US1129792A - Phonograph. - Google Patents

Description

0. B. COLE.

PHONOGRAPH.

APPLICATION FILED JULY 16, 1914.

!L:l29,"792. I PatenteaFeb.2s,1915.

. vTo all whom 'it may concern I OTTO B. COLE,

OF BOSTON, MASSACHUSETTS, ASSIG'NOR T0 ARION MANUFACTURING' COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

PHONOGBAPH.

Specication of Letters Patent.

' Patented Feb. 23, 1915.

Application led July 16, 1914. Serial No. 851,386.

Be it known that I, OTTO B. COLE, zen of the United States, residing at Boston,

vcounty of Suifolk, Commonwealth of Massachusetts, have invented certain new and useful Improvements in Phonographs, of which the following is a specification.

This invention relates to phonographs of the class known as hornless phonographs. Such phonographs are not in fact hornless but have the horn or sound amplifier inclosed in a suitable cabinet or casing within the machine. The objectionable scratching noise produced by roughnesses in the record groove and the harsh metallic effects given out by the moving parts of the machine are familiar characteristics of phonographs of this class, and in fact of nearly all phonographs, and tend to largely detract from the quality and timbre of the original tone. To the end therefore of completely reproducing the quality and sweetness of the original tone without the presence of these extraneous mechanical vibrations, lI have devised my present invention. In it the cabinet is open on one side and' a sound board is located vertically within the cabinet and parallel to the open side. The sound waves are delivered from the reproducer directly against this sound board by a sound conductor having an inwardly directed end entering the cabinet. The sound board has flaring partitions extending outwardly to the lateral edges of the open side of the cabinet and these partitions with the sounding board provide a sound amplifier whereby to direct thesound waves outwardly with increased volume and fidelity of tone. The volume of the reproduced sound is regulated and modulated by a sliding damper arranged in controlling relation within the sound conducting tube. Means are also provided for positively locking the swiveled reproducer arm when said arm is swung away from the record out toward the side of the cabinet. l

These and various other features as well as the construction and principle of my invention will be more fully disclosed and discussed in the'specification thatfollows.

In the drawings forming a part of that specification I have shown as illustrative embodiments two forms of phonographs which have proven satisfactory in use.

Throughout specification and drawings a citi-- like reference numerals are employed -to indicate corresponding parts, and in these drawings:

Figure 1 is an elevation of a phonograph in accordance with my invention, illustrat- 1ng in full and dotted linesl the two positions of` the lock for the reproducer arm, Fig. 2 is a detail of the lock detached, Fig. 3 is a plan section of one form of phonograph taken on the line 3 3, of Fig. 4, Fig. 4 is a. vertical section on the line 4-4, of Fig. 3. Fig. 5 is a plan section of a modified form of phonograph taken on the line 5-, of Fig. 6. Fig. 6 is a vertical section on the line 6-6 of Fig. 5, and Fig. 7 is a detail of the tone modulating damper.

I have indicated at 1 the cabinet or casing of a phonograph of the so called hornless type. The cabinet is divided interiorly into two compartments, 2 and 3, respectively, by

.a sounding board 4. vWithin the compartment 2 is located the usual motor (not shown) operated by an exposed hand crank 5. Within the compartment 3 is located the delivery end 6 of a sound conductor leading from the reproducer 12 to the sound board 4. The delivery end 6 of the sound conductor is formed as a downwardly and inwardly curved tube located within the cabinet and having an inwardly iiared mouth delivering directly against the sound board 4. The upper restricted end of the tube is substantially vertically disposed. This end is screw threaded internally as indicated to receive the external screw threads on one end ofa flanged coupling member 7. The opposite end of the coupling member 7 receives and provides a swiveled mount for the lower end of an elbow 8, whereby the elbow may swing laterally. The opposite end of the elbow has a bead over which is slipped one end of a hollow reproducer arm 9. The arm 9 is loosely held at this end by a collar 10 and a set screw 11 which permits the necesend at 16 to the cabinet 1 and forked at its other end'at 17 to engage the reproducer arm. The lock normally lies in the full line position shown in Fig. 1. When it is desired to lock the reproducerarm so that said' arm will .not swing back over the record, thelock 15 is swung up vertically to the dotted line position shown in Fig. 1 to bring its upper forked end 17 under the reproducer armso that the forks 17 engage said arm-on either side. The locking member 15 will remain in its upright position, by

reason of the friction developed at the pivot 16, and can not-be released until the arm 9 is disengaged.

