US1899357A

US1899357A - rieschick

Info

Publication number: US1899357A
Authority: US
Publication date: 1933-02-28
Anticipated expiration: 1950-02-28

Description

Feb. 28, 1933. R .R|ESCH|CK 1,899,357

PIANO-ACCORDION Filed March 28, 1932 2 Sheets-Sheet l Feb. 28, 19343. R R|E5CH|CK 1,899,357

PIANO-ACCORDION Filed March 28, 1932 v 2 Sheets-Sheet 2 r'a ATTORNEY.

Patented Feb. 28, 1933 PATENT OFFICE REIN HOLD RIESCHICK, OF NEW YORK, N. Y.

PIANO-ACCORDION Application filed March 28, 1932. Serial No. 601,587.

`This invention relates to improvements in piano-accordions, banjos and similar musical instruments, and is particularly directed to the casings or housings supporting the key controlled devices and whereby said devices or operative parts are rigidly supported against working strains, thus maintaining perfect alignment and constant co-active relative positions of the moving treble elements of the musical instrument, and wherein changing climatic conditions have no disarranging effect.

A principal object of the invention is to produce improved housings Vfor the treble and bass mechanisms to eliminate distortions in said mechanisms for the purpose of prolonging the satisfactory service lite of the structural parts of a. musical instrument oil the piano-accordion type.

inventive features of the invention are seen in the provision of all-metal housings and a laminated metallic valve panel built into the walls of the treble housing of the accordion, ccnsistinor of upper and lower fixed metal plates and a tone controlling slidably mounted valve plate operable therebetween.

A further feature of the invention includes the provision of an all-metal housing containing the treble parts of the piano-accordion; said housing including a piano-keyboard portion and a base portion, constituting the sound chamber, and being of one piece or unitary construction and of suitable resonate metal, for increasing the tonal qualities and rigidity of the structure.

The invention furthermore ha's'for an object, the production of a piano-accordion of 40 this character having the functions and advantages noted and at the same time enhancing the appearance of the musical instrument by reason of an entire metal surface which is susceptible of many desirable vornamental finishes, and it will be understood that the invention is not limited to any particular physical embodiment but may be expressed in different structures and forms within the scope of the invention claimed.

A preferred and principal feature of construction is in forming a keyboard back portion at the top with a channel or guideway, and also with end flanges, and further, in eX- tending the said keyboard back portion horizontally over the sound chamber to constitute the lower plate of the said laminated ported valve panel for adding strength to the built up treble housing.y

In the drawings, similar reference characters are empioyed to designate corresponding parts throughout the several views thereof, in which: f

Fig. 1 is a partial diagrammatic sectional elevati on, showing the treble and bass housings or casings for' supporting the active 65 parts (not shown) of a piano-accordion, and an interposed bellows; and further, indicating by dotted lines the usual reed-blocks located within the said treble housing, but omitting the reed blocks of the bass side of the instrument as well as other elements of the device.

Fig. 2 is a detailplan view o1E the slidable portion or damper of the sectional ported interposed plate of a laminated ported panel built into the base portion of the said treble housing.

Fig. 3 is a detail section, taken on the line 3-3 of Fig. l., showing certain parts whereby the damper plate is actuated.

Fig. 4 is a vertical cross-sectional view taken on the line 4 4 of Fig. l, with the ports of the panel in the full-tone position, and looking as the arrow points, but showing the right end portion of the treble casing only.

Fig. 5 is a partial horizontal section, taken on the line 5 5 of Fig. 4, showing the ported panel in plan view, with parts broken away to disclose clearances formovements of the damper plate, and the relation of the ports.

Fig. 6 is a detail section on the line 6-6 of Fig. 5, showing how certain sectional parts of the damperv plate are fixe-elly attached to the upper and lower plates of the ported panel to form a laminated structure.

Fig. 7 is a detail section taken on the line 7 7 of Fig. 5, showing how another section of the interposed plate is secured in place between the upper and lower lamina of the ported panel.

received to normally rest o-n and over their Fig. 8 is adetail sectional view taken on the line 8 8 of F ig. 4, showing a pivotal mounting for a part of the damper plate actuating means.

Referring to the drawings in detail, 10 designates generally a piano-accordion of the better type, with the key parts and reedV sound chamber 14surrounded by suitably reinforced base forming walls 15, supporting a unitary keyboard or portion 16, having at its top and ends, integral fianges 17 collectively defining a piano key chamber 13.

