This class includes the instruments used in producing music
and includes (1) electrical music instruments, (2) automatic instruments,
and (3) those hand played. The automatic instruments and the hand
played instruments have a parallel classification so far as seems
practical, and in both the patents are divided in the usual way
into four groups, stringed, wind, rigid vibrators, and membranes.
Then follow details or features common to groups (1), (2), and (3).
This class also includes some accessory devices generally recognized
as belonging to the art or industry.
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Instruments furnishing a sound of only one pitch, even if it
might be used for musical purposes, are generally to be found in
Class 116, Signals and Indicators; Class 446, Amusement Devices:
Toys, subclasses 207-209 and 397-422; Class 472, Amusement Devices,
subclass 64; or Class 623, Prosthesis (i.e., Artificial Body Members),
Parts Thereof or Aids and Accessories Therefor, subclass 9 for larynxes.
Phonographs, unless in combination with a recognized musical
instrument, are to be searched for in Class 369, Dynamic Information
Storage or Retrieval.
Printed music and systems of notation are to be found in Class
84 (this class), Music, subclass 483.2.
Bellows and wind flow regulators, unless specifically adapted
to musical instruments are to be found in Class 60, Power Plants;
subclasses 407-412; Class 91, Motors: Expansible Chamber Type; Class
92, Expansible Chamber Devices; and Class 417, Pumps.
Many features of construction or manufacture should be sought
for in woodworking or metal-working and many details not limited
to this art in appropriate classes, such as pedals, supports, clamps,
cases, springs, etc.
For instrument supports of general application not claimed
in combination with musical instruments or structurally limited
to use with specific musical instruments, see Class 248, Supports,
appropriate subclasses.
Musical Instruments, an alternative search of the type of subject matter
generally found in Class 84 may also be found in Class 984 which is
based on a modification of the European Patent Office.
This subclass is indented under subclass 13. This is the common type of player-piano wherein the blows
are caused by small bellows called "striker-pneumatics",
one to each hammer.
(1)
Note. The patents classified herein generally disclose a
complete mechanism and often claim details of selecting mechanism
as well as the playing mechanism.
This subclass is indented under subclass 24. Limited to patents in which the claims in terms or in substance
require the striker-pneumatics to be above the keyboard.
This subclass is indented under subclass 35. The ends of the rest-rail may move through unequal distances,
so the musical effect is graduated from bass to treble.
This subclass is indented under subclass 39. The variation is due to the alternate use of two wind-chambers
holding air, respectively, at high and low tension.
This subclass is indented under subclass 33. The fulcrum of a lever is shiftable or the connections between
the pneumatic and the hammer are otherwise varied.
This subclass is indented under subclass 33. The force of the blow is systematically or periodically
varied independently of the hand-controllers or note-sheet.
This subclass is indented under subclass 50. The pneumatic train includes both primary and secondary
valves, sometimes called the "double-valve system".
This subclass is indented under subclass 50. Patents involving the position or location of tubes from
the tracker or other part and means for connecting tubes, such as
junction plates or bars.
This subclass is indented under subclass 70. Various elements between the bellows and the controlling-pneumatics,
especially reservoirs and wind-chests.