US2876670A - Music comb with cast base - Google Patents

Music comb with cast base Download PDF

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Publication number
US2876670A
US2876670A US613463A US61346356A US2876670A US 2876670 A US2876670 A US 2876670A US 613463 A US613463 A US 613463A US 61346356 A US61346356 A US 61346356A US 2876670 A US2876670 A US 2876670A
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United States
Prior art keywords
comb
vibrator
base
teeth
music
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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
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US613463A
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English (en)
Inventor
Theodore R Duncan
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Individual
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Individual
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Priority to US613463A priority Critical patent/US2876670A/en
Priority to CH4158557A priority patent/CH366729A/de
Application granted granted Critical
Publication of US2876670A publication Critical patent/US2876670A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10F—AUTOMATIC MUSICAL INSTRUMENTS
    • G10F1/00—Automatic musical instruments
    • G10F1/06—Musical boxes with plucked teeth, blades, or the like

Definitions

  • An object of the invention is to provide an improved music device having a novel music comb formed of sheet metal and mounted in a novel manner in a die-cast mounting base.
  • a further object is to provide a music comb of the type heretofore described wherein the bridging webs between the vibrators or teeth of the comb serve as a precision means for limiting the flow of the die-cast metal as the mounting base is cast about the comb and also serve as an inner limit to the effective lengths of the vibrators.
  • Still another object is to achieve a construction of music comb and die-cast mounting base wherein the construction of the comb results in an improved mechanical bond between the base and comb.
  • the comb is more firmly anchored in the base than has hitherto been the case, and louder, sharper tones result.
  • a further object is to provide an improved construction for the free ends of the vibrators of music combs having inclined free end portions which facilitates the plucking or actuation of the vibrators and serves to elfect a more instantaneous release thereof from the plucker.
  • Fig. 1 is a plan view of a sheet metal music comb embodying the invention, but on a larger-than-normal-size scale;
  • Fig. 2 is a greatly enlarged fragmentary plan view of a portion of the comb of Fig. 1;
  • Fig. 2A is a view similar to Fig. 2, but showing an alternate construction
  • Fig. 3 is an enlarged fragmentary side elevational view of the free end portion of one vibrator tooth, as on line 33 of Fig. 1;
  • Fig. 3A is a fragmentary enlarged sectional view of the top end portion of a vibrator tooth
  • Fig. 4 is a plan view of a music device showing the comb mounted in a die-cast base
  • Fig. 5 is an inverted plan view of the device of Fig. 4, as the same would appear when mounted on a diaphragm;
  • Fig. 6 is an enlarged fragmentary plan view of a portion of the mounting base and music comb of Fig. 5;
  • Fig. 7 is a section on line 77 of Fig. 6, but on a larger scale
  • Fig. 8 is an enlarged fragmentary plan view of the mounting base and comb.
  • Fig. 9 is a sectional view'on line 99 of Fig. 8.
  • a music comb 11 which is formed from sheet metal, as by one or more stamping operations.
  • the metal is preferably #1095 bright annealed spring steel, but other grades of steel and even other metals may be used.
  • the comb includes a base or main portion. 12 from which extend a plurality of vibrator teeth or vibrators 14.
  • the teeth are separated, or defined by slots 15 therebetween. It is a particular feature of my invention that I interrupt the slots 15 by bridging webs 16 extending between the teeth and positioned adjacent the base 12, being spaced therefrom a short distance as compared to the distance from the outer ends of the vibrators to the base.
  • the slots 15 may be considered as divided into outer slots 15' and inner slots 15" by the webs. It will be noted that in Figs. 1 and 2 the slots 15 and 15" are rectangular, having square corners and that the webs 16 are straight-sided from end to end.
  • the comb is formed to provide a radius 18 at each corner of the inner slots, here designated 15A" and at each cornerat the outer end of the outer slots, here designated 15A.
  • the web, designated 16A is concave-sided and thus narrower through its medial region than at its ends.
  • FIGs. 47 I show the comb 11 mounted iua mounting base 20.
