US1390910A - Talking-machine - Google Patents

Description

A. T. JORDON.

TALKING MACHINE; APPLICATION FILED JUNE 23, 1920.

PatentedSept. 13, 1921;

fawn/0r UNITED STATES AUGUSTUS THEODORE JORDAN, OF LONDON, ENGLAND.

TALKING-MACHINE.

Specification of Letters ratcnt.

Patented Sept. 13, 1921.

Application filed June 23, 1920. Serial No. 391,079.

To all whom it may concern:

Be it known that I, Aosos'ros Tnnononn JORDAN a British subject, residirl g at Flat 3, dolville Terrace, Notting ill, London, England, have invented certain new and useful Improvements in Talking-Machines, of which the following is a specification.

This invention has for its object to provide a more eflicient and accurate transmission of the vibratory movements imparted to the diaphragm, or its substitute. in the reproduction of sound waves, or imparted to the cutter, or its substitute, in the recording of sound waves.

A further object is to afford a direct means of taking a substantial amount of spring out of the needle, thus insuring a prompt and solid transmission of the vibratory movement resultin in a prompt attack and body of tone, the vibrations of the needle point being transmitted at the earliest stage t to the carrier proper, instead of losing body and being impaired by being indirectly transmitted through a member of greater resilience than the means hereby provided.

Further, in my invention the needlehousing hole is situated obliquely to a line at right angles to the record thus compensating for the distortion that the needle undergoes on being strained on its unsupported end, and causing the needle at its operative end to be correctly positioned relative to the record, 1'. e. in a plane at right angles to the disk record, when the needle is tracking the record.

The needle-holding socket is made of sufiicient diameter to insure the needle falling out when the needle screw is unscrewed sufficiently to clear the needle, even with the sound box in its normal oblique position to the record. It is therefore not at all necessar to pull the needle out.

he invention is illustrated in the accompanying drawing in which Figure 1 is a side elevation of a sound box and stylus having my invention applied thereto, a needle bearing shown in position.

Fig. 2 is a sectional elevation of another form of stylushaving my invention applied thereto, and Fig. 3 1s a part sectional elevation' viewed at right angles to the other two views.

The carrier a may be of any convenient cross-section and in cases where a cross-bar is employed as illustrated in Fig. ,1 may be either brazed or soldered thereto or fitted in a hole therein or attached in any other convenient manner. Situated below the normal level of the needle carrier or housmg, the carrier is provided with a downwardly-projecting lip or extension 6 having a threaded hole 0, to accommodate the needle-holding screw oi, the axis of the said hole 07 passing through the axis of the needle-holding socket but beingset obliquely thereto as shown. The lip or extension I) is so situated that the needle-holding screw d engages with the needle at a point as near as practicable to the needle-point, the said screw being engaged with sufficient force to take up the resilience existing in the body of the needle lying above the said point of engagement. The obliquity of the threaded hole is such that the head of the screw deflectively clears the record surface. The needle-holding socket is drilled obliquely to the vertical in a plane containing the axis of the threaded hole 0 to an extent such that when the screw d is finally engaged with the needle, the amount of distortion received by the needle will compensate the said amount of obliquity and cause the needle-point to be set on the record in a proper vertical position. The external walls of the carrier may be formed parallel to the axis of the needle-holding socket or so as to be vertical during playing, as desired.

It will be seen that by my invention, 1 reduce to a minimum the effect of the resilience which operates in needles mounted in carriers having a needle-holding screw situated about the mouth of the carrier, and that the point of the needle is set upon the record in a proper vertical position.

I claim 1. In talking machines, a needle-holder having a socket, a needle seated in said socket, a downward extension proceeding from the mouth of said needle holder, said extension having a threaded hole, a needleholding screw seated in said hole and engaging the needle at a point in close proximity to the needle-point.

2. In talking machines, a needle-holder having a socket, a needle seated in said socket, a downward extension proceeding from the mouth of said needle-holder, said extension having a threaded hole, the axis of the threaded hole forming a downwardly directed acute a g e wi h t ax s W;

socket of the needle-holder, a needle-holding screw seated in said hole and engaging the. needle at a point in close proximity to the needle-point.

3. In talking machines, a needle-holder having a socket, a needle seated in said socket, a downward extension proceeding from the mouth of said needle-holder, said extension having a threaded hole, a needle holding screw seated in said hole and engaging the needle at a point in close proximity to the needle-point, the axis of the socket of the needleholder being set obliquely from the vertical to an extent adapted to compensate the distortion of the needle produced by the engagement of the screw and cause the point of the needle to be set upon the record in a vertical position.

'4. In talking machines, a needle-holder having a socket, a needlelseated in said socket, a downward extension proceeding from-the mouth of said needle-holder, said extension having a threaded hole, the axis of the threaded hole forming a downwardly directed acute angle with the axis of the socket of the needle-holder, a needle-holding screw seated in said hole and engaging the needle at a point in close proximity to the needle-point, the axis of the socket of the needle-holder being set obliquely from the vertical to an extent adapted to compensate the distortion of the needle produeed by the engagement of the screw and cause the point of the needle to be set upon the record in a vertical position.

5. In talking machines, a needle-holder having a socket, a needle seated in said socket, means attached to said needle-holder having a, threaded hole, a needleholding screw seated in said hole and locking said needle against the lower edge of the needleholder, the point of engagement of the screw with the needle being situated below the lower edge of the holder.

6. A needle holder for talking machines having a needle receiving socket arranged oblique to the vertical, and means carried by the holderto engage the pointed end of the needle and force said end into a relatively vertical position.

7. A needle holder for talking machines having a needle receivin socket arranged oblique to the vertical, and means carried by the holder to engage the pointed end of the needle and force said end into a relatively vertical position, said means serving to retain the needle in the holder.

8. A needle holder for talking machines having a socket to receive the needle and permit a portion of said needle to project beyond the socket, and means for engaging the projecting portion of said needle beyond the end 01": the socket for holding the needle against displacement from the socket.

In testimony whereof I afiix my signature.

AUGUSTUS THEODORE JORDAN.

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