Daily American telegraph., 1852-06-29
Protection from Lightning.

|7,HE undersigned being the duly appointed Agent Oh
MANUFAoToRr, Covington Kentucky begs to oer
these superior Rods OF Spirawsted Carbonzed Annealed
Iron, with nc protectors and Eectroposive elements
IN their manufacturer thus rendering them equal
copper conductors They in teneet lengths, with
bressscrew connecting joints, enre
new style OF metallic patented attachments r brick or
frame buildings; also, glass solaers novel and nge
pious construction, (patented forming lock; the whoe
mounted with solid platinum silver point (patented
twelve inches long, surrounded at the three
liar negative magnets which possess the power extra
most fearful Thunderstorm and embrace the entire perfe
on of science TO the present time; the whole
ng the most magnificent and perfect silent conductor
.presented TO the public.
Safety has not been compromised by aording these ex
celent rods at such low rates. the greatest attention
ben given to their construction as TO be readily attached
he astonishing power of the negative magnets in discharg
ng the air Of its opposite elements has been clearly demon
haye but slight results though placed under the
conditions In fact they gather and silently discharged
Electricity from the atmosphere when you would SCARCELY
These improvements being secured by double letters PAL
ent you hereby cautioned against laying yourselvesl
abe by purchasing of those who not authorzed
lwho substituting inferior limitations All agents duly
appointed can show their certificates Have good rods o
]uone. 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 these expermens convince
That they will resist the action of atmospheric causes
Thereby preserve the extremity sharpa condition most es
sentia to protection against lightning The reagents used
lin the above experiments solution of chloride of
5 common SALT acetic acid sulphuc acid, and hydro
1chlorc acid. With the FIRST there action he
ametal with the several acids, there very slga fact
Sufficient to show that atmospheric influences would
Emo sensible effect. Nt.
JOHN LECoNTE. Prof of Nat. Phil. ct Chem.
UNIVERSITY OF GA, October 5, 1850.
The Lightning Conductors of Mr. spratt, offered to me
are well calculated to perform the Office for which they
3intcnded Yours, truly, Prof n0BT. PETER.
LEXINGTON, KY, February 20, 1850.
CHICAGO, September 8, 1850.
This may certify that have examined somewhat criuz
ally James Spratts Patent Lightning Rods and that am
aof opinion that constructed scientific principles For
acombining durability, cheapncss and efficacy, deem II
Sequa and think SUPERIOR to any other rod ever offered
Sfor my inspection. Prof JAS. " u. BLANEY.
AUGUSTA, (GA) November il, 1850
This will certify that have examined the Lightning
Rods Metallic Points, and Isolatng Attachments
actured by Mr. Spra and regard them constructed in
conformity to the general laws Of the electric ud and the
3metac compound constituting the Points, promising
from the result of severa tests to which they submit
ed resist years the action of those atmospheric
amost likely to corrodc them A. MEANS,
Prof Phys Sc, Emory College, Ga and Prof Chem. and
a aPharm., Medical College, Ga.
A The Lightning Conductors put upby Mr. Henry NJ. Smith,
of this city, the plan of Mr. Spra appear to to be
well devised and in point of mechanical construction
5are the best have
be hoped that the Of these Rods may become
general important auxiliary defence against danger
Switch must be regarded of ordinary magnitude, to
] (which all buildings arc liable. II. SILIMAN, Jr.,
Prof of Chem. in the University OF Louisville
LOUISVILLE, January y, 1851.
All orders left at ANDREW DUFFYs Stove Mandatory,
SBELLS Alexandria, Va of King and St. Asaph SITS
81 an l4-tf