In order to modify the volume of sound passing through the elbow 8, I provide the tone modulator and intensifier shown in detail in Fig. 7. This device may conveniently consist of a damper or slide valve 18 slidably guided in ways across the throat of the elbow 8. The damper 18 is provided with a plurality of openings 19 of gradually decreasing diameter whereby the volume of sound passing-through the member 8 may bewaried. In using themodulator it is essential\that\the@les 19 be positively centered relatively to the throat. This is effected in the present invention by means of a spring pressed catch member 20 mounted for locking engagement with any notch of a series of locking notches 21 formed in one edge ofthe damper 18.l The tendency of the spring is to project its catch in the path of the damper, so that when a notch ismoved up opposite to the catch it will be engaged thereby to positively lock the damper in centered position.

The sound board 4 referred to hereinabove consists in Figs. 1 to 4 inclusive of a vertically disposed wall 4a arranged within the cabinet parallel to .the open side 23 thereof. Extending diagonally from each endof saidwall to the lateral edges of said open side is an outwardly flaring partition 4b which with the wall 4a and the upwardly extending wall 4c resting on said wall 4a defines an outwardly directed amplifier. The delivery end 6 of the sound conductor passes through a'n opening in the wall 4. and delivers directly against the vertical sounding board 4a. If desirednthe vertical wall 4a may carry a pyramidal brother-.gr-

wise shaped block 22 directly opposite the delivery end of the sound conductor to assist in diffusing the sound waves, although the sound board is effective without this deflector piece. This arrangement of an inwardly delivering sound conductor in combination with a sound board and an outwardly directing amplifier is extremely effective. Byrit, I am enabled to reproduce' the quality and resonance of the original tone without the .objectionable mechanical sounds usually liberated.

In the form of my invention4 shown. in Figs. 5 and 6, I have shown a slightly modified arrangement of tone clarifying apparatus. In this embodiment, the coupling 7 is extended downward vertically and conf 22 are connected. The sound vconductors 25 and 23 direct the sound waves in three directions against a resonant sounding board 4 correspondingy in function to the sounding board 4 but of necessarily different shape. The sound board 4 may if desired be provided with three spreader blocks 26 similar in function and shape to. the block 22 in Figs. 3 and 4. The purpose of the arrangement shown is the same as that of the arrangement in Figs. 3 and 4. A larger area over which the sound is diffused is provided, however, in the form' shown in Figs. 5 and 6. It will be understood that the tone modulator 18 is intended to be used in the form shown in Figs. 45 and 6.

Various modifications in the form and construction of my device may obviously be made, all without departing from the spirit of my invention if within the limits of theY appended. claims.

What I therefore claim and desire to secure by Letters Patent is:

l. In a sound producing machine, the combination of a cabinet open on three sides, sounding boards vertically disposed therein yductor-s 25, similar to the sound conductor and parallel to the open sides and flaring defleeting partitions extending fromv said sounding boards to the edges of the cabinet and inwardly directing sound conductors having their delivery mouths disposed in opposition to said sounding boards.

2. In a sound producing machine, the combination of a rectangular cabinet open on'tllree sides, sounding boards vertically disposed therein and parallel to said open sides and flaring defiecting partitions extending substantially diagonally from `said sounding boards to the edges of the cabinet, and inwardly directing sound conductors having their delivery mouths disposed in opposition to said sounding boards.

` 3. In a sound producing machine, the combination of a cabinet open on one side, a sounding board vertically disposed therein and having a spreader surface for diffus- 'ed from said sound board combination of a cabinet a at soundin board vertically disposed therein paralle to said open side and having a spreader surface for diffusing and disseminating the sound waves, a pair of flaring deiiecting partitions extending diagonally from said sounding board to the edges of the cabinet, and an inwardly directlng sound conductor having a delivery mouth disposed in opposition to the spreader surface of the sounding board.

