US1859153A - Needle guide for records - Google Patents

Needle guide for records Download PDF

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Publication number
US1859153A
US1859153A US412185A US41218529A US1859153A US 1859153 A US1859153 A US 1859153A US 412185 A US412185 A US 412185A US 41218529 A US41218529 A US 41218529A US 1859153 A US1859153 A US 1859153A
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United States
Prior art keywords
record
groove
records
needle guide
stylus
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Expired - Lifetime
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US412185A
Inventor
John S O'leary
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Individual
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Priority to US412185A priority Critical patent/US1859153A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers

Definitions

  • This invention relates to improvements in phonographic records, and has as one of its objects to overcome one of the disadvantages attending the starting of a phonograph,
  • the present invention contemplates the provision of a phonograph record having means whereby the stylus will be automatically directed to the starting end of the record'groove even though it should be carelessly lowered onto the record.
  • Figure 2 is a detail sectional view, on an enlarged scale, on the line 2 2 of Figure 1 looking in the direction indicated by the arrows.
  • Figure 3 is a view showing how the guide grooves merge with one another and the sound groove.
  • the record disk is indicated by the numeral l and is provided upon one or both of its faces with the usual record groove which is indicated by the numeral 2.
  • the face of the record in which the record groove 2 is formed is likewise formed with a plurality of stylus guiding grooves which are indicated in the drawings by the numeral 3, and these grooves are preferably of slightly greater depth than the groove 2 and, from a point somewhat in advance of the starting point of the groove 2, the grooves 3 are so arranged that they converge, on arcuate lines, to the starting end of the groove 2V and mutually merge with one another near their point of juncture with the said end of the groove 2, so that when the stylus of the phonograph is lowered onto the record so that it will seat in any one of the grooves 3, and the record is rotated, the stylus will be guided accurately end thereof.
  • What I claim is z t ecord having, at the start- A phonographic r ing end of its sound record groove, a plurality of stylus guiding grooves located within the bounds of the record groove and in the same horizontal pla ing grooves leading to the said starting end ne therewith, said guideof the sound record groove on arcuate lines eccentric to the axi s of rotation of the said sound record groove, and having their inner ends merging with one another and with the said starting end of In testimony whe the sound record groove. reof I aiiiX my signature. JOHN S. OLEARY.

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  • Recording Or Reproducing By Magnetic Means (AREA)

Description

Patented May 17, 1932 JOHN S. OLEARY, OF PHILADELPHIA, PENNSYLVANIA NEEDLE GUIDE FOR .RECORDS Application led DecemberG, 1929. Serial No. 412,185.
This invention relates to improvements in phonographic records, and has as one of its objects to overcome one of the disadvantages attending the starting of a phonograph,
namely, that the stylus of the reproducer is sometimes unintentionally or accidentally dropped into the record groove of the disk at a point more or less in advance of the starting end of the groove, and therefore the present invention contemplates the provision of a phonograph record having means whereby the stylus will be automatically directed to the starting end of the record'groove even though it should be carelessly lowered onto the record.
This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in 2o the accompanying drawings, and speciiically pointed out in the appended claim.
In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure l is a plan view of a disk record embodying the invention.
Figure 2 is a detail sectional view, on an enlarged scale, on the line 2 2 of Figure 1 looking in the direction indicated by the arrows.
Figure 3 is a view showing how the guide grooves merge with one another and the sound groove.
The record disk is indicated by the numeral l and is provided upon one or both of its faces with the usual record groove which is indicated by the numeral 2.
In carrying out the invention, the face of the record in which the record groove 2 is formed, is likewise formed with a plurality of stylus guiding grooves which are indicated in the drawings by the numeral 3, and these grooves are preferably of slightly greater depth than the groove 2 and, from a point somewhat in advance of the starting point of the groove 2, the grooves 3 are so arranged that they converge, on arcuate lines, to the starting end of the groove 2V and mutually merge with one another near their point of juncture with the said end of the groove 2, so that when the stylus of the phonograph is lowered onto the record so that it will seat in any one of the grooves 3, and the record is rotated, the stylus will be guided accurately end thereof.
What I claim is z t ecord having, at the start- A phonographic r ing end of its sound record groove, a plurality of stylus guiding grooves located within the bounds of the record groove and in the same horizontal pla ing grooves leading to the said starting end ne therewith, said guideof the sound record groove on arcuate lines eccentric to the axi s of rotation of the said sound record groove, and having their inner ends merging with one another and with the said starting end of In testimony whe the sound record groove. reof I aiiiX my signature. JOHN S. OLEARY.
US412185A 1929-12-06 1929-12-06 Needle guide for records Expired - Lifetime US1859153A (en)

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US412185A US1859153A (en) 1929-12-06 1929-12-06 Needle guide for records

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US412185A US1859153A (en) 1929-12-06 1929-12-06 Needle guide for records

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US1859153A true US1859153A (en) 1932-05-17

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US412185A Expired - Lifetime US1859153A (en) 1929-12-06 1929-12-06 Needle guide for records

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520284A (en) * 1944-12-09 1950-08-29 Harry G Lundgren Time announcing phonograph
US3501154A (en) * 1968-01-25 1970-03-17 Mattel Inc Multiple sequence sound reproducer
US3598415A (en) * 1969-01-17 1971-08-10 Mattel Inc Record for use in a sound-reproducing device in a toy or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520284A (en) * 1944-12-09 1950-08-29 Harry G Lundgren Time announcing phonograph
US3501154A (en) * 1968-01-25 1970-03-17 Mattel Inc Multiple sequence sound reproducer
US3598415A (en) * 1969-01-17 1971-08-10 Mattel Inc Record for use in a sound-reproducing device in a toy or the like

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