US1861703A - Hoisting engine - Google Patents

Description

June 7, 1932. w. MACY HOISTING ENGINE Filed May 1, 1928 5 Sheets-Sheet l I. W. MACY HOISTING ENGINE June 7, 1932.

Filed May 1. 1928 5 Sheets-Shee 2 June 7, 1932. w. MACY 1,861,703

. HOIS'ITING ENGINE Filed May 1, 1-928 5 Sheets-Sheet 3 gwuento'o June 7, 1932. w, MACY 1,861,703

HOISTING ENGINE Filed May 1,-1928 5 Sheets-Sheet 4 4 /s i[ N is; I

June 7, 1932.

l. W. MACY HOISTING ENGINE Filed May 1, 1928 5 Sheets-Shee 5 Patented June 7, 1932 e new earlier wangry"! s 1 Una at? im ISHMAEL W. MAOY, F GALION, OHIO, ASSIGNOR TO THE GALION IRON WORKS & MFG.

00., OF GALION, OHIO, A CORPORATION OIE OHIO HOISTING ENGINE Application filed May 1, 1928. Serial No. 274,320.

level and then caused to traverse horizontal ly to any desired point as, for example, to a position over a bin and lowered into the bin, discharged, then hoisted, and traversed back again to a position above the pit or other loading point where the bucket or carrier is again lowered and charged, and more particularly this invention relates to the winding drum or apparatus whereby the bucket is raised, lowered and shifted horizontally.

One of the objects of this invention is to provide on a single power operated shaft, a pair of drums, one being a hoisting drum and the other a traversing drum, and provide clutch operated means whereby the hoisting drum may be operatively connected to the shaft or allowed to run freely, and means whereby the traversing drum may be connected to the shaft to cause it to rotate in either direction, and in this connection to provide brake mechanism for the traversing drum and the hoisting drum, means acting to apply the brake to the hoisting drum whenever the clutch of the hoisting drum is released, and provide means for automatically releasing the hoisting drum clutch and applying the brake when the skip or bucket reaches a predetermined elevation.

A further object is to provide a manually controlled clutch means whereby to cause the rotation of the traversing drum in either direction and automatically apply the brake to the traversing drum when either clutch mechanism is shifted out of clutching position.

A still further object is to provide a single operating lever for both clutches of the traversing drum, which lever must always be shifted from an engaged position with one clutch into a neutral position beforeit can be engaged with the other clutch.

Another object is to provide a hoisting drum indicator so connected to the hoisting drum as to move therewith and indicate the position of the ship as it is raised or-lowered, and provide means actuated by a part movable with the indicator which Will automatically release the clutch of the hoisting drum and permit the immediate application ot the brake to the hoisting drum when the indicator has traveled upward to a predetermined height, that is, to the greatest height to which the bucket is to be hoisted, so that the attendant does not have to pay any attention to or Watch the bucket as it rises to determine just when the hoisting bucket has reached its highest elevation where the brakes will be applied to the hoisting drum and the traversing drum should be operated.

Other objects have to do with the details of construction and arrangement of parts as will appear more fully hereinafter.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a longitudinal sectional view of hoisting mechanism embodying my invention;

Figure 2 is a top plan view thereof;

Figures 8 and 4 are detail views of the brake rod employed for the traversing drum;

Figure 5 is an end elevation of the mechamsm;

Figure 6 is a fragmentary side elevation showing particularly the automatically operting brake for the hoisting drum;

Figure 7 is a detail sectional view on the line 7'Z' of Figure 1;

Figure 8 is a section on the line 8-8 of Figure 7 Figure 9 is a detail view of the clutch arm of lever which is connected to the live end of the clutch band for the hoisting, drum;

Figure 10 is a section taken on the line 101O of Figure 1;

Figure 11 is an enlarged detail sectional view of one of the thrust collars for the clutches of the traversing drum;

Fi ure 12 is a detail view'of the brake for the traversing drum;

Figure 13 is an enlarged detail view of the stub levers designed to operate the clutches of the traversing drum and automatically and simultaneously operate the brake for such drum.

Referring to these drawings, 10 designates generally the supporting base of the winding drum which includes the three upwardly extending bearing pedestals 11, 12 and 13. Mounted upon these pedestals in bearings 14 is a single longitudinally extending shaft 15 which is to he operatively engaged with the driving means of any suitable character, which may be an electric motor, for instance, or gear wheels receiving power from any suitable source of power.

