An animal trap device designed by J.A. Williams in 1882 to kill vermin. Food bait is placed onto a spring-loaded lever. When the animal presses onto the bait, it fires the loaded pistol.

1882年由 J.A. Williams 设计的用来杀死害虫的动物诱捕装置。诱饵放在用弹簧顶住的控制杆上，当动物压在诱饵上，事先装好子弹的手枪将会开火。

Artwork of an initiation device by Ulysses DeMoulin. The device allows a person to sit on the back of a model goat and experience unpredictable movements. The goat is attached to a tricycle base and gears provide the eccentricity of movements. 'Riding the goat' was an initiation prank practiced by societies in such as fraternity houses and Freemason groups

一个由Ulysses DeMoulin设计的启动装置。这个装置可以让人骑在山羊模型的背上，体验出乎寻常的运动。山羊模型安装在三轮车底座和系列传动装置上，依次提供不规则的运动。"骑山羊"是一些学会的入会惯例恶作剧，比如兄弟会、共济会。

Artwork of a device designed by Jonas E. Heyser 1910 to prevent mental health patients from, well, I think we can all guess what they were trying to prevent....