US861101A - Locomotive. - Google Patents

Description

110.801,101. PATENTBD JULY-z3, 190'7.v J. w. FINGH.

LOGOMOTIVE.

nrmonlon FILED 1103.0, 1900. BENEWED 000.14. 100e.

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JOHN WI'TNCH.

TTHNEYS J. W. FINGH. LOGOMOTIVB.

APPLICATION FILED. IAB.. 9, 1906. BBNEWED DBO. 24, 1908.

PATENTBD JULY 23, 1907.

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JOHN WALTER FIINCH, OF ELIZABETH, MISSISSIPPI.

LOCOMOTIVE I.Specification of Letters Patent.

Patented July 23, 1907.

Application filed Merch 9, 1906, Serial No. 305,083. Renewed December 24, 1906. Serial No, 349,360.

To all whom t may concern:

Be it known ythat I, JOHN WALTER 'FINCH, a citizen ofthe United States, and a resident of Elizabeth, in the county of Washington and State of Mississippi, have .invented certain new and useful Improvements in Locomotives, of which-the following isa specification.

My invention is an improvement yin locomotives, and consists in certain novel constructions and combinations of parts hereinafter described and claimed.

Referring to the drawings forming a part hereof Figure l is aside elevation oi a locomotive provided with my improvement. Fig. 2 is a detail view of the reversing mechanism. Fig. 3 is a plan view of a part of the locomotive frame. Fig. 4 is a front view of the arm and pinions, and Fig. 5 is a side view of the same, partly yin section.

In the ,present embodiment of my invention the locomotive A rests upon the frame a upon which are journaled shafts b in the usual manner, the said shafts v being provided upon the ends with drive wheels B.

The drive wheels B are provided at their peripheries on the outer sides thereof with internal racks b, and upon the extended ends of the shafts b are secured pinions b2, the saidpinions being rigid with the shafts and with the drive wheels B.

Arms b3, are journaled upon the shafts outside the pinions, the said arms being provided with a longitudinal slot b4 in which is slidably mounted a block b5 having journaled therein a stud shaft b to which is rigidly secured upon the inner side of the arm, a gear wheel b7 adapted to mesh with the rack or with the pinion as may be desired.

A connecting rod b8 is rigidly connected with each of the stud shafts upon the outer side of the arm, the said connecting rod being connected by a link b17, with the cross-head b15, movable in guides bw, and connected in turn to the piston rod 614 of the piston 613, movable in the cylinder Z210.

Above the cylinder b1 is a steam chest b11 containing the usual valve mechanism b12. The valve mechanism upon each side of the locomotive is connected by a link c1 to an upwardly projecting arm c13 of the rock shafts c7 journaled in brackets C14 upon the frame. Downwardly projecting arms c9 of the rock shaft c7 are provided with blocks c11 upon which slides a link c5, the said link being movable upon the block by means of the link c", connected to one arm c of the rock shaft C12 journaled in brackets c13 upon the frame, and rocked by means of a reverse lever C17 connected by a link o16 with the upwardly projecting arm c15 of the rock shaft. The shaft C12 is provided at approximately the center thereof with a Crank arm c25 connected by a rod C21", with a lifting spring c274secured to the frame whereby to assist in manipulating the reverse lever.

A supernumerary shaft C having cranked ends c provided with wrist pins c journaled in the connecting rods ybs, is suitably ,journaled upon bracketson .the frame, the said shaft being preferably arranged between the front axle and the one immediately following it, and with the cranked ends projecting beyond the vouter face of the wheels.

Upon the shaft are eccentrics off-.encircled by straps o4 connected by rods c18, with the links c5 in the -usual manner. The above described mechanism is the usual reverse mechanism ofthe ordinary locomotive but lhaving the eccentrics for operating the valve mechanism arranged upon the supernumerary shaft instead of vupon one of the shafts of the driving wheel.

Any suitable `means may be provided forfmov-ing the sliding block b5 in the slot b4, whereby to bring the gear wheel in mesh with the pinion or with the internal rack. In Figs. 4 & 5 I have shown a form of said mechanism comprising a setscrew Z218 .traversing a screwthreaded opening in the end of the arm and pivotally connected with the block. l

In operation when high speed is desired, the block vis moved in the slot to bringthe gear wheel into contact with `the pinion, while when low speed with greater power'is desired, the 'block is moved to bring the same in mesh with the internal rack. Since the gear wheel is rigid `with the connecting rod, it must rotate the drive wheel in the same direction with the revolution of the connecting rod. When the gear wheel is placed in a position intermediate the rack and pinion, the driving mechanism is entirely out of engagement with the drive wheel, which may rotate freely without producing any wear upon the cylinder and valve mechanism.`

