US1934978A - Spring - Google Patents

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Publication number
US1934978A
US1934978A US407132A US40713229A US1934978A US 1934978 A US1934978 A US 1934978A US 407132 A US407132 A US 407132A US 40713229 A US40713229 A US 40713229A US 1934978 A US1934978 A US 1934978A
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US
United States
Prior art keywords
stresses
spring
tension
compression
subject
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
US407132A
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English (en)
Inventor
Held Theodor
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.)
FIRM "RINGFEDER" GmbH
FIRM RINGFEDER GmbH
Original Assignee
FIRM RINGFEDER GmbH
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
Application filed by FIRM RINGFEDER GmbH filed Critical FIRM RINGFEDER GmbH
Priority claimed from GB2107530A external-priority patent/GB356866A/en
Application granted granted Critical
Publication of US1934978A publication Critical patent/US1934978A/en
Anticipated expiration legal-status Critical
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
    • F16F1/185—Leaf springs characterised by shape or design of individual leaves

Definitions

  • the object of the invention is to increase the ers in the manner of leaf springs which are prostrength of such springs by dimensioning them vided in the part of the cross-section subjected 60 in accordance with the different behaviour of to compression with one or more recesses A which the material of the spring in regard to the macn the form of grooves extend over the entire quently repeated tension and compression length of the leaf spring.
  • These recesses A in stresses. It is a well known fact that the fracthe otherwise rectangular cross-section cause a tures of leaf springs due to fatigue invariably displacement of the neutral. fibre towards the 65 start in the fibres. subject to tension. This expart of the cross-section subject to tension.
  • a spring rod subcross-sections may be chosen in which a greater J'ect to bending and the cross-section of which tr n th of the spri s is at a d y d fi r ntly is divided in two symmetrical halves by the dimensioning 61 and neutral fibres the tension and compression
  • the nature of the inv is diagrammati- 85 stresses are equal. If, on the other hand, by a, cally illustrated in Figs. 4a and 4b.
  • the neutral fibre is n n prin cr s-s accordin to my i displaced from the middle towards the fibr vention such as for instance used for slotted subject to tension the maximum tension stresses in er rings of friction springs there is shown a are reduced for the same amount of bending ring piece in side-elevation which is subject to 90 while the maximum compression stresses inbending stresses.
  • S is. the center of crease.
  • the ratio to be selected between tension gr y, the neutral fibre, 61 the distance and compression stresses depends upon the oscilof the fibre subject to maximum tension and c2 lation strength for these kind of stresses and that Of the fi subject t0 maximum eemplesthus changes with the material employed.
  • the distribution of the 95 invention is, however, intended to cover all other stresses will be gathered from the line OO' spring sections subject to bending stresses in located at right angles to NN in Co ju which the tension stresses are chosen lower than w t e l e indicating the Value and the compression stresses with the object of in-. nature of the stresses in the fibres. Since the creasing the strength of the spring. stresses in all materials suitable for springs in- 100 In the drawing affixed to my specification my crease in proportion with the distance from the invention is illustrated by way of example. In neutral fibre, the maximum tension k'z must be the drawing smaller than the maximum pressure kd and-stand Fig. 1 is a cross-section through an embodiin the relation of e1 to ex.
  • Fig. 2 is an elevation of a supportingspring .1.
  • Fig. 3 is a cross-section through Fig. 2, and v and having a' cross-section formation in which Figs. 4a and 4bare diagrams illustrating the the proportion of the distances of the outer tennature of my invention. sion fibres and the outer compression fibres from 3.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
US407132A 1928-11-21 1929-11-14 Spring Expired - Lifetime US1934978A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DER76357D DE515817C (de) 1928-11-21 1928-11-21 Biegungsfeder
GB2107530A GB356866A (en) 1930-07-11 1930-07-11 Improvements in or relating to springs

Publications (1)

Publication Number Publication Date
US1934978A true US1934978A (en) 1933-11-14

Family

ID=25992337

Family Applications (1)

Application Number Title Priority Date Filing Date
US407132A Expired - Lifetime US1934978A (en) 1928-11-21 1929-11-14 Spring

Country Status (4)

Country Link
US (1) US1934978A (enrdf_load_html_response)
BE (1) BE371902A (enrdf_load_html_response)
DE (1) DE515817C (enrdf_load_html_response)
FR (1) FR698634A (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533511A (en) * 1945-11-29 1950-12-12 Standard Steel Spring Co Single-leaf vehicle spring
US3155853A (en) * 1960-12-30 1964-11-03 Link Belt Co Aluminum leaf spring spacer
CN102797778A (zh) * 2012-08-30 2012-11-28 贵州大学 提高钢板弹簧性能的方法及装置
US9726245B2 (en) 2012-07-30 2017-08-08 Hendrickson Commercial Vehicle Systems Europe Gmbh Profiled bar, and vehicle spring produced therefrom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB909615A (en) * 1958-09-25 1962-10-31 Nippon Hatsujo Kabushiki Kaish Improvements in or relating to laminated carriage springs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533511A (en) * 1945-11-29 1950-12-12 Standard Steel Spring Co Single-leaf vehicle spring
US3155853A (en) * 1960-12-30 1964-11-03 Link Belt Co Aluminum leaf spring spacer
US9726245B2 (en) 2012-07-30 2017-08-08 Hendrickson Commercial Vehicle Systems Europe Gmbh Profiled bar, and vehicle spring produced therefrom
US10890228B2 (en) 2012-07-30 2021-01-12 Hendrickson Commercial Vehicle Systems Europe Gmbh Profiled bar, and vehicle spring produced therefrom
CN102797778A (zh) * 2012-08-30 2012-11-28 贵州大学 提高钢板弹簧性能的方法及装置

Also Published As

Publication number Publication date
DE515817C (de) 1931-01-13
BE371902A (enrdf_load_html_response) 1930-08-30
FR698634A (fr) 1931-02-02

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