  • This base is die-cast about the comb base 12 and has apertured mounting ears 22 and 23 for the reception of rivets 24 or other securing members to fasten the mounting base tight against a diaphragm member 25 shown in Fig. 5 only.
  • FIG. 2A I show 33 of the music comb base. While it is not essential, I prefer to provide a recess 34 in the main edge of the comb to facilitate the flow of metal in the mold to opposite sides of the comb base during casting. It will also be noted that the cast metal of the mounting base fills the inner slots of the slots 15 between the vibrator teeth. Thus there results an excellent mechanical bond between the mounting base and the music comb base, the comb being firmly gripped by the mounting base.
  • each vibrator tooth in reality extends into the body of the mounting base and is separated from adjacent vibrators therein by the slots 15".
  • the slots 15" filled with the die-cast metal serve materially to prevent transfer of energy from one vibrator to another and thus substantially eliminate cross interference between adjacent vibrators.
  • the webs 16 serve as a means of precisely limiting the flow of the die-cast metal during casting of the mounting base about the comb.
  • the webs also serve as the inner terminus of the effective vibrating length of the vibrators.
  • the webs should be narrow so as not to transmit energy from one vibrator to another. I have found that the webs should be narrower than the vibrators they connect and preferably of the order of one-half or less than one-half the Width of the narrowest vibrator.
  • each vibrator 14 is bent to provide an inclined end portion 46) which is preferably disposed at an angle of about 70 to the plane of the remainder of the vibrator. At its extreme end edge, the vibrator is formed to provide a radius or curved surface section 41.
  • the vibrator in forming the vibrator as by a stamping operation, I prefer to cause a burr or lateral deformation of metal to occur at 42. After the stamping operation, the surface should be smoothed at 42. The presence of the burr or deformed metal at this region of the vibrator facilitates the escape of the vibrator from the plucker as the latter moves past the vibrator, resulting in a quick release of the vibrator without any possible damping action.
  • the pluckers are preferably of a stiffiy pliant material, several of the presently existing plastics being suitable.
  • a music comb comprising a body of sheet metal formed to provide a comb base and a plurality of vibrator teeth projecting therefrom, said teeth being laterally spaced by slots therebetween, and a web between each pair of adjacent teeth, said webs being positioned adjacent the comb base and serving to interrupt said slots and thereby form a series of relatively short inner slots and a series of relatively long outer slots.
  • a music comb as set forth in claim 1 in which said webs are narrower than their associated vibrator teeth.
  • a music comb device comprising a sheet metal music comb having a comb base and a plurality of vibrator teeth projecting therefrom, said teeth being laterally spaced by slots therebetween, and a web between each pair of adjacent teeth, said webs being positioned adjacent the comb base and serving to interrupt said slots thereby to form a series of relatively short inner slots and a series of relatively long outer slots, and a mount ing base of cast metal encasing said comb base and substantially filling said inner slots.
  • a music comb device as set forth in claim 4 in which said mounting base terminates on the vibrator tooth side in a plane which passes through the webs of the comb.
  • a music comb device as set forth in claim 4 in which the vibrator teeth extend obliquely with respect to the general longitudinal axis of the comb and in which said mounting base terminates on the vibrator tooth side in a plane which passes through the webs of the comb.
  • a music comb comprising a relatively thin, generally flat body formed to provide a comb base and a plurality of vibrator teeth projecting therefrom, said teeth being laterally spaced by slots therebetween, and a web between each pair of adjacent teeth, said webs being positioned adjacent the comb base and serving to interrupt said slots and thereby form a series of relatively short inner slots and a series of relatively long outer slots.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
US613463A 1956-10-02 1956-10-02 Music comb with cast base Expired - Lifetime US2876670A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US613463A US2876670A (en) 1956-10-02 1956-10-02 Music comb with cast base
CH4158557A CH366729A (de) 1956-10-02 1957-01-14 Musikwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US613463A US2876670A (en) 1956-10-02 1956-10-02 Music comb with cast base

