The Sun.
London, England, 1840-06-16 00:00:00

ATMOSP E IC RAIL WAY.
TO THE • ITOR OF THE SUN.
Ste)—Your Jourratfof the 12th inst. contained an ar-
ticle, intitled Clegga' Atmospheric Railway." A
reference to The Sun Newspaper, the Railway Magazine,
Railway Times, and Mining Journal, of about 20th of
February, 1838, will show, in the report adopted by a
public meeting of the shareholders in the " Pneumatic
Railway Association," that I am the author and patentee
of the Pneumatic or Atmospheric Railway. Mr. Clegg's
name is mentioned in the report as having been examined
by the Committee of Inquiry; on the subject of my inven-
tion, which he,in connexion with Mr. Samuda, the engine
manufacturer, and-others, are now pirating, without even so
much as a colourable variation of the invention, the details of
which they were taught by me whilst canfidentiallyemployed.
Having laboured in respect of this subject since the year
1825, and expended some thousand pounds in the endea-
vour to introduce it into public use, and being injured by
ray former servants, I trust the circumstance and the facts
that I shall now state will induce you to accord to me the
justice of inserting this communication in your respectable
and widely-circulated Journal.
To understand the character of the proceedings of
Messrs. Clegg and Samuda, and other persons mentioned
in the said report, who aro now aiding them, it will suffice
to state that, in 1837, Messrs. Samuda wore the manufac-
turing engineers employed to construct the principal part
of the works and machinery which were intended for de-
monstrating the practicability of the pneumatic or at-
mcspheric system of railway, which was intended
to be made on the Birmingham, Bristol, and Thames
Junction Line, that Mr. Clegg who was then con-
nected in business with Messrs. Samuda, was con-
fidentially employed by Me in respect of this inven-
tion; that the detailed experiments in the construction, of
the works were, during many months, going on under the
immediate inspection of Mr. Clegg, and the Samudas,
with whom, from day to day, I held confidential communi-
cation, by reason ef their employment, as documentary
evidence under the hands of the parties, now in my posses-
sine, will prove, and Samuda sued the party now aiding
them for 500/ , in respect to those detailed experiments
made for my projected system.
These works were expressly constructed to be applied
to the Birmingham, Bristol, and Thames Junction Rail-
way, as the first published prospectus of that railway will
show. and of dimensions suitable to the identical spot on
which the demonstration has now taken place, but for a
more efficient power, and in accordance with the two
patents sealed by me :n 1834 and 1836. The engine ices
a 30-horse steam-engine, the pneumatic mains were 13}
inches diameter, therafora of about double the pow. r now
exhibited.
Messrs. Clegg and Samuda have betrayed the confi,leece
I reposed in them, and have, in connection with parties I
am now suing at law, pirated my invention in all its de-
tails, the combinations of which are of such a na-ure, Oe,t
to et it any one of them, a practical operation would be
impossible. My recorded sp,:cilleatiotis arc the evidence of
this—Mr. Clegg witnessed the experiments that I made
in 1835. I hold for this invention patents in Great Bri-
tain, on the Continent, and in Amcrica, and I bav,,gl,eady
incurred the expenditure of te•ousAnds in respect of them
No piracy of the invention has ever been attempted ex-
cept by those who from time to time have been emp!ojed
to construct works, &c., for cart.) ing out my ptojection.
Mr. Clegg, under the deceptive title of .4 linpreve-
ments in Valves (applicable to pumps)" watt permitted to
run through patents without notice to me, although i had
caveats entered in the proper offices, notwithstanding which
I was designedly kept in ignorance of his application for
patents, which I would upon proper notice have prevented
im from obtaining, but which nevertheless cannot be

maintained.
I have a right of property in the invention which is in.
jured, not only by aw piracy but by the publicity given to
it through the public journals. The works formerly con-
structed by Sainudas and others for roe were at the very
threshold of completion and public demonstration, out of
funds belonging to rn.,, broken up and sold off by unprin-
cipled men, the very parties now encouraging the piracy,
and at the moment when i was about to solve a scientific
problem. which would have destroyed the prejudice with
which I bad had to contend for years.
My redress of course is at law, slow in its operations,
but I doubt not sure in a case of such a character,
am, Sir, your obedient humble servant,
HENRY PINKUS,
Old Slaughter's Hotel, June 13, 1840.

ANTI-SLAVERY CON VENTLON.

TO THE EDITOR OF THE SUN.

RESPECTED SIR,—I notice in your Paper to-day the
following
" Rev. Mr. Grew argued very shortly in favour of the
original motion in favour of the admission of the ladies."
Tbis is incorrect. I argued in opposition to the motion.
I am persuaded jou will do me the justice (as I deem it a
matter of importance) to correct the error immedia►ely in
your Paper.
I do not notice any reference to the interesting fact of
the presentation by myself to the venerable Cbairman, Mr.
Clarkson, of a history of the Pennsylvania Hall. sent to
that revered pioneer of liberty, by Mr. Samuel Webb, of
Philadelphia. You will oblige Mr. W. by stating the fact
in your Paper. Very respectfully,
London, June 13, 1840. HENRY GREW.