US746609A - Speaking apparatus. - Google Patents

Speaking apparatus. Download PDF

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Publication number
US746609A
US746609A US14863803A US1903148638A US746609A US 746609 A US746609 A US 746609A US 14863803 A US14863803 A US 14863803A US 1903148638 A US1903148638 A US 1903148638A US 746609 A US746609 A US 746609A
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Prior art keywords
cylinder
drum
speaking
speaking apparatus
clockwork
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Expired - Lifetime
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US14863803A
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Paul Vogel
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/02—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using cylindrical record carriers

Definitions

  • PAUL VOGEL OF BERLIN,GERMANY.
  • My invention relates to speaking appara tus in which the sound-waves are engraved in the usual manner of phonographs, but on the inner side of the hollow body or recordcylinder.
  • FIG. 1 is a front elevation of the device.
  • Fig. 2 is a plan showing'asection of the roller space.
  • a is the stand, I) the drum for carrying the body or record-cylinder, and c the clockwork for driving the device, 2 being the record cylinder of body containing the sound-waves.
  • the reference letters 01 to d represent grooved rollers suitably attached to the stand a and which are adapted to carry the drum.
  • a spurgearing e Secured to the rear of the drum 1) is a spurgearing e, which meshes with a gear f, driven by the clockwork.
  • a spindle g projects in thehollow space of the interior of the drum. This spindle is screw-threaded and is secured to the clockwork, so as to be rotated thereby.
  • Guiding-rods h and 'i are secured to a stationary part of the clockwork c and project into the space in the interior of the drum.
  • the usual membrane sliding carriage 1, having sliding connection with the rods h and z, is also provided.
  • This carriage is operated by means of a threaded segment is, carried by a spring Z, which is connected to one of the sliding connections of the carriage.
  • the screwthreads of the segment engage with the threads of the spindle g. Thus as the latter rotates the segment is moved forward, carrying with it the carriage.
  • I claim as my invention In an apparatus for reproducing sounds, a hollow rotating body having an inner surface for carrying the record thereon, and stylus mechanism operatively engaging said inner surface.

Description

PATENTED DEC. 8, 1903.
P. VOGEL. I SPEAKING APPARATUS, APPLICATION MAR IQ, 1903.
N0 MODEL.
EJJEJ. w bmw UNITED STATES Patented December 8, 1903.
PAUL VOGEL, OF BERLIN,GERMANY.
SPEAKING APPARATUS.
SPECIFICATION formingpart of Letters Patent No. 746,609, dated December 8, 1903. Application filed March 19, 1993. Serial No. 148.638. (No model.)
To (ZZZ whom it may concern.-
Be it known that I, PAUL VoeEL, a subject of the Emperor of Germany, residing at Her lin, Germany, have invented certain new and useful Improvements in Speaking Apparatus, of which the following is a specification.
My invention relates to speaking appara tus in which the sound-waves are engraved in the usual manner of phonographs, but on the inner side of the hollow body or recordcylinder.
The device is illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of the device. Fig. 2 is a plan showing'asection of the roller space.
- In the drawings, a is the stand, I) the drum for carrying the body or record-cylinder, and c the clockwork for driving the device, 2 being the record cylinder of body containing the sound-waves.
The reference letters 01 to d represent grooved rollers suitably attached to the stand a and which are adapted to carry the drum.
1) and to form a-roller-bearing for the same.
Secured to the rear of the drum 1) is a spurgearing e, which meshes with a gear f, driven by the clockwork. In thehollow space of the interior of the drum a spindle g projects. This spindle is screw-threaded and is secured to the clockwork, so as to be rotated thereby.
Guiding-rods h and 'i are secured to a stationary part of the clockwork c and project into the space in the interior of the drum. The usual membrane sliding carriage 1, having sliding connection with the rods h and z, is also provided. This carriage is operated by means of a threaded segment is, carried by a spring Z, which is connected to one of the sliding connections of the carriage. The screwthreads of the segment engage with the threads of the spindle g. Thus as the latter rotates the segment is moved forward, carrying with it the carriage.
By the employment of the inner surface of the cylinder a more exact touching of the cylinder by the reproduction-pointer is obtained than by having the sound-Waves on the outer side of the cylinder. Then, again,the grooves are protected from damage in packing, and the rollerdrum does not act as a wedge or in a spreading manner, as in the old style of device, but as a hoop, tending to keep the cylinder together. I
I claim as my invention In an apparatus for reproducing sounds, a hollow rotating body having an inner surface for carrying the record thereon, and stylus mechanism operatively engaging said inner surface.
In witness whereof I have hereunto set my hand in presence of two witnesses.
PAUL VOGEL.
-Witnesses HENRY HASPER, WOLDEMAR HAUPT.
US14863803A 1903-03-19 1903-03-19 Speaking apparatus. Expired - Lifetime US746609A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683038A (en) * 1948-09-15 1954-07-06 Presto Recording Corp Magnetic transducing unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683038A (en) * 1948-09-15 1954-07-06 Presto Recording Corp Magnetic transducing unit

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