Manufacture of Azo-colouring Matters.
Year: 1898

page_text: Manufacture of Azo-colouring Matters.
1, OLIVER IMRAY, of Birkbeck Bank Chambers, Southampton Buildings, in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention (as communicated to me from abroad by The Farbwerke vormals Meister
Lucius and Brüning, of Hoechst a/Main, Germany, Chemical Manufacturers,)
to be as follows:-
:-
My foreign correspondents obtain new and valuable colouring matters by the
following process.
or
They combine 2: 5 : 7-amidonaphthol-sulphonic acid, 1: 84: 6-amido-
naphtholdisulphonic acid or the alkyl derivatives of amidonaphthol mono-
disulphonic acids, such as, 2 5 7 ethyl- and methyl-amidonaphtholsulphonic
acids, 1:8:3:6 ethylamidonaphtholdisulphonic acid, with diazotised picramic acid.
EXAMPLE.
To a solution of 26.7 kilos. of 2-ethylamido-5-naphthol-7-sulphonic acid, made
alkaline with soda, is added the diazo-compound of 22.1 kilos. of pieramic acid,
obtained according to the Specification No. 11437 of 1898.
The formation of the dyestuff is complete after several hours and the solution is
then boiled, precipitated with common salt and pressed. When in a dry state, the
dyestuff has the form of a brilliant greenish black powder, soluble in water with a
blue red colour, which is not changed by alkalies, it is soluble in concentrated
sulphuric acid with a red colour and it dyes wool violet-black shades which become
deep black on subsequent treatment with chromium compounds.
In a similar manner are obtained dyestuffs from the other amidonaphthol-sulphonic
acids above mentioned.
Dated thin 2nd day of December 1900
ABEL & IMRAY,
Agents for the Applicant.
I, OLIVER IMRAY, of Birkbeck Bank Chambers, Southampton Buildings, in the
30 County of London, Chartered Patent Agent, do hereby declare the nature of this
invention (as communicated to me from abroad by The Farbwerke vormals: Meister
Lucius Brüning, of Hoechst a/Main, Germany, Chemical Manufacturers,) and
Price 8d1

page_text: in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My foreign correspondents obtain new and valuable colouring matters oy the
following process.
They combine 2: 5: 7-amidonaphthol-sulphonic acid, 1: 8:4: 6-amidonaphthol-
disulphonic acid or the alkyl derivatives of amidonaphthol mono- or disulphonic acids,
such as 2: 5: 7 ethyl- and methyl-amidonaphtholsulphonic acids, 1: 8: 3: 6 ethyl-
amidonaphtholdisulphonic acid with diazotised picramic acid.
EXAMPLE.
To a solution of 26.7 kilos. of 2-ethylamido-5-naphthol-7-sulphonic acid, made
alkaline with soda, is added the diazo-compound of 22.1 kilos. of picramic acid,
obtained according to the Specification No. 11437 of 1898.
The formation of the dyestuff is complete after several hours and the solution is
then boiled, precipitated with common salt and pressed. When in a dry state, the dye-
stuff has the form of a brilliant greenish black powder, soluble in water with a blue
red colour, which is not changed by alkalies, it is soluble in concentrated sulphuric
acid with a red colour and it dyes wool violet-black shades which become deep black
on subsequent treatment with chromium compounds.
In a similar manner are obtained dyestuffs from the other amidonaphthol-sulphonic
acids above mentioned.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The herein described manufacture of mono-azo-dyestuffs by allowing diazotised
pieramic acid to react with 2:5: 7-amidonaphtholsulphonic acid, with 1:8:4:6-
amidonaphtholdisulphonic acid or with the alkyl derivatives of amidonapthol-inono-
and-disulphonic acids.
2. The dyestuffs manufactured as above set forth.

