Down a punch-card rabbit hole today: not much info about this, but appears to be a Japanese-made toy loom that uses punch-cards to program patterns.
The menkiri bocho, also known as the udon kiri, is a knife for slicing handmade noodles – note the inset and the sharpened front edge. Simply squishing the blade down will not make proper noodles, so the very sharp knife is drawn across to ensure a clean cut.
Via: Serious Eats
“Asagao Montagari; 5 Hen; Gekan Kyozan Rojin Saku; Kunisada Ga” by Rojin Kyosan, published in 1853.