US1191738A - Piano-stringing. - Google Patents

Description

W. G. SCHEINPFLUG.

PIANO STRINGING.

APPLICATION FILED JULY 1, 1915.

Patented July 18, 1916.

//1/ my TOR l f d/zelm 6 ja/zezzgafl z BY AITORNEYS WITNESSES UNITED STATES PATENT OFFICE.

WILHELM G. SCHEINPFLUG, OF NEW YORK. N. Y.

PIANO-STRINGING.

lVoodhaven, borough of Queens, in the county of Queens and State of New York, have invented a new and Improved Piano- Stringing, of which the following is a full, clear, and exact description.

The invention relates to pianos and similar stringed musical instruments, and its object is to provide certain new and useful in'iprovements in said instruments whereby the strings especially those in the treble re-' main in tune for a long period and when sounded produce fiageolet tones or barmonics.

In order to produce the desired result, use is made of a treble string stretched over spaced bridges and of a length which is a multiple of the length of the ordinary string which it supersedes, and an auxiliary bridge located intermediate the said regular bridges and lightly touching the string at any one of its aliquot parts.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a face view of the strings of a piano stretched over the string plate and provided with an auxiliary bridge for the treble strings; Fig. 2 is a cross section of a piano provided with the improvement; and F ig. 3 is a similar view of a modified form of the improvement.

The treble strings A of the;piano are of a length which is a multiple of the length of the corresponding ordinary treble strings now generally employed, and the said treble strings are stretched over the said bridges B and C on the string plate 1. An auxiliary bridge D lightly touches the strings A at aliquot parts of the strings. The strings A as well as the remaining bass strings E are sounded by the hammers F of the piano action in the usual manner. The treble strings A are preferably sounded between the bridge B and the auxiliary bridge D.

Specification of Letters Patent.

Patented J uly 18, 1916.

Application filed July 1, 1915. Serial No. 37,520.

It will be noticed that when a treble string A is sounded by its hammer F the entire string is caused to vibrate but owing to the interposition of the bridge D flageolet tones or harmonics are produced.

Although the improvement is shown in Figs. 1 and 2 in permanent engagement with,

the treble strings A, it is evident that the auxiliary bridge D may be made movable, as shown in Fig. 3, so as to move it completely out of engagement with the strings whenever it is desired to do so. For the purpose mentioned the bridge D is mounted to slide in suitable bearings D and is connected at its ends with levers G secured to a shaft H provided with an arm I connected by a link J with a supplementary pedal K under the control of the player. Normally the bridge D is out of enga ement with the strings A but when the ped al K- is pressed the bridge D is moved lightly into engagement with the strings A.

Having thus described my invention, I claim as new and desire to secure by Letters Patent: g

1. A piano provided with a string plate, stringscarried by the said plate, the treble strings each being of a length which is a multiple of an ordinary string, bridges'carried by the frame and over which the strings are stretched, and an auxiliary bridge carried by the plate intermediate of the first named bridges and over which the treble strings pass and engage at aliquot parts of their length.

2. A piano provided with a string plate, strings carried by the said plate, the treble strings being each of a length which is a multiple of-an ordinary string, bridges car,- ried by the plate and over which the strings are stretched, an auxiliary bridge intermediate the first named bridges and over which the treble strings pass and engage at aliquot parts of their length, and pedal mechanism for moving the auxiliary bridge in and out of contact with the treble strings.

3. In a piano, a string plate, strings car-- ried by the said plate, the treble strings each being of a length which is a multiple of the length of an ordinary string, bridges over which the strings are stretched, a bearing name to this specification in the presence of on the plate intermediate of the said bridges, two subscribing witnesses.

an auxiliary bridge slidably mounted in the bearing below the strings, and a pedal mechanism for moving the auxiliary bridge in and out of Contact with the strings.

In testimony whereof 'I have signed my WILHELM G. SCHEINPFLUG.

WVitnesses:

TI-IEO. G. HosTER, PHILIP D. ROLLHAUS.

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