US2535645A - Organ pipe assembly - Google Patents

Description

Dec. 26, 1950 c. w. MMANIS ORGAN PIPE ASSEMBLY Filed Dec. 8, 1947 Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE ORGAN PIPE ASSEMBLY "Charles -W. Mcllianis, Kansas city, :Kans. Application Decembcr'S, 1947,Serial No. 790,332

16 Claims. 1

This invention relates to new and useful improvements in an organ pipe assembly, and has as its principal object the provision of a simpler, more easily manufactured pipe providing greater ease and speed of tonal regulation than is possible in the ordinary organ pipe.

In traditional pipe organ construction, each pipe consists principally of three parts, a conical tubular foot adapted to receive air at its smaller end from a windchest, a tubular pipe or resonator secured to the larger end of the foot and having a mouth formed therein at said juncture, and a partition known as a languid separating the foot from the resonator and having a slit formed therethrough adapted to direct a sheet of air against the upper lip of said mouth to produce a tone.

An object of this invention is the provision of an organ pipe assembly wherein the resonators are structurally divorced from the foot and languid equivalents, said resonators being secured adjustably to a specially constructed chestblock which performs the foot functions for an entire bank of pipes.

Another object is the provision of an organ pipe assembly comprising a chestblock carried'on the windchest of an organ and adapted to support a plurality of resonators or pipes re'leasably and adjustably secured thereto, and individual air passages formed through said chestblock for each of said resonators adapted to direct air from said windchest to "said resonator, and a languid secured to said chestblock within each of said resonators and adapted to form in conjunction with said passage an air slit adapted to direct a sheet of air against the lip of said resonator.

Other objects are simplicity and economy of construction, flexibility of adjustment and adaptability to utilize commercial tubing, which is available in all the necessary graduations of size, without the use of conical tubes, and without welding or soldering.

With these object in view, as well as other objects which will appear in the course of the specification, reference will be had to the drawing, wherein:

Figure 1 is a fragmentary front elevation of .a bank of organ pipes, showing a pipe assembly embodying the present invention.

Fig, 2 is an enlarged fragmentary vertical section taken'on lineII-II of Fig. 1.

Fig. :3 is a fragmentary horizontal section taken on line III-III of Fig. 2.

Like reference numerals apply to similar parts throughout the several views, and the numeral 4' applies to a fragmentary showing of :anorgan 2 windchest :having a topboard 6. Air is delivered under pressure to said 'chest .by blower means not shown. An aperture 8 is formed through the top-board for each organ pipe, the apertures for each bank of pipes being disposed in a line extending transversely .across the windchest.

A chestblock is preferably having the form of an elongated plank of wood or other suitable material, is secured to topboard 6 by'any suitable means such as screws HE. A recess I4 is formed .in the lower surface of chestblock II directly above each aperture 8, said recess being disposed adjacent the rearward edge of the chestblock. Each recess 14 is interconnected by a forwardly extending passage is with a recess is formed in the forward edge of the chestblock, said last named recess opening .at both .the forward and upper surfaces of thechestblock. A slit 20 .is formed between the upper edge of a cap plate 22 fixed to the forward surface or" the chestblock and extending across re- 'cess H5, and the forward edge of a planar languid 24 fixed to the upper surface of the chestblock, said slit being adapted to direct a sheet of air upwardly from the chestblock.

A tubular pipe 26 commonly known as a resonator, is supported on chestblock I0 above each slit 2%). At its lower end each resonator has a flattened portion 28 at its forward side said flattened portion sloping inwardly as shown in Fig. 2. Said flattened portion is slit horizontally at a point above the lower end of the pipe, and the resultant strip of metal is cut vertically 'at its midpoint, the end portions of said strip then being bent outwardly to form ears St. The space =vacated by said ears forms the pipe mouth 32. The upper lip 311 of said mouth may be bevelled to a sharp edge as shown in Fig. 2.

The sheet of air passing upwardly from slit 2G crosses mouth 32 and breaks across lip 3d thereof, thus setting up .a vibration in the air column carried in resonator pipe v25 to produce a tone. Ears i serve to confine the sheet of air as it crosses mouth 32. If larger earsextending above and below mouth 32 are desired, ears may be used as anchorages for said larger ears. Tonal quality of the pipe is affected by the conformation and relative positioning of cap 2.2 and languid 24; 'Since these members are releasably secured to the chestblock byscrews or in some other manner readily lending itself to adjustment, voicin of the pipe may be .ac- .complished .much more easily and faster than in ordinary pipes requiring soldering or Welding-of the-parts.

