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Патент USA US2133089

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> s FRANKLINGRILLE STRUCTURE FOR ACCORDIONS
File4d May 16, 1938
2,133,089
2,133,089
Patented Oct. 11, 1938
_
UNITED STATES
PATENT OFFICE
2,133,089
'
GRILLE STRUCTURE FOR‘ ACCORDIONS
Stephens Franklin, Chicago, 111.
Application May 16, 1938, Serial No. 208,174
7 Claims. (CI. 84—37 6)
This invention relates to the removable cover,
sometimes called the “gallery”, which extends
over the valves of an accordion, and which gen
5
erally includes a grille of ornamental design,
adapted to permit the emanation of sound from
the reeds which the valves control. The object
of this invention is to provide an improved grille
construction for such a cover member or gallery,
designed to aiTord a pleasing ornamental appear
10 ance, to improve the tone quality ‘of the instru
ment, to strengthen the grille structure and to
permit‘ of economical production. The invention
consists in certain features and elements in com
bination, as herein shown and described and as
indicated by the claims.
In the drawing:
Figure 1 is a perspective view of an accordion
gallery constructed in accordance with this inven
tion.
20
2, so as to sub-divide them into a multiplicity of
small openings or slots. This produces the de
sired reticulated structure through which the
sound may escape from the reeds of the instru
ment, and at the same time lends itself to pleas
ing ornamental arrangements, of which that
shown in Figure l is only one example.
For convenience and economy of assembly, the
bars or strips, 3, may be made of sheet metal 10
formed as open channels with their side walls,
4, 4, trending toward each other, as seen in Fig
»ure 4. Short sections, 5, of metal strap are at
tached to the outer surface of the part, I, adja
cent the margins of the openings, 2, each such
section being secured by a suitable fastener, such
as a rivet, 6. These strap sections, 5, being spaced
apart at the desired intervals, and arranged in
alignment longitudinally of the gallery, I, de?ne
gallery shown in Figure 1, a portion being broken
the positions at which the bars, 3, are to be ap
plied. In each of these bars, 3, the distance be
away to condense the view.
Figure 3. is a detail section taken as indicated at
tween the side walls, 4, 4, is slightly less than the
width of one of the strap sections, 5. The edges
Figure 2 is a plan view of the under side of the
line 3—3 on Figure 2.
25
of the member, I, extending across the openings,
.
Figure 4 is a detail section on a larger scale than
Figure 3 for showing the means of attachment of
the molding strips or bars which form the grille.
Figure 5 is a detail view of the under side of a
fragment of one of the molding strips and the se
30 curing element therefor.
Figure 6 is an external face view of a portion of
a gallery showing a modi?ed arrangement of the
‘molding strips.
I
of the strap are slightly rounded, as seen in Fig
ure 4, so that the channel strip, 3, may be forced
onto the strap, the side walls, 4, 4, yielding slight
ly to admit the strap between them and then
holding frictionally thereto with sufficient force
to retain the bar ?rmly in position. Thus, after
the strap sections, 5, have been applied to the 30
celluloid cover member, I, in the proper positions,
the assembly of the grille is substantially com
pleted by merely pressing the bars, 3, into place
cut, and more or less molded to the desired shape.
over the strap sections, 5. If desired, a screen of
suitable fabric, such as silk, may be applied to the
inner surface of the gallery, I, to extend over the
openings, 2, so that the valves and other mecha
nism shall not be directly visible; but this is a
common expedient, and is not shown in the
To permit the emanation of sound from the reeds
drawing.
as the various valves are opened, this cover is
provided with openings which, in most instances,
The bars, 3, being made of sheet metal, may be
plated and polished in any desired ?nish, which
are arranged to form intricate ornamental pat
terns or designs. This requires that such open
ings be individually cut in the sheet material as
will afford a pleasing contrast with the surface
of the sheet material composing the body por—
tion of the cover or gallery, I. The end portions
In most accordions, as manufactured today,
35 the individual valves which controlthe reeds are
enclosed by a cover or gallery which’is removably
‘secured in place, and which is usually composed
‘of’ fairly thin sheet material, such as celluloid,
by means of a scroll saw or fret saw, requiring
of each channel bar, 3, may be specially formed
that a considerable amount of time and skill be
expended on each individual gallery. My inven
tion involves a much simpler and more economi
cal method of securing the desired result. The
cover member, I, is composed of celluloid or like
sheet material, but instead of an intricate design
it is provided with a few large openings, 2, which
may be, and are shown as, rectangular. Bars or
so as to close the channel; as shown in the draw
55 molding strips, 3, are secured to the outer face
5
40
ing, they are tapered and pointed as seen at ‘I,
but it may be understood that either a rounded
formation or a substantially blunt end is equally 50
feasible.
