GB191421796A - Improvements in or relating to Mechanical Piano Players and the like. - Google Patents

Improvements in or relating to Mechanical Piano Players and the like.

Info

Publication number
GB191421796A
GB191421796A GB191421796DA GB191421796A GB 191421796 A GB191421796 A GB 191421796A GB 191421796D A GB191421796D A GB 191421796DA GB 191421796 A GB191421796 A GB 191421796A
Authority
GB
United Kingdom
Prior art keywords
ports
bar
tracker
sets
valve
Prior art date
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
Frank Herbert Mowbray
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191421796A publication Critical patent/GB191421796A/en
Expired legal-status Critical Current

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  • Multiple-Way Valves (AREA)

Abstract

21,796. Mowbray, F. H. Oct. 30. Actions; tracker-bars.-Two sets of connexions, in reverse order between primary pneumatics, and a single row of apertures or contacts in a tracker-bar, are controlled by a device such as a multiple slide valve or switch so that either set can be rendered operative for use with tune-sheets designed for horizontal or vertical tracker-bars, and having the treble perforations respectively to the left or right of the direction of travel. In the arrangement shown, the tracker ducts a<1> are forked and communicate by parallel tubes d and by crossing tubes d<1> with two sets of ports b<4>, b<5> in a bar b<1>. This bar is carried by a radius-arm and a lever e so that either set of ports can be caused to register with a single set of ports in a bar b<2>, the latter ports being connected to the primary pneumatics. In a modification, the movable valve bar b<1> has a single set of ports, and the stationary bar b<2> two sets of ports, each primary pneumatic having a forked connecting-nipple. A disk valve may replace the valve described. An analogous arrangement, with contacts instead of ports, may be employed in electrically-controlled instruments. According to the Provisional Specification, the tracker-bar may have two sets of ducts.
GB191421796D 1914-10-30 1914-10-30 Improvements in or relating to Mechanical Piano Players and the like. Expired GB191421796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191421796T 1914-10-30

Publications (1)

Publication Number Publication Date
GB191421796A true GB191421796A (en) 1915-10-28

Family

ID=32586688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191421796D Expired GB191421796A (en) 1914-10-30 1914-10-30 Improvements in or relating to Mechanical Piano Players and the like.

Country Status (1)

Country Link
GB (1) GB191421796A (en)

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