US863828A - Apparatus for lighting or extinguishing a number of lamps. - Google Patents

Description

PATENTED AUG. 20, 1907. J. ANDERSON & J. H. BENNET. N APPARATUS FOR LIGHTING 0R EXTINGUISHING A NUMBER OF LAMPS.

APPLICATION FILED NOV. 6, 1906.

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'No. 868,828. PATENTED AUG. 20, 1907.

NET. NG A NUMBER OF LAMPS. APPLICATION FILED NOV. 6, 1905.

J. ANDERSON & J. H. BEN APPARATUS FOR LIGHTING 0R EXTINGUISHI Ill/Ir" G i E jzzz/ezaw/v" (707m yfWf-iazz J6% z 7f. jazz zzgf @Wm AKA/WA JOHN ANDERSON AND JOHN HARPER BENNET, OF EDINBURGH, SCOTLAND.

APPARATUS'FOR LIGHTING OR EXTINGUISHING A NUMBER OF LAMPS.

Specification of Letters Patent.

1 atented Aug. 20, 1907.

Application filed November 6,1905. Serial No. 286,096.

To all whom it may concern:

Be it known that we, JOHN ANDEnsoN, a subject of the King of Great Britain and Ireland, and residing at 23 Almond Bank Terrace, Edinburgh, Scotland, engineer, and JOHN IIARPER BnNNET, a subject of the King of Great Britain and Ireland, and residing at 34 P01- warth Terrace, Edinburgh, Scotland, have invented certain new and useful Improvements in and Relating to A aratus for Li htin or Extin uishin a Number D D D D of Lamps Simultaneously, of which the following is a specification.

This invention relates to automatic lighting devices which are operated by temporarily increased pressures in the gas mains, and the object of the present invention is to provide an improved actuating device of simplilied construction which shall enable a different cycle of operations to be carried out in different lamps in a circuit controlled from one point.

Devices of this kind have been known which were of service for maintaining one burner alight while others in the circuit were extinguished, but the object of the present invention is to provide a form of step by step valve, together with suitable actuating mechanism, which shall be capable of general application in say those cases where a circuit contains lamps having two, three or more lights, one or some of which only are required during certain periods The accompanying drawings illustrate a convenient construction of the improved device, and the following description will clearly explain the construction and operation of this device.

' In these drawings :-Figure 1 represents the improved actuating device applied to the operat on of what might be called a triple stage step by step valve. Such valves are themselves known, but the form of actuating device here illustrated is particularly adapted to the operation of valves of this type. Fig. 2 is a sectional view taken at right angles to the view shown in Fig. 1. Fig. 3 illustrates a modified form of valve. Figs. 4 & 5 are sectional views of an automatic lighting or extinguishing device, according to the present invention with the improved valve according to this invention applied thereto.

In carrying the invention into effect according to the form shown in Figv 1, a bell a having a guiding rod b, working in suitable, guide holes 0 c, is provided with a pivoted' or pendulum link (I, having a hook or pin e adapted to engage the teethf of a step by step valve 51. The bell a works in an annular liquid seal h, and is loaded to suit the particular part of the gas circuit at which it is applied, while gas enters the interior of the bell by a pipe j. The step by step valve is mounted on a bracket 7; through which a conduit is formed, and it is through this conduit that gas passes from the interior of the bell to the supply pipe at of the burner.

As shown in the drawing 9 teeth and three holes 11 are provided in the face of the valve. In this way the valve only opens the gas passage once for each three successive risings of the bell, as opposed to once at each alternate rising as in the ordinary form of step by step valve. According to this form of actuating device the valve is arranged within the gas bell to which the gas is admitted; by this arrangement we are enabled to employ a much more simple form of valve and valve actuating mechanism, than has hitherto been used. Also the mechanism being placed in the interior of the bell is less liable to derangement from external causes, is much more compact, and has a much better appearance than the forms hitherto known.

