US1169862A - Spring-dampener. - Google Patents

Description

2 SHEETS-SHEET l.

Patented Feb. 1, 1916.

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A. H. PEYCKE.

SPRING DAMPENER. APPLICATION FILED IuLYao. |915..

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UNiTED STATES PATENT oEEIoE. g

ARMAND H. PEYCKE, OF CHICAGO, ILLINOIS, ASSIGNOR T0 AMERICAN STEEL FOUN- DRIES, 0F NEW YORK, N. Y., A CORPORATION 0F NEW JERSEY.

Specification of Letters Patent.

SPRING-DAMPENER.

Application led July 30, 1915. Serial N o. 42,692.

To all whom t may concern Be it known that I, ARMAND H. PEYCKE,

a citizen of the'United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Spring-Dampeners, of which the following is a specification.

My invention relates to shock absorbing devices and has particular reference to 'a novel spring dampener adapted for use in connection with the nest of springs commonly employed in car trucks. v

A series of extensive tests have developed the fact that the springs which serve to resiliently support the bodies of railway cars act in a peculiar manner. For instance, it was found that the inequalities of the track or roadbed caused a slight compression of the springs carriedA b v the car truck and that under certain conditions the deflections were cumulative; that is, the car bo'dy had a tendency to teeter, the up and down movement under the action of the springs increasing progressively until the point was reached at which the springs were completely compressed and the vibration of the car body stopped thereby. Very shortly thereafter the same action was found to be repeated. This action, of course, is deleterious, not only to the springs but to the road bed and the car. The ordinary vibrations of the car would not be serious but the shock of the full compression of the springs is transmitted throughout the structure of the.

car and to the rcadbed. This has been sought to be overcome by the use of greater capacity springs with the' result that the required resiliency under light shocks is not present. It has been found therefore that the vibration or teetering of the car may be y eliminated without material loss in the resiliency of the springs by the provision of a dampener or friction element in connection with each nest of springs.

My invention therefore has for its object the provision of novel means adapted for association with a nest of springs whereby the cumulative vibration of the car is eliminated.

A further object is to provide means which may be of a size sufficient to permit their location at the center of a nest of four springs such as are commonly employed in freight car trucks.

The invention will be more readily understood by reference to the accompanying drawings, wherein, 1

F lgure 1 is a sectional elevation through a nest of springs to which my novel dampener has been applied; Fig. 2 isa similar vlew taken at right angles to Fig. 1; Fig. 3 1 s a section on the line 3--3 of Fig. l; Fig. 4: 1s. a vertical section through a slightly modlied form; Fig. 5 is a section on the line 5-5 of Fig. 4; Fig. 6 is a vertical section through a further modification, and

Fig. 7 is a section on the line 7-7 of Fig. 6.

Referring more particularly to the drawings and to Figs. 1 to 3 inclusive in detail,

it Will be seen that I provide my spring dampener, at a point substantially in the middle of a nest of four springs 10. It is common practice to arrange the springs as shown between upper and lowerspring plates 11, 12, and to place the springs in the car truck in this manner. The arrangement serves to facilitate handling and shipping and maintains the springs in their proper location and alinementwhen in the car truck. The upper and lower plates are commonly connected by suitable means permitting compression of the springs.

In the construction shown in Figs. 1 to 3, y

I have employed the common form of'upper and lower plates or caps and at the axial center of the upper plate I attach a squared barrel 13, which projects downwardly to a point near the lower plate 12. The barrel is rigidly secured to the upper spring cap by means of an inturned [iange 14. Secured to the lower spring plate 12, is a button or flanged proiection 15, which may be rivited in place. Mounted within the barrel 13, are counterpart castings, each provided on its lower end with a flange 16, which underlies the iiange 17, on the button 15. Above the flange 16, of the castings, is a Hoor or ledge 18, which acts as a seat for a coiled spring 19, the upper end of which engages a cone 20, lying between the conical surfaces 21, formed on the counterpart castings. The spring 19, is inserted under compression and the tendency thereof is to force the cone 20, upward and to spread the counterpart castings. This spreading tendency is resisted by the barrel 13. and frictional resistance is interposed against the vertical reciprocation of the plates 11, 12, under the action of the large springs4 10.

As best shown in Figs. 1 and 2, I provide described.

for limited bodily vertical movement of the lower spring plate 12, with relation to the counterpart castings; that is, they large springs 10, are adapted for a limited reciprocation Without .the interposition of the frictional resistance provided. This result is secured by providing the space 22, above the button, and a similar space 23, between the ends of the counterpart castings and the lower plate 12. This provides for the free action of the springs under light shocks.

In the construction shown in Figs. 44and 5, the top and bottom caps 24, 25, respectively are each provided with a tubular extension 26 and 27, rectangular in cross scction, which is secured4 to the axis ofthe plate and is located at the center of a group of four springs. Projecting into each of the tubular extensions 26, 27, are castings 28, 29, which are duplicates and which tightly engage the inside Walls of the tubular portions 26, 27. The castings28, 29, at their ends. are of increased thicknesspproviding a conical recess 30, therebetween, Within which recess 30, are mounted conical blocks 31 32, in opposed relation and urged apart by a coil spring 33.` The block 31 is centered with relationto the cap plate 24, by a bolt 34, the head of which, is countersunk in the plate 24. It Will be noted that the spring tends to force ,the conical Wedges against theconical surfaces of the members 28, 29` and to force these members tightly against the Walls of the tubular extensions, thereby securing the frictional resistance necessary.

In the construction of Figs. 6 and 7, the plates 35. 36, are similar to those heretofore To the plate 35, is secured a rectangular tube 37 Within Which a similar rectangular tube 38. secured to the lower plate, is placed. The tube 38, is provided with a portion of increased cross sectional area, thereby forming conical recesses 39, 40. Mounted in the recess 39. is the head 41,' of the bolt 42. the lower end of which bolt engages a nut 43, a flange of which serves as a tubular portion 38, is split or divided on a vertical line, as indicated in Fig. 7, the conical blocks 41, 42, tend to force the two halves of the member 38 against the inside surfaces v of the rectangular tube 37, and to Vthereby produce the required frictional resistance for 56 relative movement of the plates 35, 36, with' the car springs associated therewith.

n I have illustrated a number of modificatlons 1n this and my copending application.

Serial No. 42,693. Such other modifications 60 as are Within the scope of my claims I consider within the spirit of my invention.

I claim: o

1. In a device of the class described, the

combination of a spring, a plate mounted atK each end of said-spring, each of said plates being provided with a tubular projection at the center of the plate, and friction inducing means acting upon said tubular projections,

said last named means including a spring y advanced Wedge, substantially as described.

2. In a device of the class, described, the

combination of a. plurality of springs, a

of said incompressible tube, substantially as described.

3. In a device of the vclass described, the combination of a nest of springs, a spring cap for each end of the spring, an inexpansible tubular projectionl -from the center of one of said caps, a split tube secured, but permitted limited relative longitudinal movement with relation to the other cap, a Wedge located interiorly of said split tube,

and a spring acting upon said wedge, substantially as described.

Signed at Chicago, Ill., this 27th day of July, 1915.

ARMAND H. PEYCKE.

Witnesses:

C. F. MURRAY, T. D. BUTLER.

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