US1448537A - Mechanical shovel - Google Patents

Description

Mar. '13, 1923. S. HOAR.

MEQIHANlCAL lSHOVELl @n o o o a o N IO o o o a l. w w o a w c o .m o @N c a e e W el`l o e b2@ ww s w W r H..,. a, hh F I m, bm.. .9 o\ E Mar. 13, 1923. 1,448,537.

S. HOAR.

MECHANICAL SHOVEL.

HLED SEPT. 15, 1920.

Patented Mar. i3, i923.

f 13a; TATS SAMUEL HOAR, OF VIRGINIA., MINNESOTA.

MECHANICAL srrovnr.. v f

Application filed September 15, 1920. Serial No. 410,416.

To all whom t may concern.'

Be it known that I, SAMUEL Horan, a citizen of the United States, residing at Virginia, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Mechanical Shovels, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to mechanical shovels and the embodiment here illustrated and described is especially designedfor tunneling purposes where room for operating the device maybe considerably restricted l5 such as experienced in coal, iron or lother mines andeforwwhich purpose my present invention is particularly designed. e

It is evident thatthis or a slightly modified form may 'be used with equally good results where open shoveling is required and such machines employed. y

The principal object of the invention is to provide amore practical mechanical shovel than heretofore known and one requiring as little space as Apossible in lwhich to operate. e w

Another object of the invention is to provide a combination dipperfstick which results in novel flexibility of the dipper.

Still other objects and advantages of the novel combination of parts will appear in the further description of the invention.

In the accompanying drawings forming part of this application and inwhich like reference characters represent like parts:

Figure 1 is a side elevation partly in section of .one embodiment of my invention;

Fig. 2 is a rear elevation, partly in section, ofvFig. l;

Fig. 3 is a top plany view, partly broken away, of the shovel with the dipper in the position illustrated in Fig. 4; and

Figure' 4 is a side elevation, partly in section, of the shovel with the dipper in position for discharging its load into a tram car. l

1 represents a car mounted upon four wheels 2 2 and 3 3. the latteror rear wheels being considerably largerkin diameter than the .former for the upurpose of producing aforwardr downward inclination to the body of the jcair, the particular object of which will appear later.

A turntable having cooperative interlock-A ing parts 4 and 5 is mounted upon the car body and supports the adjustable superstructure, the 'floor of which is illustrated at G. rlhis superstructure may be of any vdesired form of fabrication to provide the necessary strong support for the operating parts lof the machine.y l,

have shown the upright ends of the superstructure as being composed of angle bars 7 7 at the rear end and 8 8 at the forward end, upon the upper extremities 'of 65 which is supported the inclined shovel carriage track and which comprises two spaced channel bars 9 9 facing inwardly towards each other kand which are rigidly fixed in the upper ends of the angles.

Intermediate of the channels 9 9 and reciprocally carried therein is the shovel carriage l0, it being provided with preferably three pairs of rollers or wheels ll which travel within the channels 9 9 as clearly shown in Figure 2 of the drawings,said wheels or rollers ll being the full depth of the channels to prevent undesirable vertical movement of the carriage.

The carriage l0 is of fabricatedconstruction having the forward end thereof extending above and beyond the foremost pair of rollers 11, and, pivotally mounted in such extension, as at l2, is the auxiliary di pper stick 13. The auxiliary stick 13 extends rearwardly to a distance 'approximately equal to the length of the carriage l0 and is attached to the rear end of said carriage by a suitable line or `chain let, and in the rear'end of the auxiliary dipper stick is mounted a transversely disposed roller l5, which is engaged by the clipper' manipulating line 16 when the dipper is in operation.

On the opposite end of the auxiliary dipper stick l3'is pivotally mounted as at 17 the principal dipper sticklS which latter carries upon its forward end the iixed dipper 19 and is manipulated by the line 16 Vbeingk attached to the opposite end 4as at 20. A single line only is required for operating the dipper as the material engaging yend thereof is at all times `heavier than the handle end and willY naturally go to its work by gravity. However a second line 2l is required for the operation of the carriage l() and which secondlinel is attached at one end tothe kcarriage as at22 and passes to and around a suitable shea've 23 adiacent the rear end of the superstructure of the vehicle and kfrom there to and` around the -driving drum 24;, while the vopposite end leadsforwardly to and aroundthesheave 25'up to wardly upon one portion of the line simultaneously with the slacking off of theother portion and whereby alternate reverse rotation' of the drum 24 willl produce reciproca tion of the carriage. A sheave 28 is inf stalled centrally in the rearjof the"super` structure and over which the dipper manipulating line 16 passes to a suitablewinding drum 29. n

I have shown what are commonly known as Dake air` engines for furnishing power i to the various drums and 'operatingmechanism of the shovel, butit is' evident that their applicationor combinationv with the 'specific structure does not enter into the in` vention as electric or other forms ot motors lmay be employed when desired.

