US2790339A - Scraper-blade-sharpener - Google Patents

Scraper-blade-sharpener Download PDF

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Publication number
US2790339A
US2790339A US563697A US56369756A US2790339A US 2790339 A US2790339 A US 2790339A US 563697 A US563697 A US 563697A US 56369756 A US56369756 A US 56369756A US 2790339 A US2790339 A US 2790339A
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United States
Prior art keywords
sharpener
blade
bore
tool
scraper
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Expired - Lifetime
Application number
US563697A
Inventor
Brink Wilhelm
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Individual
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Individual
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Publication date
Priority to GB33036/52A priority Critical patent/GB720458A/en
Priority claimed from US32960053 external-priority patent/US2790399A/en
Application filed by Individual filed Critical Individual
Priority to US563697A priority patent/US2790339A/en
Application granted granted Critical
Publication of US2790339A publication Critical patent/US2790339A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C11/00—Other machines for forming the dough into its final shape before cooking or baking
    • A21C11/10—Other machines for forming the dough into its final shape before cooking or baking combined with cutting apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4418—Cutters therefor; Dies therefor combining cutting and embossing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4472—Cutting edge section features

Definitions

  • This invention relates to scrapers for woodwork or the like and more particularly to a sharpener for the blades of such scrapers.
  • Figure 1 is a perspective view of a preferred embodiment of the present invention looking from the top thereof;
  • Fig. 2 is a bottom perspective view thereof looking from the same side as Fig. 1;
  • Fig. 3 is a fragmentary rear perspective view thereof
  • Fig. 4 is a vertical sectional view taken along the line 4-4 of Fig. 3;
  • Fig. 5 is a perspective view shown alone of the tempered steel cutting tool forming a part of the invention.
  • the block 10 at one side on the undersurface thereof is provided with a longitudinally extending cutout portion 12 of V-shaped cross section (Fig. 4), the inner side of the cutout 12 lying in a substantially vertical plane at the center of the block.
  • a longitudinally extending cutout portion 12 of V-shaped cross section Fig. 4
  • the inner side of the cutout 12 lying in a substantially vertical plane at the center of the block.
  • an elongated, rectangular plate 13 of brass being suitably mounted thereat by means of the wood screws 14, the upper edge of the plate 13 being freely spaced below the apex of the cutout portion 12 (Fig. 4).
  • the side of the block 10 remote from the cutout portion 12 is formed with a transverse downwardly inclined bore 15 of triangular cross section and having its apex disposed lowermost, as shown in Fig. 3.
  • the bore 15 terminates just short of the other face of the block and the longitudinal axis thereof intersects the plane of the outer face of the cutout portion 12, with the lower edge or corner 16 of the bore 15 passing through the inner face of the cutout portion 12 below the apex thereof and slightly spaced above the upper edge of plate 13 for a purpose which will hereinafter become clear.
  • a tempered steel cutting tool 17 (Fig. 5) of triangular 2,790,339 PatentedApr. 30, 1957 .cross section is sl-idably positioned within the bore 15, being 'adjustably locked therewithin .by means of the countersunk set screw '18 screw threaded through the top. of the block 10 in vertical alignment with bore 15.
  • the tool 17 ⁇ isprovided with the three .cutting edges 19, the l'owermost of which when the tool is positioned with- .in "the. bore 15 being in operative position in vertically spaced relationship to the upper end of the plate 13.
  • the tool 17 may be re- -moved and rotated so as to bring a new cutting edge 19 into operative position, and its position may also be adjusted longitudinally Within the bore 15, in both cases 'to'c'ompensate for wear of the cutting edge.
  • the "lower edge of the tool 17 when positioned within bore 15 is disposed at substantially 18 degrees to the horizontal.
  • the edge of the scraper blade is checked to be sure that it is perfectly straight.
  • the blade is fixedly mounted by suitable means (as shown in phantom in Fig. 4) with the scraper blade edge uppermost.
  • the sharpener is then grasped by means of the block 10 which serves as a convenient handle and with an even pressure it is pushed slowly twice over the blade shown in phantom lines in Figure 4, bringing the cutting edge 19 of the tool 17 across the edge at the indicated angle.
  • the blade is then reversed, and the operation repeated on the other side.
  • the space between the upper edge of the plate 13 and the cutting edge 19 of the tool is to accommodate the already sharpened edge of the scraper blade (Fig. 4).
  • scraper blade sharpener which will eliminate cut fingers while sharpening the blade and which will provide two perfectly sharp edges of the scraper blade, thus permitting the scraper blade to be employed for sur-facing cabinets or the like and in an efiicient manner. It would also be apparent that there has been provided a scraper blade sharpener of the above type which is easy to use, will provide a perfectly sharp pair of edges on the blade and wherein the sharpening tool is adjustable and may be rotated to bring a plurality of sharpening edges into operative position to compensate for wear.
  • the block 10 is one and five-eighth inches by two and a half inches by seven inches, while the tempered steel tool 17 is one and nine-sixteenth inches long and seven-sixteenth inches wide across each face.
  • the brass plate 13 is one-sixteenth of an inch by fifteen-sixteenths of an inch by seven inches.
  • the space between the plate 13 and the shar'pening steel is three-thirty-seconds of an inch.
  • a scraper-blade-sharpener comprising an elongated body member, said body member at one side on the bottom thereof having a cut out portion extending substantially the length thereof, said cut out portion being of substantially triangular cross section and having an inner face lying in a substantially vertical plane at the center of said body, said body at the side thereof remote from said out out portionhaving a transverse inclined bore extending downwardly toward the outer face thereof, said transverse bore being of angular cross section with a plurality of corners with one of said corners being disposed lowermost, said bore axis intersecting the plane of the outer face of said out out portion and having the lower corner thereof extending downwardly below the outer face and intersecting the same, a cutting tool of 3 angular cross section adapted to slide within said bore and having a plurality of cutting edges adapted to be alternately positioned within the lowermost corners of said borevbelow said outer face of said out out portion to compensate for wear, locking means for securing said tool within said transverse bore, and a metal plate secured to
  • said upper edge being fir'eely spaced from the operative cutting edge of said tool when in position within said transverse bore whereby to accommodate the sharpened side of the scraper blade while the other side is being sharpened.
  • said locking means comprises a set screw countersunk and screw threaded through the top of said body and adapted to bear on said tool.
  • a scraper blade sharpener according to claim 2 said transverse bore being substantially equi-lateral trlangular in cross section, said tool having three equiangul-arly spaced cutting edges and being of the same cross section as said bore.
  • a scraper blade sharpener according to claim 3, the lower edge of said cutting tool within said bore being disposed at substantially 18 degrees to the horizontal when the inner face of said cutout portion is in a substantially vertical plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Confectionery (AREA)

