Reinforced concrete tie with embedded rail clamp means

Details Reinforced concrete tie with embedded rail clamp means Reinforced concrete tie with embedded rail clamp means

1976-11-16

1978-05-23

Hoffman, Drayton E.

Railways: surface track

Ties

Nonmetallic

238349, 238377, E01B 332, E01B 930

Patent

active

040906655

ABSTRACT:
An assembly for fastening of railroad track incorporating a steel reinforced concrete tie with vertical thread steel sleeves welded to a reinforcement truss embedded in the concrete tie to which sleeves, track bolt assemblies may be threadably joined. A track bolt assembly includes a pair of hollow male threaded plugs, each threaded to a female thread in the opposed ends of a sleeve to retain a nut that is biased by a compression spring in the sleeve, to which nut, a track screw mounted to a hold-down block is engaged. With the hold-down block fixed against a track rail flange, the screw may be tightened in the nut of the sleeve to a pre-set tensile load as determined by the compression spring.

REFERENCES:
patent: 962588 (1910-06-01), Randall et al.
patent: 1051806 (1913-01-01), Eberhart
patent: 1384070 (1921-07-01), Kapolkin
patent: 3558050 (1971-01-01), Sonneville

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