US1287853A - Pulling and hauling machine. - Google Patents

Description

S. P. BRADLEY.

PULLING AND HAULING MACHINE.

APPucmloM FlLF" 00113, 1916 Patenwa D c. 17, 1918.

3 SHEETSSHEET l- INVENTOR ATTORNEY S. P. BRADLEY.

PULLING AND HAULlNG MACHINE.

APPLICATION FILED 0cT.1a. 191s.

Patented Dec. 17, 1918.

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S. P. BRADLEY.

PULLIFG AND mums MACHINE.

APPLICATION F ILED OCT. 13. I916.

Patented Dec. 17, 1918.

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TEN @FFICE.

SOLON PHILO BRADLEY, OF CORNELL, WISCONSIN.

PULLING AND HAU LING MACHINE.

Application filedcflctober 13, 1916.

To all whom it may concern:

Be it known that I, SoLoN, PHILo BRAD- LE1, citizen of the United. States, residing at Cornell, in the county of Chippewa and State of lVisconsin, have invented certain new and useful Improvements in Pulling and Hauling Machines, of which the following is a specification.

This invention relates to a stationary machine for pulling and hauling generally, and has for its principal object to provide a machine of this class which is adapted to pull and haul road graders, stumps, plows, to move buildings, and all other work of this kind which depends upon the operation of a cable and a winding drum. Anotherobject of the invention is to provide a machine of this class with a winding drum and cable and two independent mechanisms connected thereto for rotating said drum, one of said mechanisms designed to revolve the drum at relatively rapid speed with light power and the other at a much slower speed but with far greater power to be used for short pulls as occasion demands.

A still further object of the invention is to provide a pulling and hauling machine ha ing the two types of mechanisms set forth, and means for quickly applying either one or the other for operating the winding drum, whereby many other advantages as that of quickly taking up the slack in the cable and then without shock or strain upon the machine to apply power of the other mechanism to exert the in creased hauling power on the cable for performing such duties as are required of the machine.

In addition to the above advantages, there are many others such as the use of belt tighteners for coupling the prime mover with the two mechanisms for operating the drum; a movable guide for maintaining the cable always in line with the grooves on the winding drum and at the same time maintaining the cable in proper line from the drum to the base at a distance to which it is attached and by the use of an apron to be applied to the winding drum over the first layer of the cable, about which apron a second layer of the cable is wrapped and thus prevented from contact with the first layer and cause undue wear by the rubbing of the layers of the cable one upon the other.

With these as the principal objects in vie the in ention consist ofthe n el Specification of Letters Patent.

Patented Dec. 17, 1918. Serial No. 125,485.

construction, combination, and arrangement of parts hereinafter described, pointed out in the claims, and illustrated in the accompanying drawings, in which- Figures 1 and 1 show a side elevation of the complete machine, Fig. 1 being a con tinuation of Fig. 1,

Figs. 2 and 2 representplan view of the machine, Fig. 2 being a continuation of Fig.

v Fig. 3 is a vertical cross sectional view of the machine on the line 33 of Fig. 2,

Fig. 4 is a cross sectional view through one end of the winding drum showing certain details of the winding mechanism,

Fig. 5 is an enlarged detail sectional view on the line 55 of Fig. 4, and

Fig. 6 is a view of a portion of an apron designed to be placed on the winding drum between the coils of the cable.

In the drawings, 10 indicates the entire frame of the machine comprising two longitudinal beams 11 extending from end to end of the frame adapted to rest upon the ground and placed parallel to each other a suitable distance apart, being connected by suitable cross beams for the purpose of maintaining proper space therebetween. At a suitable distance above each beam 11 is a metal beam 12 lying parallel to the beam 11 and having downwardly and outwardly inclined ends 13 that terminate at their lower ends with feet 13 bolted to the ends of the beams 11. In termediate the ends of the metal beams 12 and connected thereto at suitable points to provide supports for the mechanism carried by the beam 12 are inclined braces 14 that extend downwardly to the beams 11 and are bolted thereto.

