US3724203A - Pyramidal metronome - Google Patents

Pyramidal metronome Download PDF

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Publication number
US3724203A
US3724203A US00164700A US3724203DA US3724203A US 3724203 A US3724203 A US 3724203A US 00164700 A US00164700 A US 00164700A US 3724203D A US3724203D A US 3724203DA US 3724203 A US3724203 A US 3724203A
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US
United States
Prior art keywords
cabinet
body portion
cap
opening
metronome
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
US00164700A
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English (en)
Inventor
R Wittner
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Individual
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Individual
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Filing date
Publication date
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Publication of US3724203A publication Critical patent/US3724203A/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/02—Metronomes
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/02—Metronomes
    • G04F5/022—Mechanic metronomes

Definitions

  • a generally pyramidal cabinet for a metronome is (g1. formed y a mol de d truncated pyramidal y portion having appropriately arrange d integrally formed [58] new of Search "58/130 130 130 ments coacting with a cap portion, a base portion and 84/484 a cover portion to hold the cabinet together without the use of additional fasteners.
  • the present invention relates to a pyramidal cabinet for a metronome, having a body portion shaped in a truncated pyramidal form, a cap portion, and a base portion, and an opening located in one of the surfaces of the body portion and susceptible of being closed by a cover portion.
  • one object of the invention is to provide a metronome cabinet having the classical pyramidal form, which can be manufactured in the form of a thinwalled body and which, however, retainsits shape even at abnormally high temperatures, and which is simple and cheap to manufacture.
  • This object can be accomplished, according to the invention, by forming the truncated pyramidal body portion in the shape of a unitary plastic portion with its walls diverging toward a base portion and which is locked, preferably by cooperating elements with said base portion "and the cap portion, the cover portion being releasably secured to the body and cap portions.
  • the base portion of the cabinet is provided with protrusions along its margin, which engage with corresponding notches located on the inner wall of the body por tion.
  • the separate manufacture of the cap portion has the advantage that if irregularities exist in the upper part of the body portion, caused by the injecting machine for the plastic material, they are covered by the cap portion, and that the need for trimming the upper edge-of the body portion can be avoided.
  • both the locking device for the pendulum of the clockwork which is to be inserted into the cabinet of the metronome, and a protrusion to secure the cover portion of the opening provided in one of the surfaces of the body portion are part of the cap portion which can also be manufactured as a simple plastic molding.
  • the separate manufacture of the cap portion has also proved to be convenient due to the fact that, if the body portion is coated, for example with plastic sheets, it is not necessary to carry out the coating operation at the upper end of the body portion in a particularly careful manner, since it is also covered by the cap portion. The circumstances are analogous at the lower edge of the body portion, where the coating can,
  • FIG. 1 is a perspective view of a pyramidal metronome cabinet, according to the invention.
  • FIG. 2 is a sectional fragmentary view along line 2 2 of the cabinet shown in FIG. 1;
  • FIG. 3 is a fragmentary sectional view along line 3- 3 of 'the cabinet shown in FIG. 1;
  • FIG. 4 is a sectional view along line 4-4 in FIG. 3;
  • FIG. 5. is a fragmentary section view along line 5-5 of the metronome cabinet shown in FIG. 1;
  • FIGS. 6 and 7 are views from the bottom of the open body portion of a metronome cabinet of the invention respectively before, and after, the clockwork has been inserted therein.
  • FIG. 8 is a view of the under side of the base portion.
  • FIG. 1 shows that the pyramidal cabinet for a metronome, according to the invention, comprises a body portion 1, a capportion 2 and a cover portion 3, while the bottom portionof the cabinet cannot be seen since it is located inside the body portion.
  • a graduated scale 4 is arranged underneath the cover portion 3, which consists of transparentmaterial, whose indicia correspond to the stroke numbers which are obtained by moving the weight 5 along the pendulum bar 6 of the clockwork arranged inside the cabinet to' the height of each respective indicia.
  • a key 7 is also provided for winding the spring of the clockwork.
  • the body portion of the cabinet shown in FIG. 1 is formed as a unitary plastic molding. Since the base portion located inside the cabinet and near the lower end thereof provide a stiffeningeffect for the body portion, the wall thickness of this body portion can be relatively thin, without any risk that the cabinet will warp under the effect of excessive heat. 1
  • the base portion 8 which is provided with three legs 9 located on its under surface, is inserted at the inside of case portion 1 and abuts a shoulder 10, while protrusions 11 provided along the periphery of the base portion 8 engage with corresponding notches 12 provided 0 on the inner surface of case portion 1.
