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Specification 1, title of the invention]
Musical instrument
6, “The invention relates to an instrument, more particularly, to US Pat. No. 3,515,760, which
was established on Apr. 25, 1967. The invention relates to a pulsating rotor of the type shown in
the sound attenuating drive in the evening). The invention is described in the context of musical
instruments, and more particularly, in U.S. Pat. No. 3,515,760 (name of the invention-a pulsating
drive in a pulsating loop) established on April 25, 1967. Relates to the type of pulsating rotor
that is being Such a pulsating rotor is an acoustic link between the loudspeaker output of the
electric instrument and the room or space where the sound is perceived by the listener. The
actuating element of the pulsating rotor is a rotating acoustic channel whereby the sound
dissipation pattern is rotated to deliver the desired EndPage: 3 pulsing or phase shift effect.
Pulsating rotors of the general type disclosed in the aforementioned U.S. Patents are widely used.
These-have two basic-usage modes. In the so-called free standing configuration disclosed in the
aforementioned patent, the pulsating rotor is provided between the separated panels or
diaphragms of the speaker cabinet. The speakers are provided on one panel coincident with the
axis of the rotor and on the opposite panel side, the zero loudspeakers being aligned with the
throat of the rich channel through the large opening. In the so-called built-in arrangement
disclosed in U.S. Pat. No. 3,245,284 (name of the invention-Rotor drive in a pulsation device) of
Apr. 12, 1966, the pulsation rotor consists of a single panel. It is mounted on one side and the
other is on the other side. In the so-called built-in arrangement disclosed in U.S. Pat. No.
3,245,284 (name of the invention-Rotor drive in a pulsation device) of Apr. 12, 1966, the
pulsation rotor consists of a single panel. It is mounted on one side and the other is on the other
side. The vc, which can serve as an out-of-frame support for the pulsating rotor, has a generally
U-shaped yaw or bracket attached to the panel. Panels with pulsating rotors and loudspeakers
are typically mounted on the console by the manufacturer of the organ. Is the organ
manufacturer usually responsible for the speaker's rear enclosure? Because of the pulsating
effect, the pulsating effect is not diluted by the rear noise. Aside from the problem of the
loudspeaker's proper rear enclosure for pulsation generation in the strongest state, there are
noise problems with this type of pulsation unit. One of them is the flutter effect due to the yoke
or bracket having a considerable width.
Thus, the yoke or bracket is twice as many acoustic impedances for each rotation? Act as a baffle
or reflector to impose. Although slight, undesirable flutter or rattling occurs. Other problems are
axial sound propagation and mechanical amplification, which is most noticeable at low speeds
and during rotor speed changes. Noise due to belt slip and lateral motion is controlled by
adjustment of the motor bracket and as much as possible of the pulley belt. Heretofore, complex
noise shut-off rocking motor bracket configurations have been provided, but have not always
been stable at certain panel orientations. The main objects of the present invention are not only
to show excellent music characteristics on noise attenuation, fluttering and rear speaker
sounding, but also light weight, easy assembly, standardization of parts, reduction of the number,
ease of pulley adjustment Another object of the present invention is to provide a simplified
pulsator with excellent mechanical characteristics. To achieve the above objective, a novel
assembly of shaft and bearing is provided in which the shaft end is engaged with the thrust
bearing surface of the bearing with a positive bias. Noises and squeaks are largely eliminated. In
the built-in configuration, the same five angled rods, which can be quickly attached to the frame
outside the machine frame, work to support the entire tip-like bearing via the noise-preventing
neoprene patch. The same arrangement of bearings and packings is provided at the end of the
machine frame supported by a simple strap that spans the mouth of the speaker and rotor throat.
In a zero free configuration where controlled axial end thrust is applied to the shaft by taking
advantage of the spring characteristics of the angled rod, the bearing and the packing of the
same configuration, both the panel and the partition are both bulkheads However, the shaft itself
has not only a change in the distance of the spring, but also the positive effect between the shaft
end and the thrust bearing surface. Internal spring that functions to provide the necessary
positive bias to ensure mechanical contact. The outboard hub support rods are so slender that
they produce minimal acoustic impedance and so flutter or rattling effects are minimized. In
order to minimize the transmission of noise on the pulley belts, a biconical acoustical damping
pad can be motorized to a linearly moving adjustment bracket? A simplified motor mounting
bracket is provided for mounting. Under normal operation, the weight of the motor is supported
with very slight contact at the top of the biconical pad to minimize total noise transmission to the
The conical structure results in an increasing spring constant 會 as a function of displacement, so
that an adequate impact support is obtained despite the minimal contact under normal operation.
