Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-10-08
Protection from Lightning.

FIHE undersigned being the duly appointed Agent Of
NeRoD MASUPAcToRI Covington, Kentucky begs to offer
these superior Rods of spirawsed Carbonized Anneaed
Iron with Zinc Protectors and Electropoive elements
combined in their manufacturer thus rendering them equal
to copper conductors They in enet lengths, with
style of metallic (patened attachments for brick
frame buildings; also, glass isoaters Of novel and inge
mounted with solid platinum silver point, (patented)
twelve inches long, surrounded at the base with three ang
o I e n
most fearful Thunderstorm and embrace the entire perec
ton OF science up to the present me the whole consttu
ting the most magnificent and perfect silent conductor
presented to the public. rr Ia
Safety has been compromised by afordng these ex
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
strated by the when unmagnstiaed points
have shown but slight results though placed under the
conditions In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
suspect any being present.
tent you hereby cautioned against laying yourselves
LIABLE by purchasing Of those who not authorized
appointed can show their certificates Have good rods or
none. CHARLES w. HEYDON,
Washington City.
do hereby certify that have app lied various powerful
chemical reagents to sprats Patent Points for Lightning
Rods and that the results Of these experiments convince
that they will resist the action Of atmospheric causes and
thereby preserve the extremity sharpa condition most
in the above experiments were solution Of chloride Of 50
dunn, common sa acetc acid sulphurc acid hydro.
choric 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 LEooNTE, Prof Of Nat Phil ct Chsm
UNIVERSITY 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, KY, February 20, 1850.
CHICAGO, September Q, 1851
This may certify that have examined, somewhat crit-
cally James spratts Patent Lightning Rods that am
of opinion that is constructed scientific principles
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, 1880
This will certify that have examined the Lightning
Rods Metallic Points and Isosting Attachments,
featured by Mr. sprat and regard them constructed
conformity to the general laws Of the electric uid the
metallic compound constituting the Points, promising,
from the result of tests to which they submit
most likely 10 corrode them. A. MEANS,
Prof Phys &c., Emory College, Ga, and Prof Chem and
Pharm., Medical College, Ga. r.
The Lightning Conductors put up by Mr. Henry NJ Smith,
of this city, the plan Of Mr. Spra appear TO TO be
very well DEVISED and In point Of mechanical construction
are tho best have seen !.
1t Is be hoped that the these Rods may become
general important auxiliary defence against danger
which must be regarded Of ordinary magnitude to
Prof Of Chem. in the University of Louisville
LOUISVILLE, January n, 1851.
All orders LEFT at ANDREW DUFFYs Stove Manufhctory
7th street, will be promptly attended to; GEORGE
BELLS Alexandria, Va, corner of King and st. Asaph
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