US1166035A - Dumping-bucket and hoisting mechanism therefor. - Google Patents

Description

F. E. 'ARNDT.

DUMPING BUCKET AND HOISTING MECHANISM THEREFOR.

APPLICATION FILED APR. 8, 1914.

1,166,035. Patnted Dec.28,19'15.

COLUMBIA PLANOmiAPH co. WASHINGTON, D, c

'Galion, in the county rnrnwr option.

FRANKLIN E. ARNDT, OF GALION, OHIO, ASSIGNO'R TO THE GALION IRON WORKS AND MANUFACTURING COMPANY, GI YGALION, OHIO.

DUMPING-BUCKET AND HOISTING MECHANISM THEREFOR.

Specification of Letters Patent.

PatentedDec. 28, 1915.

Application filed April 8, 1914. -Seria11 To. 830,470.

To aZlw/wm it may concern Be it known that I, FRANKLIN E. ARNDT, citizen of the United States, residing at of Crawford and State of Ohio, have invented certain new and useful Improvements in Dumping-Buckets and Hoisting Mechanism Therefor, of which the following is a specification.

My invention relates to lifting and unloading mechanisms, and particularly to that type of apparatus wherein automatic dumping buckets are used.

A special object of the invention is to improve the construction of the carrier and the dropping mechanism therefor.

My invention is illustrated in the accompanying drawings wherein,

Figure 1 is a longitudinal vertical section of a portion of the track bottom and the carrier thereon; Fig. 2 is a plan view of the block engaging jaws.

The I-beam 18 constitutes a track upon which is mounted the shiftable carriage 21 illustrated in detail in Fig. 1. This carriage is adapted to roll upon the flanges of the I-beam 18 and carries a pulley 22 over which passes a cable 23. One end of this cable is attached to the carriage 21 in any suitable manner, as by the eye 24, and the other end of the cable, after passing over the pulley 22, extends longitudinally beneath the I- beam 18 and passes around a sheave 25, then passes over suitable guide pulleys to a winding drum of any ordinary form driven in a manner obvious to those skilled in the art. The cable 23, between the pulley 22 and the point of attachment 24 passes through a block 31 from which a bucket is swingingly supported.

The carrier 21 is formed of oppositely disposed plates 48 which embrace the lower flanges of the I-bean1 18, and mounted in ears on these plates are the rollers 49 which ride upon the said flanges. The plates 48 are connected by an integral transversely extending web 50 forming the floor of the carrier, this web being formed with a central opening 51 having'downwardly and flange projecting from the lower edge of the wall 52 opposed to the cars 54. Mounted upon the bottom web 50 of the carrier are the gage blocks or jaws 55. There are two of these blocks opposed to each other and formed at their inner edges with mating recesses 56. Each block is formed at its forward end with the projection 57 which engages in a pivoted clip 58 and is held therein by means of a cotter pin 59. The free ends of the blocks 55 have the upwardly projecting lugs 60 and the blocks are drawn toward each other by means of a coiled spring 61. It will be obvious now that the blocks 55 may be spread apart from each other so as to increase the diameter of the opening 56 and that the spring 61 will tend to draw the blocks together.

The forward end of the web 50 forming the bottom of the carrier has an upwardly projecting shoulder 62 which at its upper end is extended forward and downward to form an inclined guiding face 63. Mounted upon the I-beam 18 is a carrier latch 64 which is pivotally supported at 65 in brackets extending downward from the bot tom of the I-beam. The forward end of the latch 64 is extended outward and upward as at 66 so as to form a stop engageable with the bottom of the I-beam and the rear end of the latch is formed with a clownwardly extending shoulder 67 adapted to engage over the shoulder 62 when the can rier is in the position shown in Fig. 1. It will be observed also that this locking pawl or latch 64 is extended beyond the shoulder 67 and is formed with a relatively wide lower face 68 disposed immediately above the opening 56 in the locking blocks. See dotted lines in Fig. 1.

The block 31 through which the cable 23 passes, as shown, comprises oppositely disposed plates within which the pulley or sheave 69 is mounted, the casting forming the block being provided at its lower end with the eye 70 and at its upper end with the upwardly extendin shank 71 formed with the enlarged head T2, this head being substantially conical in form, and the greatest diameter of the head being greater than the opening 56. lVhen the cable 23 is drawn taut, this head 72 will be forced upward against the side Walls of the recess 56 and will force the jaws 55 apart against the tension of the spring 61 so that the head will contact with the locking pawl or latch 64 to force it upward, causing the shoulder 67 to release the shoulder 62 on the carrier and permitting movement of the carrier. Upon the return of the carrier to the position shown by Fig. 1 the extremity of the looking pawl or catch 6st will engage between the lugs 60 and will act tospread the blocks to release the cable block 31.

The carrier is normally urged to a posi tion upon the projecting extremity of the I-beam 18 by means of a counter-weight. This counter-weightis mounted upon a cable 73 which is attached to one of the webs 53 and passes over a convenient guide pulley to support the counter-weight. The action of this counter-weight is to return the carriage to the position shown in Fig. 1 after the bucket has been discharged.

The operation of my invention is as follows: When the bucket has been raised to such height that the head 72 is forced through the opening 56 this head will unlatch the catch 6i, thus releasing the carrier 21 and the continued pull upon the cable 23 will cause the carrier to travel laterally upon the track 18 until the bottom of the bucket is released when the weight of its contents will cause the opening of this bottom and the contents will be discharged. When the winding drum is released and allowed to run free, the counter-weight will cause the carrier and bucket to return upon the track. WVhen the carrier has returned nearly toits normal position the extremity of the locking pawl will engage the lugs and act to spread the jaws or blocks 55. This action will release the block 31 and the weight of the bucket will cause the bucket to drop, whereupon the operation may be repeated.

It will be noted that the mechanism used by me is very simple and positive in its action. It does not readily get out of order.

It has been found thoroughly effective in .practice and it does not require a large num floor oi the carrier and extending across the opening therein and provided with an upstanding lug at its free end, means at the free ends of the jaws for holding them nor mally closed, a load-sustaining block adapted to pass through the opening in the floor of the carrier to engage said jaws and be thereby locked to the carrier, and a latch pivotally hung on the track and having one arm normally holding the carrier against movement and extending over the jaws to enter between the upstanding lugs thereon and thereby release said jaws from the block. 7

2. The combination of a track, a carrier mounted to travel thereon, a pair of clips pivotally mounted in the carrier, opposed jaws each having one end fitted in one of said clips, a spring disposed between and acting on the opposite free ends of the jaws to hold the same together, a load sustaining block adapted to engage said jaws and be thereby locked to the carrier, and means for separating the jaws to release said block.

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

FRANKLIN E. ARNDT. [L. s.]

Witnesses:

WV. J. GEEK,

GARDA HOLMES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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