US905855A - Phonographic horn. - Google Patents

Description

L. H. DEVINEAU. PHONOGRAPHIG HORN. APPLICATION FILED MAR.16, 1908.

Patented Dec. 8, 1908.

- ports the 'reproducer 3.

engagement with the screw threaded shaft 6,

and exact description, reference being had swivel v comes in the line of the center of gravity of the horn.

secured. upon the reproduoerin any con- LOUIS H. DEVTNEAU, OF CLEVELAND, OHIO.

PHONOGRAPHIC HORN.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed March 16, 1908. Serial No. 421,394.

To all whom it may concern:

Be it known that I, LOUIS H. DEVINEAU, l a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Phono ra hio Horns, of which the following is a fulT, c ear,

to the accompanyin drawings.

My invention relates to phonographic horns and the means for en porting the same in cooperation with the phonograph.

The ohjcfetoi the invention is first, the provision of a support which will distribute the weight of the horn upon the members which support it, at the same time allowin thahorn tobe freely rotated in a horizonta plane; second, the arms ement of the su porting portion of the om so that t e Reference should be had to the accompanying drawings, in which Fi ure 1 is a side elevation of a phonograph, showing my horn supported in proper position; F 1%. 2 is a plan view of Fig. 1, the

ell of the ornbeing in icated in dotted lines; Fig. 3 is a side ole tion, partly sec tional, oi the horn and swiveled section; Fig. 4; is a sectional elevation of the swivel joint; Fig. 5 is a similar view sectioned without reference to the nature of the inaterial preferred.

The phonograph shown is of ordinary and well known construction, and may be briefl stated as comprising the casing 1, whici contains the o crating mechanism and which is surmounte by a carriage 2 which sup- This carriage is mounted 'upon suitable tracks 4 and 5 along which it is adapted to travel by reason of its in a manner well known in the art. This shaft 6 actuates a mandrel 7 which in turn supports the record cylinder. The mandrel is suitably supported in stationary brackets mounted upon the casing 1.

The horn comprises two hollow elbows 8 and 9, which are connected by a swivel joint, and a flaring bell carried by the larger end of the up or elbow. The two elbows are so swiveled that the u per part 9 mayrotate with res ct to the ower part .8 and yet be insepara 1y held thereto. The lower part or supportingsection 8 is adaptedto be lie in this same plane.

venient manner. The ordinary reproducer is formed with a tubular portion extending from its upper face, and in the form shown the lower portion of the member 8 surrounds such tubular rojection and is secured in place thereon y a set screw as indicated at 10. The upper elbow, or turning section 9 of the horn, is given the form shown, the upper )ortion being formed with an enlar ed aring bowl which engages the smaller en of the bell 15 and securely holds it. The bell is made of light material, as paper, or aluminum, for example. The lower part or smaller end of the elbow 9 is formed with an annular rib 11 and a shoulder 12. The

upper end of the member 8 is sleeved over- 13 which engages the ri 11, while the end 3f the mom or 8 abuts against the shoul- The described joint maybe made by first forming the shoulder and rib upon the memher 9 then placing the upper part of the member 8 over the lower part of the member 9, the member 8 being sufllciently great in diameter to slip over the ridge 11, and then applying pressure to the sleeve by means of suitable dies so as to conform the sleeve 8 to fit around the rib 11 and abut against the flange 12. It will be seen that the members 8 and 9 are held securely together and yet relative movement between them is permitted.

The support is designed in such manner that when it is mounted upon the reproducer the plane of the vertical axis of the swivel joint will substantially divide the distance between the points of support of the reproducer. In practice, the machines are so constructed that the axis 'of the mandrel shaft which supports the record cylinder will also Moreover, the proportions of the bell and elbow. 9 are such that the center of gravity of the combined horn will likewise lie in the plane of the vertical axis of the swivel joint.

From the above description it is clear that a single vertical line will pass through the center of gravity of the born with its elbow, and will substantially divide the distance between the points of support of the sound. reproducer and pass substantially through the axis of the mandrel. Therefore, it follows that the weight of the horn will be equally borne by the front and rearrails whichsuploid, or any analogous substance.

lows the easy formation of the swivel joint. .Mor'eover, I have found that a non-metallic substance, such as mentioned, practically port the carriage 5. This will prevent unequal friction between the frame and the rails 4 and 5, and thereby secure a more even and smooth running of the reproducer along the record cylinder. Again, there will be no bending effect upon the swivel joint, due to the fact that the center of gravity of the horn lies in the vertical axis of the joint, therefore the horn may be turned in any desired direc.

tion and have a perfect balance at all times.

The material from which the elbows are made is non-metallic and may be hard rubber (which is six times lighter than brass or steel), papier nach, compressed fiber, cellu- This alhaving oppositely disposed elbows, a swivel -1 between said elbows and a horn mounted upon said support extending upon both sides of the point of support.

4. In a phonograph, the combination of a reproducer and a laterally extending horn sup orted thereby, said horn extending upon bot sides of the point of its support and having a swivel in the plane of the center of gravity of the horn. j

5. In a phonograph, the combination of a reproducer and a laterally extending horn supported thereby, said support comprising members swivelly connected together, said horn extending upon both sides of the swivel joint.

6. In a phonograph, a reproducer, a member mounted upon said reproducer, a second member swivelly connected to the first memher, and a horn supported by the second member extending laterally upon both sides of the support of the first member.

7. In a phonograph, the combination of a reproducer, means for supporting said. reproducer, and a horn supported upon said reproducer, said horn being swiveled in a vertical plane passing between the points of support of the reproducer and extending laterally upon both sides of the point of support.

8. In a phonograph, the combination of a reproducer, a horn supported u on said reproducer, said horn being swive ed about an axis which passes through the center of gravity of the horn.

9. The combination with a phonograph reproducer, of a horn having a swivelsubstantially in the line of the center of gravity v v of the horn.

10. In a phonograph, a reproducer, means for supporting said reproducer, a horn support carried upon said reproducer, an elbow carried by said support, and a bell carried by said elbow, said support and elbow being swiveled' together in a vertical planewhich passes through a point between the points of the support of the reproducer, and also through the center of. gravity of the horn.

11. In a phonograph, the combination of a reproducer, a support mounted upon said reproducer having oppositely disposed elbows, said horn being swiveled intermediately of elbows in a lane which passes through the center of gravity of the horn.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

LOUIS H. DEVINEAU.

V Witnesses;

ALBERT H. BATES, A. J. HUDSON.

Images