US376893A - Ernest chaeles lindemam - Google Patents
Ernest chaeles lindemam Download PDFInfo
- Publication number
- US376893A US376893A US376893DA US376893A US 376893 A US376893 A US 376893A US 376893D A US376893D A US 376893DA US 376893 A US376893 A US 376893A
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- US
- United States
- Prior art keywords
- ernest
- lindemam
- chaeles
- wires
- lindemann
- 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
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- 239000004568 cement Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Definitions
- FIG. III is a side section of a part of the conduit, in which is situated a chamber provided with devices hereinafter described, to which certain of the wires may be secured and insu-- luted.
- Fig. IV is an end view ofthe said chamber.
- Fig. V is a"longitudinal side section of a part ofa conduit containing branches for wires, and
- Fig. VI is a sectional plan of Similar letters of reference indicate similar parts in all the figures.
- a A are conduitblocks, formed of concrete of non-conducting character, having holes atherein for electric or other wires. Theseblocks are adapted to be connected to each other; and with this View Fig. V.
- one end ofeach block has a dovetailed projection, b, while the other end is recessed,
- the chamber B is provided with insulating-glassesf, which are placed over wooden 45 pins or stems g, screwed into-the threaded holes in the removable top 0, the bottom I), and the sides E of the chamber BI
- these chambers are quite limited in size, itis imholes. Consequently they cannot be perfectly secured except by having the holes threaded,
- Figs. V and VI show a 7 having branches, and it will be seen that these branches'terminate in a similar manner to the main blocks asregards' the, projections. and
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- Element Separation (AREA)
Description
: v-.(.Nv0 M 2 Sheets-Sheet 1.
VB. 0. LINDEMANN.
UNDERGROUND OONDUIT FOR ELECTRIC WIRES.
N0. 376,893. Patented Jan. 24,1888.
- FIE I- FIG I- A. Q \X I @@ZM i N. FETER& Phnlo-Lilhographur, Washinglnn, D C.
(N Model.) I asheet -sneem.
E. 0. LINDEMANN.
UNDERGROUND GONDUIT FOR ELECTRIC WIRES,
No. 376,893. 'PatentedIJa111-24;18 88; I
N. PETERS. Photo-Lilhngmpher. Wflshinglon, DEC.
I film/w UNITE STATES. PATENT OFFI E,-
ERNEST CHARLES LINDEMANN, OF BALTIMORE, MARYLAND.
,UNDERGROUNDICONDUIT FOR ELECTRIC WIRES.
SEECIPICATION forming part of Letters Patent N 0. 376,893, dated January/24,1888. I
Application filed November 2, 1887. Serial No. 254.045. (No model.)
To allzvhom it may concern.-
Be itknown that I, ERNEST CHARLES LINDE- MANN, of the city of Baltimore and State of Maryland, have invented certain Improvements in Underground Conduits for'Electric and other Wires, of which the following is a specification.
In'the description of the said invention which follows, reference is made-to theaccompanying drawings, forming apart hereof, and in which i i v Figure I is a longitudinal side section of the conduit, and Fig. If an end view of the same. Fig. III is a side section of a part of the conduit, in which is situated a chamber provided with devices hereinafter described, to which certain of the wires may be secured and insu-- luted. Fig. IV is an end view ofthe said chamber. Fig. V is a"longitudinal side section ofa part ofa conduit containing branches for wires, and Fig. VI is a sectional plan of Similar letters of reference indicate similar parts in all the figures. In the said drawings, A A are conduitblocks, formed of concrete of non-conducting character, having holes atherein for electric or other wires. Theseblocks are adapted to be connected to each other; and with this View Fig. V.
one end ofeach block has a dovetailed projection, b, while the other end is recessed,
which recess ctis parallel in width and height and provided with a groove, d, which extends entirely around it, as shown. a
In connecting two blocks of the conduit together some plastic material is employed,
which fills up the spaces between the dovetailed projection and the inner face of the re- I cess c. The grooved being filled with cement, it becomes impossible after'the cement hardens to separate the sections without fracturing them.
Referring to Figs. III and IV, it will be seen that the chamber B is provided with insulating-glassesf, which are placed over wooden 45 pins or stems g, screwed into-the threaded holes in the removable top 0, the bottom I), and the sides E of the chamber BI As these chambers are quite limited in size, itis imholes. Consequently they cannot be perfectly secured except by having the holes threaded,
. as described.
,. In many cases it is necessary to uniteablock containing a number of wires to one having a 55. less number, which is douethrough the medium of test-boxes. Itherefore make the sections with the reduced number of holes of av less depth than the others, and fill thespace bepossible to drive the pins or stems g-intotheir' 5o tween the reduced projection and theinner 6o face of the recess with a liner-block,h, having grooves therein, as shown in Fig. III. By
this means I am enabled to economize in ma:
terial. I
Figs. V and VI show a 7 having branches, and it will be seen that these branches'terminate in a similar manner to the main blocks asregards' the, projections. and
projection-of a reduced size, and a grooved crossing or a block 6 5 liner-block adaptedto reduce the size of. the 75 recess, substantially as and for'the purpose specified.
ERNEST CHARLES LINDEMANN. 1
Witnesses:
WM. T. HOWARD, .DANL'. FISHER.
Publications (1)
Publication Number | Publication Date |
---|---|
US376893A true US376893A (en) | 1888-01-24 |
Family
ID=2445896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US376893D Expired - Lifetime US376893A (en) | Ernest chaeles lindemam |
Country Status (1)
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US (1) | US376893A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6390135B1 (en) * | 1998-05-15 | 2002-05-21 | Mirai Industry Co., Ltd. | Conduit assembly and method of installation |
-
0
- US US376893D patent/US376893A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6390135B1 (en) * | 1998-05-15 | 2002-05-21 | Mirai Industry Co., Ltd. | Conduit assembly and method of installation |
US6668864B2 (en) | 1998-05-15 | 2003-12-30 | Mirai Industry Co., Ltd. | Conduit assembly and method of installation |
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