Rail joint bars and rail joint assemblies

1. A rail joint bar for joining two abutting railroad rails, comprising:

a metal body having a first surface, a second surface, an upper end, a lower end and a defining peripheral edge, the first surface positioned opposite from the second surface, the upper end and lower end positioned between the first and second surfaces, wherein a recessed portion is defined at an intermediate section of the upper end, the recessed portion extending from the first surface to the second surface, the recessed portion positioned below a decarb zone on the first surface of the metal body, wherein a width, as defined between the upper end and the lower end, is less at the section of the body that contains the intermediate section of the upper end than at the remainder of the body, a plurality of holes defined in the body; and

an insulating layer comprising a mesh screen and an adhesive positioned on opposite sides of the mesh screen, the insulating layer sandwiched between the body and the two abutting railroad rails and securing the rail joint bar to the railroad rails,

wherein a portion of the adhesive is positioned on the upper end of the body in the recessed portion, the adhesive being deeper at the recessed portion than at the remainder of the body.

2. The rail joint bar as claimed in claim 1 , wherein a recess is defined on the lower end of the body.

3. The rail joint bar as claimed in claim 1 , wherein the recessed portion is arcuate shaped.

4. The rail joint bar as claimed in claim 1 , wherein a depth of the recessed portion is between about 0.060 to 0.080 inch.