Reference
LHE253
Title
Letter:
Date free text
10 Dec 1858
Production date
From: 1858 To: 1858
Scope and Content
From Easton, Amos & Jones of Grove, Southwark, S.E, to Fredeick Brown, Brache Mill, Luton.With fall of 11 ft, 52 cubic feet of
water per minute are equal to 1.08 horsepower in gross loss in nett horsepower : 1 horse power ( fraction of wheel in motion)
can it calculate what loss would be on quantity of spring water running through a notch 43/10 ins deep by 18 inches wide is not less than 67 cubic ft per minute. Charge 2 guineas on dorse detailed calculations to make £280 per annual loss.Marked Red No 8 on dorse
Level of description
item