US2598517A - Portable winch - Google Patents

Description

May 27, 1952 E. A. DROTT PORTABLE WINCH sheets-sheet 1 Filed Sept. 19', 1946 @N Om m INVNTOR.

ATTORNEY E. A. DROTT PORTABLE WINCH IMay 27, 1952 3 Sheets-Sheet 2 Filed Sept. 19, 1946 INVENTOR.

ATTORNEY E. A. DROTT PORTABLE WINCH May 27, 1952 3 Sheets-*Sheet 5 Filed Sept. 19, 1946 INVENTOR. 54mm@ H. @uw

ATToRNriv Patented May 27, `1952 UN l TEDw STATES ATENE?" F FICE PORTABLE WIN GH EdwardA, Drott, Milwaukee, Wis, Application September 19, 1946, Serial No. 698,'977 CleillS- (Cl. 2125-145) The invention relates to a portable .winch and boom.

A further object of the inventionis to provide in combination with a tractor yhaving-.a movable push beam, of a winch adapted to be mounted on the projecting front end of said push beam and be movable therewith as an extension thereof.

A further object of the invention is to provide in combination with a tractor having a push beam provided with ground engaging shoes, of a hoist mounted on the push beam so as to be supported in part on said shoes. and thus relieve the tractor itself of any load that maybe handled by the hoist.

A further object of the .invention is. toV provide in combination with a tractor having a push beam, of a hoist pivotally mounted on said push beam and carried thereby and adapted to be shifted to and held in various angular Apositions relative to said push beam.

The invention further consists in the several features hereinafter described Vand more particularly dened by claims atthe conclusion hereof.

In the drawings:

Fig. 1 is a side elevation Viewl of apparatus embodying the invention;

Fig. 2 is a plan view of the apparatus;

Fig. 3 is a front elevation view of=thevappa ratus;

Fig. 4 is a view. similar to. Fig. 1.on a reduced scale showing the hoistinan elevated position.

Referring to the drawings, the winch and `boom constituting a portable. hoistvunit will first be described. This unitcomprises. abase frame 5 having spaced legs 6 connected by crossbars .or shafts 'I and 8, diagonal braces 9 connecting `the shaft 8 with the lower ends of the ,legsli. The lower endsof the legs are aperturedl at I0- to re-` ceive pins I I by which the legs may be connected to any suitable anchoring. support and permit,

if desired, tilting of said frame relativeto said support. Stabilizers. arey provided on each side of the frame. One of thesel stabilizers comprises an adjustable foot formed by a cylinder I2 pivotally mounted at its upper end I3v on the shaft 8 and having the cylindrical shank Hof anadjustable foot I 5 slidably mounted thereinvanrd adapted to be anchored in various height positions relative theretok by a pin I6" extending through alined apertures I1 lin said cylinder and through any one of the vertically spaced-apertures I8 in said shank I4.

TheV other stabilizer comprises ears or bracket members .I 9 secured to the legs=6 above the kpins I l and carrying pins which may be connected to the support either by the hydraulic cylinders or links hereinafter described or by other suitable connections.

A winch or hoist drum 2I is revolubly mounted centrally of the shaft 'I and carries a cable 22. The winch is turnedby a rotary hydraulic motor 23 whose shaft. carries a reversible Worm Wheel 24 which meshes with a worm Wheel 25 mounted on the shaft 23` carrying the drum V2 I The motor 23 is supplied with pressure fluid from a hydraulic pressure system of known construction including a pump and control valves operatively connected with the ilexible conduits 21 and 23 whereby the hoist drum may-be turned in either direction or may be held against movement. 'I'he hoist drum 2l with its cable 22 may be used as an ordinary winch, or it may be used as a boom hoist in which instance the cable 22, for a single reeve hoist, passes over a pulley 29 Whose block 30 may have a hook 3l engaged by an eyed hanger member 32 mounted on the outer end of 'a boom frame 33 whoselegs 34 are detachably connected by bolts 35 with the legs 6 of the frame 5, the frames 33 and 5 when so joined forming a boom frame. The cable 22 may have a lifting hook 36 on its free end or any other suitable device for connecting it to its load. Instead of using a single pulley block, the cable may be reeved in multiple to take a traveling block `so as to double or further increase the lifting capacity of thehoist.

The hoist above described may be used on a suitable support in any desirable location and connected by its piping with a suitable source of hydraulic pressure, or it may be mounted on a push beam 38 associated with the tractor as shown in full lines.

As shown in--Fig. 1, it will be noted that the stabilizer foot I5 .maybe adjusted to engage the ground, and thus the Winch or boom is supported` at three points.

The push beam 38 comprises arms llfconnected together at their rear ends by a cross beam 5i, forming a counterweight, and pivotally mounted intermediate theirends on-pivotal supports 52 carried by the rear portionv of the tractor frame.V

The arms extend forwardly toa position in front of the tractor, and theirforward ends are provided with ground engaging shoes 53 and-a mounting 54. for the pins I I ofthe hoist.

For raising` and lowering the push beam 38- a double acting vhydraulic cylinder -55 is` operatively interposed .between .each arm 50. and Vthetractor., and as hereshown has its .piston 56-pivotallycon-- n ected by. a pin. 5l :to a .bracket 58 on--thearm 5ft and the closed end of the cylinder pivotally connected by a pin 59 with a bracket structure 60 which is carried by the track frame and straddles the endless propelling tread 6| running over sprockets 52 and 53 carried by the track frame. As usual the sprockets 62 are driven through suitable transmission mechanism, not shown, by the engine mounted under the hood B3' of the tractor, and this engine also drives the pump (not shown) of the hydraulic system that furnishes the driving power for operating the cylinders 55 and the winch drive motor 23. The cylinders 55 are controlled through a suitable valve mechanism 64 which permits introduction of pressure uid to either end of each said cylinder while exhausting from the other end or the retention of fluid in both ends of the cylinder to hold the piston 56 in any desired set position. The winch motor is controlled through a valve mechanism 65 which controls its direction of rotation and its retention against rotation.

