Tree Insulator brought out

Electric Lighting Fixtures.

The cuts presented herewith represent a line of specialties recently brought out by E. M. Carhart & Co., Providence, R. I.

Fig. 1 shows a simple form of mast arm, made of double L iron. The L irons are used as conductors, and also as a track to carry the lamp over the street. These tracks with the

Electric Lighting Fixtures.

supporting brace, are insulated from the pole, thus dispensing with the cable, which has always been a source of annoyance, as well as expense. A switch is placed on the pole to cut the lamp out of circuit while being trimmed. Fig.2 is an enlarged section through the mast arm.

Fig. 3 is a tree insulator. This device

Fig. 7 Electric Lighting Fixtures.

operates so as to permit the line to remain in a normal position, allowing the tree to sway with the wind, and also to prevent the line from coming in contact with the tree.

Fig. 4 shows a carbon holder. The feature of this device is that when the thumb screw is turned to take out the carbon, it keeps open the adjustable part of the holder ready to receive the new carbon. This is accomplished by means

Electric Lighting Fixtures.

of a small collar on the screw inside of the adjustable part which follows out with the screw. This adjustable part is connected to the main body by a pin hinge, no part being separable.

Fig. 5 is a rubber insulator for the bottom of arc lamps. In many cases lamps cannot be hung more than seven or seven and a half feet from the floor or sidewalk, and there have been cases of death caused by persons coming in contact with the bottom of the lamp and the earth circuit. This rubber device is made to fit any style of lamp, and by its use, it is stated, a perfect insulation is secured.

Fig. 6 is a pole step, made removable to facilitate the work of the trimmers. Instead of a trimmer being obliged to carry a ladder in addition to his load of carbons, sockets of the pattern indicated are fastened on the sides of the pole. The trimmer takes two of the small brass steps, placing them in the sockets one after the other, goes up the pole, trims the lamp, comes down, takes out his steps, places them in his pocket, and goes to the next lamp post, and so on.

Fig. 7 represents the Carhart cable clip. This device, as will be seen, is simple in construction, and is easily adjusted in passing a fixture. It is made of the best galvanized iron.

The device described above, with the exception of the cable clip, are inventions of Van A. Thomas, superintendent of the Narragansett Electric Lighting company, Providence, R. I.