Music Trade Review

THE
4, 1923
... \ t'GUST
MUSIC
TRADE
REVIEW
47
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PROCESS OF PREPARING CASEIN FOR COMMERCIAL GLUES
TO STANDARDIZE WOOL GRADES
Impossible to Prepare a Uniform Casein Glue Unless That Product Is Prepared Especially for
Agricultu r al Department Expert Goes Abroad
to Investigate Foreign Grading Systems
Such Purpose-The American Product Superior in Quality to That Imported
~ ,
.\n
int e restin g description o f proce<;s es,
wherehy casein is pr e par e d for lise a s C01l11l1cr ·
cia l g lues, is given by Lawr ence Ot tin ge r, wr it ­
in g in Veneers.
Case in is the so lid pa rt of sk illllllilk. I t i~
diffi cult to tntee t he verv ea rli es t s tages of c ivi­
li za ti on in w hi c h ca sein was first use d , but many
very early ref ere nce s indi cate that the adhesive
p ropert ies of the case in co n tained in milk were
lI ~e d-if not in a form s uc h as we know th e lll ,
ill some other forn1. T h e;'e are ce rtain very
ea rly referenc es o n 111 en din g c hin a a nd ;; irnilar
a rti cles-tyin g thell1 to gethe r a nd bo ilin g them
in milk and thi s is but a noth er m a nn e r of
emp lo y in g the adhesive' quality of case in. 'rhe
o nl y so ur ce of casein is milk. It is the p rincipal
p r otein of milk.
Skimmi lk co nt ains approxi­
lll a t ely 3 per ce nt of casein, b y we ig ht.
T h e drying of milk generally n o t o nl y makes
it s s tora ge eas ier, but e limin a t es th e necess it y of
t r a n s porting a large bu lk of u se less wate r. In
t h e ma nu facture of casei n prac ti cally any acid
introduced into skilllmilk will prec ip it ate ca sein,
but the ac iel u sed and th e manner o f it s use is
one o f the factor s wlt ic h dete r mines the ulti­
mate qua lity.
Th e ac id s gene ra il) u ,c(l ;". (.
s ul p huri c, llluriati c, r e nn e t o r Ii\c tic. When the
latte r is u se d case in is some tim es r eferred to
a s " se lf- so ur ed." The skimm ilk u sed in pro­
du c in g ci\sein s hould be as free fron1 butler
[at as possible. The presence of fat w ill pro­
duce a case in undesirabk for any p urpo se.
Fres h s kimlllilk s hould b e u sed . Thc prorer
amount of dilu ted aci d is added to the s kim­
milk after it is h ea tcd to abo ut 120 degrees
Fahrenheit, Th e milk is p laced in a la rge ope n
vat and is stirred s lowly, u nt il th e clird se pi\­
rat es fr om the whey. It is from th e whey that
t h e s u ga r of milk and mi lk a lbu men a rc ob­
t ained . In the pr ocess of ma nufac ture the dr y
c urd is washed to r em ove as much of the acid
as poss ible.
Th e pre cip ita ti on of the case in fro m s kim­
milk b y th e lactic-acid process, which p rocess
is a lso known as self-sou r ed, ca ll s for the n atu­
ral coagulation of th e sk immi lk b y th e fo rma­
tion of the lactic acid, usually by th e adding
to th e sk iml11ilk of a starter of so ur w h cy and
ke ep in g the sk imlllil k at th e proper telllp e ra ­
tur e to b rin g about co mplet e coagulatioll. Afte r
~
The man who uses Behlen's Varnish
Crack Eradicator can afford to figure
lower. yet makes more profit on a re­
finishing job, than the man who does
not use it.