Between the beams 12 and extending from one to the other is a winding drum 15 fixed on a cross shaft 16 turning in bearings bolted on the top of the beams 12 about midway between the ends of the frame 10. On each end of the winding drum is fastened a spur gear wheel 18 between which gears the drum 15 is spirally grooved as shown to receive the turns of a cable 19 as it is wound about the drum. Pinions 20 whichmesh with the spur gears 18 for the purpose of rotating the drum are fixed on a transverse shaft 21, parallel with the shaft 16, journaled in bearings bolted to the beams 12 and carrying on one end beyond the frame 10 a belt-wheel 22, around which passes a belt 23 that'als o encircles a belt-wheel 24c ucl keyed on driving shaft 25, connected in any suitable manner with the prime mover, not shown, but which may be a steam engine, an internal combustion engine, r an electric motor. Fixed on the shaft close to the pulley 24 is another belt pulley :26 that drives a belt 27 extending toward one end of the frame to engage a belt-pulley 28 on a shaft 2-9 turning in bearings mounted on the frame 10 below the beam 12.

One end of the drum shaft 16 extends beyond the bearing 17 therefor and is fur nished with a worm 3O engaging the teeth of a worm wheel 30 keyed on the end of a longitudinal shaft 31, turning in bearings 32 that project outwardly from the beam 12, said shaft extending toward the end of the machine opposite that in which the shaft 29 turns and terminating with a crank disk 33, to the crank pin of which disk one end of a pitman 3% is connected, the other end being connected to a. bar 35 that extends across the frame .10 and slides longitudinally in bearings 36 supported on the frame. intermediate the ends of the bar is an enlargement 37 having a horizontal slot therein within which slot are mounted two guide pulleys 3S turning on pivots 39 that pass through the enlarged portion 37. The peripheral edges of said pulleys are made concaved and the two form a guide for the passage between them of the cable 19.

Secured against the inner side of each earn 11 between the winding drum 15 and the shaft 29 is a horizontal guide d0, a shallow groove all bein formed on the inner side of each guide to receive laterally projecting ribs 12 on the sides of a slide d3, said slide projecting above the top of the guides 40 as clearly shown in Figs. 1 and 3. Bolted to the slide i3 on the side opposite the drum 15 is a strong spider at to which isrigidly attached one end of a screw stem 15 adapted to move to and fro with the slide 13. The screw stein i5 is guided and directed in its movement by bearings 16 and d7 bolted to cross braces "i8 and 129 that extend across the frame 10 between the beams 11. The braces and are spaced apart suliiciently to receive abeveled gear wheel that is mounted on the screw stem i5 and is in threaded engagement therewith. The beveled gear 50 meshing with a beveled gear 51 on the inner end of shaft 29 heretofore described. ii hen the shaft 29 is rotated, the beveled. gear 50 revolved through its connection with gear 51 and being engaged with the threads of the screw :5. the latter is moved longitudinally in one direction or the othcn depending upon the direction in which the beveled gear 50 turned. the latter being prevented from moving axially on the screw stem by the bearings -l6 and 43. Over the belt-pulley and normally carried above the same and tne belt 2''? passing menses around said pulley is a friction pulley 52 rotatable on a short shaft 53 that projects horizontally from a coupling head 5% mounted on the upper end of a vertical rod rising from a pedal 56 normally held in its uppermost position by a suitable spring 57. Also turning on the short shaft 53 is a sprocket-wheel 58 rigidly connected to the friction pulley 52 and turning therewith. From the sprocket wheel a cha'a 59 extends downwardly toward the end of the frame 10 and passes about a sprocket wheel 60 keyed to shaft 29. Tire driving belts 23 and 27 are loose upon their pulleys and permit the belt pulleys 2i and 26 to rotate without driving the pulleys Q2 and 28 except when one or the other of said belts is tightened. For the purpose of tightening the belts there is provided two belt tighteners 61 and 62, each comprising a roller 63 carried on the upper end of a rod 6%, which rods are connected at their lower ends each to a treadle 65 below which is a spring 66 that holds the roller away from the belt but when pressure is applied to either of said treadles, the roller connected thereto is ressed downwardly upon the belt, tightening it sufficiently to cause the rotation of the pulley driven by the said belt.

when the belt tightener 62 is actuated to tighten the belt 27,-the shaft 29 is caused to turn in such direction that, through the bevel gearing 51 and 50 and the worm 45, the slide '-l3 is drawn away from the drum. Upon releasing the belt tightener 62 and pressing downwardly on the treadle 56. the friction pulley 52 engages the belt pulley 26 and is rotated thereby with the sprocket wheel 58 in the opposite direction. Through the sprocket gearings 58, 59 and 60, revese rotation is given to the bevel gearing 51 and 50, pushing the screw with the slide 43 toward the winding drum. The forward and backward movement thus imparted to the slide %3 causes rotation of the winding drum 15 in opposite directions in the manner now to be described.

