US439397A - gildersleeve - Google Patents

Description

(No Model.) I 4 Sheets-Sheet 1. J. GILDERSLEEVE.

ORGAN.

No. 439,397. Patented Oct. 28, 1890.

(No Model.) 4 SheetsSheet 2.

J. GILDERSLEEVE.

ORGAN.

N0. 439,397. latented Oct. 28, 1890.

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J. GILDERSLEEVE.

ORGAN.

No. 439,397. Patented Oct. 28, 1890.

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(No Model.) 4 Sheets-Sheet 4. J. GILDERSLEEVE.

ORGAN.

No. 439,397. Patented Oct. 28, 1890.

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UNITED STATES PATENT OFFICE.

JOSEPH GILDERSLEEVE, OF LONDON, ENGLAND, ASSIGNOR TO JOHN TREADWAY HANSON, OF SAME PLACE.

ORGAN.

SPECIFICATION forming part of Letters Patent No. 439,397, dated. October 28, 1890.

Application filed February 26, 1890- Serial No. 341,802. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH GILDERSLEEVE, a subject of the Queen of Great Britain, residing at London, England, have invented new and useful Improvements in and relating to Organs, of which the following is. a specification.

This invention relates, chiefly, to the construction of a chamber pipe-organthat is to say, an organ suitable for a drawing-room as it will occupy no more floor-space than an ordinary cottage-piano.

In my improved organ all the notes of the instrument are organ-pipes, and are voiced to sound Well in a drawing-room.

In order to enable my invention to be fully understood, 1 will describe how it can be carried into practice by reference to the accompanying drawings, in which Figures 1 and 2 are a front and side elevation, respectively, of a chamber pipe-organ constructed according to my invention and having three stops of pipes, forming four draws. Fig. 3 is a central vertical section of the organ; and Fig. 4c is a front sectional elevation of the same, the section being taken on the line at aof Fig. 3. In this figure the pipes and'pallets are shown removed for the sake of clearness. Fig. 5 is a section of the lower part of the front of the swell-case, and Fig. 6 is an elevation of a part of the same.

Similar reference-letters indicate similar parts throughout the drawings.

I11 carrying out my invention I employ a wood case a, Figs. 1 to 4, closed up to a height slightly above the level of the key-board Z), the top forming the sound-board c, on which can be placed a series of stops of pipes. In the drawings two stops of pipes are shown so placed, the said stops being marked d and 6, respectively. All the pipes are placed in the natural order of the scale, as shown clearly in Figs. 1 and 2, in which figures the pipes represent portions of the stops (1 and 6. By this arrangement the pallet g of each pipe is nearest to the key 9' which operates it, whereby I do away with the usual roller-board (which is part of the action of an ordinary organ) and make the action as direct or quick and easy as that of a piano, and also economize space and expense.

71 is the swell-case which I arrange to form the back portion of the top of the instrument. On the front of the swell-case and facing the key-board I place the swell-shutters h, which can be operated in the usual manner by the knee of the performer through the medium of a lever 72?, lever k rod h cranks 71 71 and rod 71 The whole of the lower partof the case a is, nearly up to the level of thekey-board, utilized for the bellows t', as shown clearly in Fig. 3, the feed being worked by two pedals t" t" in the usual manner. An escapement-valve of the usual construction is provided to relieve the bellows when fully inflated. This valve is not shown in the drawings.

Immediately over the bellows, at the back portion of the instrument, is located the sound-board j, on which stands the third stop of pipes j, inclosed in the swell h. The soundboard 7' may be at any convenient level below the sound-board c of the front pipes, so as to allow of employing any required height of pipes j.

The two stops of pipes (Z and e are worked with slides k and Z in the ordinary manner that is to say, horizontally and immediately under the pipesthe stop cl being worked by the slide 7t and the stop 6 by the slide Z and another slide, (not shown,) the two slides corresponding with the two portionsviz., base and treble-into which the said stop 6 is divided; but according to my invention the swell-pipes are worked by a slide 111, placed vertically at the back of the divisions over each pallet and at a right angle to the top of the sound-board All these slides draw with hit-and-miss holes in the usual manner, and are connected to the draw-rods a through the medium of levers n, rods a and bell-cranks of. There being but one set of pallets g, the wind has to be conveyed to the swell-pipes, and I effect this by forming the fines or airconveyers in the thickness of the material of the front of the swell-case in the following manner:

The lower part of the front of the swell-case h is made in three thicknesses, as shown ato 0' 0 in Figs. 3 and 5, the inner thickness 0 having marked on it the lines of flues, which take the direction that the ordinary metal airconveying pipes would take. These are afterward cut out in any suitable mannersucl1 as by means of a fret-sawas shown at p in Fig. 6, which represents an elevation of a portion of the said thickness. The thickness 0' is then glued between the two other thicknesses 0 and 0 of suitable 1naterialsuch as veneers of hard woodand holes q are pierced where required at the ends of the flues 19 within. These holes correspond with holes 1' in the draw-slide m of the swell-stop and also with fiues s in the sound-board j, which is also made in three thicknesses with the flues s in a similar manner to the lower part of the front of the swell-case.

s, 8 and s indicate the thicknesses of the sound-board j, the flues being formed in the thickness 5 and connected to the pipes j by holes 9' It will be obvious that the flues pandsmay be cut to any curve, thereby ofiering less resistance to the wind than the ordinary jointed air-conveying pipes do, quicker action being given and a saving of space effected, the wood case of the swell hitself serving the same purpose as a bulky part of the action of an ordinary organ; also, more room is left for the pipes to speak in, in proportion to the slze of the organ.

It willbe understood that my improvements are in part applicable to other pipe-organs than chamber pipe-organs.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a pipe-organ, air-conveying channels for the swell, formed in the thickness of the material of the front of the swell-box, in the manner and for the purposes substantially as described.

2. In a pipe-organ, air-conveying channels formed in the front of the swell-box, com bined with a slide, such as m, for admitting air to the swell, substantially as described.

3. In a pipeorgan, air-conveying channels formed in the front of the swell-box, combined with corresponding ones made in the sound-board, substantially as set forth.

JOSEPH GILDERSLEEVE.

Witnesses:

G. F. REDFERN, JOHN E. BOUSFIELD, Of the firm of G. F. Redfe'm & 00., 4S0uth Street, Finsbury, London, Patent Agents.

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