| 摘要 |
1,128,766. Tunnelling machines. JAMES S. ROBBINS & ASSOCIATES Inc. 22 Nov., 1965 [1 Dec., 1964], No. 20354/68. Divided out of 1.128.765. Heading E1F. Between the tail section 14 of a tunnelling machine and a tunnel lining L erected about the section as the machine is advanced underground is a seal PS that is secured to the section 14 by tongues on the seal being releasably secused in sockets formed on the section around an annular, peripheral zone thereof. The constructional components of the seal by which the seal is biassed against the lining form the subject matter of Specification 1.088,363. |
