US1327324A - Loading and unloading apparatus - Google Patents

Description

A. S. HECKER. LOADING AND uNLoALI'IIIIG APPARATUS.

APPLICATION FILED MAY 2e, 1917. 1,327,324. Patented Janf, 1920.

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lq N N O w v n N. L) o 7 GJ In o m m 'v oo n'ucmoz A. S. HECKER.

LOADING AND UNLOADING APPARATUS.

AP?LlCATION FILED MAY 26, 19H.

1,327,324. Patented Jan.6,1920.

3 SHEETS--SHEET 2.

A. s. HECKER.

LOADING AND UNLOADING APPARATUS.

APPLICATION FILED MAY 26. 19H.

Patented Jan. 6, `1920.

3 SHEETS-SHEET 3.

ARTHUR S. HECKER, OF CLEVELAND, OHIO.`

LOADING AND4 UNLOADING APPARATUS. I

Speciication of Letters Patent.

p Patented J an. 6, 1920.

Application filed May 26, 1917. Serial No. 171,106.

To all whom it may concern:

B e it known that I, ARTHUR S. HECKER, a citizen of the United States, residing at Cleveland. in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in. Loading andUnloading Apparatus, of which the following is a full, clear, andQeXact description, reference being had to the accompanying drawings.

This invention relates to apparatus for loading and unloading, and has for its general object to provide an apparatus of this character having a wide range of operation and one which will render more positive and direct the control of the load carrying device, both in its load-receiving and in its dif.- charging position. A further and more limited object of the invention is to secure the foregoing objects in connection with a load-carrying.device of the clam-shell bucket type and to enable the said device to take its charge or load manner. Further and more limited objects of the'invention will appear hereinafter and will be realized in and through the combinations of elements embodied in the claims hereto annexed.

In the drawings forming part hereof, Figure 1 represents a side elevation of my apparatus; Fig. 2 a sectional detail through the head by which the bucket is rotatably supported; Fig. 3 a sectional View corresponding substantially to the line 3 3 of Fig. 2; Fig. 4 a detail in elevation of the end of the rigid member or dipper-stick; Fig. 5 adetail in plan of the said member and'parts of thek means for rotating the bucket; Fig. 6 a side elevation, with certain parts shown in section, of the means for maintaining a pivotal connection between the rigid member and `the boom while maintaining a driving connection between'the said member and. the means for moving the same in the direction of its length; and Fig. 7 a sectional detail corresponding substantially vto the line 7-'-7 of Fig. '6.

Describing .by reference characters l the various parts illustrated herein, 1 denotes the deck or platform of a carriage of the steam-shovel type. This carriage is shown as provided with wheels 2 and a platformV 3 mounted on a truck 4. carried by the deck or'platform 1, the deck or platform being rotatably mounted on the other drums mounted on said platform.

`means of a guy 18.

in a particularly eiicientV 5 denotesa boom F platform 3 by means r-of. the wheels 6, in Athe. usual manner. 7 denotes an ,engine which, through suitable standard connections (not illustrated). is adapted to rotate the pinion 8 meshing with the gear 9 on the platform 3, thereby to rotate the deck oi"platfoim 1.

10 denotes a drum on the platform 1 driven by the engine 7 in any suitable manner, and 11 and 12 denote' the geared heads of two 13 denotes a lifting line for the boom 5, said line being wound upon the drum' 10 andv eX- tending thence around a slieave 14 on a strut 15, thencefaround a sheave 16 on said boom, v

