US1899525A

US1899525A - Automatic rail locator for brushes of fissure detector cars

Info

Publication number: US1899525A
Application number: US436822A
Authority: US
Inventors: Walter M Perry; George L Jones
Original assignee: Sperry Products Inc
Current assignee: Sperry Products Inc
Priority date: 1930-03-18
Filing date: 1930-03-18
Publication date: 1933-02-28
Anticipated expiration: 1950-02-28
Also published as: FR714516A; GB372474A; DE571902C

Description

AUTOMATIC RAIL LOCATOR FOR BRUSHES OF FISSURE DETECTOR CARS Filed Mar'h 18., 1930 2 sneets-sheet 1 INVENTORS l MQL Tfr? M wmf Feb. 2s, 1933.

rw. M. PERRY ET AL 1,899,525

AUTOMATIC RAIVL'LOCATOR FOR BRUSHES OF FIssURE DETECTOR 'GARS 2 Sheets-Sheet 2 Filed March .18, 1930 I" E VO t N VIMW 66 52 illmlllgl E r r 6/ 60 INVENTOR TTORN EY- Patented Feb. 2s, 1933 UNITED STATES PATENT OFFICE WALTER M. PERRY, F BROOKLYN, AND GEORGE L. JONES, OF EAST WILLISTON, NEW YORK, ASSIGNORS, BY MESNE ASSIGNMENTS, TO SPERRY PRODUCTS, INC., OF BROOK.-

LYN, NEW YORK, A CORPORATION OF NEW. YORK AUTOMATIC RAIL LOCATOR FOR BRUSHES OF FISSURE DETECTOR CARS Application led March 18,

T his invention relatesto rail flaw detectorl cars` which carry rail iaw detecting mecha'- nisin adapted to be raised and lowered with respect to the car. rThe problem presents itself, when the car is travelling around a curve, of lowering the detector mechanism so as to locate the rails properly, because it will be understood that if the contact mechanism, when lowered vertically, is designed to engage the rails when the car is travelling on a straight portion of track, such vertical movement will not cause engagement of the Contact mechanism with the rails when the'car is travellingaround a curve. This invention has for its object, therefore, the provision orm means whereby the detecting mechanism may -be lowered to eiiective position to insure rapid engagement of said mechanism with the rails.

Vde have disclosed two orms of our invention applicable respectively to cars of relarention will become apparent in the following detailed description thereof.

In the accompanying drawings,

Fig. 1 is la side view of a car itted with a form of Sperry detector mechanism.

Fig. 2 is an enlarged view of a portion of the detector mechanism partly sectioned vertically and disclosing the means for lowering the mechanism to the track.

Fig. 3 is a front view of one form ofmechanism for locating the iaw detecting mechanisxn with respect to the rails.

Fig. a is a detail showing the means for maintaining the guide wheels of the detector mechanism normally in elevated and outward positions.

Fig. 5 is a side view of anotherform of locating mechanism designed to be employed upon cars of relatively great length.

Fig. (5 is a plan view of the Fig. 5 the invention.

Referring to Fig. 1 of the drawings, we have shown a car of relatively long wheel form of 1930. seria No. liaaaa,

base mounted on front and rear trucks 11-12 and supporting the rail flaw detector mechanism, indicated generally by the numeral 13. Said mechanism, as is wellknown and as shown in copending application of Elmer A. Sperry, Serial No. 215980, filed August 27th, 1927, comprises essentially a means within the car for generating electric current for delivery to contact brushes 1 5, 16 for supplying said current to the rail, a contact brush holder 17 being adapted to be raised to inefective position and lowered to eective position, said holder being provided with wheels 18 designed to run upon the rail, and a detector carriage 20 supported upon the brush holder 17. As shown in Fig. 4 the entire mechanism-is intended to be held normally in elevated or ineifective position by means such as spring 21 and cables 22, so positioned that the holder 17 is normally biased toward elevated position and the wheels biased to swing upwardly and .outwardly away' from the rails. When it is desired to lower the detecting mechanism to effective position, that is, into engagement with the rail, iiuid pressure operated means, Such as the cylinder 25 in which operates a piston 26, said piston being connected through a piston rod 27 to the contact brush holder, is supplied with fluid under pressurefto drive the piston downwardly and hence lower the --contact brush holder and hold thesame firmly against the rails during operation.

