Claims
- 1. Shuttering for errecting a concrete tunnel lining, comprising: vault segments and a base segment which are pivotally interconnected and define a closed outline; a drive mechanism for stripping said segments off the tunnel lining; said drive mechanism mounted at the upper ends of said vault segments for rotation by a drive and comprising two parallel rotatably disposed shafts having cylindrical eccentrics which shafts are located at the upper ends of said vault segments and are interconnected by means of a connecting link having cylindrical holes at the ends thereof, said cylindrical eccentrics being mounted for rotation in said cylindrical holes in said link such that rotation of said shafts causes the vault segments to close inwardly.
- 2. Shuttering as claimed in claim 1, wherein said drive includes two hydraulic jacks, each of which is pivotally connected to one of said segments at one end thereof, and each of which is connected to a lever rigidly connected to one of said shafts at the other end thereof.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2565689 |
Jan 1978 |
SUX |
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Parent Case Info
This is a continuation of application Ser. No. 963,843, filed Nov. 27, 1978.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1163356 |
Sep 1958 |
FRX |
871055 |
Jun 1961 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
963843 |
Nov 1978 |
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