US1010249A

US1010249A - Lever for pianolas and like instruments.

Info

Publication number: US1010249A
Application number: US54727610A
Authority: US
Inventors: Wladimir Gervais
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-03-04
Filing date: 1910-03-04
Publication date: 1911-11-28
Anticipated expiration: 1928-11-28

Description

W. GERVAIS.

LEVER 1'01; PIANOLAS AND LIKE INSTRUMENTS.

APPLICATION FILED MAB. 4, 1910.

1,010,249. Patented Nov. 28, 1911.

(IWENTOR' Mam 6'6/7/016' ATTORNEYS WLADIMIR GERVAIS,

OF ST. PETERSBURG, RUSSIA.

LEVER FOR IIANOLAS AND LIKE INSTRUMENTS.

Specification of Letters Patent.

Application filed March 4, 1910.

T 0 (all whom it may concern:

Be it known that I, VLADIMIR Gnnvnrs, subject of the Emperor of Russia, and a resident of St. Petersburg, Russia, lieutenant-colonel of Russian Army, have invented a new and useful improvement in levers for pianolas and like instruments, giving strokes on the keys similar to those effected by the fingers of a pianist, of which the following is a specification.

The striking levers of the existing types of pianolas and the like mechanical instru ments, represent crude systems which cannot give the strokes of the keys that special touch, which is peculiar to the human hand. This drawback, notwithstanding all the improvements, cannot place pianolas and the like instruments on a level with the technical art of a human being.

My invention has for its object to avoid this drawback almost entirely.

On the annexed drawings Figure 1 represents a side elevation of one embodiment of my invention and Fig. 2 a similar View of a second embodiment thereof.

My improvement consists of the followingz't-he lever A between the axle 1 and the striking part 2 is out apart and both its parts are connected together by a resilient device, consisting either of spring 3 (Fig. 1) or a system of springs 3 (Fig. 2). Besides this, in order to attain various shades of the stroke, the slide 4 affords a means to in- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Patented Nov. 28, 1911.

Serial No. 547,276.

crease the stroke and give the whole system greater elasticity on the movement of the slide in the direction of the striking part of the lever and reduce the stroke on the movement of the slide in the reverse direction. In both cases of the movement of the slide 4 the pin 5 on the striking part of the lever A is retained by the

horns

6 or 6 and thereby reduces the elasticity of the stroke. In the central position of the slide 4 the pin 5 passes freely between the

horns

6 and 6 and a very elastic stroke on the keys is attained, which altogether corresponds to the finger of a human being. Besides this a rubber ball 7 is placed between the key packing 8 and the head of lever A with the object of increasing the softness in the striking part of the lever.

Vhat I claim is:

In a pianola or like mechanical musical instruments, a combination of a resilient key lever, consisting of two parts, connected by one or more springs, with a slide, overlapping the parts of said lever and having two horns, and a pin, fixed. to the one part of the lever and retained by the horns.

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

l/VLADIMIR GERVAIS. Vitnesses H. A. LovIAGUINn, A. N. TSOHENSLOFF.

Washington, D. C.