US2546546A - Scraping disk - Google Patents
Scraping disk Download PDFInfo
- Publication number
- US2546546A US2546546A US63352A US6335248A US2546546A US 2546546 A US2546546 A US 2546546A US 63352 A US63352 A US 63352A US 6335248 A US6335248 A US 6335248A US 2546546 A US2546546 A US 2546546A
- Authority
- US
- United States
- Prior art keywords
- scraping
- disc
- wheels
- circular plates
- axes
- 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
- 238000007790 scraping Methods 0.000 title description 31
- 239000003292 glue Substances 0.000 description 5
- 239000010985 leather Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007788 roughening Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000002022 Anthriscus cerefolium Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/48—Roughening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/45—Scale remover or preventor
- Y10T29/4528—Scale remover or preventor with rotary head
Definitions
- the present invention relates to a scraping disc for roughening the marginal portions of the upper leather and sole so as to secure stronger adw herence of the glue in the manufacture of glued footwear.
- rEhe scraping discs hitherto known for this purpose are provided usually around their periphery with a removable abrasive strip or band, e. g. of paper or cloth coated with glass powder or the like.
- the principal disadvantage of the scraping discs of this kind resides in the rapid wear of the abrasive strips or bands and as a consequence in the loss of time in themanufacturing process, since it is necessary to exchange frequently the worn abrasive strips. If the abrasive strip breaks during the working process, as it has frequently happened hitherto, when no attention has been paid to this possibility, the broken strip may seriously injure the assistant during his work.
- the scraping disc consists of two circular plates having provided be tween the same at their peripheries a plurality of sets of small scraping wheels freely rotatable about their own axes, which latter are arranged out of parallelism with the rotational axis of the circular plates.
- Fig. l is a top view of a portion of the disc periphery in development
- Fig. 2 is a side view partly broken away to show the small scraping wheels
- Figure 3 is a sectional view through a portion of the assembly of Fig. 2 showing the mounting of the scraping wheels.
- the scraping disc shown comprises a number of sets of small scraping wheels I consisting each of individual metallic star wheels 2 which are mounted on pins 5 and, if desired, may be separated from each other by means of spacing rings 4.
- the stars 2 and the spacing rings 4, if any, are mounted for free rotation on the pins 5, the openings 3 in the stars 2 being substantially larger than the diameter of the pins 5.
- the pins 5 are rigidly held at their one extremity in wedge-shaped projections 6 provided on the circular plates 1 and at their opposite extremity are inserted in recesses 8 formed in wedge shaped projections 9 on the other circular plate HJ.
- the two plates 1 and I0 are provided each with an aperture il by means of which they are mounted on a shaft, and are clamped together by means of bolts I2.
- the scraping eifect of the disc in accordance with the present invention is uniform because the stars 2 which are urged outwards by the centrifugal force, yield softly during the scraping operation, and if the pressure of the material to be roughened incidentally increases, they give away so that an undesired scraping through the whole thickness of the material cannot take place.
- a scraping disc more particularly for roughening the marginal portions of the upper leather and sole to improve the adherence of the glue in the manufacture of glued footwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be rough-v ened, the said axes being arranged out of parallelism with the rotational axis of the circular plates.
- a scraping disc more particularly for roughenlng the marginal portions of the upper leather and sole to improve the adherence of the glue in the manufacture of glued footwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be roughened, the said axes being arranged out of parallelism with the rotational axis of the circular plates, the small scraping wheels consisting of metallic star wheels mounted for free rotation on pivot pins.
- a scraping disc more particularly for roughing the marginal portions of the upper leather and sole to improve the adherence of the glue in the manufacture of glued footwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be roughened, the said axes being arranged out of parallelism with the rotational axis of the circular plates, the small scraping wheels consisting of metallic star wheels mountedv4 for free rotation on pivot pins, which are intimated between the circular plates and are held in position by clamping the latter together by means ot bolts.
- a scraping disc more particularly for roughening the marginal portions of the upper leather and sole to improve the adherence oi the glue in the manufacture of glued'iootwear
- the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be roughened, the said axes being arranged out of parallelism with the rotational axis of the circular plates
- the small scraping wheels consisting of metallic star wheels mounted for free rotation on pivot pins, which are mounted between the circular plates and are held in position by clampingrthe latter together by means of bolts, the scraping star wheels of each set being separated from one another by means of spacing rings.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
March 27,v 1951 E. KORBEL SCRAPING DISK Filed Dec.