Description

April 30, 1957 w. BRINK SCRAPER-BLADE-SHARPENER Filed Feb. 6, 1956 IN VEN TOR.
n m States PatentO 'SCRAPER-BLADE-SHARPENER Wilhelm Brink, Dayton, Ohio Application February 6, 1956, Serial No. 563,697 4 Claims. or. 76-82) This invention relates to scrapers for woodwork or the like and more particularly to a sharpener for the blades of such scrapers.
It is an object of the present invention to provide a scraper blade sharpener which will provide a perfect and sharp edge on the scraper blade with a minimum of effort.
It is another object of the present invention to provide a scraper blade sharpener of the above type which includes a sharpening edge which is adjustable and contains a plurality of sharpening edges which may alternately be rotated into operative position.
Other objects of the present invention are to provide a scraper blade sharpener bearing the above objects in mind which is of simple construction, has a minimum number of parts, is inexpensive to manufacture and efiicient in operation.
For other objects and a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:
Figure 1 is a perspective view of a preferred embodiment of the present invention looking from the top thereof;
Fig. 2 is a bottom perspective view thereof looking from the same side as Fig. 1;
Fig. 3 is a fragmentary rear perspective view thereof;
Fig. 4 is a vertical sectional view taken along the line 4-4 of Fig. 3; and
Fig. 5 is a perspective view shown alone of the tempered steel cutting tool forming a part of the invention.
Referring now more in detail to the drawing, indicates a rectangular block of solid hardwood, metal or other suitable material having the beveled edges 11, substantially as illustrated.
The block 10 at one side on the undersurface thereof is provided with a longitudinally extending cutout portion 12 of V-shaped cross section (Fig. 4), the inner side of the cutout 12 lying in a substantially vertical plane at the center of the block. Positioned against this inner face of the cutout portion 12 is an elongated, rectangular plate 13 of brass, being suitably mounted thereat by means of the wood screws 14, the upper edge of the plate 13 being freely spaced below the apex of the cutout portion 12 (Fig. 4).
The side of the block 10 remote from the cutout portion 12 is formed with a transverse downwardly inclined bore 15 of triangular cross section and having its apex disposed lowermost, as shown in Fig. 3. As shown in Fig. 4, the bore 15 terminates just short of the other face of the block and the longitudinal axis thereof intersects the plane of the outer face of the cutout portion 12, with the lower edge or corner 16 of the bore 15 passing through the inner face of the cutout portion 12 below the apex thereof and slightly spaced above the upper edge of plate 13 for a purpose which will hereinafter become clear.
A tempered steel cutting tool 17 (Fig. 5) of triangular 2,790,339 PatentedApr. 30, 1957 .cross section is sl-idably positioned within the bore 15, being 'adjustably locked therewithin .by means of the countersunk set screw '18 screw threaded through the top. of the block 10 in vertical alignment with bore 15. The tool 17 {isprovided with the three .cutting edges 19, the l'owermost of which when the tool is positioned with- .in "the. bore 15 being in operative position in vertically spaced relationship to the upper end of the plate 13. By means of the set screw .18, the tool 17 may be re- -moved and rotated so as to bring a new cutting edge 19 into operative position, and its position may also be adjusted longitudinally Within the bore 15, in both cases 'to'c'ompensate for wear of the cutting edge.
The "lower edge of the tool 17 when positioned within bore 15 is disposed at substantially 18 degrees to the horizontal.
In operation, the edge of the scraper blade is checked to be sure that it is perfectly straight. After this is done, the blade is fixedly mounted by suitable means (as shown in phantom in Fig. 4) with the scraper blade edge uppermost. The sharpener is then grasped by means of the block 10 which serves as a convenient handle and with an even pressure it is pushed slowly twice over the blade shown in phantom lines in Figure 4, bringing the cutting edge 19 of the tool 17 across the edge at the indicated angle. The blade is then reversed, and the operation repeated on the other side. The space between the upper edge of the plate 13 and the cutting edge 19 of the tool is to accommodate the already sharpened edge of the scraper blade (Fig. 4).
