US705165A - Horn-supporting arm for talking-machines. - Google Patents

Description

Nu. 705,l65. Patented July '22, I902. P. VALlflUET.

HORN SUPPORTING ARM FOR TALKING MACHINES.

(Application filed Mar. 19, 1902.)

2 Sheets-Sheet I.

(No Model.)

WITNESSES:

No. 705,l65. v Patented July 22, I902.

' L. P. VALIOUET.

HORN SUPPORTING APM FDR TALKING MACHINES.

(Applicmion filed Mar. 19, 1902,) (No Model.) 2 Sheets-Sheet 2.

WITNESSES:

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UNITED STATES PATNT OFFICE.

LOUIS P. VALIQUET, OF NEW YORK, N. Y., ASSIGNOR TO UNIVERSAL TALK- ING MACHINE MANUFACTURING COMPANY, OF NEW YORK, N. Y., A COR- PORATION OF NEYV YORK.

HORN-SUPPORTING ARM FOR TALKING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 705,165, dated July 22, 1902. Application filed March 19, 1902. Serial No. 98,923. (No model.)

To all whrmt it 77mg concern:

Be it known that 1, Louis P. VALIQUET, a citizen of the United States of America, and a resident of the borough of the Bronx, city,

county, and State of New York, have invented certain new and useful Improvements in I-Iorn Supporting Arms for Talking Machines, of which the following is a specification.

1 o My invention relates in general to soundreproducing apparatus, and more particularly consists of an improved arrangement for supporting horns of different length em ployed on such apparatus for magnifying the volume of the reproduction of sound. As illustrated, the invention is applied to that type of sound-reproducing apparatus employing a sound-record in the form of a flat disk, though it may also be used with other forms an of talking-machines.

In the development of the talking-machine art the use of longer horns has become general in order to increase the loudness of the reproduction. These require the use of long supporting-brackets, which are liable to bend and sag under the very considerable weight of the long horn. Moreover, the great length of the horn frequently brings the center of gravity of the whole apparatus outside of the go supporting-base, with the result that the machine tips over when the long horn is put in position. My invention overcomes these ditficulties and also provides a construction in which horns of different length can be supported from the same b1'acket-arm.

The preferred form of my invention is illustratedin the accompanying two sheets of drawings, in which Figure 1 is a side elevation of a machine having a long horn in position, certain parts being broken away. Fig. 2 is a detail plan View of a portion of the swinging arm with the sliding hinge thereon. Fig. 3 is a side elevation and partial section of parts shown in Fig. 2. Fig. 4 is a detail plan View of a part of the supporting-bracket, and Fig. 5 is a side elevation of the machine with a short horn in position.

Throughout the several figures of drawings like reference-figures indicate like parts.

The talking-machine consists of the usual casing 1, containing a spring-motor, which rotates the table 2 on which rests the sound-'- record 2. A bracket 3, attached to said casing, supports the swinging arm 4, which carries the sound-box 5 and horn 6, the outer end of which is supported by the fork 7. The inner end of the bracket 3 has an eye 8 formed therein and is attached to the motor-casing l by any suitable means, such as a thumb-screw 6o 9, passing through said eye.

The bracket 3 has a depending lug 10, in which is mounted a screw 11 or other adjustable part adapted to engage the side of the motor-casing. Preferably the screw 11 has a facing 12 of feltorothersoft material which will not mar the polishof the motor-casing.

A depending support 13 has itsupper end resting in a socket 13, formed in the bracket 3, and is preferably held adjustably'therein by the set-screw 1-1. The lower end of the support reaches to the table or other surface on which the machine stands.

In the outer end of the bracket 3 is a socket 15, in which rests the pivot 16. A sliding block 17 is mounted on the arm 4: and corn nected to the pin 16 by a hinged joint having a horizontal axis 18. The block 17 carries the fork-7 and is held at the proper point on the arm 4 by the set-screw 19. The inter- 8o meshing portions 20 and 21 of the hinged joint are so shaped that the motion of the hinge is limited in either direction, as shown in Fig. 3.

The method of operating my invention is clear from the foregoing description. In shipping the machine the bracket 3 is detached from the motor-casing. When the machine is to be set up, the bracket is attached to the motor-casing by means of the screw 9. The screw ll is then turned until the parts are all placed in a state of strain, which insures the rigidity of the bracket with reference to the casing. The ornamental web extending from the under side of the bracket to the lug 10 serves also to give rigidity to the parts. The depending support 13 is placed in position so that its lower end rests upon the table and is then clamped there by the set-screw 14. If a long horn is to be used, the pivot-pin 16 is placed in the socket 15, the sliding hinge block 17 is clamped to the arm 4 at the proper point by means of the set-screw 19, the fork7 is mounted in said hinge-block, and the sound-box 5 and horn 6 placed in position. If a short horn is to be used, the pivot-pin 16 is placed in the socket 13*, with the resultant rearrangement of parts shown in Fig. 5 to vary the effective length of the reproducer-arm.

