Complex sentence: To aid in the construction it is claimed that Bodmer devised the "travelling crane"; the Egerton wheel became a tourist attraction during the 1830s and 1840s as it was one of the largest in the United Kingdom.
Split into simpler sentences: To aid in the construction it is claimed that Bodmer devised what became known as the "travelling crane". The Egerton wheel became a tourist attraction during the 1830s and 1840s as it was one of the largest in the United Kingdom.