Music Trade Review

THE
OCTOBER 20, 1923
MUSIC
TRADE
REVIEW
49
WW&)2I~:L\~ttE~~~); t~~~¥
for architects, construction engineers and con­
tractors.
No change will be made in the course as
Discussion Shows That Where Brilliancy Leaves Off Durability Begins-Former Property of
. presented in the past, except to include the
Varnish Depends Upon the Proportion of Resin in the Mixture Used
very recent results of research work in connec­
tion with glues. The points covered include
\n interesting discussion of the methods of
a ssisted eye, on the surface of the varnish coat.
methods of manufacture; characteristics and ad­
producing varnish brilliance versus durability
"The next experiment deals with the employ­
vantages of different kinds of glues; gluing
ment of moist driers when boiling the varnish.
:cppears in Veneers in an article by A. A. Kelly.
methods for various commercial ;voods; prep­
According to the latter the brilliance and luster
This practice was found to produce pinholes in
aration of the wood for gluing; proper pressure,
Ot the varnish depends on the resin employed in
varnish. To eight gallons of very fine African
temperature and assembly time; defects com­
i·t s production. The greater the proportion of
copal during the boiling were added eight
mon in gluing and how to prevent them; effect
resin used with the linseed oil the greater will
ounces of undried sugar of lead. After the
of kiln drying on the wood as compared with
iJe the luster of the varnish. The brilliancy of
varnish had stood to settle for eight months
air seasoning.
a varnish is a property dependent on its index
a pale yellow panel was varnished with jt. It
Inquines concerning thiS course should be
of refraction. .'\s the index of refraction of a
floated very well and set and looked well for
addressed
to the Director, Forest Products
re,in is greater than that of linseed oil, it
hours, when it began to dry off in small pin­
Laboratory, Madison, Wis. The fee for the
follows that the :,:;reater proportion of resin the
holes which completely covered the surface of
kiln drying course is $150; for all others, $100.
C::"eater the luster 01 the product.
the panel; some of these pinholes were as large
"f<~xperiments have been made on the 1111.­
as a pin head. The varnish coat dried off in
NEW FORESTRY POLICY PLANNED
provement of varnish by heat, and also by
seven hours without any tackiness,
aging, that would be useful and ver y interesting
"In the next experiment it was found that the
Special Committee of United States Chamber
here, but space limits our quotations. In one
greater the quantity of driers and acid used
of Commerce Outlines New Policy
of a large number of such experiments it was
the larger the pinholes were. Of this varnish,
BRILLIANCE AND DURABILITY IN PRODUCING VARNISH
foul"l that the employment of too much driers
in a varnish renders it o pa qu e and unfit for
dcll,'ale colors or light natural woods, An ex­
perimenter tells of how two panels were pre­
parcd a~ for carriage work, being glazed with
a VI"'." rich crimson lake, and then varnished.
No.1 'liaS varnished with body varnish made
[rom ,\ frican copal entirely, without any driers,
cithn in the clarified oil or in boiling. No.2
\\as varnished with body yarnish made from
the sarlle copal, age and proportion, but with
a small quantity of dried lead acetate (sugar
of lead) and dried white copperas. Panel No. I
dried in nine hours and remained tacky for five
hours morc. Panel No.2 dried in seven hours
and without tack. In a da" after both panels
were fhtted down and varnished and repeated
until each panel had Four coats of varnis h. The
varnish ,vas eight months old and each dried in
(he same amount of time. The panels we re
then hung up for one month when they were
polished and cxanlined with a microscope.
Fanel .\f o. 1 appcared to be quite cl ear in color
and solid and brilliant, like plate glass. But
No.2 had changed a trifle in color, inclining to
a purplish cast; in the varnish were seen almost
imperceptible opaque points.
"These two experimental panels were then
laid by lor the space of two years, when they
were again cxamined
There did not appear
to be any decay in panel No.1, but in panel
No.2 the driers wcre to be seen with the un-
Write for a sample can of Behlen's
Vamish Crack Eradicator and try it.
Once you learn how much it means to
you in the saving of time on your refin­
ishing jobs by eliminating the necessity
of scraping off old varnish and shellac,
and how much more satisfactory are
the results, because of the better sur­
face it gives to work on, you, like others
will continue to use it.
