US1538690A - Portable phonograph - Google Patents

Description

May 19, 1925 s. DAVIDSON PORTABLE ruonoemrn Eilgq, n 925 mm: R 54111 Mun/190w ummvsrs WIT 8858 Patented May 19, 1925.

UNITED STATES SAUL DAVIDSON, OF NEW YORK, N. Y.

PORTABLE PHONOGRAPH.

Application filed June 8,

To all whom it may concern:

Be it known that I, SAUL DAVIDSON, a citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the county of Bronx and State of New York, have invented a new and Improved Portable Phonograph, of which the following is a full, clear, and exact description.

This invention has relation to talking machines and has particular reference to an improvement in portable phonographs.

One of the main obstacles to the produc tion of a compact portable phonograph is due to the proiection of the tone arm above the turntable which necessitates a high enough cover to compensate for the housing of the same. In some instances this has been overcome to some extent by making the tone arm detachable from the amplifying chamber for storage in a separate compartment or in the amplifying chamber.

It is, therefore, the principal object of the present invention to provide a tone arm which is automatically lowered to an out-ofthe-way position upon closure of the cover whereby the tone arm will be disposed below the plane of the turntable and whereby upon opening of the cover the tone arm will be automatically raised to a proper relation to the turntable for cooperation therewith.

More specifically the invention contemplates a portable phonograph in which the amplifying member and tone arm are constructed as a separate unit having connection with the cover whereby said unit is automatically lowered upon closure of the cover and raised upon opening of the cover in order to dispose the tone arm below the plane of the turntable when the cover is closed and to properly position the same when the cover is opened and the unit is raised to coact with the turntable.

As a still further object the invention contemplates an improvement in phonographs which does not materially complicate the structure or increase the cost of production while functioning to reduce the bulk or size of the same to a minimum.

With the above recited and other objects in view, the invention resides in the novel construction set forth in the following specification, particularly pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that t ght s res r ed o embodiments other 1923. Serial No. 644,213.

than those actually illustrated herein to the full extent indicated by the general meaning of the terms in which the claims are expressed.

In the drawings Figure 1 is a plan view of a portable phonograph constructed in accordance with the invention and illustrating the cover in opened position and the tone arm in a position to cooperate with the turntable.

Fig. 2 is a fragmentary sectional view therethro-ugh taken approximately on the line 2-2 of Fig. 1.

Fig. 3 is a similar view with the cover in closed position and the tone arm and amplifier in lowered position.

Fig. 1 is a fragmentary detail sectional view taken approximately on the line 41 of Fig. 1.

Referring to the drawings by characters of reference, designates the box-like body of the phonograph which is provided with a horizontal stationary bed 11 adjacent its upper open end over which the turntable 12 is arranged for rotation. A cover 13 is hinged to the upper edge of the rear wall as at 14 for swinging movements to open or closed position. The bed 11 terminates an appropriate distance from the rear wall and has hinged thereto for downward swinging movement a shelf 15 by means of hinges 16. The tone arm 17 is swiveled as at 18 to the upper side of the shelf and communicates with the amplifying chamber 18 which is defined beneath the shelf by a substantially U-shaped member 20. The shelf is provided with an opening 21 which communicates with the amplifying chamber at the opposite end from that with which the tone arm communicates to afford an outlet for the sound from the amplifying chamber. The sound box 22 is carried in the usual manner by the free end of the tone arm and the retaining screw 23 for holding the needles in the sound box is designed to cooperate with a hook 24 provided on the shelf 15. A connecting bar 25 is hinged as at 26 to the inside of the cover and hinged as at 27' to the shelf 15 whereby the shelf and cover are connected for simultaneous movement. From this construction it will be seen that the tone arm and sound amplifying means comprise a separate unit from the turntable and bed. The connection between the shelf 15 and the cover 13 functions upon closing of the cover to automatically swing the shelf downwardly whereby the tone arm is disposed below the plane of the turntable and in an out of the way position in order not to interfere with the cover. This connection further serves upon opening of the cover to raise the shelf 15 and the tone arm whereby said shelf is disposed in horizontal alignment and in the same plane with the bed 11 to permit the tone arm to properly cooperate with a record when placed on the turntable. The connection further operates as a means for holding the cover against swinging beyond a predetermined point when open. The hook 24: which engages the screw 23 serves to connect the tone arm with the shelf while in lowered position or during its movement to or from its lowered position.

I claim:

1. A portable phonograph, comprising a body having a hinged cover, a bed over which a' turntable is mounted, a box-like member hinged to the bed and defining an amplifying chamber having an inlet opening and an outlet opening in its upper wall, a tone arm swiveled to the upper wall of said member and having communication with the inlet opening, and a connection between the cover and said box-like member operable upon closing of the cover to swing the member downward for disposing the tone arm below the plane of the turntable and functioning upon opening of the cover to swing the member upwardly to dispose its upper wall in a plane with the bed whereby to position the tone arm for cooperation with the turntable. Y

2. In a portable phonograph, a body or casing having a hinged cover, a bed over which a turntable is mounted, a box-like amplifying member hinged to the bed, hav ing inlet and outlet openings, a tone arm swiveled to theupper wall of the amplifying member and communicating with the inlet opening, a connection between the cover and amplifying member operable upon closing the cover to swing the amplifying member downwardly for disposing the tone; arm below the plane of the turntable'andiunctioning upon opening of the cover to swing the amplifying member upwardly with its upper wall in a plane with the bed whereby to dispose the tone arm in position for cooperation with the turntable, and means for connecting the free end of the tone arm with the amplifying member when lowered or during the movement of the same.

SAUL DAVIDSON.

Images