US984789A - Needle for sound-reproducing instruments. - Google Patents

Needle for sound-reproducing instruments. Download PDF

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Publication number
US984789A
US984789A US47524409A US1909475244A US984789A US 984789 A US984789 A US 984789A US 47524409 A US47524409 A US 47524409A US 1909475244 A US1909475244 A US 1909475244A US 984789 A US984789 A US 984789A
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Prior art keywords
needle
sound
reproducing instruments
instruments
rim
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Expired - Lifetime
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US47524409A
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Ernest Alfred Allwood
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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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
    • G11B3/48—Needles

Definitions

  • the present invention has relation to needles for use with sound reproducing instruments, and comprises improvements whereby the sound reproduc' g and vibratory qualities are greatly enhanced;
  • Figure 1 is a front elevational view of one form of the present invention.
  • Fig. 2 shows a side view of the needle illustrated in Fig. 1.
  • Fig. 3 illustrates a pointed needle previous to stamping.
  • Fig. 4 shows a modified formof needle subsequent to stamping.
  • Figs. 6, 7 and 8 are further modi fications of the improved needle.
  • the needle is preferably formed rom a pointed length of metallic wire A, such wire having'one or more raised ridges or rims a for'med by ressin or'stamping upon one side ofa fiiittene enlargement asshown by Figs. 5 and 7, or upon .bothsides Specification oi Letters Patent. Application filed January 30, 1909. Serial No.
  • the interior of or between the ridges a is subsequently removed as at a Fig. 1 or in cases in which increased rigidity is required, may be retained in the form of a thin diaphragm a while a fin or feather a is formed upon the exterior of the rims a.
  • the needle may provided with secondary ridges a across the face in order to supplement the main ridges a while one ridge or rim may be formed upon one or each side, or multi-ridges as shown in Figs. 7 and 8 may be used;

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  • Percussion Or Vibration Massage (AREA)

Description

E. A. ALLWOOD. NEEDLE FOR SOUND REPRODUGING INsT UME NTS.
APPLICATION FILED JAN. 30, 1909.
Patented Feb.21,1911.
FIGS. F 16.4%
5' IS a vertical section ERNEST ALFRED ALLWOOD OF ALCES'IER,
ENGLAND.
I NEEDLE FOR SOUND-REPRODUCIN INSTRUMENTS.
To all whom it may concern:
Be it known that I, ERNEST ALFRED ALL- wooo, a subject of the Kingdom of Great Britain,-resi'ding at Alcester, in the county of Warwick, England, have invented certain new and useful Improvements in Needles for Sound-Reproducing Instruments, of which the following is a specification.
The present invention has relation to needles for use with sound reproducing instruments, and comprises improvements whereby the sound reproduc' g and vibratory qualities are greatly enhanced;
In order that this invention may be clearly understood and more easily carried into practice, reference may be had to the appended explanatory sheet of drawings on which Figure 1 is a front elevational view of one form of the present invention. Fig. 2 shows a side view of the needle illustrated in Fig. 1. Fig. 3 illustrates a pointed needle previous to stamping. Fig. 4 shows a modified formof needle subsequent to stamping. Fig. of the needle shown in Fig. 4'. Figs. 6, 7 and 8 are further modi fications of the improved needle.
In carrying the present improvements into efiect, the needle is preferably formed rom a pointed length of metallic wire A, such wire having'one or more raised ridges or rims a for'med by ressin or'stamping upon one side ofa fiiittene enlargement asshown by Figs. 5 and 7, or upon .bothsides Specification oi Letters Patent. Application filed January 30, 1909. Serial No.
Patented Feb. 21, 1911. 475,244.
the interior of or between the ridges a is subsequently removed as at a Fig. 1 or in cases in which increased rigidity is required, may be retained in the form of a thin diaphragm a while a fin or feather a is formed upon the exterior of the rims a.
The needle may provided with secondary ridges a across the face in order to supplement the main ridges a while one ridge or rim may be formed upon one or each side, or multi-ridges as shown in Figs. 7 and 8 may be used;
Having now described my invention, I declare. that what Iclaim is '1. A needle for use with sound reproducing instruments having a flattened enlargement with a raised rim or rims thereon, and a fin 0r feather exterior 2. A needle for use with sound reproducing instruments having a flattened enlargemerit, a centrally depressed diaphragm with. a surrounding rim,: and a fin to said rim substantially as and for the purpose herein set fortlr.
In witness whereof my hand in the I have hereunto set presence of two witnesses. ERNEST ALFRED ALLWOOD; Witnesses:.
WALTER H. E. BARTLAl I,
HORACE H. SMITH.
edge to the said .rim or rims substantially as and for the .purpose herein set forth.
US47524409A 1909-01-30 1909-01-30 Needle for sound-reproducing instruments. Expired - Lifetime US984789A (en)

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US47524409A US984789A (en) 1909-01-30 1909-01-30 Needle for sound-reproducing instruments.

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US47524409A US984789A (en) 1909-01-30 1909-01-30 Needle for sound-reproducing instruments.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455913A (en) * 1944-10-16 1948-12-14 Shure Bros Stylus construction
US2645684A (en) * 1948-06-30 1953-07-14 Rca Corp Noise discriminating system
US2660438A (en) * 1948-08-03 1953-11-24 Pfanstiehl Chemical Company Phonograph needle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455913A (en) * 1944-10-16 1948-12-14 Shure Bros Stylus construction
US2645684A (en) * 1948-06-30 1953-07-14 Rca Corp Noise discriminating system
US2660438A (en) * 1948-08-03 1953-11-24 Pfanstiehl Chemical Company Phonograph needle

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