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#watertower

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winchester, massachusetts
september 1959

tannery fire

https://www.flickr.com/photos/dboo/51895331609
https://www.flickr.com/photos/dboo/16961179880/

part of an archival project, featuring the photographs of nick dewolf

© the Nick DeWolf Foundation
Image-use requests are welcome via nickdewolfphotoarchive [at] gmail [dot] com

#photography #film #blackandwhite #bw #winchester #boston #massachusetts #tannery #beggsandcobb #fire #smoke #watertower #1950s

Even if DCC promises that you need only two wires for your whole layout, of course they are going to be in the way. I had made a cut-out in the water tower base to avoid moving the bus wires. However, there was no way to steer clear of the wire for my under-layout desk lighting, and a couple of frog wires. I made a big hole in the joist to accommodate them along with any reasonable future cables.

The water tower base itself just barely fits between the joist and the Bullfrog turnout throw for turnout number 9. Indeed, I thought briefly that I would have to bend the leads for the limit switch. There are round holes for final screws after I’m ready to commit to the position. However, a thoughtful designer back in January made big slotted holes in the water tower base to facilitate alignment; they are even low enough that I could use a long screwdriver to get at them, rather than trying to manipulate a stubby in that confined space. That guy thought of everything!

https://pembroke87.ca/2024/10/01/installing-the-water-tower/

My goal when designing the controls for Pembroke has been to simulate the actions of real railroaders, but smaller and lighter. Real railroading is heavy, dangerous work, after all!

When it comes to the Pembroke water tower, this means there is, of course, no button. Almost nothing had a button in 1905, except for the fly of your pants. Even today, when a fireman encounters one of the few remaining operating water towers, it is a two step process. First, they must pull on a chain to lower the spout and line it up with the hatch in the tender. Often, they’ll hold it there with their foot while they pull on a rope that passes over the rim of the tank and connects to a valve at the bottom of the tank, releasing the flow of water.

On my water tank, the operator lowers the spout by pulling on a piece of chain that is connected to a fishing line. The fishing line passes beneath a plunger that is connected in turn to the spout by a thread that passes over the lip of the tank, representing the valve rope on the real tank. I considered motorizing this linkage briefly, but decided not to because I wanted the operator’s muscles to be connected to the spout. If the operator moves the chain slowly, the spout should move slowly.

To release the flow of water, the operator pulls a rope that is connected to a switch. This switch starts the sound of water and moves the slider on the linear actuator down. A second plunger rests on the slider and is connected via a magnet to the ball float. When the operator releases the rope, the switch opens and the sound of water stops. The linear actuator then slowly moves slider back to the end of its travel.

The business end of the mechanism. The brass bar supported by the fishing line is connected to the end of the spout; lowering the bar pulls the spout up. The second plunger is a piece of steel rod, barely visible behind the limit switch.

https://youtu.be/6Qyh_IPW45E?si=OxIWFZCj4nvuWUL1

https://pembroke87.ca/2024/09/24/water-tower-mechanism-in-action/

With the last gremlin exorcised from the electronics project board, I’ve turned the workbench back to physical mode. During testing, I found that the limit switch was not in fact making contact with the linear actuator. I considered hacking it, but it was easier to tweak the design of the bracket and print a fresh version. The new new version includes a clip to trap the motor wires, and I also printed some additional clips to tame the wires on their way to the board. Once the linear actuator and its limit switch were secured by a couple of M3 screws, I captured all the wires under the clips and hot-glued the clips to the base structure. A little tidiness almost makes it look as if I know what I’m doing.

https://pembroke87.ca/2024/09/21/water-tower-electronics-installed/