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Industry commercial trolley buses

Industry commercial trolley buses

Call our Sales Team on Provision for Passengers. WHEN immediately after the war it became apparent that the cost of replacing worn tramway track had become prohibitive, we foresaw the commencement of a distinct era for the trolley-bus. It was unreasonable to suppose that municipally owned power stations would continue to be run merely for supplying the small amount of power required in any locality during the daytime and the supply of lighting current at night-time, throwing away the load which is imposed on a power station by an electric tramway system and replacing the tramways by motorbuses.

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Sunbeam Commercial Vehicles

Call our Sales Team on Provision for Passengers. WHEN immediately after the war it became apparent that the cost of replacing worn tramway track had become prohibitive, we foresaw the commencement of a distinct era for the trolley-bus. It was unreasonable to suppose that municipally owned power stations would continue to be run merely for supplying the small amount of power required in any locality during the daytime and the supply of lighting current at night-time, throwing away the load which is imposed on a power station by an electric tramway system and replacing the tramways by motorbuses.

It is, of course, perfectly well understood that a fleet of motorbuses is quite capable of doing the work of a tramway, the only real advantage offered by the latter being its capability of better dealing, by means of large-capacity vehicles, with the peak-hour loads.

It was also evident that the housing problem would only be met by the creation or developrrient of estates on the outskirts or towns calling for an infrequent service of public passenger vehicles, and that the motorbus would not deal so economically with such sparse traffic as the trolley-bus would be capable of doing. The tendency in the early days of the development of the trolley-bus was for the chassis to be constructed in the workshops of tramway undertakings, and we pointed out to British manufacturers that here was a type of chassis for the production of which they were peculiarly well equipped, and that they should take this new branch of industry strongly in hand so as to prevent it passing to another type of works which were by no means so well fitted to produce it.

Among the concerns which immediately took an interest in the new type of chassis was the Associated Equipment Co. The first batch of chassis has been finished, and a complete test has been made of one set of equipment at Ipswich, the test being repeated on Thursday last at Walthamstow in the presence of a number of members of the Press and representatives of industry.

The trolley-bus chassis and the fourwheeled trailer chassis are being made by the Associated Equipment Co. The tests which were carried out at Ipswich took place on a Sunday morning before the trams were operating and before any quantity of traffic was about, Mr. Black, engineer and manager of the Ipswich Corporation, very kindly giving facilities for the test' on some of the trolley-bus routes which have already been established in the town.

The tractors and trailers will be shipped to Shanghai and will there be fitted with bodies, so that, whilst we are able to describe the power plant, we are not in a position to deal with body design or equipment. One very striking point about the trolley-bus chassis obtrudes immediately one sees the chassis, and that is the unusual amount of overhang in front of the front wheels. This is more than is generally adopted or considered acceptable in the case of a road vehicle ; but, as it shortens the wheelbase, a comparatively small turning circle is provided considering the total length of the vehicle.

Advantage will be taken of this overhang to provide an ordinary tramway lifeguard when the vehicle is fitted up in Shanghai. Bull motor through a cardan shaft direct on the worm-driven rear axle. The controller is foot-operated and is of the ratchet type, each downward movement of the foot being the equivalent of one notch on the controller.

We will deal, with this more fully later. Taking the dimensions and weights of the tractor chassis, we find that the overall length of the frame is 22 ft. The track of the front wheels is 5 ft. The height of the frame loaded is 2 ft.

The approximate weight of the chassis with motor and controller is 2 tons 13 cwt. The frame is fitted with suitable cross-members and motor-supporting brackets. The front axle is a nickel-steel stamping, with 31 per cent. The tyre size is mm, wide, fitting on mm. The rear wheels run on taper roller bearings, and they also are steel castings equipped with twin tyres of the size mentioned, and with brake drums for internal-expanding shoes. The ratio of the worm gear is 81 to 1. The internal-expanding brakes operating on the rear wheels are controlled by lever or pedal, independently or jointly, whilst there is a foot-operated emergency transmission brake behind the meter.

The cardan shaft between the motor and the rear axle has a Spicer-type universal joint at each end, each joint being enclosed in a dnstproof and grease-tight case.

The motor has been specially designed for trackless tram duties, the makers, Bull Motors, Ltd. It is of the ventilated type, one hour' rated for 50 h. Commutation is absolutely sparkless at any load up to amps. Provision is made for removing the armature, complete with the bearings and their housings in place on the shaft. This last-named is of large diameter, whilst all revolving parts are very carefully balanced before assembling, the whole armature being finally balanced when complete.

