade, first and second axles passing respectively through said bores and axially movable therein, a first abrasive disc carried by said first axle adjacent one face of said blade edge, said first axle including first spring biassing means urging said first disc into contact with said one face, and a second abrasive disc carried by said second axle adjacent the other face of said blade edge, said second axle including second spring biassing means normally maintaining said second disc away from said other face, said second axle also including a sleeve attached thereto whereby said second axle may be moved in said second bore against the action of said second spring biassing means to place said second abrasive disc in contact with said other face of said blade edge at the will of the operator, said rotatable blade being mounted substantially perpendicularly to the direction of travel of said carriage, said first axle being movable in said first bore against the action of said first spring biassing means as said carriage is moved toward said rotatable blade whereby said first abrasive disc is maintained in contact with said one face of said bladev and the physical position of said first abrasive disc with respect to said supporting arm varies with the position of said moving carriage, the position of said second abrasive disc with respect to said supporting arm being independent'of the position carriage, one of said first and second bores being adjacent the other extremity of said supporting arm, and the other of said first and second bores being intermediate the extremities of said supporting arm.
3. The device of claim 2 wherein said first and second axles include collars: between said abrasive discs and said supporting arm todetermine limit positions of said abrasive discs.
ADOLF DITTING.
REFERENCES CITED The following references are of record in the file of, this patent:
UNITED STATES PATENTS Number Name Date 1,033,795 Goodfellow July 30, 1912 1,176,136 Demuth Mar. 21, 1916 1,308,786 Hopkinson July 8, 1919 1,483,878 Hand Feb. 19,. 1,924 ,7 2 04.. mpb ll Ami-.12, 1,930; 2,022,799 Blosser et a1. Dec. 3, 1,935 2,291,260 Streckfuss et a1. July 26, 1942 FOREIGN PATENTS Number Country Date 116,073 Sweden Nov. 17, 194.4,
US94883A 1948-06-18 1949-05-23 Device for sharpening the blades of slicing machines for slicing eatables Expired - Lifetime US2632289A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010261A (en) * 1958-05-24 1961-11-28 Hauni Werke Koerber & Co Kg Machines for cutting cigarettes, cigarillos, filter components or the like having a rotary cutter and a grinder therefor
US10035235B2 (en) * 2013-12-02 2018-07-31 Futura S.P.A. Device for sharpening blades

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1033795A (en) * 1912-04-01 1912-07-30 Us Slicing Machine Co Device for sharpening the rotary circular knives of meat-slicing machines and the like.
US1176136A (en) * 1915-03-17 1916-03-21 Alfred M Demuth Sharpening device for knives of meat-slicing machines.
US1308786A (en) * 1919-07-08 Scale
US1483878A (en) * 1920-07-10 1924-02-19 A J Deer Company Inc Slicing machine
US1772704A (en) * 1927-07-08 1930-08-12 American Slicing Machine Co Knife sharpener for slicing machines
US2022799A (en) * 1934-10-31 1935-12-03 Veldown Company Inc Cutting machinery
US2291260A (en) * 1938-07-27 1942-07-28 Cincinnati Time Recorder Co Meat slicer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1308786A (en) * 1919-07-08 Scale
US1033795A (en) * 1912-04-01 1912-07-30 Us Slicing Machine Co Device for sharpening the rotary circular knives of meat-slicing machines and the like.
US1176136A (en) * 1915-03-17 1916-03-21 Alfred M Demuth Sharpening device for knives of meat-slicing machines.
US1483878A (en) * 1920-07-10 1924-02-19 A J Deer Company Inc Slicing machine
US1772704A (en) * 1927-07-08 1930-08-12 American Slicing Machine Co Knife sharpener for slicing machines
US2022799A (en) * 1934-10-31 1935-12-03 Veldown Company Inc Cutting machinery
US2291260A (en) * 1938-07-27 1942-07-28 Cincinnati Time Recorder Co Meat slicer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010261A (en) * 1958-05-24 1961-11-28 Hauni Werke Koerber & Co Kg Machines for cutting cigarettes, cigarillos, filter components or the like having a rotary cutter and a grinder therefor
US10035235B2 (en) * 2013-12-02 2018-07-31 Futura S.P.A. Device for sharpening blades

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