US1356985A - Loading-machine - Google Patents

Description

J. H; HUHN.

LOADING MACHINE. APPLICATION men mm. 5, m9.v

Patented 0013.26, 1920.

3 SHEETS-SHEET I.

' INVE N 7'01? HTTOR/Vf) J. H. HUHN. LOADING MACHNE. APPLICATION mm mm. 5. I919.

Patented Oct 26,1920.

3 SHEETS-SHEET 2.

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Q 140277701? QfI MV. WM

firm/aver J. H. HUHN.

LOADING MACHINE.

APPLICATION FILED MAR. 5. 1919.

Patented Oct. 26, 1920.

3 SHEETSSHEET 3.

UNITED sTA'r s PATENT OFFICE.

JOHN H. HUHN, OF MORGANTOWN, WEST VIRGINIA.

LOADING-MACHINE.

Application filed March 5, 1919.

To all whom it may comma! Be it known that 1, JOHN H. HUHN, a citizen of the United States of America, and resident of Morgantown, county of Monongalia, and State of Vest Virginia, have invented certain new and useful Improvements in Loading-Machines, of which the following is a specification.

This invention relates broadly to loading apparatus, and more limrticularly to a power;driven machine for loading earth, coal and the like on cars or wagons for transportation. 4

The primary object of the invention is to provide a loading machine embodying a shovel or scoop for picking up a load of material, and a transporting device cooperating with said shovel adapted to receive such material from the shovel and to convey the same to a point remote from the shoveldumping position and to dump the same in cars or the like.

A further object is to provide a mechanical loading apparatus which is transportable from place to place and which may be shifted to operate at any angle with respect to the track or roadway upon which it travels.

Other important objects attained by th invention will in part be apparent and in part specifically pointed out hereinafter, reference being had to to the accompanying drawings, in Which.-

Figure 1 is a side elevation of the invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is a partial longitudinal section;

Fig. 4- is a rear end elevation of the invention;

Fig. 5 is an enlarged front end elevation of the carriage and the support upon which said carriage travels; and

Fig. 6 is an enlarged detail section of the reversing gear.

Referring to said drawings. 1 indicates a large gear which is mounted horizontally beneath the upper part, as the platform 2, of a truck-carried frame, said gear being fixed upon a substantially upright pin or shaft 3 which is suitably journaled for rotation on said frame. Fixed upon the upper end of said shaft 3 is one end of a crankarm 4 which has its opposite end pivotally connected to the rear end of a pitman 5 which has its front end pivotally connected to the lower member 6 of a carriage which- Specification of Letters Patent.

Patented Oct. 26, 1920;

Serial No. 280,756.

is designated generally by the reference letter A. Said member 6 of the carriage is movable longitudinally over parallel gibs 7 mounted upon the forward end of a forwardly projecting table-like extension 8 of said frame or platform. Said gibs have their opposing faces undercut to form guideways 9 in which are received flanges 10 formed on said carriage members 6.

J ournaled in suitable bearings 11 on said carriage 6 is a transverse shaft 12 upon the opposite ends of which are fixed wheels 13 adapted to travel back and forth, with reciprocating movement of the carriage, upon projecting ledge-like trackways formed on or carried by the frame extension or table 8 and located laterally with respect to said gibs T. Said wheels 13 have spurs 14 disposed on the peripheries thereof, which engage with alined seats or holes 15 provided in said trackways, said spurs and holes c0 operating to afford positive traction for said wheels.

,Each of said wheels 13 has extending diametrically across the outer face thereof a fixed cross-head or crank 16 which carries at one end thereof a crank-pin 17 upon which is pivoted the rear end of an arm 18.

The front ends of the opposite arms 18 are pivotally mounted upon trunnions 19 carried by the opposite sides of a shovel or scoop which is generally designated by the reference letter B and which has a bottom 20 and a back 21 disposed approximately at right angles to each other, as shown.

Disposed in meshing relation to the gear 1 is a pinion 22 fixed. upon an upright shaft 23 journaled at its lower end'in suitable bearings carried by the truck-frame and which is rotatably disposed within a part of a transversely disposed bolster 2 1 carried upon the rear end of said frame. Fixed upon the upper end of said shaft 23 is a bevel gear 25 adapted to be operatively engaged by one or the other of two oppositely facing bevel gears 26 and 27, according as it is required to drive said shaft in one direction or the other. Said gears 26 and 27 are fixed upon a shiftable sleeve 28 and are spaced apart such a distance that they cannot simultaneously engage the bevel gear 25. Said sleeve 28 is keyed upon and shiftable along a transverse shaft 29 journaled in suitable bearings provided on upright frame members 30 mounted upon the platform 2 or other suitable part of the truck frame. A spur gear 31 carried by said shaft 29 has disposed in driving relation thereto a pinion 32 carried by the driveshaft of an appropriately located electric motor 33.

