US3761984A - Cutlery polishing machine - Google Patents

Cutlery polishing machine Download PDF

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Publication number
US3761984A
US3761984A US00144788A US3761984DA US3761984A US 3761984 A US3761984 A US 3761984A US 00144788 A US00144788 A US 00144788A US 3761984D A US3761984D A US 3761984DA US 3761984 A US3761984 A US 3761984A
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US
United States
Prior art keywords
polishing
machine
container
mixture
roller
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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
Application number
US00144788A
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English (en)
Inventor
W Hauschild
H Hauschild
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Individual
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Individual
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Publication date
Priority claimed from DE19702024379 external-priority patent/DE2024379C3/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3761984A publication Critical patent/US3761984A/en
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Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L21/00—Polishing of table-ware, e.g. knives, forks, spoons
    • A47L21/02—Machines

Definitions

  • ABSTRACT A machine for polishing workpieces such as cutlery and other small articles, where the polishing roller, or rollers, are enclosed inside a container holding the polishing mixture in the form of a low-viscosity liquid, and the workpieces held by a reciprocating work frame are introduced from above through a restricted opening to the work area on the roller periphery.
  • the polishing liquid is kept in constant agitation and continuously fed to the rollers either by the rollers dipping into the liquid, or by a circulatory system with a squeeze pump, whereby the polishing liquid acts as an effective coolant.
  • the invention relates to polishing machines, and in particular to machines for polishing cutlery and other small metal articles using a polishing roller and a continuous supply of polishing mixture in liquid form.
  • the size of the roller brush In order to work all surface portions of the cutlery pieces, and especially the bottom of their concave surface portions, the size of the roller brush must be kept small in diameter. This made it necessary to arrange the roller brush at an angle to the conveyor to assure that the entire length of the cutlery pieces passing underneath the roller is worked. This arrangement has the shortcoming that some of the fluid polishing mixture is ejected from the ends of the roller brush through the open sides of the drum, while further loss of polishing mixture occurs through evaporization and atomization of the mixture and through escape of these vapors from the drum.
  • One way to counteract these problems is to radically reduce the speed of the roller brush, with the result, however, that the operating capacity is reduced correspondingly. Moreover, the surface quality attainable under such circumstances is lowered. Indeed, the general procedure as suggested in this prior art solution is inadequate for cases where a high-quality, perfectly even surface treatment is necessary.
  • a further disadvantage of the above device is the space required for the rotating drum, adding to the problems of structural support and drive, in view of current industrial safety standards.
  • the amount of polishing fluid usable at any one time is limited, and the fluid itself must be sufficiently viscous to adhere to the walls of the drum so as to be carried upward.
  • liquid polishing mixtures In principle, it was found to be preferable to use liquid polishing mixtures, because they can be applied easily and in any quantity and because they can be produced from inexpensive raw materials, especially when using water as the carrier liquid. Liquids have the additional advantage of producing a convenient cooling effect on the polishing rollers and workpieces where considerable heat is normally developed. The use of liquid mixtures thus greatly reduces the previously experienced deterioration of the surrounding plant atmosphere through smoke and vapors originating from the burn-off on the polishing rollers and the vaporization of the polishing fluid.
  • the invention suggests in particular, a way in which the polishing liquid can be used in a low-viscosity state and in sufficient quantity to provide for effective cooling of the high-speed polishing rollers as well as of the workpieces.
  • the polishing liquid is no longer subject to loss from ejection and vaporization, the burn-off and chipping of the bristles of the polishing rollers are no longer a problem, and the polishing liquid maintains its consistency and composition over a longer period. The latter, after exhaustion, can be removed from the device and replaced in a very simple procedure.
  • the device of the invention is of a structure which is economic to produce, simple in maintenance, and safe as an industrial installation.
  • the invention proposes to attain the above objective by suggesting a polishing machine where the polishing roller is arranged inside a substantially closed container holding the polishing liquid, while a plurality of cutlery pieces or similar articles to be polished are introduced into the container from above in the direction of a tangent to the polishing roller.
  • the cutlery pieces are attached, in a known way, to a common reciprocating work frame.
  • the polishing mixture is fed to the polishing roller in one of two ways: in one version the lower portion of the polishing roller dips into a bath of polishing liquid; in the other version the liquid is fed to the upper portion of the polishing roller by a pump and conduit system.
  • the machine user himself can easily and inexpensively produce a suitable polishing mixture, and the mixture, where desired, is easy to regenerate.
  • FIG. 1 shows, in an elevational cross-section, a first embodiment of the invention where the two parallel polishing rollers dip into a bath of polishing liquid;
