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  • TABLE DES MATIÈRES
  • TABLE DES ILLUSTRATIONS
  • RECHERCHE DANS LE DOCUMENT
  • TEXTE OCÉRISÉ
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  • PAGE DE TITRE
    • Tne National Gas Engine Company, Limited (p.3)
    • Introduction (p.4)
    • Showrooms and Depots (p.6)
      • Standad Engines for Small-Power Users (p.9)
    • National Gas Engines (p.10)
      • Special Features of Standard Engines, 2 H.P. to 7 H.P (p.11)
        • Governors (p.11)
        • Ignition Arrangements (p.11)
        • Loose Cylinder-Liner (p.11)
        • Valves (p.11)
        • Forged-Steel Crank Shafts (p.11)
        • The Starting Arrangements (p.11)
        • Perfect Self-Lubrification (p.11)
    • Particulars of Standard Engines (p.13)
    • Standard Single-Cylinder Horizontal Engines (p.15)
    • Specification of standard Single-Cylinder Gas Engines (p.17)
      • General Description (p.17)
      • Cylinder (p.17)
      • Bed (p.17)
      • Air and Gas Valves (p.19)
      • Valves and Valve Gear (p.21)
      • Crank Shaft (p.21)
      • Gear Wheels and Side Shaft (p.21)
      • Crank-Pin Lubricator (p.21)
      • Connecting Rod (p.23)
        • Electric Ignition (p.23)
        • Tube Ignition (p.23)
        • Governing Gear (p.23)
      • Piston (p.25)
        • Lubricating Pump for Connecting Rod and Cylinder (p.26)
        • Air and Exhaust Silencers (p.26)
      • Starting Arrangements (p.27)
        • Tests (p.29)
    • Specification of 95 Horse-Power Gas Engine (p.32)
      • Air and Gas Valve and Cylinder Jacket (p.32)
      • Valve-Spindle Guides (p.32)
      • Side-Shaft Bearings (p.32)
      • Governing Gear (p.34)
    • Standard Normal Engines, fitted with Two Fly-wheels (p.41)
    • Standard Normal Engines, fitted with One Fly-wheels (p.43)
    • Particulars of Engines for Electric Driving (p.45)
      • Thousands of National Engines are use in:- (p.46)
      • In Electrical Work they are extensively used for: - (p.46)
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  • PAGE DE TITRE
    • Viex of Wellington works and head offices of the National Gas Engine Co., LTD. (p.2)
    • Types of standard national engines (p.7)
      • Standard 2 – Wheel Engine, 20 to 50 B.H.P (p.7)
      • Standard Mill Engine, 300 B.H.P (p.7)
      • Six – cylinder Engine. New design (p.7)
      • Standard Mill Engine, 150 B.H.P (p.7)
      • Large Vertical Engine, 300 to 1500 B.H.P (p.7)
    • Interior View of one of 20 Bays in our works devoted exclusively to the manufacture of National Gas Engines (p.8)
    • View of 4 Effective H.P. Gas Engine (p.12)
    • Standard Design of 6 to 10 Effective H.P. Gas Engine (p.14)
    • Standard Industrial design 18 Effective H.P (p.16)
    • Core-making Department in Foundry (p.18)
    • A testing Bay where all Engines are thoroughly tested before dispatch (p.20)
    • Standard Design of 36 Effective H.P. Engine for Electric Light purpose (p.22)
    • One of our Machine Shops where National Engines are manufactured on the most modern methods (p.28)
    • Standard Design of 20 to 40 Effective H.P. Gas Engine for Industrial Purpose (p.30)
    • Standard Design of 20 Effective H.P. Electric Light Engine (p.31)
    • Standard Design of 95 Effective H.P. Electric Light Engine (p.33)
    • Typical indicator diagrams (p.35)
      • Full load (p.35)
      • Light load (p.35)
      • Variable load (p.35)
      • Light spring Card (p.35)
    • Wellington works, Ashton – under – lyne (p.36)
      • Drawing office (p.36)
      • Pattern shop (p.36)
      • Brass foundry (p.37)
      • Brass – Finishing Department (p.37)
      • Heavy Turning Shop where Fly – Wheels and other heavy parts are machined by powerful Turning Mills (p.38)
      • Part of Foundry and Moulding Shop where all Castings for National Engines are produced (p.39)
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Starting Arrangements.

All our engines from 44 H.P. -upwards can be effectively started by our patent self-starter as shewn’in the accompanying illustration. This starter consists of a small hand-pump by which an initial charge of gas and air can be pumped into the working cylinder and subsequently ignited by the .electric or tube ignition. The impulse obtained sets the engine going, and this initial motion is sufficient to carry the piston on until it draws in its working charge in the usual way. Thereafter successive impulses take place automatically until the proper speed has been reached.

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Patent Hand-Pu.nrp Self Starter.

It is sometimes preferable to pump petrol vapour into the cylinder lor starting purposes, as it gives a more powerful impulse. For this purpose a small petrol cup is attached to the starting pump as shewn in the illustration. Starting arrangements are charged extra according to the type chosen.

27




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