Glossary entry (derived from question below)
May 23, 2018 09:35
6 yrs ago
Norwegian term
Norway
Fast, accurate & efficient translations
Native in: English (Variants: UK, US) 
Works in: Norwegian to English, Swedish to English, Danish to English, and 2 more.
jomfru
Norwegian to English
Tech/Engineering
Construction / Civil Engineering
pile-driving, piles
Ved bruk av jomfru uten strekkfast forbindelse til pelen kan fallhøyden økes med 15 %
specialist pile driver machine.
I found only one reference to a "rammer".
(It sounds kind of illogical that a jomfru would be the rammer, if you see what I mean...
specialist pile driver machine.
I found only one reference to a "rammer".
(It sounds kind of illogical that a jomfru would be the rammer, if you see what I mean...
Proposed translations
(English)
| 3 +1 | rammer |
MechthildOpp
|
Proposed translations
+1
9 hrs
MechthildOpp
Norway
Norway
Works in field
Norway
Native in: German 
Works in: German to Norwegian (Bokmal), English to Norwegian (Bokmal), Norwegian to German, and 1 more.
Related KudoZ points
:
5
Selected
rammer
Here you see a tool that is called both "jomfru" and "stamper": https://www.finn.no/bap/webstore/ad.html?finnkode=105778616
Or see this Wikipedia article on Jomfru that also names "Stamperedskap til bruk f.eks. ved brolegging" https://no.wikipedia.org/wiki/Jomfru
Or see this Wikipedia article on Jomfru that also names "Stamperedskap til bruk f.eks. ved brolegging" https://no.wikipedia.org/wiki/Jomfru
Reference:
1 KudoZ points awarded for this answer.
Comment: "not proven"
Discussion
I think the name comes from the triangular shape, see the wikipedia link.
The oldest (even Roman) pile drivers had that same shape!