| Diameter: | 7 | cms |
| Height: | 4.5 | cms |
| Recess Depth: | 2.5 | cms |
| Item uid: | 3869 | |
| Availability: | 1 | |
| Price: | £45 |
tags: <bakelite>
latest links
Categories
Free Software
This site is developed, hosted and maintained exclusively using free to use and open source software (FOSS)
Shopping Cart
We are a secure site
silburyantiques.com now operates site wide SSL/TLS Click the link below to find out how we protect your personal information.
We Are Buying
All our usual opportunities for acquiring stock have for obvious reasons been cancelled or postponed indefinitely. If you have some items you think we would be interested in then send images to dls@silburyantiques.com in the first instance. We will then contact with an offer. All transactions Will be undertaken at the appropriate distance.
Latest News
18 Jan 2021 20:26:54
Free postage
We continue to offer free postage to all UK
addresses on all orders with value £30.00.
or more.
International
We are always delighted to hear from our international customers.
Please click here for important info before ordering.
Feedback
Please feel free to leave feedback
on any aspect of your experience.
You can leave
feedback here
or anywhere you see the @ feedback icon.
Feedback is cached for preview to prevent
inappropriate content appearing on the website.
Feedback is completely anonymous.
Thank you.
Thank you.
Bakelite Time Delay Switch, Collectors Item
|
This was sold to us as a bell push. Fortunately it is much more interesting than that. What it is is a time delay switch. Fully depress the brass plunger and over the next 25 to 30 seconds it gradually returns to its original position. When the plunger is pressed home a spring loaded arm completes the circuit. When the plunger reaches the top of its travel it pops up therby lifting the spring loaded arm and breaking the circuit. We have no idea if this is still legal to use today, altough the mechanism is about as simple as it can be. If you intend to use this for its original purpose, please consult a suitably qualified electrician. The above not withstanding, this is sold as a purely decorative collectors item.
|
