US813160A - Carrier. - Google Patents

Description

PATENTED FEB. 20, 1906.

D. G. LYMAN.

CARRIER.

APPLICATION FILED 11mm. 1905.

2 SHEETS-SHEET 1.

PATENTED FEB. 20, 1906.

D. G. LYMAN.

CARRIER.

APPLICATION FILED AUG.4, 1905.

2 SHBETS-SHBET 2.

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Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed August 4, 1905. Serial No. 272,694.

T on whom, it may concern.-

Be it known that I, DWIGHT G. LYMAN, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Carriers, of which the following is a specification.

This invention relates to carriers, and particularly to the kind commonly known as elevated or overhead conveyers. Such conveyers usually are supported upon overhead tracks or cables, and this invention refers particularly to a means for stopping the carriage of the carrier at a predetermined point in its movement and for automatically connecting with and disconnecting from said carriage the bucket and its operating devices.

In the accompanying drawings, Figure 1 is a side elevation of a carrier embodying the features of this invention. Fig. 2 is an enlarged view, in side elevation, of the carriage for the carrier, showing the locking and re leasing mechanisms in different positions from those in which said mechanisms are represented in Fig. 1. Fig. 3 is a transverse vertical section through the mechanism illustrated in Fig. 2, Fig. 3 being taken on dotted line 3 3 of Fig. 2. Fig. 4 is a transverse vertical section through the stop and unlocking devices shown in Fig. 1, said figure being taken on dotted line 4 4 of Fig. 1. Fig. 5 is a transverse vertical section through the hoisting-head.

In the embodiment of my invention herein shown and described I have provided a carriage 1, the body portion of which is made up of four plates 2 and 3, separated by spacingblocks 4 at the ends of the plates and held together by bolts passing through suitable openings in said blocks and plates. A shaft 6 passes through suitable openings (not shown) in the plates 2 and 3 and has bearings 7, secured upon the outer sides of the outer plate 2. Sheaves 8 and 9 are loosely mounted upon the shaft 6 between the plates 2 and 3, said sheaves being provided to carry the hoisting-cable 10, one end of which cable is secured to the forward end of the carriage 1 by the hook 11 and the portion of said cable running to the hoisting-drum passing over an idler-sheave 12, mounted at the forward end of said carriage.

In the present instance the carriage 1 is supported upon a cableway comprising two riage 1 and between their upper ends pivotally support the rollers 17, one for each of the cables 13 14. A locking-latch 18 for holding the carriage in its loading position is also pivotally mounted between the rear pair of the arms of the carriage. A bracket 19 is secured to the outer side of each of the plates 2, and near their lower edges said brackets carry pivotally-mounted hooks 20, each of which hooks has an integral upwardly-extending releasingarm 21, the upper ends of said releasing-arms being rigidly connected by a bar 22. The hooks 20 are thus secured together, and to each is rigidlyfixed a weightarm 23, bearing a weight 24. The hooks 20 are adapted to engage studs 25, projecting from the hoisting-head 26, said studs being fixed upon and projecting from brackets 27, fixed to said head 26. The hoisting-head 26, like the carriage 1, comprises four verticallyplaced plates 28 29, two outer and two inner ones, between which plates sheaves 30 31 are rotatably mounted upon a shaft 32, extending through suitable openings in said plates. The sheaves 3O 31 are loosely mounted upon the shaft 32, and said shaft is supported in bearings 33, secured upon opposite sides of the outer plates 28.

A bucket-operating head 34 lies below the hoisting-head 26 and is detachably connected to said hoisting-head by means of a hook 35, pivotally mounted within said hoisting-head in position to engage a bolt 36, extending through said operating-head. The hook 35 has a rearwardly-extending arm 37 for manually (or automatically by means of a stopblock not shown) tripping said hook 35 to dump the load from the bucket.

The bucket-operating head 34 is pivotally connected, by means of links 39, with the bucket-operating arms 40, the lower ends of which arms are fixed to the sides of the bucket 41. The sides or sections of said bucket are also provided with the supportingarms 42, one at each end of each section, said arms being pivotally connected at their ends with a pivot-shaft 43, square in cross-section, except at the points where the supporting-arms 42 have a bearing, at which bearing-points said shaft is round. Near the middle portion of the shaft 43 an upwardly-extending unlocking-bar 45 is mounted, the upper end of which bar is pointed and adapted to engage the locking-latch 18. When the bucket-op erating head 34 is locked in its upper position by the hook 35, the two bucket-sections are held together by the arms 40 and said buc-ket thereby held closed. Chains 46, secured at their upper ends to the hoisting-head 26 by means of ears 47, extend downwardly and are connected to loops 48 on the shaft 43,-

A stop-block 51, comprising two plates 52, is provided upon the cableway, said plates being clamped upon opposite sides of the lower cable 14 by means of bolts 53, extend% ing through suitable openings in said plates.

When it is desirable to change the point at{ which the bucket is to be loaded, the nuts of the bolts 53 are loosened and the stop-block 51 moved, as desired, upon the cable 14.

