Fire Alarm Testing - Old IBM/Simplex System

This is a pull station test at the same school as shown with the "Old School" IBM fire panel. You will see when the pull station is opened the alarm rings four rounds and then stops. The 8" tan bell is the one you hear ringing.

The bell to the left still works but does not sound with the building alarm. To ring it, you have to yank down on the pole with force and it will "ding" once (and very loud.) There is a plunger mounted right above the bell that is spring loaded; when yanking on the pole, it releases the spring's tension which then makes the plunger smack the bell. The pole goes down through the floor which connects to a bell in the same location in the hall underneath it and will make that bell "ding" as well. This was how they did it in the early days when they were starting to input "fire gongs" in school buildings.

Ignore the screaming little kid; he was due for an ass beating.

Category:

Science & Technology

Tags:

• Fire
• Alarm
• Bell
• IBM
• Simplex