Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-08-13
Protection from lightning.

rNUE undersigned, being the duly appointed Agent OF
SPRATT's ELECTRICIAN ELECTRO oMErAILuRGIsr LIGHT
a-RoD MASUrAcroRr, Covingon, Kentucky begs to oer
superior Rod spraltwisted Carbonized Anneaed
combined In their manufactured thus rendering them equal
to copper conductors They in tenfeet lengths with
accuratelyftted connecting joints entire
new style OF metallic pntente attachments for brick
frame buildings ALSO glass isoaters OF novel and inge
moun.sa wS S psnum Ysr point
twelve inches long, at the base with three
lar negative magnets which the TO an extra
ordinary extent Of dscharng the opposite elements OF the
most fearful Thunderstorm and embrace the entire perec
ton Of science up to the precnt tme the whole constitu-
ting the most magnificent and perfect silent conductor ever
presented to the public.
Safety has not been compromised by aordng these
oeeRt rods at such low rates. the greatest attention has
been given their construction be readily attached
The astonishing power of the negative magnets In dischnr
sfstsd by the Elsctromser when unmasnstaed points
have shown but slight results though placed under the
conditions In c they gather and silently discharge
electricity from the atmosphere when you would scarcely
These improvements being secured by double letters pa
tent hereby cautioned against laying yourselves
abis purchasing Of those who not authorized
who are substituting inferior limitations. All agents duly
appointed show their cetcates Have good rods or
none. CliARLES W. iIElpON,
Washington City.
do hereby certify that app lied various powerful
chemical reagents spras Patent Points for Lightning
Rods and that the results OF these me
thereby the extremity sarpa condition most e
sentia protection against lightning The Reagents used
diu common SALT acetic acid sulphurc acid and hydro
chlorc acid With The FIRST there action on the
metal with the several acids there very g-a fact
sufficient to show that atmospheric influences would have
o sensible effect.
JoHNLEcoNTE, Prof Of Nat Phil ct Chem.
UNIVERSITY GA, October s, 1850
The Lightning Conductors of Mr.. sprat, offered to me-
calculated to perform the office for which they are
Intended. Yours truly, Prof R0BT PETER.
LEINoroS, KY, February 90 1850.
CHICAGO, September g. 1850.
This may certify that have examined, somewhat Gr-
of opinion that constructed scientific principles For
combining durability, chespness, and efficacy deem
equal and think SUPERIOR to any other rod ever offered
for my inspection Prof JAS. v. r. BLANEY.
AUGUSTA, GA November IL, 1850.
This will certify that have examined the Lightning
Rods Metallic Points and Isoating Attachments manu-
facured Mr. Spra and regard them constructed In
conformity general laws OF the electric fluid; and the
meaic compound constituting the Points promising,
from the result several to 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
Phsrm, Medical College, Ga.
The Lightning Conductors put up by Mr. Henry W. Smith,
this city, the plan Of Mr. Sprnt appear 10 me 70 e
very we'll devised and in point Of mechanical construction
the hest have seen.
II hoped that the Of those Rods msy bccome
general important auxiliary defence against danger
which be regarded Of ordinary magnitude To
which all buildings are liable. H. blLlMAN, Jr,
Prof Of Chem. in the University Of Louisville.
LOUISVILLE, January q, 1851.
All orders left at ANDREW DUFPYs Stove Mandatory
7th street. will be promptly attended to- or at GEORGE
BELLS Alexandria, Vs corner Of King and st. Asaph st
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