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Post by welderpaul on Sept 6, 2012 13:02:19 GMT -5
Hello all  I've seen a mention in a 1991 copy of the Stillingfleet Standard of Manchester Gates. I understand they are to arrest a runaway vehicle - has anyone got any links to an image of one? Cheers. |
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Post by cortonwood on Sept 6, 2012 16:02:44 GMT -5
a manchester gate was a frame with a girder across the track(a bit like a goal post)usually on inclines.....the girder was counter-balanced so that the gate (technically and by law) remained closed..to pass through it going downhill you had to physically hold the gate open while the haulage passed through,...however when the haulage was travelling uphill the tubs could be run into the girder and it would open just by the force of the tubs to allow the haulage to pass through,(if this makes sense). a bit like a non-return valve for haulages  it was a sackable offence to sprag these open. |
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Post by John on Sept 6, 2012 17:29:03 GMT -5
a manchester gate was a frame with a girder across the track(a bit like a goal post)usually on inclines.....the girder was counter-balanced so that the gate (technically and by law) remained closed..to pass through it going downhill you had to physically hold the gate open while the haulage passed through,...however when the haulage was travelling uphill the tubs could be run into the girder and it would open just by the force of the tubs to allow the haulage to pass through,(if this makes sense). a bit like a non-return valve for haulages it was a sackable offence to sprag these open. Sounds a bit like a "Warwick Stop Block" Two RSJ's one high up the incline, one below joined by a long steel rope over rollers along the rings, one was up when the other was down and vice versa.... |
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Post by John on Sept 6, 2012 17:31:33 GMT -5
If I remember tomorrow I'll scan a sketch of the Warwick system and post it.
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Post by cortonwood on Sept 6, 2012 19:19:58 GMT -5
manchester gate wasnt anthing like a drop warrick,cant find anything on the net to show you,but it was a completely different set up,
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Post by Wheldale on Sept 7, 2012 2:20:33 GMT -5
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Post by tygwyn on Sept 7, 2012 3:38:47 GMT -5
Yes,
A Warwick goes from bottom to roof.
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Post by cortonwood on Sept 7, 2012 10:03:42 GMT -5
thats the one wheldale,,,while i was trying to find a pic of one to post there was someone on another forum saying that manchester gates wernt used in yorkshire,,..i've never worked anywhere other than in yorkshire and cant recall a pit without one.
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Post by spanker on Sept 7, 2012 11:59:23 GMT -5
Yes that is a Manchester gate but is only a small version at markham there was much beafier one at the top of a steep drift we named locally as cardiac drift and was also powered be a small draulic ram .the lads used to drop their tubs on it before splitting em into sets and then down.
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Post by welderpaul on Sept 7, 2012 12:17:17 GMT -5
Is it normal for a conveyor to be hung from the rings? Looks like it is made to sit on the ground?  Was stuff like Manchester gates made by individual pit workshops or bought in? |
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Post by John on Sept 7, 2012 12:46:31 GMT -5
Is it normal for a conveyor to be hung from the rings? Looks like it is made to sit on the ground? Was stuff like Manchester gates made by individual pit workshops or bought in? Sometimes, pretty common if there's a lot of floorlift to enable the floor to be dinted out. They are also strung from the rings over intersections. |
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Post by shropshirebloke on Sept 7, 2012 15:17:00 GMT -5
I can only comment on what I can remember from thirty-odd years ago, but here goes:
I've never heard of a "Manchester Gate", but we used to have something similar at the bottom of swillies on haulage roads, with a roller underneath, to stop the rope climbing into the roof.
Our Warwicks were single lengths of H-section girder, pivotted from the crown of a ring, with the base pointing uphill at 45 degrees approx, counterbalanced with an old oil drum full of concrete via a length of wire rope - usually at one or more points on an incline, depending on its length (one probably saved my life back in about 1978 but that's another story...).
As for belt structure - floor or suspended - whichever was easiest.
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Post by cortonwood on Sept 7, 2012 16:17:25 GMT -5
belts were slung from the rings for various reasons,the main two being for floor blow which would upset the level of the belt and to keep them out of the way of haulages to eliminate damage and to give more clearence..
the belt slings are adjustable,so if the rings move the belt structure can be altered.
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Post by Wheldale on Sept 8, 2012 5:03:29 GMT -5
Does anyone know how the Manchester and Waricks got their names? I was wondering if it was from the area where they were invented or colliery company? Manchester gate from Manchester Collieries? And does anyone know when they were first used?
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Post by John on Sept 8, 2012 5:14:04 GMT -5
I'd venture a guess that the Warwick block got it's name from the town or shire.....It was the only means I ever saw of stopping a runnaway set/s down drifts or long inclines.
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Post by cortonwood on Sept 8, 2012 7:26:43 GMT -5
warricks and mancherster gates wernt the only devices used..
what about the godwin warren arrester?
this was a buffer fitted onto another set of rails on the inside of the main haulage rails..these inner rails then had friction pads set at different torques along their length...if the haulage got away it would run into the buffer and this in turn would run along the rails,slowing down as the friction plates did their job..
really good device,mainly used on paddy roads where diesel loco's were used.
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Post by John on Sept 8, 2012 7:48:23 GMT -5
I finished in the UK coal industry in November of 1968, so only came across the Warwick stop blocks, we did have a brake dump system on the "new manrider" whereby if we had a rope failure or an emergency, the hydraulic suspension could be dumped and the cars would sit on friction pads on the rails tripping the haulage on overload.
Last pit I worked at with the NCB was Cotgrave, they didn't have any steep inclines during my short stay there, diesel loco's on the main roads and Becorite(sp) monorail haulages in gate roads.
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Post by spanker on Sept 8, 2012 12:57:54 GMT -5
I'm sure we called em crash girders and I believe we first saw em in derbqyshire ing early eighties they were bought in not made at the colliery and belts were also Hung to gerretm out of gummins
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