British Indestructo Glass
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kensk77
- Basic 850
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British Indestructo Glass
My car has a mix of Indestructo and Triplex glass on the side windows. I know how to date the Triplex glass but can't find anything on Indestructo. I don't see anything in the etching that would indicate a date.
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Brian
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iain1967s
- 1275 Cooper S
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Re: British Indestructo Glass
“IT” = 3rd quarter, decade year 2
So July to Sept 1962
https://books.google.com/books?id=tM_kUKX24XMC&pg=PA120
So July to Sept 1962
https://books.google.com/books?id=tM_kUKX24XMC&pg=PA120
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kensk77
- Basic 850
- Posts: 50
- Joined: Thu Nov 17, 2011 7:26 pm
- Location: Ontario, Canada
Re: British Indestructo Glass
thank you, I found this in the 1959 Mini Register subsequent to my post...
The image on the left represents the Triplex glass which is coded the 2nd quarter 1959.
The image on the right represents the Indestructo glass which is coded the 2nd quarter 1960. Taken from John Parnell’s “Original Mini Cooper and Cooper S”
On UK built 59′s there were two makes of glass used, Indestructo and Triplex.
With Indestructo the manufacturers name is in an arch with two letters under each leg of the name. The First two letter on the left side are the ones we use for dating for example RU. The first letter “R” is used for the quarter of the year based on BRIT so R = 2nd quarter.
The second letter U is for the year based on the word “INDESTRUCTO” as follows I=7, N=8, D=9, E=0, S=1, T=2, R=3,U=4, C=5, O=6, some of the letter were ignored. RU is 2nd quarter of 64 (can only be a year of Mini production) 1959 dates would be BD, RD, ID or TD
Triplex dates are taken from dots above or below words in the company motif.
The year is shown by a dot under a letters of the words “Laminated” for windscreens or more commonly “Toughened”. A dot under the first letter of either word represents a year ending in a 1 so 61 or 71. Under the second letter is for a year ending 2 so 62 or 72 etc etc
For 1959 dated glass we’re looking for a dot under D for 9 or 59 in our case.
The quarter is dated using T, R, E and X of the word TRIPLEX with the quarters running consecutively T=1st.
The image on the left represents the Triplex glass which is coded the 2nd quarter 1959.
The image on the right represents the Indestructo glass which is coded the 2nd quarter 1960. Taken from John Parnell’s “Original Mini Cooper and Cooper S”
On UK built 59′s there were two makes of glass used, Indestructo and Triplex.
With Indestructo the manufacturers name is in an arch with two letters under each leg of the name. The First two letter on the left side are the ones we use for dating for example RU. The first letter “R” is used for the quarter of the year based on BRIT so R = 2nd quarter.
The second letter U is for the year based on the word “INDESTRUCTO” as follows I=7, N=8, D=9, E=0, S=1, T=2, R=3,U=4, C=5, O=6, some of the letter were ignored. RU is 2nd quarter of 64 (can only be a year of Mini production) 1959 dates would be BD, RD, ID or TD
Triplex dates are taken from dots above or below words in the company motif.
The year is shown by a dot under a letters of the words “Laminated” for windscreens or more commonly “Toughened”. A dot under the first letter of either word represents a year ending in a 1 so 61 or 71. Under the second letter is for a year ending 2 so 62 or 72 etc etc
For 1959 dated glass we’re looking for a dot under D for 9 or 59 in our case.
The quarter is dated using T, R, E and X of the word TRIPLEX with the quarters running consecutively T=1st.
Brian