Method of attaching a rail and a tie plate to a cross tie
OwnerDavid M. Arthurinventor
Life of this patent
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Abstract
A spike retainer which may be forcibly driven through an aperture in a tie plate into a wood cross tie includes an upper lip for engaging a flanged base of a rail supported by the tie plate. A movable wedge attached to the spike retainer is forced between the cross tie and the tie plate when a spike is forcibly inserted into the spike retainer, thereby clamping the tie plate and the flanged base of the rail between the upper lip and the movable wedge. The spike retainer is initially inserted into a pre-drilled hole in the cross tie by means of an insertion tool having a channel which permits the spike retainer to be forcibly inserted into the hole without engaging the movable wedge.
Claims4
A method of attaching a rail and a tie plate to a cross tie, the rail having a flanged base, the tie plate having an aperture therein, the cross tie having a hole therein, said method comprising the steps of:
- a. aligning the aperture in the tie plate with the hole in the cross tie and the flanged base of the rail;
- b. inserting a spike retainer having a flange through the aperture of the tie plate and into the hole in the cross tie by means of a removable insertion tool until the flange engages the flanged base of the rail;
- c. removing the insertion tool from the spike retainer;
- d. inserting a spike having an enlarged head into the spike retainer;
- e. engaging the tie plate with the spike retainer to prevent substantial upward movement of the spike retainer with respect to the tie plate by means of a wedge-like element extending from the spike retainer;
- f. engaging the spike with the cross tie by
- i. deformably engaging the spike with the spike retainer to resiliently resist removal of the spike from the spike retainer;
- and
- ii. deformably engaging the spike retainer with the cross tie to resiliently resist removal of the spike retainer from the cross tie;
- g. inserting the spike into the spike retainer until the enlarged head of the spike engages the flange of the spike retainer to force the flange of the spike retainer against the flanged base of the rail, and clamp the tie plate and the flanged base of the rail together between the flange and the wedge-like element.
Dependencies are inferred from the claim text.