US739380A

US739380A - Piano-plate.

Info

Publication number: US739380A
Application number: US14168203A
Authority: US
Inventors: Wilhelm Bieger
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-02-03
Filing date: 1903-02-03
Publication date: 1903-09-22
Anticipated expiration: 1920-09-22

Description

No. 739,380. PATENTED SEPT. 22, 1903. W. BIEGER.

1 PIANO PLATE.

APPLICATION FILED FEB. 3.1903. 110 MODEL.

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witnesses.-

W. BIEGBR.

PIANO PLATE.

APPLICATION FILED F113. 3, 1903.

PATENTED SEPT. 22, 1903.

3 SHEETS-SHEET 3.

ll HR UNITED STATES Patented September 22, 1903.

PATENT OFFICE.

WILHELM BIEGER, OF HEILBRONN-ON-THE-NEO KAR, GERMANY, ASSIGNOR OF ONE-HALF TO WILHELM RUDOLPH, OF GIESSEN, GERMANY.

PIANO-PLATE.

SPECIFICATION forming part of Letters Patent No. 739,380, dated September 22, 1903.

Application filed February 3, 1903.

To all whom it may concern.-

Be it known that I VVILHELM BIEGER, a subject of the King of Wiirtemberg, residing at Heilbronn-on-the-Neckar, in the Kingdom of Wiirtemberg, German Empire, have invented certain new and useful Improvements in Piano-Plates, ofwhich the following is a specification.

My invention relates to improvements in piano-plates.

In fitting piano-plates of prior constructions the sounding-board bridge is secured directly to the sounding-board and the iron bars for connecting the hitch-pin plate to the wrestpin plate are so arranged that they only oppose the pull of the strings on one side, so that a strong wooden or iron structure behind the sounding-board is necessary.

The present invention relates to a pianoplate of such construction that a one-sided pull of the strings is avoided, the pull being transferred to the main portion of the plate i. e., to the dead-poinb-so that there is no leverage. This is effected by iron bars being provided between the sounding-board and the sounding-board bridge for the purpose of directly connecting the hitch-pin plate with the wrest-pin plate below the level of the strings.

The accompanying drawings illustrate one form of the invention.

Figure 1 is a plan of the plate located on the sounding-board with stretched strings. Fig. 2 is a plan of the plate Without the stringing. Fig. 3 is a section taken on the line A A of Fig. 2. Fig. 4 is a section on the line B B of Fig. 1.

As Fig. 1 shows, the sounding-board bridge Ct is not secured directly to the soundingboard I), but rests on the stiffening-ribs c of the board I). These ribs in prior constructions are not located, as here, on the top of the board, but on the under side or back. It is not, however, absolutely essential according to the present invention to arrange these Serial No. 141.682. (No model.)

wooden ribs 0 on the top of the board, as the 5 figure shows. They may also be located, as formerly, below-that is, on the under side of the sounding-boardand between the bridge a and the latter blocks, wooden rosettes, or the like are provided, so that the soundingboard bridge is elevated a suitable distance from the board in order to furnish sufficient space for a series of lower bars d. The arrangement of these'bars d, Fig. 2, forms the essential feature of the present invention. As is seen from the drawings,they connect the hitch-plate pin e directly to the Wrest-pin plate f below the strings and are so located that the sounding-board bridge alies between the lower bars 61 and the ordinary upper bars g.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. The combination in a piano, of a plate, a sounding-board, asounding-board bridge and upper bars with lower bars the latter arranged between the sounding-board and the sounding-board bridge and directly connected to the hitch-pin plate and to the wrest-pin plate below the level of the strings, substantially as set forth.

2. In a piano, the combination of a plate, a sounding-board, a sounding-board bridge,upper bars and lower bars the latter arranged between the sounding-board and the sounding-board bridge and directly connecting the hitch-pin plate to the wrest-pin plate below the level of the strings, with strengtheningribs provided on the top of the soundingboard to serve as support for the soundingboard bridge, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILHELM BIEGER.

Witnesses:

ALBERT FRITZ, ERNST ENTENMAN.