US3793076A - Handling working pieces in liquids in dental technology - Google Patents

Handling working pieces in liquids in dental technology Download PDF

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Publication number
US3793076A
US3793076A US00291166A US3793076DA US3793076A US 3793076 A US3793076 A US 3793076A US 00291166 A US00291166 A US 00291166A US 3793076D A US3793076D A US 3793076DA US 3793076 A US3793076 A US 3793076A
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US
United States
Prior art keywords
container
pickling
cover
workpieces
bath
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Expired - Lifetime
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US00291166A
Inventor
H Lea
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DEUTSCHE GOLD U SILBER SCHEIDEANSTALT DT
Evonik Operations GmbH
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Degussa GmbH
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Priority claimed from DE19712158637 external-priority patent/DE2158637C3/en
Application filed by Degussa GmbH filed Critical Degussa GmbH
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/20—Methods or devices for soldering, casting, moulding or melting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material

Definitions

  • the vvorkpieces are arranged 1n 134/105, 134/135, 134/143, 156/345 a removable contalner swmglngly rnounted on the 51 1111.01 B08b 3/08 the bath aPPaaFUS- P' avmds messty [58] Field of Search 134/2 3, 25 R, 41, 28 31 of using material handling equlpment such as forceps and tongs.
  • the workpieces for the pickling are placed by hand in the container mounted in swingable manner on the cover of the apparatus and together with the container are lowered into the pickling liquid. Thereupon the cover of the apparatus joined to the swingable container returns in guided manner to its closed position and closes the apparatus so tightly with its sealing ring during the pickling process that no vapor of the pickling fluid can escape outside.
  • the user raises the cover of the apparatus high whereby in guided manner, the workpieces arranged in the swingable container are removed from the pickling liquid.
  • the pickling fluid which is found in the container in' the pickling process flows back through openings on the bottom side of the container in the apparatus.
  • the user turns the cover of the apparatus 180 so that the bottom side of the cover is arranged below the container with the workpieces.
  • the bottom side of the cover serves as a collecting vessel for residues of the pickling fluid still dropping from the container.
  • the user goes with the workpieces to a water tap with a discharge basin. He swings the cover about over the discharge basin with a hand motion and can now cleanse the pickled workpieces in the flowing water jet from remaining residues of pickling liquid,
  • a further possibility in rinsing the workpieces is that the user of the apparatus instead of employing the flowing water jet employs a prepared vessel containing water. In this case he swings the cover of the apparatus about by a hand motion after which he can likewise bririg about an appropriate rinsing by alternating immersion in and raising of the container above the water bath.
  • the now pickled and cleansed workpieces can be withdrawn from the container with the fingers, again without utilization of assisting apparatus such as tongs or forceps and the further working can be carried out.
  • the flat top side of the cover makes possible assembly at the working place so that both hands are free.
  • a further characteristic of the invention is that the pickling fluid condensing on the relatively cool bottom side of the cover is returned again into the deoxidation vessel.
  • FIGURE of the drawing is a crosssectional view of an apparatus for carrying out the invention.
  • a container 1 for a bath e.g., a pickling bath consisting of sulfuric acid or another pickling agent.
  • the container is heated by-a heater 7. Inside the bath container 1 there is situated another container 2 which contains workpieces, e.g., dental tools.
  • the container 2 is swingingly connected with the cover 3 by support 4.
  • the container 2 in its bottom has openings 5 through which it is guaranteed that the pickling fluid can flow around the workpieces to be treated.
  • the cover is raised up whereupon simultaneously the container 2 is removed from the pickling fluid. Since the container 2 is swingably mounted on the supports 4 the person undertaking the working process can bring the treated workpieces in the range of his sight by swinging the container 2 and thereby control whether the surface properties of the treated pieces are unobjectionable.
  • a process of deoxidizing gold or silver on dental workpieces comprising providing a liquid pickling bath in a first container, providing a cover suitable for closing said first container, placing said workpieces in a second smaller container swingably attached to said cover, moving said second container into said first container so that the workpieces are in contact with said pickling bath and the cover closes said first container and thereafter raising the cover and removing said second container from the pickling bath, turning the cover of the first container sufficiently, after the second container is removed from the pickling bath, that the bottom of the cover is below said second container, and
  • a process according to claim 1 comprising the subsequent step of rinsing the workpieces in said second container with water.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Work pieces are treated in pickling liquids especially in dental technology and gold and silver forging for deoxidation purposes. The workpieces are arranged in a removable container swingingly mounted on the cover of the bath apparatus. This avoids the necessity of using material handling equipment such as forceps and tongs.

