Патент USA US2407932код для вставки
Sept. 17, 1946. A. A. L_.A PQINTE _ 2,407,930 `SHOVEL Filed Maren 9, 1945 3` Sheets-Sheet 1_. Sept. 17, 1946. 2,407,930 A. A. LA POINTE SHOVEL Filed March 9, 1945 5 Sheets-Sheet 2 :li ’ 'lm/ENTOR. „Äbeffß La Poinfe BY Sept. 17, 1946._ A_ A_ LA POlNTE ` 2,407,930 SHOVEL Filed March 9, 1945 3 Sheets-Sheet 3 2,407,930 Patented Sept. 17, 1946 iJNlTE STATES PATENT OFFICE e 2,407,930 " SHOVEL ~ Albert A. La Pointe, West Hartford, Conn., as signor to La Pointe Engineering Gompany, Unionville, Conn., a copartnership ` Application March 9, 1945, Serial No. 581,729 5 Claims. (Cl. 214-81) 1 _This invention relates to Vpower shovels. mechanism of the device; . ~The principal object >of the invention _is to pro vide _a power shovel which may be operated in l-ar view in Fig. 2; and Fig. 8 is a side'view of >a locking Vmechanism for use in connection with the catch mechanism . Another object of the vinvention is to provide shown in similar view in Fig. 1. a power `shovel which operates in combination with a .conventional motor truck and which au with a _pair of arms `I0 which are pivoted at one end, as Will hereinafter appear, and which carry at their free ends _a scoop II. Each arm is pro vided with a bracket rest or skid `I2 and the >scoop tion when ,the truck moves in one direction and which ,automatically `dumps the shoveied mate rial into the truck body .when the truck moves . A further object is the .provision ci a power shovel for conventional motor trucks which may be demountably connected to the drive wheels of .said trucks and which may function „in con nection therewith without interfering with .the normal .operation of the truck itself and with 20 provided with. - » Referring now to Figs. 1 to 5, inclusive, the device herein described and _claimed is provided tomatically enters into operative shoveling posi such dumping mechanism as said truck may be ` use in connection with the latch shown in simi , inthe opposite direction. ` Fig. 7 is aside view of la locking mechanism `for combination with ,a conventional motor truck and which may be `powered by the same engine which drives the truck. 2 3 of another embodiment ofthe pivot and ratchet is provided with `conribination skids and diggers I3. At its pivoted end, each arm I0 is aiiiXed, as by welding, to >a pair of 4plates I4 which are provided with open `slots carrying a semi-cylin drical `plate I_E, said `plate comprising half of the bearing by which said arm ~is pivotally mounted, as will hereinafter appear. Plate I5 may be af fixed to .the arm proper, as by welding, or in any . other conventional manner. Still another `object of the invention is the Semi-cylindrical member |56 carried by latch `I‘I provision of a powershovel of the :character de which is pivoted at I8 to said plates I4, com 25 scribed which may Íbe utilized .in ,combination prises the second half of said bearing by which with any kind of vehicle having a pair of `drive said arm is pivotally mounted. It will b_e seen Wheels and a body into >whíchto >dump the .shov that when the latch member I‘I is lpivotally raised, eled material. a path of entry is provided through .the slots A still further object is the ‘.provisionof a power 30 of plates I4 to half bearing I5. When .the latch shovel ofthe character described which may be I'I is lowered, the path `of entry is shut oiî and used in combination with a .pair of drive shafts half bearing I6 meets and cooperates with half or `in combination `.with a singleelongated drive shaft which is affixed .to a horizontally recipro cating mechanism of any desirable type and con struction, said device being operable in connec tion with a dump truck, ,a railroad freight car, a conveyor belt, or in connection with any anal ogous device or apparatus. yThese and other objects areattained by mech anism illustrated in the accompanying drawings in which Fig. 1 is ya perspective view of the device shown in .mounting position with respect to a conven tional dump truck, said device being shown in dotted lines mounted on said truck in two dif ferent positions with respect thereto; Fig. ‘2 i-s a face `View of the pivot and ‘ratchet construction of ‘said device; ‘ bearing I5 to provide `the necessary `bearing by means of whichsaid arm I0 pivots. ,A V-shaped ? guide or ñnder I9 affixed to plates »I4 straddles said latch member. Also pivoted to plates I4 at 20 is a pawl 2l. Said pawl is shaped substantially llike an F; the top cross piece thereof comprising .the‘paiwl _mem ber proper `and the longitudinal member ,22 there of comprising part of the releasing mechanism hereinafter described. The lower and shorter cross piece 23 of said pawl is bent over‘at _its free end into the path of movement >of latchmember I'I whensaid latch member is raised. The ob ject- of this construction ris to Íprovide `an auto matic ratchet `releasing mechanism which oper ates when the Alatch is opened. The `relative po sitions of the latch ¿member I1 and Athe cross Fig. 3 is a section on the line 3_3 of Fig. 2; 50 member 23 `being as described, >when 1the latch member is raised and brought over toward the