Autopiano Co. v. American Player Action Co.

222 F. 276, 138 C.C.A. 38, 1915 U.S. App. LEXIS 1458
CourtCourt of Appeals for the Second Circuit
DecidedFebruary 9, 1915
DocketNo. 118
StatusPublished
Cited by22 cases

This text of 222 F. 276 (Autopiano Co. v. American Player Action Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Second Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Autopiano Co. v. American Player Action Co., 222 F. 276, 138 C.C.A. 38, 1915 U.S. App. LEXIS 1458 (2d Cir. 1915).

Opinions

1 ACOM BE, Circuit Judge.

[1] The opinions of Judge Hand and Judge Mayer 1 set forth in detail the device of the patent and may be referred to. The apparatus of the patent relates to self-playing pianos, in which the keys are put in action by drawing a perforated note sheet transversely over a tracker bar which contains a series of apertures, each communicating by a tube to the pneumatic device for operating the corresponding striker of the note. As the perforations uncover the apertures in sequence the proper actions are successively struck in order to render the musical composition. It is of supreme importance that the note sheet register always with the tracker bar, so that each perforation will come only over the particular aperture for which it is cut. There is a tendency in playing a long piece for the note sheet to shift sideways over the tracker bar; a tendency which must be at once overcome. This is a very delicate operation, involving the attainment of accuracy in order to be commercially successful. Restoration of register may be effected, either by shifting the note sheet back to its old position, or by shifting the tracker bar to a position in proper register with the note sheet. The patent discloses and describes both methods.

The invention of O’Connor was a highly meritorious one and broadly new. The prior art contains nothing which should require it to be narrowly construed. Judge Mayer says:

•‘It undoubtedly represents the first automatic adjusting device which will maintain automatically correct lateral register between the note sheet and [278]*278the tracker bar.” “Complainant and its licensee were the first to produce a successful piano player which would operate properly all the 88 actions of a piano.”

The record abundantly sustains these findings. In the patent, original and reissue alike, what is shown is a device consisting of two bellows rnotors; each motor is operated by air rushing into it through a tube; each tube leads to an aperture in the tracker bar. When such aperture is covered by the note sheet, no air rushes in and nothing happens. When by a sidewise slip of the note sheet one of the apertures is uncovered, air enters and the bellows motor with which the aperture is connected is put in action, moving the tracker bar in one direction; such movement at once re-covering the aperture and putting that bellows motor out of commission. A shifting of the note sheet towards the other side produces similar action by the other bellows motor; one motor moving the tracker bar to the left, and the other moving it to the right. In this way a perfect register is' maintained throughout the entire forward movement of the note sheet, and the note apertures always register with note perforations.

The claims here in controversy are these:

3. The combination with the marginal surface of a traveling sheet, or web, of means for guiding or restoring the web to its normal path when diverted therefrom, a tracker bar, and means contacting with the marginal surface.of the web and held out of operation when the web is in its normal position, for inaugurating the operation of the guiding means.
5. The combination, with a traveling sheet or web, of a tracker bar and means, maintained in inoperative condition by the sheet when in its normal position, for restoring the normal relation of the sheet and the tracker bar when uncovered by the edge of the sheet.
8. In a web-driving apparatus, means for restoring the web and the apparatus into normal relations when deflected therefrom, consisting of rolls for guiding the web, and a tracker bar provided with an aperture adjacent to and wjthin the normal position of the web so as to be covered thereby, and pneumatic devices, the operation of which is inaugurated by the uncovering of the aperture, for restoring the web or the tracker bar to normal position.
10. The combination, with a traveler sheet or web, of a tracker bar, and means, maintained in inoperative condition by the sheet when in. its normal position, for restoring the normal relation of the sheet and the tracker bar when uncovered by the sheet.
21. The combination of a tracker bar having a series of music apertures, means for drawing a perforated note sheet forward over the tracker bar, a pneumatic control opening appurtenant to the trackei bar and arranged so that a lateral deviation of the note sheet will change its condition, a pneumatic motor connected to adjust the lateral relation between the note sheet and tracker bar, and connections between said control opening and said, pneumatic motor arranged so that, when a lateral deviation of the note sheet changes the condition of the control opening, the pneumatic motor will operate to-restore the normal lateral relation between the tracker bar and note sheet before the forward run of the note sheet in abnormal lateral position can produce discord.
22. The combination of the tracker bar having a series of music apertures,, means for drawing a perforated note sheet forward over the tracker bar, a pneumatic guide opening appurtenant to the tracker bar and arranged so that a lateral deviation of the note sheet will uncover the same, a' pneumatic motor connected to adjust the lateral relation between the note sheet and tracker bar, and connections between said guide opening the said pneumatic motor, arranged so that, when a lateral deviation of the note sheet uncovers the guide-opening, the pneumatic motor will operate to restore the normal lateral rela-[279]*279fton between 1be tracker bar and note sheet before the forward run of the note sheet in abnormal lateral position can produce discord.

Claims 3, S, 8, and 19 are identical with claims similarly numbered in the original patent.

Tile defendant uses one bellows motor, instead of two, as shown in O’Comior’s description and drawings. This bellows motor is operated iu one direction or the other by pneumatic action — in one direction by pneumatic pressure directly; in the other by the expansion of a spring, which has been contracted by pneumatic pressure. Defendant has one aperture only, because it has only one bellows to move, and contends that it has avoided infringement by dispensing with the second bellows and aperture.

We arc satisfied that infringement is not avoided by this simple change, since the patent is a pioneer one, entitled to a liberal construction and a broad range of equivalents. If part of a combination is stated to be a square table on four legs, and neither the shape of the table nor the number of legs is a matter of any importance, so long as the table is large enough and is maintained in a horizontal position, a triangular table on three legs would be an equivalent of the element specified. The defendant’s double bellows is in fact two bellows placed together and working by a combination of air pressure and spring alternately in opposite directions. The exact location of each of these bellows is not of the essence of the invention, so long as each performs its function of producing a correct register between the perforations in the note sheet and the note apertures in the tracker bar. None of the claims here relied on is limited to two bellows and two apertures, nor does anything in the prior art require that they should be so limited in order to save them.

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Cite This Page — Counsel Stack

Bluebook (online)
222 F. 276, 138 C.C.A. 38, 1915 U.S. App. LEXIS 1458, Counsel Stack Legal Research, https://law.counselstack.com/opinion/autopiano-co-v-american-player-action-co-ca2-1915.