Description

United States Patent Lea Feb. 19, 1974 HANDLING WORKING PIECES IN LIQUIDS [56] References Cited IN DENTAL CHNOLOGY UNITED STATES PATENTS [75] Inventor: Hans Lea, Frankfurt, Germany 3,121,438 2/1964 Kennedy 134/ 135 1,979,241 11/1934 Albanese 91/63 Asslgneel Deulsche Gold-Ind 494,191 3/1893 La Porte 134/85 silber-scheideanstalt Vormals, 2,162,846 5/1939 Kirchner 148/8 Frankfurt, Germany Sept. 22 Primary Examiner-Morris Assistant ExaminerDale Lovercheck PP N03 291,166 Attorney, Agent, or Firm-Cushman, Darby &
Cushman [30] Foreign Application Priority Data Nov. 26, 1971 Germany 2158637 [57] F F Work pieces are treated 1n prcklmg-hqurds especlally 52 us. 01. 134/25 R, 134/3, 134/25 R, in dental echmbgy and and silver fmging 134/28, 134/31, 4 41 134/85, 134/92, deoxidation purposes. The vvorkpieces are arranged 1n 134/105, 134/135, 134/143, 156/345 a removable contalner swmglngly rnounted on the 51 1111.01 B08b 3/08 the bath aPPaaFUS- P' avmds messty [58] Field of Search 134/2 3, 25 R, 41, 28 31 of using material handling equlpment such as forceps and tongs.
4 Claims, 1 Drawing Figure HANDLING WORKING PIECES IN LIQUIDS IN DENTAL TECHNOLOGY in dental technology and in gold and silver forging technology it is necessary to deoxidize oxidized workpieces of base metal containing noble metal alloys by casting, brazing or annealing. Generally, for this purpose there are used simple ceramic containers, for example porcelain casseroles, which are filled with a suitable picklingliquid. The required heating of the pickling liquid takes place over the flame of a bunsen burner or on an electric hotplate. After the pickling the workpiece must be taken out of the hot pickling liquid with tongs or forceps. In this procedure there is the danger of the formation of a galvanic cell which leads to a copper deposit on the workpiece. Remnants of such copper deposit can, for example, in noble metal working in dental technology bring about disagreeable discolorations in the mouth of the patient. A further disadvantage of this process is the escape of acid vapors injurious to health and corrosive to the iron tools.
It has now been found that the disadvantages of the known processes can be avoided by having the deoxidation take place in a closed apparatus containing the pickling liquid in which the work pieces to be pickled are arranged in a removable container which is fastened in swinging fashion to the cover of the apparatus. This construction permits the user to completely eliminate the additional material handling equipment such as forceps, tongs and the like whose disadvantages are described above.
The workpieces for the pickling are placed by hand in the container mounted in swingable manner on the cover of the apparatus and together with the container are lowered into the pickling liquid. Thereupon the cover of the apparatus joined to the swingable container returns in guided manner to its closed position and closes the apparatus so tightly with its sealing ring during the pickling process that no vapor of the pickling fluid can escape outside.
After the end of the pickling process, the user raises the cover of the apparatus high whereby in guided manner, the workpieces arranged in the swingable container are removed from the pickling liquid. During these processes the pickling fluid which is found in the container in' the pickling process flows back through openings on the bottom side of the container in the apparatus. By a hand motion the user turns the cover of the apparatus 180 so that the bottom side of the cover is arranged below the container with the workpieces. In this situation the bottom side of the cover serves as a collecting vessel for residues of the pickling fluid still dropping from the container. In this position the user goes with the workpieces to a water tap with a discharge basin. He swings the cover about over the discharge basin with a hand motion and can now cleanse the pickled workpieces in the flowing water jet from remaining residues of pickling liquid,
A further possibility in rinsing the workpieces is that the user of the apparatus instead of employing the flowing water jet employs a prepared vessel containing water. In this case he swings the cover of the apparatus about by a hand motion after which he can likewise bririg about an appropriate rinsing by alternating immersion in and raising of the container above the water bath.
In both cases after the rinsing process for the return of the workpieces to the working place the cover of the apparatus is so turned by a hand motion that its bottom side comes to rest under the container with the workpieces. Thus, the water dropping from the container or from the workpieces is caught on the bottom side of the cover.
At the working place the now pickled and cleansed workpieces can be withdrawn from the container with the fingers, again without utilization of assisting apparatus such as tongs or forceps and the further working can be carried out. The flat top side of the cover makes possible assembly at the working place so that both hands are free.
A further characteristic of the invention is that the pickling fluid condensing on the relatively cool bottom side of the cover is returned again into the deoxidation vessel.
The single FIGURE of the drawing is a crosssectional view of an apparatus for carrying out the invention.
Referring more specifically to the drawings there is provided a container 1 for a bath, e.g., a pickling bath consisting of sulfuric acid or another pickling agent.
The container is heated by-a heater 7. Inside the bath container 1 there is situated another container 2 which contains workpieces, e.g., dental tools. The container 2 is swingingly connected with the cover 3 by support 4. The container 2 in its bottom has openings 5 through which it is guaranteed that the pickling fluid can flow around the workpieces to be treated.
After the pickling the cover is raised up whereupon simultaneously the container 2 is removed from the pickling fluid. Since the container 2 is swingably mounted on the supports 4 the person undertaking the working process can bring the treated workpieces in the range of his sight by swinging the container 2 and thereby control whether the surface properties of the treated pieces are unobjectionable.
In the pickling process in the heated pickling bath there takes place an evaporation of the liquid. It is undesired that this vapor. reach the working space. For this reason it is suitable to condense this vapor on the relatively cool surface of the bottom of the cover and return it again into the bath container 1. Therefore, there is provided an additional conical inner cover 6 on whose surface a substantial part of the evaporated liquid condenses and then flows back again into the bath container 1. A supplementation of the pickling liquid is practically not necessary because the vapor developed condenses again in the apparatus and is returned into the bath container 1.
What is claimedis: I
1. A process of deoxidizing gold or silver on dental workpieces comprising providing a liquid pickling bath in a first container, providing a cover suitable for closing said first container, placing said workpieces in a second smaller container swingably attached to said cover, moving said second container into said first container so that the workpieces are in contact with said pickling bath and the cover closes said first container and thereafter raising the cover and removing said second container from the pickling bath, turning the cover of the first container sufficiently, after the second container is removed from the pickling bath, that the bottom of the cover is below said second container, and
3. A process according to claim 1 wherein the bottom side of the cover is conical and said process comprises condensing vapors from said pickling bath on said conical bottom side and returning them to the bath.
4. A process according to claim 1 comprising the subsequent step of rinsing the workpieces in said second container with water.

