The sun. [volume] (New York [N.Y.]) 1833-1916, 1891-09-13
xorEs ON SCIENCE AND INDUSTRY

r,ence OF a German engineer, one NJ the most
satisfactory methods of treat ns wire ropes 10
iosure tn ir better preservation. Is to boil
~rapb 10 in .alow and n MY this bu,tcrlks
mixture either with a brush. or let the rops
RIM through a vessel OF trumret form, file,
with the grease. the fabrication to be rerea,ed
about every four weeks; this treatment ia
fund TO be a protection against rns'. prevent.
In, also abrasion when the rore comes in con.
tact with a,y hari bodies o. substance.
S S,ns Of he, severe! wires =, ,oiSs,a,er Or
s Snx even e'i into the smaest ;nis slices
{. ike hemp ropes; those OF wire ,anno! lie
but m ,S.s % ia r m sI Sy
an application Of 8 nd. linseel on miNei With
vegetable tar c 20 which rpdSres the eS ssst
and tear. In o,der to secure good condition
Sarn 81 MassT ls. 's:
siakei lime, anil from hity ~ sixty iitres OF
tar b. se 2u Sos ,q G sn se
n,ied hot. Gaita lied vine ropes are unis.
sirable as driving ropes. as the Yin coating 10
Svnrn oil in a short time. aud rust soon folluwA
| A thorough investigation is to be made in
England. under Government direction. Of tho
yariou. me hods OF illuminating lighthouses
| with a view to determine the best means Of
, improving the results. Among the mostr..
cant improvements In this line are two de-.
vices which have been exhibited DO orets
Ro1nl Society Dublin, for which great
, eff1cieucy 10 claimed. One Of these is bnrler
| nv means OF which gas made from ordinary
| cokipR coal eau be 40 enriched by hydrocar.
! bons and BY a supply Of heated air. as to pro.
! duce nm Illuminating power practically double
that Of the mos; uower1E% Sa nigh nov
Wee consists in an Improved ARRANGEMENT Of
diiiop,ric apparatus. by WHICH lenses Q, larger
| nj presen In vogue eau be employed In light.
! houses. with an enormous Increase In their
t burner was used in, connection with certain
arrsn.emen:s Of lon ocular apparstus. power
s soont s.o1o.oSS candles and Shicb. owing to
the eopos9n q the ess Snys sa nn ts great
most powerful sltcrlc light hitset !. O. iSs
est lighthouse flash now known.
| Anew cold saw for saving iron and steel hss
been invented known as the Potter saw. and
hns been introduced with great success IN
Pit sburGh. 1t is . circular saw OF nne STEEL
| tempered somewhat hard. and about one.
quarter nf an inch In thickness at the peri-
phery. and ground slightly thinner at Its centre
| to clear itself easier In . deep cut: 1t is made
to revolve at q slow sneed. while the old
| hot saw was run at a high rate. and did Ito
work by means OF the intense friction created
rather than teeth. SO that the new machine
cuts bu, one inch minnte 1t sso differs Ter
moves ur the saw. but the work is n1ed sta.
wi! We.e s" and screw Of some Iour o. me iess 4
sa hands, rev, gear or 81 seli acting ssss
The saw runs in a tank Of solution. the greatest
ii iha material in this, solution: it is com.
| posed OF ten pounds o. whale oil soap. TWO ga.
| ions OF lard nl. and fifteen pound Of sal soda
| VI a
Some OF the paper products from oat refuse.
according to the method pursued in Scotland.
nre hy no means deficient In tho qualities Of
strength and serviceableness that character
ize the product OF other materials used for this
purpose. The process consists in first i'm
mersing the oat husks In u tank OF water. in
/ order to Il. at of mustard and other seeds
with which they are frequently moro or less
mixed. and which. II not separated materially
d-te iorate the quality Of the paper: It is Of
ndvapas TO- to haze The wsss very thor.
! rati0n OF the foreign seeds. and al.
i.ws them TO float to The surface, Tho
ea a a" scu ' aud snv oatns ms,ter: are
drawn or " an oyertIpM pipe at tho top 81 i ths
Sf 'er @syS 81 water Is Wen
thv s,o water nine at the bottom 1s o 2, tho
htsIs. TIL. husks may be left to steep in tho
s M1sl ms tn by a soitenng ners to sen the
silica from the fibre and facilitates the suose'
quent boil nR process.
The result Of INVESTIGATIONS made bv Csrus
Wilson. and hy him lately published. on the
efTert OF mechanical stress on steel shows
that In the case OF uniform longitudinal strain
on steel bar. there is a strain OF moleeules
also OF the elements: and q production OF flow
by strain Of the elements Tho eloneation
H. a
observed. AMI this may be either recoverable
or otLerw. se again. the strain OF IN element
il male up OF a uniform diluton and uni.
{ RIM sheer about an axis parallel to hat Of the
bar. AMI. therefo,e 9. the how elnngat on consists
10 4. amount Of sliding. From tn. results q
all the exp.Iment TINS made: Therefore, !. Is Is
Atomic disturbances IN a bar. this increasing
regularly with the s,reas-ior small stresses
Ss ysd Gsy f.
~hoy 80: nm n"y the msEnst'o RLopsI RS from Ua
nre some stresses over which The T Is frnnd
tohaye the same magnetic properties. whether
One OF the most interesting practical inven'
tons lately nut upon tho market is from
knitting machine mandatory in Dresden
Germany. tho apparatus In some respects re'
sembling an ordinary knitting machine in its
make no. team DO readily employed "a such
bo b on round and fiat work. but is especially
adapted for varieRsted patterns In their ususl
diversity tits capable OF working varieEated
patterns cardigan stitch. purl cardigan two.
and-tw" rib and R!so emb dies tho pecu arIile;;
al StIiIing machiUe. producing IN one plrcrot
good singe. co!ored. striped. and ma y;co.
nred pat erns without changing the machine
ito I. by tn. simple placing Ia or ou' OF ths
hack thread In the slotted thread conductor, y
10 claimed amy desired number OF colois and
shades can h. pro iuced. tho eIfert being sncn
AS to give the impression that the patterns arc
The result OF embroidery.
The much-discussed phenomenon OF ocean
circulation or OCEAN currents may best b. con-
sidered says an English writer on the subject.
BY regarding the currents as merely one grand
system OF circulation. produced. not BY the
trade winds alone, but by the combined action
OF all The winds capable OF producing this ac-
ton. the effect upon tho currents depending
uron two circum stances. namely. tho direc'