New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1856-06-13

r.n,t;on. II inclined upward !. sets Ike Q top, sni
ris h.s itself very gradually mp until N some eases II
o.es "a hold on the support, and falling uPon the table
eounnspcs series Of :rcumgyri.ilus .sr more viSor
Gus than consistent with drawing room etiquette.
We sre not Awsre thsi any practical purpose has
VI been served or = likely 70 BE- by this inventon
II such it may be called; but in these days Of me-
chsrca ogr. ( i important 20 distinctly and cor
rectly ,ndDsate any new principles il 0yered We
have devoted some spare 10 BE subject, adoaSh far
too ltile to exhaust oil The points vi interest directly
connected th,reSith.
RAILROAD CAR SPRI>Gs-India rubber csne quite
rspid MO TEE for car sprngs ss ,ears ago. but
sylesrs 10 be going mo d..fayOr. Vegetable gam
i not the thing Il : too lively and ss9cci a car
shout too mu n; il = short Nved-becomns dead or
crushed down 70 AZ .ntls.;.c mass in little over
year j; i liable 10 accident from cracking bursting
oper and i freezes stiff when !; i needed most. when
the track rigd with frost, and when the rails, wheels
and sxl.s brittle pipe stems The single elliptic
spring, steadily used in EnglAnd, and the double clip
TIC frequently used in own country, are free from
mos, of these objections, but more expensive, and
occupy spsce, "a they require 20 be of consider
able length. The friction Of the plates OF steel upon
each other prevents the occurrence of the repeated
boundiugs observed with the gummy supports, and.
although slightly suffer and britter in severe cold
weather the ference in this respect Is co, practically
sppr.ciable The volute spring recently patented and
introduced by Mr.. Fowler n. Ray Of this city, APP
pear 70 combine all the qualities desired in very
h gh degrte-beng stout steel ribbon cooled up into
a. compact form as rubber spring, and possessing
the fctional qualities desired in the very best degree.
The pressure upon the center of the COIL and
tends TO push it thrpugh-an action which not only
brings INTO pay to proper degree all the elasticity OF
the metal but, by happy coincidence, tends TO bind
the coil. of ST. Il together that the friction increases
with the load. This scton, also by constantly tend
pg 10 coil the steel tighter when the strain Is applied
hunors the nature of the metal, which, having its
particles compressed, upset, on the inner side OF
each coil in the act OF manufacturing the spring would
be broken by any force tending to strengthen the
same. Mr.. Ray has expended some SO COO IN expert
meuting on this subject, ana in constructing machines
for the manufac; ure which is conducted in conve-
nient establishment in Thirty6rst street. Rays
volue springs are made in several styles for different
purpose and in use TO considerable extent.
form of volute spring has also been used 10 limited
extent for some time in Great Britain; but the
American form il understood 10 be far superor-In the
form # the rbbon, which is swelled in the middle
instead Of fiat, before winding up, and in the pro-
vision for equazing its action by allowing i. partial
support under ts base as the load mere .sed so tn,
it, ac,ion is pretty sesrly the same under all loads
AsrRIc,s STEEL-Uuless we are greatly msin-
formed the difficulties under which the manufa Nure
of steel labos in country arises entirely from the
sn all scale on which il has so sr been conducted.
The Engli.h steel works although we believe, pos
ses.ing TO a great extent monopoly OF the famous
Dapamora Iron. are able 10 command the market only
by the SUPER u uniformity Of the product, and not by
any actual superiority in the metal when properly car
Dol ed In the ast steel for example, each bar IA
broken and mixed in England rapidly assorted into
several varieties, some of which finally made into
different qualities Of steel or il not, are compelled to
undergo some what different processes in the manuac
ture The American Works, the contrary, too often
adopt the temporary system OF waiting for an order
and then caIbonizpg well as may be and mixing all
togetber-a proc which cannot produce "a uniform
results Different bars Of iron even from the same
bloom will become steelited in different degrees but II
| i. easy TO see that all the lack of uniformity eve
c. argsd upon the American article springs drectl,
from the moderate scale on which the business u con
Quoted and thus again from feeling of insecurity anc
uncertainty in the protection American steel mskcr
can never feel certain that few months will not spring
! upoI them some such new tariff Senator James is
1
doubt that We have the materials and the skill, set
tied feeling tdat the duties on iron and stee not to
be meddled with, giant establishments may be ex-
pe:ted gradually to develop themselves, which would
soon put the business beyond the fear Of foreign com
petition.
srR.rsIsG OF SHIPS IN LAUscHSG AID DocgIyG.
Mr. Steer Justly considered the most eminent ship
builder of our ow1 or any other times contends that it
and hogr ~
supporting them too eIclusivey by their keels 10 dock
ipg. The is nearly as bad in launching, the oge
ysy. being so near the keel on each de that the whole
weight Of the vessel is supported on narrow ltne
He contends that much of the distortion observed in
vessel. Oh ort time service il due to the strains re-
oeived in this manner before their completion. The
steam-fgste Niagara has been built without much re-
gard to the old rules OF the naval constructors and
lighter timbered but heavier fastened than ordinary
war vessels Of her size, and to avoid the evil alluded
t. she vas strongly treed on the nside to support the
bge Def r. launching. The same bracing which con-
si.ted Of strong cha from the bige passing over
tall stiff framework erected upon the kee!sons, re-
NAMED in the ship during her docking, and the result
Is that the hull is not bent more than inch in any
direction from her forIn as nodded.
SAFETY ATTACHMENT TO CITY CARs.-sn. Charles
MGbOn Of ashlnStOn, ~ u, eAh'DiVedn 'uo h'''
Houre terminus of the Third Avenue Railroad 90
NJ nday last device for removing obstru;tions kom
befre the whee and thus to prevent the possibility
Of crushing any unfortunate chAd or adult who may
fall in dangerous poetion benes.h the car. 1t con-
rists ef plow-hke attachment on each brake which,
BY the aid Of point tray cling in the groove OF the rail-
and provided with two small wheels one placed hori.
zoLtaiy snd one vertically to diminish the fnc,on,
throws out with Kind Of plow Ike action every OBJ
,sce Of whatever nature In the nalre'erred to the
eHsy e man Wa made up If heavy material % a.
] i 4 .f.ltiu EraLQx