  • the base portion 8 is further provided with an opening 13 into which a tool, for example a screw driver, can be inserted to press the bottom portion out of its engagement.
  • a tool for example a screw driver
  • FIG. 8 further shows that the bottom portion is provided with acoustic slots 14 which permit the unimpeded passage of sounds produced inside the cabinet. Further, an opening 15 is provided in-the middle of the bottom portion shown in FIG. 8, into whichthe shaft of key 7 can be inserted to be held therein, for carrying purposes, once it has been unscrewed from the drive shaft of the clockwork.
  • a divider panel 16 is provided on the inside of base portion 8 in order to prevent the lower weight 17 of the pendulum from striking against the wheel (not shown) of the clockwork, in case of any excessive shock to the metronome.
  • FIGS. 6 and 7 particularly, but also in FIGS. 2 and 5, it is shown how the clockwork of the metronome is secured'to the metronome cabinet of the invention.
  • the inner surface of the body portion 1 is provided with vertical projections 18 which serve to mount the clockwork when it is placed inside the cabinet.
  • These projections. are reinforced along their lengths by means of reinforcing ribs 19.
  • the clockwork is secured by means of threaded bolts 20, which are screwed into suitably threaded bores within the projections 18.
  • FIG shows a cross-sectional view of one of the projections 18. It is apparent that the mounting of the clockwork in the cabinet can be carried out, in a particularly simple manner, by inserting it from the bottom,since only the four bolts need to be screwed into the projections. It should also be noted that there is no connection between the pendulum shaft 22 of the clockwork and the cabinet as is usual in some known metronomes. In case of repair, in these known metronomes, the bearing for the front end of the pendulum shaft and the pendulum bar 6 supporting the two weights have to be separated from the shaft itself before the clockwork can be removed.
  • the attachment of the cover portion 3 is achieved, in a preferred embodiment of the invention, by means of a slotted projecting nose 23.
  • This nose 23 is received within a recess 24 provided at the top of the cover portion 3 which also has offset flanges 25 along the lower margin. These flanges abut the inner side of the body portion at the lower margin of the opening provided at the front side thereof.
  • the recess 24 located in the cover portion 3 comprises two concentric bores of different diameters, whereby the smaller bore is located nearer the inner surface of the cover portion and has a diameter slightly smaller than the diameter of a bead which is formed at the free end of the projecting nose 23.
  • the.s1ot.26 in the projecting nose is first compressed when the cover portion 3 is applied, so that the bead of the projecting nose 23 can pass through the smaller bore.
  • the slot 26 opens and the bead of the projecting nose 23- engages with the shoulder of the recess 24, so that the cover portion 3 is secured.
  • the cap portion 2 is provided with a downwardly projecting wall 27, as shown in FIGS. 3 and 4, which defines a groove 28 for holding the upper end of the pendulum bar 6 when stopped. It is apparent that the configuration of the cap portion results in a very simple cabinet which has the advantage, in addition to the above mentioned ones, that relatively simple tools can be used to manufacture the injection molds for the body portion of the cabinet.
  • a separating wall 29 carrying a scale is located inside the body portion 1, lying in a plane parallel to the front surface of the body portion and connected to the opposite sides of the body portion.
  • This separating wall 29 extends further downwards than the lower edge of the opening in the front surface of the cabinet, and is provided with recesses in its lower end to permit the passage of the front support 31 for the shaft 22. A bearf pushes against the abutment, when the clockwork is in-.
  • the embodiment of the pyramidal metronome cabinet of the invention has particular advantages if the body portion of the cabinet is to be covered with a coating, for example, a decorated plastic coating.
  • a coating for example, a decorated plastic coating.
  • a pyramidal cabinet for a metronome comprising an enclosure of plastic material including a unitary truncated pyramidal hollow body portion the side walls thereof terminating at their upper and lower margins in respective common horizontal planes defining top and bottom openings, a removable cap portion received in said top opening to overlie said upper margins, a
  • a cabinet as defined in claim I wherein said body portion is provided at the inside with recesses to receive respective protrusions provided along the margins of the cap and base portions, and is also provided with shoulder means to abut the cap and base portions in their assembled positions.
  • said clockwork means being of the type including a pendulum bar, a
  • lever shaft and lever shaft bearings said groove provided in the cap portion receiving the upper end of the pendulum bar in the inoperative position of the metronome, and an abutment provided at the inside of the body portion cooperating with one of said lever shaft bearings.
  • varnished coating includes a pattern having a wood grain appearance.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toys (AREA)
  • Casings For Electric Apparatus (AREA)
  • Connection Of Plates (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
US00164700A 1970-07-22 1971-07-21 Pyramidal metronome Expired - Lifetime US3724203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2036319A DE2036319C3 (de) 1970-07-22 1970-07-22 Pyramidenförmiges Metronomgehäuse

