Claims
- 1. A process for severing a continuous web having a path of travel between a pair of parallel spaced-apart first and second carriages disposed transversely to said web and straddling the path of said web, only said first carriage carrying a severing blade, which process comprises moving said second carriage in one direction in a plane substantially perpendicularly to said web path and toward said blade-carrying first carriage to narrow the spaced-apart distance between said carriages without moving said first carriage, preventing further movement of said second carriage in said one direction during any period of time in which a relatively non-flexible, rigid object such as a human finger is disposed between said carriages, and thereafter by further movement of said second carriage in said one direction causing said blade-carrying first carriage to be moved in the opposite direction toward said web path whereby said blade is moved into severing contact with said web.
- 2. A process for severing a continuous web having a path of travel between a pair of parallel spaced-apart first and second carriages disposed transversely to said web and straddling the path of said web, only said first carriage carrying a severing blade, which process comprises pivotally moving said second carriage in one direction in a plane substantially perpendicularly to said web path and toward said blade-carrying first carriage to narrow the spaced-apart distance between said carriages without moving said first carriage, preventing further pivotal movement of said second carriage in said one direction during any period of time in which a relatively non-flexible, rigid object such as a human finger is disposed between said carriages, and thereafter by further pivotal movement of said second carriage in said one direction causing said blade-carrying first carriage to be moved in the opposite direction toward said web path whereby said blade is moved into severing contact with said web.
- 3. A process for severing a continuous web having a path of travel between a pair of parallel spaced-apart first and second carriage disposed transversely to said web and straddling the path of said web, only said first carriage carrying a severing blade, which process comprises moving said second carriage in one direction in a plane substantially perpendicularly to said web path and toward said blade-carrying first carriage to narrow the spaced-apart distance between said carriages without moving said first carriage, preventing further movement of said second carriage in said one direction during any period of time in which a relatively non-flexible, rigid object such as a human finger is disposed between said carriages, and thereafter by further movement of said second carriage in said one direction causing said blade-carrying first carriage to be pivotally moved in the opposite direction toward said web path whereby said blade is moved into severing contact with said web.
- 4. A process for severing a continuous web having a path of travel between a pair of parallel spaced-apart first and second carriages disposed transversely to said web and straddling the path of said web, only said first carriage carrying a severing blade, which process comprises pivotally moving said second carriage in one direction in a plane substantially perpendicularly to said web path and toward said blade-carrying first carriage to narrow the spaced-apart distance between said carriages without moving said first carriage, preventing further pivotal movement of said second carriage in said one direction during any period of time in which a relatively non-flexible, rigid object such as a human finger is disposed between said carriages, and thereafter by further pivotal movement of said second carriage in said one direction causing said blade-carrying first carriage to be pivotally moved in the opposite direction toward said web path whereby said blade is moved into severing contact with said web.
- 5. A process for severing a continuous web having a path of travel between a pair of parallel spaced-apart pivotally supported first and second carriages disposed transversely to said web and straddling the path of said web, only said first carriage carrying a severing blade and said first carriage being spring biased against pivotal movement toward said second carriage, which process comprises pivotally moving said second carriage in one direction in a plane substantially perpendicularly to said web path and toward said blade-carrying first carriage to narrow the spaced-apart distance between said carriages without moving said first carriage, preventing further pivotal movement of said second carriage in said one direction during any period of time in which a relatively non-flexible, rigid object such as a human finger is disposed between said carriages, and thereafter by further pivotal movement of said second carriage in said one direction causing said blade-carrying first carriage to be pivotally moved against said bias in the opposite direction toward said web path whereby said blade is moved into severing contact with said web.
Parent Case Info
This is a division of application Ser. No. 135,772 filed Mar. 31, 1980, now U.S. Pat. No. 4,295,400.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2085446 |
Dec 1971 |
FRX |
Divisions (1)
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Number |
Date |
Country |
Parent |
135772 |
Mar 1980 |
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