US320556A

US320556A - Chaeles m

Info

Publication number: US320556A
Authority: US
Publication date: 1885-06-23
Anticipated expiration: 1902-06-23

Description

(ModeL) G. M. HATTERSLEY.

UPRIGHT PIANO. No. 320,556. I Patented June 23, 1885.

Fig. 1

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CHARLES H. HATTEBSLEY, OF TREN'ION, NE\V JERSEY.

UPRIGHT PlANO.

EPECIFICATION forming part of Letters Patent No. 320,556, dated June 23, 1885.

Application filed January .10, 1885. (Model) T0 at whmn it may 00ncern:

Be it known that I, CHARLES M. Hrrrnns- LEY, of the city of Trenton, county of Mercer, and State of New Jersey, have invented a certain new and useful Improvement in Upright Pianos, of which the following is a specification, reference being bad to the accompanying drawings, in which drawings similar parts are indicated by similar letters of reference.

It has been supposed heretofore that the strings of a piano take their tone from the wood through the bearings, and frames as heretofore constructed have been in some instances provided with agraffes,affording abearing for the strings, and passing down through apertures in the frame, or in some pianos the frame has been made in two pieces, andastrip of wood interposed between said piecesresting upon tle wooden wrest-plank and provided with a metallic hearing at the top. I have discovered that the strings do not take their tone from the bearing, but from the pressurebar, which bar communicates by its screws with the wooden wrestplank. This discovery has enabled me to use a very simple, inexpensive, and efficient bearing, dispensing with agraffes, which are liable to sing or whistle, and en abling me to use a solid plate, thus increasing greatly the strength of such plate, and at the same time I am enabled to have the strings take their tone from the wooden wrest-plank.

My invention is shown in Figures 1 and 2 of the drawings.

' Figure 1 is a top view of a part of an upright piano, showing a part of the frame, and also the strings, pressure-bar, and bridge.

Fig. 2 is a longitudinal sectional View of Fig. 1.

is the iron plate. B B are the screws which C C are the In Fig. 1, A pressure bar. hold the pressure-bar in place.

tuningpins. D D are the steel strings. E is the bridge, and F is the bearing-bar. In

Fig. 2 these parts are shown in sections, and the wrest-plank G underneath the plate A is also shown in section. The screws B, which support the pressure-bar B, are also shown passing through the plate A and into the wood of the wrest-plank G. The plate A is made of metal and is solid, and extends over the wrest-plank G, and is provided with a shoulder, A, immediately in front of the bearing-bar. This shoulder is made in one with the plate, and affords a seat for thebearing-bar F. This bearing-bar I preferably make in one continuous round rod; but it is not essential that it should be continuous, as if divided into sections it will perform its office as well. The shoulder A, I also prefer to make continuous; but it is not essential to my invention that it should be continuous, as interruptions of it, provided sufficient be left to form a seat for the bearing-bar, would not alter its nature nor impair its function.

\Vhat I claim as my invention is- The continuous metal plate A, provided with the shoulder A, made in one therewith, in combination with the bearing-bar F, the pressure-bar B, held by screws B, passing through openings in the plate directly into the wrest-plank G, substantially as shown and described.

C. M. HATTERSLEY.

\Vitnesses:

S. B. HUToHINsoN, A. BUCHANAN.

B is the 0