Daily American telegraph., 1852-10-28
Protection from Lightning.

V,HE undersgned being the duly appointed Agent Of
NaRoD MANuFAcroRY Covngton, Kentucky, begs to offer
these superior Rods of Carbonized Anneaed
combined in their manufacture thus rendering them equal
copper conductors They In eneet lengths with
m e os
frame buildings also, glass solaters Of novel and inge
NOUS construction Pstentedo forming lock- the whole
mounted with solid platinum silver point, patented)
twelve inches long at the base with three angu
lar negative magnets which the power to extra
most fearful Thunderstorm embrace entire perc
ton Of science to the present times the whole consttu
ting the most magnificent and perfect silent conductor ever
presented to the public #4aa .tU1i1l t
Safety has not been compromised by afordng these
ceent such low rates the greatest attention has
given their construction to be readily attached
The astonishing Of the negative In dscharg
srsted By the Elsctromser when unmagnetzed points
have shown but slight results though placed under the
same conditions In fact they gather and silently discharge
electricity from the atmosphere when would scarcely
suspect any being present
These improvements being secured by double letters pa
tent you hereby cautioned against laying yourselves
liable by purchasing Of those who not authorized
who are substituting inferior limitations All agents duly
seR'so can 'n0" n'' cHkIEs aESbo fSSf
@ Washington City.
do hereby certify that app lied various powerful
chemical reagents spratts Patent Points for Lightning
Rods and that the of these experiments convince
that they will the action of atmospheric causes and
thereby the extremity condition most es
sentia to protection against lightning The reagents used
in the above experiments solution of chloride of
dium common sat acetc acid suphuric acid and hydro
chlorc acid With the first, there action the
metal with the several acids there very sga fact
sufficient show that atmospheric influences would have
: JOHN LECoNTE, Prof, of Nat. Phil. ct Chem.
UNIVERSITY OF GA, October 8, 1850. M sett.ttrs
The Lightning Conductors of Mr. spratt offered to me,
are ws calculated to perform the Office for Which they are
LEXINGTON, KY. February 20, 1885, : 80
CHICAGO September 8, 1851
This may certify that have examined somewhat criti-
oally James Sprats Patent Lightning Rods and that
Of opinion that It Is constructed seenRc principles For
combining durability, cheapness, and efficacy, deem il
equal and think SUPERIOR to any other rod ever 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 Isolatng Attachments,
facured by Mr. Spra and regard them constructed in
conformity the general laws of the electric uid and the
metallic compound constituting the Points promising,
from the result Of several tests 70 which they were submit
ted resist years the action OF those atmospheric
most likely TO corrode them. A. MEANS,
Prof Phys. &c.. Emory College, Ga and Prof Chem. and
Pharm, Medical College, Ga
The Lightning Conductors put by Mr. Henry NJ Smith,
this city, the plan Of Mr. sprat appear to TO be
very well devised and point Of mechanical construction,
the best have ever seen.
to hoped that the Of these Rods may become
general important auxiliary defence against danger
which be regarded of ordinary magnitude, to
which all buildings are liable. X. SlLlMAN, Jr,
Prof of Chem. In the University Of Louisville.
LOUISVILLE, January 27 1851. Us tN
All orders left at ANDREW DUFFYs Stove Mandatory,
7th street. will be promptly attended to- or at GEORGE
BELLS Alexandria, va Of King and st. Asaph SITS.
apA-t