The shaft 15 carries upon it a hoisting drum 16 and a traversing drum 17. The hoisting drum 16 has thereon a cable (not shown) which is trained up over suitable pulleys (not shown) and is connected to a hoisting bucket-"such as illustrated, for instance, in

my pending application for patent Serial 275,477 filed on the fifth day of May, 1928, which is now Patent No. 1,772,777, dated August 12, 1930, and while this winding mechanism is particularly designed to be used with a hoisting bucket of the character shown in this application, I do not'wish to be limited thereto as obviously this winding mechanism mig t be used in any situation where it was applicable.

The hoisting drum 16 is hollow and is loose upon the shaft 15 and at one end the hoisting drum is formed with the annular flange 18 which constitutes a brake drum upon which the brake band 19 operates. The opposite end of the hoisting drum is formed to provide a hollow clutch drum 20 over which a clutch band 21 operates. S'lidahly mounted upon the shaft 15 is a clutch sleeve or collar 22 having an annular channel within which is disposed the usual shipper yoke 23, this yoke being connected to a lever 24.

Disposed within the clutch flange 20 of the hoisting drum is a rotatable support 25 which is keyed to the shaft 15 and rotates therewith (see Figure 7 This support or clutch driver at its lower end has the sector-shaped portion 26 and extends upward nearly to the flange 20, then extends laterally, as at 27, and

then upward at 28 over the rim 20, as at 29, so that this angular portion composed of the parts 27, 28 and 29 embraces the rim and overhangs the same, this portion 29 consti- "T tuting the anchor for the dead or fixed end of the clutch band 21.

Projecting laterally from the clutch driver or support 25 is a pin 30 upon which is mounted the clutch arm or lever 31 which is, of

course, disposed exteriorly of the hoisting 33 will swing the lever or arm 31 upon its pivot, thus causing the clutch band to close upon the clutch drum or flange 20 and thus lock the hoisting drum to the driving shaft 15. When the collar 22 is shifted away from the hoisting drum, the reverse action takes place and the clutch band is relaxed so that the drum runs free of the shaft. The reduced extremity ofthe lever 31 carries upon it a roller 34a.

This roller operates over a lateral extension 35 on the arm 25. Attached to the sectorshaped portion 26 of the arm is a band 36 which constitutes a hanger and extends down beneath the clutch band 21 to support the same when the clutch band is relaxed.

As before remarked, the opposite end of the drum 16 from the clutch end is formed to provide a brake drum or flange 18 and the brake band 19 extends around this drum or flange. One end of this brake band 19 is provided with a bolt 37 which passes through an abutment 38 formed on the supporting base, the other end of the band being free.

For the purpose of contracting the brake band upon the brake drum or flange, I provide a lever 39 (see Figure 6) pivotally mounted at 40 upon the base and having an angularly projecting arm 41 and a downwardly projecting arm 42. The lever 39 is, therefore, a three-armed lever, the arm 41 being connected by the strap or link 43 to the free end of the brake band 19. The depending arm 42 is operatively connected by the clips 44 to the contractile spring 45, this spring in turn bein connected to an adjusting screw 46 extending through an abutment 47 on the base. The upwardly extending arm of the lever 39 is connected to a rod 48 extending longitudinally of the base, this rod being s connected to a yoke 49 formed with a medially disposed slot 50 through which a transverse shaft 51 extends, and this yoke is provided with two oppositely extending portions 52 and 53. Mounted upon the shaft 51 is a :1?

two-armed lever 54 having rollers 55 which engage against the feet 52 and 53 of the yoke.

Thus when the shaft 51 is turned in either direction, one or the other of the rollers 55 will engage with the yoke and retract the yoke to thus slacken up on the brake band 19 or release the brake hand. So long as the lever 54, therefore, is turned from its normal position, that is, the position shown in Figure 6, the brake will remain released, but as 7213 soon as the lever 54 is allowed to return to its normal position, the spring 45 will act to re tract the lower end of the lever 39, thus drawing downward upon the arm 41 and drawing the brake band into braking engagement with As shown in Figure 5, the shaft. 51 extends transversely across one end of the machine and is mounted in brackets 56. Carried fast upon the shaft is the lever 57, and also mounted upon the shaft to oscillate thereon is the, lever stub 58, the upper end of which is seetorshaped, as at 59. The lever 57 carries upon it the spring actuated locking'pin 66 adapted to engage in a recess in this arcuate member 59, this pin being capable of retraction by the finger piece 61 in a well known manner. The lever section 58 which, of course, when locked to the lever 57 constitutes an extension or prolongation thereof, has a depending nose 62 adapted to be engaged by a pivoted latch 63, this latch being pivoted upon a bracket 64 and being mounted upon or carried by a short transverse shaft 65.

