US1448989A - Roller, drum, sheave, pulley, and the like - Google Patents

Description

Mar. 20, 1923.

c. s. ANDERSON ET AL ROLLER, DRUM, SHEAVE, PULLEY, AND THE LIKE Filed Mar. 21, 1921 ,c2nz Zojerf Mod Patented ll/llar, 2U, l fidu COVERDALE SMITH aNnnasoN, or Learner, a'Nn Bonn er woon, or nLNwroK, ENGLAND.

Application filed. March 21, 1921.

Serial No. 454,181.

(GRANTED 'uNnna rnn rsovtsrens or This ac"; or Nanci-i a, 1921, 41 s'rarn, 1313.)

To all whoa) it may concern:

Be it known that We, Covnnoann SMITH ANDERSON, of Shilbottle Colliery, Lesbury, and Bonner Woon, of 10 Howick Street, Alnwick, both of Northumberland, England, subjects of the King of Great Britain, have invented new and useful Improvements llelating to Rollers, Drums, Sheaves, Pulleys, and the like (for which I have filed application in England Dec; 11, 1918, Patent- No.

133835), of which the following is a specification.

This invention has reference to rollers, drums sheaves pulleys and the like of the kind which are built up of a plurality of revolvable elements mounted upon a hollow spindle or shaft having means for introducing lubricant to the interior thereof and for conducting said lubricant to the bearing surfaces of the revolvable elements and the shaft or spindle upon which they are mount ed for rotation.

More particularly the invention is concerned with guide pulleys, rollers or drums for haulage purposes where the traction rope chains or the like simply lies upon the roller which supports and guides it in its passage thereover and we will describe our inven tion as applied to a device for this purpose although it is to be understood that the invention is not to be considered limited to this specific application but is capable of adaptation to rollers drums sheaves and pulleys generally.

5 Theprimary object of our invention is to provide an improved device of the kind referred to which while being simple in construction and manufacture shall be capable of being readily dismount-ed so that any as worn or damaged parts may be replaced or repaired and in which the lubricant is supplied to the bearing surfaces in just sufficient quantities to effect efficient lubrication thereof without waste.

In order that our invention may be read ily understood and carried into efiect we will now proceed to describe the same in detail for which purpose reference will be made to the accompanying drawings in which:

Figure 1 represents a longitudinal section 1 of a haulage drum embodying thisinvention.

Figure 2 is a section taken on line a-a ofll ligure 1, and Figure 3 illustrates a detar.

In the embodiment of the invention illustrated the haulage druniv there represented comprises four appropriately sized rolls 1 mounted in juxtaposed relation upon a tubular spindle or shaft 2. The peripheral surfaces of they rolls are preferably of slight ly concave formation and each of the two outermost rolls may if desired be provided with a flange 3 to prevent disengagement of the haulage rope or chain with the drum. Each roll is formed with a slightly projecting boss 4: surrounding the aperture through which the shaft or spindle 2 passes so that when the separate rolls are assembled upon said shaft the bosses only of juxtaposed rolls will be in contact. By this means there will be formed a slight clearance between the individual roll sections '1 which will permit of rotary movement of each individual section independently of the others for a purpose which will presently be explained.

The tubular spindle 2 is made solid at each end such as by plugging it in the known manner and is extended beyond the ends of the assembled rolls 1 as indicated at 5 and 6 in Figure 1 whereby the roll or drum whole may be mounted in an appropriate frame or support (not shown) said ends 5 and 6 being preferably squared to hold said spindle against rotation. The end 5 of the spindle is provided witha collar 7 to main tain the roll sections 1 in positionupon the shaft and a washer 8 held in place by a looking nut 9 engaging the threaded portionof the shaft at the opposite end serves a like purpose.

An aperture 10 communicating withthe bore of the hollow shaft 2 is formed in said shaft whereby a suitable lubricant may be in troduced into said hole, the aperture 10 being normally closed by a nut 11 engaging the screw threaded portion of the shaft so as to make a sufficiently tight closure to prevent the admission of any considerable quantity of air. Obviously the nut 11 may be replaced by a spring cover or other known device employed for closing lubricating holes.

