US821288A - Repetition piano-action. - Google Patents

Description

' PATENTED MAY 22; 1906. H. HAUSER.

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wm ma H. HAUSER. REPETITION PIANO ACTION. APPLICATION FILED MAR. 30, 1905.

. sists in the repetition piano- -UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed March 30, 1905. Serial No. 252,809.

To aZZ whom, it may concern.-

Be it known that I, HENRY HAUSER, a citizen of the United States, residing at New Haven, in the county of New Haven and Stateof Connecticut, have invented certain new and useful Improvements in Repetition Piano-Actions, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to new and useful improvements in pianoactions, and has for its object, among other things, to provide a repetition action for upright pianos in which the hammer will be caused to repeat its blow upon the string with the minimum movement of the key, as well as to accomplish this result by mechanism so designed as to be economical to construct and assemble, simple in operation, and which at the same time will contain all of the advantages of certainty of action and increased general efliciency.

To these and other ends my invention conaction having certain details of construction and combination of parts, as will be hereinafter described, and more particularly pointed out in the claim.

Referring. to the drawings, in which like numerals of reference designate like parts in the several figures, Figure 1 is a side elevation of my improved device, illustrating the relativeposition of the parts when at rest.

Fig.2 is a side elevation illustrating the parts in their relative position just before the hammer is to be actuated by the repetition mechanism. Fig. 3 is a'side elevation with the parts in the relative positions occupied b them after the butt has been operated by the repetition mechanism. Fig. 4 is an enlarged plan view of the repetition-lever, and Fi s. 5 and 6 are elevations of modified forms of the repetition connection.

In the drawings the numeral 1 designates the key 2, the action-rail 3, the damper-lever, which is pivotally connected with said. actionrail; 4, the damper; 14, the damper-stop rail, which limits the backward movement of the damper 5, the string; 6, the hammer; 7, the hammer-shank, which is fixed in the butt 8, that is also pivotally connected with said action-rail 9, the buffer, which is rigidly secured to said butt 8, and 1 0 the hammer-check, which is secured by the rod 11 to the wippen 12, also pivotally connected to said action-rail. Secured to the key upon the top thereof is the adjustable capstan-screw 13, which engages the under side of the wippen 12. Pivotally secured to the flange 15, fixed to the wippen 12, is the jack 16, that is normally pressed toward the action-rail by the spring 17 and the heel of which engages in its movement the adjustable stop 18. The damper is actuated by the rod 19, fixed to the wippen and engaging the lower end of the damper-lever 3, .said damper being normally held against the string 5 by the sprin 20.

The parts hereinbefore descri ed form no part of the present invention and operate in a wellown manner'i. e., by depressing the key the wippen is oscillated upon its pivot-mounting, and the jack wnich engages the butt 8 oscillates said butt and moves the hammer forward, so that it strikes the string 5, at which time the bufier 9 engages the hammer-check 10, as shown in Fig. 3, to prevent vibration, and when the heel of the jack 16 engages the adjustable stop 18 it is thrown outwardly and disengaged from the butt and the spring 21 returns the butt and hammer to their original positions. During the aforesaid oscillation of the wippen the rod 19 engages the end of the damper 3 and lifts the damper away from the string; but immediately upon the return of said hammer and wippen to their original positions the rod is released from said lever and the spring 20 oscillates said damper-lever 3 and throws the damper forward, so that it engages the string. When the heel ofthe ack 16 has been disengaged from the adjustable stop 18, the spring 17 throws the upper end thereof forwardly, so that it again engages the butt 8 ready to impart to the hammer another movement. Under this construction a repetition blow can only be struck with the hammer when the end of the jack again engages the butt, as shown in Fig. 1, which necessitates the return of the key to its original position, and to provide means whereby this repetition blow may be struck without returning the said key to its initial position the mechanism about to be described and forming my invention has been designed. This mechanism comprises a repetition-lever 22, which is pivotally secured to the flanges 23 on the wippen and is provided with a hole 24 therethrough, through which passes the rod 19, and provided upon its outer end with an adjustable stop 25, which is normally depressed by a spring 26, connected to said lever by a cord 27, a stoprail 28, and a connection 29, which is shown in Figs. 1, 2, and 3 as pivoted at its upper end IIO to the butt 8 and resting upon. the bar 30, forming part of the action-rail and lying between said action-rail and jack.

When the key is depressed, the repetitionlever moves with the wippen without being actuated in relation thereto until the wippen has nearly completed its movement, when the repetition-lever engages the stop-rail and the forward end thereof is slightly depressed in relation to the wippen. \Vhen the pressure upon the key is removed, the wippen returns to its original position and during the first part of this return movement of the wippen 12 the repetition-lever 22 is actuated by the spring 26 and through the auxiliary jack 29 holds the hammer up near the string, and the jack 16, moved by the spring 17, engages the butt ready for another blow, at which time the further actuation of the key will operate the hammer and strike the repetition blow with but a slight return movement of the key.

The stop-rail 28 is supported by the screws 34 between the heads thereof and the fixed collars 36 and is adjustable vertically by the threaded engagement of the screws 34 with l the studs 35, fixed in the action-rail 2.

The connection 29 may be constructed and mounted in various ways aside from that shown in Figs. 1, 2, and 3, and to show the possibility of such modifications I have illus trated a connection 29 in Fig. 5, which is round in cross-section. and movable within lugs 31, fixed to the action-rail 2, and in Fig. 6 I have illustrated a connection 29 as being secured to a plate 32, fixed to the action-rail 2 by links 33.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a pianoaction, the combination with the action-rail; of a pivotally-mounted butt, having a hammer connected therewith; a wippen pivotally secured to said action-rail; a jack connected with said wippen and ad apted to engage said butt; a repetition-lever pivotally secured between its ends to said wippen; spring means connected with said wippen and engaging one end of said repetition lever; a stop-rail for limiting the movement of said repetition-lever and adjustable in the path of the free end thereof; and an auxiliary jack between said repetition-lever and. butt, said auxiliary jack having contact with and adjacent to the free end of said repetition lever and lying between said action-rail and stop-rail.

In testimony whereof I a'lfix my signature in presence of two witnesses.

HENRY HAUSER.

Witnesses:

GEORGE E. HALL, FRED L. Woon, Jr.

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