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SEPTEMBER
15
THE MUSIC TRADE REVIEW
18, 1920
OufTECHNICAL DEPARTMENT
CONDUCTED BY WILLIAM BRAID WHITE
to carry in the kit, for making new parts, or
repairs. For instance, suppose a small wood
flange is split and you cannot wait till it has
How Do You Figure Required Spring Pressure
dried. Then just glue up the split, drill a
for the Reservoir of a Reed Organ? A Novel
fine hole across it, run in a little maple pin
Question of Much Interest and Its Answer
to fit the hole, using glue on it; and you can
safely put the flange back in place almost as
"Dear Mr. White:—I want'to know how to
soon as you have finished the operation.
YANKEE
WRINKLES
FROMYANKTON
calculate the pressure required for the springs
A Bass Bridge Stunt
of both the equalizer and what you term 'pumps' Being a Garland Culled from the Garden of
"3.
For
some
time back I have been getting
or 'pumpers' in reed organs. I can understand
Brother Stratton, the Unterrified Son of the an unusual number of cases of bass bridges
that the larger the equalizer the greater the
Dakotas, Who Lives in the Town of Yanks
which have become unglued. Usually I have had
external air pressure: but I cannot figure so well
good success in treating these in the ordinary
on the leakage. Also give suggestion as to rela-
Mr. dear Mr. White:—Here is a collection of way by working in glue and screwing down.
tive size of equalizer and pump. Sincerely yours, kinks and wrinkles which I have picked up
But last year I found a piano which had pre-
1\. C. Conner, Jasper, Ala."
at odd times and which may interest you and viously been fixed in the same way and had
Reed organs operate on low pressure, which the good readers of The Review's Technical De-
broken out again. The customer was discour-
may be as little as four ounces or as much as partment.
aged
and thought it useless to try again. I
eight. I should say four ounces is a fair,
"1. What would you do if you had an ivory
ordinary pressure, equivalent to a water'column to glue on and no glue? Would you be stumped? made a proposition of an absolute guarantee
of a permanent repair or no pay.
reading of, say, seven inches.
No, indeed, you ought not to be, for usually all
"I first removed all the bass strings and put
Usually speaking, the reed organ is designed the old glue is left on the wooden part of the
their
lower ends aside. The bridge was unglued
to render steady power without rapid changes key. So, get some hot water in a dish and
nearly
all the way. After removing the old glue
and the equalizer therefore should be large rela- fold up a cloth several thicknesses to a trifle
tive to the pumpers. You might say that the longer than the ivory piece. Carefully scrape I obtained some 3/16" stove bolts with counter-
area of the moving wall of the equalizer should the dirt and grease from the key and then soak sunk heads and then drilled corresponding holes
be one and three-fourths times the area of the a cloth pad in the hot water, wring it out just through the bridge, from the extension piece at
the top to the base piece which rests on the
moving wall of either pump.
enough to get rid of the surplus hot water
The pressure at which the equalizer should and lay it quickly on the key. In a moment board. Then I glued and put in the bolts. I then
close must be a little less than the minimum or two the glue will be softened. Then, if removed the screws which had held the base
required to make one reed speak. The reeds you can get some Le Page's glue, take a very of the bridge to the board and extended them
will usually speak on a very low pressure, very little of this on a flat stick and work it into the on through the extension piece. Then I glued
likely not exceeding one ounce. On a reservoir softened glue till it is all even and white, then to the board and in place of screws put in more
of, say, 300 square inches area of moving wall, put on the clamp and. you have a good job. of the bolts. Then, when the strings were
the spring would not have to be heavier than But if you have absolutely no glue at all? Then replaced and retuned, the customer was de-
nineteen pounds, therefore, and could doubtless clamp the ivory on the softened glue and it lighted. The piano was really a fine one, which
made it so much the better.
will hold if there is any of the old stuff left.
