GB191214630A - Improvements in and relating to Mechanical Piano Players and like Instruments. - Google Patents
Improvements in and relating to Mechanical Piano Players and like Instruments.Info
- Publication number
- GB191214630A GB191214630A GB191214630DA GB191214630A GB 191214630 A GB191214630 A GB 191214630A GB 191214630D A GB191214630D A GB 191214630DA GB 191214630 A GB191214630 A GB 191214630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bellows
- valve
- air
- note
- duct
- 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
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
14,630. Grimsdale, W. H., and Grimsdale's Patents, Ltd. June 22. Actions; expression-controlling; tracker-bars. -Relates to expression-controlling means of the kind described in Specification 4942/08, in which tune-sheet apertures of varying widths admit air to dash-pots or bellows connected to the note-operating pneumatics. According to the present invention, the dash-pots or bellows are normally controlled through valves from the tracker-bar. Means are provided for admitting air to the dash-pots or bellows through manuallyoperated valves. A tune-sheet aperture registers first with the duct f and subsequently with the duct b to operate the primary and secondary valves c, d in the usual way. The note-operating pneumatic e therefore collapses. If the amount of air admitted to the duct f is sufficient, the bellows g expands to open the valve h and a loud note is struck. If the valve h is not opened, the pressure in the expanding bellows l falls and a soft note is struck, air being sucked into the channel k through the bleed-hole q. The size of the bleedhole q may be adjustable. The loudness of the note sounded is determined by the lift of the valve h and therefore by the width of the tunesheet aperture. A valve m may be provided to release the air in the bellows l on the upward stroke. To accentuate a note manually, a valve may be provided to admit air to the bellows l. Alternatively, air may be admitted to the tracker-pipe in connexion with the duct f by opening the rocking valve p controlling the duct o. The valve p may control one or several notes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191214630T | 1912-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191214630A true GB191214630A (en) | 1913-02-27 |
Family
ID=32641586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191214630D Expired GB191214630A (en) | 1912-06-22 | 1912-06-22 | Improvements in and relating to Mechanical Piano Players and like Instruments. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191214630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017759A (en) * | 1988-06-17 | 1991-05-21 | Bimak S.P.A. | Steam producing machine with improved delivery nozzle especially for heating beverages and rising foam therein |
-
1912
- 1912-06-22 GB GB191214630D patent/GB191214630A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017759A (en) * | 1988-06-17 | 1991-05-21 | Bimak S.P.A. | Steam producing machine with improved delivery nozzle especially for heating beverages and rising foam therein |
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