US1712495A - Stone-quarry skip car - Google Patents

Description

May 14, 1929. w. E. FARRELI.

STONE QUARRY SKIP CAR 4 Sheets-Sheei l Filed March l2, 1928 M u l l IHM! uw'www May 14, 1929. w. E. FARRELL STONE QUARRY SKIP CAR 4 Sheets-Sheet 2 Filed March 12, 1928 www May 14, 1929 w. E. FARRELL 1,712,495

STONE QUARRY SKIP GAR .Filed March l2, 1928 4 Sheets-Sheet 3 May 14, 1929. W, E; FARRELL 1,712,495

STONE QUARRY SKIP CAR vwamroz Patented Mey 14 19729.

UNITED STATES WILLIAM E. FATRELL, F EASTON, PENNSYLVANIA.

STONE-QUARRY SKIP CAR.

Application filed Maren 12,'1928. Serial No. 261,049.

The present invention relates broadly to railway cars and more especially to an industrial end dump car particularly adapted for stone quarries and usually referred to in the art as askip car.

Heretofore in the art, the most common type of skip car is one without an end door, and which car is adapted for use more esecially on an inclined track only, and is fed y some mechanism which drops the material into the ear while it stands in aninclined position. The prior art also shows skip cars provided with doors hinged at one edge, or otherwise hinged or mounted in such manner as to not be adapted for heavy rough usuage.

The present invention comprises an industrial car adapt/ed to be used on a horizontal track in a stone quarry or the like, and wherein a plurality of such cars may be coupled together to form a train. Each individual car also is adapted to be detached from the train and connected with a hoist cable whereby the car maybe pulled up an incline and automatically dumped at the upper end thereof. In connection with this car construction,

it is desirable that when thecar is on the ineline, that the hoisting power shall be ap plied back of the loadand to this end the car is provided with a bale which preferably 'eX- -ao tends substantially the full length of the car bodyand which is preferably connected to a shaft extending across the car back of the body near the bottom thereof. The car is provided with a door at one end of the body, which door is preferably mounted on arms which are hinged near the top of the car. This causes the door to swing upwardly and outwardly so that the opening movement enables the door to quickly clear the end of the car, thereby permitting a complete and rapid discharge of the contents of the car. This construction also permits the weight of the door and arms to press the 'door tightlyl against the end of the car and thus hold the door normally closed until it is positively opened.

The opening mechanism for the car door comprises contact members adjacent the upper edge of the door, which are in the path of the upward swing of the hoisting bale when the car comes to the upper end of the skip or hoist and reaches a portion of the track which causes the car to tilt or tip to discharge the contents thereof.- The contact members are preferably located near the upper part of the car door with a substantial dlstance between the normal position of the bale and the members so that the car takes a substantial' tipping position before the door starts to open. i This arrangement has the further advantage that any irregularities inthe hoist track which causes whipping orfbouncing of the bale will not in any wa: tend to open the car door, because of the substantial clearance between the bale and the door opening members on the door.

The foregoing preferred construction, as it'has been generally described, permits the location of the bale in the -most satisfactory position for hoisting the car; the location of the hinge of the door arms in the most desirable position for door operation; and permits the bale to lie/utilized for the double function of applying hoisting power to the car and for opening the door at thedesired moment while allowing freedom to the bale during normal operations.

Other and further objects will in part be obvious and will in part be pointed out `hereinafter in the specilication following by reference to the accompanying drawings forming a part of this application.

Realizing that the present invention may be embodied in constructions other-than those specifically disclosed herein, the disclosure is to be considered as illustrative and not in the limiting sense. .g

y Fig. l is a sideview .fof a car illustrating the preferred form of construction.

Fig. 2 is an end view of the construction disclosed in Fig. 1 showing a portion of the body frame and car broken away.

Fig. 3 illustrates a detail of one form of'y door hinge construction. A

Figs. 4 and 5 illustrate details showing modifications of the door operating member. Fig. 6 illustrates further details showing a modification of the door and bale construction, whereby the bale is held between guide,

The under frame carries a suitable draft gear comprising coupler heads'7 whereby the cars are adapted to be coupled together :in level trackage to form the trains whereby a whole 'train of cars may be brought to the skip or hoist. Elbow brackets 8 are riveted to the side of the side sills and carry vertical yangle irons 9, which lsupport the sides 10 of the car body and give rigidity to the body of the car. The sides of the load carrying body comprise iron or steel plates riveted to the vertical angle irons 9 and with the upper edge of the side plates turned over to form strong flanges 11 or channel members to support the upper edge of the car body. The back of the car is provided with vertically extending reinforcing frame members 12 with the back plate of the car also flanged over the frame members to complete the flange extending around the top of the body of the car. Preferably, though not necessarily, the upper portion of :the sides of the car slope gradually from lthe back to the front of the car so that when the car is on the inclined track, the load will be fully and properly supported in the body of the car.

