A PROCESS FOR THE METALLIZING AND ELECTRO-GILDING OR PLATING OF NON METALLIC SUBSTANCES SUCH AS VULCANITE, CELLULOID AND THE LIKE SPECIALLY ADAPTED FOR DENTAL PURPOSES
Year: 1883

page_text: LETTERS PATENT to Charles Grey Hammersley of 106 Liverpool Road in
the County of Middlesex Telescope Manufacturer for an Invention of
"A PROCESS FOR THE METALLIZING AND ELECTRO-GILDING OR PLATING OF
NON METALLIC SUBSTANCES SUCH AS VULCANITE, CELLULOID AND THE LIKE
SPECIALLY ADAPTED FOR DENTAL PURPOSES " communicated to him from
abroad by Frederick James Lynam of Santiago in the Republic of Chili,
Doctor of Medicine
PROVISIONAL SPECIFICATION left by the said Charles Grey Hammersley
at the Office of the Commissioners of Patents on the 23rd May 1883.
CHARLES GREY HAMMERSLEY of 106 Liverpool Road in the County of Middlesex
Telescope Manufacturer "A PROCESS FOR THE METALLIZING AND ELECTRO-
GILDING OR PLATING OF NON-METALLIC SUBSTANCES SUCH AS VULCANITE,
CELLULOID AND THE LIKE [AND] SPECIALLY ADAPTED FOR DENTAL PURPOSES
[communicated to him from abroad by Frederick James Lynam of Santiago in the
Republic of Chili, -Doctor of Medicine]
"
This Invention has for its object a process for the metallizing and electro-gilding
or plating of non-metallic substances such as Vulcanite Celluloid and the like
and specially adapted for dental purposes
The plates are immersed in baths of which the following are the particulars.
Bath N° 1