Fixed against the outer face of each spur gear 18 is a ratchet wheel or disk 67 here shown as being integral with the spur gear but of less diameter. Surrounding the ratchet disk and spaced therefrom is a circular rib 68 also integral with the spur gear 18 and concentric with the ratchet disk. Fitted over the rib 68 is a. cap-like winding pulley 69 conuirisiug a circular end disk with a short cylindrical 70 projecting from one side that its over the rib 68 and turns freely thereon. Pivoted in the pulley 69 to lugs on the inner side of the flange '70 are a plurality of pawls 71, four being shown.

ll laintained between the ratchet. l; 67, and the circular end plate 73 of the pulley 69 is adisk '24 from the peripheral edge of which project fingers 75, the number of fingers equaling the number of pawls and each adapted to engage a pawl or a lateral projection 76 thereon for the purpose of raising said pawl from engagement with the ratchet teeth when said disk is rotated through a short angle. The disk 74 is concentric with the shaft 16 of the winding drum and is rocked thereon by any suitable means for raising the pawls from the ratchet teeth, the means shown in the drawings comprising a pair of levers 77 and 7", the two being pivoted together at one end by a pin 77 that projects from one side of the pivotal connection for a purpose to be described later. The lever 77 has its outer end pivoted to :1 lug on the side of the pulley 69 at 69, the other lever 77 is similarly pivoted to a pin 71 mounted on the disk 74: and extending through an arcuate slot 7 r in the side of the pulley. Fixed against rotation on the drum shaft 16, but slidable longitudinally on said shaft is a disk 7 8 formed with a peripheral groove to receive the pin 77, previously described. When the pawls 71 are in engagement with the ratchet teeth 67, the disk 761 is turned sufficiently far in one direction to disengage the fingers 7 5 on said disk from the pawls. This movement of the disk 7st is performed by the levers 77 and 77. When the pawls are in engagement with the ratchet teeth, these levers are angularly disposed to each Other as shown in Fig. 2 and the pivot pin 77 of said levers is at its greatest distance from the pulley 69, the disk 7 8 will also be in its outer position. When the pawls are to be disengaged from the ratchet teeth, the disk 78 is moved inwardly on the shaft 16, said movementcarrying the pivot pin 77* in the same direction and straightening the levers 77 and 7 7. This straightening of the levers pushes the pin 74* in such direction as to rock the disk 74 and its fingers sufficiently to pass below the pawls 71 or the projection 7 6 thereon and lift the pawls om engagement with the ratchet teeth.

The disk 78 is supported loosely around the shaft 16 by two short rods 78 slidable endwise in the bearing 17 of the shaft 16, the ends of the rods 78 projecting beyond the bearing where they are engaged by the arms 79 fixed on a horizontal rock shaft 7 9 carried in bearings '79 bolted to the bearings 17. An arm 79 is also fixed on the shaft 79 and extends outwardly therefrom and is connect ed by a link with a lever arm 80* and a cross shaft 80 journaled in bearings fixed to the longitudinal beams 11. The shaft 80 immediately below the drum 15 is, it is to be understood, provided vwith a lever arm 80' in each end to operate the pawl disengaging device in each side of the machine. At one side of the machine, the shaft 80 is fitted with a pedal 80 by which the pawl disengaging mechanism is operated. H

Connected to the slide 13 on the side facing the drum 15 are two cables 81 each passing from said slide to the pulley 69 on the corresponding side of the drum which after passing around said pulley 69 one or more times is secured thereto. By this means whenever the pawls 71 are engaged with the ratchet disk 67 movement of the slide 13 away from the ,winding cylinder will cause the pulleys 69 to rotate in a direction that through the pawls and ratchet disks rotation will be imparted to the winding drum in a direction to wind the cable 19 thereon. Reverse movement of the slide 13 will release the cables 81 from tension and the pulleys 69 are turned in reverse direct-ion without affecting the winding drums by independent cables 82 attached to and wound about the pulleys in the reverse direction to the cables 81 and passing thence to 83 carried by uprights 8 1 and downwardly, weights being attached to the outer ends of the cables 82, these weights being sufficiently heavy to effect rotation of the pulleys 69 when tension on the cables 81 is released by the movement of the slide 43 toward the winding drum.

