US1813617A - Laminated spring - Google Patents

Laminated spring Download PDF

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Publication number
US1813617A
US1813617A US289529A US28952928A US1813617A US 1813617 A US1813617 A US 1813617A US 289529 A US289529 A US 289529A US 28952928 A US28952928 A US 28952928A US 1813617 A US1813617 A US 1813617A
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US
United States
Prior art keywords
ridges
spring
plate
spring plate
width
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
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US289529A
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English (en)
Inventor
Fries Joel Samuel
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.)
SVENSKA SPIRALFABRIKEN AB
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SVENSKA SPIRALFABRIKEN AB
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Filing date
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Publication of US1813617A publication Critical patent/US1813617A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/182—Leaf springs with inter-engaging portions between leaves or between leaves and mountings, e.g. ridges, notches, ripples

Definitions

  • the present invention relates to animprovement in laminated supporting springs of the type which consist of two or more spring leaves or plates placed on top of each other and having a substantially rectangular cross sectional shape.
  • said plates are often provided with longitudlnal lo projections or ridges.
  • each spring plate is provided with longitudinal projections or ridges on both sides, said ridges having such height and such size that the maximum stresses on both sides of the spring plate become equal or substantially equal and thus become decreased as far as possible.
  • This arrangement may suitably be carried out in such 11 manner that each spring plate is provided on one side with two longitudinal projections or ridges, one along each edge, and on the other side with two longitudinal projections or ridges at a distance from the edges such that when the spring plate is placed against a second spring plate said last mentioned projections or ridges come between the ridges at the edges of the second plate. By this engagement the ridges will thus prevent lateral displacement of the plates relatively to each other.
  • Fig. 1 shows a cross section of two spring plates having ridges as heretofore used
  • Figs. 2 to 5 show cross sections of various forms of springs having two spring plates according to the present improvement.
  • each spring plate 1 49 on one side, and in the middle thereof, with a longitudinal ridge 2 which engages a corresponding groove 3 in the ad aCent spring plate when the spring plates are placed against each other.
  • the moment of inertia with respect to the neutral line a-a suffers only a hardly appreciable change, whereas the moment of resistance 59 with which one has to calculate, is decreased to a considerable degree, so that, for instance, for a spring plate having the cross sectional dimensions 90 X 13 mm.
  • each spring plate 4 is provided on one side with two longitudinal pro- JQCtlOIlS or ridges 5, one at each edge, and on the other side with two longitudinal projections or ridges 6 which are located at such distance from the ed es of the spring plate that, when the spring plate is placed against another spring plate, said ridges 6 on the first plate come between the ridges 5 at the edges of the second spring plate.
  • the ridges 5 and 6 will thus prevent lateral displacement of the spring plates relatively to one another, in the same manner as the ridges 2 and grooves 3 in Fig. 1.
  • each ridge 5 or 6 has a width equal to onesixth of the width of the entire spring plate. Tests have proved that this construction gives the best elasticity possible.
  • each spring plate bearing. against each other and each having a substantially rectangular cross section, each spring plate. havinglongitudinal'ridges on both sides proj ecting outside the rectangular cross section of the'plate, said ridges on one side/of each 0, plate equal to the width of the ridges on the plate running along the edges of the plate, and sa d ridges on the other side of each plate running at a d stance from the edges oi the first named side of the plate, ridges hav; ing such height and such size that the. maximum stresses become substantially equal on both sides of the spring plate.
  • each ridge has a width substantially equal to one-siitth of the width of the spring plate.
  • a'laminated spring the combination of atleast two springplates bearing against each other and each having a substantially rectangular cross section, each spring plate havingon' each side two, longitudinal ridges projecting outside the rectangular cross section ofthe plate and; separated-bya groove, the distance'b'etwe'en'the inner edges of the two ridges on the one side of the spring plate being substantially, equal to the width across thefouter edges of the two. ridges on the other siceof the springplate so that when one spring plate is placed against a second spring plate the inner edges of. the ridges on one side. ofthe first plate bear againstthe outer edges of the ridges on the other side of the second plate, said ridges oneach spring plate have ing such height and such size that the maximum stresses on both sides of the spring plate become substantially equal.
  • a spring plate having a substantially rectangular cross section and having on each side two, longitudinal ridges. projecting outside the rectangular. crosssection of the plate and separated by a groove, the ridges on the one side of the spring plate being displaced relatively to the ridges on the other side or the spring plate in such nianner that a ridge on one side is not opposed by a ridge on the other side, said ridges having such height and such size that the maximum stresses on both sides of the spring plate become substantially equal.
  • a spring/plate having a substantially rectangular. cross section and having on each side two, longitudinalridges projecting out side the rectangular cross's'ection of the plate and separated by a groove, the distance between the inner edges of the two ridges. on the one side ofthespring 'alate being substantially equal to the Width across. the outer edges of the two ridges on the other side of the spring p late, said ridges having such height and such, size that the maximum stresses on both sides 9f the spring plate bem sub an a y equ JOEL SAMUEL

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
US289529A 1927-07-07 1928-06-30 Laminated spring Expired - Lifetime US1813617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE293458X 1927-07-07

Publications (1)

Publication Number Publication Date
US1813617A true US1813617A (en) 1931-07-07

Family

ID=20307295

Family Applications (1)

Application Number Title Priority Date Filing Date
US289529A Expired - Lifetime US1813617A (en) 1927-07-07 1928-06-30 Laminated spring

Country Status (6)

Country Link
US (1) US1813617A (en))
BE (1) BE352677A (en))
CH (1) CH134249A (en))
DE (1) DE469755C (en))
GB (1) GB293458A (en))
NL (1) NL22826C (en))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450869A (en) * 1944-10-14 1948-10-12 Jonas Woodhead & Sons Ltd Leaf spring
US4512559A (en) * 1980-05-01 1985-04-23 Kabushiki Kaisha Toyota Chuo Kenkyusho Leaf spring construction
JP2020056700A (ja) * 2018-10-03 2020-04-09 株式会社ミツトヨ 硬さ試験機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960684C (de) * 1954-04-10 1957-03-28 Walter Stuebner Federbuegel mit kreisfoermig eingerollten Buegelenden

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450869A (en) * 1944-10-14 1948-10-12 Jonas Woodhead & Sons Ltd Leaf spring
US4512559A (en) * 1980-05-01 1985-04-23 Kabushiki Kaisha Toyota Chuo Kenkyusho Leaf spring construction
JP2020056700A (ja) * 2018-10-03 2020-04-09 株式会社ミツトヨ 硬さ試験機

Also Published As

Publication number Publication date
GB293458A (en) 1929-02-28
NL22826C (en))
BE352677A (en))
CH134249A (de) 1929-07-15
DE469755C (de) 1928-12-21

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