What are these used for

[cal67ss396]

About two years ago my grandfather passed away. By trade he was a mechanic for forty two years. I was lucky enough to get all of his hand tools.
I got numerous good ratchets and various other tools. But there has been a few that I do not know what their purpose is.

I have two of these one end on this one is 15/16 on one end and 3/4 on the other. What is the purpose of this wrench. First two pictures.

Then I have a complete set of sockets in 1/2 drive. These will not fit on standard bolts. What drive are these and what do they fit. (second two pictures.

Pictures 3 & 4 are ratcheting drives I noticed that both the MAC and the Blackhawk have similiar markings on them. Just wondered if the BH and the MAC were made by the same manufacturer.

The last picture I was just wondering what brand this breaker bar is the markings are 669 USA can anyone help me identify this. The length is approximately 24".

 

[Diesel-Mech]

The socket is an 8 point, these are most commonly used on square pipe plugs.

Stanley owns both Mac and Blackhawk so both pieces coming from the same place would not be odd.

 

[cal67ss396]

didn't realize there was a maximum of seven uploads. These are the rest of them.

 

[dmw56]

The socket end wrench with the hole is for the bolt to pass through if the nut is way down on a long bolt. Works the same as a box end.

 

[ears]

The first wrench is for valves on a cummins.

 

[Lomotil]

The socket is an 8 point, these are most commonly used on square pipe plugs.

+1.

If this set was your grandfather's, chances are he might've used it on other things, too. Before the 6-pt nut was widely adopted, most nuts were square headed. That 8-pt socket would be the equivalent of a 12-pt today.

According to my neighbor, an old ranch-hand/mechanic, wagons and buggies were the last things he recalls seeing square nuts on, except for some later manufactured machines from Mexico.

 

[Zrexxer]

Stanley owns both Mac and Blackhawk so both pieces coming from the same place would not be odd.

Stanley hadn't even dreamed of owning either one of those companies when those tools were made.

 

[jim m]

I have the same mac wrench Its for adjusting vavles tapets use the socket to losen the jamb nut and then use a screw driver to set lash


Jim

 

[cortez]

The "sockets" with the male end attached seems to be from a breaker bar "ratchet adapter"-- It turns a breaker into a ratchet. A closer look reveals lettering about pressing a button ect. There are some other types from long ago.

HF used to sell a 3/8" one, and it works good. I haven't seen them there for a while, but they do still sell the one piece breaker bar ratchet (it has a three way switch: on,off and non moving selector).

 

[Diesel-Mech]

Stanley hadn't even dreamed of owning either one of those companies when those tools were made.

I don't know how old those are or who the OEM is, do you have any idea?

 

[Zrexxer]

I don't know how old those are or who the OEM is, do you have any idea?

Stanley didn't even acquire the Blackhawk name until 1986, and it doesn't take much sleuthing to place both of those as decades older than that. Most likely early to mid 1950's. AFAIK Blackhawk was the manufacturer. Blackhawk patented that design of ratcheting mechanism in 1935.