  • FIG. 2 shows, in a comparable elevational crosssection, a second embodiment of the invention, where the polishing mixture is fed to the polishing rollers by a circulatory system;
  • FIG. 3 shows in enlarged detail a modification of the embodiment of FIG. 2.
  • FIGS. 1 and 2 have in common two oppositely rotating, parallel polishing rollers 1 and 2, arranged horizontally inside substantially closed containers 3 which hold a polishing liquid 9.
  • the container cover 4 includes a narrow longitudinal opening 5 corresponding to the length of the rollers, to allow the introduction of a plurality of cutlery pieces 6 between the rollers 1 and 2.
  • the cutlery pieces 6 are held in a work frame 23 by known means.
  • the work frame 23 is driven to give to the cutlery pieces a reciprocating motion in the direction of arrow 7.
  • Each polishing roller engages one side and/or flank of the cutlery pieces, while the latter reciprocate in their axial direction over the desired length to be polished.
  • the arrangement with two polishing rollers facing one another has the double advantage that a large part of the polishing mixture ejected from one roller is caught by the opposite roller, and that the polishing pressures necessary between the workpieces 6 and the rollers 1 and 2 are equalized.
  • the direction of rotation of the polishing rollers is clockwise for roller 1 and counter-clockwise for roller 2, so that no polishing liquid is ejected from the opening 5.
  • the cover 4 may also include oppositely arranged longitudinal sealing lips 8 which may be in the form of flat brushes.
  • the polishing liquid is fed to the polishing rollers 1 and 2 by the fact that the level of the polishing liquid 9 inside the container 3 is such that the rollers dip into the polishing liquid with the lower portion of their periphery.
  • the wipers 10 need not contact the polishing rollers.
  • the embodiment of FIG. 1 further includes an agitator inside the container, the agitator including, for example, a rotating agitator blade 11 which is driven by a gear motor 12.
  • the polishing liquid in the container 3 is maintained in continuous agitation thereby preventing the polishing abrasive from forming deposits on the container bottom, while simultaneously improving the cooling process through better heat conduction to the container walls.
  • the agitation provided by the rollers dipping into the liquid may be sufficient. It is also suggested that any dead corners, sharp angles and recesses in the container contour be avoided to minimize the formation of abrasive deposits.
  • the polishing rollers l and 2 rotate freely without dipping into the liquid 9 inside container 3.
  • the liquid is drawn from the container 3 at its lowest point and is forcibly circulated by means of a pump 13 through the horizontal pipe 14 and the vertical pipe 15 to a branch 16 above the container.
  • the polishing liquid reaches two valves 17 and 18, operable preferably independently of each other, and, via the feed pipes 19 and 20, it is discharged through the nozzles 21 and 22.
  • These nozzles are so arranged that the polishing liquid flows onto the polishing rollers 1 and 2 immediately above the point of contact with the workpieces 6 and in a continuous stream as large as the working length of the polishing rollers.
  • the circulation pump 13 though shown schematically as a centrifugal pump, is preferably of the squeeze-pump-type, using a flexible hose and squeeze rollers, similar to devices employed in the pumping of mixed concrete. This type of pump promises a comparably great longevity in spite of the abrasiveness of the polishing liquid.
  • the generously flowing, low-viscosity polishing liquid guarantees excellent cooling of the work area. Nevertheless, no ejection of polishing liquid to the outside takes place, thanks to the design configuration suggested by the invention.
  • the container 3 of the embodiment of FIG. 2 is shown to have tapered walls in the shape of a funnel, the purpose of this shape being the need for continuous circulation of the liquid at all places inside the container 3. Under certain circumstances, it may be advisable to add an agitator even in the embodiment of FIG. 2.
  • a separator in the circulatory system shown in FIG. 2. Such a separator would be used to remove from the used polishing mixture that portion of the polishing base material whose particle size has become too small. To the separator may be added a device whereby corresponding amounts of new polishing base material may be added automatically to the circulatory system.
  • a machine for polishing workpieces such as cutlery and other metal articles comprising in combination:
  • At least one polishing roller arranged for rotation inside the container, including a drive means therefor;
  • the polishing mixture including a low-viscosity carrier liquid and a particulate abrasive material dispersed in it through agitation;
  • two oppositely rotating horizontal polishing rollers are arranged in parallel with one another in the upper portion of the container so that the two rollers face one another in the work area, ,the restricted opening being in the top of the container.
  • a flexible seal extending across the restricted open' ing, the seal including oppositely oriented flexible brush members.
  • conduit means are of negligeable cross-sectional discontinuity to maintain a substantially continuous flow speed therein, thereby preventing clogging and deposit formation in the circulatory system.
  • conduit means of the circulatory system include an axial conduit in the center of the polishing roller and radial outlets leading to the roller periphery.
  • conduit means include a downwardly oriented nozzle, the polishing liquid being fed through the nozzle to the work area.
  • the pumping means includes a squeeze pump and a drive therefor, the squeeze pump comprising a flexible hose and cooperating squeeze rollers.
  • the agitating means for the polishing mixture includes an agitator and a drive therefor, the agitator being arranged in the bottom portion of the container.

