Chapter M

50 Machine for clearing turbid liquors.
51 Machine for driving Boats on Canals, under Tunnels, &c. without
disturbing the Water.
52 Machine to assist in taking Medicine, Pills, &c. (Humani nihil
alienum.)
53 Mangle (perpetual or rotatory).
54 Marine-Level (two essays on a.)
55 Micrometer for measuring very minute spaces. 83
56 Mirrors to collect Solar Heat, (method of forming.)
57 Mover, by dropping weights. 76

N

58 Nails (Machine for moulding.)
59 Nails (Machine for forging.)

P

60 Pencyclograph, or Instrument for describing portions of Circles,
and finding their centres by inspection. 51
61 Peristaltic Machine, for raising _much_ water, to small heights.
69
62 Persian Wheel modified, for raising water.
63 Pitch-fork, for musicians, with variable tones.
64 Power-wheel by heated Air. 43
65 Press, direct and differential. 66
66 Press (eccentric Bar.)
67 Printing Machine (two coloured.)
68 Protracting Motion (Machine for.) 49
69 Pullies (my Patent much improved.) 33
70 Pump (my equable.) 45
71 Pump, triple, in one column.
72 Pump (portable) worked by pedals.
73 Punch Machine for Engravers.
74 Punch Machine on another principle.
75 Do. rotatory, for my Engraving Machine.

R

76 Reciprocating Motion, (long) for Mangles, &c.
77 Reflector parabolico conical, or plano parabolical for light
houses, &c.
78 Regulator: (not centrifugal) for Wind or Water Mills, Steam
Engines, &c.
79 Retrographic Machine (Machine for Writing backwards) for
Engravers.
80 Rotato-gyratory Churn.

S

81 Screw, with greatly diminished friction. 81
82 Screws, (Machine for forging) &c.
83 Spinning Machines, (my Patent), Eagles, &c.
84 Spinning Machinery: another system, adapted chiefly to wool.
85 Spring, to keep a door strongly closed, yet open easily.
86 Steel Yard, differential: for weighing _vast_ weights with short
levers.
87 Syphon, (mechanical) to expel part of the water at the highest
point.

T

88 Tallow (Machine for cutting and trying.)
89 Tea-table (commodious help for the.)