GB1175026A – Loud Speaker System for Producing Pulsato And Celeste Effects
– Google Patents
GB1175026A – Loud Speaker System for Producing Pulsato And Celeste Effects
– Google Patents
Loud Speaker System for Producing Pulsato And Celeste Effects
Info
Publication number
GB1175026A
GB1175026A
GB34566/68A
GB3456668A
GB1175026A
GB 1175026 A
GB1175026 A
GB 1175026A
GB 34566/68 A
GB34566/68 A
GB 34566/68A
GB 3456668 A
GB3456668 A
GB 3456668A
GB 1175026 A
GB1175026 A
GB 1175026A
Authority
GB
United Kingdom
Prior art keywords
loudspeaker
loudspeakers
enclosed
air
outward passage
Prior art date
1967-07-28
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB34566/68A
Inventor
Donald James Leslie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1967-07-28
Filing date
1968-07-19
Publication date
1969-12-23
1968-07-19
Application filed by Individual
filed
Critical
Individual
1969-12-23
Publication of GB1175026A
publication
Critical
patent/GB1175026A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G10—MUSICAL INSTRUMENTS; ACOUSTICS
G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
G10H1/00—Details of electrophonic musical instruments
G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
G10H1/043—Continuous modulation
G10H1/047—Continuous modulation by acousto-mechanical means, e.g. rotating speakers or sound deflectors
Abstract
1,175,026. Electronic musical instruments. D. J. LESLIE. 19 July, 1968 [28 July, 1967], No. 34566/68. Heading G5J. [Also in Division H4] In a loudspeaker system for an electronic organ, two of the loudspeakers 48 and 82 are caused to rotate to produce pulsator or celeste effects by means of a two-way ganged switch S 1 to S 4 which alters the speed of rotation of the loudspeaker 48 and simultaneously causes a filter to be switched in and out of circuit. The speakers are enclosed in a rectangular cabinet 10, the medium and high range elliptical loudspeakers 36, 38 and the bass loudspeaker 12 all being enclosed in separate compartments 30, 32 and 14 respectively to reduce intermodulation. Louvred openings 46 provide for the outward passage of air from speakers 36, 38. Loudspeakers 48 and 82 are enclosed in a lower compartment 28 of cabinet 10. Loudspeaker 48 comprises a twin horn which is rotated by means of a two-speed motor 60 through pulleys 58 and 62 and belt 64. Loudspeaker 82 is an elliptical type mounted in a cylindrical drum 72 equipped with a slot 80 for the outward passage of air from the loudspeaker. The drum is similarly rotated by a single speed motor 86, connections to the loudspeaker passing through slip rings 83. Louvred opening (26) in the wall of compartment 28 provides for the outward passage of air from loudspeakers 12, 48 and 82. Fig. 4 (not shown) shows the wiring diagram of the loudspeakers in which three input channels, non-tremolo, tremolo and pedal are provided. A random phase shifter is provided in the lead to loudspeaker 36 to introduce a randomly varying frequency shift of the order of one or two cycles per second.
GB34566/68A
1967-07-28
1968-07-19
Loud Speaker System for Producing Pulsato And Celeste Effects
Expired
GB1175026A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US65682767A
1967-07-28
1967-07-28
Publications (1)
Publication Number
Publication Date
GB1175026A
true
GB1175026A
(en)
1969-12-23
Family
ID=24634745
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB34566/68A
Expired
GB1175026A
(en)
1967-07-28
1968-07-19
Loud Speaker System for Producing Pulsato And Celeste Effects
Country Status (4)
Country
Link
US
(1)
US3499114A
(en)
DE
(1)
DE1772916C3
(en)
GB
(1)
GB1175026A
(en)
NL
(1)
NL6809936A
(en)
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5415622Y2
(en)
*
1972-09-13
1979-06-22
US4017685A
(en)
*
1975-07-28
1977-04-12
Leslie Donald J
Planetary acoustic phase shift mechanism
US5099948A
(en)
*
1990-04-23
1992-03-31
Jim Melhart
Compact woofer speaker system
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2382413A
(en)
*
1943-05-10
1945-08-14
Hammond Instr Co
Electrical musical apparatus
US2441425A
(en)
*
1946-09-13
1948-05-11
Oras R Lawrence
Sound reproducing system
US3080786A
(en)
*
1959-07-17
1963-03-12
Donald J Leslie
Speaker system for adding tremolo
1967
1967-07-28
US
US656827A
patent/US3499114A/en
not_active
Expired – Lifetime
1968
1968-07-12
NL
NL6809936A
patent/NL6809936A/xx
unknown
1968-07-19
GB
GB34566/68A
patent/GB1175026A/en
not_active
Expired
1968-07-22
DE
DE1772916A
patent/DE1772916C3/en
not_active
Expired
Also Published As
Publication number
Publication date
DE1772916C3
(en)
1973-12-20
DE1772916B2
(en)
1973-06-07
NL6809936A
(en)
1969-01-30
US3499114A
(en)
1970-03-03
DE1772916A1
(en)
1970-09-24
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Legal Events
Date
Code
Title
Description
1970-05-06
PS
Patent sealed [section 19, patents act 1949]
1975-10-08
PLE
Entries relating assignments, transmissions, licences in the register of patents
1978-02-15
PLNP
Patent lapsed through nonpayment of renewal fees