INVENTOR ATTORNEYj Patented Mar. 27, 1951 2,546,546 y l my?, L
SCRAPINGDISK v The present invention relates to a scraping disc for roughening the marginal portions of the upper leather and sole so as to secure stronger adw herence of the glue in the manufacture of glued footwear. rEhe scraping discs hitherto known for this purpose are provided usually around their periphery with a removable abrasive strip or band, e. g. of paper or cloth coated with glass powder or the like. The principal disadvantage of the scraping discs of this kind resides in the rapid wear of the abrasive strips or bands and as a consequence in the loss of time in themanufacturing process, since it is necessary to exchange frequently the worn abrasive strips. If the abrasive strip breaks during the working process, as it has frequently happened hitherto, when no attention has been paid to this possibility, the broken strip may seriously injure the assistant during his work.
For the above reasons, rubber scraping discs have been used in some cases with thin steel wires anchored in the rubber. Since concurrently with the wear of the steel wires, the disc itself becomes worn out, it is not necessary to renew the abrasive surface of the disc and there is no danger of injury as with the first mentioned construction of the scraping discs. But this apparent advantage does not counterbalance the losses which arise due to the relatively large waste of rubber in the gradual abrasion of the disc proper and to the continuously diminishing scraping effect as a consequence of the reduction of the circumferential speed with the decrease of the diameter of the disc due to the wear to the latter.
All'the disadvantages referred to are eliminated by the scraping disc in accordance with the present invention. The main feature of the invention resides in that the scraping disc consists of two circular plates having provided be tween the same at their peripheries a plurality of sets of small scraping wheels freely rotatable about their own axes, which latter are arranged out of parallelism with the rotational axis of the circular plates.
An example of a scraping disc in accordance with the present invention is shown by way of example in the accompanying drawing in' which Fig. l is a top view of a portion of the disc periphery in development;
Fig. 2 is a side view partly broken away to show the small scraping wheels; and
Figure 3 is a sectional view through a portion of the assembly of Fig. 2 showing the mounting of the scraping wheels. Y
4 Claims.
Application December 3, 1948, vSerial-bidi r In ICzechoslovakia Decemberl1, 1947 wiege; i
Referring to the drawing, the scraping disc shown comprises a number of sets of small scraping wheels I consisting each of individual metallic star wheels 2 which are mounted on pins 5 and, if desired, may be separated from each other by means of spacing rings 4. The stars 2 and the spacing rings 4, if any, are mounted for free rotation on the pins 5, the openings 3 in the stars 2 being substantially larger than the diameter of the pins 5.
The pins 5 are rigidly held at their one extremity in wedge-shaped projections 6 provided on the circular plates 1 and at their opposite extremity are inserted in recesses 8 formed in wedge shaped projections 9 on the other circular plate HJ. The two plates 1 and I0 are provided each with an aperture il by means of which they are mounted on a shaft, and are clamped together by means of bolts I2.
The scraping eifect of the disc in accordance with the present invention is uniform because the stars 2 which are urged outwards by the centrifugal force, yield softly during the scraping operation, and if the pressure of the material to be roughened incidentally increases, they give away so that an undesired scraping through the whole thickness of the material cannot take place.
What I claim is:
1. In a scraping disc, more particularly for roughening the marginal portions of the upper leather and sole to improve the adherence of the glue in the manufacture of glued footwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be rough-v ened, the said axes being arranged out of parallelism with the rotational axis of the circular plates. y
2. In a scraping disc, more particularly for roughenlng the marginal portions of the upper leather and sole to improve the adherence of the glue in the manufacture of glued footwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be roughened, the said axes being arranged out of parallelism with the rotational axis of the circular plates, the small scraping wheels consisting of metallic star wheels mounted for free rotation on pivot pins.
3. In a scraping disc. more particularly for roughing the marginal portions of the upper leather and sole to improve the adherence of the glue in the manufacture of glued footwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be roughened, the said axes being arranged out of parallelism with the rotational axis of the circular plates, the small scraping wheels consisting of metallic star wheels mountedv4 for free rotation on pivot pins, which are intimated between the circular plates and are held in position by clamping the latter together by means ot bolts.
4. In a scraping disc, more particularly for roughening the marginal portions of the upper leather and sole to improve the adherence oi the glue in the manufacture of glued'iootwear, the arrangement of two circular plates having mounted between the same at the peripheries of the plates a plurality of sets of small scraping wheels freely rotatable about their own axes upon engagement with the surface to be roughened, the said axes being arranged out of parallelism with the rotational axis of the circular plates, the small scraping wheels consisting of metallic star wheels mounted for free rotation on pivot pins, which are mounted between the circular plates and are held in position by clampingrthe latter together by means of bolts, the scraping star wheels of each set being separated from one another by means of spacing rings.
BEDRICH KORBEL.
No references cited.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS2546546X | 1947-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2546546A true US2546546A (en) | 1951-03-27 |
Family
ID=5458862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US63352A Expired - Lifetime US2546546A (en) | 1947-12-11 | 1948-12-03 | Scraping disk |
Country Status (1)
Country | Link |
---|---|
US (1) | US2546546A (en) |
-
1948
- 1948-12-03 US US63352A patent/US2546546A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
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None * |
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