It should now be apparent that there has been provided a scraper blade sharpener which will eliminate cut fingers while sharpening the blade and which will provide two perfectly sharp edges of the scraper blade, thus permitting the scraper blade to be employed for sur-facing cabinets or the like and in an efiicient manner. It would also be apparent that there has been provided a scraper blade sharpener of the above type which is easy to use, will provide a perfectly sharp pair of edges on the blade and wherein the sharpening tool is adjustable and may be rotated to bring a plurality of sharpening edges into operative position to compensate for wear.
The block 10 is one and five-eighth inches by two and a half inches by seven inches, while the tempered steel tool 17 is one and nine-sixteenth inches long and seven-sixteenth inches wide across each face. The brass plate 13 is one-sixteenth of an inch by fifteen-sixteenths of an inch by seven inches. The space between the plate 13 and the shar'pening steel is three-thirty-seconds of an inch.
While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.
What is claimed as new and what is desired to protect by Letters Patent of the United States is:
l. A scraper-blade-sharpener comprising an elongated body member, said body member at one side on the bottom thereof having a cut out portion extending substantially the length thereof, said cut out portion being of substantially triangular cross section and having an inner face lying in a substantially vertical plane at the center of said body, said body at the side thereof remote from said out out portionhaving a transverse inclined bore extending downwardly toward the outer face thereof, said transverse bore being of angular cross section with a plurality of corners with one of said corners being disposed lowermost, said bore axis intersecting the plane of the outer face of said out out portion and having the lower corner thereof extending downwardly below the outer face and intersecting the same, a cutting tool of 3 angular cross section adapted to slide within said bore and having a plurality of cutting edges adapted to be alternately positioned within the lowermost corners of said borevbelow said outer face of said out out portion to compensate for wear, locking means for securing said tool within said transverse bore, and a metal plate secured to the inner (face of said cut out portion of said block and having an upper edge extending parallel to and freely spaced below the apex of said out out portion, 1
said upper edge being fir'eely spaced from the operative cutting edge of said tool when in position within said transverse bore whereby to accommodate the sharpened side of the scraper blade while the other side is being sharpened.
2. A scraper blade sharpener according to claim l, said locking means comprises a set screw countersunk and screw threaded through the top of said body and adapted to bear on said tool. 1 i
3. A scraper blade sharpener according to claim 2, said transverse bore being substantially equi-lateral trlangular in cross section, said tool having three equiangul-arly spaced cutting edges and being of the same cross section as said bore.
4. A scraper blade sharpener according to claim 3, the lower edge of said cutting tool within said bore being disposed at substantially 18 degrees to the horizontal when the inner face of said cutout portion is in a substantially vertical plane. I
References Cited in the file of this patent UNITED STATES PATENTS 551,292 Moss Dec. 10, 1895 592,486 Borden' Oct. 26, 1897 788,447 Windsor Apr. 25, 1905
US563697A 1952-12-31 1956-02-06 Scraper-blade-sharpener Expired - Lifetime US2790339A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB33036/52A GB720458A (en) 1952-12-31 1952-12-31 Improvements in or relating to the moulding and cutting of plastic material
US563697A US2790339A (en) 1952-12-31 1956-02-06 Scraper-blade-sharpener

