The morning call. [volume] (San Francisco [Calif.]) 1878-1895, 1893-02-24

heavy consumption of water, also the new
lake into which the cataract falls will re-
quire a large additional amount, and 10
these will be added vast area Of lawns,
flowers and foliage that REQUIRE constant
moisture TO keep them fresh and green, so
that the supply Of water. constant and OF
great magnitude was a first consideration.
The old pumps even when in constant
operation can supply but 100000 gallons,
while the new pumps can furnish mini
mum of 1850, 900 gallons per day. and when
driven to their full capacity can furnish
100000 gallons. Enough water is thus
provided fof every requirement Of the park
when the improved part of its area is ex-
tended as far west as Strawberry Hill.
The water supply of the park is derived
from eight artesian wel!s.,the majority being
20 inches in diameter and 100 feet IN depth.
One of these wells is no less than 5h feet In
diameter and $50 feet deep into which an
extension has been sunk 80 feet deep and 20
inches in diameter. OF these wells five are
new, and three are those from which the
present supply is derived. They will furnish
more than the quantity that will be re-
CURED, and the quality is said to be extra
ordinarily good.
The works are 215 feet above high tide,
and the water will be pumped to a reservoir
on Strawberry Hill, at an elevation suffi-
GENTLY great to allow the water TO be dis
tributed by gravity over the entire surface
Of the park.
The foundation of the new pumping
works Will be laid just little to the north
OF the present building. and this excavation
is about completed. The building will he
100 by 40 feet, surmounted by a chimney 80
feet high. he design Is ornamental, and
when completed the building will be an at
traetive addition to the park. 1t is 10 be
constructed of selected brick in two shades,
laid in col0red mortar
The chimney is to be also OF brick.
of shapey design, and embellished with
brick Of a lighter shade. Great care has
been taken even 10 the designation Of the
mortar to he used 90 as TO secure greater
strength to the structure. The roof of the
works is to be tile covered, and the girders
to support it are to be Of carefully selected
Oregon pine. The interior is to be care
| fully oiled and vanished. The structure
will cost about $1,000
1t is upon the engines. however, that the
| principal expenditure of the whole extern
! sion has been made, and 1t is upon these
that the Union Iron Works has exercised
| its utmost skill and technical accomplish
| ments. There are TWO independent sets of
| pumping engines OF the horizontal COM
| pound type. the pumps being driven direct
| and attached TO the back ends of the piston
| rods. The high pressure cylinders are II
! inches in diameter and the low pressure
! cylinders are 20 inches in diameter and "a
! inch stroke. The pumps are of the double
| pluuger type, 5s4 inches in diameter and "a
| lnCn stroke i ne NalHe seals are maze oil
! phosphor bronze, with hard rubber valves
! incased in a cast-ir0n body with side doors.
| 81 that the valves can he easily examined
| and repairs expedited. The air chambers
| On the suction pines are Il inches in dame
| ter and feet inches high. and the dis
| charge pipes are also II inches in diameter
! and feet high.
! Each set Of pumps has its own air pumps
! and condenser worked from the cross head
/ of the main engines. These are vertical OF
| cast iron and lined with phosphor bronze.
! The main engine frames are of cast iron OF
! the CoTlss type with adjustable bearings.
| The pumps and engines are securely tied
! together by cast-irOn bed plate running
the entire length of both. TIE engines
| have net capacity of seventy hOTse-pO
! and being independent an accident may
| occur TO one without interfering with the
! operation of the other. The designs of the
! engines and pumps were submitted 10 Her
| mann Sehussler. engineer OF the Spring
! Valley Water Works, and pronounced by
| him 10 be absolutely perfect"
The boilers are two in number, 81 Inches
| In ameter and 16 feet long, and are known
as the elephant type, to work under
! pressure of 100 pounds per square iuch.
| Each. boiler Will have two water-drums 81
| inches in diameter and y feet long and
| sieamdrum 30 inches in diameter and 10 feet
| long The fire fronts OF the boilers are of
| castiron OF highly ornamental design, with
| the names of the makers and those of the
| Park Commissioners impressed upon them.
| The boilers rest upon n concrete foundation
| of massive strength aud endurance. The
whole cost of the new works will be
upward Of $4,000.