The shapes of the interlocking portions 20 and 21 of the supporting-hinge are such that they allow the necessary movement of the arm 4 and sound-box 5 to produce engagement and disengagement of the reproducer with the sound-record 2. If, however, the arm is swung to one side of the record, its downward movement is checked in the position shown in full line, in Fig. 3, before the stylus can strike the surface of the table on which the machine stands. If, on the other hand, the arm is raised to the position shown in dotted lines in Fig. 3, the center of gravity of the arm, sound-box, and horn will be shifted to the right of the axis 18 of the hinge, and further movement being checked by the engagement of the parts 20 and 21 the parts will remain in that position of disengagement between record and reproducer while the record is being changed or any other desired operation is being performed.

The advantages of my invention comprise the stability of the machine when a long horn is used and the rigidity of all the parts, whereby internal vibrations and rattling, which tend to destroy the accuracy of the reproduction, are avoided, also the facility of using both long and short horns with the same supporting apparatus, convenience in taking apart and assembling the different portions of the mechanism, and the general ease and convenience of manipulation.

Of course various changes could be made in the details of construction illustrated and described without departing from the spirit and scope of myinvention. The means of attachment of the bracket to the motor-casing might be changed and also the form of the adjustable depending lug. Other forms of supporting devices might be substituted for the rod 13. Other forms of hinged joint and pivot connection mightbe employed and different means for supporting the horn substituted for the fork '7. Other means for varying the effective length of the reproducer-arm might be employed. In case a short horn is used the support 13 may be dispensed with, as shown in Fig. 5. These and other changes which might be made, however, are merely matters of detail, and I should consider the construction so modified as still within the boundaries of myinvention so long as the principles of construction above described are retained.

Having, therefore, described my invention, what I claim as new, and desire to protect by Letters Patent, is- I 1. In a sound-reproducing apparatus, the

tomes combination of the motor-casing, a bracketarm having an eye formed in its inner extremity and a downwardly-projecting lug thereunder, fastening means passing through the eye and engaging the upper part of the motor-casing, and'an adjustable extension of the before-mentioned lug adapted to engage the side of the motor-casing.

2. In a sound-reproducing apparatus, the combination of the motor-casing, a bracketarm having an eye formed in its inner extremity and a downwardly-projecting lug thereunder, fastening means passing through the eye and engaging the upper part of the motor-casing, and an adjustable extension of the before-mentioned lug adapted to engage the side of the motor-casing, together with a depending adjustable support for said bracket-arm.

3. Inasound-reproducingapparatus adapt ed to operate with a swinging reproducer and horn attached thereto, the combination of a motor-casing,a bracket-arm attached thereto, and means for pivoting thereto at various points in its length reproducer-arms of different radii togetherwith a reproducer-arm whose effective length may be varied.

4. In asound-reproducing apparatus adapted to operate with a swinging reproducer and horn attached thereto, the combination of a motor-casing,abracket-arm attached thereto, and means for pivoting thereto atvarious points in its length reproducer-arms of different radii, together with a swinging repro ducer-arm having a supporting-pivot adjustable lengthwise thereof.

5. In a sound-reproducing apparatus, the combination of the rotating record-carrying table, the reproducer, horn, and swinging arm therefor, the supporting-bracket, the vertical pivot-pin journaled therein, a hinged joint between said pivot-pin and arm having a horizontal axis, the intermeshing portions of said hinged joint being so shaped that the motion of the arm in a vertical plane is checked on either side, as the center of gravity of the horn and arm reaches a predetermined distance beyond a perpendicular line drawn through the pivot.

6. In a sound-reproducing apparatus, the combination of a motor-casing, a bracketarm, means for fastening the inner end of said bracket-arm to the upper surface of the motor-casing, and a depending lug from said bracket engaging one of the sides of the motorcasing.

7. In asound-reproducingapparatus adapted to operate with a swinging reproducer, the combination of a sliding block adjustable on said arm, and pivot-pin hinged to said block.

Signed at New York city, New York, this 17th day of March, 1902.

LOUIS P. VALIQUET.

Witnesses:

W. H. PUMPHREY, L. E. PEARSON.

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