Daily American telegraph., 1852-09-14
Protection from Lightning.

TIME undersigned being the duly appointed Agent Of
sPRATTs ELECTRICIAN AND ELEcrRo-METAILuheisT LIGHT
MNdRoD MANDATORY Covington Kentucky begs to offer
these superior Rods OF Carbonized Anneaed
ron with Zinc Protectors, and elements
combined in their manufacturer thus rendering them equal
copper conductors They in eneet lengths, with
accurateytted brass connecting joints an entire
style of metallic paented attachments for brick or
frame buildings; also, glass soaters of novel and inge-
NOUS construction (patened0 forming lock; the whole
mounted with solid platinum silver point, patented1
twelve inches long, surrounded at tho base with three angu
lar negative magnets which possess the to an exa
most fearful thunderstorm and embrace the entire perfec
ton Of science up 10 the present me the whole constu
ting the most magnificent and perfect silent conductor ever
presented to the public
Safety has not been compromised by afordng these
eent rods such low rates the greatest attention has
given their construction be ready attached
The astonishing power of the negative In dscharg
Ing the air Of opposite elements has been clearly Demon
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
These being by double letters pa
tent you hereby cautioned against laying yourselves
table, by purchasing of those who not authorized or
who substituting inferior limitations All agents duly
appointed show their certificates Have good rods or
none CHARLES W. HEfDON,
Washington City.
do hereby certify that app lied various powerful
chemical reagents spratts Patent Points for Lightning
that they will the action of atmospheric causes and
thereby preserve the extremity sharpa condition most e
senta TO protection against lightning The Reagents used
In the above experiments solution OF chloride OF 30
dum common SALT acetc acid suphurc acid and hydro
chlorc acid With the FIRST there action on the
METAL with the several acids there very ga fact
sufficient to show that atmospheric influences would have
no sensible effect.
JOHNLEcoNTE, Prof Of Nat. Phil. etchem.
UNIVERSITY or Ca, October s, 1850.
The Lightning Conductors Of Mr. spratt offered to me-
well calculated to perform the office for which they are
intended. Yours truly, Prof R0BT. PETER.
LEXINGTON, KY, February 20, 1850.
CHICAGO September 3, 1850.
This may certify that have examined somewhat crit
cay James spratts Patent Lightning Rods and that
Of opinion that 1t Is constructed scientific principles Por
combining durability, chespness, and efficacy, deem IL
equal and think SUPERIOR to any other rod ever offered
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 Isolating Attachments, manu-
featured by Mr. Spra and regard them constructed In
conformity to the general laws Of the electric uid and the
from the result Of several which they submit
ted resist for years the action Of those causes
most likely to corrode them. A. MEANS,
Prof Phys. Sc, Emory College, Ca and Prof Chem and
Pharm. Medical College, Ga.
The Lightning Conductors put mp by Mr. Henry Smith,
Of this CITY, the plan OF Mr. Sprat appear TO me TO be
very well devised and in point Of mechanical construction
n "a 10 be boped that the use Of these may
which must be regarded Of ordinary magnitude TO
which all buildings liable. X. sILIMAN, Jr,
Prof Of Chem. In the University Of Louisville.
LOUISVILLE, January "a 1851.
All orders left at ANDREW DUFFYs Stove Mandatory
9TH street. will be promptly attended 70, az GEoTeE
BELLS Alexandria, Va Of King and st. Asaph s
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