US1752333A - Haulage apparatus - Google Patents

Description

Filed Mayl6, 1925 5 Sheets-Sheet gwuenliov abkozmq April 1930 o. E. CLARK 1,752,333

' HAULAGE APPARATUS gwwntoc Omarlf Clark April 1, 1930. o. E. CLARK 1,752,333

HAULAGE APPARATUS Filed May 16. 1925 5 Sheets-Sheet 3 amarl'. Clark April 1, 1930. o. E. CLARK HAULAGE APPARATUS 5 Sheets-Sheet 4 Filed May 16. 1925 OmarL'. Clark attain/0g April 1, 1930. o. E. CLARK HAULAGE APPARATUS Filed May 16. 1925 5 Sheets-Sheet 5 Zlwuentoc OmarE L'Mrk Patented Apr. 1, 1930 UNITED STATES PATENT; OFFICE om r. CLARK, or nnnvna, coLonAno,

ASSIGNOR, IBY MESNE ASSIGNMENTS, TO

THE GARDNER-DENVER COMPANY, OF QUINCY, ILLINOIS, A CORPORATION OF DELAWARE Application filed May 16,

- drum type that can'be readi ytransported,

and yet is sufliciently powerful to perform many haulage operations, as for example,

the dra ging of scrapers or scoops between a point 0 loading and a point of delivery, the hoistin of heavy articles, and various operations 0 a similar character.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of a form of construction that is at present preferred,

Figure 2 is a top plan view,

Figure 3 is a sectional view taken on the line 33 of Figure 2,

Figure 4 is a sectlonal view taken on the line 44 of Figure 2,

Figure 5 is a detail sectional view of the clutch mechanism,

Figure 6 is a plan view of one of the clutch operating plunger heads.

In the embodiment disclosed, a base 8 is rovided, at one end of which are mounted rackets 9 formed with journal boxes 10. A

tubular shaft 11 has its ends journaled in said boxes, roller bearings 12 being preferably provided therefor.

Journaled on the tubular shaft and arranged end to end are winding drums 13 that are preferably duplicates in form, but arranged in reversed relation, the inner heads 14 being relatively plain in character, the outer heads 15 having outstanding annular flanges 16. The drums 13 preferably have bearing bushings 17, forming the inner walls of oil chambers 18 that are accessible for filling through openings closed by plugs 19. The bushings 17 have suitable ports 20, affording access to oil grooves 21, formed in the inner sides of the bushings, and thus distributing lubricant upon the portions of the shaft 11 on which the drums arejournaled.

Between the inner heads 14 of the drums 13 and surrounding the tubular driving.shaft 11 is a gear case 22, the lower portion of which 5 may be in'the form of an oil well 23 that can HAULAGE APPARATUS 1925. Serial in). 30,729.

be filled from the top through an opening closed by a detachable plug 24. Located in this gear case 22 and keyed or otherwise fixedly secured to the tubular shaft 11 is a worm gear wheel 25 that is thus located between the adjacent heads 14 of the drums 13. The base 8 is extended to one side of the drums and, as clearly shown in Figure 1, forms a platform 26, and on this platform is mounted a motor 27 that may be of any desired character, but is preferably a suitable electric motor. By referring to Figures 1 and 5, it will be noted that this motor is inclined downwardly and inwardly, and that its axis is disposed transversely to the driving shaft 11 and tangentially to the gear wheel 25. A motorshaft 28, having a flexible coupling 29 with the rotor of the motor, extends into the lower end 23 of the gear case 22, and carries within said gear case a worm 30 that is in mesh with the lower side of the worm gear 25. It will thus be evident that when the motor is in operation the tubular driving shaft 11 will be continuously rotated in one direction. I

The outstanding flanges 16 of the outer heads 15 of the drums 13 coact with the brackets 9 to form housings and in these housings are clutches for connecting the respective drums 13 to the driving shaft 11. These clutch mechanisms are duplicates and their structure, it is thought, will be clear by reference particularly to Figure 5. Secured to the driving shaft 11, within each of the flanges 16, is a head 31, this head preferabl having a split ring 32 surrounding the sha 11 and compressed thereupon by tension bolts 33 and being also keyed to the shaft, as shown at 34. An expansible split clutch ring 35, having a friction band 36 on its exterior, has its central portion mounted on a bracket 37 slotted, as shown at 38, to slidably receive the outer end 39 of the head 31. Other brackets 40 are secured to the ends of the ring and pivotally mounted on these latter brackets are extensible toggle links 41, pivoted together as shown at 42 and having a link connection 43 with a bell crank 44 that is pivotally mounted on one of the tension bolts 33, as shown in Figure 4. Coiled-springs 45 100 reciprocate within t e tubular shaft 11 and consists of terminal heads 46 connected by a tubular member 47. These heads have transverse slots 48 through them, in which are engaged the rounded inner ends 49 of the bell cranks 44, the ends of the tubular shaft 11 being also slotted as shown at 50, to permit the passage of said ends of the bell cranks. The outer ends of the plunger heads 46 have sockets 51. In one of these sockets is detachably secured by a universal ball mounting 52,- the inner end of a'link 53 that is pivoted to an actuating lever 54. The lever 54 is fulcrumed on a bracket 55 detachably bolted, as shown at 56, to one side of the base. By swinging the lever 54, it will be evident that the plunger 46-47 can be reciprocated within the tubular shaft 11.

