US3869955A - Recorder - Google Patents

Recorder Download PDF

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Publication number
US3869955A
US3869955A US407916A US40791673A US3869955A US 3869955 A US3869955 A US 3869955A US 407916 A US407916 A US 407916A US 40791673 A US40791673 A US 40791673A US 3869955 A US3869955 A US 3869955A
Authority
US
United States
Prior art keywords
block
recorder
water
polyester resin
unsaturated polyester
Prior art date
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 - Lifetime
Application number
US407916A
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English (en)
Inventor
Mitsuo Yamaguchi
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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.)
Filing date
Publication date
Application filed by Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Application granted granted Critical
Publication of US3869955A publication Critical patent/US3869955A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D7/00—General design of wind musical instruments
    • G10D7/02—General design of wind musical instruments of the type wherein an air current is directed against a ramp edge
    • G10D7/03—General design of wind musical instruments of the type wherein an air current is directed against a ramp edge with a windway for leading the air to the labium, e.g. recorders

Definitions

  • ABSTRACT Foreign Application Priority Data includes a block for forming a wind chan- Oct. 30, 1972 Japan 47-124328 nel at a mouthpiece, said block being made of plastics having a plurality of open, intercommunicating cells [52] US. Cl. 84/380 so as to effectively absorb the moisture introduced in [51] Int. Cl. Gl0d 7/00 the wind channel. [58] Field of Search etc, 84/380 C, 384
  • a recorder consists generally of a head section including a mouthpiece, a middle section connected to the head section and having finger holes that can be opened or closed by the human fingers during musical performance, and a foot section connected to a middle section.
  • the head section has within the mouthpiece a block for forming an air channel, and near one end of the air channel there is provided a fipple for producing a musical tone.
  • a block for an air channel is made of wood of a relatively high water absorbing property such as red cedar in an attempt to prevent breath moisture from being accumulated as water deposits on the inner wall of the recorder during musical performance.
  • the wooden block of such type is expanded, during musical performance, due to breath moisture to cause air channel to be narrowed. For this reason, air is not smoothly flowed into the air channel, resulting in the degradation of musical tones.
  • the recorder having such wooden block is unsuitable for a long, continuous musical performance.
  • Another recorder has a block for an air channel which is made of solid plastics. With the recorder of this type the block is not expanded due to breath moisture from the player. However, during musical per- .formance, breath moisture is accumulated as water deposits on the inner wall of the air channel to produce a degraded musical tone. For this reason, the player is required to blow the recorder harder during a musical performance or it is necessary to remove such deposits more often by a suitable means.
  • the recorder according to this invention has a block for an air channel which is made of a porous polymeric material having a plurality of interconnected cells.
  • This recorder causes breath moisture from the player to be suitably absorbed in the cells of the block, thereby preventing the deposition of moisture on the inner wall of the air channel and the expansion of the block. Since the block has interconnected or intercommunicating cells and a relatively great volume, a water absorbing property is particularly good. This permits a long, continuous musical performance to be effected in a normal way without involving any degradation of musical tones.
  • FIG. I is a side view showing a recorder of this invention.
  • FIG. 2 is a fragmentary, cross-sectional view showing the head portion of the recorder
  • FIG. 3 is a graphical representation showing the water absorbing properties of an unsaturated polyester resin block and red cedar block.
  • FIG. 4 is a graphical representation showing the degree of decrease in water content of the unsaturated polyester resin block and the red cedar block.
  • a recorder in FIGS. 1 and 2 consists of a head section 12 having a mouthpiece 11, a middle section 14 having finger holes 13 and a foot section 15 connected to the middle section 14.
  • the head section 12 has a longitudinal through hole 16 communicating with a corresponding hole of the middle and foot sections.
  • the through hole 16 receives a block or core 17 to define an air channel or wind way 18 therebetween.
  • the block 17 is made of a porous polymeric material having a plurality of interconnected or intercommunicating cells that are open in the air channel, and is attached to that inner wall of the mouthpiece which is opposite to the air channel.
  • an opening 19 Near one end of the air channel of the head section 12 is provided an opening 19 defining a fipple 20.
  • the block 17 is formed by molding an unsaturated polyester resin composition.
  • the block is manufactured as follows.
  • an unsaturated polyester resin use was made of a material com suddenly available under the trade name of Resistone S-NS (KYOWA HAKKO KOGYO KABUSHIKI KAI- SI-IA).
  • 50 parts by weight of unsaturated polyester resin was agitatedly mixed with 50 parts by weight of water and 0.5 part by weight of a preselected curing agent and the resultant mixture was charged into a silicone rubber mold and allowed to stand at normal temperature for 1 hour.
  • a formed block was then withdrawn from the mold and dried at C for 8 hours.
  • FIG. 3 indicates the degree of increase in water content as observed when the block made of unsaturated polyester resin and a block made of red cedar and having a corresponding size and shape are immersed in a lukewarm waterof 25C.
  • the water content is plotted as an ordinate while the time is plotted as an abscissa.
  • the water content of the red cedar block is linearly increased and reaches 25 percent after 24 hours while the water content of the unsaturated polyester resin block is markedly increased particularly at a first stage and reaches 45 percent after 24 hours.
  • the red cedar block substantially linearly releases its water and maintains a water content of percent after 24 hours while the unsaturated polyester resin block releases its water rapidly at first stage and maintains a water content of 65 percent after 24 hours.
  • the block of this invention is very greater in its moisture or water absorbing property and water releasing property than the conventional red cedar block and these properties are markedly exhibited at a first few hours.
  • the block made of unsaturated polyester resin is suitable in a case where a musical performance is effected for a few hours, or a musical performance is resumed after a few hours.
  • the state of interconnected or intercommunicating cells and thus the water absorbing and water releasing properties of the block are determined by the amount of water to be added to the unsaturated polyester resin.
  • 50 parts by weight of water was added to 50 parts by weight of the resin. If water is in the range of 20 to parts by weight, substantially the same water absorbing and water releasing properties will be revealed.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stringed Musical Instruments (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
US407916A 1972-10-30 1973-10-19 Recorder Expired - Lifetime US3869955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972124328U JPS4980233U (US20080293856A1-20081127-C00127.png) 1972-10-30 1972-10-30