A laminated ported panel'19, is built into the base walls 15, of the treble housing; said panel comprising an upper plate 20, a lower platey 21; and a central plate 22, composed of' several iiXeo sections 23 and 23a, and a slidable damper-plate section 24, having integral ears 25, from which rounded pins 26 projectfor attachment to a shifting means hereinafter described. Thedamper-plate 24 has formed therein a series of oblong ports 27, anda series of rectangular openings 28, somewhat longer than the fixed damper-plate sections 23, to permit of limited sliding movements of said damper-plate 24, asbest shown in Fig. 5.

lThe upper and

lower plates

20 and 21, and the sections 23 and 23a of the central plate 22, are riveted together as at 29, and said plates and sections are provided with registering ports 30; the ports 27 of the damper-plate 24, being normally in Vregistration with corresponding ports 30 of the panel 19, but are out of registration with said ports when the damper plate is shifted to dampen the tones of the piano-accordion, as will be obvious to those skilled in the art.

.The usual reed-blocks, common to this type of instrument, are only indicated at 32 by dotted lines in the sound chamber 14, of Fig. 1, and similar reed-blocks are, of course, also employed in connection with the bass housing of the piano-accordion, the inner wall 32 thereof having appropriate ports 33, for tone outlet through the grill or open-work outer wall 34, of said bass housing 12; dust and dirt being excluded by a lining of suitable fabric 35.

The space between the base walls 15, above thelamina-tedV panel 19, may be termed a valve chamber 36, see Fig. 1, in which the velvets or valves of the instrument may be respective ports of the ported panel, and

piano-keys rockable on the center 37, (Fig. 1) operate the valves or velvets as is well known; the keys and s'upported velvets and the bass buttons and connections being omitted, as they form no part of this invention.

A cover for the valve or velvet chamber 36, isy shown as a grill or open-work plate 38,- which has a fabric lining 39, to exclude dust from said valve chamber, but permitting full exodus of musical tones therefrom.

The means for shifting the damper-plate 24 longitudinally between the fixed plates and the sections of the laminated panel plate 19, to regulate the tones of the piano-accordion, may comprise an outer manually actuated slide or shift bar 40, formed with gripping ribs 41, mounted to operate on the top flange 1'? of the piano-key chamber, and which is connected by screws 42 or the like, passing through slots 43, (Fig. 3) in the said flange 17, to and through an inner slide bar 44, which in turn is provided with thickened portions 45, operating in other slots 46 in said flange 1?, for limiting the movements of the shift bar; the thickened portions are provided with l slots 47, to freely receive the upper ends 48, of rock-levers 49, which as in Figs. 1,4 and 8, extend throu `h bridge plates 50, secured to the back wal or chamber 18.

The rock-levers 49are each pivoted as at 51 to the respective bridge plates 50, and are extended downwardly and slotted as at 52 to receive their respective projecting pins 26, on the ears 25 of the damper-plate 24.

rlhus it will be apparent that longitudinal movement Vof the top or shift bar 40, will rock the levers 49 on the' pivots 51, and

plate 16, ofthe piano-key through the described slot and pin connections with the ears 25 and of the damper-plate 24, the saine may be longitudinally actuated to control the tonal qualities of the pianoaccordion, as will be readily understood.

rlhe laminated ported panel 19, is built into the walls 15, of the said base portion of the il" treble housing by providing an overhanging shoulder 15a in said walls, between which and a continuous flange 52, the said panel is rigidly held, the said overhanging shoulder a 15a is continued along the inner faces of the 3' i front and end walls of said base portion.

The all-metal treble and bass housings of the piano-accordion may be reinforced whereever desired to produce a sturdy, rigid, resonate structure for supporting the contained t operable parts against warpage or distortion, to maintain relativeuniform actions and results in a musical instrument mechanism.

An important feature of reinforcing the base portion 9, ofthe instrument is the pro- 7 Another important feature, for strength and durability, is the forming of the back plate portion 16 integrally with the lower plate or lamina 2l of the ported panel, as clearly shown in Fig. 1 of the drawings.

I claim:

l. In a piano-accordion structure, an allmetal casing for supporting and housing the elements operatively active for playing the treble notes of the accordion; an all-metal casing for supporting and housing the elements operatively active for playing the bass notes of the accordion and a bellows coordinating with the said treble and bass elements, and connecting said housings for the purpose of generating air pressures and vacuums for operating the said elements to produce musical tones; said all-metal housings providing security against distortion of the working elements supported thereby; and a laminated ported metal panel built into the walls of the housing supporting the treble elements of the accordion,

2. In a piano-accordion structure, an allmetal casing for supporting and housing the elements operatively active for playing the treble notes of the accordion; an all-metal casing fer supporting and housing the elements operatively active for playing the bass notes of the accordion and a bellows (fo-ordinating with the said treble and bass elements, and connecting said housings for the purpose of generating air pressures and vacuums for operating the said elements to produce musical tones; said ell-metal housings providing security against distortion of the workin elements supported thereby; and a laminate ported metal panel built into the walls of the housing supporting the treble elements of the accordion, consisting of upper and lower fixed ported metal plates and an interposed movable ported metal plate.

