Rif Shabbat 47b {Shabbat 122b continues ... 124a}

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47b

{Shabbat 122b continues}
[FOOD] UPON IT FOR A CHILD, A REED OR A WHORL TO STICK [FOOD], A SMALL NEEDLE TO REMOVE A THORN, AND A SACK [NEEDLE] TO OPEN A DOOR THEREWITH.

Gemara:
This hammer, whether a nut hammer, whether a smith's hammer, and whether a goldsmith's hammer {one may use}, but a spice [hammer] is forbidden, as Rabbi Chiyya bar Ashi cited Rabbi Yochanan, since one is particular about them he appoints a [special] place for them, just as dyer's pins, tubs, and beams, which Rav Chinena bar Shelemia cited Rav that all agree regarding dyer's pins, tubs, and beams that since one is particular about them he appoints a [special] place for them.

Yerushalmi: zayri {pins} - that he presses with; mezori {translated above as tubs} - that he beats with; and maychi {beams} - these are pegs.

"A REED OR A WHORL {TO STICK [FOOD]}...":
The Sages learnt {in a brayta}: If an unripe fig was hidden in straw, or a cake which was hidden in live coals, and part thereof is uncovered, it may be handled; but if not, it may not be handled.
{our gemara: Rabbi} Eleazar ben Taddai says: One impales them on a reed or a whorl, and they [the straw or coals] are shaken off of their own accord.
Rav Nachman said: The halacha is as {our gemara: Rabbi} Eleazar ben Taddai.

"A SMALL NEEDLE TO REMOVE A THORN":
This needle (how so?) refers to a complete needle, but a needle with the eye or the point removed, it is forbidden to move it, like Rava.

Causing a new-born babe to vomit {by inserting the finger in its mouth in order to relieve it of its phlegm -- so Jastrow. Rashi renders: To manipulate and ease a child's limbs} on Shabbat, Rav Nachman forbids and Rav Sheshet permits.
And we have established that the halacha is like Rav Nachman with regard to dinim and like Rav Sheshet in prohibitions {and so the halacha is like Rav Sheshet}.

{Shabbat 123b}
MISHNA:
A CANE FOR OLIVES {used for stirring a mass of maturing olives to see whether they are fit for pressing}, IF IT HAS A BULB ON TOP {closing one end of the reed}, IS SUSCEPTIBLE TO DEFILEMENT; IF NOT, IT IS NOT SUSCEPTIBLE TO DEFILEMENT.
IN BOTH CASES IT MAY BE HANDLED ON THE SABBATH.

R. JOSE SAID: ALL UTENSILS MAY BE HANDLED, EXCEPT A LARGE SAW AND THE PIN OF A PLOUGH.

{Shabbat 124a}
ALL UTENSILS MAY BE HANDLED WHETHER REQUIRED OR NOT REQUIRED.
R. NEHEMIAH SAID: THEY MAY BE HANDLED ONLY WHEN REQUIRED.

{Shabbat 123b}
Gemara:
Rav Nachman said: A fuller's trough {uchla deketzari} is like the pin of a plough.