"I have often tried the bolt plan since, es-
"2. Speaking of broken brass flanges, I notice pecially when it was, for any reason, not advis-
that one of your recent correspondents turns able to take the bridge out.
the little brass flanges of the action when they
That "Tuned" and "Untuned" Experiment
crack. I have tried this with somewhat uncer-
"4. Certainly that was an astounding result
tain results. Here is. I think, a better plan: which came from the experiment made by the
Cut a little block of hard maple the size of director of the Edison Symphony Orchestra in
the broken post, but make it as much thicker Chicago, on employes of the Commonwealth Edi-
as there is room. Then with a drill make the son Co. of that city, when five hundred persons
notch at end and the hole for screw. Then registered their preferences between a tuned
turn in the screw, which will cut a thread for and untuned piano, and the great majority pre-
itself.
ferred the untuned instrument. This comes
"Incidentally, a drill is a most useful tool near to knocking the pins from under one. The
first thought is 'What is the use of spending
Scratches Yanish Instantly
time to get as nearly as possible to perfection
Every delivery man should carry a Magic
Scratch Remover in his pocket. Touching
when we could apparently save the time and
up a scratch before it is noticed will save
make more money?' To tell the truth, I greatly
tons of grief from complaints. The Scratch
Remover does its work instantly and mag-
feared the effect
of this expose upon
ically.
the younger lot of tuners, especially those who
FREE TRIAL OFFER
Perfect Fit to Any Scale
play for movies, dances, etc., and tune on the
Send no money. Order a half dozen sent
post paid at $2.60. Try them. At the end
side. They are jazzy enough already . . . and
Handy Control, Trouble Proof, Durable
of ten days either pay for them or return at
now . . .!
our expense.
and Installed in Half Hour. Money and
Campbell's Quick Refinishing Outfit will
"You did not tell us what class of people it
remove any serious damage to any finish in
Time Saver.
a jiffy, without waiting for varnish to dry.
was
on whom the test was made. Probably it
Sold on 10-day Free Trial basis at $10 and
$17.60.
was a mixed lot, but really I should not have
Write for Circular and Prices
Campbell's Outfits and Scratch Remoz'er
(Continued on page 16)
are available to phonograph dealers through
FIGURING BELLOWS DIMENSIONS
work well on sixteen pounds. The pumper
springs may be of fourteen pounds.
As for the leakage, by which I suppose you
mean the inrush of air through the reed-cells
in playing, it may be figured that not more than
ten reeds can be open at one time.
TUNERSand DEALERS
Get This New Ukulele Attachment
the Dealer Se vice department of the
Columbia Graphs 'hone Company.
Furniture
dealers order direct from
factory.
•The ML- CAMPBELL-COMPANY-
P. & F. MFG. CO., Minster, Ohio
Here are
POLKS
BASS STRINGS
TUNINO
1 U W VJ K. IS
In H 's lo^ear
wilh upwards of
1OOO
SUCCESSFUL
GRADUATES
Special attention given to the needs of the tuner and M M factor
FINISHING
706
PRODUCTS
OTTO TREFZ
Si 110 Falrmount Avenue
E A S T 19m HTREET
FAUST SCHOOL
OF TUNING
Standard of America
Alumni of 2000
Piano Tuning, Pipe and Reed Organ
and Player Piano. Year Book Free.
27-29 Gainsboro Street
BOSTON, MASS.
Philadelphia, Pa.
COURT HOUSE SQ,
VALPARAISO. IND.
The TUNER'S FRIEND
Old style bridle str*n
New style all leather bridle strap
BRAUNSDORF'S ALL LEATHER BRIDLE STRAPS
Labor Saving; Mouse
Send for Samples.
Proof; Guaranteed all one length
Prices on Request
Fell* and Cloths in any Quantities
GEO. W. BRAUNSDORF, Inc.,
Braunsdorf's Other Specialties
Paper,
Felt
and
Cloth
Punching*, Fibre Washers
and Bridges for
Pianos, Organs and
Player Actions
Office and Factory:
430 East 53rd St., New York