Sir John Bennett Chronograph help neededfrom the photos is it possible to tell me

[binman]

Hi guys, New watch to me,by Sir John Bennett, 65&64 Cheapside London, maker to the Royal Observatory,1894 with an I, can you explain part of the description for me,movement is jewelled, don't know how many, goes on,movement has an over coiled spring and is 3/4 balance cock.
Now it took me a while to workout how to wind the hands, the key head is sticking up from the back plate, now there appears to be two winding posts but I only got one to work,
On the edge is the brake for the sweeping second hand thats working, next to that is a,I'll call it a pin that pushes in, what is this for?
At the same position with the front open is a tiny screw, just slightly further round in the next notch,there is a slotted steel plate with a knob in the slot what are these two for?
The watch is top set,turned this 27 times, it runs so quietly I cannot hear it,I have a French clock with the same maker on it, John Bennett has quite a history and I think this is why I brought this pocket watch, there are a couple of brown marks near the balance wheel I believe are oil sinks,

 

[fuseefan]

Hello Richard,

This is also a 'Centre seconds chronograph'. To set the time you need to press the pin and turn the crown. The brown marks near the balance are jewels.

Kind regards

Aditya

 

[gmorse]

Hi Richard,

The case hallmarks show London, 1884, sponsor's mark "AB", for Arthur Baume (Baume & Co., Swiss Watch Importers of 21 Hatton Garden).

Sir John Bennett made a great deal of noise in the debate about imported Swiss watches destroying the English watch trade, but he didn't balk at selling them himself. However, this looks like an English 3/4 plate movement which refers to the cut out in the top plate to accommodate the balance, making a thinner movement. The "overcoil" is the shape of the outer coil of the hairspring which allows it to expand and contract more freely, providing better isochronism.

The pin at 1 o'clock is held in with a finger nail to set the hands by the crown. It should be sprung so that the crown goes back to winding mode when it's released. The screw next to it holds it in the case. The slide at 2 o'clock starts and stops the movement, and hence the sweep seconds. You shouldn't need to open the case to wind it or set the hands.

There should be four jewels for the balance staff, two holes and two endstones. The impulse pin should be a jewel, as should the lever pallets. That makes 7, and there should be two for the escape wheel, making 9. Two more are visible on the top plate, which may or may not be matched underneath on the pillar plate.

Regards,

Graham

 

[binman]

Thank you so much again Graham and Aditya, I feel you are my guiding Angels, yes I looked into Sir John Bennett when his name appeared on my French clock, he was very much a entrepreneur, I do wonder if he was a genuine watch or clock maker, he seemed to endorse his name on a lot of products,thank you for giving me the importers name, I wonder if he did make part of the watch, the crown does adjust the hands with the button pressed, thanks again, so looks like I have a working watch,would the quality be any better than middle of road.
Best I leave the winding post alone, don't know what the other one does?
i rung the gentleman who I brought the watch from,for winding details but got no reply, It seems funny that people buy a watch and never find out about it or how it works, he has had it three years and had it serviced two years ago,when I arrived he had the watch in a nice watch case and in an envelope, but I saw the pin above the brake in the sale photo's and asked him it's function, he said I don't remember a pin,strange.Havent started the fusee repair yet as I have been busy, but will when I have a quite moment, well thanks again, you are very knowledgeable.one more thing where might I find someone to redo the faded details on the dial.

 

[binman]

Watch still running after 24hrs and spot on time,very pleased with purchase.

 

[binman]

Hello Richard,

This is also a 'Centre seconds chronograph'. To set the time you need to press the pin and turn the crown. The brown marks near the balance are jewels.

Kind regards

Aditya

Thank you Aditya.

 

[binman]

Hello Richard,

This is also a 'Centre seconds chronograph'. To set the time you need to press the pin and turn the crown. The brown marks near the balance are jewels.

Kind regards

Aditya

Thank you Aditya

 

[binman]

Hi Richard,

The case hallmarks show London, 1884, sponsor's mark "AB", for Arthur Baume (Baume & Co., Swiss Watch Importers of 21 Hatton Garden).

Sir John Bennett made a great deal of noise in the debate about imported Swiss watches destroying the English watch trade, but he didn't balk at selling them himself. However, this looks like an English 3/4 plate movement which refers to the cut out in the top plate to accommodate the balance, making a thinner movement. The "overcoil" is the shape of the outer coil of the hairspring which allows it to expand and contract more freely, providing better isochronism.

The pin at 1 o'clock is held in with a finger nail to set the hands by the crown. It should be sprung so that the crown goes back to winding mode when it's released. The screw next to it holds it in the case. The slide at 2 o'clock starts and stops the movement, and hence the sweep seconds. You shouldn't need to open the case to wind it or set the hands.

There should be four jewels for the balance staff, two holes and two endstones. The impulse pin should be a jewel, as should the lever pallets. That makes 7, and there should be two for the escape wheel, making 9. Two more are visible on the top plate, which may or may not be matched underneath on the pillar plate.

Regards,

Graham

Thank you Graham