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Патент USA US2110747

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March 8, 1938.
C. TREVOR
2,110,747
HARMONICA TESTER
Filed April 5, 1957
INVENTOR
Qmmzzs Tamvam ,
IATTO R N EY
2,110,747
Patented Mar. 8,' 1938
UNITED STATES PATENT OFFICE
2,110,747
HARMONICA TESTER
Charles Trevor, Jersey City, N. J.
Application April 3, 1937, Serial No. 134,761
3 Claims. (Cl. 84--3'77)
This invention relates to new and useful im
provements in a harmonica tester.
More specifically, this invention contemplates
the provision of a mouthpiece which may be used
5 in connection with a harmonica to test the reeds
tester, per se.
*
5
bulb constructed of soft rubber or similar ma
Fig. 3 is an enlarged sectional detailed view
of a portion of Fig. 2.
Fig. 4 is a sectional view taken 'on the line
4-4 of Fig. 3.
The harmonica tester, according to this in
vention, includes a mouthpiece H which is adapt
ed to be engaged over the front edge of a har
monica l2 and resiliently maintain its position
thereon and also capable of manual movement
along the harmonica II. A bulb I0 is mounted on 15
said mouthpiece for forcing air through said
mouthpiece to sound and so test the harmonica.
The mouthpiece ii comprises a lip portion II8
and a rear portion llb pivotally connected to
gether by means of a pintle pin i3 forming an
axis therefor. The lip portion lla has a circular
disc element l4 ?xedly mounted thereon by
terial which is attached to the back of the mouth—
piece and which may be compressed to force air
through the mouthpiece to sound and so test
the harmonica.
Still further the invention is characterized by
section l I6 to which a plate i6 is ?xedly attached
by means of rivets ll. The. section He is vul
canized, cemented, or in any other manner ?xed:
ly attached to an element lld forming the com
thereof.
The use of one’s mouth for testing
harmonicas in factories has proved very un
sanitary and has been outlawed in a number of
states.
10 . Further, if one continually blows upon a har
monica the edge-portions thereof tend to scrape
and irritate the lips of the person doing the
blowing with the result that unsightly sores
develop.
The invention is further characterized by a
15
. mouthpiece which is adapted to be resiliently
engaged over the front edge of a harmonica for
maintaining the harmonica “in position and for
permitting it, to be adjusted across the front
20
Fig. l is a perspective view of the device en
gaged on a harmonica with a portion thereof
broken away to reveal interior construction.
Fig. 2 is a perspective view of the harmonica
thereof.
-
The invention is further characterized by a
a mouthpiece having a construction which per
mits it to be easily engaged and removed from
the harmonica to enhance the testing qualities
30
thereof.
_ Another characteristic of the invention is the
provision of an adjustable means-associated with
the mouthpiece of the device which may be used
in conjunction with a harmonica having a double
row of reeds to selectively test either the upper
or lower row of reeds.
Still further the means for selectively testing
the upper and lower row of reeds provides super
40 imposed openings in the mouthpiece which are
alignable with the superimposed openings in the
front edge of the harmonica and a disc member
rotative in said mouthpieceand having a pair of
openings at right angles to each other adapted to
45 be selectively engaged with either of the openings
in the mouthpiece to permit the air to pass
through the reeds.
For further comprehension of the invention,
and of the objects and advantages thereof, refer
50 ence will be had to the following description and
accompanying drawing, and to the appended
claims in which the various novel features of the
invention are more particularly set forth.
In the accompanying drawing forming a mate
rial part of this disclosure-'
means of rivets IS. The rear portion iib has a
pleted back portion H”.
The harmonica l2 has superimposed openings
i8 which lead to a double row of reeds contained
within the harmonica l2. The lip portion III‘ of
the mouthpiece ll engages over the sides l2a
of the harmonica and has resilient ?anges l9
?xedly attached at one of their ends to said lip
portion and frictionally engaging the sides of
the harmonica to maintain the lip portion H"
in position thereon and permit it to be manually
moved along the front edge of the harmonica.
These ?ange portions iii are vulcanized, cement
ed, or in any other manner attached to the lip 40
portion ll“.
.
The lip portion H8 has a pair of openings 20
angularly spaced 180° relative to the axis of
the pintle i3 which are alignable with the pas
sages i8 in the front edge of the harmonica to 45
permit the air to pass therethrough to the reeds.
The rear portion Iib has a pair of passages 2i
(see Fig. 4) angularly spaced 530° relative to the
axis of the pintle pin l3 which are selectively
alignable with the passages 20 when the bulb 50
portion I0 is rotated through 90° to permit the
air to be selectively passed through the upper
or lower ‘passages 18 to sound either the upper
or lower set of reeds.