Publications (1)

Publication Number Publication Date
US3724203A true US3724203A (en) 1973-04-03

Family

ID=5777504

Family Applications (1)

Application Number Title Priority Date Filing Date
US00164700A Expired - Lifetime US3724203A (en) 1970-07-22 1971-07-21 Pyramidal metronome

Country Status (7)

Country Link
US (1) US3724203A (fr)
JP (1) JPS5330353B1 (fr)
CH (1) CH535992A (fr)
CS (1) CS166029B2 (fr)
DD (1) DD99679A5 (fr)
DE (1) DE2036319C3 (fr)
FR (1) FR2099510B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818693A (en) * 1973-10-25 1974-06-25 F Allard Electronic metronome
US5515764A (en) * 1994-12-30 1996-05-14 Rosen; Daniel Harmonic metronome
USD751424S1 (en) * 2013-08-09 2016-03-15 Wittner Gmbh & Co. Kg Metronome
USD798361S1 (en) * 2015-11-26 2017-09-26 Lg Electronics Inc. Surveillance camera
USD798931S1 (en) * 2015-11-26 2017-10-03 Lg Electronics Inc. Surveillance camera

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734032A (en) * 1902-07-30 1903-07-21 Ernest K Adams Electric metronome.
DE961323C (de) * 1955-07-01 1957-04-04 Rudolf Wittner Metronom
DE1159246B (de) * 1959-02-27 1963-12-12 Rudolf Wittner Metronom
US3486323A (en) * 1968-11-15 1969-12-30 Frederick Franz Damage-resistant mechanical metronome

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1230384A (fr) * 1958-07-31 1960-09-15 Boîtier de métronome
US3386327A (en) * 1965-11-22 1968-06-04 Franz Frederick Metronome

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734032A (en) * 1902-07-30 1903-07-21 Ernest K Adams Electric metronome.
DE961323C (de) * 1955-07-01 1957-04-04 Rudolf Wittner Metronom
DE1159246B (de) * 1959-02-27 1963-12-12 Rudolf Wittner Metronom
US3486323A (en) * 1968-11-15 1969-12-30 Frederick Franz Damage-resistant mechanical metronome

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818693A (en) * 1973-10-25 1974-06-25 F Allard Electronic metronome
US5515764A (en) * 1994-12-30 1996-05-14 Rosen; Daniel Harmonic metronome
USD751424S1 (en) * 2013-08-09 2016-03-15 Wittner Gmbh & Co. Kg Metronome
USD798361S1 (en) * 2015-11-26 2017-09-26 Lg Electronics Inc. Surveillance camera
USD798931S1 (en) * 2015-11-26 2017-10-03 Lg Electronics Inc. Surveillance camera

Also Published As

Publication number Publication date
DD99679A5 (fr) 1973-08-12
FR2099510B1 (fr) 1975-06-06
CH535992A (de) 1973-04-15
JPS5330353B1 (fr) 1978-08-26
DE2036319C3 (de) 1974-07-11
FR2099510A1 (fr) 1972-03-17
CS166029B2 (fr) 1976-01-29
DE2036319B2 (de) 1973-12-13
DE2036319A1 (de) 1972-01-27

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