US2890160A - Fixture suspending phonograph record blank - Google Patents
Fixture suspending phonograph record blank Download PDFInfo
- Publication number
- US2890160A US2890160A US543104A US54310455A US2890160A US 2890160 A US2890160 A US 2890160A US 543104 A US543104 A US 543104A US 54310455 A US54310455 A US 54310455A US 2890160 A US2890160 A US 2890160A
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- US
- United States
- Prior art keywords
- blank
- matrix
- record blank
- bolt
- record
- 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
- 239000008151 electrolyte solution Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 2
- 238000009877 rendering Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 description 20
- 238000004070 electrodeposition Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical compound COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
Definitions
- This invention relates to fixtures for phonograph record wax blanks or matrices for suspending them during electro-deposition in an electrolyte solution in such manner that the side not to be coated of the blank or matrix is shielded in a liquid-tight manner.
- the aforesaid method of attachment suifers from a limitation in that the electrolyte solution penetrates through a central hole of the blank or matrix so that deposition of the electrolyte solution also occurs at the edges of the hole and at the side not to be coated in the immediate vicinity of the hole.
- the aforesaid hole requires to be bored out. It has been proposed to seal said hole by means of a rubber stop, but this did not yield satisfactory results.
- the present invention has for its object to mitigate said disadvantages.
- the blank or the matrix has a central conical hole in which a bolt having a conical head is tightened by means of a nut.
- This attachment is mechanically suflicient to transmit rotation from the bar to the blank or the matrix.
- the hole of the blank or matrix is closed in a liquid-tight manner by the conical head of the bolt, thus avoiding undue deposits. It has been found that the bolts used in accordance with the invention can be used many times, thus obtaining a saving in cost. According to the conventional method of attachment the strips were often damaged on loosening the blank or the matrix so that they had to be replaced.
- liquid-tight seal of the hole of the matrix or blank can be improved by providing a ring with a conical hole between the blank or matrix and the nut, which yields an additional closure over the conical head.
- the invention permits in a very simple mariner of centering the grooves of the blank or the matrix to be also imparted to the electro-formed print.
- the head of the bolt comprises a central point which causes a cavity in the print and permits orientation for centering the print.
- FIG. 1 shows the attachment of a record wax blank or matrix to a bar
- Fig. 2 is a detail view on a larger scale of the attachment shown in Fig. 1.
- a sound record blank or matrix 1 has a conical hole 2 in which a bolt 3 with a screw thread 4 and a conical head 5 is tightened by means of a nut 6:
- a ring 7 having a conical hole 8 is arranged between the nut 6 and the matrix 1.
- the head 5 of the bolt 3 is provided with a central point 9.
- the upper side of the matrix 1 is covered with soft rubber 10 which in turn is shielded by a plate 11 at its upper side.
- the bolt 3 is secured to a suspension bar 12 comprising a hard rubber trunk 13 at its lower end.
- the rubber covering 10, the plate 11 and the trunk 13 yield a liquid-tight closure at the upper side of the matrix 1.
- the conical head 5 also closes the hole 2 in a liquid-tight manner.
- a device suspending phonograph record blanks in an electrolytic solution whereby one surface of the record blank not to be coated is shielded from said electrolytic solution in a liquid tight manner comprising; a record blank having a central, conical-shaped hole, a screwthreaded bolt having a head correspondingly shaped to said central, conical-shaped hole and seated therein, the exposed surface of said head being generally planar and flush with the other surface of said record blank, and a nut rotatably engaging the screw threads of said bolt and abutting the one surface of said record blank not to be coated by said electrolytic solution, said nut rendering said one surface free from said electrolytic solution.
- a device suspending phonograph record blanks as claimed in claim 1 further comprising a ring arrangement located between said one surface and said nut.
- a device for suspending phonograph record blanks as claimed in claim 1 further comprising a centrally located projection extending from the plane surface of the head of said screw-threaded bolt for the centering and proper orientation of an electro-formed record.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
June 9, .1959
B. J. HUNTING ETAL' 2,890,160
FIXTURE SUSPENDING PHONOGRAPH RECORD BLANK Filed Oct. '27, 1955 INVENTORS BERNARDUS JACOBUS HUNTING ANNE RINIEMA HENDRIK OVEREEM AGE T United States Patent FIXTURE SUSPENDING PHONOGRAPH RECORD BLANK Bernardus Jacobus Hunting and Anne Rinzema, Baarn, Netherlands, and Hendrik Overeem, deceased, late of Baarn, Netherlands, by Joris Daniel Heijligers, executor, Baarn, Netherlands, assignors, by mesne assignments, to North American Philips Company, Inc, New York, N.Y., a corporation of Delaware Application October 27, 1955, Serial No. 543,104
Claims priority, application Netherlands November 8, 1954 3 Claims. (Cl. 204-281) This invention relates to fixtures for phonograph record wax blanks or matrices for suspending them during electro-deposition in an electrolyte solution in such manner that the side not to be coated of the blank or matrix is shielded in a liquid-tight manner.