The valve shown in Fig. 3 may be substituted for the valve shown in Fig. l, in the case of a lamp which it is desired to maintain lighted after the bulk of the lamps in the circuit are extinguished. Thus assume that the valve shown in Fig. 1 is in the position shown, and also that the valve shown in Fig 3 is registering as shown with the passage 0 leading to the gas supply. Let both valves be now turned through an angle equal to that of one teeth. This will be effected by a single rising of the bell. The valve shown in Fig. 1 will be closed, but the valve shown in Fig. 3 will be rotated in the direction of the arrow and consequently will still leave the gas port uncovered. These valves are themselves known, but the form of valve hereinafter described with reference to Figs. 4 & 5 is new, and its particular use will be recognized from the following description In many towns it is desirable to extinguish many of the street lights, while certain othersas for instance street corner lights are maintained burning. Further such corner lights frequently consist of a group of three or more burners while one burner may, in some instances, be sufficient to meet the necessities of the case. In order to enable economic methods of lighting such as we have described to be applied in gas lighting circuits where automatic lighting and extinguishing devices are in use, we have devised the type of our apparatus illustrated in one form in Figs. 4 d: 5. This form consists of what we shall term a multi-stage stepby-step valve. Thus in the ordinary step-by-step valve the operations are alternate, t'. 6., openingclosingopeningand so on.

We have chosen a three burner corner light as the form of lamp to which our improved apparatus is applied, but it is to be understood that our invention requires to be but slightly modified to meet each individual requirement in a manner which shall be evident from the following description. Three burners 3, l, 5, are supplied withigas through pipes 6, 7. The pipe 7 is shown as passing up within the pipe 6, and is used to conduct a separate gas supply to the central burner, 4. The pipes 6 and 7, have outlets S and 9 arranged on the valve seat 10 at different radii from the center of rotation of the step-by-step valve 2.

In Fig. 5 the valve is shown as having six teeth and is arranged to carry out two cycles of operations at each revolution of the valve. Two large holes 11, are arranged diametrically opposite, and radially within the circles of these holes and at an angle of 60 thereto there are two smaller holes 12 in the disk connected to the holes 11 by a continuous groove or slot. The opening 8 leading to the side burners 3 and 5 is further from the center of rotation than the opening, 9, leading to the center burner, 4, but the large holes 11, in the valve 2, are adapted to uncover both openings. Thus when one large hole is in register with the opening 8 to the side burners the other large hole is arranged to uncover the opening, 9, to the middle burner 4. On rotating the valve, 2, through one tooth the large holes, 11, pass out of register with both passages 8 and 9, but one of the small openings, 12, is then in register with the passage 9, leading to the middle burner. The next impulse of the bell or like device closes all passages. Other numbers of teeth and other numbers and arrangements of holes mayas will be readily seenbe arranged to effect the results described.

It will be readily recognized that other stages may be introduced in the cycle of operations. Also it is not necessary that there should be three burners in the lamps which are kept in all night as the invention may be readily applied to a lamp having only one or indeed any other number of burners. In other parts of the district employing a three burner controlling device such as we have described, it may be desired to have the lamps completely extinguished during the time in which only one light is required in the corner lights or each alternate lamp may be extinguished. Such lamps we provide with a valve as shown in Figs. 1 & 2 or in Fig. 3.

Claims.

1. A device for automatically lighting and extinguishing street and other gas lamps having in combination a liquid sealed gas bell, gas inlet to said bell, a plurality of gas outlets to said bell, a through ported step-by-step valve placed within the bell and controlling all. said outlets, a pivoted link depending centrally within the bell and acting directly upon the step-by-step valve.

2. In combination, for automatically lighting and extinguishing the lights in a multiple burner lamp one or some only of which lights are required at certain periods, a liquid sealed gas bell, a gas inlet to said bell, a valve seat within the bell, a plurality of gas outlets leading from said valve seat, a ported rotary valve pivoted on said seat, said outlets being placed at difierent distances from the pivot, while the rotary valve successively uncovers different combinations of outlets at each successive stop of the valve, and means for transmitting motion from the bell to the valve, substantially as described.

53. In combination, for lighting and extinguishing the several lights of a multiple burner lamp, a liquid sealed gas bell, a single pendulum link depending centrally from the interior thereof, a gas inlet to said bell, a valve seat (10) within the bell, two gas outlets leading from said seat, a ported rotary valve having teeth on its periphery and pivoted on said seat, the outlets from the valve seat being placed at different distances from the pivot centers and diametrically opposite, while the ports on the valve are shaped to uncover at successive steps both, and then one only of the outlets and at a third step to cover both ports while the next step restarts the cycle.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

.TOIIN ANDERSON. JOHN HARPER BENNET.

Witnesses G. BROWN 'lwrmom, HELEN M. REID.

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