This shaft has an arm 66 connected to a spring 67 whereby the latch is urged upward or into latching position, and this shaft also carries upon it the longitudinally extendarm 68 and the downwardly and forwardly extending foot piece or treadle 69. When the lever 57 is pulled to the left in Figure 1, it shifts the connecting rod 70 rearward, this connecting rod being connected to the clutch shifting lever 24. Therefore, when the lever 57 is pulled to the left in Figure 1, the clutch is applied and the clutch remains applied until the latch 68 is released either by a depression of the treadle 69 by the foot of the operator or by an automatic release, which will now be described.

The hoisting drum 16 carries upon its hub at the end of the hoisting drum remote from the clutch the beveled gear wheel 71. This beveled gear wheel engages with a beveled gear wheel 7 2 which carries upon it the vertically disposed screw or worm 78. This is operatively supported in a standard 74 which is fully described and shown in my pending application Serial #274,319 filed on the first day of May, 1928, which is now Patent No. 1,712,045, dated May 7, 1929. Operating upon this worm or screw 7 8 is a traveler 75 which constitutes an indicator and moves over a scale 76 and indicates the position of the bucket, or in other words when the indicator rises to its full extent allowed, the bucket has risen to the full extent allowed, and when the indicator has descended to its fullest extent it indicates that the bucket has descended into the pit. Disposed at the up per end of the screw-threaded rod 73 and adapted to be engaged and lifted by the traveler 75 when the latter has nearly reached its uppermost position is a collar 77.

This collar has attached to it a chain 78.

The chain extends downward over suitable guide sheaves or pulleys 79 (see Figure 5) and guided forward and eventually is attached to the arm 68 which, as before stated, mounted upon the shaft which supports the latch 63. Thus, assuming that the lever 57 determined and the traveler 75 strikes the M collar 77, the collar will be lifted, retracting the chain 78 and retracting the latch 63. As soon as this latch has been released, the spring 45 will act through the lever 39 to retract the yoke 49 to its normal position and at the same time the spring 45 will act through the lever 39 to apply the brake 19 to the hoisting drum.

It will thus be seen that when the lever 57 is operated in one direction, the brake is immediately released and the clutch applied to the hoisting drum to cause it to wind up on the cableand lift the bucket, and that at any time the lever 57 may be released and the clutch released and the brake applied to the hoisting drum by depressing the treadle 69, and that if the operator should neglect to release the clutch and hoisting drum when the bucket has been hoisted to its full extent, the clutch will be automatically released the brake automatically applied as soon as the bucket has reached this predetermined height where it is ready to be traversed over the several bins or to any desired point.

This mechanism, therefore, relieves the operator of the necessity of watching the hoisting of the bucket and noting when the bucket has reached its predetermined elevation in order to release the clutch and apply the brake and at the same time forms a safeguard against the drum continuing to operate or attempting to continue its operation after the bucket has been hoisted to the full extent, thus breaking some of the parts of the hoisting apparatus.

It is to be understood, of course, that the operator in hoisting the bucket applies power to the hoisting drum for this purpose and that the hoisting drum remains held in position with the bucket hoisted while the traversing drum is operating to traverse the bucket to the desired point for descent into a bin and back again, and that when the traversing bucket has returned to a position over the pit (which is shown in the hoist and traverse indicators disclosed by and illustrated in application Serial #274,319 filed on the first day of May, 1928, before referred to), the operator pushes upon the lever 57,

after releasing the lever from the sector 59 of the lever stub 58 which turns the shaft 51 in a reverse direction and causes the cam lever 54 to oscillate and one of the rollers 55 to force the yoke 49 rearward, thus releasieo to again engage the hoisting drum and stop the bucket before it quite reaches the bottom of the pit.

