US1023250A - Phonograph. - Google Patents

Description

G. L. HIBBARD.

I PHONOGRAPH. I APPLICATION FILED JULY 31, 1909.

1,023,250. Patented r.'16,1912.

2 s'nEBTssHEET 1.

C.-L. HIBBARD. PHONOGRAPH.

APPLIUATION FILED JULY 31, 1909.

1,023,250. PatentedApr.16,1912.

2 SHEETS-SHEET 2.

CHARLES L. HIBBABD, or men: ORANGE,'NEW'.1EBSEY, ASSIGNOR,

an STATES rA'rE o i 1 IC BY Mnsnn ASSIGN- MENTS, TO THOMAS A. EDISON, INCORPORATED, OF WEST ORANGE, NEW JERSEY,

A CORPORATION OF NEW PHONOGRAPH.

Specification otLettei-s Patent. Patented Apr. 16, 1912.

Application filed July 31, 1909. Serial No. 510,595.

To all whom it may concern:

Be itlmown that 1, CHARLES L. HIBBARD, a citizen of the United States, and a resident of East Orange, in the county of Essex and State of New Jersey, have made a certain new and useful Invention in Phonographs, of which the following is a description.

My invention relates to phonographs and more particularly to phonographs of the general type shown in United States Patent No. 772,485, granted October 18, 1904 to Weber and Hibbard.

-My invention has for its object the provision of improved meansfor raising and loweringthe arm which carries the reproducer or recorder or both. This arm is lowered to bring the reproducer or recorder stylus into contact with the record and is raised to remove the same therefrom in order that the record may be chan ed.

By; my invention a simple and effective lifti g device is provided, which is selflocking in each of its extremepositions, and

which is thrown by gravityinto either extreme position without the necessity of using springs.

invention also comprises certain other details of construction which will be hereinafter fully set forth.

Referring to the accompanying drawings disclosing one embodiment of my invention, Figure 1 represents a plan view of a portion of a phonograph equipped'with my invention. Fig. 2 is an end elevation of so much of a phonograph as is necessary to disclose my invention, the carrier arm being shown in raised position. Fig. 3 is a similar eview -0f the carrier arm, the same being shown in lowered position, and Fig. 4 is a detail View showing ,the various positions of the stop and locking pin on the lifting arm corresponding to the movements of the latter.

Referring to the drawings, the standard 1 of the phonograph which rises from a suit-' able base plate (not shown) carries the backrod 2 on which is mounted the sleeve 3, the carrier arm t being integral therewith. or secured thereto. Parallel with the back rod 2 is th ront guide rod 5 which is adapted toisup art the forward end of the carrier arm 4." The feed nut 6 engages the feed screw 7 when the carrier arm 4 is in lowered position and is disengaged therefrom when the carrier arm is in raised position, the feed nut 6' beingcarried by the usual feed nut spring, 8. The spectacle frame 9, which is adapted to carry a recorder and a reproducer, is pivotally mounted on the stud 1.0, the spectacle frame being thus .mounted to so rot-ate that either the recorder or reprpducer may be placed in operative position.

Thescrew or stud 10 is carried by the auxiliary arm 11 which is pivoted on the pin 12 carriedby the carrier arm l. All these parts are of usual construction. It is to be understogd, however, that my invention need not be applied to a phonograph employing .both a recorder and a reproducer, but that it may be used for lifting the carrier of a' phonograph equipped with both'oreither of these devices.

