Rotatable insulating bushing

Claim 1

IN COMBINATION, AN ENCLOSING CASING FOR ELECTRICAL APPARATUS MOUNTED ON WHEELS FOR TRANSPORTATION AND HAVING A PAIR OF HORIZONTALLY SPACED APART OPENINGS IN A PORTION THEREOF GENERALLY TRANSVERSE TO THE DIRECTION OF TRANSPORTATION, WHEREBY SAID OPENINGS ARE SPACED APART IN A DIRECTION ACROSS THE WIDTH OF A ROAD ALONG WHICH SAID CASING IS TRANSPORTED, ELONGATED STRAIGHT INSULATING BUSHINGS DISPOSED IN SAID OPENINGS, MEANS MOUNTED ON SAID CASING ADJACENT EACH SAID OPENING FOR ROTATABLY MOUNTING THE CORRESPONDING BUSHING IN SAID OPENING, EACH SAID MEANS INCLUDING A MEMBER CLOSING SAID OPENING AND HAVING AN APERTURE THEREIN REGISTERING WITH SAID OPENING AND SAID MEMBER BEING ROTATABLE ABOUT THE AXIS OF SAID OPENING AND MEANS ON SAID MEMBER AND ENGAGING SAID BUSHING INTERMEDIATE ITS ENDS FOR MOUNTING SAID BUSHING WITH ITS AXIS INCLINED TO SAID AXIS OF SAID OPENING AND ALSO INCLINED TO THE AXIS OF ROTATION OF SAID MEMBER, SAID BUSHING SO MOUNTED ON SAID MEMBER EXTENDING THROUGH SAID APERTURE AND INTO SAID OPENING AND HAVING A FIRST STRAIGHT PORTION EXTENDING OUTWARDLY FROM SAID CASING COAXIAL WITH A SECOND STRAIGHT PORTION EXTENDING INWARDLY OF SAID CASING AND INTO SAID OPENING, SAID MEMBER BEING SELECTIVELY ROTATABLE BETWEEN FIRST AND SECOND POSITIONS AND ROTATION OF SAID SUPPORT MEANS BETWEEN SAID FIRST AND SECOND POSITIONS DISPLACING THE OUTWARD END OF SAID BUSHING IN A DIRECTION GENERALLY TRANSVERSE TO SAID DIRECTION OF TRANSPORTATION AND VARYING THE SPACING BETWEEN THE OUTWARD END OF SAID BUSHING AND THE OUTWARD END OF THE OTHER BUSHING IN A DIRECTION ACROSS THE WIDTH OF SAID ROAD ALONG WHICH SAID CASING IS TRANSPORTED.