[Avodah] Shabbos Umbrella

[Micha Berger]

On Mon, Oct 18, 2021 at 10:33am EDT I wrote:
> RGS's daily vort today posted a link to an article by Eretz Chemdah which
> described a design for an umbrella that could be opened on Shabbos...
> See ... or https://bit.ly/3BX3ytF

R Ari Zivotofsky replied with a link to
http://www.olam-katan.co.il/%D7%9E%D7%90%D7%9E%D7%A8%D7%99%D7%9D/item/9103
in which R Barukh Efrati lists various respondants and their problems with
this umbrella with a Magein haShabbat.

Frankly, I was disappointed. The objections were about people erring and
using regular umbrellas. Or objection to overturning precedent (although
the umbrella is designed to be unlike precedent).

I mean these are all arguments that would equally apply to Machon
Zomet's work. Or a Shabbos elevator. We don't normally make such
pseudo-gezeiros. Why now? Feels to me like the DL stance was shaped more
by counter-reformation -- C and most Mesoratim allow it -- than by actual
halachic agument.


Also disappointed that my problem wasn't raised. Seems to me that even
if the umbrella is never closed but it isn't left with the canopy part
horizontal and sufficiently far from the floor, it's not an ohel. And
therefore picking it up for use would be boneh.

Tir'u baTov!
-Micha

-- 
Micha Berger                 Rescue me from the desire to win every
http://www.aishdas.org/asp   argument and to always be right.
Author: Widen Your Tent                 - Rav Nassan of Breslav
- https://amzn.to/2JRxnDF                 Likutei Tefilos 94:964