Mechanism is provided in the pit for guiding the hoisting bucket into place beneath a spout leading from a hopper and automatically lowering the spout so as to discharge the contents of the hopper into the hoisting bucket. This construction is fully described in my pending application Serial #274,318 filed on the first day of May, 1928 which is now Patent No. 1,705,986, dated Mar. 19, 1929.

The traversing drum 17 is also loosely mounted upon the shaft 15 so as to rotate freely on the shaft. This drum is provided with the outer circumferential channelshaped flange upon which the traversing cable is wound, and inward ofthis flange with a flange 80 which I will hereafter designate the clutch flange. Surrounding this flange is the clutch band 88. Keyed upon the shaft 15 is a traction clutch driver 82 (see Figure 10) which is formed with a depending portion 83 having a bearing 84 upon which the clutch operating arm 85 is mounted, and said depending portion 83 also has a hearing 84a upon which an arm 85a is pivotally mounted, said arm 85a being connected to the dead end of the clutch band 88 and carrying on the opposite side of its pivot 8464 an adjusting screw 85b for obvious purposes.

Mounted on the pivot stud 84 is the clutch arm 85 which is connected at one end, as at 86, to the live end of the clutch band 88, the other end of the clutch operating arm 85 carrying a roller 87. For the purpose of operating the clutch arm to tighten the band upon the clutch drum 80,1 provide the clutch thrust collar 89 slidingly keyed upon the shaft 15 to rotate therewith but slide toward or from the member 82, this collar being circumfei entially grooved for the shipper ring 90.

Plus shipper ring 90 is connected by the usual yoke to a lever 91 pivoted upon a bracket 92 mounted upon. the base of the machine. This thrust collar 89 is formed with an outwardly projecting wedge-shaped linger 93, (see Figure 3) and when the thrust collar is shifted toward the left in Figure 1, this finger enters behind the roller 87 of the arm 85 and moves said arm in a direction to cause the tightening of the clutch band 88 upon the clutch flange 80. When the collar 89 is shifted away or toward the right in Figure 1, the Wedge will be withdrawn from the roller and the clutch band, of course, will slacken upon the drum or flange 80, permitting the drum to run free.

v The clutch collar 89 will cause the traversing drum to rotate with the shaft, but for the purpose of causingthe traversing drum to rotate reversel to the shaft 15, I provide a reversing clutc spider and drum, designated generally 94. The hub of this spider is loose the beveled gear 95 to the beveled gear 96 and thus to the traversing drum. For the purpose of clutching the-spider 94 to'the shaft 15, I provide the clutch driver 98 which is constructed in the same manner as the clutch driver 82 and provided with an arm 99 upon which is pivotally mounted the swinging arm 100. This arm at its outer end is connected by a pin to the live end of the clutch band 101 and at its inner end carries a roller. 1

Slidingly mounted upon the shaft 15 is the clutch actuating'collar 102 having the wedgeshaped finger 103 and having a circumferential groove wherein is disposed the ring 104, which ring is engaged by a lever 105. It will be seen that when the clutch collar 102 is shifted inward, the clutch band 101 will be tightened, the clutch driver thereof will be operatively connected to the shaft, and power will then be transmitted through the beveled gear wheel 95 to the pinions 97 and then to the beveled gear wheel 96' and thus to the traversing drum 17, and that the traversing drum under these circumstances will rotate in a direction reverse to'the direction of rotation of the shaft 15. Thus by throwing one or the other of these clutches into position, the traversing drum may be caused to move either in a clockwise or counterclockwise direction. The transmission beveled gear wheels 95 and 96 and the beveled pinions 97 are protected by means of a guard and cover 106.

In order to provide a brake for the drum 17 1 form the spider 94 with a brake surface 107, and pivotally mount upon the base of the machine and specifically upon the intermediate pedestal'108 a brake lever 109. This is pivoted at 110 and carries a curved brake shoe 111 (see Figure 2). The lever extends downward and at its lower end is connected to a contractile spring 112, in turn at its forward end connected to any suitable part of the frame as, for instance, the bracket or clip 113. It is obvious that this spring will cause the application of the brake to the spider and that this willact to check or stop the rotation of the traversing drum without regard to the direction in which the drum is operating.

