I'm afraid we're living in a different time-zone Allan.

The era I'm talking about is the early 1950's.

"Slime", hadn't been invented, except in duck-ponds, and I'm not even sure about grass either.
If it had it would probably have been rationed anyway.

I though you would have known about the shoe-lace trick.

A tight knot with the lace either side of the hole in the inner-tube.
Tyre back on, inflate and off you go.

You may have to re-inflate a couple of times, but it was better than walking.
Surprisingly, you couldn't feel the gap, the tyre not only expanded width-ways, but also length-ways too.

The only way it wouldn't work, was if the puncture was too near the valve.