No superintendent, conductor, or other officer or employee of a railroad company, shall refuse or neglect, upon receiving notice from the inspector appointed by the public utilities commission, of a defective coupler or brake, to have it repaired forthwith or, on receiving notice from such inspector condemning a car, tender, or engine, shall fail to put it out of service at the first freight division terminal. No superintendent, conductor, or other officer or employee shall violate any other law relating to automatic couplers and air brakes. Whoever violates this section shall be fined not less than twenty-five nor more than five hundred dollars. Such person is also personally liable for any injuries resulting to any employee from such violation.