The outer faces of the flanges 16 of the drums constitute braking surfaces engaged by brake bands 57, which can be operated by suitable manually operated heads 58 adjustably mounted on stems 59.

With this construction, it will be understood that-the motor always rotates in one direction and consequently the driving shaft 11 is always rotated in one direction. A haulage cable may be mounted on one of the drums 13 and a tail or return cable on the other, the two cables being correspondingly wrapped on their respective drums. When one of the drums is to be driven the actuating lever 54 is moved in one direction, thereby allowing one of the bell cranks 44 to swing upwardly and on the other hand positively swinging the other bell crank downwardly. The latter bell crank therefore pulls the toggle links 41, connected thereto inwardly,

straightening the toggle and causing the ex-' pansion of the clutch ring 3536, to which the toggle is attached. This expansion causes the friction, band 36 to engage the inner face of the flange 16 of one drum, thereby clutching said drum to the shaft and causing its rotation. In this clutching action it has been found that the particular arrangement of the toggle is advantageous for when it. is pulled inwardly, it has a tendency not only to expand the ends of the ring, but to force the central portionof the ring downwardly and therefore outwardly, causing a very complete expansion of said ring and its clutching action at all points. The amount of movement of the toggle can be varied by lengthening or shortening the toggle links. For instance it may be permitted to have a movement to bring the links into alignment,

or slightly past dead center so as to cause the automatic locking of the clutch. When one drum is thus clutched to the shaft, it will be obvious that the other will be free. Therefore, for example, if a haulage cable is bein wrapped upon the driven drum and a tail cable is on the other drum, the tail cable can pay off freely. When the lever is thrown into the opposite direction the drum that was formerly free becomes clutched to the driving shaft, while the former driven shaft is freed.

1 It will be clear from the drawings that the structure is a peculiarly compact arrangement, and the mechanism is exceedingly simple with a direct drive. It will be noted moreover that all the moving parts are carefully housed and thus protected against the entrance of injurious materials. As these haulage mechanisms or hoists are often used m of the apparatus, it only being necessary to.

detach the bracket 55 and bolt it to the opposite side'of the base, bolt holes 56 being provided for the purpose. The connection between the link 53 and the plunger is also readily removable from one of the plunger heads and can be readily engaged in and secured to the other head, the unused head preferably having a detachable closure plug 52 in the socket 51.

From the foregoing it. is thought that the construction, operation and many advantages ,of the'herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

What I-claim, is

1. In a hoist, the combination with a support, of a drivingshaft journaled thereon, drums journaled to rotate about the shaft, clutch mechanism for connecting the drums to and disconnecting them from the shaft, a clutch moving plunger longitudinally reciprocable within the driving shaft, and con- .nected to the clutch mechanism, an actuating lever, means for mounting the lever on the support at either end of'the shaft, and means for connecting the lever when so mounted to the adjacent end of the plunger. I

2. In a hoist, the combination with a recessed base, of a shaft journaled on the base above the recess thereof, drums journaled on the shaft, a gear wheel fixed to the shaft between the drums, a gear case between the drums enclosing the gear and including a bottom portion seated in the recess of the base and forming an oil well, a motor on the base, and a shaft driven by the motor and in gear with the gear wheel below the same in the oil well.

3. In a hoist, the combination with a base having spaced recesses, of a shaft journaled on the base above one of the recesses thereof, drums journaled on the shaft, a gear wheel fixed to the shaft between the drums, a gear case between the drums enclosing the gear and including a bottom portion seated in one of the recesses of the base and forming an oil well, a motor on the base and having its lower portion extending into the other recess of the base, and a downwardly inclined shaft driven by the motor and in gear with the gear wheel below the same in the oil well.

In testimony whereof I aflix my signature.

OMAR E. CLARK.

Images