The front end of the body of the car is normally open and is closed by a door, built up of framing members which may comprise I- beam structures 14 or other suitable members that are riveted to iron plates 15 forming the covering for the door and with the top and bottom of the plates flanged over the ends of the frame structure of the door frame, as at 16 and 17. This forms a very rigid solid door of relatively light weight. A lower arm 18 is riveted by a suitable reinforcing bracket 19 to the bottom edge of the door and at its upper end is 'riveted to a hinge plate 20. An upper arm 21 is also riveted or otherwise secured to the door frame and is likewise riveted to the hinge plate 20. The hinge plate 20 is pivoted on a suitable hinge pintle 22 carried by the hinge bracket 24 riveted on one of the uprights 9 to the body of the car.

Referring more especially to Fig. 3, it will I be observed that preferably the hinge pintle 22 comprises a bolt carrying a castle nut mounted under the flange 11 at the side of the car and supported at its inner end by a hinge bracket 26, riveted to the flange 11 and to the side plate 10 of the car. This forms a rigid i well protected hinge member adapted to stand rough usage to which quarry or mine cars are subjected.

Adjacent the front end of the upper arm 21 is a door operating mechanism which may comprise a shaft 27 extending through the l door' frame members 14and-carrying on each end. a door operating wheel 28. Thehoist power applying'mechanism comprises a long bale 29 which preferably extends the full length of the sides of the car and is mounted.

' near the lower portion of the body of the car so that the hoisting power is applied well down on the load, thereby preventing the hoisting power from applying a substantial component of force downward against the hoisting track as would be the case with the pivot for the bale 29 namely, the shaft 30, being located high on the car body. This hoisting bale normally rests on stops 32, which are riveted to the car body or the under frame as the case may be, and which normally support the forward end of the bale. This bale is provided with a cross member 34 having therein suitable hoist hook eyes or other constructions adapted for connection with the hoist cable.

Referring to Figs. 4 and 5, it will be observed that the door operating wheel 28 on the door adapted to contact with the bale has been replaced by a flanged bracket 35 having a rounded end surface adapted to contact with the bale 29. This construction is somewhat simpler than the wheel and shaft but lacks the anti-friction element, which the wheel provides, that is, in view ot the fact that the door swings on a short radius and the bale operates on a long radius, there is a relative movement between the top of the baleand the door operating member and in the case of the door operating wheel 28, the wheel may turn during the opening of the door. However, the rounded surface on the bracket 35 tends to roll and slide slightly on the top of the bale and affords a satisfactory construction for the purpose deslre In Fig. 6, guide rails 36 and 37 are provided to retain the bale definitely positioned relative to the side of the door. This construction has the advantage of preventing any side sway of the parts during the operation thereof and in this construction, the bale contacts with the top 38 of the guide rail 37 so that the bale slides on this portion of the guide rail in opening the door. In this construct-ion, the distance between the to of the bale and the door operating stop is somewhat greater than in the other constructions shown and permits the car to be tipped to a slightly greater angle before the door starts to open.

Referring now more specially to Fig. 7, the skip car is adapted to be detached from a train of cars on the level portion of the track 39 and to be attached to the hoist cable 40 by means of a coupler hook 41 or other suitable structure, which coupler hook is engaged with the eye in the bale 29. The hoist cable 40 is drawn over the sheave 42 by suitable hoist mechanism (not shown), thereby pulling the skip car up the inclined portion 44 of the track. As the car nears the top of the skip or inclined portion the tipping wheels 45, preferably carried by the bale shaft 30, engage with a tipping track 46 which tends to raise the rear of the car while the truck wheels of the car move down the inclined portion 47 of the track. This causes the body of the car to tip forwardly and causes a relativelmovelnent between the bale 29 and the bed ot' the car whereby the bale is in ell'ect raised relative to the car shown in dotted lines in Fig. l. It will be observed that the relatively short length of the door arms 19 and 2l as compared to the long length ol the bale .29 'causes the bale to swing on a large arc from the bale shaft and the door to swing in a short arc from the door pivot 2Q. This-action results in a quick opening o't` the door after the car has taken abpredetermincd tipped positiomand thereby causes a rapid clean dump ot' the material 4S t'rom the car. It will be observed that the car tips a substantial distance before the bale has contacted with the door operating members 28 so that the material 48 in the car leaves the car with a rush. action facilitates clearing the bed of the car of material in view of the fact. that if the material is permitted to leave very gradually, itvtends to slide` upon itself and may leave a portion of the material sticking to the car bed, whereas if the -material is suddenly released, it tends to move as a mass and thereby 'sweep the car bed clean. The

hoist' mechanism `now operates to permitl gravity to cause the car tomove down the skip track whereby it may be switched to v one side by a suitable switching trackage and lto - rigid, strong carof slm another loaded carpulled to the skip and dumped.

