US1617574A - Dump-door-operating mechanism - Google Patents

Description

Feb. 15 1927.

' 1,617,574 A. CAMPBELL DUMP DOOR OPERATING MECHANISM Filed Feb. 7. 1925 2 Sheets-She et 1 INVENTOR. QYLEZXMPBaL #15 ATTORNEY 192 GT7 5 74 Feb 7 A. CAMPBELL,

DUMP DOOR OPERATING MECHANISM 2 Sheets-Sheet 2 Filed Feb. 7, 1925 m m m m ARGYLE CAMPBELL BY 9/4 HIS ATTORNEY.

Patented Feb. 15, 1927.

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A-R'GYLE CAMPBELL, OF orrrcnco, in tiators, nests-non ro nnannnmsn RAILWAY:

EQUIPMENT company, or CHICAGO, runners, A CORPORATIONAIIOFILLINOIS..

I DUMP-nooR-ornnATINe I M-EcHANisM.

. a licat on area February 7; 1925. Serial No. 7,464. I

This invention relates to improvements in dump door operating mechanisms. The invention more particularly relates to the means forllocking and operating car door winding shafts and is particularly adapted "to the type of car having a series of doors hinged longitudinally of the car and adapted to be operated from aposition adjacent the side of the car. 7

Among the objects which my invention attains is that of improving the method of mounting locking and operating means with respect to a ratchetwheel on the op erating shaft, whereby two pawls may be conveniently disposed in the same plane and a'single ratchet wheel utilized for rotating the operating shaft and also for looking it in position. I

It is also a furthero'bjeot of my invention to disposethe said operating and allied parts in such a manner as to obviate the necessity of having the parts projecting 'be yond the plane of the car'ends when such operating mechanism is used on dump cars having dump doorsextending from end to end of the car body and thus assure the safety and convenience o'ftrain men in the discharge of their duties.

Further my invention resides in certain other features and details such as will hereinafter be more fully pointed out and claimed.

i In the d'rawings, Fig. 1 is a vertical side elevational view illustrating the end of a dump car of'a type to which my improvements are particularly adaptable. Fig. 2 is a vertical end elevational view of slightly lessthan half of the end of the car illustrated in Fig. 1. Fig. 3 is a vertical sectional view of a portion of the car illustrated in Fig. 1 and taken on a line corresponding substantially to line 3-3 of F g. 1. Fig. 4 is anenlarged view of the portlon of the car illustrated in Fig. 1 illustrating the corner of the car with my improved construction associated therewith and 5, is an end elevational view of a portion of the end of the car, illustrating the con-V struction shown in Fig. 4, as seen when viewing the end of theca'r. I a

In the drawings 10 represents the vertical side wall of the car having an inwardly bent lower portion 11 side stakes 12, vertical end walls 13, hodybolster 14L, end sill 15, center sill 16 and dump doors 17-17,

mounted on the shaft-,18 a ratchet wheel 33 r ce. j

An operating shaft 18 eirtends along the side of the car body beneath"lthe'inwardly inclined floor 11, and operates in suitable; ournals provided therefor. The {doors 17 17 are each' operatively connected to the shaft 18 by self-locking linkage -'rnechalnisms 19l9,which may 'be 'ofanysuitab' le kind.

Adjacent the end of the car beef-areangl-e irons 20 and 21 which are secured to and depend from the vertical sidewall 1Q, said angles being spaced aparta suitable distance to form vertical stiles .to which grab irons 22, and sill step 23, are secured.

Said angles are further connected across strap 24, to which is attached a foot guard 25, for the" purpose of eliminating danger to train men incidental to the opening of the 1 dump doors. As will 'befnoted, the angle iron 21 is removed from the end of the car a distance designated ,by: the reference character 26, and is connected to the inwardly deflected portion 11 of the car side by'a transversely extending plate :27," which is riveted to the angle 21,- as shown at 2'8, and is provided with a flange 29 adjacent the portion 11, which is riveted thereto as indicated at 30. The plate 27 is perforated, and the shaft vl8 extends therethrough and terminates an appreciable distance from the end wall of the car. The shaft 218 is adapted to be supported at the end of the versely extending plate, 27 as'at 1'33.

