ぜんまい仕掛 しかけではありませんでした
zemmaishikakedewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of ぜんまい仕掛け

1. Was not spring-powered.; Was not wound up.; Was not mechanical.

Past/Perfective
Negative
Polite
Formal Register