US1814214A - Laminated spring - Google Patents

Description

' July 14, 1931. s. GROSS 1 14,214

LAMINATED SPRING Filed Aug. 3, 1928 Patented July 14, 1931' burn-:1) STATES;

PAT NT OFFICE SIEGFRIED GROSS, OF ESSEN, GERMANY, ASSIGNOR TO FRIED. KRU'PP AKTIENGESELL- SCI-IAFT, OF ESSEN-ON-THE-RUHR, GERMANY LAMINATED SPRING- Application flled August 3, 1928, Serial No.

The invention relates to laminated springs, more particularly to springs intended for vehicles and consists primarily in making the individual spring elements of equal length, as Well-known, but in designing them at least v approximately as bodies of uniform strength with varying thickness, so that they do not touch each other upon the spring system being loaded.

In order that the invention maybe more I easily understood, an embodiment of the subject-matter of the same is illustrated by way of example in the drawings which accompany and form part of this specification. In the drawings.

Figure l is an elevation of the first embodlment,

Figure 2 is the corresponding top view,

Figure 3 is a section on line 33 of Figure 2 on an enlarged scale,

Figure 4 is a detail of Figure 3, seen from the left.

Referring now to Figures 14, all of the spring elements D, D are of equal length and uniform width, while their thickness decreases from the band C towards their free ends approximately according to a common parabola. The uppermost and lowermost elements D of the system have eyes on each end that embrace pins 0 of heads E, see Figure 3. The free ends of the remaining spring elements D engage with play recesses e provided in the heads E. Pins 6 Figure 3, of heads E serve to connect the latter'with the rigging.

Upon the described spring system being loaded, the heads E shift parallel to the band C. lVhen this takes place, sliding friction arises only between the-eyes d of the spring' elements D and pins 6, While the elements D roll on the rounded-off edges of the recesses 6 Consequently the system exerts a spring action even with slight shocks, this being impossible with the known laminated springs, due to the internal friction existing between the individual spring elements. Besides this, compared to an ordinary spring of the same length, same number of elements, same thickness of the latter in the midst, and, with the same load as one of the known spring sys- 297,210, and in Germany October 27, 1927.

terms, the described spring system possesses secure by Let-- ness from their centers, said spring plates on contacting at their centers, means rigidly uniting said plates, and head pieces rotatably engaging the ends of'at least two of said plates and having supports for the ends of the-other spring plates.

2. In a spring system individual spring plates of equal length and diverging thickness from their centers, said spring platescontacting at their centers, means rigidly uniting and distancing said plates, and head pieces rotatably engaging the ends of at least two of said plates and having rounded faces loosely supporting the ends of the other. sprin plates.

3. n a spring system a stack of individual spring plates of equal length and diverging thickness from their centers, said spring plates contacting at their centers, mounting means rigidly connecting and distancing said spring plates, and mounting supports rotatably engaging the ends of two of said plates and having recesses with rounded edges abutting with the ends of the other plates.

The foregoing specification signed at Cologne, Germany, this 20th day of July,

. 'SIEGFRIED GROSS.

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