The Thompson-Houston System of Electric Lighting

By H. T. Cory

During the 1880s, when people displayed interest, there was a demand for information about the field of discovery and invention. To fulfill this public request, H. T. Cory wrote this work to present a treatise on one of the many schemes of producing light by electric currents, namely The Thomson-Houston System. This work targeted the general reader as well as the learned. Hence, the author starts it by introducing the terminology of electricity. He follows a simple language that is easy to follow for any reader.

• Language: English
• Publisher: DigiCat
• Release date: Jun 2, 2022
• ISBN: 8596547039341

Book preview

H. T. Cory

The Thompson-Houston System of Electric Lighting

EAN 8596547039341

DigiCat, 2022

Contact: [e-mail]

Table of Contents

The Thomson-Houston Dynamo.

Armature

Commutator

Thomson Air Blast .

The Field-Magnets ,

The Thomson Regulating Gear

The Brushes ,

Thomson Houston Dynamo Operates.

Fig. 23.

The Thomson Rice Arc Lamp.

The Sawyer-Man Incandescent Lamps.

General Remarks

Experiments with Three Light T-H. Dynamo No. 79

Fig. 25

Fig. 26

Fig. 27

Fig. 28

Fig. 29

Fig. 30

The Thomson-Houston Dynamo.

Table of Contents

In considering the current generator the first thing to be decided upon is the definition of the term dynamo. The following is thought to be a correct definition—A dynamo or dynamo electric machine is a machine which is used to convert energy in the form of mechanical motion into energy of electric currents, or vica-versa. Those used to generate currents of electricity are called dynamos, those used to generate mechanical motion are known as motors.

In attempting to make clear the theory of the dynamo, we will recall some simple experiments. In Fig. 1, send a current around B from right to left. Now A being free to move vertically either up or down, connect its binding posts to a galvanometer (that is, an instrument used to tell the direction of a current and also used to test the relative strength of two or more currents) and move A up suddenly when a current will be generated in A whose direction will be the same as that of the current in B. Now this current is not created energy, because in lifting[2] the coil A, work is expending against the attraction between the coils, as between two currents flowing in the same direction there is an attraction. If we pursue this experiment in its various forms we will find the following statement known as Lentz law is true, viz: "If the