The pad is interposed between the adjustment bracket and the motor rather than between the
adjustment bracket and the panel. Adjustment page EndPage: 4 parallel slotted rackets, making
stable belt tension adjustment as simple as possible in all arrangements of panels. A very light
weight, only molded expanded polystyrene cap t-7 'Cid retainer is provided to provide an
effective rear enclosure for the speaker. The light weight and elastic properties of polystyrene
normally cause noise as well as re-emission of sound, but by applying a compressive load to the
cap or the squeeze clamp, this cap is quite similar to that of a heavy weight enclosure Act as a
rigid body of equal mass. The compressive load is easily mounted by means of a plate mounted at
the rear of the loudspeaker magnet, in FIG. 1C, mounted on one side of the panel so as to rotate
about an axis X perpendicular to the panel 12 A pulsating rotor 10 is shown. A loudspeaker (FIG.
5) is provided coaxially on the other side of the panel. The rotor 10 has its throat end aligned
with the loudspeaker through the panel opening 16 vil-and a laterally open mouth which
provides rotational noise all in a well known manner? An angled acoustic channel 14 is provided.
The rotor 10 is made of lightweight molded stretch polystyrene which is dynamically balanced to
provide stable rotational characteristics. This lightweight construction minimizes inertia to the
fast changes required by musicians. The rotor is rotatably supported on a single shaft 1 B by a
pair of neoprene perforated patches 20. These patches are attached to both ends of the rotor 22
at the center of the rotor. At their inner ends, these pads are tabbed or frusto-conical shaped and
fitted into the tapered recesses 24 corresponding to the hubs of the rotor. The packings 20
should all be fixed in place, in case there is no compressive load. Patzkin provides high acoustic
impedance and limits noise transmission to the rotor, as well as proper shock or shock
attachment to the rotor. The zero-axis end of the washer 26, which positions the rotor on the
shaft, protrudes from the rotor and is received by the low-friction plastic bearing cup 2'8. The
bearing cup has a tapered seat on the rounded end of the shaft.
The bearing cup 2B is attached to a neoprene support pad 5017C. The rotor is easily supported
by providing mounting holes in the support bracket of the support patt 50. One hole 52 is
provided in a plate 54 extending diagonally across the panel opening 16 and the other hole 56 is
formed in a blade plate 58 at an axial end outside the machine frame. Supported by five spider
legs 40 on the hub plate. Each spider leg consists of a light rod bent at its center at an angle
slightly smaller than 90 °. The spider legs are stamped near their ends to provide projections 42
on the plane defined by the bend of the rod. A projection 42 at one end serves to attach the
spider leg to the panel 12 and a projection at the other end serves to attach the spider leg to the
plate. The spider legs are symmetrical in order to simplify the configuration. Each of the spider
legs is attached to the panel 12 by stop washers 44 and speed nuts 46. The cover 50 is attached
by being interposed between the recessed pad 4 '8 of the speaker cover 50, the soft paper gasket
52, and the channel and the speed nut. The cover 50 is described in more detail below. The ends
of each of the spider legs outside the machine frame are arranged in a generally triangular shape
around the mounting hole 56, along with the other cooperating spider legs that extend obliquely
to the axis X of the rotor (FIG. 2). Ru. The knobs are cut and stamped (FIG. 5) to form five
nodging attachment points to the five spider legs. These five mountings are made identically but
angularly spaced. A portion of the attachment is formed by two spaced parallel notches 54, 56
defining a strap 58 therebetween which is bent in one direction, for example, across the hub
plate. The other part is a notch between the notch 54 and the end of the hub plate? It is formed
by embossing and extending in the opposite direction and extending in the opposite direction.
The fifth portion of the mounting portion is formed by providing 64 arc-shaped depressions that
can be embossed between the inward cut-outs 56 and the holes 62 in the same direction as the
outward depressions 60. The spider leg is inserted from the outer end through the trap 58,
across the hole 62 and into the mounting until it abuts against the end of the hole. 42. Its
projections by turning the spider leg. (L'S, the spider legs are pushed into the strap 5B by
interaction until they are slightly bent.
Very (heavy, non-heavy joints, despite simple and quick connections. The five pre-assembled
spider legs and hub plate 58 are easily mounted to the pre-assembled rotor, bearing cups 28 and
mounting panels on top of the packing 50. The support pad 50 is combined with the rotor pad to
provide noise protection as well as shock protection. In the assembly position, the rotor shaft
cages are so long that they can be flexed outwards. A positive positive spring interaction is then
applied to the controlled end slug) k bearing cup. Squeaks, rattle and buzz are thus blocked,
especially when the loudspeaker is not rotating. The rods of the spider legs are slender and
acoustically transparent, so that striking sounds are avoided. A pulley 70 (FIG. 4) mounted on the
shaft between the rotor 10 and the panel 12 is provided to rotate the rotor. Goo l 770 [[, holes
are provided to make it as acoustically transparent as possible. The pulleys are connected to the
rotor by means of elastic pieces (not shown) of the type f 'described in the aforementioned U.S.
