CO885-(6-7) — Page 395

PAPERS.

No. 2.

Appendix I. to Mr. Siemons's Evidence.

ATLANTIC TELEGRAPH CABLES.

398

227

June 1894.

TABLE OF ELECTRICAL QUANTITIES REQUIRED FOR THE CALCULATION OF SPEED.

1.

2

3.

&

G.

7.

8.

9.

10.

11.

12

Calcu

Con-

Inted

Length

Con. ductor

Eleo-

-edg

Retar

tro-

Tesis-

due.

cinc

dation taking

Date when laid.

Des gration of

in

Cable.

Nauti cal Miles.

tance ITI

tivity.

Stallo

Apeed Spred actu ally

induc- co-effì•

1874

Manufactured by

expe

pure

ive

cient Cable

tained

Designation of

Cable,

ohms Copper Micro-

city in

Capa.

R

at 20'2

on

75° F.

100. farads.

city.

x P.

Words per Minute.

Trial.

R.

F.

x104

1965

Anglo-American.

1386

1,806 8,000

7,778 1,852

03:09

670'S

*1852 5.48%

13.06

Telegraph Construction

1865. Anglo-American.

and Maintenance Co.

1860.

94.63

654'7

*1852

5'093

15'02

I

1889.

+

1900

2,584 8,166 94:33 1,110

*2008

$'064

7'81

H

1873

1,876

94'21 5,936

080 2

1640

3'019

FI

1974

·

5,759 1,837

95.00

309'9

*1550 3'512

1875

Direct

United

54.52 7,642 2,423

States.

1879

Pouyer Quertier-

8,242

1600-80

Anglo-American.

1,852

1881 . Jay Gould -

2,518

1895

1934

Mackay-Bennett.

1454

2,563

2.453

2,546 7,638

987

830 7,896 98-75

95.90 7,781

590'0

97.20 B30 8,320

97-20 937 6,570

90-62 7,758

0:08

-1525 67740

1894

3N04

•

Anglo-American

2,161 6,323

3,106 1,850

97.60 879-2

98.50

6.630 *1558

877.6

778

1558 **071

-

Telegraph Construction and Maintenance Co. Siemens Brothers & Co.

6474 Telegraph Construction

and Maintenance Co.

1873.

1874.

1875. Direct

Btates.

United

1879. Pouyer-Quertier.

1866-80. Anglo-Ameri-

can.

1881. Jay Gould.

1889

Mac

1884. Southern Mac.

kas-Hennett. 1884. Northern

ay-Bennett. 1894. Third Mackay- Bennett.

1894 Anglo-American.

• Report of the Engineers, Meagra. Clark, Forde & Co., to the Manager of the Anglo-American Telegraph Company, dated June 25th, 1877. Report of the Engineers, Mesars. Clark, Forde & Co., to the Hanager of the Direct United States Cable Company, dated June 28th, 1577, Report of the Engineer-in-Chief, Mr. von Chauvin, to the Pourer-Quartier Cable Company, dated June 15th, 1880. Beport of Dr. Muirhead to Mr. von Chauvin, representative in London of the Western Union Telegraph Company, dated July 10th, 1888. "Electrician." October 12th, 1894.

·

18.11

-

20-20

9'38 7'558 *1820

*1028

10'74 6'600

15'31 4.6$2 -1587

9:05 1850 7'834

1539 B'050 8.84

*90's

too:6

-

Biemens Brothers

.

-

$97

10.42

#6.

·

10-71

·

14'18

49'

29.31 1:48

No. 3.

Appendix II. to Mr. Siemens's Evidence.

A.-SPECIFICATION FOR THE MANUFACTURE OF THE CABLES.

I.-Core.

The conductor shall consist of a strand of

copper wires, weighing

pounds per nautical Conductor.

mile of 2,029 yards, or within 5 per cent. thereof. The central wire of the strand to be drawn through compound before the outer wires are laid around it.

The conductor shall be covered with three or more coatinga of gutta-percha without the appli- Dielectric. cation of compound between the strand forming the conductor and the first layer of gutta-percha,

or between successive layers of gutta-percha. The dielectric to weigh unile, or within 5 cent. thereof.

per

-

pounds per nautical

The total weight of the core, when completed, to be

5

per

cent. thereof.

pounds per nautical mile, or within Weight of

core.

Ff 4

PUBLIC RECORD OFFICE

Reference :-

TITLLC.O. 885

6

ALLY WITHOUT PERMISSION OF THE BE REPRODUCED PHOTOGRAPHIC- COPYRIGHT PHOTOGRAPH-NOT TO

PUBLIC RECORD OFFICE, LONDON