Claims (3)

  1. 2. A process according to claim 1 wherein openings are present in the bottom portion of said second container, said opening being smaller than the smallest dimension of said workpieces and said process inclUdes passing pickling liquid through said openings from the bath into the second container and back into the bath.
  2. 3. A process according to claim 1 wherein the bottom side of the cover is conical and said process comprises condensing vapors from said pickling bath on said conical bottom side and returning them to the bath.
  3. 4. A process according to claim 1 comprising the subsequent step of rinsing the workpieces in said second container with water.
US00291166A 1971-11-26 1972-09-22 Handling working pieces in liquids in dental technology Expired - Lifetime US3793076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712158637 DE2158637C3 (en) 1971-11-26 Device for treating workpieces in liquids, in particular in dental technology

Publications (1)

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US3793076A true US3793076A (en) 1974-02-19

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US00291166A Expired - Lifetime US3793076A (en) 1971-11-26 1972-09-22 Handling working pieces in liquids in dental technology
US410550A Expired - Lifetime US3874395A (en) 1971-11-26 1973-10-29 Handling working pieces in liquids in dental technology

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US (2) US3793076A (en)
JP (1) JPS5627597B2 (en)
AT (1) AT353401B (en)
AU (1) AU467267B2 (en)
BE (1) BE791832A (en)
BR (1) BR7208287D0 (en)
CA (1) CA963780A (en)
CH (1) CH572357A5 (en)
ES (1) ES407294A1 (en)
FR (1) FR2155750A7 (en)
GB (1) GB1396598A (en)
IT (1) IT974967B (en)
NL (1) NL7213060A (en)
SE (1) SE379561B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058362A (en) * 1974-01-03 1977-11-15 Minnesota Mining And Manufacturing Company Protection of metals or metal containing articles
US4238186A (en) * 1978-12-04 1980-12-09 Western Electric Company, Inc. Methods and apparatus for heating articles selectively exposed to a generated vapor through a volume controllable vapor barrier
US4938840A (en) * 1989-04-19 1990-07-03 Schaechter Friedrich Uniform treatment of large quantities of small parts
US5075982A (en) * 1990-09-25 1991-12-31 Allied-Signal Inc. Open top defluxer with improved solvent vapor recovery
CN105499191A (en) * 2013-08-30 2016-04-20 重庆润泽医药有限公司 Electric coagulation forcep rinsing and wiping support
CN111940391A (en) * 2020-09-28 2020-11-17 公爱梅 Instrument cleaning device for children dental department