Each pipe is provided :at its lower end with transversely extending flanges 36 as best shown in Fig. 3, said flanges adapted to be clampingly secured to chestblock l by large headed screws 38, the head of each of said screws being adapted to engage clampingly the adjacent flanges 36 of consecutive pipes 25. The lower end of each pipe is dipped in a liquid plastic which dries to a spongy consistency to form a plastic gasket 40 providing an air-tight seal between the pipe and the chestblock. With screws 38 loosened, pipe 26 may be slid forwardly or rearwardly to position lip 34 properly with respect to the sheet of air from slit 20. When the proper adjustment has been obtained, positionin pins 42 may be fixed in chestblock ID to project through holes provided therefor in flanges 36. Thereafter the pipe may be removed simply by loosening screws 38 and lifting flanges 36 from pins 42, and may be replaced accurately in position by fitting said flanges over said pins.

A volume control valve 44 is carried on a vertical screw 45 threaded through the top of chestblock ill to the rear of each pipe, said valve being adapted to cover and regulate the amount of air passing through aperture 8. An operating valve 48 is carried within windchest d in conjunction with each aperture 8. and is adapted to open or close said aperture. toward its closed position against the lower surface of windchest topboard 6 by a spring 553, and is opened by the windchest pressure exerted downwardly on diaphragm 52 whenever the pressure beneath said diaphragm is exhausted. The faces of valves A l and 48 may be provided with felt covering 54 having leather facings 56 to insure quiet, eflicient closure. Valves 48 are operable from the keyboard console of the organ by means not shown.

Thus it is apparent that a simple, economical organ pipe assembly has been produced which may be easily and rapidly adjusted, which requires no relatively expensive foot portion, which requires no soldering or welding, and which may be simply manufactured from commercially available tubing.

What I claim as new and desire to protect by Letters Patent is:

1. An organ p pe assembly comprising a chestblock mounted on the windchest of an organ and having a plurality of individual air passages formed therethrough, said air passages each communicating at one end with said windchest and formed at its opposite end to present a slit adapted to direct a sheet of air outwardly, and a tubular resonator carried by said chestblock above each of said slits, each of said resonators having an open mouth adjacent said slit and a lip adjacent said mouth over which said sheet of air breaks to produce a tone.

2. An organ pipe assembly comprising a chestblock mounted on the windchest of an organ and having a plurality of individual air passages formed therethrough, said air passages each communicating at one end with said windchest, members adjustably secured to the outer surface of said chestblock to partially close the open opposite end of each of said air passages to form a slit adapted to direct a sheet of air upwardly, and a tubular resonator carried by said chestblock above each of said slits, each of said resonators having an open mouth adjacent said slit and a lip adjacent said mouth upon which said sheet of air impinges to produce a tone.

3. An organ pipe assembly comprisinga chest- Said valve is normally urged block fixed to the windchest of an organ and 5 having a plurality of individual air passages formed therethrough, each of said air passages communicating at one end with said windchest, and opening at its opposite end at the forward and upper surfaces of said chestblock, a cap secured to the forward surface of said chestblock to cover the forward opening of said air passage, a languid secured to the upper surface of said chestblock, the forward edge of said languid being spaced apart from the upper edge of said cap to form a slit for directing a sheet of air upwardly, and a tubular resonator carried by said chestblock above each of said slits, each of said resonators having an open mouth adjacent said slit and a lip adjacent said mouth upon which said sheet of air impinges to produce a tone.

4. An organ pipe assembly comprising a chestblock mounted on the windchest of an organ and having a plurality of individual air passages formed therethrough, said air passages each communicating at one end with said windchest and forming at its opposite end a discharge slit for directing a sheet of air outwardly, a tubular resonator mounted on said chestblock above each of said slits, each of said resonators having an open mouth adjacent said slit and a lip adjacent said mouth and parallel to said slit, upon which said sheet of air impinges to produce a tone, and means for adjustably moving said resonator transversely to said slit to secure proper cutting of said sheet of air across said lip.

5. An organ pipe assembly comprising a chestblock supported on the windchest of an organ and having a plurality of individual air passages formed therethrough, said air passages each communicating at one end with said windchest and forming at its opposite end a discharge slit for directing a sheet of air outwardly, a tubular resonator mounted on said chestblock above each of said slits, each of said resonators havin an open mouth adjacent said slit and a lip adjacent said mouth and parallel to said slit, upon which said sheet of air impinges to produce a tone, flanges turned outwardly from the lower edge of said resonator on a diameter parallel to the plane of said mouth, and screws secured in said chestblock adjacent said flanges, the heads of said screws releasably securing said flanges to said chestblock, thereby permitting the adjustment of said resonator transversely to said slit to secure proper cutting of said sheet of air across said lip.

6. An organ pipe assembly comprising a chestblock mounted on the windchest of an organ and having an air passage formed therethrough communicating at one end with said windchest and forming at its opposite end a discharge slit for directing a sheet of air outwardly, and a tubular resonator adjustably mounted on said chestblock, said resonator having a mouth adjacent said slit, across which mouth said sheet of air passes to iimpinge on the upper lip thereof to produce a one.

CHARLES W. McMANIS.

REFERENCES CITED The following references are of record in the file of this patent:

2,005,867 Maag June 25, 1935

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