If the car travelled always on straight track only, the flaw detecting mechanism could be lowered vertically into direct contact with the rails. However, there is usually a relatively small proportion of straight track and the device must be capable of operating on curved track as well. As pointed out hereinbefore in travelling around the curve, the wheels 18 of the detector carriage at either side ofthe car would fall inside and outside of the rails respectively, and on a curve of suiicient degree .of Vcurvature the iange 30 of the inside Wheel might land directly on the rail or even outside the rail and prevent lowering of the carriage into its proper eiective position where it may run along the rails. j

wardly into engagement with the rails. lt

will be understood that the mechanism shown in Figs. 1 and 2 represents the flaw detecting means .at one side of the car adapted to engage one rail and that this mechanism is 10 duplicated on the other side of the car in eXact alignment with the mechanism on the rst side and is adapted to engage the other rail. The following description will describe the locating means for the Haw' detecting mechanism at only one side of the car, and it is understood that this mechanism is duplicated but positioned to act oppositely with respect to the flow detecting mechanism on the other side of the car. In the Figs. 2 and 3 form of the invention, the two Haw detecting mechanisms at the two sides of the car are independent of each other, while inthe Figs. 1, 5 and 6 form they are interconnected.

Referring rst to the form of the inven tion disclosed in Figs. 2 and 3, it will be seen that the entire mechanism, including the wheels 18, contact brush holder'17, the detector sled 2O which it supports, and the air cylinder 25 with its connecting rod 27, are mounted for universal movement by cylinder 25 being journaled in ring 28 by trunnions 29 (see Fig. 6), said ring being journaled by trunnions 34 in bearings 35 at right angles to bearings 29, and fixed to the underside of the` car by suitable means such as brackets 36. It will be understood that the cylinder 25 at each end of the detecting mechanism is so journaled that the entire detecting mechanism may be swung laterally with respect to the car and the rails about the said pivots 34. Since the springs 21 normally bias wheels 18 outwardly vwith respect to the rails, it is necessary inlowering, in order to insure that flange 30 will not fall directly on the rail head or outside of the rail, especially when going around curves, that the said wheels be moved inwardly during the lowering operation until the peripheries 37 of the wheels touchthe rails and then said wheels may be moved outwardly until flanges 30 engage the rail heads. This action consists broadly, therefore, in swinging the detector mechanisms at each side of the car inwardly as they are lowered, until'the wheels engage the rail heads and then in the final lowering operation spreading the detecting mechanisms until the flanges 37 come in contact with the rail heads. We accomplish this rresult by providing at each side of the car and adjacent the front and rear endsV of the contact brush holder 17 a cam 40 (see Fig. 3) fiXed to the under side of the car as by brackets 41-42 and having a two-part cam face 43-44 with which is adapted to engage a roller 45 carried on the upper end of a ride down oppositely inclined faces 44 the said detector mechanism is swung outwardly again by the pressure of spring 21 until the flanges 30 strike the rail heads. It will thus be seen that during the very last portion of themovement when the contact brush holder 17 is completing the last portions of its downwa rd movement into engagement with the rails, the wheels 18, which had previously engaged the rail heads, are now moved upwardly with respect to the contact brush holder, as the latter completes its downward movement, and outwardly until the flanges 30 strike the rail heads. A further cam face 47 is provided on each cam member 40 to prevent rollers 45 from passing be ond the cam 4() to an inoperative position. flange 48 on the cam member 40 acts as a bu'er to limit thel backward movement of the contact brush holder caused by drag thereof on the rail.