The shaft or spindle 2 is provided with a number of ducts 12 each having a piece of wick 13 or other similar material inserted therein to feed the lubricant from the bore of the shaft 2 to the bearing surfaces of the rolls. The ducts 12 are formed with countersunk portions 14: to retain the wick or the like 13 in position and prevent same being forced into the bore of the shaft 2, the holes being so formed that the widest portion of the countersink is at the outside of the shaft 2.

In using our improved device the haulage rope or chain simply lies upon the roll or drum and in accordance with the particular alignment of said rope or chain for the time being will automatically adjust itself to one or other of the sections 1 of the compound roll which will thus rotate independently of the remaining sections, this automatic selection of the sections 1 being facilitated by the aforementioned concave peripheral portions of the sections.

It will be apparent that a device embodying our invention posseses manifest advantages in practice. Owing to the fact that the haulage rope or chain causes the rotation only of that particular section of the drum with which it is in contact for the time being, wear of the drum a whole and. of

. the shaft 2 is considerably reduced, Furthermore any one or more of the sections 1 may be readily removed from the shaft 2 by removing thegnuts 9 and 11 and the washer 8 and a new or repaired section arranged in position.

Considerable economy in the use of the lubricant is also effected owing to the provision of the wicks 13 and of the nut 11 which latter obviously will prevent any considerable access of air to the bore of the shaft 2 through the aperture 10 so that the lubricant will'be fed mainly by capillary attraction of the wick thus preventing waste.

In cases where ourimproved device is to be employed in a vertical position provision may be made for the storage of a larger quantity of lubricant such as by extending the hollow spindle or providing it with a lubrieating cup of appropriate construction thus obviating the frequent replenishment of the lubricant.

I claim 1. A device of the kind referred to com prising a hollow shaft, a plurality of independently rotatable rolls on said shaft, a projecting boss on each roll whereby the circumferential edges of adjacent rolls are separated from one another, a flange on one side only of each of the outer rolls, concave peripheral surfaces on said rolls whereby the rope or the like on the rolls can more freely from one roll to the other in either direction, and means for lubricating said rolls.

2. A device of the kind referred to comprising a hollow shaft, a plurality of independently rotatable rolls on said shaft, a projecting boss on each roll whereby the circumferential edges of adjacent rolls are separated from one another, a flange on one side only of each of the outer rolls, concave peripheral surfaces on said rolls whereby the rope or the like on the rolls can move freely from one roll to the other in either direction, aflangenear one end of said shaft, a washer on said shaft, and a nut on said shaft for maintaining said washer and said. rolls in position on the shaft.

A device of the kind referred to comprising a hollow shaft, a plurality of independently rotatable rolls on said shaft, a projecting boss on each roll whereby the circumferential edges of adiacent rolls are separated from one another, a flange on one side only of each of the outer rolls, concave peripheral surfaces on said rolls whereby the rope or the like on the rolls can move freely from one roll to the other in either direction, a flange near one end of said shaft, a washer on said shaft, a nut on said shaft for maintaining said washer and said rolls in position on said shaft, a radial aperture in said shaft communicating with the hollow portion therein, and a nut on said shaft for closing said aperture.

4. A device of the kind referred to comprising a hollow shaft, a plurality of independently rotatable rolls on said shaft, a projecting boss on each roll whereby the circumferential edges of adjacent rolls are separated from .one another, a flange on one side only of each of the outer rolls, concave peripheral surfaces on said rolls whereby the rope or the like on the rolls can move freely from one roll to the other in either direction, a flange near one end of said shaft, a washer on said shaft, .athreaded portion on said shaft, a threadednut in engagement with said threaded portion for maintaining said washer and said rolls in position on said shaft, counter sunk holes in said shaft, wicks in said holes, an aperture in said shaft for the admission of lubricant, and a threaded nut in engagement with said threaded portion for closing said aperture.

oovnnnarn SMITH ANDERSON. ROBERT W001).

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