The lifting lever 13 is rotatably and slid ably mounted upon the forward guide rod 5, this lever being preferably provided with apassageway through the lower end thereof through which the said guide rod 5 passes. The lever 13 is provided with a handle 11 for manipulation of the same. A link 15 is pivotally connected to the lever 13 by means of screw 01' pin 16, and is pivotally connected to the carrier arm ,4 by the pin 12 already referred to, link 15 being mounted for free rotation around both pins 12 and 16. By this construct-ion, atoggle joint is provided, the central point of which is the stud l6 and the two arms are the link 15 and the portion of the lever 13 between the rod 5 and the stud 16 respectiwdy. By forcing the handle 14 to the right, as shown in Figs. 2 and 3, the toggle is straightened out and the carrier arm raised, the stylus being raised out of its engagement with the record 17, while by movement of the handle 14 to the left, the toggle is opened out and the stylus lowered into engagement with the record. The lever 13 is stopped in its extreme movement to the right, as shownin Fig. 2, by the engagement of pin 16, which is carried on the back of lever 13, against the projection 18 of the bracket 19 which is secured to the carrier arm 4 by means of screws 20, 20.- The lug 21 is provided upon 13 and forming a support for the carrier arm when in its lowered position.

The bracket 19 is formed,. as shown in Figs- 2, 3 and 4, with a guideway in which the pin 16 travels, the hook 18 forming a stop for the pin atthe extreme movement of the lever 13 to the right, as-shown in the; drawings, and the hook 18' being formed at the extreme left of the guideway. The link 15'is provided preferably with a slot 15" in which the pin 16 has a certain amount of lost motion. The object of the provision of this lost motion is that when the lever 13 is in its extreme left hand position, as shown in Fig.3, the pin 16 may be carried into locking engagement with the hook 18"-. \Vhen the lever 13 has been carried so far to the left in lowering "the stylus into con-.

tact with the record that the stop 21 on arm 4 contacts rod 5, thus limiting the downward movement of arm 4, the pin 16 is in the middle posit-ion of the three illustrated in Fig. 4. Theslot 15, however, permits the lever 13 to move a slight additional distance to the left, during which pin 16 moves from the position referred to, which is opposite the. nose of hook 18", to the extreme left'position shown, in which book 18 is beneath the same.

against any upward movementwhic h otherwise might ensue on raising the spectacle frame about its )ivot 12 in shifting the. recorder or repro ucer from operative into inoperative position.

It is to be noted that the .parts are so arranged that the center of gravity of the lever 13 is to the left of rod 5 upon which thelever is mounted when the carrier arm is in its lowered position, and to the right of the axis of guide rod 5 when the carrier is in its raised position, the lever 13 moving to either extreme position by gravity when the center of gravity of the lever 13' passes over the center .line of guide rod 5. It should also be noted that the carrier arm is vlocked in both positions because of the straightening out of the toggle when the parts are in raised position, and the locking of pin 16 by hook 18 when the parts are in lowered position.

Having now described my invention, what I claim and desire-to protect by Letters Patent is as follows:

1. In a phonograph, .the combination with the carrier arm and the rod upon which it This looks. arm 4 is pivotally mounted, of a lift lever for said arm, a rod parallel to said first named rod-,-

upon which said lever is pivotally mounted, and a link pivoted to said arm and lever,

said link and lever constituting a toggle joint, substantially as described:

2. a phonograph, the combination with the carrier arm and the backrod upon which it is-pivotally mounted, ofa front rod parallel to said back r'od,a lever ivotally mounted upon and embracing said front rod, and a link pivo-tally connected, to said; arm and lever, said link andlever consti-" tuting a toggle joint, substantially as de-' scribed.

-3. In a phonograph, the combination with,

the pivotally mounted carrier arm, of a toggle for raising and lowering sald arm,

said toggle comprising a plurality of piv-i otally connected members, one pivoted tosaid arm and the other. to a fixed part of the r parallel to said back rod, a lever pivotally mounted upon and embracing said front,

rod, at the lowerend of said lever, and a' link pivotally connected to said arm and lever above said front rod, said link and lever constituting a toggle joint, said toggle,

straightening out to lift said arm and opening to lower it, and the pivotal connection v of said link to said lever belng so placed'as to pass across the axis of said front rod in the movement oi: said toggle from one exe machine, substantially astreme positionto the other, substantially as described.

fThis specification signed and witnessed this 29 day of July 1909.

CHAR-LES L. HIBBARD.

\Vitnesses v JOHN M. CANFIELD, ANNA R. 'KLEHM.

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