In using this machine the cable 19 is attached at one end to the winding drum 15 and by its other end either directly or through the-intervention of pulley blocks, not shown, to the object to be moved. An operator standing at one side of the machine then depresses the pedal 80 to push the disks 78 toward the pulleys 69 so as to straighten the levers 77 and 77 which rock the disks 7% sufficiently far to cause the fingers 75 projecting therefrom to pass under the pawls 71 and raise them out of engage ment with the ratchet disks 67. Pressure'is then put upon the treadle 65 to depress the belt tightener 61, which movement causes the belt 23 to be sufficiently tightened about the pulleys 22 and 22 to impart rotation to the shaft 21, it being of course understood that the shaft 25 has been rotating continuously through power imparted thereto by the prime mover. The pinions 2O engaging the spur gears 18 on the drum rotate the drum at a relatively rapid speed and cause the cable 19 to be wound thereon taking up all slack in the cable and if little power is re quired moving the object to which the cable is attached. If, however, greater p0wer be required than can be obtained from the gearing, the belt tightener 61 is released and the belt tightener 62 depressed to cause the belt 27 to be tightened about the pulleys 26 and 28. thereby driving the shaft 29 and rotating the bevel gear 50 on the screw stem 15. This movement pulls the stem and the slide 43 away from the drum 15, tensions the cables 81 and rotates the pulleys 69. The pawls 71 have been permitted to engage the teeth of the ratchet 67 by a reverse movementv of the pulleys 4G eer/see disk 7 causing the winding drum to rotate, and because of the slow but powerful draft imparted by the screw d5, the drum 15 will be turned slowly and with far greater power than previously exerted thereon and will readily cause the movement of objects which the gearing 18, 20 .was insufficient to move.

After one coil of cable has been wound upon the drum 15, an apron 86 having lugs projecting from the sides thereof at one end is placed about said cable, the lugs 87 being fitted in the notches S8 in the drum at the ends thereof between the spiral groove and the spur gears 18. This apron serves to keep the coils of the cable from engaging and rubbing against each other, which action is liable to produce excessive wear and cause destruction of the cable.

lVhat I claim is:

l. A machine for the purpose described comprising a drum, power means for directly rotating said drum at a given speed, and means for connecting said power means with the drum, a screw stem adapted to be moved longitudinally to and from said drum, means operated by said power means and independently of the drum operating means for moving said screw, a pulley rota-v table about the axis of the drum and adapted to be coupled thereto for turning the drum, flexible connections between said pulley and the screw for rotating the pulley, clutch devices for optionally connecting the pulley to the drum for rotating said drum at a slower speed than that imparted by the directly rotating means, and a coupling device for engaging the screw moving means with the power driving means.

2. A machine for the purpose described comprising a winding drum, a power driven shaft, a longitudinally movable screw mechanism including flexible connections and pulleys operated by said shaft for rotating the drum, a loose belt drive from the power shaft to the screw mechanism, and a tightener for said belt.

3. A machine for the purpose described comprising winding drum, a power driven shaft, a longitudinally movable screw mechanism including flexible connections and pulleys operated by said shaft for rotating the drum, a loose belt drive from the power shaft to the screw mechanism, a tightener for said belt, reverse driving means for the screw mechanism, and means for coupling said reverse means to the power shaft.

A machine for the purpose described, comprising a winding drum, a shaft on which said drum is fixed, pulleys at one or both ends of said drum and loose on the shaft, a longitudinally movable screw mechanism, a cable encircling each pulley and connected hereto at one end, the opposite ends of said cables being connected to the screw mechanism for rotating said pulley,

clutch means between said drum and pulleys, a power shaft, and means for connecting said power shaft with the screw mechanism for operating the latter.

5. A machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, a pulley at one or both ends of said drum and loose on the shaf a longitudinally movable screw mechanism, a cable encircling each pulley and connected thereto at one end, its opposite end being connected to the-screw mechanism for rotating said pulley in one direction, a second cable connected at one end to and wound al'iout each pulley in reverse direction and weighted at its opposite end for reversing the rotation of the pulleys, clutch means between said drum and pulleys for causing the latter to turn the drum in one direction, a power shaft, and means for connecting said power shaft with the screw mechanism.