5. In a sound producing machine, the combination of a cabinet, open on one side, a soundin board vertically disposed therein and parael to said open side, a pair of daring deiiecting partitions extending diagonally from said sounding board to the edges of the cabinet and. with the sounding board dividing the cabinet into compartments, an inwardly directing sound conductor having a delivery mouth disposed in one of said compartments in opposition to the sounding board and a motor disposed in an adjacent compartment.

6. In a sound producing machine, a substantially dat sound board, a sound conductor directed toward said board and an oppositely directed amplifier extended from said sound board.

7. In a sound producing machine, a substantially dat vibratory sound board, a sound conductor directed toward said board and an oppositely directed ampliier extended from said sound board past said sound conductor.

8. In a sound producing machine, a cabinet, a substantially dat vibratory sound board therein, a sound conductor having its delivery end disposed in opposition to said sound board, and an oppositely directed amplii'ier including a pair of daring partitions extending from said sound board to the open on one side,

edges of the cabinet.

9. In a sound producing machine, a cabinet, a vibratory sound board therein, an inwardly directed sound conductor having its delivery end disposed in opposition to said sound board, and an outwardly directed ampliiier including a pair of daring partitions extending diagonally from said sound board to the edges of the cabinet.

10. In a sound producing machine, an open ended cabinet, a substantially lat vibratory sound board therein, a sound conductor directed against said sound board, and an oppositely directed amplifier extendto the inclosing walls of said open side of said cabinet.

11. In a sound producing machine, a Cabinet, a vibratory sound board therein, an inwardly directed sound conductor delivering against said sound board, and an outwardly directed amplifier, including substantially flat walls extended from said sound board diagonally to the edges of said cabinet.

12. In a sound producing machine, a substantially'lat vibratory ing a conical spreader, a stationary sound conductor directed toward said board, and

an oppositely directed amplifier extendingfrom said sound board.

13. In a sound producing machine, in combination, a cabinet, a substantially dat sounding board therein, a pair of flaring defiecting partitions extending outwardly from said board, a member superimposed upon said sound board and extending outwardly toward the side of the cabinet, and a sound conductor delivering in opposition to said sound board.

14. In a sound producing machine, in combination, a cabinet, a sounding board therein, a pair of flaring deflecting partitions extending diagonally outwardly Jfrom said board, a member superimposed upon said sound'board and extending outwardly and upwardly toward the side of the cabinet, and a sound conductor delivering in opposition to said sound board.

15. In a sound producing machine, in combination, a cabinet, a sound board vertically disposed therein, a pair of Haring deilecting partitions extending diagonally from said sound board to the edges of the cabinet, and an inwardly directed sound conductor arranged in opposition to said sound board.

16. In a sound producing machine, in combination,.a rectangular cabinet, a fiat sounding board vertically disposed therein, a pair of flaring deflecting partitions extending diagonally from said sound boar' of the cabinet, and an inwardly directed sound conductorarranged in oppositiony to said sound board.

17. Ina sound producing machine, in combination, a rectangular cabinet lopen on one side, a fiat sounding board vertically disposed therein parallel to said open side, a pair of iaring deiecting partitions extending diagonally from said sound board to each lateral edge of the open side, and an i11- wardly directed sound conductor arranged in opposition to said sound board.

18. In a sound producing machine of the cabinetted horn type, the combination of a substantially fiat vibratory resonator and a sound conductor arranged in opposition thereto and an amplifier` extending therefrom.

19. In a sound producing machine, a cabinet, and a built in horn structure therein having a substantially fiat vibratory sound board at the end thereof and an inwardly directed sound conductor opposed thereto.

20. In a sound producing machine, in com` bination, a cabinet, a built in horn structure including a straight walled refiecting chamber having a transverse -flat sound board at its inner end and an inwardly directed sound conductor within said chamber and having sound board carryd to the edges its delivery mild 'dpppsite to' said sound bard. I

21. 1n a-sound 'producing lfrmhilm a cabi-- duc'ng means locad above 'said partition, a

subeamial'ly Haw boafrd 'within said www@

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