US138675A - Improvement in car-springs - Google Patents
Improvement in car-springs Download PDFInfo
- Publication number
- US138675A US138675A US138675DA US138675A US 138675 A US138675 A US 138675A US 138675D A US138675D A US 138675DA US 138675 A US138675 A US 138675A
- Authority
- US
- United States
- Prior art keywords
- springs
- car
- plates
- improvement
- spirals
- 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
Links
- 230000000717 retained Effects 0.000 description 2
- 230000003313 weakening Effects 0.000 description 2
Images
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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
Definitions
- My invention relates to an improvement in the car-spring for which Letters Patent No. 38,255 were granted to J. E. Wooten, April 21, 1863; and the object of my invention is to render the said spring more rigid and compact, and more available as a draw and bumper spring than that described in said patent.
- the aforesaid car-spring-of J. E. Wooten consists simply of two plates connected together by a number of precisely similar sprin gs, which form the whole elastic medium, and which are screwed into the plates.
- sprin gs which form the whole elastic medium
- the smaller spirals which are contained within those of larger diameter, (see sectional plan, Fig. 2,) are adapted to internal spiral grooves formed in orifices in the plates, and are so adjusted as to cause the plates to simply bear against the opposite ends of the larger spirals, which are retained in their proper lateral position by annular projections 00 surrounding the orifices for receiving the 'endsof the smaller spirals, and serving to strengthen the plates as well as to insure a better hold of the spirals on the said plates.
- the plate A having the annular projections as threaded internally, and surrounding the small spirals and retaining the large spirals in their proper lateral position.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
A. MIDDLETON", 1r.
Gar-Springs.
NO.138,675. V Patented May 6,1873.
WITNESSES. a, L2, aw.
AM PHom-mmsRAPmcco.ufloseamvzlspnocssg) UNITED STATES PATENT QFFIGE.
ALLEN MIDDLETON, JR, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN CAR-SPRINGS.
Specification forming part of Letters Patent No- 13S,675, dated May 6, 1873; application filtd November 27, 1872.
To all whom it may concern:
Be it known that I, ALLEN MIDDLETON, Jr., of Philadelphia, Pennsylvania, have invented an Improvement in Oar-Springs, of which the following is a specification:
My invention relates to an improvement in the car-spring for which Letters Patent No. 38,255 were granted to J. E. Wooten, April 21, 1863; and the object of my invention is to render the said spring more rigid and compact, and more available as a draw and bumper spring than that described in said patent.
I attain this object by confining spiral springs D between two plates A A, by means of lesser internal springs B, which are simply screwed into the said plates, as shown in the vertical section, Figure 1, and which form part of the elastic medium of the spring.
The aforesaid car-spring-of J. E. Wooten consists simply of two plates connected together bya number of precisely similar sprin gs, which form the whole elastic medium, and which are screwed into the plates. In this invention it was necessary to employ comparatively small spirals, and to arrange them at a sufficient distance apart to prevent the weakening of the plates by holes arranged too close to each other; hence the desired rigidity could not be obtained in a car-spring of the required moderate bulk, a defect which my invention has been designed to obviate.
The smaller spirals, which are contained within those of larger diameter, (see sectional plan, Fig. 2,) are adapted to internal spiral grooves formed in orifices in the plates, and are so adjusted as to cause the plates to simply bear against the opposite ends of the larger spirals, which are retained in their proper lateral position by annular projections 00 surrounding the orifices for receiving the 'endsof the smaller spirals, and serving to strengthen the plates as well as to insure a better hold of the spirals on the said plates.
An important feature of the spring is its freedom from all external projections, such as bolt-heads, the exterior of the plates being perfectly flat; hence the springs are especially available as draw and bumper springs.
I claim as my invention-- 7 1. A car-spring in which large spirals Dare confined between plates A A, connected together by small spirals B, all combined to opcrate substantially as and for the purpose set forth.
2. The plate A, having the annular projections as threaded internally, and surrounding the small spirals and retaining the large spirals in their proper lateral position.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
ALLEN MIDDLETON, JR.
Witnesses WM. A. STEEL, HUBERT HowsoN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US138675A true US138675A (en) | 1873-05-06 |
Family
ID=2208089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US138675D Expired - Lifetime US138675A (en) | Improvement in car-springs |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US138675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333403A (en) * | 1979-04-09 | 1982-06-08 | Transdyne, Inc. | Retainer railway car truck bolster spring |
-
0
- US US138675D patent/US138675A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333403A (en) * | 1979-04-09 | 1982-06-08 | Transdyne, Inc. | Retainer railway car truck bolster spring |
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