Landscapes

  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
US00144788A 1970-05-19 1971-05-19 Cutlery polishing machine Expired - Lifetime US3761984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702024379 DE2024379C3 (de) 1970-05-19 Einrichtung zum gleichzeitigen Polieren einer größeren Anzahl von Besteck- oder ähnlichen Metallkleinteilen

Publications (1)

Publication Number Publication Date
US3761984A true US3761984A (en) 1973-10-02

Family

ID=5771463

Family Applications (1)

Application Number Title Priority Date Filing Date
US00144788A Expired - Lifetime US3761984A (en) 1970-05-19 1971-05-19 Cutlery polishing machine

Country Status (5)

Country Link
US (1) US3761984A (enrdf_load_stackoverflow)
JP (1) JPS5211479B1 (enrdf_load_stackoverflow)
ES (1) ES391340A1 (enrdf_load_stackoverflow)
FR (1) FR2090128B1 (enrdf_load_stackoverflow)
GB (1) GB1289914A (enrdf_load_stackoverflow)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872534A (en) * 1973-11-15 1975-03-25 Wittek Golf Range Supply Co In Golf club head washing apparatus
US4087878A (en) * 1976-03-12 1978-05-09 Grieshaber Herman R Tool cleaning device
US4104758A (en) * 1977-04-04 1978-08-08 Stotler James L Credit card washing device
US4218799A (en) * 1978-03-07 1980-08-26 Alison M. Blight Wash-out apparatus for printing machines
US4288882A (en) * 1979-01-17 1981-09-15 Olympus Optical Co., Ltd. Endoscope sheath cleaning device
US4394785A (en) * 1981-03-06 1983-07-26 Elvo Elektronik Ag Apparatus for cleaning soldering iron bits
US4704760A (en) * 1986-05-16 1987-11-10 Grieshaber Herman R Surgical blade cleaning device
US4752983A (en) * 1987-07-09 1988-06-28 Grieshaber Herman R Surgical instrument cleaning device
US5117528A (en) * 1989-04-06 1992-06-02 Nippon Telegraph And Telephone Corporation Optical connector cleaner
US5209244A (en) * 1990-10-02 1993-05-11 Oscar Mayer Foods Corporation Method of cleaning metal mesh gloves
US5220703A (en) * 1989-04-06 1993-06-22 Nippon Telegraph & Telephone Co. Combination of optical connector cleaner and holder jig
US6070284A (en) * 1998-02-04 2000-06-06 Silikinetic Technology, Inc. Wafer cleaning method and system
US6098229A (en) * 1998-09-17 2000-08-08 Ward; William Kevin Grill cleaning apparatus
US6131230A (en) * 1999-03-15 2000-10-17 Manabat; Gregorio S. Portable razor cleaning and holding apparatus
US6145147A (en) * 1997-10-21 2000-11-14 Frecska; Tamas S. Apparatus for cleaning
US6466723B2 (en) 2000-03-03 2002-10-15 Ntt Advanced Technology Corporation Cleaning tool for optical fiber connectors
US6681437B1 (en) 1999-04-30 2004-01-27 Ntt Advanced Technology Corporation Cleaning tool for optical fiber connectors
US20100251494A1 (en) * 2000-11-01 2010-10-07 Brackett Ted J Hairbrush, Comb and Makeup Brush Cleaning Device
EP1439769A4 (en) * 2001-11-01 2010-12-22 Dynamic Cleaning Technologies BRUSH CLEANING DEVICE
US20130068251A1 (en) * 2007-01-11 2013-03-21 Resmed Limited Fastenable conduit for breathable gas delivery
US10293382B2 (en) * 2017-07-10 2019-05-21 Clean Scissors LLC Plant trimming shear cleaner and sharpener
US20220280982A1 (en) * 2021-03-02 2022-09-08 Mazor Robotics Ltd. Tool cleaning station

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1274573A (en) * 1916-07-26 1918-08-06 Ernest W Mellien Comb-cleaner.
US2082991A (en) * 1935-05-31 1937-06-08 Turco Generoso Device for cleansing and sterilizing combs
US2202516A (en) * 1939-12-02 1940-05-28 John J Calleo Sanitary comb cleaning device
US2228443A (en) * 1939-05-15 1941-01-14 John A Costa Device for cleaning combs
US2704374A (en) * 1954-09-14 1955-03-22 Walter J Paxton Hair comb cleaner
US3081471A (en) * 1962-07-16 1963-03-19 Robert E Newell Hand washing machine
US3464080A (en) * 1967-08-21 1969-09-02 Beatrice Certo Eyeglass cleaner
US3643277A (en) * 1968-07-12 1972-02-22 Felix Durst Device for cleaning venetian blind slats