the end of the line being connected by a bail 17 to the upper end of said strut and the strut, being supported from thecarriage by 19 denotes a crowding engine onv the boom 5, said engine being adapted, by suitable standard driving connections (not illustrated) tov operate pinions 20. The boom l5 is preferably of forked construction and is adapted to receive between the side mem. bers thereof a longitudinally adjustable rigid member 21, said member being constructed in substantiallyl the same manner as. the ordinary dipper stick of a steamshovel, but beingconsiderably longer than the ordinary dipper stick, forreasons to be explained hereinafter. Themember'21 is provided with racks 22 adapted to mesh with the pinions 20. The outer end of the i member 21 is provided with a bail 23 to which there is connected the lifting line 21, said line extending over a sheave 25 on the outer end of the boom 5 and thence to a drum on the platform, the line being shown as extending to the drum having the geared head 12. Secured to opposite sides of the member 21 are the straps 26, said strapsforming a forked support for the bucket as Well as for some of the operating parts therefor. l27 denotes a pin which extends through the ends of the straps 26 and through thev sides of a metal frame 28 by which the bucket is rotatably supported. Mounted on the pin 27 is the sheave 29V for the loading or bucket-closing u line. The frame 28 is provided on each side thereof with a rearward extension carrying a sheave 30. The bottom of the frame 28 is provided with an aperture through which there eX- tends a double-headed bolt, the body of the bolt being indicated at 31 and the upper head sheave 35, preferably may be automatically 32 resting upon the bottom of the frame 28. The lower head 33 of said bolt forms a rotatable support for the bucket-head frame 34. This head is provided with a horizontal made in' two sections connected by means of lugs 36 and bolts 37 and applied to a rectangular neck 31a on the frame 3l. The sheave, 35 is located immediately beneath and forward of the sheaves 30. If desirable or necessary, balls or other antifriction devices 33amaybe interposed between the bolt head 33 and the adjacent surface of the bucket-head frame.

Pivoted to opposite sides of the head frame 31 are the links 3S which are connected to the opposite members 39 of a clam shell bucket, said members being pivote'd in the usual manner to the support l0. l1 denotes the closing line, which may be secured at one end to the head frame 3l in any convenient manner. as by means of a hook l2 (see F ig. 2), said line extending around a sheave l2 connected to the. supporting frame l0 and thencel over the sheave 2.. over a sheave 43, carried by a bracket 1lb above the space between the side membeis of the boom 5 adjacent to the pivot for the member :21 and thence to a winding drum on the deck ory platform 1, the drum shown beingv that. provided with the geared head 11.

In order to maintain the racks 22 in mesh with the pinions 20 and to permit the member 21 to pivot about the shaft of said pinions as an axis in all longitudinal adjustments of the said member, I provide a saddle bloc-k having a. central projection ll extending between the sides of the member 21 and pivoted upon a nin or shaft- 15 which supports the pinions :20. Y

As it is desirable. if not absolutely necessary, to position the opposite .members 39 of the bucket so that. they may operate to the best advantage in taking and discharging a load, I provide means whereby the` bucketrotated through the longitudinal movements of the member 21. locating the means for imparting this rot-ary movement in convenient relation to the operator of the crowding engine. The construction whereby this result is secured comprises the sheaves 30 and 35 and means for rotating the latter sheave and thereby the bucket-head frame 3l. The means shown herein comprises a pair of rods 16 which are slidably mounted upon the side members of the dipper stick :21.being guided thereupon by tubular projections l? and 1S. The tubular projections 18 are preferably formed upon the top of the saddle block 1l which maintains the member 2l in operative 'relation to the pinions 20. Each rod 16 is provided with a head or abutment i9, between which and the projections 1T helical springs 50 are inserted. these springs being normally un'der considerable compression. Each of the to the work,

its load, the member 21 will operate as locking-engagement with its coperating rod 4G. The outer or forward ends of the rods 16 are connected to a line or other suitable pliable connection sheaves 56 on` the member Q1, under the sheaves 30 and aroimd the sheaves 35.