Publications (1)

Publication Number Publication Date
US2876670A true US2876670A (en) 1959-03-10

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US613463A Expired - Lifetime US2876670A (en) 1956-10-02 1956-10-02 Music comb with cast base

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US (1) US2876670A (de)
CH (1) CH366729A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013460A (en) * 1957-12-27 1961-12-19 Techna Anstalt Fur Verwertung Tuned musical comb
DE1422311B1 (de) * 1959-07-18 1970-06-25 Techna Anstalt Fuer Verwertung Verfahren zum Stimmen des Stimmkamms eines Musikwerkes
US4071364A (en) * 1973-08-22 1978-01-31 William Frederick Clark Process of photoetching a metal comb
US5807410A (en) * 1993-11-30 1998-09-15 Comprimo B.V. Process for removing elemental sulfur from a gas stream
CN104698807A (zh) * 2013-12-09 2015-06-10 宝玑表有限公司 用于时计的优化报时机构轮盘-振动板
US20160306325A1 (en) * 2013-12-09 2016-10-20 Montres Breguet S.A. Striking mechanism for a watch or music box with a vibration plate having optimised actuation energy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH4551A (fr) * 1892-02-04 1892-06-15 Louis Gagnaux Boîte à musique à cylindres perforés, sans goupilles et interchangeables
CH193108A (fr) * 1937-02-15 1937-09-30 Thorens Hermann Sa Pièce à musique.
CH255730A (de) * 1946-10-23 1948-07-15 Wyss & Haefeli Apparatebau Ag Zungenkörper für Musikwerke.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH4551A (fr) * 1892-02-04 1892-06-15 Louis Gagnaux Boîte à musique à cylindres perforés, sans goupilles et interchangeables
CH193108A (fr) * 1937-02-15 1937-09-30 Thorens Hermann Sa Pièce à musique.
CH255730A (de) * 1946-10-23 1948-07-15 Wyss & Haefeli Apparatebau Ag Zungenkörper für Musikwerke.

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013460A (en) * 1957-12-27 1961-12-19 Techna Anstalt Fur Verwertung Tuned musical comb
DE1422311B1 (de) * 1959-07-18 1970-06-25 Techna Anstalt Fuer Verwertung Verfahren zum Stimmen des Stimmkamms eines Musikwerkes
US4071364A (en) * 1973-08-22 1978-01-31 William Frederick Clark Process of photoetching a metal comb
US5807410A (en) * 1993-11-30 1998-09-15 Comprimo B.V. Process for removing elemental sulfur from a gas stream
CN104698807A (zh) * 2013-12-09 2015-06-10 宝玑表有限公司 用于时计的优化报时机构轮盘-振动板
EP2881935A1 (de) * 2013-12-09 2015-06-10 Montres Breguet SA Optimierte Tastenscheibe eines Schlagwerks für Uhr
EP2881936A2 (de) 2013-12-09 2015-06-10 Montres Breguet SA Optimierte tastenscheibe eines schlagwerks für uhr
US9182744B2 (en) 2013-12-09 2015-11-10 Montres Breguet Sa Optimised striking mechanism disc-vibration plate for a timepiece
EP2881936A3 (de) * 2013-12-09 2016-05-25 Montres Breguet SA Optimierte tastenscheibe eines schlagwerks für uhr
US20160306325A1 (en) * 2013-12-09 2016-10-20 Montres Breguet S.A. Striking mechanism for a watch or music box with a vibration plate having optimised actuation energy
CN104698807B (zh) * 2013-12-09 2017-08-08 宝玑表有限公司 用于时计的优化报时机构轮盘‑振动板
US9733620B2 (en) * 2013-12-09 2017-08-15 Montres Breguet Sa Striking mechanism for a watch or music box with a vibration plate having optimised actuation energy

Also Published As

Publication number Publication date
CH366729A (de) 1963-01-15

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