hinged at one end, also be kept in its place by a spring in the manner of a clasp knife. The valves r and their levers are arranged in a compartment q hermetically separated from the rest of the inside space of the instrument, and communicating with the outer air by the holes g, g1, g2, g3, &c. In case a piece of music be too long for one disk, a number of semi-circular disks A, B, C, &c., Figs. 6 and 7, may be used, each of which contains a part of the notes, and which may be inserted into the instrument one after the other without interrupting the playing. The bar f with the grate e is in this case by preference made of a length as not to reach to the centre of the plate b, as otherwise it would prevent, or at least render difficult the exchange of the disk-parts. In perforated music sheets of all kinds it is desirable that the perforations for the lower notes have a comparatively greater length than those for the higher ones. Considering that in the circular disk the length of the perforations for notes of the same duration must be in proportion to the distance of these perforations from their centre of rotation, the disk presents the advantage that the aforesaid condition will be naturally fulfilled simply by the arrangement of the reeds and the valves in such a manner that the outer perforations will correspond to the lower notes, the inner ones to those of higher pitch. In order to reduce as much as possible the diameter of the disk, the valve-levers d must be brought together as close as possible. To this effect the reeds or pipes h are placed in vertical ranges, but each reed or pipe is shifted laterally by so much in respect to the one which is below or above it, as is required for allowing the valve-levers to pass freely by the side of each other. For the purpose of reducing the requisite lift of the valves, I prefer to provide each pipe or reed with two air-holes as shown in section by Fig. 1, and in front view by Fig. 3 x, or with three holes as in Fig. 3 y, and to form the valve of as many separate bars, each of which is adapted to cover one of the said holes. The valves may also be arranged in the manner of slide-valves, and in some cases two valves may be connected together in order to produce double notes; see Fig. 3 z. In Figs. 3 2 and 3 y is also shown the relative posi Claims preforated disk. Combination. tion of the air-holes of the different reeds, I, II, III being the first range, IV, V, VI the second, &c. The reeds h communicate with the main chamber T of the instrument. This chamber is hermetically closed and contains the bellows k, k1 and the driving mechanism. The air sucked in by the said bellows is delivered into the chamber T, with which is combined the regulating bellows 7. The bellows k, k1 may, however, also operate in the contrary manner by sucking the air from the chamber T; the pipes or reeds and the regulating bellows having, in this case, of course to be arranged accordingly. Having thus described the nature and object of my invention and the manner in which it is to be carried out in practice, I hereby claim as new and important features of the same : 1. In a mechanical musical instrument, the rotative music sheet a, consisting of a disk perforated in accordance with the notes to be produced, and co-operating with the valve-levers d, substantially as and for the purpose described. 2. The combination with the valve-levers d of a perforated disk consisting of two parts A and B, either of which may be exchanged, as and for the purpose specified. IN WITNESS whereof, I, &c. C. D. of day of 188 and E. F. of An Agreement made this Between A. B. of hereinafter called the vendors of the first part, and X. Y. of bereinafter called the promoter of the other part. Whereas the vendors are the owners of certain letters patent dated and numbered for an invention entitled And whereas it is intended that the promoter shall procure forthwith the incorporation by registration under the Companies Acts, 1862 to 1883, of a company to be called Limited, and that the vendors shall for the considerations hereinafter mentioned sell and assign the said letters patent to the said Limited. And whereas a print of the memo Limited has randum and articles of association of the 1. The promoter shall and will forthwith procure the incorporation under the above-mentioned acts of the said Limited, and shall and will duly register as the memorandum and articles of association of the said company the memorandum and articles of association hereinbefore referred to and which are set forth in the schedule hereto. 2. With as little delay as possible after incorporation the vendors shall execute and the said promoter shall execution by the said procure the Limited of a contract similar to that set forth in the schedule hereto or such other contract as Limited shall agree upon. the parties hereto and the 3. If the promoter shall not before the day of 188 perform his part of this agreement, then it shall be lawful for the vendors or either of them to determine the same by giving notice in writing of such determination to the proLimited shall at that time have Limited. moter, and if the said been incorporated also to the said SCHEDULE. Recital of above agreement. to assign. Payment of cash and allotment of shares. Assignment subject to licences, &c. 2. Agreement to Assign to the Company. An Agreement made this day of C. D. of 1888, Between and E. F. of hereinafter 9 Limited A. B. of and numbered agreement dated one part and and made between the vendors of the therein called the promoter of the other, it was agreed that for certain considerations therein and herein mentioned the vendors should sell the said letters patent to the purchasers. Now it is agreed as follows: 1. The vendors shall upon the completion of the purchase as hereinafter provided for, assign unto the purchasers the said letters patent and all the right, title and interest of the vendors therein, free from all incumbrances save as regards assignments for districts and licences already granted as hereinafter mentioned, and the vendors shall do all things necessary and execute all documents necessary for rendering the said assignment valid and effectual. 2. The purchasers shall pay to the vendors on or before the day of the sum of £ in cash, and shall allot to the vendors or to such other person or persons as the vendors shall nominate fully paid up shares in the vendors' company, and immediately upon such payment being made and the said shares being allotted the vendors shall assign the said letters patent as in the first clause hereof provided. 3. The said assignment shall be subject to assignments for districts and licences in the schedule hereof mentioned, but such assignment shall include all the rights and benefits from time to time hereafter accruing to the vendors under or by virtue of such assignments for districts or licences. 4. The vendors do not warrant or represent the validity of No warranty the said letters patent. of validity. 5. Should the said purchase price not be paid or the shares Determination not be allotted on or before the said day of the upon default. vendors shall be entitled to interest upon the said purchase price and upon the nominal value of the said shares after the rate of 5 per cent. per annum until payment and allotment, or at their option to determine this contract by notice under their hands delivered at the registered office of the company. Provided always that the vendors shall not be entitled to sue for or recover damages against the purchasers in respect of the breach of the said agreement. 6. The said A. B. shall be deemed the agent of the said C. D. and E. F. for the purpose of receiving the said purchase money and shares and giving an effectual discharge for the same. SCHEDULE. AGREEMENT TO OBTAIN AND ASSIGN LETTERS PATENT FOR day of Between Parties. An Agreement made the (inventor) of, &c., of the one part and (purchaser) of, &c., of the other part. Whereas the said (inventor) claims to have invented a new and improved kind of , a plan or drawing of which is hereunto annexed. And whereas the said (pur- Agreement to chaser) has arranged with the said (inventor) for the sale to obtain and assign patent. him of the benefit of the said invention in the manner and upon the terms hereinafter expressed. Now Witness that in Recital of consideration of the sum of £ to the said (inventor) now invention. Testatum. paid by the said (purchaser) the receipt whereof is hereby In consideraacknowledged and also in consideration of the agreements tion of a sum hereinafter contained on the part of the said (purchaser) he and of the purchaser's covenants, (k) Extracted by permission of the publishers from Bythewood and inventor Jarman's Conveyancing. |