Project description
I'm looking for an experienced installer to build and install a small mechanical dumbwaiter connecting my kitchen on the main floor to the pantry and mudroom in the basement, roughly nine feet of vertical travel between the two landing openings.
The project starts with framing a proper enclosed shaft through the floor cavity — doubled joists around the rough opening, fire-rated wall board on all four sides of the shaft, and a level, plumb guide rail track running from top to bottom. The cabin itself should be a stainless-steel-lined box sized for grocery bags and laundry baskets, roughly 24 by 24 by 30 inches, rated for at least 100 pounds of load.
Lifting is done with a geared electric winch and steel cable on a counterweight system, controlled by a simple call-and-send button station at each landing. Both landing doors need mechanical interlocks so the cabin cannot move unless every door is fully closed and latched, and no door can open unless the cabin is level with that landing — this is the non-negotiable safety requirement.
A licensed electrician should tie the winch motor into a dedicated 20-amp circuit with its own breaker, and the control wiring between landings needs to run inside the shaft wall. I'd like the finished landing doors to match the existing kitchen and basement trim.
Please quote shaft framing, cabin fabrication, winch and rail installation, door interlocks, and final safety testing, and let me know your typical timeline from contract to first working test run.
The project starts with framing a proper enclosed shaft through the floor cavity — doubled joists around the rough opening, fire-rated wall board on all four sides of the shaft, and a level, plumb guide rail track running from top to bottom. The cabin itself should be a stainless-steel-lined box sized for grocery bags and laundry baskets, roughly 24 by 24 by 30 inches, rated for at least 100 pounds of load.
Lifting is done with a geared electric winch and steel cable on a counterweight system, controlled by a simple call-and-send button station at each landing. Both landing doors need mechanical interlocks so the cabin cannot move unless every door is fully closed and latched, and no door can open unless the cabin is level with that landing — this is the non-negotiable safety requirement.
A licensed electrician should tie the winch motor into a dedicated 20-amp circuit with its own breaker, and the control wiring between landings needs to run inside the shaft wall. I'd like the finished landing doors to match the existing kitchen and basement trim.
Please quote shaft framing, cabin fabrication, winch and rail installation, door interlocks, and final safety testing, and let me know your typical timeline from contract to first working test run.
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