. Il giornale ferroviario di strada. La segale alla larghezza di un segmento di collettore, e che si inserisce in una delle scanalature tra i segmenti, serve come aguide per la sega. Con questo dispositivo vengono richieste circa un'ora e mezza per un uomo per incuneare un collettore contenente 117 segmenti e rimuovere le bave dai bordi dei tratti. Le scanalature sono leggermente più profonde di quanto sia inteso che il commutatore si usurerà in modo che la porzione rimanente possa servire da guida quando il commutatore viene nuovamente scanalato. È stato trovato che le spazzole comparativamente asciutte funzionano meglio sulla scanalatura
1018 x 2453 px | 17,2 x 41,5 cm | 6,8 x 16,4 inches | 150dpi
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. The Street railway journal . the sawequal to the width of a commutator segment, and which fitsinto one of the grooves between the segments, serves as aguide for the saw. With this device about one and one-half hours are re-quired for one man to groove a commutator containing 117segments and remove the burrs from the edges of the seg-ments. The slots are grooved slightly deeper than it isintended that the commutator shall wear in order that theportion remaining may serve as a guide when the com-mutator is grooved again. It has been found that compara-tively dry brushes work best on the grooved commutators.When the brushes contain too much oil and grease there isa tendency for the resulting mixture of carbon, dust andoil to fill up the grooves and cause short circuits. The Sao Paulo Tramway, Light, Heat & Power Com-pany will ask shareholders for permission to increase thecapital from $8, 500, 000 to $10, 000, 000. It is intended to.issue only $500, 000 at the present time. STREET RAILWAY JOURNAL. [Vol. XXX. No. 26.. BOSTON ELEVATED TEMPORARYMINAL AT FOREST HILLS TER- In connection with the extension of theBoston Elevateds overhead structure toForest Hills, approval of the companysplans for a temporary terminal at the latterpoint has been granted by the Railroad Com-mission. The accompanying drawings illus-trate the terminal at the elevated and sur-face levels, and also show the general designof the single column, concrete, arched struc-ture to be erected on Washington Street atthe crossing of the Arborway, which is apart of the park system of Boston. The temporary terminal is to be locatedat the edge of Forest Hills Square, directlyopposite the Forest Hills station of the NewYork, New Haven & Hartford Railroad.Southbound elevated trains arriving fromin-town stations will stop at an unloadingplatform, 357 ft. long by 20 ft. wide, locatedon the west side of the station, the tracksbeing between the inbound and outboundplatforms and 12 ft. apart on centers. Theseplatforms, t
