The Jacket's tsutsugaki* images were closely connected to the fireman and his mission to extinguish fires. Every member of a single fire brigade had the same images on their jackets to manifest unity and camaraderie of their group.
Jacket's images: (compare discription below to the bottom-left number on the image)
A decorative ridge-end tile cap with the image of a Japanese oni (ogre or goblin) and often seen on Buddhist temples. It was placed prominently on the temple or house roof for the purpose of warding off and/or driving away evil spirits. We believe the kanji writing means "roof tile".
In Buddhist's literature the elephant is a symbol of physical and mental strength, as well as responsibility and heartiness. Beyond the religious symbolic meanings, the elephant possesses a long snout which spews water, perhaps a somewhat whimsical implication.
3. Roof ridge-end tile cap or kawara.
We believe the kanji writing means "rice field".
4 & 5. Both images are unknown items.
The kanji writing on # 5 means "new" we believe.
*tsutsugaki - free-hand paste-resist decorating method