IMPROVEMENTS IN PRODUCING YELLOW COLOURING MATTER SUITABLE FOR DYEING AND PRINTING to be as follows
Year: 1884

page_text: This Specification was, upon the 27th day of March 1890, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
I, WILLIAM WEIR GRIEVE, of 151 St Vincent Street, Glasgow, in the County of
Lanark, North Britain, Solicitor do hereby declare the nature of the said invention
for "IMPROVEMENTS IN PRODUCING YELLOW COLOURING MATTER SUITABLE FOR
DYEING AND PRINTING to be as follows:-
وو
This Invention which relates to improvements in producing Yellow Colouring
Matter suitable for dyeing and printing is a development of the Invention for
producing Yellow Colouring Matter for which an application for a Patent has been
made by John Erskine, of 151 St Vincent Street, Glasgow aforesaid, Partner of me
the said William Weir Griove dated 19th June A.D. 1884 N° 9162.
The present improvements consist in the substitution of Tetrazo-ditolyl or
Tetrazo-dixylyl for Tetrazo-diphenyl as described in the aforesaid Provisional
Specification of the said John Erskine.
The Diphenyl bases from which the aforesaid Tetrazo combinations result are
obtained by a process analogous to the method used in making Benzedine from
nitro-toluol or nitro-xylol.
In using Tetrazo-ditolyl or Tetrazo-dixylyl as a substitute for Tetrazo-diphenyl
in producing yellow colouring matter the process is the same as that described in
the aforesaid Specification of the said John Erskine.
J. H. JOHNSON, DAY & JOHNSON,
Petitioner's Agents,
115, St. Vincent Street, Glasgow.

page_text: COMPLETE SPECIFICATION (AMENDED).
I, WILLIAM WEIR GRIEVE, of 151 St. Vincent Street, Glasgow, in the County of
Lanark, North Britain, Solicitor do hereby declare the nature of the said invention
for IMPROVEMENTS IN PRODUCING YELLOW COLOURING MATTER SUITABLE FOR
DYEING AND PRINTING and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This Invention, which relates to improvements in producing yellow colouring
matter suitable for dyeing and printing, is a development of the Invention for
producing yellow colouring matter for which an application for a Patent has been
made by John Erskine of 151 St. Vincent Street, Glasgow aforesaid, Partner of the
said William Weir Grieve dated 19th June A.D. 1884 No. 9162.
The present Improvement consists in the substitution of Tetrazo-ditolyl or
Tetrazo dixylyl for the Tetrazo-diphenyl described in the Provisional Specification
of the said John Erskine.
The Diphenyl bases from which the aforesaid Tetrazo combinations results, are is
obtained from nitro-toluol or-nitro-xylol by a process analogous to the method used
in making Benzidine from nitro-benzol.
In using Tetrazo-ditolyl or Tetraze dixylyl as a substitute for Tetrazo-diphenyl
in producing yellow, colouring matter the process is the same as that described in
the aforesaid Specification of the said John Erskine.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed, I declare that what
I claim is
The production of a yellow colouring matter by or through the action of Tetrazo-
ditolyl or Tetrazo dixylyl on Oxy benzoic Acid and in particular on Salyiciylic Acid
or Phenol or Cresel-ull in manner substantially as hereinbefore described.
Dated this twenty eighth day of
J. H. JOHNSON, DAY & JOHNSON,
Applicant's Agents.

page_text: PROVISIONAL SPECIFICATION.
I, WILLIAM WEIR GRIEVE, of 151 St Vincent Street, Glasgow, in the County of
Lanark, North Britain, Solicitor do hereby declare the nature of the said invention
for "IMPROVEMENTS IN PRODUCING YELLOW COLOURING MATTER SUITABLE FOR
DYEING AND PRINTING" to be as follows:-
This Invention which relates to improvements in producing Yellow Colouring
Matter suitable for dyeing and printing is a development of the Invention for
producing Yellow Colouring Matter for which an application for a Patent has been
made by John Erskine, of 151 St Vincent Street, Glasgow aforesaid, Partner of me
the said William Weir Grieve dated 19th June A.D. 1884 Nº 9162.
The present improvements consist in the substitution of Tetrazo-ditolyl or
Tetrazo-dixylyl for Tetrazo-diphenyl as described in the aforesaid Provisional
Specification of the said John Erskine.
The Diphenyl bases from which the aforesaid Tetrazo combinations result are
obtained by a process analogous to the method used in making Benzedine from
nitro-toluol or nitro-xylol.
In using Tetrazo-ditolyl or Tetrazo-dixylyl as a substitute for Tetrazo-diphenyl'
in producing yellow colouring matter the process is the same as that described in
the aforesaid Specification of the said John Erskine."

page_text: COMPLETE SPECIFICATION.
I; WILLIAM WEIR GRIEVE, of 151 St. Vincent Street, Glasgow, in the County of
Lanark, North Britain, Solicitor do hereby declare the nature of the said invention
for IMPROVEMENTS IN PRODUCING YELLOW COLOURING MATTER SUITABLE FOR
DYEING AND PRINTING and in what manner the same is to be performëd; to be
particularly described and ascertained in and by the following statement :—
This Invention, which relates to improvements in producing yellow colouring
matter suitable for dyeing and printing, is a developement of the Invention for
producing yellow colouring matter for which an application for a Patent has been
made by John Erskine of 151 St. Vincent Street, Glasgow aforesaid, Partner of the
Said William Weir Grieve dated 19th June A.D. 1884 No. 9162.
I The present Improvement consists in the substitution of Tetrazo-ditolyl or
Tetrazo-dixylyl for the Tetrazo-diphenyl described in the Provisional Specification
of the said John Erskine.
The Diphenyl bases from which the aforesaid Tetrazo combinations result, are
obtained from nitro-toluol or nitro-xylol by a process analogous to the method used
in making Benzidine from nitro-benzol.
J In using Tetrazo-ditolyl or Tetrazo-dixylyl as a substitute for Tetrazo-diphenyl
In producing yellow colouring matter the process is the same as that described in
the aforesaid Specification of the said John Erskine..
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed, I declare that what
'I claim is
The production of a yellow colouring mätter by or through the action of Tetrazo-
ditolyl or Tetrazo-dixylyl on Oxy-benzoic Acid and in particular on Salycilic Acid
or Phenol or Cresol all in manner substantially hereinbefore described.
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