of the handles 54, the corresponding cam may be brought into 55 which extends over lith the parts constructed and arranged I asdescribed, the operation will be as follows :`Ordinarily, there will be no occasion for adjusting the boom 5 in a.I vertical plane aft-er the initial adjustment, as the wide range of operation secured through the use of the long member 21 will ordinarily be suiiicient to enable. .the latterrto take its load either at a point considerably removed from the platform l or in immediate proximity thereto. Should occasion require the vertical adjustment. of the boom 5, this adjustment may be obtained in the usual manner. The crowding engine oprator is enabled, by the rigid member 21. to quickly and conve-niently place the bucket in operative relation the positioning of the bucket without swinging or oscillation thereof being secured by reason of its close connection with" the end of said rigid member. This adaptability is advantageous when the bucket is in both its load-taking and its load-discharging positions. F urthermore. when a bucket is arigid strut, thereby holding the bucket down during the closing movement thereof and resisting and preventing any lifting movemeintof the bucket due to the It will be observed that the bucket-closing line 11 extends substantially parallel to the rigid member 21. Leading the line 41 substantially parallel to the member 2l prevents the said line from forming an angle with said member, whereby there is no tendency to break or buckle the said member. It will be observed that, as the sheave 43 is located near the axis aboutv which themember 2 1 pivots. this parallel relation will be preserved in all operating vpositions of the bucket.

Reference has been madehereinbefore to the desirability of rotating the bucket. By the construction described herein. the crowding engine operator is enabled to impart such rotation to clamping one or the other of the rods 46 as the member 21 yapproaches the end of its stroke (either inward or outward). Assume that the member 21 is being moved outwardly and thatthe proximity to its load-takingl position. If

for quick and positive location taking closiiig action.

the bucket by merely i bucket 1s in close 'eiliciently on the material, the operator .2l is being run meanest itis desirable to impart a rotary movement to the bucket in brder to enable it to operate clamps one or the other of the rods 46 by throwing down the handle 54 o the cam thereabove. Further outward movement of the member 21 pulls the other rod .outwardly through its guide proj ections47 and i8, compressing the spring 50 and rotating the bucket through the sheave 35. When the bucket Vhas taken its load and the member inwardly, the operator can then release the cam grip, and the springs will cause the rods to assume `the positions shown in the drawings. As the bucket reaches its discharging position, if desirable to impart rotation thereto, one. of the rods 46 may be clamped, ln case the further movement of the member 2l is an outward movement, the bucket will be rotated in the mannerdescribed before ln the event that the member 21 is movedA inwardly, theY v spring on the rod which is1 clamped will be` compressed betweenthe head 49 and the tubular guide 47 while the spring on the opposite rod will' expand, thereby taking up the pliable connection 55 and rotating the sheave 35 and the bucket. f

Having thus described my invention, what l claim is:

ylfln an apparatus of the character described, the combination, with a swinging boom, of a rigid member pivotally supportedp means for moving said member in the direction of its length, a,l loadby said boom,

carrying device carried by said) member,

j loading means for said device, means for moving said member about itspivotal support, lmeans for operating said loading means, and means operable by the adjustment of said member for imparting a; rotary I movement to said device.

2'. ln'an appa-ratusof the character ldescribed, the combination, with ra swinging boom, of a rigid member pivotally supported by said boom, means for moving said member 1n the directlon of its length, a clamshell bucket carried by said member, a clos;

ingr line for said bucket extending substan-l tially parallel with said member and guided by said boom, a lifting line for said member also guided by said, boom, means for operating said lines, and means operable by the movement of said member in the direction of its length tor imparting a Arotary movement to said bucket. c

3. ln an apparatus of the character described, Vthe combination, with a swinging boom,J of a` rigid member pivotal'ly sup'-4 portedby said boom, means `or moving said member in the direction of its length, a loadcarrying device carried by said member, a loading line for said device extending substantially parallel with said member and guided by said boom, member about its piv operating said line,

tion of its length for imparting a rotary movement to sai device: .y 4. rlhe combination wlth a rigid supportmeans for moving said, tal support, means for p and means operable by' v the movement' of said member inthe direcing arm, of'a bucket provided with a head frame, a vertical pivotbolt supporting and directly connecting said head frame to the arm, (and means to rotate the had frame and bucket on said pivot. v

ln testimony whereof, l hereunto aix my signature., v

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