US892053A

US892053A - Railroad-switch.

Info

Publication number: US892053A
Application number: US41977308A
Authority: US
Inventors: William Holquist
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-03-07
Filing date: 1908-03-07
Publication date: 1908-06-30
Anticipated expiration: 1925-06-30

Description

No. 892,053. PATENTED JUNE 30, 1908;

W. HOLQUIST.

RAILROAD SWITCH.

APPLICATION FILED MAB. '1, 100a.

hsHnnTs-snm: 1.

UNITED STATES PATENT OFFICE.

WILLIAM HOLQUIST, OF- WILCOX, PENNSYLVANIA.

RAILROAD-SWITCH.

specified, wherein there will be an improved means for actuating the switch, and an improved lock for such means.

The invention consists in certain switch operating and locking devices applied to the track near the rails, and certain devices preferably carried upon the engine to co-act therewith and operate the same.

The invention further consists in certain novel features of construction and arrangement of parts hereinafter fully described, illustrated in theaccompanying drawing, and specifically claimed.

In the accompanying drawings I-Figure 1 represents a plan view of a track showing the switch in position to allow a train to pass on the main line. Fig. 2, is a diagrammatic view of an engine partly broken away to show the-actuating means carried thereon. Fig. 3 is a detail view of the switch bar, its housing and adjacent parts, the same being in the'position as in Fig. 1. Fig. 4 is a similar view showing the device in the position opposite that of Fig. 1, that is to say, in position to allow the train to pass on or from the siding. Fig. 5 is a partial vertical section showing a portion of Fig. 4. Fig. 6 is a detail plan view of one of the cam levers. Fig. 7 is a detail elevation of Fig. 6, partially in section. Fig. 8 is a sectional view through the line aa of Fig. 3. Fig. 9 is a sectional view through the line bb of Fig. 4.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The numeral 10 indicates the main line rails of a track carried on suitable ties, as at 11. At 12 are shown the side track or turnout rails, provided with the usual frog and switch-point 13. Between the main line rails is held a housing 14, wherein is formed Specification of Letters Patent.

Application filed March 7, 1908.

Patented June 30, 1908.

Serial No. 419,773.

suitable guides 15. The housing is provided with a cover 16, and is here shown as of circular form, although it will be obvious that for the purposes of this invention the same may be of any other desired form. Held in the housing 14 to move longitudinally of the guides 15, is a switch bar 16, provided in one face thereof with a notch 17. mounted within the casing, being pivoted thereto as at 19. The latch 18 is provided with

arms

20 and 21, said arms being adapted to extend within the recess 17 and hold the switch bar in position when the switch is either fully opened or closed.

The switch bar is here shown as provided with heads 22 adapted to fit within the housing, and the housing has formed at the middle thereof a partition 23. Springs 24 are held between the heads 22 and the middle partition 23, the normal tendency of said springs being to keep the switch bar in a median position in the housing.

A rocker 25 is ivotally mounted as at 26 exterior of one end of the housing, and a similar rocker 27 is pivoted at 28 exterior of the other end of said housing. The

rockers

25 and 27 are rovided with segmental recesses 29, as clearly shown in Fig. 5. These rockers are further provided with arcuate oppositely disposed slots 30. A connecting rod 31' is ivotally attached to the bar 16 and extents into the recess 29 of rocker 25 and is provided with a pin 32 held to move in the slots 30. A similar connecting rod 33 is held in the recess 29 of rocker 27, being provided with a similar pin 34, as shown.

Pivotally attached to the latch 18 are connectin rods 35, one extending in the direction oi direction of the rocker 27. A link 36 connects one of said rods 35 with the rocker 25, and a link 37 connects the other rod with the rocker 27 each being pivotally mounted thereon.

It will be observed that the rocker is shown as in the form of a disk with a segmental recess, but it will be apparent that the form of this may be varied, if it is desired, without affectin the objects thereof.

Suita le clips 38 are arranged upon the bar 16 to hold the switch points in position thereon.

Pivotally mounted adjacent the track, and some distance from the devices just described, are levers 40, and upon the same shaft and A latch 18 is the rocker 25, and the other in the given to the reach rod 43 connecting said pressed air from one of the air cylinders of that the link 36 will produce a thrust on the fixed thereto, are rocker arms 41. It is obvious that these arms, when desired, may be in the form of a crank, as shown at 42, in Fig. 1. Reach rods 43 connect the two cam levers on the main track with the rockers, and thereach rod 44 connects the cam lever on the side track with the adjacent cam lever of the main track, as clearly shown in Fig. 1. Carried upon the engine is one or more fluid pressure cylinders 45, provided with the usual piston and piston rod 46. Upon the piston rod 46, at the lower end thereof, is carried a roller 47, and this roller is adapted to extend downward and contact with one of the cam levers 40. The piston is preferably actuated by means of air pressure admitted through a pipe, as' shown at 48, and valve controlled by the engineer, deriving the comthe locomotive. It may, however, if desired, actuate the device by steam pressure, or by any other means fit to be used.

In the usual form of the device, two cylinders 45 are preferably mounted on the locomotive, one being at the forward right-hand end, and the other at the rear left-hand end thereof. It will be plain, however, that while there is here shown a locomotive equipped in this manner, that the same de vice may be used for electric cars, compressed air locomotives for mines, or any other form of vehicle running on tracks, and it is not desired to confine the application solely to locomotives The operation of the device will be best understood by assuming that the p arts are in the position shown in Fig. 1, with a locomotive coming towards the switch from the right-hand end of said figure, as indicated by the arrow. Assuming that the engineer de sires to remain on the main track, he simply permits the roller 47 to remain in raised position, this being the usual position in which it is intended to carry said roller, and the switch will remain locked, as shown. Should he, however, desire to run on to the side track, or turn-out, he moves the roller 47 to the position shown in Fig. 2. It will then strike the face of the cam lever 40 at the right hand of Fig. 1. This will cause a thrust to be cam lever with the rocker 25. This will cause the latter to rotate about the pivot 26, and the first action that takes place will be rod 35 between it and the latch 18. Inasmuch as the pivot 19 is located nearer the bar 16 than the pivoted connection of the rod 35, it will cause the latch arm 20 to lift out of the recess 17. The springs 24 will then tend to move the bar 16 to a central position. As the motion continues, the end of the arcuate slot 30 will contact with the pin 32 and force the bar 16 still further over, throwing the switch into position on the side track. have been turned sufficiently far so that the arm 27 will project within the recess 17 and hold the bar 16 against return. It is, of course, obvious that the motion of the bar 16 will, also, affect the rocker 27 and the cams connected therewith to throw them into position for action from the opposite end of Fi 1.

It will thus be seen that this device provides a simple and efficient means for accomplishing the purpose specified, and one which may be readily applied to any existing tracks with the minimum of expense.

What is claimed is Y 1. In an automatic railroad switch, a switch bar held to operate said switch, a locking means for said bar, springs adapted to immediately center said bar upon release of said locking means, a rocker, means to connect said rocker to said locking means and actuate the same, means to connect said In the meanwhile the latch 18 will rocker and said bar and actuate the switch arranged for operation only when the bar is switch bar held to operate said switch provided with a recess therein, a latch pivotally mounted adjacent said bar and adapted to engage said recess, springs adapted to immediately center said bar upon release of said locking means, a rocker, means to connect said rocker and said latch and actuate the latch, means to connect said rocker and said bar and actuate the switch arranged to operate only when the bar is released from the lock, means to rotate the rocker, and rolling stock supported means to actuate the last mentioned means.

3. In an automatic railroad switch, a switch bar held to operate said switch, a locking means for said bar, springs adapted to immediately center said bar upon release of said locking means, a rocker, means to connect said rocker to said locking means, a rod pivoted to said bar, a pin and slot connection between'said rod and rocker whereby the rocker may be rotated sufficiently to release the latch before the bar is moved, means to operate said rocker, and rolling stock sup ported means adapted to actuate the last mentioned means.

4. In an automatic railroad switch, a switch bar held to operate said switch, a locking means for said bar, springs adapted to immediately center said bar upon release of said locking means, a rocker, means to conreleased from the look, a cam lever pivoted adjacent the t1 ack, a connecting rod between said cam lever and rocker, and rolling stock supported means adapted to throw said cam lever.

5. In an automatic railroad switch, a housing, a switch bar held to slide in said housing, a locking means for said bar, springs held in said housing adapted to center said bar l0ngitudinally thereof, when released from said locking means, a rocker, means to connect said rocker to said locking means and actuate the same, means to connect said rocker to said bar and actuate the switch arranged for operation only when the bar is released from the lock, means to rotate said rocker, and rolling stock supported means adapted to actuate the last mentioned means.

6. In an automatic railroad switch, a housing, guides formed therein, a switch bar held to move in said guides provided with a recess in one side thereof, springs held in said housing adapted to center said bar longitudinally thereof, a rocker comprising a pivoted disk having a segmental recess thereln and oppositely disposed arcuate slots in the side walls of said recess, a latch pivotally mounted in said housing arranged to co-act with said recess and lock said switch in either open or closed position, a rod pivotally connected to said latch and rocker, a second rod pivotally connected to said bar and provided with an eyed end arranged to lie in the recess of the rocker, a pin passing through said arcuate slots and eyed end and forming a lost motion connection between said second rod and rocker, a cam lever, a rod and crank connection between said cam lever and rocker and rolling stock supported means arranged for adjustment in line with said cam lever.

7. In an automatic railroad switch, a housing, guides formed therein, a switch bar held to move in said guides provided with a recess in one side thereof, springs held in said housing adapted to center said bar longitudinally thereof, a rocker comprising a pivoted disk having a segmental recess therein and oppositely disposed arcuate slots in the side walls of said recess, a latch pivotally mounted in said housing arranged to co-act with said recess and lock said switch in either open or closed position, a rod pivotally connected to said latch and rocker, a second rod ivotally connected to said bar and provide with an eyed end arranged to lie in the recess .of the rocker, a pin passing through said arcuate slots .and eyed end and forming a lost motion connection between said second rod and rocker, a cam lover, a rod and crank connection between said cam lever and rocker and rolling stock supported means arranged for adjustment in line with said cam lever comprising a fluid pressure supply, a fluid pressure cylinder, a valved connection between said supply and cylinder, a piston and rod held to move in said cylinder, and a contactin roller carried on said rod.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

WILLIAM HOLQUIST.

Witnesses:

ELMER HoL UIsr, C. E. DUPREE.