In the above description it will be noted I that the wheels on the inside of a curve, which would ordinarily land with the wheel flanges on the rail or outside of the rail, are moved inwardly to insure the wheel flanges falling between the rails. side wheels whose flanges would normally fall within the rails are moved still-further inwardly but this does not result in the outside -wheels falling within the rail and out of contact therewith because the peripheries of the wheels are very broad, running as high as seven or eight inches in width.

In cases where the degree of curvature is so great that there is danger of the wheels on the outside of the curve leaving the track all together, we provide the form of the invention disclosed in Figs. 1, 5 and 6.' In this form, instead of the'cams 40 and their supporting

struts

41 and 42 being fixed to the bottom of the car, they are pvotally connected thereto, andall of the cam members at both sides are interconnected by.a. horizontal frame 50 (see Figs. 5 and 6) so that all of the cam-members will swing together with a parallel motion. The said aframe is designed to be located with respect to the rails by means of a pair bf auxiliary locator wheels At the same time the out- 60 which are pivoted at 61 in arms or meml bers 62 so that they may be raised or lowered bymeans of a cable 63 extending into the car so that it may be wound upon a drum 64 by a handwheel 65 against the action of a that when, the frame 50 is swun restoring spring 66. The said arms62 are connected to the frame 5() at their lower ends and pivoted beneath thecarbody at 70 so it will be swung about the four pivots 70. y looking through an observation window 71 in the floor of the car the operator can swing the said frame about the said pivots by operating a handle (not shown) fixed to a shaft 72 which carries a crank 73 pivoted to a cross bar 74 attached to the frame 50. .It will be seen that by rotating shaft 72 the operator within the car can swing the entire frame 50 and hence the/lqcator wheel until said wheels are directly over the rails and said 'wheels may then be lowered by rotating hand wheel 65. With the wheel 60 inv engagement with the rails the wheels 18 have been corre spondingly located with respect to said rails because the cams 40 which guide the move.- ment of saidwheels are likewisel carried by the frame 50,\'s0 that while wheel 60 roughly locates the flaw detecting mechanism with respect to the rails, the cams 40 will serve to take care of the deviations of the wheels 18 due to ordinary curves. Instead of the'supports41-42 being fixed to the underside of the car they are pivoted at 7 5 7 6 .respectively.

In accordance with the provisionsP of the patent statutes, we have'herein described the principle and operation of our invention, together with the apparatus which we now consider to represent the' best embodiment thereof, but we desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by other means. Also, whileit is designed to use the various features and elements 1n the combina# tion and relations described, some of these may be altered and others omittedA without interfering with the more general lresults, outlined, and the invention extends to such use.

Having described our invention, what we claim and desire to secure by Letters Patent is:

1. In combination, a rail flaw detecting .mechanism adapted to be mounted on a car,

means whereby said mechanism may be raised to ineifective position, means whereby said mechanism may be lowered to effective position, and means whereby said mechanism during movment thereofto eifective position. isl moved laterally so as to insure engagementI thereof with said rails.

2. In combination, a rail daw detecting` mechanism adapted to be mounted on a car, means whereby said mechanism may be raised to ineffective position, means whereby said mechanism may be lowered to effective positibn, and means whereby said mechanism is moved inwardly during movement thereof to effective position so as to insure engagement thereof with said rails.

3. In combination, a rail aw detecting mechanism adapted to be mounted on a car,

means whereby said mechanism may .be

raised to ineffective positions, means whereby said mechamsm may be lowered to effective position, and a cam, said mechanism engaglowered to effective position, means whereby said mechanism is moved inwardly during the downward-movement-thereof until said' members engage the rail, and means whereby said mechanism is then moved outwardly. 5. In combination, a rail flaw detecting mechanism adapted to be mounted on a car, said mechanism including'a plurality of rail engaging members, means whereby. said mechanism may be raised to ineffective position, means whereby'said mechanism may be lowered to effective position, a cam, -said mechanism engaging said cam during movement lto effective and ineffective positions, said cam having a plurality of'faces of differentkin'clinations whereby said mechanism isT moved inwardly duringV the downward movement thereof until said members engage the rail and then moved outwardly.

