Pre-war - Other

Although these two manuals on the face of it look virtually the same there are many differences.

• Page 3 : SM1 & 2 - Under 'Further examples of Gear Ratios - Add - ½" pinion and 2½" Gear
• Page 3 : SM4 - Add - ¾" Pinion and ¾" Contrate
• Page 5 : SM29 - Text amendment 'mechanical advantage of three' » 'mechanical advantage of 3:1'
• Page 5 : SM30 - Text amendment 'advantage is increased to five' » 'dvantage is increased to 5:1'
• Page 5 : SM31 - Text amendment 'mechanical advantage of seven' » 'mechanical advantage of 7:1'
• Page 5 : SM32 - Text amendment 'mechanical advantage of 6' » 'mechanical advantage of 6:1'
• Page 5 : SM33-35 - Text amendment 'mechanical advantage is two' » 'mechanical advantage is 2:1'
• Page 6 : SM38 - Text amendment 'mechanical advantage of three' » 'mechanical advantage of 3:1'
• Page 6 : SM38 - Reference to model 6.24 » 6.29
• Page 8 : SM51 - Reference to models 4.1 & 1.56 » 4.24 & 1.100
• Page 9 : SM63 - Mechanism changed - 'Dog Clutch' » 'Free Wheel Device'
• Page 10 : SM65 - Text amendment in paragraph 2
• Page 10 : SM66 - In last paragraph. - 1 in 2 » 2:1, 1 in 4 » 4:1, 1 in 1 » 1:1
• Page 12 : SM69 - The text under Fig SM.69a is deleted
• Page 12 : SM70 - Paragraph 1 - 'a Collar and Set Screw 10' » 'a Collar 10'
• Page 13 : SM72 - Mechanism changed - 'Drive-changing Gear' » 'Automatic Release Gear'
• Page 14 : SM75 - Mechanism changed - 'Gear Changing Lever with Quadrant' » 'Gear Changing Levers with Quadrant'
• Page 15 : SM80 - First paragraph. - 'with a male Dog Clutch section 5' » 'with a Dog Clutch member 5'
• Page 15 : SM81 - Mechanism changed - 'Sliding Gear Change' » 'Radial Gear Box'
• Page 15 : SM81a - Mechanism deleted
• Page 16 : SM82 - Last paragraph. - '(that is the resistance on rod 2)' » ': that is the resistance on rod 2'
• Page 16 : SM82 - Last paragraph. - 'The gear ratio is 1:2' » 'The gear ratio is 2:1'
• Page 16 : SM83 - First paragraph. - 'two to one' » '2:1', Last paragraph. - 'one to two' » '2:1'
• Page 19 : SM103 - Mechanism changed - 'Pawl and Ratchet' » 'Air Brake Governor'
• Page 19 : SM104 - Text font size much smaller due to changed mechanism SM103
• Page 20 : SM108 & 108A - Text amendment - 'bolted one on either side of the web' » 'bolted on either side of the web'
• Page 21 : SM112 - Mechanism changed - 'Free Wheel Device' » 'High Speed Governor'
• Page 22 : SM113 - Paragraph 3 - 'A length of 27BI Resistance Wire (part No.312)' » 'A length of spring cord, drawn out straight'
• Page 23 : SM116 - Mechanism renamed - 'Automatic Safety Device for Lifts' » 'Automatic Safety Device for Elevators'
• Page 24 : SM131 - Paragraph 2 - In the 5/29 manual 'within' and 'round the chain' were in italics
• Page 25 : SM133 - Extra sentance added to the end
• Page 26 : SM134 - Text change - 'The detail illustrates a built up Meccano ball bearing. It is' » 'The built up Meccano bas bearing is'
• Page 27 : SM138 - Mechanism changed - 'Roller Bearings Applied to Pontoon Crane' » 'Roller Bearings'
• Page 27 : SM139 - Text change - 'Two washers are placed' » 'Four washers are placed'
• Page 27 : SM140 - Text change - 'that 26 teeth and 48 teeth Bevel Gears' » 'that 16 teeth and 48 teeth Bevel Gears'
• Page 28 : SM143 - The bottom of the illustration is removed and the last sentence of the desrciption is amended to suit.
• Page 28 : SM142A - Mechanism added - 'Large Sprocket Wheel'
• Page 29 : SM161 - Mechanism changed - 'Motor Chassis Steering Gear and Spring Suspension' » ' Motor Chassis Steering Gear'
• Page 30 : SM163 - Picture and text swapped over on the page - i.e. text on top and picture underneath » Picture on top and text underneath
• Page 30 : SM164 - Mechanism changed - 'Steering Gear for Tractor' » 'Automatic Yacht's Steering Gear'
• Page 30 : SM165 - Mechanism changed - 'Steering Gear' » 'Castor Steering'
• Page 32 : SM182 - Mechanism changed - 'Application of Screw Gear in Traversing Mechanism of Machine Tools' » 'Ratchet Operated Screw Traverse'
• Page 33 : SM183 - Mechanism renamed - 'Hoisting Gear of Crane Driven by Screw Mechanism' » 'Screw Operated Ram'
• Page 33 : SM183 - Text change - 'and its movement is employed....series of pulleys' » 'and this movement may be....ram of a hydraulic crane'
• Page 33 : SM183 - Reference to model 7.4 changed to 7.23.
• Page 34 : SM188 - Mechanism changed - 'Screw Adjustment' » 'Screw Lifting Mechanism'.
• Page 35 : SM203 - Reference to model 6.42 changed to 6.43.
• Page 36 : SM205 - Text change - 'connected to Bent Strips 3' » 'connected to the 2½" x ½" Double Angle Strips 3'.
• Page 38 : SM214 - Text change - 'Coal Cutting Machine (Model No. 7.2)' » 'Meccano Model Coal Cutting Machine'.
• Page 38 : SM216 - Text change - 'Steam Shovel (Model No.7.8)' » 'Meccano Steam Shovel'.
• Page 39 : SM219 - Mechanism changed - 'Bogie with Equalising Beams' » 'Momentum Traverser'.
• Page 41 : SM253 - Illustration turned upside down.
• Page 42 : SM259 - Reference to SM No.s 51,63,72,86,137 deleted and 76 and 115 added.
• Page 42 : SM260 - Mechanism deleted - 'Pedestal'
• Page 43 : SM265 - Reference to SM99 changed to SM63
• Page 43 : SM266 - Text deleted - 'The Eccentric is a form of cam (see SM252)'.
• Page 44 : SM270 - Text change - 'by the Compression Spring 7 (Part No.120B)' » 'by the spring (portion of part No.43)'
• Page 44 : SM270 - Text change - 'slightly stretched before being used in this apparatus' » 'slightly stretched and cut to size before being used'
• Page 44 : SM273 - Reference to model 4.35 changed to 4.19.
• Page 46 : SM277 - Mechanism changed - 'Winding Gear for Cranes or Derricks' » 'Crosshead for Stationary Engine'.
• Page 46 : SM278 - Text change - 'means of 1" Angle Brackets' » 'means of 1" x 1" Angle Brackets',
• Page 48 : The Index is amended to suit the Mechanism changes.
• Page 49 : The Meccano Magazine covers changed.
• Page IRC : 'Meccano Products Price List' » 'Meccano Power Units'