US1699786A - Pressure-distributing device - Google Patents

Pressure-distributing device Download PDF

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Publication number
US1699786A
US1699786A US211065A US21106527A US1699786A US 1699786 A US1699786 A US 1699786A US 211065 A US211065 A US 211065A US 21106527 A US21106527 A US 21106527A US 1699786 A US1699786 A US 1699786A
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US
United States
Prior art keywords
diaphragm
pressure
corrugations
radial
triangular
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
US211065A
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English (en)
Inventor
Thaddeus R Goldsborough
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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
Priority to NL25055D priority Critical patent/NL25055C/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US211065A priority patent/US1699786A/en
Application granted granted Critical
Publication of US1699786A publication Critical patent/US1699786A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Definitions

  • 'rimnnnus a eonnsnonouox, or wmxmsnuae, rnnnsxnvanu, .assrexoa 'ro wnsrmenousn mo-rarc & MANUFACTURING comm, a ooaronarron or rmsnvam.
  • I M invention relates to pressure-distribut- Another object of m invention is to proing evices, and it has particular relation to vide an improved diap ragm of the pleated 'diaphragms for telephone receivers, loud type in which none of the elements thereof are speakers, phonographs, and the like. in objectionable vibratory contact with each With only few exceptions, devices inother when the diaphragm is actuated.
  • Another object of my invention is to prosort of vibratile diaphragms, either of small vide a diaphragm of the pleated type in dimensions associated with horns, or of relawhich driving forces are carried from the tively great areas which directly act upon the center to the periphery thereof along salient 10 air without the intervention of horns or angles formed by the intersections of the analogous devices. faces of the pleats.
  • Diaphragms of the latter type have been Another object of m invention is to pro made of many different materials, such as vide a corrugated diaphragm of novel shape paper, laminated wood, balsa-wood, spun which, when in vibration, is damped to some 5 aluminum, and the like, and have assumed extent by radial air-currents which are con- 66 many different forms varying from flat to strained to flow between the individual corconical, in the effort to secure the greatest rugations. rigidity commensurate with the mass thereof.
  • Another object of my invention is to pro- It has also been proposed to construct a vide a novel configuration for a diaphragm diaphragm ofa pleated sheet of paper, by or other object stamped, embossed, or mol arranging the pleats, or corrugations radifrom relatively thin material, that will have ally, and by so distorting them that the diamaximum stifl'ness relative to the mass hragm v'aries progressively, in flexibility, thereof.- mm a stiff central portion toward the pe- According to one modification of my in- 25 riphery thereof.
  • Pleated 'diaphragms are vention, I attain the aforementioned objects 76 exemplified by the patent to Lumiere, No.
  • FIG. 1 is a rear elevational view of a pleated diaphragm constructed according to a preferred embodiment of my invention
  • Fig. 2 is a cross-sectional view taken along a line corresponding to the line IIII of Fig. 1,
  • Fig. a line corresponding to Fig. 1,
  • Fig. 4 is a front elevational view
  • Fig. 5 is a view of a portion of paper or parchment that has been scored preparatory to being folded according to my invention.
  • a plu- 3 is a cross-sectional View taken along the line III--III of ra ity'of approximately trough-shaped cor-' from a central hub 2, P
  • rugations 1 radiating the corrugations being of alternately disposed ribs 3 and depressions 4, the ribs on one side of the diaphragm corresponding to the depressions on the other side thereof.
  • each rib behaves as though it were a reinforced girder, or beam, and does not buckle when forces are applied. to either end there- 'of.
  • the diaphragm as a whole, therefore, can not buckle under forces applied at the center if the peripheral ends of the separate ribs are prevented from spreading.
  • the spreading of the ribs is prevented by atfixing of a mounting rim 13, preferably made of than the material from which the'diaphragm itself is made, to the elements 6.
  • a diaphragm having the superficial configuration just described may be formed from a single rectangular sheet of paper, parchment, or the like, by folding or leating it in the manner indicated in Fig.
  • the length of the strip of material before scoring and folding should be approxireason of the merging mately twice the circumference of the fin- I ished diaphragm, while the width thereof should be substantially equal to the radius of the finished diaphragm.
  • the lines 15, 16' and 17 represent creases presenting salient angles to the observer when the sheet is viewed from above, and the lines 18, 19, 20 and 21 represent re-ent-rant an 'les when viewed from the same position.
  • mall triangular portions 22 of the material, bounded by the lines 23 and 24: and the edge of the strip, are then preferably removed, and the ends of the strip are then brought together and secured.
  • the diaphragm presents the appearance of a cylinder having fluted sides.
  • the perimeter of one end of the fluted cylinder is next ressed inwardly toward the axis thereof, and then downwardly along the axis, forcing the material to assume a relatively fiat circular shape wherein the fluted elements or ribs lie radially of the axis of the cylinder,
  • Small Washers 27 may be slipped over each.
  • the exact length of the scored lines 15, 16, 18 and 20 may be left largely to the judgment of the manufacturer, although I have found it preferable to make them equal to each other.
  • a diaphragm constructed according to my invention has many advantages over pleated diaphragms known to the prior art. Perhaps the most pronounced advantage lies in the fact that, even when made from extremely light and flexible material, it assumes a configuration which gives it sufiicient rigidity to prevent flexing when it is suspended from a flexible mounting annulus and subjected 'to driving forces applied at the hub. Each element of the radial corrugations is so braced that it is prevented from flexing, and
  • the primary ob'ect of my invention is to provide a metho whereby an extremely rigid diaphragm ma be made by scoring and folding a single s eet of flexible material in a novel manner
  • my invention in so far as the configuration of the finished diaphragm is concerned, is equally applicable to diaphragms that are constructed by embossing, stamping or molding.
  • the peculiar manner in which the individual corrugations are terminated at their peripheral ends adds materially to the stren th of the finished product, and may very a vantageously be utilized in the fcrmlng of bearing members for foundations, or for devices intended to distribute stresses and strains over material.
  • a pressure-distributing device having a pluralit of radial corrugations the projections 0 which, on a plane parallel to said device, are quadrilaterals.
  • a pressure-distributing device having a pluralit of radial corrugations the projections 0 which, on a plane parallel to said device, are quadrilaterals, the peripheral angles of said quadrilaterals being separated by substantially triangular figures.
  • a pressure-distnbutingdevice having a a mass of semi-solid the peripheral e pro ection of upon a radial plane being chisel-shaped, the points of said chisel being periphera 5.
  • a pressure-distributmgvdevice having a plurality of radial corrugations ada ted to transmit force from the center of sai device to the periphery thereof through beamaction, the radial edges of said corrugations on one side of said device merging into radially extending edges lying at an an le to said first-mentioned e ges, and the ra ial edges of ad'acent corrugations on the other side of said evice merging into radially extending and approximately triangular-shaped surfaces lying at an angle to said radial edges.
  • a pressure-distributing device having a plurality of radial corrugations, the peripheral terminations of said corrugations simulating triangular yramids.
  • a pressure-distributing device having a pluralit of radial corrugations, said corrugations being braced a ainst deformation.
  • a pressure-distri uting device havin a plurality of radial corrugations, the perip eral terminations of said corru ations simulating triangular pyramids an the peripherally-lying apices of said pyramids being separated by triangular integral elements.
  • a pressure-distributing device having a plurality of radial corrugations, the peripheral terminations of said corrugations simulating triangular pyramids an the peripherally-lyin apices of said pyramids being separated y triangular integral elements lying approximately tangential to a conical surface.
  • a pressure-distributing device having a plurality of radial corrugatlons, the pen heral terminations of said corru ations being spaced by integral triangular e ements lyiu in the surface of a conical figure'the apex 0 which is positioned in a line perpendicular to a plane defined by the peripheral sides of any two of said triangular elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
US211065A 1927-08-06 1927-08-06 Pressure-distributing device Expired - Lifetime US1699786A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL25055D NL25055C (en, 2012) 1927-08-06
US211065A US1699786A (en) 1927-08-06 1927-08-06 Pressure-distributing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US211065A US1699786A (en) 1927-08-06 1927-08-06 Pressure-distributing device