Fig. ‘l` is a plan elevational view of the mecha rear it engages said cross member and causes .the nism shown in Figs. 2 and 3; Fig. v5 is a sectional view ofthe scoop `of said . pawl <to ` disengage .the ‘_ ratchet wheel `hereinafter described. Spring 2.4,afñxed at one Ven_d to plates device; Fig. -6 isa >sectional»viewsimilar to that of Fig. 55 I4 and _at the other end to the longitudinal mem 2,407,930 3 ber 22 of said pawl, serves to urge the pawl into engagement with said ratchetwheel. Af‘uxed by means of stud bolts 2s to hub mem bers 3U of conventional truck wheels 3l of dump' ing truck 32 are hub extensions or -stud shafts 33 carrying self-oiling sleeves or bushings 23. Ro tatably mounted on each said stud shaft is a drum 34 which is provided with external ratchet teeth 35 and internal gear teeth 3b. Splined to the stud shaft within said drum is a gear wheel 3l. Gear To reverse the operation, the catch lever 53 is pivoted on pivot 54 and pin 52 is thereby released. It will be seen in Fig. 1 that the handle end 53a of said catch member extends to the cab 32a of the dumping truck thereby enabling the driver thereof to» manipulate the catch member from the cab'. The truck is now moved in the opposite direction, namely toward the rear. TheY force exerted by gravity upon arms lo and scoop Il now tends to bring said arms and said scoop `’down toward the grorund. The ratchet mecha Wheel 3'1 meshesv »with an idler gear wheel or pin- ' ion 38 within said drum and idler 38, in turn, meshes with a second idler 39, also within said " nism above described controls the speed of this' descent, that is, the speed of the descent will be governed by the speed at which the truck is drum and idler 39, in its turn, engages the inter nal gear teeth 36 of said drum. A centrally aper caused to move toward the rear. When the de tured circular plate 4l afûxed by means of screws 43 to the open side of drum 34 encloses the gear. wheel and pinions above mentioned. In consequence of such construction, when wheelseSl of vthe dumping truck are caused to ro 20 tate," stud shafts 33' will be caused to rotate inte grally with them and so will gear wheels 3l'. By reason of the gear train which connects said gear wheels 3l with the internal gear teeth _36 of the drums34, the drums are caused to `rotate but at a 25 much slower rate of speed. ' ' v It will be seen thatY the bearing comprising semi-cylindrical «bearings l‘5'and I6 is adapted to vice reaches vthe position shown by the solid lines in Fig. 1, further movement of the truck toward the rear will have no effect upon the position of said device relative to the truck. In this fashion, it is pushed into a pile of sand or gravel or any other material sought toi-be ‘removed A‘by means of the truck. When a suii‘icient amount `of this material is scooped up, the truckis stopped and it is now made to move forward again. rThis has the ei'lect, as has already been indicated, of caus ing the arms l0 to pivot upwardly on Vthe stud shafts and hence the scoop l l to move' upwardly in an arcuate line of movement untila position such as the position indicated by the dotted lines 5B is'attained. At this point, the force of gravity ride on sleeve 28 immediately adjacent drum 34. A‘cap 42 aiìxed to the free end of the stud shaft by means of a stud bolt 43 prevents axial dis placement of the bearing and hence of the arm to exerted upon the scooped upvmaterial causes it - to fall into the body of the truck; `the momentum of the scooped up material, controlled by the for ward speed of the truck, carries said material toa which itis amxed with respect to the stud shaft. f-In Fig. 1 the device is shown in mounting po sition with respect to the stud shafts 33, guides or finders I9 resting upon the stud shaft sleeves 28. point more or. less forward of vthe arms. These operations are continued in the mannerindicated When the latch members I7 are raised, an open until the work is' done. Whenit' is time to drive the truck away, the arms and scoop are brought path- parallel with ‘and adjacent to said guide members AI9 vis opened, leading to the slots in up, into the position indicated by the dotted lines plates I4 and to the semi-cylindrical or half 40 E5. As hasalready been mentioned, lever catch bearing members l5. 4'I‘he truck may be backed 53 engages and holds said arms in said position up, thereby causing the device and more partic while, at the same time, stud posts 49 disengage ularly the guard members I9 vthereof Vto ride up the pawls from the ratchet wheels. The truck on said- stud shaft sleeves until contact is made may now be operated in the usual manner with between said'sleeves and the'half bearings i5, or 45 out any interference on the part of the scoop the/device itself may be pushed up upon said stud device herein described. shaft sleeves by hand. YIn either case, when the stud shaft sleeves and the half bearings l5 are properly positioned with respect to each other, the latches l'! are returned to their normal posi tion of rest, thereby bringing half bearings I5 abrupt, yet cushioned stop, thereby throwing the portion >22 of the pawl members‘are engaged by stud posts 49 nxed in each side o-f the truck body and the pawls are thereby caused to ldisengage the ratchet teeth 35 against the tension exerted upon> saidpawl _by spring 24. ASimultaneously therewith, a pin 52 on one of said arms lilis en» lgaged by a catch member 53 pivotedto Aone side of the truck'body by means of pivot pin 54.'v A . . . . 