6. A machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, a pulley at one or both ends of said drum and loose on the shaft, a longitudinally movable screw mechanism, a cable encircling each pulley and connected thereto at one end, its opposite end being connected to the screw mechanism for rotating said pulley in one direction, a second cable connected at one end to and wound about each pulley in reverse direction and weighted at its opposite end for reversing the rotation of the pulleys, clutch means between said drum and pulleys to cause said pulleys to rotate the drum in one direction, a power shaft, means for connecting said power shaft with the screw mechanism for moving said mechanism in one direction, and reversing means for the screw mechanism adapted to be engaged with the power shaft.

7. A machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, a pulley at each end of said drum and loose on the shaft, a longitudinally movable screw mechanism, a cable encircling each pulley and connected thereto at one end, its opposite ends being connected to the screw mechanism for rotating said pulley in one direction, separate cables connected each at one end to and wound about said pulleys in reverse direction and weighted at their opposite ends for reversing said pulleys, clutch means between the drum and the pulleys to cause said pulleys to rotate the drum in one direction, a power shaft, a loose belt drive from the power shaft to the screw mechanism, a re verse belt drive connected to the screw mechanism, a tightner for belt drive for coupling the power shaft to the screw mechanism and means for connecting the reverse drive to the power shaft.

8. A machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, a pulley at each end of said drum and loose on the shaft, a clutch means on each pulley and the drum for rotating the drum in one direction, pulley driving mechanism including a longitudinally movable screw stem, a slide carried by said stem, and a gear wheel threaded on the stem for moving the same in a longitudinal direction, a cable encircling each pulley and connected thereto at one end, its opposite ends being connected to said slide for rotating said pulley when the slide moves away from the drum, separate cables connected each at one end to and Wound about said pulleys in reverse direction and weighted at their opposite ends for reversing the rotation of said pulleys when the first named cables are released from tension, a power shaft, gearing for revolving the gear wheel on the threaded stem, a loose belt drive from the power shaft to said gearing, a reverse belt drive also connected to said gear ing, a tightener for the loose belt drive for coupling the power shaft to the caring, and means connecting the reverse crive to the power shaft.

9. A machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, means for positively rotating said drum, a pulley at one end of said drum loosely mounted on said shaft, ratchet mechanism between said drum and said pulley for optionally connecting said pulley with an element of the means for positively rotating the drum for driving said orum in one direction when the pulley rotated, means for connecting and disconnecting said ratchet mechanism, a cable wound around the pulley and fixed at one end thereto, means connected to the opposite end of the cable for positively rotating the pulley in one direction, and a weighted cable wound about said pulley for rotating the same in the opposite direction when the ratchet. mechanism is disconnected.

10. In a machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, means for positively driving the drum in one direction, a pulley at each end of said drum and rotatable on the shaft, a screw stein extending perpendicularly to the axis of the drum shaft, a nut rotatable on the screw stem and fixed against longitudinal movement, cables connected at one end to said stem and extending each around one of said pulleys and secured thereto at its opposite end, a power shaft, means for connecting said power shaft to the drum driving mechanism, means adapted to rotate said nut for moving the screw stem in one direction and through the cables rotating said pulleys, means for connecting said nut rotating means with the power shaft, and a clutch mechanism between each pulley and the winding drum for optionally engaging said pulleys with an element of the drum driving mechanism.

11. In a machine for the purpose described comprising a winding drum, a shaft on which said drum is fixed, means for positively driving the drum in one direction, a pulley at each end of said drum rotatable on the shaft, a screw stem extending perpendicularly to the axis of the drum shaft, a nut threaded on the screw stem for moving the same in a longitudinal direction, cables connected at one end to said stem and extending each around one of said pulleys and secured thereto at its opposite end, a power shaft, disengageable driving means between said power shaft and the drum, means for rotating said nut, disengageable driving means between said nut rotating means and the power shaft, coupling means for optionally connecting the pulleys each to an element of the drum driving means for rotating said drum through the longitudinal movement of the screw stem, and reverse driving means adapted to be coupled to said rotating means for retracting said screw stem.

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

SOLON PHILO BRADLEY.

Witnesses H. L. TINKER, E. M. VERHULST.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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