US486013A - Philip wuest - Google Patents

Description

(No Model.)

P. WUEST, JI'. SOUNDING BOARD POR PLANOS.

No. 486,013. Patented Nov. 8, 1892.

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'PHILIP VVUEST, JR., OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CHRISTOPHER J. HEPPE AND FLOREN OE J. HEPPE, OF SAME PLACE.

SOUNDlNG-BOARD FOR PIANOS.

SPECIFICATION forming part of Letters Patent No. 486,013, dated November 8, 1892.

Application tiled August 27, 1892. Serial No. 444,261- (No model.)

To all whom it may concern:

Be it known that I, PHILIP WUEST, Jr., a citizen of the United States, and a resident of Philadelphia,Pennsylvania, have invented certain Improvementsin Sounding-Boards for Pianos, of which the following is a specification.

The object of my invention is to increase the vibration of the sounding-board of upright pianos. This object I attain in the following manner, reference being had to the accompanying drawings, in which- Figure l is a rear view of the piano with the back-frame removed, showing the rear of the sounding-board. Fig. 2 is a face view of the sounding-board and frame, showingr the arrangement of strings. Fig. 3 is a vertical sectional view of the sounding-board, and Fig. 4E is a perspective view of one of the weights.

It is desirable in the manufacturing of upright pianos to providea sounding-board that will sufficiently vibrate to give the tone required and at the same time be strong enough to withstand the strain placed uponit. Pianos have been made with very thin soundingboards, and while these sounding-boards will have sufficient vibration they nevertheless are too weak for the purpose and frequently crack and are 'I thus destroyed, and consequently thick sounding-boards have come into general use, as the depth of tone has been sacrificed for strength.

The object of my invention, therefore, is to construct a thick sounding-board that will have the necessary vibration without weakening the same and without adding materially to the cost of the piano.

A is the frame of the piano.

B is the sounding-board mounted in the frame, as usual.

D is the metallic frame, to which are attached the strings. I have shown in the drawings the strings arranged in a peculiar manner; but it will be understood that this simply illustrates one arrangement of strings, and as the arrangement of strings is immaterial itwill be understood that other arrangements may be used without departing from my invention.

As shown in Fig. l, the sounding-board B is bound by a fra-me D and supported by a series of inclined ribs d, running at right angles to the grain of the wood comprising the sounding-board. I secure to the back of the sounding-board a series of weights E, as clearly shown in Figs. l and 3. These weights are preferably of the form shown in Fig. 4 and so secured to the sounding-board that they do not interfere with the tone of the instrument by providing Very little contactsurface. I preferably arrange the weights in a series and grade them from light to heavy, attaching the light weights to the sounding-board back of the treble-strings and gradually increasing their weight and4 attaching the heavy weights to the soundingboards directly back of the bass-strings, and

the weights are arranged at such a distancel apart that their area of vibration will encompass the entire vsounding-board. It will be understood that different forms of weights may be used and weights differing in size, depending upon the character of instrument to which they are attached. Thus it will be seen that by attaching the weights to the sounding-board the vibration of the sounding-board is increased, owing to the increased weight at the points indicated, and consequently the tone of the instrument is greatly improved, combiningthe advantages of a thin sounding-board with the advantages of athick sounding-board.

I claim as my inventionl. As a new article of manufact-ure, a sounding-board for upright pianos, having a weighted center for the purpose of increasing its vibration, substantially as specified.

2. The combination, in an upright piano, of the strings and a sounding-board, with weights attached to the sounding -board, whereby its vibration is increased, substantially as described.

3. The combination, in an upright piano,

of the frame, the strings, and the sounding- IOO el. The combination of the sounding-board l name to lhis specification in thepvesence of Wxth a Weight or Weights having' a hollow ceutwo subscribing Witnesses. ter and small boaring-Surface,with means for attaching the Weights to the sounding-board PHILIP IVUEST, JR. 5 without detraoting materially from the tone, lVitneSSeS:

substantially as described. WILLIAM M. STEWART, Jr.,

In testimony whereof I have Signed my HENRY I'IOWSON.

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