page_text: Date of Application, 3rd Dec., 1898-Accepted, 14th Jan., 1899
COMPLETE SPECIFICATION.
Apparatus for Transmitting Motion to a Distance by Means of
Electrical Energy.
We, SIEMENS BROTHERS & Co. LIMITED, of 12, Queen Anne's Gate, West-
minster, S.W., in the County of London, Electrical Engineers, do hereby declare
the nature of this invention (as communicated to us from abroad by Siemens &
Halske Aktien Gesellschaft, of Markgrafen Strasse, No. 94, Berlin, S.W., Ger-
many, Electrical Engineers), and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement:--
In the arrangements described in the Specification to our Patent No. 8041 of
1897 for transmitting motion to a distance when using rotary phase currents the
motion of the transmitting apparatus or motor is effected either in the same direc-
tion as the rotary field, or in the contrary direction.
If the motion is effected in the same direction as the rotary field the motion is
assisted by the energy supplied by the primary machine, so that the mechanical
energy required for moving the transmitting instrument is less, for a certain
expenditure of energy in the receiving instrument, when the motion is in the
same direction as the rotary field, than when it is in the contrary direction.
If only movements in one direction are transmitted as in the case of transmit-
ting the motion of a normal clock to a number of subsidiary clocks, or in the
synchronous transmission of continuous motion, the above fact is of course of no
consequence; according to the purpose in view, the transmitting motors would
be so arranged that the transmitted motion is either in the direction of or con-
trary to the rotary field. Thus in the application of the system to central electrical
clock installations it would be of advantage to arrange the central clock, operating
as the transmitter to move in the direction of the rotary field, in order to obtain
the requisite driving power at the receiving clocks with small expenditure of
power at the central clock.
On the other hand with a synchronous transmission of rotation with consider-
able speed, it is of advantage, to drive the transmitter in the contrary direction
to the rotary field in order to obtain a sufficient coupling power with high speeds
of rotation.
If however motion requires to be effected in both directions disadvantages arise
from the fact that a greater mechanical power is required for driving the trans-
mitter in the one direction than in the other. Furthermore, in particular with a
weak magnetisation of the transmitter and receiver, if the transmitter be worked
with rapid step by step movements in the direction of the rotary field, it is
liable to assume a continuous motion in that direction, which may cause irregu-
larity in the correct transmissions.
According to the present invention the said disadvantages are avoided by con-
structing both the transmitter and the receiver of two mechanically coupled
motors.
These motors are so connected electrically that the rotary fields produced in the
two coupled motors are of opposite direction.
By this means on the transmission of a certain turning moment the mechanical

page_text: power expended at the transmitter is independent of the direction of rotation ;
also, the apparatus can be employed for any speed of rotation in either direction,
and rapid step by step movements do not cause any uncertainty of action.
On the accompanying drawing is shewn by way of example a diagram of such
an arrangement.
D is the primary rotary current machine with three terminals A, B, C, to which
are connected the three current leads F1 F2 F3
To these the windings of the fixed part of the transmitter G¹ are connected at
A B C and those of G2 at A2 B2 C2, while those of the receiver E¹ are connected
thereto at a¹ b c and E² at a² 6² ², the connections being such that the rotary
fields of G and G2 as also of E¹ and E2 are respectively in opposite directions,
as indicated by the crossing of the respective leads, by the different sequence of
their connection with the main leads and also by the arrows.
The windings of the moveable part of the transmitter G¹ are connected with
those of the receiver E¹ by the leads L' L2 L3 and those of the transmitter G2 with
those of E2 by the leads MM² M³, as described in the said former patent for the
single machine arrangement.
The transmitters G1 G2 as also the receivers E¹ E2 are respectively connected
together mechanically by shafts H and h.
The transmitters & G² can be coupled together in any optional positions of
the moveable parts relatively to the fixed parts.
The mechanical connection of the receivers E and E2 must be such that with
the same relative positions of the fixed and moveable windings of the trans-
mitter G and receiver E¹, the fixed and moveable windings of transmitter G² and
receiver must also have the same relative positions, as shewn on the drawing.
When the four apparatus GG2 E2 are connected to the source of rotary phase
current, the receivers E¹ E2 will assume exactly the same position as the trans-
mitters G1 G2.
If the latter are turned through a certain angle, the receivers E¹ and E' will
also be turned through the same angle in the same direction.
The motion is effected in such manner that in the mechanically connected
apparatus the one apparatus always turns in the direction of the rotary field while
the other turns in the contrary direction thereby obtaining the above mentioned
advantages.
The transmitter and receiver are of exactly the same character, so that the motion
can be transmitted from the receiver to the transmitter just the same as the con-
verse.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
In apparatus for electrically transmitting motion to a distance such as is herein
referred to, constructing both the transmitting and the receiving apparatus of two
precisely similar apparatus of the kind described in Specification No. 8041 of
1897 mechanically coupled together and so connected to the supply leads that the
rotary field of the one apparatus of each coupled pair has the opposite direction
to that of the other one, substantially as described.
Dated this 3rd day of December 1898.
ABEL & IMRAY,
Agents for the Applicants.