The brake is operated as will be hereafter stated. F or the purpose of operating the clutch levers 91 and 105, I mount loosely upon the shaft 51 the lever stubs 114 and 115. Each of these stubs at its upper end is formed with an arcuate flange 116 having a notch 117. The lower end of the stub 114 is connected by the longitudinally extending rod 118 to the clutch shifting lever 91, while the other stub 115 is connected to the clutch shifting lever 105 by the link 119.

Disposed between the two lever stubs 114 and 115 is a control lever 120 which at its lower end fits loosely upon the shaft 51 and in its neutral position is disposed within the slots or notches 117 of both lever stubs 1'14 and 115 and is thus held from actuation. The brake lever 109 is connected by a connecting bar 121 which extends toward the lever stubs 114 and 115 and is operatively engaged therewith. The lever bar at one end, (see Figures 3 and 4) is bifurcated to embrace the brake lever 109 and also slotted to engage a transverse pin 109a on the brake lever and at its opposite end it is formed with a relatively wide yoke 122, the arms of the yoke being slotted, as at 123. The slots 123 permit the passage of the shaft 51 so that this lever rides upon the shaft or upon the hubs of the stub levers 114 and 115. The cross bar 124 of the yoke is adapted to be engaged either by an upper lug 125, shown in dotted lines in Figure 13, or a lower lug 126 on the stub levers 11-1 and 115 so that when the lever 120' is pulled rearward so as to shift the clutch lever 91 in position to bring its corresponding clutch into engagement with the drum, the lug 126 will engage the yoke and force the yoke rearward against the action of the spring 112, thus releasing the brake from the clutch drum.

When this lever 120. is engaged with the other stub lever and pushed forward, it will engage the clutch lever 105 and operate the clutch engaging the spider 94c and simultaneously the upper lug 125 will engage the cross bar 124c of the yoke and force this connecting rod rearward, releasing the brake. It will thus be seen that I have provided means whereby when the lever 120 is forced either forward or rearward to cause the rotation of the traversing drum either in one or the other direction, the brake on the traversing drum will be retracted so as to permit the free movement of the traversing drum, but whenever the lever 120 is brought back to its neutral position the spring 112 will cause the application of the brake to the traversing drum.

The operation of the mechanism has been described incidentally to the description of the mechanismitself, but it is believed that a general recapitulation of the operation is advisable. As before remarked, the hoisting drum 16 has a hoisting cable thereon and is connected to the bucket by means (not shown) so that when the hoisting drum is operated the bucket will be raised or lowered. The traversing drum is also connected to a cable whereby the bucket may be traversed after it has reached its highest position over any desired bin, then the hoisting drum is operated to lower the bucket into the bin, the bucket discharging automatically within the bin by means described in my application Serial #274,318 heretofore referred to. After the bucket has discharged its contents, it is then raised by the hoisting drum, traversed by the traversing drum to a position above the pit, then lowered by the hoisting drum, so that it descends into the pit, and is then automatically loaded.

An indicator is provided showing the position of the bucket as it moves horizontally over any desired bin so that the operator can always tell the exact position of the bucket, whether it is over the pit and adapted to be lowered into the pit or whether it is over the desired bin and ready to be lowered into this bin. This indicator is shown in my application Serial #274:,3l9. The indicator for showing the elevation of the bucket is also disclosed in thislast named application but is partially disclosed in the present application.

The operation'of the hoisting drum is entirely controlled by the lever 57 which operates the clutch mechanism so as to clutch the drum to the shaft or free the drum from'the shaft. When the bucket reaches a height be yond which it should not go, or in other words the limit of its upward movement, the hoisting drum is automatically disconnected from the shaft and the brake applied thereto or the bucket may be raised to any desired height by the operator and then stopped at this height by actuating the treadle 69. When the operator desires to lower the bucket into the pit, he pushes the lever 57 away from him, which causes the free descent of the bucket into the pit, but as soon as the operator brings the lever 57 back to its normal position, the brake is applied and the bucket held. The traversing drum is controlled entirely bv the controlling lever 120. When it is desired to cause the traversing drum to rotate in one direction, the lever 120 is shifted to the right in Figure 1 to engage with the stub lever 115 and the lever drawn rearward. This releases the brake on the traversing drum.