50 tween thetruck body and the drive wheels may into contact with said sleeves. WhenV the device is thus properly positioned on the stud shafts as Yhereinabove described, pawls 2l engage the` ratchet teeth 35 of drums 34 55 ' in response to the tension exerted upon them Aby springs 24. rThe device is now ready tobe used. It will be seen that when the truck is caused to move forward, arms ÍIEI will be caused to pivot upwardly on said stud shafts until they reach the position indicated by dotted lines 5i] in Fig. 1. 60 At this point, a bumper 5I on each side of the truck body engages said arms to bring them to an scooped up'material, so to speak, into the truck body at a point substantiallyY forward of the arms. At the same time and pointythe longitudinal . ' Bearing in mind that frequently the/truck in question may be required to Atraverse uneven roads or ground and that relative movementbe 65 thereby be eiîected, the following features .are incorporated into the mechanism: a tension spring 55 afûxed at its upper end -to a bracket 56 mounted on the truck -body and at its lower end to the handle end of the catch member53,I tends to urge said catch member into uninterrupted engagement with stud pin 52 irrespective -ofthe - relative position of` the truck body with respect to the truck wheels. To `insureisuch uninter- ’ rupted engagement, a further precautionlis taken. A sliding bolt member 51 slidably affixed to the catch end of catch member 53 by means of brack- , ets 58 locks said catch member into positive en gagement with said pin 52. A pin 5S on bolt 51 engaged by springmembers 59a'on brackets 58 Y positions said bolt in'locking'or unlocking posi~ tion. This locking mechanism is showne'very clearly in Fig. 8. It has its counterpart in Fig. ‘7. rIfhere >a locking mechanism 10 constructed in the same manner and of the same parts as thelock ing mechanism above described, isw‘aiîixed to the latch members I1. It will be seen that when the bolts of said locking- members 10 are placed in locking` position withrespect to guides orñnders l5, they engage said Aguides and thereby eñîehctive aromas@ 15 ly prevent upward `or opening movement of- the response to the attraction oli gravity when the drive wheels rotate in the opposite> direction, latch further rotation of the4 drive wheels in the latter members. - i - i - Y -In Fig. `E», a` slightly modified embodiment of the «invention _is shown. In this embodiment, a ratchet wheel ïëiî is splined to the stud shait or hub extension iii-l. This ratchet wheel is en gaged by the pawl above described in the manner above described. In all other respects this em bodiment is similar to the embodiment shown‘in Figs. l to 5, inclusive. - » The invention herein described and claimed is considered to be a basic invention and many modifications may be incorporated therein with out departing from the basic principles thereof. direction causing no vertical chang'e‘in the vground position of the scoop. ' ' 2. The combination with `a vehicle having a body and a pair of drive wheels, of a pair of hub >extensions on said drive wheels, :a pair of ratchet wheels ñxedly mounted on said hub extensions, a pair of lifting-arms pivotally mount ed at one end on said hub extensions, a scoop mounted at the opposite end of said arms and a pair of pawls mounted on said arms adjacent said pivoted end and engaging said ratchet wheels whereby the arms are caused to pivot upwardly For example, although the device has been de raising the scoop in an arcuate line of move scribed above in connection with a motor truck ment from a ground position to a position above having a rear wheel drive, it is clear that the the vehicle body when the drive wheels rotate device may be attached to any other kind of in one direction, and the arms are permitted vehicle having a pair of drive wheels and a body to pivot downwardly and the scoop- to return to into which to dump the material sought to be 20 the ground position along said arcuate line of removed. It is immaterial whether these drive movement in response to the attraction of grav wheels are rear wheels or front wheels or wheels ity when the drive wheels rotate in the opposite intermediate the front and rear. It is clear too, direction, further rotation of the drive wheels in that the device may be made to operate at the the latter direction causing no vertical change 25 front of the vehicle instead of at the rear. In in the ground position of the scoop. such case, the scoop operation would take place 3. The combination with a vehicle having a when the vehicle moves in a forward direction body and a pair of drive wheels, of a pair of and the lifting operation when it moves toward hub extensions on said drive wheels, a pair of the rear. As has already been