page_text: Solution No.1
2 Grammes
(more or less according to size of article)
50
"
D° N° 25
Electric Bath N° 1
Aurum Chlorurum
Potassii Cyanurum
Water distilled
Electric Bath N° 2
Aurum Chlorurum
Potassii Cyanurum
Water distilled.
15
1500
""
"
"
+
6
"
30
1000
"
"
Electric Bath N° 3
Argent: Chlorurum
Potassii Cyanurum
(More or less)
Water distilled
6
"
30
"
"
1000
Immerse the article in Bath N° 1, 15 hours-take it out wipe and dry-immerse
in Bath N° 2, 30 minutes, wipe and dry it then return it to Bath N° 1 one hour-
dry it and return it to Bath N° 2, 15 minutes then return it again to Bath N° 1,
3 hours afterwards the article must be frequently immersed in Bath N° 1 and
dried till it assumes a steel colour but must not exceed more than 15 minutes each
single immersion-After this place the article in a cup or basin in sufficient of the
solution of Bath N° 2 to cover it, then add N° 1 solution placing said cup or basin
in hot water as a slight heat is necessary for Bath N° 3-N° 1 must be used
sparingly in this Bath and an immersion of 3 hours is enough-No more heat must
be used after the hot water cools-Care must be used in taking the article out of
this Bath then immerse in cold water a second (a dip) and thoroughly dry, brush
it carefully and burnish-the article is now ready for electro-gilding or plating.
Any convenient battery may be used such as a Bunsen's.
In the porous
cell 1%, dr: Nitric acid-in zinc cell 3 dr. 3 iii Sulphuric acid-Amalgamate the
zinc Suspend the article in Electro bath N° 1, ten minutes, dry, and return it for
half an hour or more as necessary when there will be a thin coating of Gold-
Electro baths Nos 2 and 3 can now be used to attain the necessary thickness of
Gold The greatest care and cleanliness must be used in all the working.
Aqua Regia to dissolve Gold-One of Nitric acid, two of Muriatic acid-Fine
Gold to be put in a Florence flask with Aqua Regia, apply gentle heat to accelerate
chemical action-when dissolved pour it in vessel with water, precipitate the Gold
by adding liquid Ammonia (sparingly) until no more precipitation takes place then
wash thoroughly all acids and ammonia from precipitation-when thoroughly done
the quantity must be as per solutions-add Cyanurum Potassii saturate the bath,
when ready for use if thought necessary strain,
Silver is dissolved by Nitric acid in Florence flask precipitated by common
salt-wash as above then add Cyanurum Potassii as in Gold.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles Grey Hammersley in the Great Seal Patent Office on the
23rd November 1883.
"A PROCESS
CHARLES GREY HAMMERSLEY of 106 Liverpool Road in the County of Middlesex
Telescope Manufacturer
FOR THE METALLIZING AND ELECTRO
GILDING OR PLATING OF NON-METALLIC SUBSTANCES SUCH AS VULCANITE,
CELLULOID AND THE LIKE, SPECIALLY ADAPTED FOR DENTAL PURPOSES
A communication to me from abroad by Frederick James Lynam of Santiago in
the Republic of Chili Doctor of Medicine
»
This invention has for its object a process for the metallizing and electro-gilding
or plating of non-metallic substances such as vulcanite, celluloid and the like and
specially adapted for dental purposes.
The plates are immersed in baths of which the following are the particulars:-
Bath N° 1.
Nitrate of silver (melted) more or less
Water distilled
Bath N° 2.
Acid Gallici
18 Grammes
200
"
20
33
500
"
N° 2 } (more or less according to size of article)
2
"
Water distilled
Bath N° 3
Solution N° 11
Do
Electric Bath N° 1
Aurum Chlorurum
Potassii Cyanurum
Water distilled
Electric Bath N° 2
Aurum Chlorurum
Potassii Cyanurum
Water distilled
Electric Bath N° 3
Argent Chlorurum
Potassii Cyanurum
(more or less)
50
4
4
15
1500
6
30
1000
"
"
"
"
"
"
"
6
"
30
"
1000
j
Water distilled
"
Immerse the article in Bath N° 1, 15 hours-take it out wipe and dry-immerse
in Bath N° 2, 30 minutes, wipe and dry it then return it to Bath N° 1 one hour-
dry it and return it to Bath N° 2, 15 minutes then return it again to Bath N° 1,
3 hours afterwards the article must be frequently immersed in Bath N° 1 and
dried till it assumes a steel color but must not exceed more than 15 minutes each
single immersion. After this place the article in a cup or basin in sufficient of
the solution of Bath N° 2 to cover it, then add N° 1 solution placing said cup or
basin in hot water as a slight heat is necessary for Bath No 3.-N° 1 must be
used sparingly in this Bath and an immersion of 3 hours is enough. No more heat
must be used after the hot water cools-Care must be used in taking the article
out of this Bath-then immerse in cold water a second (a dip) and thoroughly
dry, brush it carefully and burnish-the article is now ready for electro-gilding or
plating.
In the porous
Any convenient battery may be used such as a Bunsen's.
cell 1 dr. nitric acid-in zinc cell 3 dr. 3 iii sulphuric acid-amalgamate the zinc.-
Suspend the article in electro bath N° 1 ten minutes, dry, and return it for half an
hour or more as necessary when there will be a thin coating of gold. Electro baths

page_text: No 2 and 3 can now be used to attain the necessary thickness of gold. The
greatest care and cleanliness must be used in all the working.
Aqua regia to dissolve gold-one of nitric acid-two of muriatic acid. Fine
gold to be put in a Florence flask with Aqua regia, apply gentle heat to accelerate
chemical action-when dissolved pour it in vessel with water, precipitate the gold
by adding liquid ammonia (sparingly) until no more precipitation takes place then
wash thoroughly all acids and aminonia from precipitation-when thoroughly done
the quantity must be as per solutions-add cyanurum potassii saturate the bath,
when ready for use if thought necessary strain.
Silver is dissolved by nitric acid in Florence flask precipitated by common salt―
wash as above then add cyanurum potassii as in gold.
In. witness whereof I the said Charles Grey Hammersley have hereunto set
my hand and seal this Twenty first day of November in the year of our Lord One
thousand eight hundred and eighty three.