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB33036/52A GB720458A (en) 1952-12-31 1952-12-31 Improvements in or relating to the moulding and cutting of plastic material
US32960053 US2790399A (en) 1952-12-31 1953-01-05 Machinery for molding and cutting out pieces of plastic material from a web
US563697A US2790339A (en) 1952-12-31 1956-02-06 Scraper-blade-sharpener

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339433A (en) * 1963-08-02 1967-09-05 Sonn Gustl Sharpening device for steel edges of skis
US4498360A (en) * 1983-09-14 1985-02-12 Milum J David Sharpener for a spreading tool
US4878321A (en) * 1988-07-20 1989-11-07 Whitehead Stanley A Automatic portable sharpening kit for electric cattle shearers/clippers
US20130091676A1 (en) * 2011-10-14 2013-04-18 Robert W. Schuetz Lawn mower blade sharpener and method of using same
US11351693B1 (en) * 2020-09-03 2022-06-07 Richard Karas Slicer blade guide with wear insert
US11491671B2 (en) 2019-04-17 2022-11-08 Ramon Canelon Spatula edge trimming apparatus
USD1028667S1 (en) * 2022-04-08 2024-05-28 Rockler Companies, Inc. Sharpening tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107457453A (en) * 2017-08-16 2017-12-12 李胜 A kind of blanking, pushing positioner and the beveler using the device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US551292A (en) * 1895-12-10 Sharpener for shears
US592486A (en) * 1897-10-26 Device for sharpening scissors
US788447A (en) * 1903-10-24 1905-04-25 Charles H Windsor Scissors-sharpener.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US551292A (en) * 1895-12-10 Sharpener for shears
US592486A (en) * 1897-10-26 Device for sharpening scissors
US788447A (en) * 1903-10-24 1905-04-25 Charles H Windsor Scissors-sharpener.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339433A (en) * 1963-08-02 1967-09-05 Sonn Gustl Sharpening device for steel edges of skis
US4498360A (en) * 1983-09-14 1985-02-12 Milum J David Sharpener for a spreading tool
US4878321A (en) * 1988-07-20 1989-11-07 Whitehead Stanley A Automatic portable sharpening kit for electric cattle shearers/clippers
US20130091676A1 (en) * 2011-10-14 2013-04-18 Robert W. Schuetz Lawn mower blade sharpener and method of using same
US11491671B2 (en) 2019-04-17 2022-11-08 Ramon Canelon Spatula edge trimming apparatus
US11351693B1 (en) * 2020-09-03 2022-06-07 Richard Karas Slicer blade guide with wear insert
USD1028667S1 (en) * 2022-04-08 2024-05-28 Rockler Companies, Inc. Sharpening tool

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Publication number Publication date
GB720458A (en) 1954-12-22

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