indicated, the ratchet wheels rotatably mounted on said hub mechanism herein described may be adapted to extensions, a pair of speed reducing gear trains a pair of drive shafts or to a single elongated connecting said hub extensions to said ratchet drive shaft mounted on a horizontally recip wheels, a pair of lifting arms pivotally mounted rocating mechanism. The dumping body need at one end on said hub extensions, a scoop mount not be attached directly or indirectly to the drive ed at the opposite end of said arms and a pair shafts but may instead be a wholly separate 35 of pawls mounted on said arms adjacent said and independent unit mounted, for example, on pivoted end and engaging said ratchet wheels a conveyor belt or on railroad car trucks. The whereby the arms are caused to- pivot upwardly arms li! are shown to be tubular members. Obvi raising the scoop in an arcuate line of movement ously, this need not necessarily be the case. from a ground position to a'position above the 40 I-shaped members or members of other suitable vehicle body when the drive wheels rotate in shape would certainly suilice. Under certain cir one direction, and the arms are permitted to cumstances, a single arm instead of the two pivot downwardly and the scoop to return to the arms herein described, would be sufficient. A ground position along said arcuate line of move skilled mechanic presented with a specific prob ment in response to the attraction of gravity lem could readily determine whether tofuse one when the drive wheels rotate in the oppositeA arm or two arms or, for that matter, a greater direction, further rotation of the drive wheels in number than two arms. Other kinds of ratchet the latter direction causing no vertical change mechanisms, latch members, catch members and in the ground. position of the scoop. release mechanisms may be used without depart 4. The combination with a vehicle having a 50 ing from the basic principles of the invention as body and a pair of drive wheels, of a pair of hub described and claimed. Aside from ratchet mech extensions on said drive wheels, a pair of gear anisms other types of mechanism may be used wheels ñxedly mounted on said hub extensions, to effect upward movement of the arms l0. a pair of drums having external ratchet teeth Thus, for example, one way friction grabbers and internal gear teeth rotatably mounted on similar in construction to the brake band and said hub extensions, a pair of speed reducing gear drum constructions of older automobiles may be trains connecting said gear wheels to said drum used in place of the ratchet mechanisms here gear teeth, a pair of lifting arms pivotally mount-V inabove described. ed at one end on said hub extensions, a scoop I claim: l. The combination with a vehicle having a body and a pair of drive wheels, of a pair of mounted at the opposite end of said. arms and a pair of pawls mounted on said arms adjacent ratchet wheels connected to said drive wheels coaxially therewith, a pair of lifting arms piv ótally mounted at one end coaxially with said drive and ratchet wheels, a scoop mounted at the opposite end of said arms and a pair of pawls mounted on said arms adjacent said pivoted end and engaging said ratchet wheels whereby the arms are caused to pivot upwardly raising the said pivoted end and engaging said ratchet wheels whereby the arms are` caused to pivot upwardly raising the scoop in an arcuate line of movement in response to the attraction of gravity when the drive wheels rotate in the opposite direction. 5. The combination with a vehicle having a body and a pair of drive wheels, of a pair of ratchet wheels connected to said drive wheels coaxially therewith, a pair of lifting arms piv 70 scoop in an arcuate line of movement from a otally mounted at one end coaxially with said ground position to a position above the vehicle drive and ratchet wheels, a scoop mounted at the body when the drive wheels rotate in one direc opposite end of said arms and a pair of pawls tion, and the arms are permitted to pivot down mounted on said arms adjacent said pivoted end wardly and the scoop to return to the ground and engaging said ratchet wheels whereby the position along said arcuate line of movement in 75 2,407,930 arms are caused to pivot upwardly raising the scoopk in an arcuate line of movement from a ground position to a position above the vehicle 8 which engage said pawlsrwhen the lifting _arms pivot upwardly to a predeterminedy position,> caus- ' ing said pawls to pivot out of engagement with body when the drive Wheels rotate in one direc tion, and the arms are permitted to pivot down 5 said ratchet` Wheels, a catch andlocking mecha nism which engages and holds said lifting arms wardly and the scoop to return to the ground when said predetermined position is Yreached, position along said arcuate line of movement in and a latch and locking mechanism which latches response to the attraction of gravity when the and locks said arms in said pivotally mounted drive wheels rotate in the opposite direction, a position. pair of release mechanismsV on said vehicle body 10 ALBERT A. LA POINTE.