The main portion or table 34 of the carriage A has its front end suitably supported .in permanent position over the carriage movement of the latter without hindrance from the shaft 23 which projects through said slot.

Rigidly mounted upon said carriage table 34 rearward of said slot 35 is alongitudinallyextending substantially-horizontal rack-bar 36. Disposed in mesh with the teeth of said rack-bar is a relatively large gear quadrant or wheel 37 which is carried by a transverse shaft 38 j ournaled in suitable portions of the frame 30 at an appropriate distance rearward of the shaft 29, as shown. Said gear wheel 37 has mounted thereon one end of an arm 39 which rigidly carries upon its opposite end a bucket 40. Said bucket is de-. signed to be actuated by rotation of gear wheel 37 to travel back and forth between the full line and dotted line positions of said bucket shown in Fig. 1. While the bucketcarrying arm 39 may be rigidly carried by the gear wheel 37, it is preferably pivotally attached to opposite sides of said wheel adjacent to the periphery of the latter, as at 41. Said arm is extended chordwise across said wheel to lie between the shaft 38 and op ositely disposed projecting supports or stucs 42 provided on opposite sides of said wheel adjacent to the periphery of the latter. Said studs are so located that a limited amount of free movement of the arm 39 is permitted between them and said shaft 38. In the rearmost, or dumping, position of the bucket, said arm 39 rests upon said studs, as shown in full lines in Fig. 1. When said bucket, in moving from said position to its load-receiving position indicated in dotted lines in said figure, has passed slightly over the upright position thereof, it swings forward by gravity and said arm 39 seats upon the shaft whereon it rests during the remainder of the forward movement. In returning to dumping position, the arm 39 of the bucket rests against said shaft until it has passed slightly over the upright position thereof, whereupon it gravitates to the position wherein it rests on said studs. The purpose had in view in providing for a limited amount of free movement of the .bucket-supporting arm, as described, will shaft 29, one or the other of bevel gears 26' and 27 (according to the direction in which it is desired to drive the large gear 1), bevel gear 25, upright shaft 23, pinion 22, large gear 1, upright shaft 3, crank-arm 4, and pitman 5, which latter, as hereinbefore described, is pivotally connected to the lower member 6 of said carriage. lVith the reciprocating movement of the carriage, the gear wheelv 37 is actuated to alternately rotate forward and back through its engagement with the rack-bar 36 carried by said carriage, said gear wheel being so proportioned in size with respect to the distance through which said table reciprocates that the bucket 40 is actuated to travel between the limits indicated in Fig. 1 of the drawings. Also, with the reciprocating movement of said carriage, as aforesaid, the wheels 13 travel back and forth upon the ledge-like trackways carried by the table 8, rotation being rendered positive by interengagement of the spurs 14 of said wheels with the seats or holes 15 provided in said trackways.

Rotation of said wheels 13 in a forward direction actuates the shovel B to advance, and vice versa. Forward rotation of said wheels following that. in which the shovel is initially deposited on the ground close to the front end of the truck results in said shovel being thrust forward for scooping up the material to be loaded. When the shovel has been filled, it is withdrawn, actuated by rearward travel of said carriage, until it reaches its 1n1t1al seating position, where-v upon the under sides of the inclined shovel arms 18 engage laterally projecting fulcrum-pins 43 carried by the ends of the cross-heads or cranks 16 opposite the ends thereof which carry the crank-pins 17. Continued rearward rotation of said wheel 13 results in said arms 18 and the loaded shovel carried by the latter being elevated from said initial shovel-seating position to the substantially upright position shown in dotted lines in Fig. 1. Slightly prior to reaching the last mentioned position, an arm 44 carried by the back 21 of the shovel engages the upper front end of the then seated bucket 40 whereby said shovel is tipped rearward, as shown in said figure, for dump ing its contents into said bucket.