From the foregoing it will` be 'observed that the present invention grovides a very p e construction whereby the door is automatically opened at the proper moment to release the car load and whereby the car is of such construction that it `is particularly adapted for stone quarry work Having described my invention, I claim l. A skip car comprising a car body having an Vopen end, a door mounted on door arms pivoted to said car bodyA to permit said door to swing upwardly and outwardly, and a pivoted hoisting bale of greater length than the door arms and adapted to contact with said door and open the same when a predetermined angular relativemovement between said bale and said car body has occurred.

2. In a skip car, the combination of a ear body having an open end, a door` door arms connecting said door with pivots located adjacentthe upper mid portion ofsaid car body, a hoisting bale extending along said car body and pivoted" adjacent the lower rear portion thereof, and operating members carried by said door in the path of said bale, whereby said bale operates to swing said door to open position when a predetermined angular movement occurs between said bale and said 1 car body.

l 3. In a skip car, the combination of a car body having'an open end, a door pivotally mounted on said car body to normally close said open end and to swing'bodily upwardly and outwardly on opening movement, a hoisting bale VVpivoted tdtsaid car body and having a limited lreefmovement` and antifriction rollers carried by said door in the path of movement to said bale` whereby a movement of said bale beyond the limits of free movement causes said bale to contact with said anti-friction rollsand to open said door while said anti-friction rolls travel the said bale. et. In a skip car, the combination ofan open ended car body, a door normally closing said open end, a pair ofl arms secured to and carrying said door, said arms being pivoted to the car body adjacent the upper portion thereof,

a hoisting bale pivoted to said car body and of longer length than said door arms, and anti-friction rolls carried by said door inthe path of said hoisting bale whereby a predetermined angular movement between said car body and said bale causes said anti-friction rolls to engage said bale and roll upon the same while the angular movement of said bale opens said door.

5. InV a skip car construction, a car under frame, a load containing body on said under frame, one side of said body being open, a door normally closing said open side, door arms pivoted on the upper portion of said body and connected to said door whereby said door may be bodily swung upwardlv and outwardly tofopen the .end of said car body, a hoisting bale extending substantially the full length of said body and pivoted to a shaft extending across said car back of said body, ando erating members on said door in the path o said bale, whereby a predetermined relative angular movement between said bale and said ear body causes said bale to open said door.

6. In a skip car, the combination of an under frame, an open ended body on the under frame, a door closing said open end and pivoted to swing bodily upwardly and outwardly, and a hoisting bale pivoted to swing relative to said body, said bale being adapted upon a predetermined 'relative angular movement between said car and said bale to open said door..

7. A skip car and operating mechanism comprising in combination an open ended car body, a door hinged to the upper portion of said car body, an inclined track, tipping `means at the upper end of said inclined track hoist cable adapted to automatically open said door during the tipping of said-car body by said tip ing means. l

8. In a s ip car, an open ended car body, a door mounted upon arms extending along said car body 'and pivoted thereto whereby the weight of said door causes the same to be pressed against the end of said body, pivoted door opening means carried by said car, an operating abutment operatively connected with said door and in the path of said door opening means, the parts being constructed and arranged so that the angle of movement of said arms is greater than the angle of movement of said door operating means during the opening of said door.

9. In a skip car, the combination of an open ended body, a door for closing said open end, supporting arms for said door extending yalong said car body and pivoted thereto, a

door opening bale pivoted to said car body, and abutment means operatively attached to said door and in the path of said door opening bale whereby the said bale contacts with said abutment to open said door.

10. In a skip car and operating structure, the combination of a car body, track wheels mounted beneath said car body, a hoisting bale extending lengthwise of said car body and pivoted adjacent the-rear portion thereof, a door hinged to said car body, an inclined track, a tipping track adjacent the upper end of said inclined track, tipping wheels for cooperation with said tipping track` said tipping wheels being mounted upon the axis of said bale whereby the forces for tipping said car are applied directly to the axis of said tipping wheels, and means whereby said bale opens said door when said car is tipped.

WILLIAM E. FARRELL.

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