When the hoist is pivotally attached to the shoes 53 as previously described, the stabilizer leg i5 may be let down into the position shown in Fig. l and the other side of the hoist frame connected by the pins 2li with the pistons 66 of double acting hydraulic cylinders G1 pivotally carried by the push beam 38. In each instance the cylinder 5'! is pivotally connected by a pin 58 to a bracket 63 on its supporting arm 50. The cylinders 61 are controlled through a suitable valve mechanism 'it which permits introduction of pressure iiuid to either end of Said cylinder while exhausting from the other end cr the retention of iiuid in both ends of the cylinder to hold the piston 55 in any desired set position, and consequently hold the hoist frame .in any desired angular position relative to push beam 38 or the ground level.

When the hoist is mounted as shown in Fig. l to transmit the pressure of the load through the shoes 53 to the ground, the load may be lifted the height permitted by the boom frame 33. If, however, the lift required is higher than the length of the boom frame, the entire hoist together with the push beam 38 may be lifted by the cylinders 55, as shown in Fig. 4, and under these conditions the cylinders 5l may be operated to swing the hoist unit forwardly from its position shown in Fig. l. lt will `be noted that the cylinders 6l being pivoted at one end to the arms 50 and its e rod E55 being pivotally connected to the winch frame forms a link connection `between the winch frame and its support.

The winch alone may be used as for example when it is necessary to pull the tractor on which l;

it is located out of the mud or a bad hole. This can be done more successfully with a hydraulically controlled winch than a mechanically controlled winch, as it is just about impossible to find a speed in a mechanical controlled hoist or winch which coincides with the speed of the tractor tracks when pulling out of the mud. Either the tractor is too slow for the winch, or vice-versa, but with a hydraulically controlled winch, the speed can be synchronized, and it is not necessary to set a brake or put on a dog to hold the unit, while using either as a winch or as a hoist any time in reeving in or letting out the cable. When the operator lets go of his controls, the drum automatically stays in its position, eliminating the danger of dropping its load. The winch above described has all the advantages of an electric winch without the disadvantages of extra batteries. All that is necessary are two hydraulic lines running from the motor 23 to a pump 4 either driven by the tractor engine or a separate motor or prime mover.

I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the claims.

What I claim as my invention is:

1. The combination, with a tractor, having a vertically movable push beam pivotally supported on said tractor including arms projecting beyond the iront end of said tractor, of a winch frame mounted on the projecting ends of said arms, a cable drum mounted to rotate on said frame, a rotary hydraulic motor operatively connected to said drum to rotate the same, and an adjustable stabilizer foot connected to said frame above its mounting on said arms.

2. The combination with a tractor having a vertically movable push beam pivotally supported on said tractor including arms projecting beyond the front end of said tractor, of a winch frame pivotally mounted on the projecting ends of said arms, a cable drum mounted to rotate on said frame, a rotary hydraulic motor operatively connected to said drum to rotate the same, a lengthwise adjustable connection between said frame and arms for varying the inclination of said frame relative to said arms, and an adjustable ground engaging stabilizer connected to said frame above its mounting on said arms.

3. The combination with a tractor having a vertically movable push beam pivotally supported on said tractor including arms projecting beyond the iront end of said tractor and provided with ground engaging shoes, of a winch frame pivotally mounted on said shoes, a cable drum mounted to rotate on said frame, a rotary hydraulic motor operatively connected to said drum to rotate the same, and stabilizing means operatively connected to said winch frame above said shoes on opposite sides thereof for engagement with the ground.

4. The combination with a tractor having a vertically movable push beam pivotally supported on said tractor including arms projecting beyond the front end of said tractor and having ground engaging shoes at the outer ends thereof, of a winch frame pivotally mounted on said shoes, a cable drum mounted to rotate on said frame, a rotary hydraulic motor operatively connected to said drum to rotate the same, and hydraulic cylinders operatively connected to said frame above said shoes and to said arms for varying of the angle of said frame relative to the ground.

5. The combination with a tractor having a vertically movable push beam pivotally supported on said tractor including arms projecting from the front end of said tractor and provided with ground engaging shoes, of a winch frame pivotally mounted on said shoes, a cable drum mounted to rotate on said frame, means for rotating said drum, and means for holding said frame either at an acute angle relative tosaid arms or in a` position forming a lengthwise extension of said arms.

6. The combination with a tractorhaving a vertically movable push beam pivotally supported on said tractor including arms projecting from the front end oi said tractor and provided with ground engaging shoes, of a Winch frame pivotally mounted on said shoes, a load supporting means mounted on said winch frame, and a lockable extension link connection between said arms and said frame above the pivot of said frame on said shoes to hold said frame in a position forming a lengthwise extension of said arms.

7. The combination with a tractor having a push beam mounted thereon for vertical swinging movement and provided with arms projecting 5 from the iront end of the tractor and having ground engaging shoes, and means for raising and lowering said push beam, of a winch frame pivotally mounted on said shoes, load supporting means mounted on said Winch frame, and means for angularly adjusting said winch frame relative to said arms.

EDWARD A. DROTT.

REFERENCES CITED The following references are of record in the file of this patent:

i 6 UNITED STATES PATENTS Number Lathers May 24, 1949

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