' Adjacent to the. plate 27, there is fixedly having hubs extending on the opposlte sldes ly. The hub 34 is extended longitudinally accommodate heads of saiol'rivet. Rotation ofv the shaft isf'effec'ted by means of oscillatable mechanism. designated genthereof as indicated at 34 and 35 'respectiveerally by the reference character'A. The

mechanism A 'includes walls 38 and 39 respectively disposed on opposite sides of the ratchet wheel 33; The wall 38 is" disposed between the plate .27 and thelratc'het wheel 33, and pivotally mounted on the hub '34of the. ratchet wheel 33. Preferably formed integrally with the wall 38, are b"osses 4.'0

40 which act as spacers between the respec- Q influence of gravity is normally urged into i tiveoscillatablewalls 38Yand 39. Pivotall V mounted upon one of saidbosses is anope'rat ngpawl ll-said pawlbeing arranged to' engage the ratchetlwheel '33 ,for rotating the SaIDGJZlIl either .direction. The, respective. V walls'38and 39 are united by means of rlvets r .42. which preferably extend therethrough' 1 and through thebosses 40- 40, The outer 'wall'39 which is mounted adjacent the end I {If adrumlike portion 43 which extends out wardlylon gitudinally ofthe shaft, and outof the shaft .on the hub 35, is formed with f wardly from theratchet wheel 33, thereby rovi'ding"additional bearing areaon the is formed integrally therewith, a hollow ub; 35, and beyond said portion 43, there 7 socket 'portionjtt, adapted to receive an operating bar, whereby rotation of the shaft 'is efie cted. The'socket portion a4 is disposedto one side of the ratchet wheel 33, and the operating, pawl 41, thereby pro- ,viding for an unobstructed sweep of the latter as indicated by the circle 45 in Fig. 5,

"and a preferred-location for the socket portion is centraIly of the center of rotation. of the shaft adjacentthe end of the same, and within the. plane of the, car end wall.

Y TheI means employed for securing the shaft against rotation during the operation of the mechanism and also fonlocking the same in finally' closed position, is indicated generally by the. reference character B, and includes a locking pawl 46, and 'a locking cam 47, pivotally mounted between the transverse plate 27. and a spaced bracket 48.

' The bracket .48 is preferably of angle shape,

7 ,one flange 49 thereof being secured to the V inwardly directed sloping floor 11, and the other flange 50 being vertically disposed and extending outwardly from said. flange (19. The flange 50 .is provided with a depression or pocket 51 in its upper side for V a purpose hereinafter described.

The pawl 46, a d cam 47, are respectively Qmounted on pivots and 52 which extend 7 through the transverse plate 27 and vertical flange 50 of the bracket 48. .The' locking pawl 46 is adapted to engagethe upper sur ace of the wheel, and said pawl under the locking. engagement with the ratchet wheel 33. In order to hold thepawlout ofengagement with the ratchet wheel, when' it is desired to release the mechanismpthere is provided a lip 54 at the outer end of the pawl, under which the curved portion 55 of the came? adapted. to engage. During the raising operation of the doors, however,

' "there is ratcheting action betweenothe teeth of the ratchet wheel 33 and the pawl 46 F rendering it necessary; that the cam .47 be swun clear of, and away from the pawl 46, and or this purpose the cam is adapted to ,bt rotated to the position indicated by [dotted linesin Fig.5, in which position the lateral extension 56, formed on the 0am,

rests in the pocket 5lheretofore referred to The recessed portion formed in the flange n50 by the pocket 5 l also affords great conand 58 are provided on the 'iespecti've pawl and 'cam. which effectively servefto maintain the parts in the desired correct'relationship. It will thus be seen that'thisarrangement of locking and rotating mechanism where a single ratchet wheel is utilized both for locking and operatingenables thesame to be disposed in a very small space and does away with the necessity of placing the,

ladder unduly far from theend'of the car while'at the same time assuring that the parts do not project beyond the end of the car.

' Although I have scribed my invention as embodied in the preferred form, the same is merely illustrative and I contemplate all changesand modiherein shown and 'defications that come within the scope ofthe claims appended hereto.