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544710Y2 (en) * 1986-12-26 1993-11-12
US6216498B1 (en) * 1999-03-31 2001-04-17 Maytag Corporation Sealed top cover and lid for washing machine
US6578590B2 (en) * 2001-03-21 2003-06-17 Danny Leblond Rotative cleaning and sanitizing device
JP4429106B2 (en) * 2004-07-28 2010-03-10 大日本スクリーン製造株式会社 Substrate etching equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US494191A (en) * 1893-03-28 Kitchen-table
US1979241A (en) * 1933-06-14 1934-11-06 Harry M Albanese Paintbrush preserver
US2162846A (en) * 1938-01-15 1939-06-20 Alfred M Kirchner Pickling
US3121438A (en) * 1961-01-16 1964-02-18 Union Carbide Corp Open head container and cover therefor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1479236A (en) * 1919-07-23 1924-01-01 Jay A Heidbrink Sterilizer
US1884181A (en) * 1924-07-18 1932-10-25 Eric Osterberg Dish washing machine
US2572983A (en) * 1945-01-13 1951-10-30 Triumph Dishwashers Ltd Impeller assembly for dishwashing machines
US2806123A (en) * 1949-09-12 1957-09-10 Jr Edmund A Steinbock Sterilizer
US3041212A (en) * 1958-10-27 1962-06-26 Welded Products Company Egg washing apparatus and method
JPS4024377Y1 (en) * 1964-02-17 1965-08-19
US3444868A (en) * 1966-09-22 1969-05-20 Barnes Hind Int Lens washing machine
US3430553A (en) * 1968-02-16 1969-03-04 Carmelo V Di Pietro Deep fat fryer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US494191A (en) * 1893-03-28 Kitchen-table
US1979241A (en) * 1933-06-14 1934-11-06 Harry M Albanese Paintbrush preserver
US2162846A (en) * 1938-01-15 1939-06-20 Alfred M Kirchner Pickling
US3121438A (en) * 1961-01-16 1964-02-18 Union Carbide Corp Open head container and cover therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058362A (en) * 1974-01-03 1977-11-15 Minnesota Mining And Manufacturing Company Protection of metals or metal containing articles
US4238186A (en) * 1978-12-04 1980-12-09 Western Electric Company, Inc. Methods and apparatus for heating articles selectively exposed to a generated vapor through a volume controllable vapor barrier
US4938840A (en) * 1989-04-19 1990-07-03 Schaechter Friedrich Uniform treatment of large quantities of small parts
US5075982A (en) * 1990-09-25 1991-12-31 Allied-Signal Inc. Open top defluxer with improved solvent vapor recovery
CN105499191A (en) * 2013-08-30 2016-04-20 重庆润泽医药有限公司 Electric coagulation forcep rinsing and wiping support
CN111940391A (en) * 2020-09-28 2020-11-17 公爱梅 Instrument cleaning device for children dental department

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Publication number Publication date
US3874395A (en) 1975-04-01
NL7213060A (en) 1973-05-29
IT974967B (en) 1974-07-10
AT353401B (en) 1979-11-12
CA963780A (en) 1975-03-04
JPS5627597B2 (en) 1981-06-25
ATA1002872A (en) 1979-04-15
AU4881372A (en) 1974-05-16
DE2158637A1 (en) 1972-12-21
SE379561B (en) 1975-10-13
BR7208287D0 (en) 1973-10-25
GB1396598A (en) 1975-06-04
DE2158637B2 (en) 1977-02-17
AU467267B2 (en) 1975-11-27
BE791832A (en) 1973-03-16
FR2155750A7 (en) 1973-05-18
ES407294A1 (en) 1975-10-16
JPS4863594A (en) 1973-09-04
CH572357A5 (en) 1976-02-13

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