US1423360A - Attachment for phonographs - Google Patents

Description

'0. B. PRESTON.

ATTACHMENT TOR PHONOGRAPHS.

APPLICATION FILED APR. 4. 1922.

Patented July 18, 1922.

PATENT OFFHZE.

a ETON B. PRESTON, or rnovinmrcn, nnonn rsmmi.

ATTACHMENT FOB PHONOGRAIPHS.

Specification of Letters iPatent. Patented uly 18, 1 922,

Application filed April 4, 1922. Serial No. 549,597.

.To all whom it may concern:

and State of Rhode Island, have invented certain new and useful Improvements in Attachments for Phonographs, of which the following is a specification.

This invention relates to attachments for phonographs and was primarily designed for use with phonographsof the Edison t pe.

. ln using phonographs of this type a separate and distinct movement of the reproducer is necessary to place the same at a point directly above its starting place of the record. This movement is accomplished by means of a lever which controls the horn to which the reproducer is attached. With the eye as the only guide, in a subdued light the proper positioning of the reproducer is diflicult and uncertain. A positive guide is therefore desirable and an eifort has been made to supply one.

The general objects of this invention are to overcome dependence on the eye for positioning the reproducer, and to accomplish this result in the same movement that lowers the reproducer onto the record, thus .combining the two movements in one; and to attain these ends in a'positively acting, sim ple, and inexpensive guiding means.

.To these ends there is provided guiding means which cooperates with means associated with the horn to swing the horn and its shaft as the parts are being lowered to playing position, thereby causing the reproducer to travel the desired distance toward the record on a diagonal plane, and as the movement of lowering-is completed, the

reproducer travels vertically to playing position.

These and other objects of the invention will be more clearly understood from the following detailed description and accompanying drawings, in which Figure 1 is a top plan view'of a talking machine,

Figure 2, a section along the line 2-2,

Figure 3, a front elevation of the guiding means in engagement with the cooperating projection as viewed on line 3-3 of Figure 2, and

Figure 4, alike elevation of the same show ing the parts in another position of engage ment.

Like reference characters indicate like parts throughout the views.

In order to set forth clearly this invention and to describe its operation it will be first necessary to explain the construction of the machine with which it is used. Referring to the above mentioned drawings,

producer l4 and tone arm. 15 are attached is fast to the horn supporting shaft 17 which a frame 1() is shown upon which a turnis axially and rotatably movable. Attached to the lower end of this-shaft or rod is. a tubular extension 18 of the horn. The upper end of this rod or shaft is loosely mounted on a pin 20 extending between the forks of a forked lever 19. As thelever 19 is raised to a vertical position the shaft or red 17 descends until the reproducer contacts with the record 21.

In order to correctly position the reproducer on the record, a block 22 which is provided with a face 23, the plane of which extends at an angle to the, horizontal as shown in Figures 3 and 4, is mounted to cooperate with a projection or screw 24 fast in the shaft 17 and the horn 13. This block 22 is attached to the lower platform of the frame by means of screws 25 and 26. The block is so positioned that when the. projection 24 slides dowwardly over the face 23 andengages with the vertical face 27 the shaft and horn are rotated and the reproducer 14- has been moved into the desired position for starting on the record as shown in broken lines in Figure 1. I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention I do not limit myself strictly to the exact details herein illustrated since manifestly the same can be considerably varied without departing from the spirit of the invention as defined in the appended claims.

I claim e 1. In combination with a honograph including a horn mounted on ide with a vertical shaft, and a reproducer for cooperating with a record, a reproducer positioning attachment comprising a block having a face extending at an angle to the horizontal, and means cooperating with the horn for engaging with said face to rotate the horn to positionthe reproducer on the record.

2. In combination with a phonograph ineluding a horn mounted upon a rotatable and vertically slidable shaft, and a repreducer for cooperatingwith a record, a reproducer positioning attachment comprising guiding means for cooperating with the shaft and horn when the shaft is being lowered to swing the reproducer to the desired v 3 position for starting it on the record.

, 3. In combination with a phonograph including a horn mounted on a vertically reciprocable and rotatable shaft, and a resignature.

- CARLETON B. PRESTON.

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