US Patent: 887,502
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| Internal Combustion Engine
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Patentee:
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| Walter J. McVicker (exact or similar names) - Alma, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 02, 1907 |
| Granted: |
May 12, 1908 |
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Joel Havens
"Vintage Machinery" entry for Alma Manufacturing Co.
"Vintage Machinery" entry for Canadian McVicker Engine Co., Ltd.
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Description: |
| Abstract:
My invention pertains to internal combustion engines and relates more particularly to means for controlling the exhaust valve by the force or through the influence of the pressure in the main cylinder of the engine.
The object of my invention is to provide simple and efficient mechanism for controlling or operating the exhaust valve at the proper moment, that is after the ignition or explosion has taken place in the main cylinder, which mechanism is actuated by an operating connection with the main shaft and which is controlled in its action by the pressure in the main cylinder.
My invention also contemplates, in connection with said exhaust valve operating mechanism suitable means for operating a fuel pump which is operated simultaneously with said mechanism and is also capable of independent manual operation when it is desired to supply the carburetor with fuel when the engine is at rest.
Claims:
l. In an internal combustion engine, the combination, with the engine cylinder and its exhaust valve and with the shaft driven by the engine, of a valve operating rod normally out of operative relationship with the exhaust but responsive to the pressure in the engine cylinder and adapted to be placed in operative relationship after ignition or explosion in such cylinder, a bell-crank to Which one end of the rod is pivoted, a cam mounted on said shaft and arranged to rock the bell-crank, and means for holding such bell-crank towards the cam with a yielding pressure.
2. In an internal combustion engine, the combination, with the engine cylinder and its exhaust valve and with the shaft driven by the engine, of a valve operating rod normally out of operative relationship with the exhaust but responsive to the pressure in the engine cylinder and adapted to be placed in operative relationship after ignition or explosion in such cylinder, a bell-crank to which one end of the rod is pivoted, a cam-roller on the bell-crank, a cam mounted on the shaft and arranged to cooperate with the cam-roller and thereby rock the bell-crank, and a spring for holding the cam-roller against the cam.
3. In an internal combustion engine, the combination, with the engine cylinder and its exhaust valve and with the shaft driven by the engine, of a valve operating rod normally out of operative relationship with the exhaust but responsive to the pressure in the engine cylinder and adapted to be placed in operative relationship after ignition or explosion in such cylinder a bell-crank to which one end of the rod is pivoted, a cam-roller on the bell-crank, a cam mounted on the shaft and arranged to cooperate with the cam-roller and thereby rock the bell-crank, and a fuel pump having a plunger operatively connected with the bell-crank.
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