What I claim is: o 1. In a dump car door operating and locking mechanism, the combination with a car side wall; of a plate extending outwardly from the car; an operating shaft passing through the said plate;'a ratchet wheel on the shaft adjacent said plate abracketdisposed above theshaft, spaced from said plate,

and secured to the'car side wall and project posed between said bracket and plate and 'pivotallyeonnected' thereto, said means including a locking pawladapted for engagement with the ratchet wheel and a' locking ing outwardly therefrom; locking means disk cam adapted to lock the pawl relatively to I the wheel, said pawland cam having interlocking portions whereby the pawl may be maintained out of its engagement with the ratchet'wheel; and means associated with said bracket whereby the pawl may be maintained out of its engagement with the locking pawl. 1 i

2. In a dump car door operating mechanism, the combinationwith a ratchet wheel; ofa transverse car wall; a longitudinal shaft rotatably mounted in said transverse wall; V

a, ratchet wheel rotatable-in unison with the "1V .40

shaft; a pawl pivotally mounted on the transverse wall and adapted'to loclrthe ratchet. against rotation; a cam, pivotally.

-mounted on the transverse wall and adapted I to lock the pawl with respect tothe ratchet f 0 wheel; co-operat-lng meansbetween said cam I if) and pawl whereby the pawl may be held in released position with respect to the ratchet wheel; a bracket having a portion overlying the cam and pawl, said bracket having'also a portion secured to a side wall of the car; and a projection on the cam in alignment with the said overlying portion of the bracket whereby the said cam may be supported in overbalanced inoperative position.

3. In a dump car door operating mechanism, the combination witha side wall having an inwardly bent lower portion; of a transverse bracket plate extending outwardly from said side wall; a door operating shaft extending through said transverse bracket plate; a ratchet wheel on the shaft adjacent the said plate; an angular shaped bracket secured by one of its flanges to the sloping side wall and having the other of its flanges extending outwardly from the car; a locking pawl and a locking cam disposed between said bracket plates and pivotally mounted therebetween said locking cam having a lateral extension adapted to be engaged by the a side wall having an inwardly bent portion,"

of an operating shaft extending longitudinally beneath the same; a transversely extending plate through which the shaft passes; a ratchet wheel fixedly mounted on the shaft, said ratchet wheel having hub portions on opposite sides thereof, one of said hubs being extended longitudinally through the plate and secured to the shaft on the side of theplate opposite to the ratchet wheel; shaft rotating means rotatably mounted with respect to the ratchet wheel,-

7 said means including walls respectively disposed on opposite sides of the ratchet; a pawl pivotally mounted'between said walls and adapted to have clutch engagement with the ratchet wheel; a socket portion'disposed on the outer of said walls said socket portion being intermediate the end of the shaft and a plane defining the end of the car; and

shaft locking means including; a pawl and cam, said pawl being adapted to'engage the upper face of the 'ratchet, and said pawl and cam being pivotally mounted between v the said transverse plate, and a bracket carried by the inwardly deflected portion of the car side. L

5.111 a dump car door operating mechanism, the combination with a shaft having shaft, and having portions offset with respect tosaid shaft; an operating pawl pivotally carried by one of said offset portions; means on said actuating device disposed coaxially therewith, for the reception of an operating element; a 1 locking pawl overlying said ratchet member and co-operatingztherewith; a support; and an element pivotally mounted on said support and in'depending position co-operating with said locking pawl to con 'trol the position thereof, said element being swingable out of engagement with, said lockingpawl to an overbalanced position with reference to said support so as to be held in inoperative position thereby.'

6. In a dump car, the combination witha side wall having an inwardly bent portion,

of an operating shaft extending longitudinally beneath the same; a ratchet wheel fixedly mounted upon said shaft; a bracket aflixed to the inwardly bent-portion of the car side, said bracket having a portion extending outwardly from the car side and overhanging said ratchetvwheel; a locking pawl pivotally mounted on said bracket andcooperable with the ratchet member to prevent rotation thereon; and an elementpivi otally mounted on said bracket and in depending position cooperable with said locking pawl to control'the position thereof, said element being swingable out of engagement with said locking'pawl to an overbalanced position with reference to the bracket so as to be held in inoperative position thereby,

In witness that I claim the foregoing I- have hereunto subscribed my name this 5th day of February, 1925. i V

i ARGYLE CAMPBELL.

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