The speed curve of the motor is unusually good, the result being that the torque does not drop off rapidly at the higher speeds, and good acceleration is obtained without excessive diversion. The controller, as we have stated, is foot-operated, and, having regard to the conditions in Shanghai, great importance is attached to the provision of control gear of a robust character with the most simple arrangement of connections.

The advantage of foot operation is that the driver has his hands free for steering, sounding the alarm bell and operating the hand brake. There are certain disadvainages in taking an ordinary standard-type controller and placing it horizontally on the platform so that the control barrel, can be revolved by pressing the pedal.

The objection to this is that, to return the pedal to the " off " position, a spring must he employed, that is to say, the pedal must be pushed outwards by the driver against spring pressure.

The result is that, in overcoming the spring tension, it is almost impossible to notch the controller accurately when accelerating, so that contacts would very soon become badly burnt. As a result of a consideration of these disadvantages, there has been developed a controller in which the drum is operated by a pawl and ratchet, the pedal being pressed forward for a definite stroke for each notch of the controller.

Thus, the contacts on the drums are always locked in their proper position under the fingers and do not become badly burnt, as so frequently happens when a spring is used to return the pedal to the " off " position.

The controller has six notches, five being plain resistance notches and the sixth a field shunting notch, giving an increase in speed due to one-third of the field current being shunted. To release the controller from any position the pedal is allowed to rise about 2 ins, above normal. The controller is then returned practically instantaneously to the " off " position. This arrangement of the pedal gives the " dead-man's" handle feature. Even aeceleration is thus secured, and it is impossible with this system for a driver to abuse the motors or the transmission, whilst the result has been obtained without any complication of the contactor gear, and very little physical effort is required to apply the controller notch by notch.

The working parts are of a substantial character, and special attention has been given to accessibility. That the controller is of ample capacity for its work is shown by the fact that it has been tested to amps.

At this load the controller breaks the circuit without destructive arcing or other detrimental effect. The E. The trailer chassis follows in specification that of the trolley-bus, the dimensions, however, being as follow:— Frame-length overall, 18 ft. The frame height loaded and the wheel track are the same as in the rase of the trolley-bus.

The approximate weight of the chassis is 1 ton 10 cwt. The approximate loaded weight of the trailer with 3i tons of passengers and body weighing n tons is 6 tons 15 cwt.

In Shanghai the authorities reckon 20 passengers to the ton, so that the combined vehicle will be able to deal with a maximum load of passengers. In the course of the tests a gross weight of 7 tons 11 cwt.

In the course Of the acceleration tests it was proved that a speed of As an instance of normal running, a route was taken totalling 1. The total time occupied was 9i mins. The volts averaged about Archive Home article. Zoom page 9th June Noticed an error? If you've noticed an error in this article please click here to report it so we can fix it. Which of the following most accurately describes the problem?

Please select an option Headline has errors Article text has errors Article is incomplete Submit. Tags People : A. Black , Donald McColl. Locations : Shanghai.

Sunbeam had always made ambulances on modified Sunbeam car chassis. S T D Motors chose to enter the large commercial vehicle market in the late s, and once established they made petrol and diesel buses and electrically powered trolleybuses and milk floats. Commercial Vehicles became a separate department of Sunbeam in

David Harvey is a well-respected and authoritative author who has written extensively for Classic Bus magazine and has had many previous transport titles published by Amberley. He lives in Dudley in the West Midlands. Account Options Sign in. David Harvey. Many single-deck buses were either commandeered by the War Department or converted to ambulances. Service reductions were made and significant damage to buildings and infrastructure presented a unique set of challenges for those tasked with keeping the West Midlands working.


Команда криптографов АНБ под руководством Стратмора без особого энтузиазма создала алгоритм, который окрестила Попрыгунчиком, и представила его в конгресс для одобрения. Зарубежные ученые-математики проверили Попрыгунчика и единодушно подтвердили его высокое качество. Они заявляли, что это сильный, чистый алгоритм, который может стать отличным стандартом шифрования.

