Apparatus for forming a tunnel

Claim 1

AN APPARATUS FOR PROGRESSIVELY PLACING AND REMOVING CONCRETE FORMS IN A TUNEL OPENING COMPRISING A PLURALITY OF FLOOR SECTIONS, SAID SECTIONS BEING IDENTICAL AND EACH INCLUDING A PAIR OF INVERT ARCH FORM MEMBERS ARRANGED IN SIDE BY SIDE RELATION WITH RESPECT TO EACH OTHER AND CONNECTED TOGETHER ALONG THEIR ADJACENT SIDES FOR HINGED MOVEMENT TOWARD AND AWAY FROM EACH OTHER, A RAIL EXTENDING ALONG EACH SAID MEMBER FROM ONE END TO THE OTHER END AND DISPODED IN PARALLEL SPACED RELATION WITH RESPECT TO SAID ADJACENT SIDES, SAID SECTIONS BEING ADAPTED TO BE LAID IN THE FORM OF A TUNNEL WITH THE MEMBERS OF EACH SECTION IN THE AWAY POSITION AND WITH SAID SECTIONS IN END TO END ABUTTING RELATION SO THAT SAID RAILS FORM A CONTINUOUS TRACKWAY ALONG SAID TUNNEL FORM, A TUNNEL-SHAPED CARRIAGE HAVING A FORWARD END AND A REARWARD END, SAID CARRIAGE HAVING SPACED SIDE WALLS AND A ROOF EXTENDING OVER THE UPPER ENDS OF SAID SIDE WALLS, A WHEEL ON THE LOWER END OF EACH OF SAID SIDE WALLS ADJACENT EACH END OF THE LATTER, SAID WHEELS ROLLABLY SUPPORTING SAID CARRIAGE ON SAID TRACKWAY WHEN SAID SECTIONS ARE IN THE LAID POSITION, AN OVERHEAD TRACK POSITION BETWEEN SAID SIDE WALLS ADJACENT THE UPPER ENDS THEREOF OF EXTENDING LONGITUDINALLY OF SAID CARRIAGE, SAID TRACK BEING DEPENDINGLY CARRIED BY SAID ROOF, AND HAVING A PORTION ADJACENT ONE END EXTERIORLY OF SAID FORWARD END OF SAID CARRIAGE AND HAVING A PORTION ADJACENT THE OTHER END

Claim 2

AN APPARATUS FOR PROGRESSIVELY PLACING AND REMOVING CONCRETE FORMS IN A TUNEL OPENING COMPRISING A PLURALITY OF FLOOR SECTIONS, SAID SECTIONS BEING IDENTICAL AND EACH INCLUDING A PAIR OF INVERT ARCH FORM MEMBERS ARRANGED IN SIDE BY SIDE RELATION WITH RESPECT TO EACH OTHER AND CONNECTED TOGETHER ALONG THEIR ADJACENT SIDES FOR HINGED MOVEMENT TOWARD AND AWAY FROM EACH OTHER, A RAIL EXTENDING ALONG EACH SAID MEMBER FROM ONE END TO THE OTHER END AND DISPODED IN PARALLEL SPACED RELATION WITH RESPECT TO SAID ADJACENT SIDES, SAID SECTIONS BEING ADAPTED TO BE LAID IN THE FORM OF A TUNNEL WITH THE MEMBERS OF EACH SECTION IN THE AWAY POSITION AND WITH SAID SECTIONS IN END TO END ABUTTING RELATION SO THAT SAID RAILS FORM A CONTINUOUS TRACKWAY ALONG SAID TUNNEL FORM, A TUNNEL-SHAPED CARRIAGE HAVING A FORWARD END AND A REARWARD END, SAID CARRIAGE HAVING SPACED SIDE WALLS AND A ROOF EXTENDING OVER THE UPPER ENDS OF SAID SIDE WALLS, A WHEEL ON THE LOWER END OF EACH OF SAID SIDE WALLS ADJACENT EACH END OF THE LATTER, SAID WHEELS ROLLABLY SUPPORTING SAID CARRIAGE ON SAID TRACKWAY WHEN SAID SECTIONS ARE IN THE LAID POSITION, AN OVERHEAD TRACK POSITION BETWEEN SAID SIDE WALLS ADJACENT THE UPPER ENDS THEREOF OF EXTENDING LONGITUDINALLY OF SAID CARRIAGE, SAID TRACK BEING DEPENDINGLY CARRIED BY SAID ROOF, AND HAVING A PORTION ADJACENT ONE END EXTERIORLY OF SAID FORWARD END OF SAID CARRIAGE AND HAVING A PORTION ADJACENT THE OTHER END