Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-10-02
Protection from Lightning,

JNHE undersigned being the duly appointed Agent q
NaRoD MANDATORY Covington, Kentucky begs to offer
these superior Rods of Carbonized Anneaed
combined In their manufacture thus rendering them equal
to copper conductors They In eneet lengths with
a metallic for brick Of
frame buildings also, glass isoaters Of novel and inge
NOUS construction, Patented forming lock- the whole
mounted with solid platinum silver point, (patentedO
twelve inches long, at the base with three angu
lar negative magnets which the power to extra
most fearful thunderstorm and embrace the entire perfec
ton Of science up to the present time; the whole constu
ting the most magnificent and perfect silent conductor
presented to the public
Safety has not compromised by aordng these e1.
ceen rods at such low rates the greatest attention has
been given to their construction as to be readily attached
The astonishing power Of the negative magnets In dschag
ing the air q Its oppeste elements has been clearly
have shown but slight results though placed under the
conditions In fao they gather and silently discharge
electricity from the atmosphere when you would scarcely
These improvements being by double letters pa
LIABLE by purchasing Of those who not authorized
who are substituting infSrior limitations All agents duly
none. CHAkLEb W. HEYDON,
Washington City.
do hereby certify that have app lied various powerful
chemical reagents TO spats Patent Points for Lightning
Rods and that the results o. these me
thereby preserve the extremity SHARPE condition most
senal to protection against lightning The reagents used
dum common SALT acetc acid suphurio acid and hydro.
chloc acid. With the first, there action the
metal with the several acids there very spha fact
sufficient to show that atmospheric influences would have
no sensible effect.
JOHN LEooNTE, Prof Of Nat. Phil. etohsm
UNvERsITY OF Ga, October s, 1850.
The Lightning Conductors Of Mr. spratt offered TO me.
well calculated to perform the office for which they
intended. Yours truly, Prof R0BT. PETER.
LEXINGTON, XII, February 20, 1850
CHICAGO, September 8, 1s6ol
This may certify that have examined somewhat crit
cay, James Spratts Patent Lightning Rods and that
Of opinion that Il Ia constructed scientific principles For
combining durability, cheapness, and efficacy, deem 10
equal and think SUPERIOR to any other rod offered
for my inspection. Prof JAS. v. 2. BLANEY.
AUGUSTA, (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods Metallic Points, and Isolating Attachments, manu-
featured by Mr. 6pra and regard them constructed in
conformity to the general laws Of the electric fuid and the
metallic compound constituting the Points promising,
from the result OF several 70 which they submit
most likely TO corrode them. A. MEANS,
Prof Phys. &C., Emory College, Ga and Prof Chem. and
Pharm. Medical College, Ga.
Tho Lightning Conductors put up by Mr. Henry NJ Smith,
Of this dty the plan Of Mr. 6prat appear TO to be
very we'll devised and in point Of mechanical construction,
the best have
Il 10 to be hoped that the use these Rods may become
which be regarded Of ordinary magnitude 10
which all buildings are liable r. s1LIMAN, Jr,
Prof Of Chem. in the University Of Louisville
Leu1svILLK, January q, 1851.
All orders left at ANDREW DUFFY's Stove Manufactory
It'll street, viii be promptly attended to; or at GEORGE
BELLS Alexandria, Va Of King and st. Asaph