Laboratory at Madison Offers Number of Fall
Courses in Lumber Practice
MAIJISON, V-/Is., October 15.· December 3 to 8
has been fixed as the date for the next course
in the gluing of wood to be given by the Forest
Products Laboratory, Madison, Wis. This will
be the seventh time that this course has been
given at the laboratory. Forty-six firms, repre­
senting fifteen different industries, have sent
employe s to take previous cours es of thi s kind.
Five courses will be given. These include the
kiln drying of lumber, which has previously
been given to thirty-one classes, totaling 370
individuals from all parts of the country; boxing
and crating, given twenty times to 184 repre­
sentatives; gluing of wood, six classes with a
total enrollment of fifty-five; wood properties
and uses (formerly called the lumber sales­
men's course), three classes with twenty-three
individuals. The fifth course, wood as a build­
ing material, is a new one designed particularly
Wall Roxes, 1Ila&"azlne Slot Boxes,
Coin SlId"., ReroU Ma.,hlne., Money
Boxes, Pumpa, Pomp Hardware. Sp.­
.,Ial Partl Made to Order.
120 Opera Place
FlY
H. BEHLEN & BRO.
Shellacs
FOREST PRODUCTS COURSES
MonarchTool & Mlg.Co.
Write to-day.
Aniline.
of which there were eight gallons, six gal­
lons were emptied into another vessel, and out
of the remaining two gallons another panel was
varnished; the panel dried in the same space
of time and went not only into pinholes, but
caused large blotches all over the panel.
"\\'e find, therefore, that according to the
amount of resin and oil will the luster be greater
or lesser. In order to produce a varnish for
any particular purpose this fact has to be kept
in mind. If a brilliant varnish is desired the
resin must not be less than one-third to one­
fourth of the dried coat by weight. Where a
durable varnish is to be made, coach varnish
for instance, a larger proportion of resin to the
amount of oil is used, but with piano varnish
durability is to a certain extent sacrificed to
luster, and hence we find a large resin content
in such a varnish. vVhere brilliancy leaves off,
durability begins. /\nd the harder the resin the
greater the brilliance."
THE
Stains
Fillers
10.12 Christopher St., New York
OINOINNATI, O.
I
GOSHE N
Leather Specially;
Tanned for Player~
Pianos and Organs.
Also Chamois
Sheepskins, Indias
and Skivers
A Specialty of
AT{.T NO\?ELTVCO.
c..ol.,i~ _nu/.oluNN'!
Piano Beneh.es
and Musie eabinets
lIIritefo-rccdalOfJ Wlci detail"
Near 6th Ave.. and 8th St.
A national forestry policy, with the idea of
the conservation of the nation's lumber re­
sources as its object, has been proposed by a
special committee of the "Cnited States Chamber
of Commerce and was laid before the directors
of the Philadelphia Bourse for consideration at
their meeting last week.
In summing up the present timber situation
the special committee in its report says among
other things:
"Our original timber is 70 per cent gone. We
are using timber four and one-third times faster
than it is growing. Certain important industries
are suffering through shortage. Certain locali­
ties have decreased in wealth and population
through the removal of forests. The public is
paying increased freight expense, which will
continue to increase.
No commodity enters
lllore into every-day life than wood and its
scarcity or increase in price affects every citizen.
Vve must conserve our timber resources and
develop the idle lands in each State (there are
thirty-three States consuming more lumber than
they produce) by reforesting."
As showing the burden placed on the nation
as a whole as one after the other of our im­
portant Eastern timber regions have been "cut
out," the report states that Pennsylvania in 1890
ranked first in lumber production; in 1899, pro­
ducing 2,321,284,000 feet, the State ranked
fourth; in 1920, producing 520,000,000 feet, it
ranked twentieth.
Fight distinct proposals were listed by the
committee as a program for aiding timber con­
servation and can be reduced to the following:
the reseeding and replanting of waste lands, to
be undertaken by both the Federal and State
governments; the appointment of Federal for­
estry and conservation committees and the
arrangements for national surveys and inven­
tories of forest resources; the increase of Fed­
eral appropriations by Congress for the protec­
tion of timber lands against fire.
INDIANA
Pneumatic and
Pouch Skin Leathers