Но за три дня до голосования в конгрессе, который наверняка бы дал добро новому стандарту. молодой программист из лаборатории Белл по имени Грег Хейл потряс мир, заявив, что нашел черный ход, глубоко запрятанный в этом алгоритме. Черный ход представлял собой несколько строк хитроумной программы, которые вставил в алгоритм коммандер Стратмор. Они были вмонтированы так хитро, что никто, кроме Грега Хейла, их не заметил, и практически означали, что любой код, созданный с помощью Попрыгунчика, может быть взломан секретным паролем, известным только АНБ.

List of trolleybus manufacturers

- Он умер от разрыва сердца. Сегодня утром звонили из КОМИНТа. Их компьютер через Интерпол засек имя Танкадо в регистратуре полиции Севильи. - От разрыва сердца? - усомнилась Сьюзан.  - Ему ведь всего тридцать лет.

Давайте же, - скомандовал Фонтейн. Джабба нажал на клавишу.

Вы из полиции. Беккер покачал головой. Панк пристально смотрел на. - Вы похожи на полицейского. - Слушай, парень, я американец из Мериленда. Если я и полицейский, то уж точно не здешний, как ты думаешь. Эти слова, похоже, озадачили панка.

С каждым завыванием сирены слова Хейла эхом отдавались в ее мозгу: Я сожалею о Дэвиде Беккере. Сьюзан казалось, что она сходит с ума. Она уже готова была выскочить из комнаты, когда Стратмор наконец повернул рубильник и вырубил электропитание. В одно мгновение в шифровалке установилась полная тишина.

Внешний файл. Вы не шутите. - Если бы я шутил… Я поставил его вчера в одиннадцать тридцать вечера.

Если Танкадо не понял, что стал жертвой убийства, зачем ему было отдавать ключ. - Согласен, - сказал Джабба.  - Этот парень был диссидентом, но диссидентом, сохранившим совесть. Одно дело - заставить нас рассказать про ТРАНСТЕКСТ, и совершенно другое - раскрыть все государственные секреты. Фонтейн не мог в это поверить. - Вы полагаете, что Танкадо хотел остановить червя. Вы думаете, он, умирая, до последний секунды переживал за несчастное АНБ.

- Распадается туннельный блок! - послышался возглас одного из техников.

This rapid growth in population, a rapidly expanding suburbia and industrial growth to as Alldays & Onions, Austin, Morris Commercial, Singer and Rover.

Колокола на башне Гиральда созывали людей на утреннюю мессу. Этой минуты ждали все жители города. Повсюду в старинных домах отворялись ворота, и люди целыми семьями выходили на улицы. Подобно крови, бегущей по жилам старого квартала Санта-Крус, они устремлялись к сердцу народа, его истории, к своему Богу, своему собору и алтарю.

Где-то в уголке сознания Беккера звонили колокола. Я не умер. Он с трудом открыл глаза и увидел первые солнечные лучи. Беккер прекрасно помнил все, что произошло, и опустил глаза, думая увидеть перед собой своего убийцу. Но того человека в очках нигде не .

Что он не мог разобрать, но все-таки кое-как прочитал первые буквы, В них не было никакого смысла. И это вопрос национальной безопасности. Беккер вошел в телефонную будку и начал набирать номер Стратмора. Не успел он набрать международный код, как в трубке раздался записанный на пленку голос: Todos los circuitos estan ocupados - Пожалуйста, положите трубку и перезвоните позднее. Беккер нахмурился и положил трубку на рычаг.

Я должен был сейчас отдыхать в Смоуки-Маунтинс. Он вздохнул и задал единственный вопрос, который пришел ему в голову; - Как выглядит эта девушка. - Era un punqui, - ответила Росио. Беккер изумился.

Вот она показалась опять, с нелепо скрюченными конечностями. В девяноста футах внизу, распростертый на острых лопастях главного генератора, лежал Фил Чатрукьян. Тело его обгорело и почернело.

В подобной ситуации надо известить только одного человека - старшего администратора систем безопасности АНБ, одышливого, весящего четыреста фунтов компьютерного гуру, придумавшего систему фильтров Сквозь строй.

В АНБ он получил кличку Джабба и приобрел репутацию полубога. Он бродил по коридорам шифровалки, тушил бесконечные виртуальные пожары и проклинал слабоумие нерадивых невежд.

Выходила только абракадабра. Похоже, не один Танкадо умел создавать абсолютно стойкие шифры. Ее мысли прервал шипящий звук открываемой пневматической двери. В Третий узел заглянул Стратмор.

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  1. Faegrel

    Also that we would do without your magnificent phrase

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