US78680A - Thomas newman - Google Patents

Description

THOMAS NEWMAN. OF NEWV ORLlilANS.A LOUISIANA.-

Letters Patent No. 78,680, dated June 9, 1868` i IISIIROVIIDy SWITCH FOR CITYRAILROADS.

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'ro ALL WHOM IT MAY eoNoER'N':

Be it known'that I, THOMAS NEWMAN, of thecity of New Orleans, parish of Orleans, and'State of Louisiana, have inventeda certain new and useful Improvementiin Switches for City Railroads and I do hereby declare thefollowing to be a full, clear,`-and exact description ofthe same, reference being had to the annexed drawings, making'a part of this specification.

VMy invention is designed for use npon= those cityroads that, beginning with one,'run into two tracks, and its object is to dispense with the service cfa switch-tender, and avoid the expense entailed by his employment, as well as all danger cfa car getting on the wrong track, as frequently happens, by his inattention or carelessness..

My invention consists of a supplemental short raised. bar at the point at which the. road divides, there being such a bar in connection with both rails of the track, and it necessitates the use of diHerently-eonstructed wheels upon the two sets of cars, thatlare respectively designed for the two tracks into which thesingle track runs.`

yBut my invention will be better understood Vby reference to the drawing, whichshows the short bar which I have devised, in connection with an ordinary switch, and also a car-wheel, constructed with reference to bringing it into practical use.

At Figure 1 this car-wheel isshown upon the raised bar,l and it will be observed that in orderto run upon the bar, it' is provided with a tread, @upon the' inside as wellas'the'outs'ide of theordi'n'rv projecting ange, A, tokeep'fit Vupon the track. i

At Figure 2 the raised bar isvshoyrn, marked B, in 'connect-ion with an ordinary swith. C, which may be held in the position shown, by a wedge or any other effective applianc'e'lat'its point 1.

l The drawing exhibits only one side ofthe track, but it will be understood. that the other side conforms precisely thereto.

If, now, we suppose all the cars designed to go upon the right-hand track,theline of their motion being,in respect to the drawing at iig. 2, from the right to the left, to be provided with wheels constructed a represented at gfl, the operation will be as follows :p y

The ,vheels, in consequence of the double tread with which they are provided, will vtake upon the bars B, and be raised by them suiciently tolift the ange A above the switch C, and hence the car passes beyond the switch without being aieetedby it, andis then gradually brought down by the curved formation of the upper surface of these bars, until the tread takes upon the rail D and its fellow', upon the other side of the righthand track," when it goes upon its course. I

The c ars designed for the left-hand track being provided with ordinary wheels'that have a flange upon their inner side, are turned, by the switch G,-into the left-hand track, and so go upon that track with unfailing certainty. I v

Thebars B should always be high enough to raise the car-wheels .suciently to take the flange A over the switch C without touching it. l f

If, from any cause, it is desired to run the last cars upon the right-hand track, it is obviously only necessary to throwthe point 1 of the switch across the open space between the bar B and the rail E, in order to eiect this object. A But the cars that run upon wheels, as shown at iig. 1, can only be put upon the left-hand track by removing the bars B. g

Having thus described my invention, what I claim, and desire vto secure by Letters Patent, is-

The supplemental short bars B, in combination withan ordinary switch, C, at the point at which a singletrack city railroad runs into two tracks, when constructed as shown and described, for the purpose set forth.'

THOS. NEWMAN.

Witnesses: I

H. N. JENKINS, 'Burns B.. Buenas.

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