Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-11-06
Protection from Lightning.

T,HE undersigned being the duly appointed Agent Of
spR4ITs EIEerRlcaS AND METALIuRdIsr LIaar
these superior Rods Carbonized Anneaed
Iron with Zinc Protectors and Eecropostiye elements
combined in their manufacturer thus rendering them equal
to copper conductors They are in teeet lengths with
accurately fitted bassscrsw connecting joints, entrs
buildings; also, glass isolaters of novel and inge
NOUS construction lpatfEed forming Lock; the whole
twelve inches long, at tho base with three ang
lar negative which the power to extra
fearful thunderstorm and embrace the entire perfec
ton Of science up to TIE present time the whole constu
ting the most and perfect silent conductor ever
Safety has not been compromised by aordng these ex
set rod, At low the e e. has
The astonishing power of the negative In dscharg
ing the sr q y Opposite has sesn ossgrs %
have shown but slight results though placed under the
condons In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
These being secured by double letters pa
tent you hereby cautioned against laying yourselves
liable by purchasing of those who authorized,
who are substituting inferior limitations All agents duly
appointed can show their certificates Have good rods or
none. CHARLES w nEiDON,
.~t Washington City.
do hereby certify that app lied various powerful
chemical Reagents sprats Patent Points for Lightning
Rods and TINT the results of these me
that they will the action of atmospheric causes and
thereby preserve the extremity condition most ca
senal to protection against lightning The reagents used
In the above experiments solution Of chloride of ST.
dum, common SALT acec acid suphurc acid and hydro
chlorc acid With the first there no action The
metal with the several acids there very sga fact
sufficient show that atmospheric influences would have
sensible effect.
JOHN LECoNTE, Prof of Nat. Phil. etChem.
UNIVERSITY OF Ga, October s, 1850. Ja4
The Lightning Conductors of Mr. spratt, offered to me-
well calculated to perform the Office for which they are
LEXINGTON, KY February 20, 1850
CHICAGO September 8, 1901
This may certify that have examined somewhat criH
csy, James sprtts Patent Lightning Rods, and that a
Of opinion that 1t Is constructed scientific principles For
combining durability, cheapness and efficacy, deem II
equal and think SUPERIOR 10 any other rod ever offered
for my inspection Prof. JAS. " z. BLANEY.
AUGUSTA, (GA) November IL, 1850.
This win certify that have examined the Lightning
Rods Metallic Points and Isolating Attachments, manu-.
featured by Mr. Sprat and regard them constructed in
conformity 10 the general laws the electric uid and this
metallic compound constituting the Points as promising,
from the result of several tests to which they submit
ted to resist for years the action of those atmospheric
most likely 10 corrode them A. MEANS,
Prof Phys. Sc, Emory College, Ga, and Prof Chem and
Phsrm. Medical College, Ga.
The Lightning Conductors put up by Mr. Henry Smith,
Of this CITY, the plan Of Mr. SPrat appear to to be
very well devised in point of mechanical construction
are the best have seen. =
II Is to be hoped that the of these Rods may become
which must be regarded Of ordinary magnitude t1
which oil buildings are liable. r. SILIMAN, Jfj
Prof Of Chem. IN the University Of Louisville.
LOUISVILLE, January 27 1851.
All orders left at ANDREW DUFFYs Stove Mandatory,
18th street. will be promptly attended to; or at GEORGE
BELLS Alexandria, Va OF King and St. ARaph ss
ap LIFT