The reason-he saves the time, trouble
and expense of scraping off the old var­
nish and shellac and the finished job is
just as satisfactory toc:r--if not more so.
th e se pal'ation is cO lllpl e t e and th e w h ey is
dr;t w n 01'(, th e wct c urd is pre sse d, th e n put
through th c curd g rind c r to di s in teg ra te the
(' urd for proper spreading on the drying tray s
and trays arc run thr o u gh a dry-ki ln cons tru cted
a lon g the lin es of th e old -fas hi o ned ve necr
tr ays, b e in g a tunnel-lik e arrange m e nt with a
fo rced draft. The mat e ri a l then comes out as
ungro und casein an d is run thr ough gr ind ers
to br in g it down to the desired mesh. Me s h
of 50 o r 60 is preferr ed fo r th e hi g h-c lass case in
g lu es, . a lt h o u g h sO llle manufac tur e r s use a
('oa rs (' r case in, 'w lli c h is somewhat less expe n­
s ive to manuf ac tur e. The co lor of case in Inay
range from a n ;tlmosl pur e w hit e to a dark
brown a nd , o: cepting whe re th e co lor fllllS to
a vcry dark brow n, color is nO indiration of
Cjll a lit y.
W hil e th e process a b ove outl in ed see m s, and
is, co mpa ratively silllp le, yet th cre is nl o re to
the ma nufact ur e of a unifo rml y desirab le case in
for glue purpo scs than the "bo\'e d e s c rip tion
would indicate, fo r ther e is !11uch in vo lved c h elll­
iolr y connecte d with th e matter, a diSC'ussion
of w hi c h the sp;;cc perlllitted h e re wo uld n ot
wa rrant. It may be sa id ge n e rall y, h oweve r,
th at it j, p ra cli c;; ll y illl po,s iillc l O produce a
uniform case in g lu e unle ss the case in is man U­
fa ctur ed for the purpose. Casei n inlp o rt ed frOllt
t h e A r ge n ti ne is ll s uall y of goo d qua lity, b ut
good q ua lity do es not necessari ly mea n Iha t it
is a goo d casein for the m a nufa cture of case in
g lu e. ("ase in is Illanuf of th e world, lar1':e quantities co min g frOll1 Sout ll
'\merica, but case in is a lso manufact ur ed in this
country to a la r ge exte nt. The q ua lit y of casein
produ ce d in th e U nited Sta t es is not on ly equa l
to, but in man y ca ses supe ri or to, th a t pro­
du ced in any co untry in th e wor ld .
WIRE AND PIG IRON MARKETS
Former Proving Most Active of F inished Line s
-Curtailment in Pig Demand
l'lTTSIlUnr; cl, P A. , Jul y 30... - Wire products we re
t il e most active of all th e finished lil Ies o f s teel
in Piti s burgh tra ding la st week. Th e s t ee l wire
Illill s a re not able to operate Illu ch better t ha n
70 p e r ce n t a nd with th e ca pa c ity oo ld up for
from two t o t hr ee l1l0nth s it is thou g ht that
at leaq ilnoth e r s i ~ t y day s w ill e lapse before
n ew orders will be ta ken b y th e lea din g wire
mills.
l ' rodu c t io n of pi g ir on co ntinu es to be c ur ­
taikd. ,\s a n exalllple of w h a t i ~ go in g o n,
fo ur fu rnaces in th e sO llth ern O hio distrirt han'
been blown out o r bankE'd during- t he p ast two
d ays , wit h at least two more preparing to fo li o,,'
s uit \'("1'\' , h o rll y.
Consult the Universal Want Directory of
The Review. In it advertisements are inserted
free of cha r ge for men who desire positions.
r1i
THE
Send for a sample can to-day and try
iL
AR.T NO\?ELTVCO.
C.cl~i~ manufadu",,'/'
Pia1\.o BeJ:\.ches
a1\d Musie eabinets
llIriteforcalalog CL11d detail,)
GOSHEN
H. BEHLEN & BRO.
Aniline.
Shellacs
Stains
Fillera
10.12 Christopher St., New York
Near 6th Ave" and 6th St.