Pat. No. 3,515,760. The pulley 70 of the rotor is connected by a pulley belt 74 to the drive pulley
of a motor 72 (FIG. 2, FIG. 6). The motor 72H is attached to the panel 72 by the rotor 10 by a
bracket 76 consisting of 12 parts. The two-part bracket is acoustically isolated and one part is
attached to the motor and the other part is adjustably mounted on the panel independently of the
acoustic blocking means. One portion of the bracket 7B comprises a pair of parallel grooves 80,
82 extending generally radially of the axis of the rotor and working inward and outward to adjust
the tension in the pulleys. For this purpose, slots 84. 86 are provided on the sides thereof which
engage the panel 12, for cooperating with the clamping screws 88. The other part of the bracket
is a plate 90 which straddles the top of the groove 80 °. As shown in FIG. 7, the plate 90 has
four holes t arranged in a square shape in which a biconical Patkin 92 is locked. For this purpose,
a field attachment groove 94 is provided in each of Patzkin's. The bottom end of the patch is
placed on the top 7 lunge of the grooves 80, 82 and held in place by the washer 96 and fastener
98 at the top of the patch.
The fasteners are screws which are screwed into the washers 96, the patch 92 and the top 7
runes of the grooves 80.82. The motor 72 is mounted directly on the plate 90 so that the drive
pulley is properly engaged. The two-part bracket provides acoustic isolation between the motor
and the panel, providing a simple means of adjusting the belt tension. Under normal operation,
the noise circuit between the motor and the panel 12 contains a very small <3 slightly narrow
area at the flexible top of the biconical washer 3, the acoustic impedance is high. It goes without
saying that the double conical washer is an effective shock mount. Thus, when the Patzkin gets
dry due to impact loading, the compressive force increases in a mere linear fashion, rather as a
nearly square displacement. This is caused by the conical shape of Patzkin. Patzkin is effective
not only for blocking noise (both for extreme shock loads). As shown in FIGS. 5 and 4, the
speaker is surrounded by a molded and stretched polystyrene cover 50. This cover is very light
in weight, but if it is designed to prevent vibration and re-emission by receiving pressure, the
stress plate 100 is superimposed on the main area of the cover behind the speaker magnet. To be
achieved. The dilution of the tremolo effect by the aft diffusion is avoided by means that are
usually not endPage: 6 appropriate for this purpose. The soft, fibrous, paper-like gasket 52 not
only provides sealing, but can also prevent vibrations between incomplete VC embedded parts.
The rear cover may be omitted if an effective rear enclosure is provided by the separate &
console structure. In that case, the flexible multilayer paper insulator is anchored to the speaker
for optimum effect. In another embodiment of the invention shown in FIG. 8, the pulsating rotor
is not anchored to the stationary panel of the upright loudspeaker enclosure. It is daunted
between 110 and 112. One panel 110 is provided with a speaker 114 around the opening 116. A
platen similar to the bracket 54 described above is provided across the 118U opening. There is
only the opposite panel 111J, the hole 120 only for inserting the support patch 122 teeth. The
shaft 128 is provided with two hollow nested portions with a coil spring interposed
therebetween to produce end thrust in the bearings 124, 126. The required end thrust force is to
be produced in the same manner as provided by the spring action of the spider legs of the
previous embodiment.
Furthermore, the spring serves to compensate for any misalignment in the spacing between the
4. Brief Description of the Drawings] FIG. 1 is a perspective view of a pulsating unit embodying
the present invention, FIG. 2 is a plan view of the pulsing unit viewed from the rotor side of the
mounting panel, and FIG. Fig. 4 is a plan view seen from the speaker side (a broken figure, Fig. 4
is an illustrative view showing the shaft, the rotor, and the speaker cover in the axial direction,
Fig. 5 shows a hub plate with a hub plate) 6 is a perspective view showing an enlarged view of a
motor and a mounting plate, FIG. 7 is a sectional view taken along line 7-7 of FIG. 6, FIG. 8 is a
partial cross-sectional view showing another example of an axis used to mount a pulsating rotor
between two fixed panels. 10 ...... pulsation rotor, 12 ...... panel, 1B ...... shaft, 20.50 ...... Patsukin,
28 ...... bearing cup, 58 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Person Donald ・ Jie ・ Lesley the same pole φ Etch · Sharp
agent Patent attorney attorney Yuasa Ryozo λ (two others) EndPage: 7 procedure amendment
(scheme) 1. Display of the case Request for the 1974 noon 7th. Name of fl 341 341 / No. 2 111
辛 関係 、, relevant applicant's address 補正 address 出 願 thread 補正 topled ジ 丁 イ レ ス リ ー
Lesley (H-+ "1 l =) 4, the date of the agent 5 correction instruction・ Showa 9 λ year f month
near day (ship date) q no proxy letter and translated text Z correction contents 1 break s 42
month “l de ge 9” ry L? 1. h% 1 2 7 females; 1-7 "T. EndPage: 9 Warning: Page Discontinuity
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