Daily American telegraph., 1852-08-16
Protection from Lightning.

THE undersigned being tho duly appointed Agent Of
saRop MASuPAcoIr, Covington Kentucky, begs TO offer
these superior Rods, OF sriraWsd Carbonzc Anneaed
lrcn with Zinc Protectors, aud Eloctroroye elements
combined in their manufactured thus rendering them equal
to copper conductors They in tonct lcngt with
accurately ytted brassscrew connecting Joints entire
style Of metallic atcnted attachments, for brick
frame buildings also glass solaers, of novel aud inge
nions construction paentedD forming lock- the whole
mounted with solii platinum silver point (patentcd)
twelve inches long, surrounded at the base with three angu
lar negative magnets which the power 10 extra
ordinary extent OF dichargng the opposite elements Of the
most fearful aud embrace the entire perfeo
ton of science to the present tune; the whole constu
ting the most magnificent and perfect silent conductor ever
presented 10 the public
Safety has not been compromised by acrdipg these ex
been given to to be attached
Tho astonishing power OF the negative magnets In dscarg
ing the air its opposite elements has been clearly demon
srated by the Electronoef, when unnaguetizcd points
have ehown but slight results though placed under the
conditions In fact they gather silently discharge
electricity from the atmosphere when ypu would scarcely
suspect any being present.
These improvements being secured by double letters pa
teu you hereby cautioned against laying yourselves
LIABLE by purchasing Of those who not authorized
who substituting inferior mitaons All agents duly
appointed chow their certificates Have good rods
mons. cHABLEs ". nEYDoN,
Washington City.
do horeby certify that have app lied various powerful
chemical reagents sprstts Patent Points for Lightning
Rods and thai tbe results OF these experentr convince me
that they will resist the action atmospheric causes and
thereby preserve the extremity sbarp condition most
senal protection against lightning The reagents used
diun common salt acotc ac Suphuric ac and hydro
chloric acid. With e Grst, there action on the
metal; with the several acds theTe very s9ta fact
SUFFICIENT to show that atmospheric influences would have
JOHN LgcoNTE, Prot. Of Nat. Phil etCh.m.
UNIvERSTr OF Ca, October 8, 1850.
The Lightning Conductors Of Mr. spratt, offered 10 me-
we calculated TO perform the once for which they are
intended. Yours, truly, Prof. RoBT. PETER
LEXINGTON, Kr, February 20, 1850
CHICAGO September D, 1850.
This may certify that have examined somewhat crit
cay James sprafs Patent Lightning Rods, and that
of opinion that Is constructed scientific priucipe Eor
combining durability, chcdpness, and efficacy, deem
equal and think SUPERIOR 10 any other rod over offered
for my inspection Prof JAS. " 2. BLANEY.
AUGUSTA, (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods, Metallic Pouts ard Isolatng Attachments,
featured by Mr. Spra and regard them constructed IN
conformity to tho general laws Of tho electric uid and the
metallic compound constituting the Points, promising
result Of several tests 10 which they submit
tod " resist for the action OF those causes
most likely 20 corrodc them A. MEANS,
Prof Phys. Sc. Emory COLLEGE, Ca, aud Prof Chem. snd
Pharm, Medical College, Ga.
The Lightning Conductors put up by Mr. Hepry NJ Smith
Of this city, tho plan Of Mr. Spratt appear 10 me 10 b
worry well Devised and point Of mechanical construction
are the best have secn.
IL Is be hoped that tho OF these Rods become
general as an important auxiliary defence against danger
which must be regarded Of ordinary magnitude 70
which all buildings arc liable. n. SILIMAN, Jr,
Prof Of Chem. In the University Of Louisvile.
LocIsvILLE, January q 1881.
All orders len at ANDREW DUFFYs stove Monufaotory
7h street, will be promptly attended TO; or at GEORGE
BELLS Alexandria, Va, Of King and ST. Asaph ss
ap l4-f