It is necessary to secure the aforesaid blanks or matrices for electro-deposition to a bar or the like, since they must be freely suspended in an electrolyte solution during electro-deposition. Moreover, it is often desirable that the blanks or the matrices should rotate in the electrolyte solution. By means of the bar secured to the blank or the matrix said rotation can be imparted to it in a simple manner.
In a conventional method of attachment, the ends of a bent brass strip are soldered to the blank or to the matrix at both sides of the center respectively. Suspension may be effected by means of a screw bolt which is secured to the central part of the strip.
The aforesaid method of attachment suifers from a limitation in that the electrolyte solution penetrates through a central hole of the blank or matrix so that deposition of the electrolyte solution also occurs at the edges of the hole and at the side not to be coated in the immediate vicinity of the hole. In order to strip the deposited layer from the blank or matrix the aforesaid hole requires to be bored out. It has been proposed to seal said hole by means of a rubber stop, but this did not yield satisfactory results.
Owing to unavoidable heating the aforesaid usual attachment gives rise to stresses at the central part of the blank or matrix, thus causing unevenesses which are also present in the electro-formed print.
Attempts have been made to improve the aforesaid r attachment by inserting a bolt in the central hole. In this case, however, it is necessary to cover the bolt with a. layer of tin at both sides of the blank or matrix, in order to prevent the electrolyte solution from penetrating between the bolt and the blank or matrix and depositing at the edges of the hole and in its immediate proximity on the side not to be coated, thus likewise causing unevenesses at the central part.
The present invention has for its object to mitigate said disadvantages.
In accordance with the invention, the blank or the matrix has a central conical hole in which a bolt having a conical head is tightened by means of a nut. This attachment is mechanically suflicient to transmit rotation from the bar to the blank or the matrix. Moreover, the hole of the blank or matrix is closed in a liquid-tight manner by the conical head of the bolt, thus avoiding undue deposits. It has been found that the bolts used in accordance with the invention can be used many times, thus obtaining a saving in cost. According to the conventional method of attachment the strips were often damaged on loosening the blank or the matrix so that they had to be replaced.
According to a further feature of the invention the liquid-tight seal of the hole of the matrix or blank can be improved by providing a ring with a conical hole between the blank or matrix and the nut, which yields an additional closure over the conical head.
Moreover, the invention permits in a very simple mariner of centering the grooves of the blank or the matrix to be also imparted to the electro-formed print. According to a further feature of the invention the head of the bolt comprises a central point which causes a cavity in the print and permits orientation for centering the print.
in order that the invention may be readily carried into effect, it will now be described with reference to the accompanying drawing, given by way of example, in which Fig. 1 shows the attachment of a record wax blank or matrix to a bar, and
Fig. 2 is a detail view on a larger scale of the attachment shown in Fig. 1.
A sound record blank or matrix 1 has a conical hole 2 in which a bolt 3 with a screw thread 4 and a conical head 5 is tightened by means of a nut 6: A ring 7 having a conical hole 8 is arranged between the nut 6 and the matrix 1. The head 5 of the bolt 3 is provided with a central point 9. The upper side of the matrix 1 is covered with soft rubber 10 which in turn is shielded by a plate 11 at its upper side. The bolt 3 is secured to a suspension bar 12 comprising a hard rubber trunk 13 at its lower end. The rubber covering 10, the plate 11 and the trunk 13 yield a liquid-tight closure at the upper side of the matrix 1. The conical head 5 also closes the hole 2 in a liquid-tight manner.
What is claimed is:
1. A device suspending phonograph record blanks in an electrolytic solution whereby one surface of the record blank not to be coated is shielded from said electrolytic solution in a liquid tight manner comprising; a record blank having a central, conical-shaped hole, a screwthreaded bolt having a head correspondingly shaped to said central, conical-shaped hole and seated therein, the exposed surface of said head being generally planar and flush with the other surface of said record blank, and a nut rotatably engaging the screw threads of said bolt and abutting the one surface of said record blank not to be coated by said electrolytic solution, said nut rendering said one surface free from said electrolytic solution.
2. A device suspending phonograph record blanks as claimed in claim 1 further comprising a ring arrangement located between said one surface and said nut.
3. A device for suspending phonograph record blanks as claimed in claim 1 further comprising a centrally located projection extending from the plane surface of the head of said screw-threaded bolt for the centering and proper orientation of an electro-formed record.