. 6.V In combination, a rail iaw detecting mechanism adapted to be mounted on a car said mechanism including a plurality of wheels adapted to engage the rail, said wheels having anges, means whereby said mechanismmay beY raised to ineffective position, means whereby said mechanism may be lowered to effective position, means whereby said mechanism is moved inwardly during downward' movement thereof until said wheels engage the rail, and means whereby said mechanism` is then movedoutwardly until said ianges engage the rail.

7. In combination, a rail Haw detecting mechanism adapted to `be mounted on a car, said mechanism including a plurality of wheels adapted to engage the rail, said wheels having tlanges, means whereby said mechanism may be raised to ineective position, means whereby' said mechanism may .be lowered to edectve position, a cam, sa-id'mechanism engaging said cam during movement to eiiective and ineii'ectivepositions, said cam having a plurality of faces of dii'erent inclinations whereby said mechanism is moved inwardly during the downwardv movement 8. In combination, a rail flaw detector car having a rail flaw detecting mechanism at each side thereof'for engaging the respective rails, means whereby said mechanism may be raised to ineffective position, means whereby said mechanisms may be lowered to effective position, and means whereby said mechanisms are moved inwardly and toward each other during downward movement thereof.

9. In combination, a rail flaw detector car having a rail flaw detecting mechanism at each side thereof, each of said mechanisms having a plurality of rail engaging members, means whereby said mechanisms may be raised to ineffective position, means whereby said mechanisms may be lowered to effective gage the rails, each of position, and means whereby said mechanisms are moved inwardly and toward each other during downward movement thereof until said members engage the rails and are then moved outwardly and away from each other.

10. In combination, av rail aw detector car having a rail flaw detecting mechanism at each side thereof, each of said mechanisms having a plurality of wheels adapted to ensaid wheels having a flange, means whereby said mechanisms may be raised to ineffective position, means whereby said mechanisms may be lowered .to effective position, and means whereby said mechanisms are moved inwardly and toward each other during -downward movement thereof until said wheels engage the rails and are then moved outwardly and away from each other until said flanges engage the rails.

11. In combination, a rail Haw detector car having a rail Haw detector mechanism movably connected therewith, means whereb y said .mechanism may be raised to ineffective position, means whereby said mechanism may be lowered to effective position, and a locator for said mechanism connected thereto, said locator being movably connected to said c ar and adapted to engage the rail for positioning said rail.

12. In combination, a rail flaw detector car having a rail flaw detector mechanismrmovably connected therewith, means lwhereby said mechanism may be raised to ineifective posltlon, means whereby said mechanism mechanism with respect to the I reaaaaa whereby said locator may be raised and lowered,and means within the car whereby said locator may be moved laterally with respect to the car and the rail to engage the rail and be raised to ineffective position, means whereby said mechanisms may be lowered to effective position, a frame interconnecting said mechanisms, said frame being pivoted on said car for movement laterally with respect to the car and the rails, a locator for said mechanisms connected to said frame, and means whereby said locator may be moved with respect to the car and the rails to engage the rails and position said frame and said mechanisms wlth respect to the rails.

15. In combination, a rail flaw detector car having a rail Haw detecting mechanism at each side thereof for engaging the respective rails, means whereby said mechanisms may be raised to ineffective position, means whereby said mechanisms may be lowered to effective position, and means whereby said mechanisms are moved inwardly and toward each other during downward move' ment thereof, a frame interconnecting said mechanisms, said frame being pivoted on said car for movement laterally with respect to the car aii'd the rails', a locator for said mechanisms connected to said frame, and means whereby said locator may be moved with respect to the car and the rails to engage the rails and position said mechanisms with respect to the rails.

In testimony whereof we have affixed our signatures. v

WALTER M. PERRY.` GEORGE L. JONES.

maybe lowered to eective'position, a locator ably connected therewith, means wherebyy said mechanism may be raised to ineffective position, means whereby said mechanism may be lowered to effective position, a locator for said mechanism connected thereto, means