US954140A - Action for grand pianos. - Google Patents

Description

E. SCHNABEL.

ACTION FOR GRAND PIANOS.

APPLICATION FILED JUNE 25, 1909.

954,140. Patented Apr. 5, 1910.

. B UNITED STATES PATENT @FFICE.

EDMUND SCHNABEL, OF NEVJ YGRK, N. ASSIGNOR Ti} TEE AEULIAN CQDZPAN'SF, 03 NEW YORK. N.' 55., A CORPORATIQN 03: SGNIIECTI'JUT.

ACTION 35GB GRAND PIANOS.

. larlv to the repeating lever.

The. object of my invention is to provide a new and useful improved action for gran-1ft pianos which is simple in construction and in which the repeating lever is very quick,

active and responsive and in which the sensitlveness and rapidity of action is increased and the power required for operating the repeating lever decreased.

In the accompanyingdrawings in which like numerals of reference indicate like parts in all the figures: .Figure 1 is a side view of part of the action for one key of a grand piano, containing one embodiment of my invention. Fig. 2- is a plan view of the same. Fig. 3 1s a detail view of part of the underside of the repeating lever. Fig a is a vertical longitudinal sectional view parts being broken away.

Thesupport 1 is of conventional construction and is pivoted at 2 in the conventional manner. It is provided with a downwardly extending pilot or toe 3 on which the key can actto throw the support upward. The repeating lever 4 is pivoted at 5 to the standard 6 on the support and is provided at the inner end-with the cushioned stop 7, the upward movement of the innen end of the repeating lever being checked by .the L shaped check 8 on the support.

The hopper 9 of conventional shape and construction is pivoted at 10 to the support and carries an adjustable cushioned stop 11 which can rest against the check 12 pro ecting upward from the support. The spring 18 secured to the standard 6 engages the loop 14 on the hopper and draws the up- Wardly extending arm of the jack in the direction toward the check 12. The upper end or" the jack extends through and can swing in a slot 17 in the. outer end" of the repeating lever.

A loop 16 is secured to the support and extends through the s ot 17 in the repeating lever and is engaged bya wire spring 18 Specification of Letters Patent.

Application filed June 25, 1909.

Patented Apr. 5, Serial No. 504.230.

secured to the repeating lever and serving for the purpose of pulling the inner end of the repeating lever downward and the outer end provided with the slot upward. The wire spring 18 extends to the inner end oi the slot 15 where it is coiled around a transverse pin 19, the coil 20 being located. within a notch 21 in the inner end of the slot 15. From the coil 20, the arm 22, formed of a continuation of the spring wire 18. extends in the direction toward the inner end of the repeating lever preferably within 'a recess in the underside of the repeating lever, and the free end of this arm 52'' rests upon the upper surface of the head 23 on the lower end of a screw 2-1. screwed from the underside of the iepuiting lever through this lever so as to project from the upper surface of the lover. The wire spring 18 is thus sub stantially U shaped, with a long leg'above the top of the repeating lever and a short leg at the underside of the repeating lever. This screw 24 provided with a groove 25 i its head 23' for applying an instrument, tor screwi the screw from the underside through the repeating lever and this -screw also provided in its upper end with a groove, 26 to permit of applying a screw driver or other implement so as to permit of adjusting this screw from the top. By turning this screw so that it IDOVOS upward the lower arm of the gring 18 isinovcd upward and the tension of the spring is thus increased and by turning the screw down ward the tension of the spring is decreased. As the screw is provided with a groove in its upper end this adjustment of the tuisiorr of the spring can he made from above and witl'iout detrhing any of the parts.

Having described my invention what I claim as new and desire to secure by Let ters Patent is 1. in a piano action, the combination with a supportand a repeating lever, of a spring mounted upon the repeating lever and having a long shank and a short shank an adjusting means mounted on the repeating lever andengaging the short shank of said spring said adjusting means being located on the repeating lever between the point at which the spring is mounted on the repeating lever, and that end the repeating lever toward which the long f shank of the spring extends and means connecting the end as I Off the long shank of the sprin with the support, substantially as set fort 1.

2. Ina piano action, the combination with a supportand a repeating lever, of a jack ivoted to the support, the repeating lever aving a slot near one end, into which slot the upper end of the jack passes and said repeating lever also having a notch extendingfrom the inner end of this slot, a spring having a long shank and a short shank, said spring being secured to the repeating lever and part of the spring passing through the above mentioned notch, an adjusting means in the repeating lever, said adjusting means engaging the short shank of the spring and means connecting the long shank of the spring with the support, substantially as set forth.

In a piano action, the combination with asupport and a repeating lever, of a jack pivoted to the support, the repeating lever having a slot into which the upper end oil the jack passes and a notch in the inner end of this slot, a substantially U shaped spring having a long shank and a short shank, secured on the repeating lever and passing through said notch, an ad ust1ng means in the repeating lever engaging the short shank of the spring, said achustmg means being located between the point of connection between the spring and the repeating lever and that end of the repeating lever toward which the long shank of the spring extends, and means connecting the long shank of the spring with the support, substantially as set forth.

4. In a piano action, the combination with a support and a repeating lever, of a jack pivoted to the support, the repeating lever aving a slot into which the upper end of the jack passes, and a notch in the inner end of this slot, a substantially U sha ed wire spring having a long shank an a short shank mounted on the repeating lever and passing through said notch, a screw in the repeating lever adjacent to said notch and provided on the undersideof the repeating lever with ahead, the short shank of the spring resting against the inner surface of said head,.and means connecting the long shank of the spring witlrthe support, substantially as set forth.

of New York and State of New York this 23d day of June A. I). 1909.

EDMUND SCHNABEL.

Si ned at New York city in the county Witnesses:

F. H. linorrns. D. C. Hams.

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