US192512A - Improvement in shields for tunnels - Google Patents
Improvement in shields for tunnels Download PDFInfo
- Publication number
- US192512A US192512A US192512DA US192512A US 192512 A US192512 A US 192512A US 192512D A US192512D A US 192512DA US 192512 A US192512 A US 192512A
- Authority
- US
- United States
- Prior art keywords
- shields
- tunnels
- improvement
- tunnel
- shield
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0692—Cutter drive shields
Definitions
- my invention relates to an improvement in shields for preventing the caving in of earth in driving tunnels and subterranean galleries until the same is bricked or walled up; its object being to simplify the construction of the shield and to advance it as rapidly as the ,heading is driven and the tunnel is lined. To this end it consists in making the shield in longitudinal strips or staves, the one overlapping the next at the edge, each stave having an abutment near the front end on the inner side, against which a jack-screw may be placed to advance it into the heading.
- Figure l' is a perspective view of the shield in position at the end of a tunnel, with portion broken away to show the interior.
- Fig. 2 is a longitudinal vertical section.
- Fig. 3 is a detached perspective view of a shield-stave.
- A represents the head end of the lining of a tunnel
- B a horizontal center sill at the headingface, held in place by a pair of horizontal braces, a, and diagonal braces b. 1n the bottom of the tunnel and drift, tram-rails 0 may be laid, and in the space between the diagonal braces b a doorframe, d, is placed, under the sill B, to give access to the bottom heading.
- the shield is composed of a number of metal staves, G, laid longitudinally on the superior half of the lining. One edge of each stave is flanged radially outward, while the other is flanged outward and then bent inwardly upon itself, to overlap the flange of the adjacent stave, as shown.
- an abutment, e forged on each stave, against which to place a jackscrew, to advance it into the face, the extremity being chisel-pointed.
- the face is sheet-piled in front of the sill, as represented by the sheet-piles f.
- the staves are advanced one by one, by
- each stave is supported by a prop, g, whose foot rests on a block laid on a ledge in the face.
- the projecting ends of the shield -staves protect the tunnel-head until it can be-walled in, when an additional lengthening out of the tunnel-head may be made in like manner.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Description
T. JEYNES.
SHIELDS FOR TUNNELS.
No. 192,512. Patented June 26,1877.
N.PETERS. FHOTG-LITHOGHAPNEH WISH NGTON D C Unrrnn Sawrns PATENT Orrron.
THOMAS JEYNES, OF DETROIT, MICHIGAN.
IMPROVEMENT IN SHIELDS FOR TUNNELS.
Specification forming part of Letters Patent N 0. 192,512, dated June 26, 1877 application filed April 4, 1877.
To all whom it may cancer-n:
Be it known that I, THOMAS JEYNES, of Detroit, in the county of Wayne and State of Michigan, have invented an Improvement in Shields for Tunnels, of which the following is a specification The nature of my invention relates to an improvement in shields for preventing the caving in of earth in driving tunnels and subterranean galleries until the same is bricked or walled up; its object being to simplify the construction of the shield and to advance it as rapidly as the ,heading is driven and the tunnel is lined. To this end it consists in making the shield in longitudinal strips or staves, the one overlapping the next at the edge, each stave having an abutment near the front end on the inner side, against which a jack-screw may be placed to advance it into the heading.
Figure l'is a perspective view of the shield in position at the end of a tunnel, with portion broken away to show the interior. Fig. 2 is a longitudinal vertical section. Fig. 3 is a detached perspective view of a shield-stave.
In the drawing, A represents the head end of the lining of a tunnel, and B a horizontal center sill at the headingface, held in place by a pair of horizontal braces, a, and diagonal braces b. 1n the bottom of the tunnel and drift, tram-rails 0 may be laid, and in the space between the diagonal braces b a doorframe, d, is placed, under the sill B, to give access to the bottom heading.
The shield is composed of a number of metal staves, G, laid longitudinally on the superior half of the lining. One edge of each stave is flanged radially outward, while the other is flanged outward and then bent inwardly upon itself, to overlap the flange of the adjacent stave, as shown. Upon the inside, near the front end, there is an abutment, e, forged on each stave, against which to place a jackscrew, to advance it into the face, the extremity being chisel-pointed.
In bad ground the face is sheet-piled in front of the sill, as represented by the sheet-piles f. The staves are advanced one by one, by
means of the jack-screws, beginning with the topmost one and alternating at each side. As fast as advanced the desired distance, each stave is supported by a prop, g, whose foot rests on a block laid on a ledge in the face.
The projecting ends of the shield -staves protect the tunnel-head until it can be-walled in, when an additional lengthening out of the tunnel-head may be made in like manner.
' What I claim as my invention is 1. In a tunnel-shield, the combination of the metal staves O, overlapped in the manner described, and adapted to be advanced bodily independent of each other, constructed and arranged substantially as and for the purposes set forth.
2. The combination, in a tunnel-shield, of the horizontal braced center sill B, overlapped metal staves 0, adapted to be advanced separately, and props g, all constructed and arranged substantially as described and shown.
THOMAS JEYNES.
Publications (1)
Publication Number | Publication Date |
---|---|
US192512A true US192512A (en) | 1877-06-26 |
Family
ID=2261918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US192512D Expired - Lifetime US192512A (en) | Improvement in shields for tunnels |
Country Status (1)
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US (1) | US192512A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050000362A1 (en) * | 2003-03-19 | 2005-01-06 | Bause Daniel E. | Evaporative emissions filter |
-
0
- US US192512D patent/US192512A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050000362A1 (en) * | 2003-03-19 | 2005-01-06 | Bause Daniel E. | Evaporative emissions filter |
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