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1274573A (en) * 1916-07-26 1918-08-06 Ernest W Mellien Comb-cleaner.
US2082991A (en) * 1935-05-31 1937-06-08 Turco Generoso Device for cleansing and sterilizing combs
US2228443A (en) * 1939-05-15 1941-01-14 John A Costa Device for cleaning combs
US2202516A (en) * 1939-12-02 1940-05-28 John J Calleo Sanitary comb cleaning device
US2704374A (en) * 1954-09-14 1955-03-22 Walter J Paxton Hair comb cleaner
US3081471A (en) * 1962-07-16 1963-03-19 Robert E Newell Hand washing machine
US3464080A (en) * 1967-08-21 1969-09-02 Beatrice Certo Eyeglass cleaner
US3643277A (en) * 1968-07-12 1972-02-22 Felix Durst Device for cleaning venetian blind slats

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872534A (en) * 1973-11-15 1975-03-25 Wittek Golf Range Supply Co In Golf club head washing apparatus
US4087878A (en) * 1976-03-12 1978-05-09 Grieshaber Herman R Tool cleaning device
US4104758A (en) * 1977-04-04 1978-08-08 Stotler James L Credit card washing device
US4218799A (en) * 1978-03-07 1980-08-26 Alison M. Blight Wash-out apparatus for printing machines
US4288882A (en) * 1979-01-17 1981-09-15 Olympus Optical Co., Ltd. Endoscope sheath cleaning device
US4394785A (en) * 1981-03-06 1983-07-26 Elvo Elektronik Ag Apparatus for cleaning soldering iron bits
US4704760A (en) * 1986-05-16 1987-11-10 Grieshaber Herman R Surgical blade cleaning device
US4752983A (en) * 1987-07-09 1988-06-28 Grieshaber Herman R Surgical instrument cleaning device
US5117528A (en) * 1989-04-06 1992-06-02 Nippon Telegraph And Telephone Corporation Optical connector cleaner
US5220703A (en) * 1989-04-06 1993-06-22 Nippon Telegraph & Telephone Co. Combination of optical connector cleaner and holder jig
US5209244A (en) * 1990-10-02 1993-05-11 Oscar Mayer Foods Corporation Method of cleaning metal mesh gloves
US6145147A (en) * 1997-10-21 2000-11-14 Frecska; Tamas S. Apparatus for cleaning
US6070284A (en) * 1998-02-04 2000-06-06 Silikinetic Technology, Inc. Wafer cleaning method and system
US6098229A (en) * 1998-09-17 2000-08-08 Ward; William Kevin Grill cleaning apparatus
US6131230A (en) * 1999-03-15 2000-10-17 Manabat; Gregorio S. Portable razor cleaning and holding apparatus
US6681437B1 (en) 1999-04-30 2004-01-27 Ntt Advanced Technology Corporation Cleaning tool for optical fiber connectors
US6466723B2 (en) 2000-03-03 2002-10-15 Ntt Advanced Technology Corporation Cleaning tool for optical fiber connectors
US20100251494A1 (en) * 2000-11-01 2010-10-07 Brackett Ted J Hairbrush, Comb and Makeup Brush Cleaning Device
US8185994B2 (en) 2000-11-01 2012-05-29 Dynamic Cleaning Technologies Llc Hairbrush, comb and makeup brush cleaning device
EP1439769A4 (en) * 2001-11-01 2010-12-22 Dynamic Cleaning Technologies BRUSH CLEANING DEVICE
US20130068251A1 (en) * 2007-01-11 2013-03-21 Resmed Limited Fastenable conduit for breathable gas delivery
US9108227B2 (en) * 2007-01-11 2015-08-18 Redmed Limited Fastenable conduit for breathable gas delivery
US10293382B2 (en) * 2017-07-10 2019-05-21 Clean Scissors LLC Plant trimming shear cleaner and sharpener
US20220280982A1 (en) * 2021-03-02 2022-09-08 Mazor Robotics Ltd. Tool cleaning station

Also Published As

Publication number Publication date
GB1289914A (enrdf_load_stackoverflow) 1972-09-20
DE2024379A1 (de) 1972-07-20
JPS5211479B1 (enrdf_load_stackoverflow) 1977-03-31
FR2090128B1 (enrdf_load_stackoverflow) 1977-03-18
FR2090128A1 (enrdf_load_stackoverflow) 1972-01-14
DE2024379B2 (de) 1975-07-10
ES391340A1 (es) 1973-07-01

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