US2075815A - Method of forming a volute spring - Google Patents

Method of forming a volute spring Download PDF

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Publication number
US2075815A
US2075815A US746100A US74610034A US2075815A US 2075815 A US2075815 A US 2075815A US 746100 A US746100 A US 746100A US 74610034 A US74610034 A US 74610034A US 2075815 A US2075815 A US 2075815A
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United States
Prior art keywords
volute spring
forming
coil
liner
spring
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Expired - Lifetime
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US746100A
Inventor
Harry A Knox
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Priority to US746100A priority Critical patent/US2075815A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49609—Spring making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material
    • Y10T29/49812—Temporary protective coating, impregnation, or cast layer

Definitions

  • This invention relates to a method of forming a volute spring.
  • the purpose of the invention is to provide a method of forming a volute spring which will enable the spring to be made of alloy steel. Since alloy steel requires uniform quenching. during tempering the present method consists generally in insuring the provision of a thin space between the coils by initially placing therebetween a thin sheet oil a material which is subsequently melted out or consumed.
  • Fig. 1 is a plan view of a volute spring including a liner.
  • Fig. 2 is a longitudinal sectional view of a volute spring when rolled with the liner.
  • Fig. 3 is a similar view with the liner between the coils removed. I
  • volute spring is formed by rolling a steel plate 5 into a spiral coil in the usual manner.
  • a thin sheet 6 of aluminum, brass, or other low melting material is placed on the inside of the plate 5 so that it forms a liner between the convolutions oi the coil as shown in Fig. 1.
  • the spring is now heated to melt out or consume the liner which on being removed provides a thin space 1 between the convolutions of the coil.
  • the spring is now tempered by heating and quenching, the cooling liquid coming in con 5 tact with all surfaces of the spring.
  • volute spring which consists in placing a thin sheet of low melting material on the inside of a plate, rolling 10 the plate into a spiral coil, melting the thin sheet to cause its removal and leave a space between the convolutions of the coil, and then tempering the coil.
  • volute spring which 15 consists in placing a thin sheet of low melting material on the inside of aplate, rolling the plate into a spiral coil, melting the thin sheet to cause its removal and leave a space between the convolutions of the coil.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Description

April 6, 1937. H, A, KN'OX 2,075,815
METHOD OF FORMING A VOLUTE SPRING Filed Sept. 29, 1954 invents? H215 A-KMX AfL L m ney Patented Apr. 6, 1937 I UNITED STATES PATENT OFFICE (Granted under the act of March 3, 1883, as amended April 30, 1928; 3700. G. 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royalty thereon.
This invention relates to a method of forming a volute spring.
The purpose of the invention is to provide a method of forming a volute spring which will enable the spring to be made of alloy steel. Since alloy steel requires uniform quenching. during tempering the present method consists generally in insuring the provision of a thin space between the coils by initially placing therebetween a thin sheet oil a material which is subsequently melted out or consumed.
The improved method is illustrated in the accompanying drawing, in which,
Fig. 1 is a plan view of a volute spring including a liner.
Fig. 2 is a longitudinal sectional view of a volute spring when rolled with the liner.
Fig. 3 is a similar view with the liner between the coils removed. I
Referring to the drawing by characters of reference, the volute spring is formed by rolling a steel plate 5 into a spiral coil in the usual manner. A thin sheet 6 of aluminum, brass, or other low melting material is placed on the inside of the plate 5 so that it forms a liner between the convolutions oi the coil as shown in Fig. 1.
The spring is now heated to melt out or consume the liner which on being removed provides a thin space 1 between the convolutions of the coil. The spring is now tempered by heating and quenching, the cooling liquid coming in con 5 tact with all surfaces of the spring.
I claim:
1. The method of forming a volute spring which consists in placing a thin sheet of low melting material on the inside of a plate, rolling 10 the plate into a spiral coil, melting the thin sheet to cause its removal and leave a space between the convolutions of the coil, and then tempering the coil.
2. The method of forming a volute spring which 15 consists in placing a thin sheet of low melting material on the inside of aplate, rolling the plate into a spiral coil, melting the thin sheet to cause its removal and leave a space between the convolutions of the coil. 2O
3. The method of forming a volute spring which consists in rolling a plate with a liner into a spiral coil, removing the liner to leave a space between the convolutions of the coil, and then tempering the coil. 25
4. The method of forming a volute spring which consists inrolling a plate with a liner into a spiral coil, and removing the liner to leave a space between the convolutions of the coil.
HARRY A. KNOX.
US746100A 1934-09-29 1934-09-29 Method of forming a volute spring Expired - Lifetime US2075815A (en)

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US746100A US2075815A (en) 1934-09-29 1934-09-29 Method of forming a volute spring

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649298A (en) * 1950-05-12 1953-08-18 Holland Co Volute spring
US2731713A (en) * 1951-11-23 1956-01-24 Gen Electric Method of making a focused multicell
US3063142A (en) * 1959-03-06 1962-11-13 Pieter J Kroon Method of making tubing structures
US3187416A (en) * 1961-02-14 1965-06-08 Tuetey Paul Method for manufacturing spiral springs, particularly for watchmaking
US3268998A (en) * 1963-09-16 1966-08-30 Yawata Iron & Steel Co Method for forming steel strip into loose coil
US5152047A (en) * 1989-04-14 1992-10-06 Sumitomo Metal Industries, Ltd. Method of producing laminated metal belt
US20060289968A1 (en) * 2005-06-28 2006-12-28 Micron Technology, Inc. Conductive interconnect structures and formation methods using supercritical fluids

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649298A (en) * 1950-05-12 1953-08-18 Holland Co Volute spring
US2731713A (en) * 1951-11-23 1956-01-24 Gen Electric Method of making a focused multicell
US3063142A (en) * 1959-03-06 1962-11-13 Pieter J Kroon Method of making tubing structures
US3187416A (en) * 1961-02-14 1965-06-08 Tuetey Paul Method for manufacturing spiral springs, particularly for watchmaking
US3268998A (en) * 1963-09-16 1966-08-30 Yawata Iron & Steel Co Method for forming steel strip into loose coil
US5152047A (en) * 1989-04-14 1992-10-06 Sumitomo Metal Industries, Ltd. Method of producing laminated metal belt
US20060289968A1 (en) * 2005-06-28 2006-12-28 Micron Technology, Inc. Conductive interconnect structures and formation methods using supercritical fluids

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