Publications (1)

Publication Number Publication Date
US1699786A true US1699786A (en) 1929-01-22

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Family Applications (1)

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US211065A Expired - Lifetime US1699786A (en) 1927-08-06 1927-08-06 Pressure-distributing device

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US (1) US1699786A (en, 2012)
NL (1) NL25055C (en, 2012)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655316A (en) * 1985-03-13 1987-04-07 Jbl Incorporated Acoustic diaphragm
US4761817A (en) * 1986-01-27 1988-08-02 Harman International Industries, Incorporated Diaphragm structure for a transducer
US4881617A (en) * 1988-12-30 1989-11-21 Alexander Faraone Radially arcuated speaker cone
US5390254A (en) * 1991-01-17 1995-02-14 Adelman; Roger A. Hearing apparatus
US6026929A (en) * 1997-11-10 2000-02-22 Single Source Technology And Development, Inc. High frequency radially arcuated center speaker cone with variable thickness
WO2005015950A1 (en) * 2003-08-08 2005-02-17 Koninklijke Philips Electronics N.V. Loudspeaker with undulated membrane

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655316A (en) * 1985-03-13 1987-04-07 Jbl Incorporated Acoustic diaphragm
US4761817A (en) * 1986-01-27 1988-08-02 Harman International Industries, Incorporated Diaphragm structure for a transducer
US4881617A (en) * 1988-12-30 1989-11-21 Alexander Faraone Radially arcuated speaker cone
US5390254A (en) * 1991-01-17 1995-02-14 Adelman; Roger A. Hearing apparatus
US6041129A (en) * 1991-01-17 2000-03-21 Adelman; Roger A. Hearing apparatus
US6026929A (en) * 1997-11-10 2000-02-22 Single Source Technology And Development, Inc. High frequency radially arcuated center speaker cone with variable thickness
WO2005015950A1 (en) * 2003-08-08 2005-02-17 Koninklijke Philips Electronics N.V. Loudspeaker with undulated membrane
CN1833464B (zh) * 2003-08-08 2011-04-20 Pss比利时股份有限公司 带有波状膜的扩音器

Also Published As

Publication number Publication date
NL25055C (en, 2012)

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