Daily American telegraph., 1852-07-09
Protection from lightning.

U,HE undersigned, being the duly appointed Agent Of
sPRA4r,s ELEcERlcAN ELEorRo METAILuhalsr Idaar
eRoD MxrurAcronr Coyington Kentucky, begs TO offer
these superior Rods Of CarbonIed Anneaied
ls with zns ProtsctS and ,s them sous
copper conductors They are IN teneet lengths WAN
acknowledgement brsssscrew connecting lon an sntas
frame buildings; Also glass solaters, OF novel and inge-
nious construction, (patsnted forming lock the whole
mounted with solid platinum silver point (patented)
twelve inches long, at the base with three angu
lar negative magnets which possess the power 70 an extra
ordinary extent dschargng the opposite elements Of the
most fearful Thunderstorm embrace the entire perc
ton up to the present tme the whole constitu
ting magnificent and perfect silent conductor ever
SAFETY has not been compromised by aording these ex
ceent rods such low rates the greatest attention has
hen given To their be readily attached
The astonishing the negative magnets IN dischar
ing the air of Its opposite elements has been clearly demon
strated by the Eectrometer, when unmagnezed points
have shown but slight results though placed under the
conditions In fact they gather and silently aischarge
electricity from the atmosphere when you would scarcely
These being secured 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 can show their certificates Have good rods or
none. -n.r"ts pH" CHAHLES ". aEluoN3 E.
Washington City.
do hereby certify that have app lied various powerful
chemical reagents to spratts Patent Points for Lightning
Rods and that the results these experiments convince
that they will resist the action q atmospheric causes and
senti protection against lightning The 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 acids there very sgha fact
sufficient show that atmospheric influences would have
JOHN LECoNTE, Prot. Of Nat phf ct Chem,
UNIVERSITY OF Ga, October 8, 1850.
The Lightning Conductors Of Mr. spratt, offered to me-
well calculated to perform the Office for which they
intended. Yours truly, Prot. R0BT PETER.
LEXINGTON, KIT, February TO- 1850.
CHICAGO, September 3, 1860
This may certify that have examined, somewhat crt
cay James Spratts Patent Lightning Rods and that
opinion that is constructed on scientific principles For
combining durability cheapness, and eficacy deem
equal think SUPERIOR to any other rod ever offered
for my inspection. Prof JAS. v. q BLANEY.s
| AUGUSTA, (GA) November II, 1885,
This will certify that have examined the Lightning
Rods, Metallic Points, and Isoating Attachments manu-
factured by Mr. Sprat and regard them constructed In
conformity the general laws of the electric fud and the
metallic compound constituting the Points, as promising
the result of several tests to which they were submit
ted to resist for years the action OF those causes
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 up by Mr. Henry NJ. Smith
of this city, the plan of Mr. Sprat appear to me to be
very well devsed and in point Of mechanical construction
are the best have
is bo hoped that the Of these Rods become
general important auxiliary defence against danger
which be regarded of ordinary magnitude, to
which all buildings are liable r. SILIMAN, Jr,
Prof. of Chem. in the University Of Louisville.
LOUISVILLE, January q, 1851.
All orders left at ANDREW DUFFY'S Stove Manufctory
7th street. will be promptly attended to- or at GEORGE
BELLS Alexandria, Na corner OF King and st. Asaph st
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