16 device 10 and beam 40 to prevent intrusion of unwanted material into the heating chambers 8 the chamber can be capped off by a chamber sealing member such as a pipe plug 14 along with the reduction of brittle fracture another advantage of using heatable members 12 in the device 10 is the reduction of ice buildup along the beam 40 or device itself ice buildup along the beam 40 hampers smooth movement of objects placed on the beam the use of heatable members 12 in the device 10 conducts heat along the beam 40 thereby melting ice and advantageously providing a smoother surface on the beam 40 for objects to slide on compared to a beam that has ice buildup in another embodiment of the invention the cylinder and piston unit 2 is attached to a first side weldment 50 and a second side weldment 70 the two side weldments 50 70 are separately illustrated in fig4 and 5 respectively and assembled together in fig1 the first side weldment 50 has the jack 6 pairs of dogs 24 a 24 b and one side portion of the slide 16 the second side weldment 70 has an opposing portion of the slide 16 the first and second side weldments 50 70 are attached together via one or more.