As soon as the lever has shifted to its neutral position again, the brake is applied. WVhen the lever has been brought to itsneutral position, it then may be shifted into engagement with the other stub lever as, for instance, the stub lever 114C and the lever may be then pushed forward to cause the actuation of the proper clutch and the rotation of the drum 17 in a reverse direction. Both of these actuations of the lever 120 immediately release the brake before the clutch is engaged.

Special attention is called to the fact that the lever 120 cannot be shifted to throw in one clutch and throw out the other without bringing the lever to a neutral position and causing the application of the brake to the traversing drum. Thus there is no danger of one clutch remaining in engagement when the other is thrown on or any danger of too sudden change in motion'which would place great strain upon the traversing mechanism and upon the cables. The traversing drum is always stopped in its movement before it can be reversed.

While I have illustrated certain details of construction and arrangement of parts which I have found to be particularly efiective for the purpose intended, obviously certain minor changes might be made without departing from the spirit of the invention as defined in the appended claims.

I claim 1. A hoisting mechanism including a power operated shaft, a hoisting drum loose thereon, a brake urged into braking engagement with thedrum, a clutch foroperatively connecting the drum to the shaft and including a member shiftable into or out of clutching position, and resilient means urging the brake to applied position and the clutch to rel-ease position, a single manually controlled means for shifting the clutch member into operative position and simultaneously releasing the brake against the action of the resilient means, a latch adapted to hold the clutch in its clutching position against the action of the brake urging means, said latch being man ually releasable, and means for automatical ly releasing the latch to permit the application of the brake by the urging means when the object being hoisted has reached a predetermined position.

2. In a hoisting mechanism, a hoisting drum, a shaft upon which the drum is loosely mounted, a clutch for operatively connecting the hoisting drum to or disconnecting it from the shaft, manually operable means for shifting the clutch into or out of engagement with the drum, means for latching the clutch in engagement with the drum, means urging the clutch out of engagement with the drum, and means acting to release said latching means when the article being shifted by the drum has reached a predetermined position.

3. In a hoisting mechanism, a hoisting drum, a shaft upon which the drum is loosely mounted. means for clutching the drum to the shaft or unclutching it therefrom, a brake for the drum, manually operable means for simultaneously applying the clutch and releasing the brake, means for latching said manually operable means in the last named position, means urging the brake to applied position and the clutch to a released position, and means releasing said latching means when the article being vertically shifted has reached a predetermined position.

4. In a hoisting mechanism, a shaft, a drum loosely mounted upon the shaft, means for clutching the drum to the shaft or releasing ittherefrom', a brake for the hoisting drum, means urging the brake to applied position, manually operable means for shifting the clutching means into operative engagement with the drum and simultaneously releasing the brake, a latch holding the clutch applied and the brake released, means for automatically releasing the latch when the article being hoisted has arrived at a predetermined position comprising a driving member actuated by the rotation of the drum, a traveler actuated'by the driving member and shiftable along a predetermined course as the drum rotates, and a member disposed in the path of movement of the traveler and adapted to be engaged by the latter when the latter reaches a predetermined position, said member being operatively connected to the latch to release it when the member is engaged by the traveler.

5. In a hoisting mechanism, a shaft, a drum loosely mounted upon the shaft, means for clutching the drum to the shaft or releasing it therefrom, a brake for the hoisting drum, means urging the brake to applied position, manually operable means for shifting the clutching means into operative engagement with the drum and simultaneously releasing the brake, a latch holding the clutch applied and the brake released, means for automatically releasing the latch when the article being hoisted has arrived at ,a predetermined position comprising a screw actuated by arotation of the drum, a traveler having screw-threaded engagement with the screw and movable therealong in one direction or the other by the rotation of the drum, and a member disposed in the path of movement of the traveler and-operatively engaged with said latch to release the same when the member is engaged by the traveler. V

6. In a hoisting mechanism, a shaft, a drum loosely mounted upon the shaft, means for clutching the drum to the shaft or releasing it therefrom, a brake for the hoisting drum, means urging the bra'ke to applied position, manually operable means for shifting the clutching means into operative engagement with the drum and simultaneously releasing the brake, a latch holding the clutch applied and the brake released, means for automatically releasing the latch when the article being hoisted has arrived at a predetermined position comprising a vertically disposed screw, means engaged by the drum for retating the screw, a traveler having threaded engagement with the screw and shiftable in opposite directions by a rotation of the screw in one direction or the other, a member disposed in the path of movement of the traveler, and a flexible connection between said member and said latch to cause the release of the latch when the flexible member is placed under tension by the engagement of the traveler with the member.

