ган 
PATENT SELF-ACTING HYDRAULIC RAMS 
Application of BLAKE’S Patent HYDRAULIC RAM, 
Foreing Water to suburban district at a higher level than the town’s reservoir, the waste water from the Ram 
eing used in the lower parts of the town. 
VILLAGE WATER SUPPLY. 
From J. B. McCALLUM, ы. C.E., Borough and Water Engineer, Blackburn, November 1, 1886. 
Guide (Borough of Blackburn) Water Supply :— 
DEAR SrR,—Following is the short report I promised to send as to the work performed From a test I made on September 29, I found that two rams with inch and j-inch strokes 
by the ridi Rams supplied by ie tothe Blackburn Corporation, after they had been in respectiv vk supplied with 194,030 gallons per day, together pumped 26,090 gallons per r day toe 
operation sufficient time to take observations. eight of 170 feet, giving 71:43 per cent. of efficiency, and one ram working at ğ-inch stroke, 
he di of Guide (popula. about 500), in the Borough of Blackburn, is situated ^ and with only 16 feet of working fall supplied with 154,587 gallons per day, P 
above the highest reservoir of the Blackburn Waterworks, and had no regular water s pac 10,587 gallons per day to the same height, nt 12:15 per cent. of efficiency. ‘ Р 
until last July, when the Water Committee caused two of your Patent Hydraulic Rams to be At а subsequent test on October 11, one г = -inch er" and having 31 feet 9 inches о 
pnt dote, and worked by water from a reservoir having a varying but maximum wie of working fall supplied with 121,083 gall day, pumped 17,583 gallons s per day to an eleva vation 
34 th ‚ the waste (clean) water gravitating to a lower adjacent reservoir. of pde feet. The efficiency in this case bein 9'57 per ат m 
элер — to supply rams which would force 8000 gallons per day each through In ing at these results the rim care was taken to positively measure the wa 
1295 y y pipe to a service tank n feet above the rams, and I am bound to state besides tation a meter check on feed and delivery pipe: 
that the result has considerably exceeded my expectations, as the rams are capable of pumping, The work carried out by you at Blackburn is аманы and satisfactory in ү 
and have pumped, much more water than you promised. The percentage of efficiency exceeds way, and if any engineer wishes to make his own observations he is at liberty to com 
all I expected, and is, in my opinion, much more than is usually obtained from hydraulic rams. here and do so 
From Mr. HENRY ROBINSON, Engineer to the Stockport District Waterworks Company, eni 8, 1883 :— 
used y 
R SIR,—I c report well of the two Hydraulic Rams we have fixed to your 50 тер! is not the = =: their power, whilst th water e — 
ende for the Eid of Disley Village; 40,000 gallons per day was the quantity you them is not equal to half sen = in hd ue igi by which ‘they ar fed, а 
promised they would force to a height of 68 feet, but on testing them Iam convinced that inclined to the belief pem 
JOHN BLAKE, ENGINEER, ACCRINGTON, LANCASHIRE, _ 
Editorial Communications should be addressed to “ The Editor ess Letters to “The Publisher,” at the Office, 41, Wellington Street, Covent Garden, Lo ا‎ 
Printed by WILLIAM RICHARDS, at the Office of Messrs. cre Ben лахт & F^ Lombard § Street, Precinct of Whitefriars, City of ot Londen, in the ae of Middlesex, and pu shed bY 
ssid WILLIAM RICHARDS, at the Office, 41, Wellington Street, Parish of St. Paul's, Covent Garden, in the said County._SATURDAY, 1,1887. Agent for Manchester—JOEN 
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