Publications (1)

Publication Number Publication Date
US3869955A true US3869955A (en) 1975-03-11

Family

ID=14882606

Family Applications (1)

Application Number Title Priority Date Filing Date
US407916A Expired - Lifetime US3869955A (en) 1972-10-30 1973-10-19 Recorder

Country Status (4)

Country Link
US (1) US3869955A (US20080293856A1-20081127-C00127.png)
JP (1) JPS4980233U (US20080293856A1-20081127-C00127.png)
DE (1) DE2354344B2 (US20080293856A1-20081127-C00127.png)
GB (1) GB1422818A (US20080293856A1-20081127-C00127.png)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988956A (en) * 1974-07-04 1976-11-02 Hermann Moeck Recorder
US4700606A (en) * 1986-12-30 1987-10-20 Nobuo Toyama Recorders
US5905219A (en) * 1996-01-17 1999-05-18 Westheimer; Jack L. Stringed musical instrument body and neck composition and method of making body and neck
WO2003058598A1 (en) * 2002-01-10 2003-07-17 Bu Innovations Limited Improvements in or relating to wind instruments

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2469054A (en) * 2009-03-31 2010-10-06 Thomas Thomson Alexander Spit trap for a wind instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178986A (en) * 1962-08-20 1965-04-20 Moeck Hermann Recorder
US3585896A (en) * 1968-05-08 1971-06-22 Johannes Muller Recorder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4026042Y1 (US20080293856A1-20081127-C00127.png) * 1964-01-23 1965-09-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178986A (en) * 1962-08-20 1965-04-20 Moeck Hermann Recorder
US3585896A (en) * 1968-05-08 1971-06-22 Johannes Muller Recorder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988956A (en) * 1974-07-04 1976-11-02 Hermann Moeck Recorder
US4700606A (en) * 1986-12-30 1987-10-20 Nobuo Toyama Recorders
US5905219A (en) * 1996-01-17 1999-05-18 Westheimer; Jack L. Stringed musical instrument body and neck composition and method of making body and neck
WO2003058598A1 (en) * 2002-01-10 2003-07-17 Bu Innovations Limited Improvements in or relating to wind instruments

Also Published As

Publication number Publication date
JPS4980233U (US20080293856A1-20081127-C00127.png) 1974-07-11
DE2354344B2 (de) 1977-04-21
DE2354344A1 (de) 1974-05-09
GB1422818A (en) 1976-01-28

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