Arms 54 are secured to the block 51, and be-i tween their upper ends said arms carry a roller 55, adapted to bear upon the upper cable 13, whereby the stop-block may be the more readily moved upon loosening the clamping-bolts '53. The stop-block 51 also is provided upon its opposite sides with the two pairs of stop-fingers 56 57, the former to engage the bar 22, connecting the upper ends of the arms 21 and by withdrawing the hooks 20 release the hoisting-head and the latter of hook form to be engaged by the latch 18 and hold the carriage 1 in position for the bucket to take its load.

In order to provide an unlocking or releasing means for the carriage when the bucket is raised in an open position, (in which position of the bucket the unlocking-bar 45 is not sufficiently elevated to raise the locking-latch 18,) I have supplied the following-described mechanism: The locking-latch 18 is provided with two downwardly-extending rods 58, formed from a single rod bent in U shape, said rods being loosely connected with said latch by means of the standing loop 59, secured to the under side of said latch. The rods 58 are guided by a bracket 60, suitably located in the carriage-body, and near their lower ends are connected by a crossbar 61,

said cross-bar being adapted to be engaged by the upper edges of the intermediate plates 29 of the hoisting-head 26. Thus when the unlocking-bar is not in position {to raise the latch 18 and release the'carriage 2 from the stop-block 51 the rods 58 perform that function. This latter auxiliary unlocking device may be used alone, if desired, and may be earth, coal, or other granular material is to be transported. According to the usual practice the end of the cable at the point from which the material is to be removed is lower than the opposite end of the cable, it being so arranged that the empty bucket will run by gravity to its loading position. The hoisting-engine (not shown) is located near the delivery end of the cableway. The stopblock 51 is secured upon the cable 14 over the loading-point.

In operating, when the carriage 1, supporting the open empty bucket upon the chains 46, approaches the stop-block 51 the free end of the locking-latch 18 is struck and raised by the wedging points of the hooks 57, said latch as the carriage proceeds a slight distance farther dropping behind the shoulders of said hooks and locking the carriage in position upon the cableway. At about the same time the arms 21 of the hooks 20 are engaged and tilted by the fingers 56, releasing the hoisting-head and permitting said head, with the open bucket, to descend as the hoisting-cable 10 is paid out by the rotation of the hoisting-drum. The-paying out of the cable 10 being continued, the bucket settles upon the material to be removed and the hoisting -head, continuing to descend, becomes connected with the operating-head 34 by reason of the hook 35 slipping over and engaging the bolt 36. Raising the hoistinghead and operating-head by winding up the cable 10 will now cause the bucket-sections to be drawn together, said sections inclosing between them a quantity of the material to be removed. In the continued upward travel of the bucket the unlocking-bar 45 and the raised portions of the intermediate plates 5290f the hoisting-head disengage the latch 18 from the hooks 57, freeing the carriage 1 from the locking-block 51, and as the carriage begins to move forward under the continued pull of the cable 10 the weighted hooks 20 engage the studs 25 and lock the hoisting-head to the carriage, Fig. 1. Upon arriving at the point where the load is to be discharged the bucket is dumped by disengaging the hook 35 from the bolt 36, which may be done manually or automatically, as hereinbefore stated; Upon the disengagement of the hook 35 the operating-head 34 and the bucket 41 drop by ravity to the limit of the chains 46, the weig t of the operating -head, bucket, and connecting arms causing the bucket-sectionsto swing apart upon their pivot 43. The unlocking-bar 45 being connected to the bucket also drops, permitting the latch 18 to rest upon the upper side of the carriage l in position to be engaged by the hooks 57. The bucket is now ready to be returned to the loading-point.

I claim as my invention 1. In a carrier, in combination, a carriage; alocking-latch pivoted thereon; a stop-block; two projecting hooks on the stop-block adapt ed to be engaged by the latch; a bucket movably supported with relation to said carriage; and a releasing-rod carried by the bucket, adapted to be projected upward between said hooks to disengage said latch and hooks.

2. In a carrier, in combination, a carriage; means for locking said carriage upon a way; a hoisting-head releasably connected with said carriage; an operating-head releasably connected with said hoisting-head; a bucket connected with said hoistinghead and said operating-head and means carried by said bucket for operating said locking means.

3. In a carrier, in combination, a carriage; a stop-latch pivoted on said carriage; a stopblock for said carriage, said block having a hook adapted to engage said latch; a hoisting-head releasably connected with said carriage; a bucket connected to said hoistinghead but arranged to have a vertical movement with relation thereto; and a releasingrod vertically movable with said bucket, the upper portion of said rod extending through said hoisting-head into position to engage said latch for disengaging said latch and said hook.

4. In a carrier, in combination, a carriage; means for locking said carriage upon a way;'a hoisting-head releasably connected with said carriage; an operating-head releasably connected with said hoisting-head a bucket connected with said hoisting-head and said operating-head; and a releasing-rod connected to move with said bucket, said rod extending through said operatinghead and hoistinghead into position to operate the carriagelocking means.

5. In a carrier, in combination, a carriage; a stop-latch pivoted on said carriage a stopblock having a hook adapted to engage said latch; a hoisting-head suspended from said carriage; and a rod depending from said latch into position to be raised by said head for operating said latch. v

DWIGHT G. LYMAN. Witnesses:

L. L. MILLER, GEORGE L. CHINDAHL.

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