US277087A - yarley - Google Patents

Description

.TU e e h s w B e h S 4 Y E L R A VV n... C. n d 0 M 0 m ELECTRICl DIVINING ROD.

Patented May 8,1883.

(No Model.) 4 Sheets-Sheet 2. C. P. VARLBY.

ELECTRIC DIVINING ROD.

No. 277,087. Patented May 8,1883.

(No Model.) i 4 Sheets-Sheet 3. C. F. VARLEY.

ELECTRIC DIVINING ROD.

Patented May 8, 1883.

(No Model.) 4 Sheets-Sheet 4.

- C. F. VARLEY.

ELECTRIC DIVINING ROD.

Patented May 8,1883.

Fig: 41.

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eRoMwELLF. VARLEY, on BEXLEY HEATH, COUNTY oF KENT, ENGLAND.

sBncIFIcATIoN `forming pm 'ef Letters Patent No. 277,087, dated Mey 8,1883.A

. f v .Application tiled August 31, 1882. (No model.) Patented in England December 7. 1881, No. 5,353.

To all whom it may concern;

Be it. known that I, GROMWE`LI. FLEET` Woon VARLEY, a subjectof the Queen of Great Britain,residing at Cromwell House, Bexley Heath, in the county of Kent, England, have invented certain new and useful improvementsin divinng-rods or apparatus by which the existence and position of 'metallic lodes v may be discovered, and which is also applicable to other useful purposes, (for which .I have received Letters 5,353, dated December 7,'188 1,)of which the followingis a specification.

The object of the invention is'to discover the existence and position of metallic lodes by of the ground.

`The apparatus in the form I find mostconvenient consists yof a rod or axis Iof from one meter to'two`or three in length. Therod is pivoted into a frame. end twoheliees of twenty to thirty, centimeters in diameter, as indicated in Figure 1 of the drawings annexed. The planesofthe rings means of 'observations made upon the surface are parallel with the axis, and the centers of the -two helices are placedabout one: meter or to a movable coil placed in a magnetic field.

apart, more or less. These helices, are c onnected together by two wires passing along at aconvenient part of the axis, and attached to two insulated semi-cylindrical pieces of metal mounted upon the axis, and against which two springs press. This arrangement forms a commutat'or,and the contacts change during the rotation as the planesof the rings or helices become v'ertical. The axis is. connected by means of a pulley and cord with a large-wheel carried on the frame which supports thepivots, or is otherwise geared so as to permit of itsl being rapidly rotated.' The 'two springs vof lthe commutator are rconnected to a delicate astatic. galvanometer at a convenient'distance,

At right angles. to the plane of the rodA projects a pointer.` This`- pointer is attached to the frame carrying the rod. The frame is mounted onpivots, so'as to turn in any direction, the stand carrying the frame having two axes, one horizontal, the othervertical, as in the altazimuth mounting of a telescope. 1f there be an electric earth-current 'passing in Patent in Great/Britain, No.

The rod carries on each' a' straight line of indenite length underneath the axle, it will produce a magnetic field ldiminishing in power as the distance from it increases.,I This magnetic field, when cut by the helices, tends to generate currents in them.

to thelode; but when the rod is suitably placed and the pointer is iu the direction of the lode the currents are divided half in one direction and half inthe other through the galvanometer,

which returns to zero. yThus if the galvan` ometer is deflected with the rod in any posi` tion it shows the presence of a lode. By in cliuing the rod until no current is produced the pointer is brought toa position in which -it indicates the direction of the lode, and by taking two observations, one on' each side of the lode at which the pointer shows an angle,

of forty-five degrees, half the horizontal distance between these two stations, is the distance of the lode beneath thel surface of the earth, supposing the surface -to be level or uniform. T he hollow helices Jateach end ot' the- `rotating bar may/be varied inform, and may be replaced by two bar electro-magnets.

An instrument with barl electro-magnets is represented bythe Figs. 2,3, and 4. 4 Fig. 2l

is a s'ide elevation, and Fig. 3a front eleva' Y' tion.

scale. l

a is the foot or support. b is a frame carried by it, and capable of being turned around the vertical axis b'. l g L v c is a board having horizontal axesor trunnions c c', by which it iscarried in the frame b, and about which the board can be inclined as may be desired. The board .o may thus be Figf4nis a portion of a plan to a larger said to have an altazimuth mounting. d is an `axis capable of` turning in bearings e c,-",xed

also pivots f -f at be put into rapid rotation' by aband which encrcles'the small on the board,'andit has the ends. vThe axis d can pulley d on the axis, andl alsothe .wheel.g, which, when required, vis turned by hand. .v

h' It are the electro-magnets at the two ends asv of the axis d. .They are similar to each other,

and each consists of a soft-iron core, which is f perpendicular tothe axis, and is surrounded with coils of silk-covered wires.` The coils are 2 l "senese all connected in-one circuit by wires which pass Within the axis, which is hollow. lThe ends of the Wires are brought out and attached to two semi-cylindrical pieces of metal, i i, which are carried upon the axis, but insulated t' from it and from each other.v

1c k are two metal springs fixed to the board c, and bearing against the metalpieces it,

These parts form acommutator. The vsprings ic lc are coupled with the galvanometer, whichl should be delicate and capable of appreciating' iary construction.

small currents..v The galvanometer is of ordi-V l rEhe connection is made by wirefs-passing along-the board from the springs lc k to one of the trunnions c', and to metal rings on this trunnion'.

l lare springs resting on the rings la 7c, and

wires pass direct from them to the galvanometen m is the pointer tixed tothe board. n isa graduateddisk, also xed to the board,

and on whichthe n the aid of -a plummet. v

- Having thus described the natureof my said invention and the manner of using the same, -25 .l would have it understood that I claim-'- The described divining-rod or instrument by which metallic lodes may be discovered" and their positions determined from 4the ei'ects of the electric current which naturally'traverses the lode, such instrument consisting of a pair of coils or helices ata distance apart, and either with or Without cores, such coils or helices be`` ing connected in opposition -to 'each other through a galvan'ometer or other instrument by which feeble electric currents .may be appreciated, and being arranged for simultaneous rotation, substantially as described..

London August 1, 1882.

cnonwntt rtnnrwoon mutui.

. Witnesses:

iclination may be read bly 1r' GHsIs BERKLY HARRIS,

J oHN DEAN, l 4 f Bothof 17 Gracechu/rch Street, London.

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