Chain Reaction Machine T-Shirt, Patent Drawing Light Switch Contraption Tee, Funny Engineer Gift

Thirteen parts, one light switch. For the tinkerers who would rather build a chain-reaction contraption than walk across the room: a vintage patent sheet for an Apparatus for Turning On a Light, where a plunger launches a ball down a ramp into dominoes, into a funnel and chute, into a bucket that drops and pulls the switch. Alternative embodiment: use hand (not claimed).

What you get

• Front: Left-chest lit light bulb with red rays, "Fig. 10 · Apparatus for Turning On a Light · 13 Parts · Pat. Pend."
• Back: Patent sheet "Apparatus for Turning On a Light": plunger, ball, ramp, 8 dominoes, backup ball, funnel, zig-zag chute, bucket, two pulleys, light switch, lit floor lamp and wire, numbered 10–34 with a parts list
• Printed with premium DTF transfers and heat-pressed by hand in Charleston, SC

Choose your shirt

• Comfort Colors 1717: heavyweight 6.1 oz garment-dyed cotton, relaxed fit (S–3XL)
• Bella+Canvas 3001: lightweight 4.2 oz Airlume cotton, softer retail fit (S–3XL)

Colors may vary slightly by screen.

Care

Wash inside out in cold water, tumble dry low or hang dry, don't iron the print.

Production & disclosure

Designed by Elevated Designs LLC using digital design tools, with AI assistance. Printed and pressed to order in Charleston, SC.

Over-Engineered Co. · engineers of every discipline — designed by Elevated Designs and printed to order in Charleston, SC.