Difference between revisions of "3M"
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==Signal Enlargers== | ==Signal Enlargers== | ||
| + | Signal enlarges are attachments mounted on a door that expand to fit a larger lens. Around the early 60s, larger signal indications were becoming more popular because visibility was becoming a more of a concern. Installing enlargers on a signal was cheaper and easier than replacing it.<br> | ||
| + | 3M made 3 lines of signal enlargers; for vehicle signals, round-lens pedestrian signals, and square-lens pedestrian signals. | ||
===Vehicle Signal to Vehicle Signal=== | ===Vehicle Signal to Vehicle Signal=== | ||
| − | |||
| − | + | ====SA-812==== | |
| − | ====SA- | + | The enlarger mounts where the visor would go on the signal's door. It is essentially a box that expands around an 8-inch lens to fit a door with a 12-inch lens.<br> |
| + | The signal's original 8-inch lens is replaced with a glass diffusing lens. The enlarger is attached in the place of the visor. It is octagon-shaped where it attaches to the door; as it extends outward, the slanted sides (which are triangle-shaped) and become the corners of the square-shaped front. A square lens slides into the lens holder/front door of the unit, which has a 12" circular hole for the indication to shine through. The door then simply slides into place on the front of the enlarger. <br> | ||
| + | With this setup, the light shines through the 8" lens, into the enlarger and out the 12" lens, generating a larger and more visible indication with the same amount of light and without having to replace the signal. | ||
| + | 3M specifically noted that these enlargers would not fit [[Eagle]] Durasig signals or any [[Traffic Signals, Inc.|TSI]] signals. They also offered special clips to use when mounting on Crouse-Hinds signals. | ||
| + | ====SA-810==== | ||
| Line 66: | Line 71: | ||
===Pedestrian Signal to Pedestrian Signal=== | ===Pedestrian Signal to Pedestrian Signal=== | ||
| − | ====SA- | + | ====SA-912==== |
| − | ====SA- | + | ====SA-910==== |
==Signs== | ==Signs== | ||
Revision as of 03:30, 12 December 2013
Some really random text about 3M's traffic division here. (Also, be sure to reference that they made a bi-modal, time-programmable sign, too!)
This page is a work in progress!
Contents
3M Brand
Overview
Past
Current
Products
Programmable Visibility Signals
Vehicle Signals (12")
M-123 Programmable Visibility Prototype Signal
M-131 Programmable Visibility Signal
M-131R Bimodal (Ball/Arrow) Signal
M-133 Dual-Indication (Green/Yellow) Signal
Pedestrian Signals (12")
M-131 P.V. Pedestrian Signal
M-132 Dynamic Pedestrian Signal
Programmable Visibility Adapters/Converters
Vehicle Signal Adapter (8")
SA-130 (Adapter attachment)
Vehicle Signal Converter (12")
M-150 (Lens/Reflector System)
Signal Enlargers
Signal enlarges are attachments mounted on a door that expand to fit a larger lens. Around the early 60s, larger signal indications were becoming more popular because visibility was becoming a more of a concern. Installing enlargers on a signal was cheaper and easier than replacing it.
3M made 3 lines of signal enlargers; for vehicle signals, round-lens pedestrian signals, and square-lens pedestrian signals.
Vehicle Signal to Vehicle Signal
SA-812
The enlarger mounts where the visor would go on the signal's door. It is essentially a box that expands around an 8-inch lens to fit a door with a 12-inch lens.
The signal's original 8-inch lens is replaced with a glass diffusing lens. The enlarger is attached in the place of the visor. It is octagon-shaped where it attaches to the door; as it extends outward, the slanted sides (which are triangle-shaped) and become the corners of the square-shaped front. A square lens slides into the lens holder/front door of the unit, which has a 12" circular hole for the indication to shine through. The door then simply slides into place on the front of the enlarger.
With this setup, the light shines through the 8" lens, into the enlarger and out the 12" lens, generating a larger and more visible indication with the same amount of light and without having to replace the signal.
3M specifically noted that these enlargers would not fit Eagle Durasig signals or any TSI signals. They also offered special clips to use when mounting on Crouse-Hinds signals.
