286

Class 6.—MANUFACTURING MACHINES AND TOOLS,

North Areas A, B. 10 to 31; C. D. E. 1 to 10, & 19 to 33 ; G. H. 25, 26.

[United

Patent yalve for fluids; represented in the annexed cut.

Watson’s Patent Valve.

The cut shows a vertical section of a straight cock.A A is the water-way represented, as closed by theblock or key B B, made to move vertically up and downby turning the screw C, which works through a nut H H,fitting loosely into the key. The dark line is an elasticfacing, which may be of leather, gutta percha, India-rub-ber, felt, or any material most suitable for the purpose towhich the cock is intended to be used, and is secured inits place by the brass ring D D, three screws throughwhich prevent the possibility of its afterwards moving, orthe facing material becoming displaced. P F is a boltscrewed into the centre, having a plate which draws theelastic material tightly over the face, and fitting closely,the seat G G G G. The horizontal section or plan throughthe line A A, shows the form of the cock; E E are guidesfor the key working freely up and down when moved bythe screw C.

166 Cowan, Alex., & Sons, 45 Upper Thames Street —Manufacturers.

Paper pulp-meter. Patented by Charles Cowan, Val-ley-field, near Edinburgh . The object of this apparatusis to measure out a uniform and exact supply of pulp tothe paper-machine, according to any width and thicknessof the web of paper which it may be desired to make.The pulp, after having been prepared in the engines, andmixed in ascertained proportions of raw materials and ofwater, is kept in the pulp or stuff jChest. The cup of thepulp-meter, which is driven in connexion with the papermachine, is made to dip into a box, which, by means of aball-cock or valve, is always kept full of pulp from thepulp-chest, and lifts and delivers the requisite quantityof pulp to make the width and thickness of the web re-quired. This is done by means of the slide upon the cup,which can be set even while the apparatus is in motion,so as to deliver the number of cubical inches of pulp ateach dip required for the particular paper to be made,which can be ascertained by a very simple calculation.In this way uniformity of thickness in every sheet ofthe paper manufactured is readily obtained.

168 Schlesinger & Co., 8 Old Jewry —Producers.Paging and numbering machine.

Ticket printing machine.

Machine for printing bank notes.

200 airbairn, W., & Sons, Manchester —Inventorsand Manufacturers.

Patent riveting machine, for riveting boilers, and othervessels, constructed of wrought iron. The moving slideand die are worked by the action of a revolving camupon an elbow joint, which gives a variable motion, andexerts the greatest force at the closing of the joint and thefinishing of the rivet. The following figures representthis machine:—

Fairbaim's Patent Riveting Machine. Side Elevation.