The evening telegraph. [volume] (Philadelphia [Pa.]) 1864-1918, 1869-11-12


the dry-rot Of the other. The pavement is said TO
Californian invention, where it has been tried with
considerable success. In san Francisco where the
pavement mas neen IN use for three or four years,
the past Two years have been of the Stow Founda-
tlon. After this pavement is laid, the contractors
offer to keep IL in perfect order os twenty years. for
the sum OF one and half cents per square foot per
annum, and will make suniciont deposit with the
such contract for the time specified.
The Miller Wood Pavement,
owned by the Philadelphia Wood Paving Company,
is late patent, also advance the original plan
Of the Nicoson. floor orsubsructure is used in this
form OF pavement The nOOr Is composed Of one
and half inch spruce boards. In place OF coating
them with asphatum end tar, they are treated I'm
certain manner and become what is called "Burnet-
placed in vacuum tube, then solution OF chloride
of zinc is forced into the pores by pressure equal
when laid is placed a layer of upright Pine blocks,
with the end Of the grain on top, OF wedge-like
shape. No strips separate the different rO Rs OF
blocks one from the other. 1t has been said, with
what truth we know not that the strips forming the
bottom OF the grooves in the NcolsOn become loose
from wear and work up TO the surface, dispacing
thc gravel filling, and leaving The blocks without
support beneath. 1t is to remedy this evil that this
new form of block has been devised The block being
Wedge-shaped or slantng on the sides which face up
ana down the street, the broad end being on the OOr
at the bottom and joining the next row of blocks
and the small end being on top, u wedgc-snaped
cavity is formed between the rows. The top of the
cavity II ABOUT the width OF the groove In the Nico
son, and the bottom tapers of to q point The
smaller or upper face of the block is about three
inches thick, ana the lower face about four inchcs
SO that the measure of the slant on each side Is
about half inch The strip to form the grooves is
thus dispensed with. Ihe grooves are filled in and
the top Is covered with mixture of tar, pitch roof
ing gravel, and paving cement This last is patent
article The cavity being wedge-shaped, and the
top Of the wedge being towards the top it follows
tat the harder the pressure on the substance from
ment become, which it is supposed to do the more
1t is used. The blocks Of the superstructure are
not 'burnetlzed," like the floor, but only coated
Va
the idea of this difference is that kind Of protec
ton is better able to guard against the causes of
other is more adapted for the upper. This pave
ment has been used in Brooklyn, and in some few
places in small patches in Philadelphia It is to be
tried on Spring Garden street, from Twelfth to
Broad, ana by private agreement Of the properly property
holders, on Green street, from Fifteenth to twenty
hfth The patent IS only one year od, Dut IL mus nus
been very favorably received In that time. inc @
Mer ee all iooS alike on the upper surface when
finished. They all have a three-lhch Width OF Dioch
running across the street narrow or
coating. The interior structure OF tne groove IS dl-
ferent IN all three cases Ihe noOr IL VI LII Gheiei,S
design in two, and is entirely dispensed with IN
third
This is another class, using entirely dherent ma
terial in construction. The aim mere is TO produce
something cheaper than wood or stone ana yet an
swerng in other respects as well.
The Concrete
is one of this class 1t is composed OF coal-tar,
pitch, and gravel. A foundation Of sand or gravel
is prepared-in some in this city the cobble-
stones were used as the foundation--the materials
are mixed together and poured hot upon the sur
face, leveled and allowed TO cool. The pavement,
when in good ORDER is very good for driving, but
from our experience with it thus far cheapless ap-
| pears to be its only other recommendation. In hot
| weather the mass grows soft and sticky. In rainy
! weather some OF the ingredients are affected and
| washed away, leaving others to crumble and ne
ground into powder and mud. A patch was laid
not very long ago on Vine street, between Front
and Second. Councils have lately ordered il to be
removed. From the little which can be seen be-
tween the great deposits of mud upon the street,
should say that Councils took unnecessary trouble
It is fast removing itself There is no necessity to
pay extra men TO take it away II the street.
cleaners attention were called TO the spot, we
doubt not that the whole thing would be swept away
| with the mud and no one would be the wiser. Let
| the distinguished congressman who put in down
change their business and become street-sweepers.
Fifth avenue, New ! ork as well as some other
parts of that city, has had taste OF this kind OF
! pavement, with the most disastrous results. Their
specimen cost more than ours and did not last as
long. There are many varieties of this pavement,
Ingredients in the same or in different proportions
The trouble with them that they all more or less
affected by the action of water
That this pavement has failed so Signally in these
cases is no proof that it cannot be made more
durable. The streets OF Paris are coated with a
pavement OF this class, ana they are renowned for
their strength and beauty. Experts say that the
only difference between the Partisan pavements and
ours is in the manner OF laying.
The Vulcanite.
This is patent composition The great care OF
the inventors in this has been to produce sub
stance which Will resist the action OF water Pieces
of it have been experimental with, and boiled for
several hours in water without being affected. 1t is
said to be Of the nature of stone hard and unyeld-
ing, but II so, why Is 1t not open to the obiec-
tons that material? Its compOnents are pitch,
gravel and coatar, like the concrete with the addi
ton OF sulphur Its name is derived from process
in its manufacture analogous to the yulcanizing of
ndia-rubber. This is Philadelphia invention and
is not year old. We are to have trial of it on
Vine street, above Second, for the distance of half
square, and also on the main street of Manayunk,
perhaps. The company is at present engaged iii
laying footpaths of this material in FaTmOunt Park.
portion of the west side OF the river has been
given them for trial. where o steep grade makes q
pretty good course OF the paths in wet weather
well satisfied with the working OF the pavement for
the purpose OF foot-paths.
The Cost.
or all pavements our cobbe-stones are the
cheapest The stones abound in great quantities on
| the banks of the Delaware, between BordentOwn
and Trenton, from whence they were allowed TO be
| gathered from below the lOw-water mark. They
can be had for the cost of gathering and TRANSPORT
| ing. Quite large business was formerly done by
men owning boats, in gathering them for the market
| The cost Of cObble-stOne paving, after the stones
| have been gathered, shipped, unloaded carted and
laid, is only 81 25 per square yard. The cost of the
Belgian OF cubCa stone pavement Is from So to 1915
| per square yard. The improved Granite Broadway
! New YORK pavement, a species OF Belgian, costs
| $3.50. The Nicolson costs about 81; other wood
| payements about the same The cost is the
| great drawback TO these III they could be laid as
cheaply they would very soon come into general use
for to say the least they viii last and remain in good
order as long as the cobbe-stone and the advantage
OF the smoother pavement is self-evident The Con-
! crete can be laid for about S2 IL costs the New
Workers So. The Vulcante is about the same as the
| Concrete.
What Do Councils Intends
II is pretty certain that no cobblestOnes will
be lald at least for awhile. Should contractor
get into power whose hobby is cObble-stones we
should prObaoly be again alicted with news of ap-
propriatons for that object Public opinion is pretty
strong in denunciation at present. But what do
Councils intend to do now Are our thoroughfares
always to be the experimenting ground? Arc we 10
| ph fau