The shovel-dumping position is assumed when the crank-arm 4 and the pitman 5 occupy their rearmost positions with the latter overlying and in parallel alinement with the former. Consequently, continued rotary movement of the last-mentioned parts serves to reverse the direction of movement of the carriage A and the wheels 13 whereby the shovel is returned to its initial seating position and is thence again thrust forward to take up a load. Thus, as is apparent, uninterrupted. operation is permitted without reversal of the mechanism by which reciprocation of the shovel-carrying mechanism is accomplished. \Vhen, in the operation of the shovel, the same may be advantageously advanced into the bank or pile of material to the limit of its forward movement, the reciprocation-producing mechanism may be driven uninterruptedly, or without reversal, it being obvious that, when the shovel has reached the limit of its forward travel, the crankarm a and the pitman 5 occupy positions in extended alined relation, and that continued movement will act to return the shovel in. rearward direction. On the other hand. when it is impracticable to advance the shovel to the limit of possible forward movement, as when the bank or pileof material to be handled lies close to the initial shovel-seating position so that the shovel receives its load with a thrust short of that of which it is capable-that is, with a fractional part of the possible thrust-the sleeve 28 may be shifted on the shaft 29 to effect a reversal of the direction of rotation of said shaft and, consequently, of the mechanism intermediate said shaft and the carriage A, for moving the latter rearward, thus accom plishing retraction-of the shovel.

To prevent rearward tipping or dumping movement of the shovel while it is being retracted to the point where elevation thereof begins, rearwardly extending bracing members, 45, preferably constituting extensions of the shovel sides 45, are provided. On the other hand, to prevent forward tipping of the shovel which would result in discharge of its load during elevation thereof, later ally-extending fulcrum members 46 are suitably located on said members 45* for assuming underlying engagement with the shovel arms 18 at the moment when elevating movement commences.

As is obvious, the shovel B occupies the limit of its rearward movementthat is, occupies its load dumping position-when the carriage has reached the rearward limit of its reciprocation. Further, the bucket 40 reaches its forward limit of movement wherein a rest member a? carried on the under side thereof assumes seated relation to the table 34 of the carriage slightly in advance of the completion of the rearward reciprocating movement of said carriage and remains seated during a short interval of time, which interval is that required by the carriage to complete its saidrearward movement and to return a short distance in its forward reclprocatmg movement, or the length of time required for the gear wheel 37 following the deposit of Said bucket 4.0

on the table A, to rotate forward to the point where the studs 38 engage said arm 39 and to rotate rearward from said point to that wherein said arm resumes seated position on the shaft 38.

During the period or interval in which said bucket remains at rest, as foresaid, the shovel 13 moves into dumping position with respect to said bucket, dumps its load, and moves out of engagement with said bucket.

A car or other receptacle may be located rearward of the truck in position to receive the contents of the bucket 40 when the latter assumes dumping position.

The entire mechanism hereinnbefore described may be superposed upon a turntable truck, as is most clearly shown in Fig. 1, so that it may be shifted to operate at any desired angle to'the trackway 48. Such turn-table truck may be of any appropriate type or construction, that herein shown for illustrative purposes consisting of a. truck frame 49 mounted upon wheels 50 for traveling along said trackway 48, a turn-table 51 mounted to rotate on said frame 49 and carrying thereon track-rails 52. Said trackrails have the wheels 53 of the first hereinmentioned truck mounted thereon and are of a length which permits said truck to be shifted somewhat thereon in a forward or rearward direction.

The shovel :ihd shovel-actuating mechanism herein shown and described forms the subject-matter of Patent 1,293,447 granted to me Feb. 4, 1919;'hence claims directed broadly to said mechanism are not included herein.

What is claimed is 1. A loading machine comprising a horizontally movable member, a rack-bar car ried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm attached to said gear, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket from a substantially horizontal load-receiving position to load-dumping position and back to load-re ceiving position, and a shovel connected to and actuated by said reciprocating means whereby material is elevated and deposited in said bucket.

2. A loading machine comprising a hori-' zontally movable member, a rack-bar carried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm attached to said gear, means for reciprocating said member'whereby rotary motion is imparted to said gear for swinging said bucket from a substantially horizontal-load receiving position to load-dumping position and back to load-receiving position, and a, shovel actuated by reciprocating movement of said member for loading said bucket.

3. A loading machine comprising a horizontally movable member, a rack-bar carried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm attached to said gear, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket from a substantially horizontal load-receiving position to load-dumping position and back to load-receiving position, and a shovel actuated by reciprocation of said member for taking up a load of material and depositing the same in said bucket, said shovel and said bucket having synchronized movements.

4. A loading machine comprising a horizontally movable member, a rack-bar carried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm attached to said gear, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket from a substantially horizontal load-receiving position to load-dumping position and back to load-receiving position, and means actuated by reciprocation of said member for taking up a load and depositing the same in said bucket.

