Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-10-14
Protection from Lightning.


spnArrs ELECTRICIAN AND MErxILuHaIsf LdaHr-
MNaRoD MANufAcroRr Covington Kentucky begs to offer
these superior Rods Of Carbonized Anneaed
Iron, with Zinc Protectors and elements
combined In their manufacturer thus rendering them equal
accurately brassscrew connecting joints an entire
style Of metallic patened attachments for brick
ns ss asp
mounted with solid platinum silver point, lpatentedO
twelve inches long, at the base with three angu
ordinary extent Of dschargng the opposite eemens OF the
most fearful Thunderstorm and embrace the entire perec
ton Of science up to the present time the whole consttu
ting the most magnificent and perfect silent conductor ever
presented to the public.
Safety has not been compromised by aordng these
ceen rods at such low rates the greatest attention has
been given their construction be readily attached
The astonishing power Of the negative magnets in discharg
ing the air opposite elements been clearly demon.
the Elecrometer when unmagnetized points
same conditions In fact hsysaher and silently discharge
electricity rom the atmosphere when you would scarcely
These being secured by double letters pa
tent hereby cautioned against laying yourselves
liable by purchasing Of those who not authorized
who substituting inferior limitations All agents duly
CHAhlAES w. HEfDON,
Warrington CITY.
do hereby certify that have app Lied various powerful
Rods and that the results Of these experiments convince
that they will resist the action Of atmospheric causes and
senta to protection against lightning The reagents used
In the above experiments solution OF chloride Of
dum common sat) acec acid suphurc acid and hydro
chlorc acid With the first, there action 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. etChsn.
UNIVERSITY OF Ga, October 8, 1850.
The Lightning Conductors Of Mr. sprat offered to me,
well calculated TO perform the Office for which they
intended. Yours, truly, Prof RoBT. PETER.
LEXINGTON, Kr., February 20, 1850.
CHICAGO September 8, 1851
This may certify that have examined somewhat ortiz
csy James Spratts Patent Lightning Rods and that
Of opinion that Il Is constructed scientific principles For
combining durability, cheapness and efficacy, deem IL
equal and think SUPERIOR TO any other rod offered
for my inspection Prof JAS. v. z. BLANEY.
AUGUSTA, (GA.) November IL, 1850.
This will certify that have examined the Lightning
Rods, Metallic Points, and Isolang Attachments,
featured by Mr. spra and regard them as in
conformity the general laws Of the electric fluid and the
metallic compound constituting the Points promising
from the result OF several tests to which they submit
ted to resist for years the action Of those atmospheric
most likely to corrode them. A. MEANS,
Prof Phys. &c.. Emory College, Ga, and Prof Chem ana
Pharm, Medical College, Ca uUaA
The Lightning Conductors put up by Mr. Henry Smith,
Of this city, the plan Of Mr. spratt appear to TO be
very well devised and In point Of mechanical Construction
the best have seen.
It TO hoped that the Of these Rods may become
general important auxiliary defence against danger
which must be regarded Of no ordinary magnitude to
which ALI buildings are liable. r. SILIMAN, Jr,
Prof Of Chem. in the University Of Louisville.
LOUISVILLE, January n, 1851.
All orders left at ANDREW DUFFYs Stove Mandatory
18th street. win be promptly attended TO; or at GEORGE
BELLS Alexandria, Va, corner Of King and st. Asaph ss
ap1En