INDIANA
MonarchTool &Mlg.Co.
Wan 80: Coin Slide8, Reroll 1Ilachin e8, IIloney
Ooxe8, Pumps, Pump Hardware. Spe­
cial Parh Made to Order.
120 Opera Place
CINCINNATI, O.
WA SH I 'Ir. T0 1': , D. c., J ul y 31.- Steps will soo n
be laken b y th e U nit ed S tat es Departm e n t of
Agr icult ure to ado pt a new universal sta nd a rd
for the gra din g o f wool.
' \nnouncement has
ju s t b ee n made that l.lo y d S. Tenney, ass is tant
chief o f th e Ilu r eau of Ind\l s trial Econom ics,
and G. T. Willingmyer, woo l specialist, have
sa iled o n th e "Leviathan" to co nf e r with the
leadin g prod u ce rs and rep rese nt atives of Eu­
rope about t h e C01l1 m e r c ial c las ses a nel grade s
of woo l u sed in the co untri es visited. ,\ st ud y
of the En g li s h "count svs t e m " o f grad in g wool
will be made t o the e nd that a corre lation of
lhe Unit e d S ta t es a lld Br iti s h c lass ificati o n s
m ay be effected .
The United States r ece ntl y p ro lllui ga t ed wool
sta nda l:d s , bein g the fir s t co untr y to adopt offi­
c ia l g rad es based upon the prin ciple of th e di ­
a m e ter of th e fabri c. The joint cOlllmittee o n
research and sta nd ardizatio n, co m posed of rep·
resentatives f r o m th e leading woo l assoc iatio n s
in thi s count r y, recO lllm ende d that the Depart ­
ment of Ag ri cu ltu re d evelop a classi fi cat io n th at
wou ld recog ni ze th e g reat e r number of grades
emp lo y e d in th e manufacturin g indu s t!'y. The,·
pointe d out that fin er di s tinctions mu s t ne ces­
sarily be m ade in wool for manufacturin g pur­
poses th a n a r e poss ibl e o r ess e ntial fo r th e
g r ading of woo l in th e fl eec e. Tt is k now n th a t
t he d epar tm e nt offic ials fee l th at neithe r the
"count" pr in c ipl e of the Br iti s h n or the " blood "
basis of the .\1l1cri c;tn trade in g radi nc: woo l
r ea ll y means any thin g a nd that the trade should
h a ve so met hi n g more sc ientific.
PRESENT MARKET FOR VENEERS
Labor and Log Supply Is Short and Lower
Prices Cannot Be E xpect ed
Th e mark et for veneers and panel s , w hile in­
cl in e d to be sOlllCWhal "spo ll y, " lllainta i n~ a
1""ltll v tone and fair bu s iness is expected
during th e ba la n ce of t h e Summer, acco r din g'
to mark et experts writing in the Furniture :1'1an­
ufactur e r and Artisa n.
North e rn mills a r e still feeling the eff ('ct s
of labo r s ho rt age, which has h a ndi capped pro ­
duction and ca u sed d e lays on s hipments o[
orders book ed. The lo g s uppl y is far fr om
adequate. owing to t h e uncertain lll dition s durin g th e latter part of 1922, w hi c h h ac!
a tend e n cy to c Llrt ail logg in g operations . Th is,
together w ith th e short lo gg in g scason , natll­
1;-; ll y had its effect on the log ha r vcst. Whi le
logs C Ill o nth s, the cost of harvesting them i ~ lllll ch
gre ater.
Th e So uth h as expe rienced the heaviest rain ·
fall in it s hi Slor y for the pa of th e proble ill s h as been to get logs and ge l
cars to mov e th e m to th e mill s.
l,ea ther Specially
Tanned for Player­
Pianos and Organs.
Also Chamois
Sheepskins, Indias
and Skivers
A Specialty of
Pneumatic and
Pouch Skin Lp.athcrs