5. A loading machine comprising a horizontally movable member, a rack-bar carried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm attached to said gear, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket from a substantially horizontal load-receiving position to load-dumping position and back to loadreceiving position, and a shovel associated with said movable member and actuated by reciprocation of the latter to take up a load and transfer the same to said bucket. I

6. A loading machine comprising a horizontally movable member, a rack-bar carried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm attached to said gear, means for reciprocating said member where by rotary-motion is imparted to said gear for swinging said bucket from a substantially horizontal load-receiving position to load-dumping position and back to load-receiving position, and a shovel associated with said movable member and actuatedby reciprocation of the latter to advance horizontally to take up a load, to retract, and then to elevate to a dumping position over the load-receiving position of said bucket.

7. A loading machine comprising a horizontally movable member, a rackbar carried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm pivoted eccentrically to said gear and disposed chordwise with respect to the latter, supporting means for said bucketsupporting arm located at opposite sides of the latter and relatively so spaced that a limited movement of said arm on its pivot is permitted, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket back and forth between a load-receiving position and a dumping position. and means for depositing material in said bucket when the latter occupies receiving position.

8. A loading machine comprising a horizontally movable member, a rack-bar carried by said member, a gear rotatably mounted over and having its 3th in mesh with those of said rack-bar, a bucket having a supporting arm pivoted eccentrically to said gear and disposed chordwise with respect to the latter, supporting means for said bucket-supporting arm located at opposite sides of the latter and relatively so spaced that a limited movement of said arm on it pivot is permitted, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket back and forth between a load-receiving position and a dumping position, and means actuated by reciprocation of said member for depositing material in said bucket when the latter occupies receiving position.

9. A loading machine comprising a horizontally movable member, arack-bar carried by said member, a gear rotatably mounted over and having its'teeth in mesh with those of said rack-bar, a bucket having a supporting arm pivoted eccentrically to said gear and disposed chordwise with respect to the latter, supporting means for saidbucket-supporting arm located at opposite sides of the latter and relatively so spaced that a limited movement of said arm on its pivot is permitted, means for reciprocating said member whereby rotary motion is imparted to said gear for swinging said bucket back and forth between a load-receiving position and a dumping position, and means actuated by reciprocation of said member and operating synchronously with said bucket for loading material in the latter at its load-receiving position.

10. A loading machine comprising a horizontally movable member, a rack-bar car ried by said member, a gear rotatably mounted over and having its teeth in mesh with those of said rack-bar, a bucket having a supporting arm pivoted eccentrically to said gear and disposed chordwise with respect to the latter, supporting means for said bucket-supporting arm disposed to carry the latter with rotation of said gear from a position wherein said bucket seats on said movable member in front of said gear to a rearwardly inclined bucket-dumping position, said supporting means being disposed to permit said bucket to remain at rest for a brief interval in its seated position.

11. A loading machine comprising a truck,.a carriage superposed on said truck, means for imparting reciprocating motion to said carriage, a shovel, pivoted supporting arms for said shovel, means intermediate said carriage and said arms whereby reciprocation of the former actuates the latter to advance and retract said shovel and then efi'ects elevation of said arms to substantially upright shovel-dumping position, a bucket mounted over said carriage, and means including a rack-bar actuated by reciprocation of said carriage to swing said buckeet from a position underlying said shovel when the latter is in dumping position to' a rearwardly inclined dumping position and return.

12. A loading machine comprising a truck, a carriage superposed on said truck, means for imparting reciprocating motion to said carriage, a shovel, pivoted supporting arms for said shovel, means intermediate said carriage and said arms whereby reciprocation of the former actuates the lat ter to advance and retract said shovel and then effects elevation of said arms to substantially upright shovel-dumping position, a bucket mounted over said carriage and adapted in one position to receive the con tents of said shovel when the latter is dumped, a gear on which said bucket is supported, a rack-bar operatively engaged with said gear and actuated by reciprocation of said carriage to rotate said gear for swinging said bucket to and from a dumping position located rearward of said carriage, said shovel and said bucket having their movements synchronized so that the former assumes load-dumping position and the latter assumes load-receiving position in approximate simultaneity.

13. A loading machine shovel, continuously operating means for advancing, retracting, raising and lowering said shovel, said means including a horizontally movable member, a bucket disposed to oscillate about a fixed axis, said bucket being adapted to receive the contents of said shovel when the latter assumes its elevated position, a rack-bar carried by said member, and a gear interposed between said bucket and said rack-bar whereby the former is oscillated between its load-receiving position and a rearwardly located position in which the contents of the bucket are dumped therefrom.

In testimony whereof, I affix my signature in presence of two subscribing witnesses.

JOHN H. HUHN. Witnesses:

D. H. Connrrmr, W. H. SOUTH.

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