In Figures 1, 2 and 3, the bars are indicated as
extending longitudinally of the gallery, I, but in
Figure 6 I have shown a portion of a gallery, I0,
having relatively long rectangular openings, 20, 55
2
2,133,089
extending longitudinally therein with a series of
comparatively short bars or molding strips, 30,
crossing these openings, 20, in the direction of the
shorter dimension of the gallery. It will be evi
dent that various other arrangements may be em
ployed to vary the design and ornamental appear
ance of the structure.
As compared with a single layer or sheet of
celluloid into which a relatively intricate design
ii) is introduced by cutting out many small areas
of various shapes, the present construction is
not only simpler, but is much stronger and less
likely to become damaged by accident or rough
handling. The bars, 3, being of sheet metal, and
15 of channel formation, are comparatively sti? vfor
their weight, and serve to reinforce the light
sheet material of the body, I, to which they are
applied. Being of metal, they are unaffected by
climatic changes, and will prevent any tendency
20 of the celluloid portion of the gallery toward
7 Warping
It has been found that, :in use, a gallery of
this :type tends to improve the tone quality of
the instrument to a considerable extent. The
525 metallic structure consisting of the bars, 3, per
mits the reeds to send out a clear ringing tone,
whereas a grille ,or gallery of softer materials,
lic bars extending over the opening spaced from
each other to form a plurality of smaller open
ings, and means securing said bars to the outer
surface of the wall at points adjacent the mar
gins of its opening.
in
2. An accordion grille comprising a wall of
sheet material having an opening, and a plurality
of metallic bars extending over the opening
spaced from each other to form a plurality of
smaller openings, said bars being of channel
shape cross-section, and being mounted on the
wall against the outer face thereof and opening
inwardly.
3. An accordion grille comprising a wall of
sheet material having an opening, a plurality
of metallic channel bars extending over the open
ing and spaced from each other to form a plu
rality of smalleropenings, and projections on the
outer face of the wall at points adjacent the
margins of its opening and engaging in the chan IL)
nels of said 'ha-rs forsecuring them.
4.
accordion grille comprising a wall of
sheet-material having an opening, a plurality of
metallic channel bars extending across the open
ing and .spaced ‘from each other to form a plu- ,
ralit-y of smaller openings, and a series of pro
jections .on the :outer face of the Wall at points
such as celluloid and cloth, more commonly em
adjacent the margins of the opening, said chan
ployed, ‘tends to i-deaden or damp the musical nel bars .being resilient and sprung to embrace
130 tones. It ‘is also possible that the hollow forma
said projections for securement to the outer face v;
tion of the bars, 3, contributes in some degree :of the wall.
to this effect.
15. An accordion grille comprising a wall of
It will beunderstood that some of the advan
sheet material having a series of aligned :open
''-tages mentioned maybe secured if solid bars of ings, a plurality of metallic bars each extending
35 relative light metal :are employed instead of bars across all the openings of the series and :in par- ;
"of :channelshape, and that various other methods allel relation to the other bars, said :bars being
of securing the bars to the gallery wall may be ~spaced~1apart1to form a plurality of smaller ‘open
used. As indicated in Figure 6, round buttons, rings, and means projecting from the outer sur
:53, may be employed in combination with the face of the wall at points adjacent the margins
14.0 " strap sections, .5, or as substitutes for them, and
:of said ‘openings engaging said bars and securing
these fastening elements may be attached to the them :against .the -.outer face of the wall.
'Wall of the gallery ‘by screws or bolts instead of
6. An accordion grille comprising va wall :of
;by rivets, as shown in Figure 4. , The side walls, ,sheet celluloid -.or like material having one or
4, 9f thechannels, instead .of merely converging,
45 ‘:may be bent so that their edges constitute ?anges
which may peclampedunder the heads of secur
ing bolts or other fastening devices instead of re
more openings, a plurality of :metallic bars ex
tending-over said openings :and spaced ‘from each
=otherto‘form a plurality of smaller openingswith
,means securing said bars rigidly-to the outer sur
faceof the wall ;at points adjacent the margins
lying uponrrictionalonaeas in the structure here
in illustrated. But with any of these variations .of the openings.
7. An accordion grille comprising a wall of
3 50 :a gallery constructed in accordance with my in
;vention can‘ be manufactured economically, and sheet material having an opening, a plurality of
without the employment vof specially skilled op
tubular bar-s each slotted atone side to provide
;erators, while, at the same time, it is adaptable openings in said bars, said bars being arranged to
jto-a wide range of ornamental designs of rich ,extend-overftheopening in the wall in‘spaced re
and pleasing appearance, and .more in accord
lation from each other to form a plurality of
ance-with modern artistic trends than the elab smaller openings, and means extending from the '
orate grilles which have been heretofore em jouter faceof the wall and into the slots of said
played“
bars for securing them to the WaILxWhereby the
I claim;
securing means is concealed by the bars.
60
1. An accordion grille comprising a wall of sheet
:material having an opening, a plurality of metal
STEPHENS FRANKLIN.
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