#365daysofbiking Nicely dovetailing

November 24th – On the way back from Chasewater to Brownhills on yet another dull, wet Sunday afternoon following a frankly disappointing winter fair at Chasewater, I wasn’t expecting to find much: But I found something fascinating that’s been staring me in the face for decades and I have never once noticed.

It’s fairly well known that when Abraham Darby bullt the Iron Bridge over the Severn at Coalbrookdale, iron was such a new material that many of the jointing techniques used were adapted from carpentery, as that was the understood skillset of the day.

I noticed for the first time today that the Ogley foorbridge over the cut off stub of the Lichfield branch of the Wyrley and Essington canal – recently refurbished – holds it’s guard sides together with a neat, well fitted dovetail joint in cast iron.

The bridge, dating from around 1850 is a listed structure, and I’m beginning to see why. The rails are constructed in two half-crescents with a dovetail centrally, held rigid by a bolted mating sleeve.

It’s utterly beautiful and means the bridge is thoroughly rigid.

I only noticed due to the rust bleed into the ageing paint.

You can always find something, no matter how grim the weather…

This journal is moving home. Find out more by clicking here

from Tumblr https://ift.tt/2q6fqtD

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.