Daily American telegraph., 1852-08-23
Protection from Lightning.

T,HE undersigned being the duly appointed Agent Of
SPRATTs ELECTRICIAN AND ELECTRO METAILURaIsT LIGHT
NNaRoD MANuFAcroRr Covington Kentucky begs to offer
these superior Rods of Carbonized Anneaed
Iron with Zinc Protectors anu slemsnss s
copper conductors They In teneet lengths with
accurately fitted brass connectng JOINTS an entire
new style metallic patented attachments for brick or
frame buildings also glass solaers of novel and inge
NOUS construction paented forming lock; the whole
mounted with solid platinum silver point, (patented0
twelve inches long, surrounded at the base with three angu
negative magnets which the power to an extra
ordinary extent q disehargng she oPpose sr
science up to the present time the whole constu
ting the magnificent and perfect Silent conductor ever
afety has not been compromised by aording these
eeent such low rates the greatest has
been given their to be readily attached
The astonishing power the negative magnets In discaTg
ing the air its opposite elements has been clearly demon
strated by the Eectromeer when unmagnetzed points
nave shown but slight results though placed under the
conditions In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
These improvements being secured by double letters pa.
teat you hereby cautioned against laying yourselves
liable by purchasing Of those who are not authorized or
who are substituting inferior limitations All agents duly
appointed show their certificates Have good rods or
CHAhLES w. hE1DoN,
Washington City.
do hereby certify that have app lied various powerful
chemical reagents 10 sprates Patent Points for lightning
Rods and that the results of these experiments convince me
that they will resist the action Of atmospheric causes ana
thereby the extremity Sharp condition most es
senta TO protection against lightning The reagents used
in the above experiments were solution of chloride Of
dun common salt acetic acid suphuric acid and hydro
chlorc ncd. With the first, there action on the
metal with the several acids there very sga fact
sufficient to show that atmospheric influences would have
no sensible effect.
JOHN LEcoNTE, Prof of Nat Phil ct Chem.
UNIVERSITY OF GA, October s, 1860
The Lightning Conductors Of Mr.. Sprat offered TO me-
well calculated to perform the Office for which they are
intended. Yours truly, Prof R0BT PETER
LEXINGTON, KY, February 90 1850.
CHICAGO, September g. 1850.
This may certify that have examined, somewhat crt
cay James Spratts Patent Lightning Rods and that am
Of opinion that II Is constructed scientific principles For
combining durability, chespness, and efficacy, deem
for my inspection. Prof JAS. V. q BLANEY.
AUGUSTA, (GA.) November IL, 1850.
This will certify that have examined the Lightning
Rods, Metallic Points and 1soating Attachments manu-
featured by Mr. Sprst and regard them as in
conformity the general laws OF the electric hud ana the
metallic compound constituting the Points, promising
from the result OF several tests 70 which they we're submit
ted to resist for the action Of those atmospheric causes
most likely to corrode them. A. MRANsJ
Prof Phys &c. Emory College, Ga, and Prof Chem and
Pharm. Medical College, Ga.
The Lightning Conductors put up by Mr. Henry NJ Smith,
of this city, the plan of Mr. sprat appear 70 me 70 be
very well devised and In point Of mechanical constrco
the best have seen.
II Ia TO be hoped that the Of these Rods may become
general as an important auxiliary defence against danger
which must be regarded Of ordinary magnitude TO
which all buildings are liable. X SlLlMAN, Jr,
Prof Of Chem. in the University Of Louisville,
LOUISVILLE, January ", 1851.
All orders LEFT at ANDREW DUFFYs glove Mandatory
7th street. will be promptly attended to- or at GEORGE
BELLS Alexandria, Va corner Of King and 81 Asaph s
an l4-H