referring now to the drawings , and in particular to fig1 there is shown an electromechanically actuated high speed frog assembly generally characterized by numeral 1 . it will be seen that the electrically solenoid operated frog 1 is conveniently illustrated as a left - hand turn - out arrangement for a trolley pole of a trolley coach or bus system at the point or location where the routes of travel diverge in different directions . as shown , the frog 1 includes a main pan casting 2 which is adapted to be securely attached in a suitable manner , such as , being bolted to the overhead structure of the electrical trolley conductor system at the diverging points or locations in the route of travel of electric powered vehicles . it will be noted that the pan casting 2 which is preferably cast of ductile iron includes a plurality of stationary or fixed runners 4 , 5 and 6 integrally formed on the underside thereof . that is , as shown in fig1 the left end of the pan assembly 2 includes a straight route extending ductile iron approach runner 4 while the right end of the pan assembly 2 includes a straight route ductile iron runner 5 and a turn - out route ductile iron runner 6 . it will be seen that disposed in alignment with the normally exiting end of the runner 4 is a renewable runner insert 8 which is fixedly secured to the underside of the pan casting 2 by four flat head screws 9 and four suitable lock washers and nuts ( not characterized ). as shown in greater detail in fig7 and 8 , the renewable runner insert 8 is preferably a stainless steel investment casting having an upper flat mounting plate portion 10 and an integral extending running blade portion 11 . it will be noted that the mounting plate member 8 includes four countersink holes 12 for accommodating the threaded end of the four flat - head screws 9 . in practice , the renewable runner insert 8 spans a gap located between the adjacent end of the straight approach runner 4 and a pair of movable runners as will be described presently . in viewing fig1 and 7 , it will be seen that the running blade 11 is disposed next to the end of stationary runner 4 and has a heel portion 14 which has a thickness substantially equal to the thickness of the stationary runner 4 . as shown in fig2 the bottom or lower edge or lower surface of the runner 11 is at the same level as the bottom edge or lower surfaces of the stationary runner 4 and the movable runner 22 so that a contact shoe will pass smoothly thereover . both corners of the left - hand end of the heel portion 14 are chamfered to remove any burrs or rough edges as shown by beveled portions 16 and 17 in fig7 . also , the beveled corners permit a greater latitude in the tolerances and allowances in the dimensional width of the entrance runner 4 and provide for the smooth transition of the u - shaped carbon contact shoe assembly 46 . it will be seen that the front or toe portion of the running blade 11 is tapered on one side 18 which is left - hand frog assembly . it will be appreciated that the right - toe end of the running blade 11 is tapered for a left - hand turn - out frog assembly . in practice , the angle between the tapered surface 18 and the straight surface 19 is approximately six degrees ( 6 °). as shown in fig1 and 2 , the tapered toe portion of the running blade 11 is selectively engageable by the tapered tips 20 and 21 of a movable runner 22 . the movable runner 22 includes a turn - out running rail 23 and a straight running rail 24 . in viewing fig2 , 4 , and 6 , it will be noted that a pivot pole or rotatable shaft 26 is integrally formed on the remote end of the movable runner 22 . the pivot shaft 26 is adapted to be rotated above its axis by an electrical solenoid operator 28 which is suitably mounted on the main pan casting 2 . as shown in fig2 the upper end of the shaft 26 is inserted into a boss 29 threaded on the pan casting 2 . next , the one bifurcated end of an operating lever 30 is firmly attached to the upper free end of the shaft 26 . the other remote end of lever 30 is pivotally connected to one end of a movable plunger 31 of the solenoid 28 . it will be seen that the other end of the solenoid plunger 31 is pivotally connected to the free end of a pivot shaft 32 of a rotatable reset lever 33 . the pivotal shaft 32 is rotatable in a boss 35 which is threaded on the pan casting 2 . a deflector arm or plate 36 is an integral part of the reset lever 33 . the deflector arm 36 is disposed adjacent the turn - out runner 6 so that the movable runner 22 is reset to its straight position by the passing trolley contact shoe assembly 46 which may take the form of a bronze carrier member which holds a carbon insert member 48 having a u - shaped groove which follows the electrified trolley wire and the various runners of the frog assembly . in practice , the shoe assembly may be similar to that shown and disclosed in u . s . pat . no . 4 , 567 , 335 , entitled &# 34 ; high speed trolley harp assembly &# 34 ; to thomas w . griffiths . a protective cover 37 , shown in phantom , encloses the solenoid operator 28 and the other associated components and is held in place by a pair of wing nuts 38 and 39 . it will be appreciated that the movable runner 22 is supplied with electric propulsion current via a shunt wire 40 . normally , the tip of the straight running rail 21 engages the tapered side of the running blade 11 so that the trolley contact shoe assembly 46 moves from stationary entrance runner 4 , along the running blade 11 and the movable running rail 24 to the stationary straight exit runner 5 as the trolley bus moves along the main route of travel . now when it is desired to divert an oncoming trolley bus , the operator simply activates the turn signal which causes the energization of the coil of the electromagnetic solenoid 28 via leads 42 and 43 . as shown in fig1 and 2 , the leads 42 and 43 are held in spaced relationship by an insulative wire support member 44 which is mounted on the front end of the pan casting assembly 2 . the energized solenoid 28 attracts and pulls the plunger 31 outwardly which causes the lever 30 to move in a counterclockwise direction . the counterclockwise rotation , in turn , is imparted to shaft 26 which causes the movable runner 22 to shift so that the tapered tip 20 of movable running rail 23 is moved against the surface 19 of running blade 11 . the movement of the plunger 31 to the left also causes the reset lever 33 to rotate in a clockwise direction . the clockwise motion of the reset lever 33 is also conveyed to shaft 32 so that the mechanical reset deflector arm 36 is moved against the side of the turn - out runner 6 . the solenoid coil of electromagnet 28 is deenergized after a few seconds of energization by a separate timer supplied by other vendors . it will be appreciated that the high speed frog will remain the position as shown in fig1 because of the over - the - center spring biasing arrangement . now when the trolley contact shoe assembly 46 engages the deflector arm 36 , a counterclockwise rotation is imparted to the reset lever 33 which moves the plunger 31 to the right . the rightward movement of the plunger 31 rotates the lever 30 in a clockwise direction which , in turn , rotates the pivotal shaft 26 and shifts the movable runner 22 so that the tapered tip 21 of the running rail 24 moves against the tapered surface 18 of the running blade 11 . thus , the high speed frog 2 resumes its normal position in which the sliding trolley contact shoe follows the trolley bus as it proceeds along the main route of travel . as previously mentioned , the turn - out angle is only six degrees ( 6 °) and the smooth transition between the stationary and movable runners permits the trolley buses to negotiate the frog 2 at a relatively high rate of speed . thus , the high speed frog 1 minimizes the chance of derailment of the trolley contact shoe and the loss of power to the trolley bus . further , the use of the runner insert 8 in the high speed frog 1 eliminates the electrical arcing and erosion due to the momentary power interruptions caused by the discontinuities between the movable and stationary runners . hence , the elimination of the gaps between the movable and stationary runners substantially reduces wear and damage to the trolley contact or power pickup shoe as well as alleviates the whipping and sideways movement of the trolley pole . thus , the present invention has been described in such full , clear , concise and exact terms as to enable any person skilled in the art to which it pertains to make and use the same , and having set forth the best mode contemplated of carrying out this invention . we state that the claimed subject matter , which we regard as being our invention , is particularly pointed out and distinctly set forth in this application . it will be understood that variations , modifications , equivalents and substitutions for components of the above specifically - described embodiment of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims .