US1355337A - Stop - Google Patents

Description

K. T. HOFFMAN.

STOP.

APPLICATION FILED JULY29, 1919.

Patented Oct. 12, 1920.,

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STOP.

APPLICATION FILED IuLY29. 1919.

Patented Oct. 12, 1920.

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UNITED sTATEs PATENT OFFICE.

STOP.

Specification of Letters Patent.

Patented Oct. 12, 1920.

Application led July 29, 1919. Serial No. 313,980.

To all 107mm t may concern:

Be it known that I, KENNETH T. HOFF- MAN, a citizen of the United States, residing at Mount Vernon, inAv the county of Jefferson and State of Illinois, have invented certain new and useful Improvements in Stops, of which the following is a specification.

My invention relates generally to car stops and more particularly to an appliance for use in checking movement of railway cars without danger of injury either to the car or surrounding parts, my object being the provision of a friction stop which may, if desired, be controlled by the car itself while in movement and thus render it automatic in its action.

A further object is the provision of a car stop which may be arranged at various points adjacent the railway tracks at which car stops of this nature may be either desirable or necessary.

With these general objects in view, my invention resides in the car stop to be now described with respect to the accompanying drawings which form a part of this specilication and in which- Figure 1 is a side elevation showingthe practical application of my invention;

Fig. 2 is a top plan view of the invention at one side of the track or at one rail;

Fig. 3 is a vertical cross section taken on line 3 3 of Fig. 2;

Fig. 4 is a similar view taken on line 4-4 of Fig. 2;

Fig. 5 is a detail perspective view of the car-carried hook;

Fig. 6 is a detail side view of the automatic trip; and Y Fig. 7 is the top plan of the parts shown in Fig. 6.

Referring now to these gures, my invention is designed for'operation in connection with railway cars, one of which is generally indicated at 10 in Fig. 1, in order to show the manner in which the invention seeks to frictionally engage the sides of the car wheels 11. For the purposes of the invention frictional gripping members 12 are extended longitudinally along the outer sides of the rails 13, in the form of plates, preferably of metal, either with or without additional gripping Ameans upon their inner surfaces, these means being hinged by hinges 14, at spaced points along their lower edges, to the ties 15.

The frictional gripping members, which as above stated and as seen in Figs. 3 and 4, are hinged at-their lower ends adjacent to the rail bases, and which normally eX- tend outwardly beyond any point of possible contact with car wheels upon the rails, are shiftable to vertical or approximately vertical positions where they may engage the side faces of the car wheels. This shifting movement is communicated through longitudinally extending controlling rods 16, preferably of polygonal form to obviate rotation, and these controlling rods extend adjacent to the outer faces of the'frictional engaging members 12 and through bearing blocks 17 securely fastened upon certain of the tie ends. At spaced points the controlling rods 16 have secured thereto controlling blocks 18, which it will be noted'from Fig. 1 showing the Vnormal inoperative positions of the parts, are positioned adjacent the tapering engaging members 19 rigidly secured to the outer side faces of the friction plates 12 so that by shifting the controlling rods 16 in the direction of their length, these controlling blocks may be caused to ride the inclined faces of the members 19 so as .to shift the friction engaging members 12 from the inactive inclined positions'of Fig. 2, to the active approximately vertical positions of Fig. 3.

Along its upper edge and spaced therefrom, each of the friction engaging plates 12 preferably has a series of curved brackets 20, the upper ends of which are rigidly attached to and support a limiting rail 21, in such manner that a longitudinal space remains between the limiting rail and the upper. rigid edges of the frictional engaging member 12 to provide for the reception of the lower angular extension 22 projecting outwardly from a car-carried bracket 23, such as seen in the detail Fig. 5, the upper portion of which bracket is rigidly secured to a car. The car-carried member 23 is thus in the nature of a hook, engageable with the limiting rail 21 when the frictional engaging plate 12 is in its vertical operative position so as to avoid all danger of a car riding upwardly between the opposite frictional gripping plates, due to its momentum. In this way I avoid all `danger of derailnie'nt of a car and maintain the same firmly upon the rails 13, to assist which vertical rigid guard plates-24 may be secured to upstand along the inner sides of the rails, as seen particularly in Figs. 2, 3, and 4L.

It is obvious, for the purposes of the invention, the controlling rods 1G may, if desired, be manually controlled through any suitable connection, for instance, from a warehouse platform adjacent to which the trip stop may be mounted, or from a switch tower. My invention contemplates, however, that the trip stop may be controlled automatically by means of a car-actuated or shifted trip arm 25, such as seen in Figs. 6 and 7, normally upstanding from a shaft 26, at the opposite ends of which inclined arms 27 project and are pivotally connected to pivoted portions 16a of the ends of the side controlling rods 16, each of the said controlling rods having a pivoted pawl or dog 28 engaging an arcuate ratchet 29 so as to hold the same in the effective position to which they may be moved by car engagement and actuation of the trip arm 25.. rlhis trip mechanism, it will be observed, is similar to, and may be utilized in connect-ion with or as a part of, automatic switchthrowing, if sov desired.

It is obvious from the foregoing that with the frictional gripping plates in the inoperative position shown in Fig. 2, cars may proceed upon the rails 13 without danger of accidental engagement, whereas upon lengthwise shifting movement of the controlling rods 16 these engaging plates may bey moved inwardly to their effective positions,kshown in Fig. 3, where they will engage the outer faces of the car wheels below the axles, bytheir Vfrictional pressure, andwill gradually bring the car to a stop rendering the invention particularly reffective adjacent to warehouse and factory platforms, as well as in connection ,with what are known as hump switches.

It is also obvious that my invention as shown and described is particularly adapted and applicable to mine cars for checking loaded cars under manual control of the eager, adjacent to the mine cage, to prevent .for a time movement onto the cage or accidental movement into the sump under the cage.. My invention is thus applicable to all rail grades for railways or mines and l wish to be understood as claiming the same A1n all uses to which it is apparently adapted.

I claim: l. A car stop for use 1n connection with railway rails vcomprising carkwheelsv engaging friction plates hingedly mounted at opposite sides of the rails and along their lower edges, and movable at their upper edges toward and away from the rails, limiting rails mountedV along the said upper edges ofthe said friction. plates and in spaced relation thereto, andV car-carried means coperating with said limiting rails to prevent the car wheels from climbing between the friction plates, as described.

2. A car stop for railway rails comprising car wheels engaging friction plates hinged attheir lower ends to tics supporting the rails and movablel at their upper edges toward and away from the rails, supporting blocks upstanding from spaced rail-supporting ties outwardly beyond the said friction plates, a controlling rod having non-rotatable bearings through the said blocks andv disposed parallel' to the said friction plates, coperating cams carried by the friction plates and the said controlling rod for shifting the former toward the rails and into active position upon longitudinal movement of the latter, and means for shifting the said controlling rod, as described.

Y 3. A car stop for railway rails comprising car wheels engaging friction plates hinged at their lower Vends to ties supporting the rails and movable at their upper edges toward land away from the rails, supporting blocks upstanding from spaced rail-supporting ties outwardly beyond the said friction plates, a controlling rod having non-rotatable bearings through the said blocks and disposed parallel to the said friction plates, coperating meansv carried by the friction plates and the said controlling rod for shifting the former toward the rails and into active position upon longitudinal movement of the latter, and car-actuating means for automatically shifting the said controlling rods, as described.'

4l. A car stop for railway rails comprising car wheels engaging friction plates hinged at theirlower ends to ties supporting the rails and movable at their upper edges toward and away from the rails, supporting blocks upstanding from spaced rail-supporting tiesV outwardly beyond the said friction plates, a controlling rod having non-rotatable bearings through the said blocks Vand disposed parallel to the said friction plates, coperating 'meansy carried by the friction plates and the said controlling rod for shifting the former toward the rails and into acltive position upon longitudinal movement of the latter, and car-actuating means for automatically shifting the said controlling rods, said last-named means including a trip-shaft having a car-actuated trip arm andl provided with arms pivotally c onnectedto the said controlling rods, and means for locking the controlling rods in active position, asdescribed.

5. A car Ystop for railway rails comprising car wheels engaging frictionplates hinged rails and movable at their upper edges toward and away from the rails, supporting blocksupstanding from spaced rail-supporting ties outwardly beyond the said friction plates, a controlling rod having non-rotatable bearings through the said blocks and disposed parallel to the said friction plates, cooperating means carried by the friction plates and the said controlling rod for shifting the former toward the rails and into active position upon longitudinal movement of the latter, and car-actuating means for automatically shifting the said controlling rods, said last-named means including a trip-shaft having a car-actuated trip arm and having arms pivotally connected to the said controlling rods, and rigid for holding the controlling roes in operative position, as described.

6. :i car stop for railway rails comprising car wheels engaging friction plates hingedly mounted along their lower edges, parallel with and adjacent to the rails for movement at their upper edges toward and away from the rails, means for shifting said friction plates with respect to the rails, limiting rails carried by the said friction plates and in spaced relation along the upper edges thereof to form lengthwise slots, and car-carried hook members having lower angular portions arranged to extend into the said slots when the friction plates are in effective positions, wherebyto cooperate with the limiting rails and prevent the climbing of the car wheels between the friction plates.

In testimony whereof I afx my signature.

KENNETH T. v HOFFMAN.

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