It will be evident from the description that a much higher speed is attained by the same consumption of fuel and without increasing the number of strokes of the piston.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is- 1. In a locomotive, the combination with the frame, of shafts journaled in the frame, drive wheels secured to the shafts, pinions secured to the shafts, outside the drive Wheels, longitudinally slotted arms journaled on the shafts outside the pinions, blocks movable in the slots, set-screws traversing the arms and engaging the blocks whereby to move the same, stud shafts journaled in the blocks, gear Wheels rigid with the stud shafts on the inner side of the blocks and adapted to engage the pinion on the drive Wheel shaft, a connecting rod rigid with the stud shafts on the outer side of the blocks, cylinders supported on the frames, valve mechanism for controlling the admission of steam to the cylinders, pistons in the cylinders, connections between the pistons and the connecting rods, a supernumerary shaft journaled on the frame and provided at each end with cranked portions having wrist pins engaging the connecting rods, eccentrics on the supernumerary shaft, straps on the eccentrics, a movable link, rods connecting the ends of the link t0 the straps, a connection between the link and the valve mechanism, and means for moving the link to control the valve mechanism.

2. In locomotives, the combination with the frame, of

shafts journaled in the frame, drive Wheels having internal racks secured to the shafts, pinions secured to the shafts outside the drive wheels, arms journaled on the shaft outside the pinions, a block slidably mounted on each of the arms, a stud shaft journaled in the block, a gear wheel rigid with the stud shaft on one side of the block, a connecting rod rigid with the stud shafts on the other side of the block, means for moving the blocks whereby to move the gear Wheel into mesh with the internal rack or the drive shaft pinion, means engaging the connecting rods for driving the shafts, a supernumerary shaft journaled in the frame and having cranked ends engaging the connecting rods, and reversing mechanism connected with the shaft.

3. In a locomotive, the combination with the frame, of shafts journaled on the frame, drive wheels having internal racks secured to the shafts, pinions secured to the shafts outside the drive wheels, arms journaled on the shafts outside the pinions, stud shafts slidably mounted in the arms, gear wheels rigid with the shafts on the inner ends of the arms, a connecting rod rigid with the stud shafts on the outer side of the arms, means connected with the connecting rod for actuating said rod to rotate the arms, and means whereby to move the stud shaft into mesh with the pinion or the internal rack.

4. In a locomotive, the combination with the frame, of shafts journaled on the frame, drive wheels secured to the shafts, arms journaled on the shafts outside the drive wheels, a rod connecting the arms upon each side of the frame,` means on the arms for engaging the drive wheels whereby to rotate the same, andmeans for moving said engaging means radially to the drive shafts whereby t0 engage said Wheels at different distances from their center.

5. In a locomotive, the combination with the frame, of shafts journaled in the frame, drive wheels rigid with the shafts, means for driving the Wheels normally out of engagement therewith, and means for actuating said driving means to engage the wheels at dilferent distances from the center thereof.

6. In a locomotive, the combination with the frame, of shafts journaled on the frame, drive Wheels secured to the shafts, arms journaled on the shafts outside the drive wheels, a rod connecting the arms upon each side of the frame, means on the arms fornengaging the drive wheels whereby to rotate the same, means for moving said engaging means radially of the shafts whereby to engage said wheels at different distances from their centers, cylinders having pistons connected to the connecting rods, valve mechanism for the cylinders, a supernumerary shaft journaled on the frame and having cranked portions engaging the connecting rods, andmeans connected with the shaft for controlling the valves.

7. In a locomotive, the combination with the frameof shafts journaled in the frame, drive Wheels rigid with the shafts, means for driving the wheels normally out of engagement therewith, means for actuating said driving means to engage the wheels at different distances from the center thereof, a supernumerary shaft,` a connection between the driving means and the supernumerary shaft whereby to rotate the same, cylinders having pistons connected with said driving means, valve mechanism on the cylinders, and a connection between the supernumerary shaft and the valve mechanism for controlling the same.

8. In a locomotive, the combination with the frame, of shafts journaled on the frame, drive wheels rigid with the shafts, means for driving the wheels normally out of engagement therewith, and means for actuating said driving means to engage the wheels at different distances from the center thereof.

9.-In a locomotive, the combination with the frame, of shafts journaled on-the frame, drive wheels secured to the shafts, arms journaled on the shafts outside the drive wheels, a rod connecting the arms upon each side of the frame, means on the arms for engaging the drive Wheels whereby to rotate the same, and means for moving said engaging means radially of the shafts whereby to engage said wheels at different distances from their centers.

JOHN WALTER FINCH.

Witnesses:

B. O. MCGEE, S. A. BROWN.

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