The turntable upon which, the Isuperstruc-v ture is mounted, is, as before stated, 'com posed 'of thev two interlocking ring sections 4 `and 5A which are cooperatively engaged with the base "ring or section 30, which lat-r ter is fixed to the chassis of the vehicle, there being two sets of bars, the rings 4 and 30, and one intermediate of ythe rings 4 and 5, thus providing'a simple durable anti-friction bearing lfor the superstructure. The gear mechanism for operat ing said superstructure is illustrated at 32, 33, 34 and 35, the speciiic arrangement of which does not constitute part of my .present 'n invention.

` shovel. f

The seat lfor the operator is shown at 36 as conveniently located upon the side of the superstructure and each motor is operated in either directio'nby a `single lever as indicated at 37, there being' three ot such motors in the machine, one for rotating the superstructure, one for reciprocating the carriage and one 38 represents a able connection for air hose for supplying power to the motors and I have shown at 39 a convenient form of rail anchor or holding means for the rear end of the shovel dure v ing its operation to prevent liftingefrom the track.

It Willfbe noted that the free end of the v auxiliary dipper stick 13 is lin noy way directly attached to the y, shovel manipulating line 16, vbut simplybears upwardly against the line vwhenthe shovel is in the act of digging, and, when the shovel isdrawn rearwardly,l as shown in dotted lines Figure 1,

in the act of digging, lshould it become ex cessively engaged duringsuch act, a .con-

l. tinued draft upon the line 16 Y Y will tend to force downwardly lthe vtree end of the one intermediate of.

' dipper for manipulating thek suitable air line to asuit- Y 1,448,5ef:l

auxiliary dipper stick and thus cause a litting effect upon the dipper which will tend to free its hold though not prevent its subsequent advancement in working, or, in othervwords, the dipper stick, having two fulcrumed points spaced from each other and one being automatically operated as above described, provides an extremely desirable flexibility of the dipper while at work. 'I

In respect to the inclination ot the car or vehicle 1 upon wheels greater in diameter in the rear than in the forward end there of, it will be noted lthat when the dipper is swung about with its load upon such in clined vehicle it will be simultaneously elevated and turned, thus enabling the dipper to discharge its load inthe highest tramcar possible with the minimum elevation of the dipper, as 'it is'unders'toodl that this shovel is designed particularly for tunnell work where spacev both vertically andA hori- Zontally is extremely limited. l

Having thus described my invention what I rclaim and desire to secure byQLetters Patent,is--V ,4 f

1. In a mechanical shovel, the combination withk aportable inclined turntable, of a superstructure supported upon the turntable, an inclined track upon ythe superstructure, a reciprocable carriage upon the track, an rauxiliary dipper stick pivotally vcarried upon the carriage,ga vdipper stick and dipper carried 'upon the l.auxiliary stick, and'means for simultaneously operating both dipper sticks." l x l.

2;'In a'mechanical shovel, the combinae tion with a vehicle, having a turntablethere upon, .of .ay superstructure supported upon the turntable', an inclined track carried by thesuperstructure, a reciprocal carriage carried by 'the superstructure, an j auxiliary f stick pivotally carriedu'pon the carrlage, a dipper `stick and dipper carried uponv the auxiliary stick, "and a single -line forsimultaneously operating both 'dipper sticks. v s 1 3.1 In a mechanical shovel, the" combination with a vehicle having a turntable there upon, of a superstructure supported' `upon the turntable, a carriage reciprocally'carried in the superstructure, an'auxiliary" dipper stick pivotally carried upon thel carriage, a dipper stick and dipperI carried upon the auxiliary stick, independent means for operating the ycarriage and the superstructure, anda single linefor simultaneously operatboth dippersticks. f l

4'. lIn combination a vehicle, a superstruc `ture upon the vehicle, an', auxiliary-dipper stick pivotally4 carriedby, the superstructure,' a dipper 'stickand dipper pivotally carried by theauxiliary dipper stick, .a single f operating-.linee,attached to Vr*the* combined dipper andstick, and means carried yby the auxiliary stick engaging said line and operating the auxiliary stick for the purpose described.

5. In a mechanical shovel the combination with a portable vehicle, of an auxiliary dipper Stick pivotally carried thereupon,

Said pivotal point being spaced from the lower end of the stick, a combined dipper stick and dipper pivotally carried upon the extreme lower end of the auxiliary dipper stick, a single operating line permanently attached to the clipper carrying stick, and the free end of the auxiliary stick engaging said line for the purpose described.

6. In a mechanical shovel, the combination with a portable vehicle, of an auxiliary dipper stick pivotally and reciprocably carried thereupon, 'said pivotal point being spaced from the lower end of the stick, a combined dipper stick and dipper pivotally carried upon the extreme lower end of the auxiliary dpper Stick, a single. operating line attached to the dipper carrying stick and engaging the free end of the auxiliary stick, means for limiting the upward motion of the upper end of the auxiliary stick, and means on the vehicle for operating the line, substantially as described.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses. SAMUEL HOAR. Witnesses:

D. GREELEY, ESTHER DosEY.

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