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
Links
Landscapes
- 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.
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) |
-
1914
- 1914-10-30 GB GB191421796D patent/GB191421796A/en not_active Expired
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