Well, isn’t this some clever shit? Browsing Reddit, I came across a post where someone was wondering what this device mounted to his downtube was. Someone came to the rescue with this from Wikipedia:
While not strictly a kickstand, the Flickstand is a small bracket that flips down from the down tube and engages the front tire to prevent the front end from steering and tire from rotating, and thus enabling the bike to be safely leaned against an object without danger of the front end turning and the bike subsequently falling to the ground. These were made by Rhode Gear Company in the 1970′s and 1980′s. While the Flickstand is no longer made, a Velcro strap can be employed for similar success by strapping a brake lever to lock the brake or strap the front wheel to the down tube.
(photo credit to roburrito at Reddit)
I thought I’d seen it all, but this is definitely new to me, and I don’t appear to be the only one. Why this ingenious little device was common on older bikes, yet they are all but unheard of today, is beyond me.