3. In a piano-accordion structure. an allmetal casing for supporting and housing the elements operatively active for playing the treble notes of the accordion; an all-metal casing for supporting and housing the elements operatively active for playing the bass notes of the accordion and a bellows coordinating with the said treble and bass elements, and connecting said housings for the purpose of generating air pressures and vacuums for operating the said elements to produce musical tones; said all-metal housings providing security against distortion of the working elements supported thereby; and a laminated ported metal panel built into the walls of the housing supporting the treble elements of the accordion, consisting of upper and lower lixed ported metal plates and an interposed movable ported metal plate; the plates of the built-in panel having normally registering ports and the movements of the interposed ported plate controlling the tonal qualities of the accordion.

4. In a piano-accordion structure, an allmetal casing for supporting and housing the elements operatively active for playing the treble notes of the accordion; an all-metal casing for supporting and housing the elements operatively active for playing the bass notes of the accordion and a bellows co-ordinating with the said treble and bass elements, and connecting said housings for the purpose of generating air pressures and vacuums for op-v erating the said elements to produce musical tones; said al1-metal housings providing security against distortion of the working elements supported thereby; and a laminated ported panel built into the walls of the housing supporting the treble elements of the accordion, consisting of upper and lower fixed ported metal plates and an interposed movable ported metal plate; the plates of the built-in panel having normally registering ports and the movements of the interposed ported plate controlling the tonal qualities of the accordion, said interposed ported plate being manually controlled from the exterior of said accordion.

5. In combination; in a piano-accordion, a casing part constructed entirely of reinforced resonate metal for supporting the treble parts; a casing part constructedentirely of reinforced resonate metal for supporting the bass parts; a bellows connecting said casing parts; a laminated ported panel built into the walls of the treble casing part and means for slidably operating a lamina of said ported panel for the purpose set forth.

6. In combination; in a piano-accordion, a casing part constructed entirely of reinforced resonate metal for supporting the treble parts; a casing part constructed en tirely of reinforced resonate metal for supporting the bass parts; a bellows connecting said casing parts; a laminated ported panel built into the walls of the treble casing part and means for slidably operating a lamina of said ported panel for the purpose set forth. said means comprising pivotally connected rock bars operable eXteriorly of said treble parts supporting casing.

7. A piano-accordion embodying all-metal treble and bass frame structures and an attached bellows; the treble frame structure having a three plate ported panel of metal, including upper and lower fixedY ported plates and a central sectional ported plate; sections thereof being riveted or otherwise secured to the upper and lower plates of said panel; another section of said central plate being slidable between said upper and lower plates for regulating the tone volumes; and means pivotally connected to the slidable plate for controlling its movements from without the treble frame structure.

8. A piano-accordion embodying all-metal treble and bass frame structures and an attached bellows; the treble frame structure 'having a three platevported panel of metal,

including upper .and lower lined ported plates and a central sectional ported plate; sections thereof being riveted or. otherwise secured Vto the upper and lower plates of said panel; another section of said central plate being' slidable between said upper and lower plates for regulating the tone velumes;

and means pivetally connected to the slidy able plate for controlling its Ymovements from lwithout the treble frame structure; the ports of said slidable plate being normally in registration with the ports of the said upper and lower plates of the ported panelY toperniit full tones to escape therethrough, while movement of the slidable platefto its eXtreme opposite position acts to reduce the ton-ev volume emanating' from the ports of said panel for damping effects.

9. A piano-accordion having; an all-metal Y frame for supporting the treble keys thereof; said frame embodying` a reinforced body portion; an all-metal key-board integral with said body portion; a panel built into the walls Vof said body portion; said panel comprising,- upper and lower fixed plates having .registering ports, and an interposed sectional plate having' ports normally registering with the ports of the other plates; Vsections of the interposed plateA being iXedly secured; and one other section being slidable and being; `formed with integral ears each formed with a projecting pin; in combination with manually operable means connected with said pins, for sliding` the free section of the interposed plate for damping the tones of the said piano-accordion.

10. In combination; an all-metal casing for supportingl treble parts of a piano-accordion, said easing embodying abase portion and a key-board portion formed integrally one with the other; a laminated allmetal ported panel built into the walls of said base portion, a lamina of said panel being relatively slidable; an all metal easing for supporting thebass parts of said pianoaccordion; a bellows connecting' the said easings; and means for .actuating the slidable lamina of saidported panel for damping the tones of said piano-accordion.

Vll. ln a piano-accordion; all metal treble and bass housings and a bellows connected therewith; said treble housing embodying a base portion and a keyboard portion; a laminated ported panel built into said base portion; said keyboard portion having` bent integral portions relatively forming): a guide flange at its top, end ilanges, and a plate; termine' the lower lamina of said laminated ported panel.

Signed at Brooklyn, in the county of Kings and State of New York, this 22nd day ot' Marchv` A. D. 1932.

' REINHOLD RESCHICK.