The back section II‘1 has a screen 22 mounted 55
2
2,110,747
therein to stiffen this section and help it to main
tain its normal shape to prevent buckling be
tween the disc element I4 and the plate II to
prevent rotation thereof. This section lid is also
fixedly connected with the bulb H) which is con
structed of a relatively soft rubber material which
is easily compressed to force air through the
passages 20 and 2| wthin the mouthpiece II
of the harmonica tester and through to the pas
ll) sages I 8 in the harmonica l2.
'
A means is provided on the disc I‘ which en
gages the plate IE to limit the distance through
which these elements may be rotated to 90°. This
means includes a pin 26 extending from the disc
I‘ and engaging in a 90° slot 28 angularly formed
180° from the openings 2| in the rear section l I”.
Thus the bulb "I may be turned through 90° to
complete a passage through the upper opening 20
or through the lower opening 20 (see Fig. 3).
The operation of the device is as follows:—
Assuming that the position of the elements
shown in Fig. 3 is their normal position and the
bulb I0 is compressed, the air contained there
in will pass through the screen 22, the opening
2|, the top opening 20 in the lip portion III
which is aligned with the top openings l8 in the
harmonica [2 which permits the air to freely pass
to the reeds within the top passage Hi to sound
30
35
40
50
60
and so test the harmonica.
If it is desired to test the lower reeds of the
harmonica the harmonica is held rigid in one
hand while the bulb I0 is rotated through 90°
by the other hand. When the bulb I0 is now
compressed the air will pass through the opening
2 I‘ (see Fig. 4)_which is now aligned with the low
er passages 20 (see Fig. 3) to permit the air to
pass through the lower passage l8 to pass over
the lower reeds within the harmonica l2 to test
these reeds. Thus it may be seen that by a sim
ple twist of one's wrist, while the other is main
tained rigid, the device may be adjusted to easily
test the upper or lower reeds of the harmonica
I2. The flange members I9 which engage the
sides of the harmonica l2 resiliently maintain
the lip portion I I‘ on the edge of the harmonica
)2 and at the same time act as a seal to prevent
the compressed air from passing between the
sides of the harmonica l2 and the lip portion I ll.
While I have illustrated and described the pre
ferred embodiments of my invention, it is to be
understood that I do not limit myself to the pre
cise constructions herein disclosed and the right
is reserved to all changes and modifications com
ing within the scope of the invention as de?ned
in the appended claims.
Having thus described my invention, what I
claim as new, and desire to secure by United
States Letters Patent is:—
1. In combination with a harmonica having a
double row of reeds, a harmonica tester compris
ing a mouthpiece having a pair of superimposed
openings alignable with the passages to said
reeds and being adapted to engage over the
front edge of a harmonica and a bulb mounted
65 on said mouthpiece for forcing the air through
said mouthpiece to sound and so test said har
monica, and means on said mouthpiece for selec
tively testing the upper or lower reeds of said
harmonica when said bulb is compressed, said
means comprising said mouthpiece having a
front and rear section rotatively connected to
gether, a disc element fixedly mounted on said
front section and having superimposed openings
alignable with said openings, a plate element
having a pair of openings at right angles to each 10
other and selectively alignable with the super
imposed openings in said disc element to per
mit the air to be forced through to either the
top or bottom row of reeds.
‘2. In combination with a harmonica having a
double row-of reeds. a harmonica tester com
prising a mouthpiece having a pair of superim
posed openings alignable with the passages to
said reeds and being adapted to engage over the
front edge of a harmonica and a bulb mounted
on said mouthpiece for forcing the air through
said mouthpiece to sound and so test said har
mlonica, and means on said mouthpiece for selec
tively testing the upper or lower reeds of said
harmonica when said bulb is compressed, said
means comprising said mouthpiece having a front
and rear section rotatively connected together, a
disc element fixedly mounted on said front sec
tion and having superimposed openings alignable
with said openings, a plate element having a pair '30
of openings at right angles to each other and
selectively alignable with the superimposed open
ings in said disc element to permit the air to be
forced through to either the top or bottom row
of reeds, said rotative connection comprising a 35
pin rotatively connecting togther said disc ele
ment and said plate element.
3. In combination with a harmonica having a
double row of reeds, a harmonica tester compris
ing a mouthpiece having a pair of superimposed
openings alignable with the passages to said reeds
and. being adapted to engage over the front
edge of a harmonica and a bulb mounted on said
mouthpiece for forcing the air through said
mouthpiece to sound and so test said harmonica.
and means on said mouthpiece for selectively
testing the upper or lower reeds of said harmon
ica when said bulb is compressed, said means
comprising said mouthpiece having a front and
rear section rotatively connected together, a disc 50
element ?xedly mounted on said front section and
having superimposed openings alignable with
said openings, a plate element having a pair
of openings at right angles to each other and se
lectively alignable with the superimposed open~
ings in said disc element to permit air to be
forced through to either the top or bottom row
of reeds, and a screen mounted just in back of
the openings in the rear section of said mouth
piece to reenforce said mouthpiece and prevent
the sections thereof from buckling and so hinder
rotation of the sections when the bulb is com
pressed.
CHARLES TREVOR.
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