7. In a hoisting mechanism, a hoisting drum, a brake therefor, a sprin urging the brake to applied position, a bralie lever connected to the brake and spring and adapted when shifted in one direction to apply the brake, a connecting rod to the brake lever, a yoke thereon, a shaft extending through the yoke and upon which the yoke is adapted to shift rectilinearly, the shaft carrying a double-armed lever engaging against the yoke at its opposite ends, a manually shiftable lever connected to the shaft to oscillate it, a lever stub loosely mounted on the shaft to which the manually operable lever is detachably latched, a clutch for the drum,

means connected to the stub whereby the clutch is thrown in by a movement of the stub in one direction under the action of the manually controlled lever, and manually releasable means for latching the stub when the clutch is thrown in.

8. In a hoisting mechanism, a hoisting drum, a brake therefor, a spring urging the brake to applied position, a brake lever con nected to the brake and spring and adapted when shifted in one direction to apply the brake, a connecting rod to the brake lever, a yoke thereon, a shaft extending through the yoke and upon which the yoke is adapted to shift rectilinearly, the shaft carrying a double-armed lever engaging against the yoke at its opposite ends, a manually shiftable lever connected to the shaft to oscillate it, a lever stub loosely mounted on the shaft to which the manually operable lever is detachably latched, a clutch for the drum, means connected to the stub whereby the clutch is thrown in by a movement of the stub in one direction under the action of the manually controlled lever, manually releasable means for latching the stub when the clutch is thrown in, and means controlled by a predetermined rotation of the drum in one direction acting to automatically release said latch.

9. A winding apparatus including a single driving shaft, a hoisting drum and a traversing drum loose thereon, direct drive and reverse drive clutches for the traversing drum, a clutch for the hoisting drum, brakes for the two drums, means for resiliently urging the brakes into engagement with the drums, a transverse shaft mounted at one end of the winding apparatus, and a pair of control levers mounted upon said transverse shaft and operatively engaged with the traversing drum clutches and the traversing drum brake and with the hoisting drum clutch and brake respectively.

10. A winding apparatus of the character described including a single driving shaft, :1 traversing drum loosely mounted thereon, direct drive and reverse drive clutches for the traversing drum operatively engaged with the shaft, a brake for the traversing drum, means for resiliently urging the brake into engagement with the drum, means for operating the clutches and simultaneously releasing the brake comprising a shaft,

two stub levers mounted upon the shaft and operatively connected to the respective clutches, a control lever mounted upon the shaft between the stub levers and shiftable laterally when in a neutral position into engagement with either stub lever, and brake releasing means coacting with the stub levers and shifted by amovement of either stub lever to its clutch applying position in a direction to release the brake.

11. A winding apparatus including a single driving shaft, a traversing drum loosely mounted thereon, direct drive and reverse drive clutches for the traversing drum shiftably mounted upon the shaft and normally out of engagement with the drum, abrake for the drum, means for resiliently urging the brakes into engagement with the drum, means for controlling the brake and clutches comprising a transverse shaft, a pair of stub levers mounted upon said shaft for independ ent oscillation, means connecting each of said stub levers operatively with the corresponding clutch, one of said stub levers being mov- .able forward from a neutral position to actuate the corresponding clutch and the other being movable rearward from a neutral position to actuate the corresponding clutch, a control lever disposed between the two stub levers and shiftable when the latter and the control lever are in neutral position from engagement with one stub lever into engagement with the other whereby the engaged stub lever may be shifted, and brake-releasing means comprising a connecting rod operatively connected to the brake and disposed across the path of movement of the two stub levers and shifted toa brake-releasing position by a movement of either stub lever toward its clutch actuating position.

12. A hoisting mechanism including a power operated shaft, a drum loose thereon, a brake for the drum, resilient means urging the brake into braking engagement with the drum, direct and reverse clutches for the drum, a lever manually shiftable from a neutral position to operatively connect one clutch or the other with the drum, said lever when shifted in either direction from a neutral position releasing the brake but acting when returned to a neutral position to permit the application of the brake by said resilient means.

In testimony whereof I affiX my signature.

ISHMAEL W. MACY.

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