Improvements in and relating to Piano Pedals.
Year: 1898

page_text: Date of Application, 17th Feb., 1898-Accepted, 4th June, 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Piano Pedals.
I, WILHELM THEIN, of 50, Meinkenstrasse, Bremen, in the Empire of Germany,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to piano pedals and its object is to provide an improved
arrangement of connecting mechanism between the pedals and the devices which
alter the resonance of the piano, the new arrangement being of metal and
obviating all the creaking and grating noises common in the wooden parts at
present employed while also being simple and compact.
The accompanying drawings illustrate the method of carrying the invention
into effect as follows:-
:-
Figure 1 is a plan of portion of the pianoforte shewing the improved mechanism
in place.
Figures 2 and 3 are partial views on an enlarged scale of details of the
mechanism.
The two pedals a a', are of ordinary construction and are attached to the squared
ends of two metal rods by set screws and these rods rotate in metal bearing
clips dc and dc attached to the piano frame, the said clips being provided with
leather or other suitable linings to absorb noise or vibration. The ends g g¹ of the
rods are cranked and flattened as shown and drilled at 2, the holes thus produced
fitting loosely over the ends j of the spindles ff which operate the usual devices
for altering the resonance, and to attach these ends gg' to the ends j metal washers
such as Figure 2 with interleaved leather discs may be employed. To return
the pedals a a¹ to their normal positions two springs ee¹ are arranged parallel
with each bar b and b¹ and these springs are attached at one of their respective
ends to the framework of the piano and at the other of their respective
ends h, h¹, to the metal rods b b¹.
In operating the improved pedals the depression of say the pedal a partially
rotates the rod in its bearing cd and by means of the cranked end g transversely
This
moves the spindle f and operates the device for producing the resonance.
rotation of the rod a torsionally displaces the two springs ce and on the release
of the pedal these springs at once reset the whole mechanism in the initial
position.
The special arrangement of springs and the metal rods, bearings, and connections
provide a compact arangement occupying little space and also giving no disagree-
able creaking or grating noises when in use while being cheaper to manufacture.
my said
Having now particularly described and ascertained the nature of
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1, In piano pedals the provision of two metal rods in metal bearings and
rotated by the nedals against the torsional effect of springs parallel with them, and

page_text: operating by cranks, integral on the rods, the devices usually employed to alter
the resonance of the instrument, as a means for obviating the noise and providing
a compact and cheap arrangement substantially as hereinbefore described.
2, The improvements in and relating to piano pedals consisting in leather lined
metal bearings and fastening washers substantially as herein before described, with
reference to the accompanying drawings.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.