References Cited in the file of this patent UNITED STATES PATENTS FOREIGN PATENTS Italy Mar. 27, 1943
Claims (1)
1. A DEVICE SUSPENDING PHONOGRAPH RECORD BLANKS IN AN ELECTROLYTIC SOLUTION WHEREBY ONE SURFACE OF THE RECORD BLANK NOT TO BE COATED IS SHIELDED FROM SAID ELECTROLYTIC SOLUTION IN A LIQUID TIGHT MANNER COMPRISING; A RECORD BLANK HAVING A CENTRAL, CONICAL-SHAPED HOLE, A SCREWTHREADED BOLT HAVING A HEAD CORRESPONDINGLY SHAPED TO SAID CENTRAL, CONICAL-SHAPED HOLE AND SEATED THEREIN, THE EXPOSED SURFACE OF SAID HEAD BEING GENERALLY PLANAR AND FLUSH WITH THE OTHER SURFACE OF SAID RECORD BLANK, AND A NUT ROTATABLY ENGAGING THE SCREW THREADS OF SAID BOLT AND ABUTTING THE ONE SURFACE OF SAID RECORD BLANK NOT TO BE COATED BY SAID ELECTROLYTIC SOLUTION, SAID NUT RENDERING SAID ONE SURFACE FREE FROM SAID ELECTROLYTIC SOLUTION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2890160X | 1954-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2890160A true US2890160A (en) | 1959-06-09 |
Family
ID=19876193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US543104A Expired - Lifetime US2890160A (en) | 1954-11-08 | 1955-10-27 | Fixture suspending phonograph record blank |
Country Status (1)
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US (1) | US2890160A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3101311A (en) * | 1956-12-28 | 1963-08-20 | Chemionics Engineering Lab Inc | Energized anode assembly |
US3182016A (en) * | 1961-03-16 | 1965-05-04 | Texaco Inc | Hydrogenation process employing tubular catalytic structure |
US3261773A (en) * | 1959-01-12 | 1966-07-19 | Siemens Ag | Apparatus for doping and contacting semiconductor bodies |
US3414502A (en) * | 1965-01-18 | 1968-12-03 | Columbia Broadcasting Syst Inc | Electroplating apparatus for use with a phonograph record matrix |
US4259166A (en) * | 1980-03-31 | 1981-03-31 | Rca Corporation | Shield for plating substrate |
US4309265A (en) * | 1981-01-15 | 1982-01-05 | Rca Corporation | Cathode mask knob |
US4394341A (en) * | 1982-02-01 | 1983-07-19 | Rca Corporation | Method to center and separate electroformed replicas from a matrix |
US4445995A (en) * | 1983-02-28 | 1984-05-01 | Rca Corporation | Cathode head having improved seal means |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2181490A (en) * | 1936-07-09 | 1939-11-28 | Electrical Res Prod Inc | Electroplating apparatus |
US2501823A (en) * | 1947-05-16 | 1950-03-28 | Capitol Records | Record forming die |
US2751345A (en) * | 1955-05-24 | 1956-06-19 | Rca Corp | Electroplating rack |
-
1955
- 1955-10-27 US US543104A patent/US2890160A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2181490A (en) * | 1936-07-09 | 1939-11-28 | Electrical Res Prod Inc | Electroplating apparatus |
US2501823A (en) * | 1947-05-16 | 1950-03-28 | Capitol Records | Record forming die |
US2751345A (en) * | 1955-05-24 | 1956-06-19 | Rca Corp | Electroplating rack |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3101311A (en) * | 1956-12-28 | 1963-08-20 | Chemionics Engineering Lab Inc | Energized anode assembly |
US3261773A (en) * | 1959-01-12 | 1966-07-19 | Siemens Ag | Apparatus for doping and contacting semiconductor bodies |
US3182016A (en) * | 1961-03-16 | 1965-05-04 | Texaco Inc | Hydrogenation process employing tubular catalytic structure |
US3414502A (en) * | 1965-01-18 | 1968-12-03 | Columbia Broadcasting Syst Inc | Electroplating apparatus for use with a phonograph record matrix |
US4259166A (en) * | 1980-03-31 | 1981-03-31 | Rca Corporation | Shield for plating substrate |
US4309265A (en) * | 1981-01-15 | 1982-01-05 | Rca Corporation | Cathode mask knob |
US4394341A (en) * | 1982-02-01 | 1983-07-19 | Rca Corporation | Method to center and separate electroformed replicas from a matrix |
US4445995A (en) * | 1983-02-28 | 1984-05-01 | Rca Corporation | Cathode head having improved seal means |
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