US1432648A - Spring shackle and method of forming the same - Google Patents

Spring shackle and method of forming the same Download PDF

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Publication number
US1432648A
US1432648A US377941A US37794120A US1432648A US 1432648 A US1432648 A US 1432648A US 377941 A US377941 A US 377941A US 37794120 A US37794120 A US 37794120A US 1432648 A US1432648 A US 1432648A
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blank
same
spring
forming
spring shackle
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US377941A
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Arvin C Webster
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    • 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
    • F16F1/26—Attachments or mountings

Definitions

  • ARVIN C WEBSTER, 015 DETROIT, MICHIGAN.
  • a Figure 1 is an elevation of the blank from which the shackle is formed;
  • Figure 2 is a similar View showing aportion of the blank after the threading operation
  • Figure 3 is a View showing the blank after the first bending operation
  • Figure 4 is a similar View showing the refashioned blank
  • Figure 5 is a view similar to Figure 4,
  • the parallel pivot pins are formed from an integral blank, 40 the opposite ends of which are threaded and the threading operation is preferably formed by rolling prior to the initial bending of the blank. In the process of manufacture the first bending of the blank is into a U- shaped form, but in a subsequent operation this form is re-fashioned to produce a substantially straight connecting link portion.
  • A is a blank formed of straight round bar stock having end portions B and B reduced in diameter and threaded. Thisthread is preferably accomplished by a rolling process and the blank is first reto form the shoulder D and shank portion D and this shank portion is then further erably the blank is first reduced in diameter threads are rolled. After the completion of the rolling of the threads, indicated at C, the external diameter thereof will correspond with the shank portion D, as indicated in Figure 2. The blank is then bent into a Ushaped form, as indicated in Figure 3.
  • a spring shackle comprising a cold swedged member having parallel pin portions and a connecting link portion.
  • A. spring shackle comprising a cold swedged member having parallel pin portions, a connecting link portion and rolled threads on the pin portions.
  • a spring shackle formed from a single piece of bendable material comprising a substantially straight linkportion having a longitudinal projection upon one side thereof and intermediate its ends, and a pair of enlarged parallel cylindrical pin portions extending from the opposite side of the link portion adjacent to the opposite ends thereof, said pin portions having reduced shank portions intermediate their ends and terminating in reduced rolled threaded portions.

Description

A. C. WEBSTER. SPRING SHACKLE AND METHOD OF FORMING THE SAME. APPLICATION FILED APR. 30. I920.
1,432,648,, Patented Oct. 17,1922.
92, mm A41 I wmm,
Patented Oct; 17, 1922.
ARVIN C. WEBSTER, 015 DETROIT, MICHIGAN.
SPRING SHACKLE AND METHOD OF FORMING THE SAME.
Application filed April 30, 1920. Serial No. 377,941.
1 all whom it may concern:
Be it known that I, ARVIN C. Wises ER, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented cer tain new and useful Improvements in Spring Shackles and Methods of Forming the Same, of which the following is a specification, reference being had therein to the accolapanying drawings.
The invention relates to the manufacture of spring shackles, spring clips, etc, and it is the object of the invention to increase the strength and to cheapen themannfad turing cost, as hereinafter set forth In the drawings: a Figure 1 is an elevation of the blank from which the shackle is formed;
Figure 2 is a similar View showing aportion of the blank after the threading operation;
Figure 3 is a View showing the blank after the first bending operation;
Figure 4 is a similar View showing the refashioned blank;
Figure 5 is a view similar to Figure 4,
i showing a modified construction designed for use as a spring clip.
In the construction of spring shackles, it is usual to provide two parallely arranged pivot bolts connected to each other by bifurcated links and respectively engaged with the spring and the supporting or supported member. To permit of assein blii'ig and dismounting at least one of the 7 links must be removable and securing means must be provided for this removable link. l Vith the present invention the parallel pivot pins are formed from an integral blank, 40 the opposite ends of which are threaded and the threading operation is preferably formed by rolling prior to the initial bending of the blank. In the process of manufacture the first bending of the blank is into a U- shaped form, but in a subsequent operation this form is re-fashioned to produce a substantially straight connecting link portion. In detail, A is a blank formed of straight round bar stock having end portions B and B reduced in diameter and threaded. Thisthread is preferably accomplished by a rolling process and the blank is first reto form the shoulder D and shank portion D and this shank portion is then further erably the blank is first reduced in diameter threads are rolled. After the completion of the rolling of the threads, indicated at C, the external diameter thereof will correspond with the shank portion D, as indicated in Figure 2. The blank is then bent into a Ushaped form, as indicated in Figure 3. It, is then placed in dies and swedged or refashioned to form of the bend a substantially straight link portion E having a longitudinal projection upon one side there of and intermediate its ends to strengthen the same the pivot pins F and F projecting therefrom in parallel relation to each other. The portion E when re-fashioned is enlarged transversely to the axis of the pins F and F so as to form projecting shoulders.
in Figure 5 the construction is similar to that in Figure lwith the exception that the design is one adapted for use as a spring clip.
that I claim as my invention is:
l. A spring shackle comprising a cold swedged member having parallel pin portions and a connecting link portion.
2. A. spring shackle comprising a cold swedged member having parallel pin portions, a connecting link portion and rolled threads on the pin portions.
3. A spring shackle formed from a single piece of bendable material comprising a substantially straight linkportion having a longitudinal projection upon one side thereof and intermediate its ends, and a pair of enlarged parallel cylindrical pin portions extending from the opposite side of the link portion adjacent to the opposite ends thereof, said pin portions having reduced shank portions intermediate their ends and terminating in reduced rolled threaded portions.
In testimony whereof I {till my signature,
ARVIN' C. WEBSTER.
reduced to form the portion C on which the 0
US377941A 1920-04-30 1920-04-30 Spring shackle and method of forming the same Expired - Lifetime US1432648A (en)

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US377941A US1432648A (en) 1920-04-30 1920-04-30 Spring shackle and method of forming the same

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US377941A US1432648A (en) 1920-04-30 1920-04-30 Spring shackle and method of forming the same

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