US436511A

US436511A - wessell

Info

Publication number: US436511A
Authority: US
Publication date: 1890-09-16
Anticipated expiration: 1907-09-16

Description

(No Model.) 2 Sheets-Sheet 1.

O. WESSELL.

PIANO ACTION. I No. 436,511. Patented Sept. 16,1890.

Fig?! Fif 269839,- Imenvw W W {No.Model.) 2 Sheets-Sheet 2 t O. WESSELL PIANO ACTION.

No. 436,511. Patented Sept. 16, 1890.

Fliinawea: Invenr UNITED STATES 4 PATENT OFFICE.

OTTO \VESSELL, OF NEIV YORK, N. Y., ASSIGNOR TO IVESSELL, NICKEL 8t. GROSS, OF SAME PLACE.

PIANO-ACTION.

SPECIFICATION forming part of Letters Iatent No. 436,511, dated September 16, 1890.

Application filed January 24, 1890. Serial No. 8537,9 28. (N0 model.)

To all whom it may concern.-

Be it known that I, OTTO WEssELL, of the city of New York, in the county and State of New York, have invented a new and useful Improvement in PianoActions, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to piano-actions in which the jack is pivoted to a lever which is itself pivotally attached to a fixed rail and acted upon by a key-lever through either a support thereon or a connection therewith.

In the accompanying drawings Figure 1 represents in sectional elevation a key, a hammer, and all the corresponding mechanism of a grand-piano action illustrating my invention. Fig. 2 represents in sectional elevation a hammer, a key, and the corresponding mechanism of the action of an upright piano, illustrating the application of myinvention to that kind of piano.

Similar letters of reference designate cor.

responding parts in both the figures.

I will first describe my invention with reference to Fig. 1.

A designates the hammer, pivotally connected with the hammer-rail B in the usual way through a flange a.

O designates the lever to which the jack D is pivoted by a pin 1). This lever, which will be hereinafter spoken of as the jack-lever, constitutes also in this example of my invention the rest-support, havinga hammer-rest E provided upon it. The said lever C is pivotally connected with afixed rail F, commonly known as the action-rail, by means of a flange c, to which said lever is pivoted by a pin d. The said lever is also connected in this example of my invention by a sticker 0, with a block 0 secured on the key K.

G is a repetition-lever fulcrumed by a pin 6 to a post C, provided on the jack-lever O. This repetition-lever G is slotted for the jack 1) to pass through it and operate upon the knuckle A of the hammer.

The jack D is constructed with a let-off projection or arm f, which by the raising of the jack-lever and jack is brought into contact with the let-off screw f The said jack has screwed into it a regulating-screw g, which operates in connection with an abutment g,

erected upon the jack-lever O. The repetition-lever G is also represented as provided with another regulating-screw h, which stops against an abutment h on the jack-lever. U

The repetition-lever is also represented as having its spring a connected with the jacklever by a stirrup 21, and the jack-springj is represented as attached to the post O of the jack-lever and connected with the jack by a stirrup j. As thus far described, the action mechanism does not difierfrom that of other grand or horizontal piano-actions.

H designates the spring, which constitutes the principal feature of my invention, which in this example of my invention represent-ed in Fig. 1, is applied directly between the jacklever and the action-rail F. In this example the said spring consists of a light coil-spring applied above the said rail and under said lever, the lower end of the said spring being set in a little pocket It, provided in said rail, and the upper end entering a small cavity provided for it in the bottom of the j ack-lever.

The pockets or cavities is k may consist, simply, of round holes, of a sizejust sutficient to receive the ends of the springs, bored, respectively, in the rail F and lever C. The spring thus constructed and applied is easily put in place and securely retained therein.

I will now describe my invention as applied to the upright action illustrated by Fig. 2. In this example of my invention the hammer A and the jack-lever O, to which the jack D is pivotally attached, are both pivotally connected with one railB, thehammer being pivoted to a flange a, secured to said rail, and the j ack-lever to a flange c, secured to the said rail. The spring H which constitutes the principal feature of my invention, is applied between the jack -lever O and a specially-provided fixed rail F. The said spring H is like that shown in Fig. 1, consisting of a coil and having its lower end dropped into a small pocket It in the said rail, and its upper end received in arecess 7c in the bottom of the jack-lever. The jack lever O in the last-described example is operated upon by the key K through a block 0 which presses against the bottom of the said lever.

In both the examples of my invention it will be seen there is a spring H applied directly between thejack-lever and afixed rail in such 2. The combination, with the lever to which 15 manner as to exert a gentle upward pressure the jack is pivoted and a fixed rail, the rail against the jack-lever, easing the touch of the being provided in its upper face with a seat player on the key, both in first striking the for the lower end of a coil-spring, and the 5 note and in repeating. lever being provided in its under face with a What I claim as my invention, and desire seat for the upper end of the coil-spring, of a 20 to secure by Letters Patent, iscoil-spring removably secured with its ends 1. The combination, with the lever to which in engagement with said seats, for the purpose the jack is pivoted, and a fixed rail provided substantially as set forth.

:0 with a pocket, ofa coil-spring the lower end of which is locatediin said pocket in the rail and the upper end of which is seated against Witnesses: the bottom of the said lever, substantially as FREDK. HAYNES, and for the purpose herein described. GEO. BARRY.

oTTo WESSELL.