Report – Michael Elliott – 16 Sep 1807

								Hexham Sept 16th 1807

Description of a Crushing Mill to be erected at Allenheads



Water Wheel 36 feet Diameter & 3 feet wide in the <Clear> will require 14 pair of Arms & 98 Bucketts



The Shrouds - of Cast Iron - 10 In wide or deep in the <Clear> and ½ an In thick with flanges to hold the Buckets & the Shrouds to extend ½ an inch or ¾ beyond the Buckets



The Arms of Oak - Width at the Shroud end  8 Inches

      Do- at the centre <….>	11

      thickness	  3

      The flat part of the Arm may be tapered ¼ of an inch 

      The arms at the centre 3 inches Further apart on each side than at the shrouds & <sprung> to the Shroud. 



[Inserted as a marginal note apparently applying to all of the above:] I have this 3 inches to be 4 or 5 inches which arms of this length will very well allow



The Axle tree – say 2 ½ feet Diam.



Rolls  -  4 Pairs  one pair Fluted & three pairs Plain, (one of these Pairs to crush Chatts instead of <Stampers>) The Diam of the four Pairs Rolls 13 in each 



[line drawing inserted at this point – not reproduced here but included in the downloadable version of this document- showing the fluted roll A between and higher than the two plain rolls B & C, and the ‘chat’ roll D lower than plain roll C. The following key is given:]



a	 the Fluted Rolls

b & c    the 2 plain Rolls

d	 the Chat Rolls 		



These three Wheels [ie. B, C, D] each 2 feet Diam with 39 teeth. A has 80.



A the large Wheel upon the Water Wheel Shaft 6 ½ ft Diam. --

B & C the 2 Wheels giving Motion to the 2 plain Rolls

D a Wheel the same as A & B giving Motion to the  Chat Rolls.  --- Diameter of B, C & D 8 feet with 39 teeth in each.



Provision to be made for a Fly Wheel to be added if thought needful.  The Wheel when finished to be well painted over with Tar & fine Charcoal Dust mixed to a proper consistency & put on quite hot.



Crushing Mill for Coalcleugh

Water Wheel Shrouds & Arms - The same as at Allenheads

      

Rolls – also the same as at Allenheads except the 3rd  pair for crushing the Chatts, not here to be used – but instead to have a set of 3 Stampers – here thought necessary from the excessive hardness of the materials.



Here as well as at Allenheads let provision be made for a Fly Wheel- which will not only regulate the Motion but also preserve the Wheels &c from the effect of the irregular Motion which will in time effect the joints of the Wheel &c.

      

at both places the outer end of the Wheel Shaft to have a [blank space]  to receive a coupling Box at any time for purposes that may be needful. 

      Mr Morrison to direct when the Castings shall be made

      the Diam. of the Gudgeons to be 6 inches

      the Diam. of the wheel to give Motion to the fly  10 feet

      the Diam of the lesser wheel upon the Shaft of the Fly  < 1-6 / 16>

	Diam of the Fly Wheel  18 ft



An Estimate of the Workmanship for Building a Crushing Machine at Allenheads Lead Mine for Thos Rd. Beaumont Esq. – 



The Water Wheel 36 feet Diam, 3 feet in the Clear with two sets of Arms & 4 sets of Rollers with 4 <Spur> Wheels, 8 pinions fitted up with  Laying Shafts universal joints & Hitching Boxes in the best way and manner with oak  frames and head stocks suitable to the said Machine all in a workmanlike manner & to the satisfaction of the Agents of each place The Workman to find all the Patterns at his own Expense for the Sum of £137 -0 -0

The above Estimate is without Casing the Water Wheel in a <ring> Waggonways or Water Troughs, to be made by day Work. 

Also, an estimate for a Crushing Machine at Coalcleugh with 3 Sets of Rollers and one Set of Stamps The Water Wheel the same as above, with laying shafts to the Rollers universal joints &c in the same manner as the above described. Estimate for the sum of £137 conformable to the attached description – This Estimate is without Casing in  the Water Wheel &c as above

Witness my hand this 16th day of September 1807

		Signed	Michael Elliott