Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
William Henry Grimsdale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB191311937ApublicationCriticalpatent/GB191311937A/en
11,937. Grimsdale, W. H. May 22. Drawings to Specification. Tune-sheets.-Relates to tune-sheets having. apertures, the areas of which vary according to the loudness of the notes to be sounded, for use with actions such as those described in Specifications 4942/08 and 14,630/12. According to the present invention, compound tunesheet apertures are employed comprising for each note a note-sustaining portion, consisting of a line of small perforations close together, and preceded by a note-striking portion consisting of one or more large perforations, the length and width of which varies in accordance with the loudness of the note to be sounded. The note-sustaining portion may consist of a continuous perforation instead of a line of small perforations. Specification 8349/10, [Class 31 (ii), Punching &c.], is referred to.
GB191311937D1913-05-221913-05-22Improvements in Music Sheets for Mechanical Piano Players.
ExpiredGB191311937A
(en)
Improvements in the manufacture of drilled paper rolls for playing music, applicable to pianist devices, pianos combined with devices, harmoniums, organs and other keyboard instruments.