US929168A - Hoisting-machine. - Google Patents

Description

E. S. ROBERTSON. HOISTING MAGHINE.

APPLICATION FILED NOV. 9, 1908.

Patented July 27, 1909.

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M1, akto'anurl E. S. ROBERTSON.

HOISTING MACHINE.

APPLIOATION FILED NOV. g, 1900.

929, 1 68. Patented July 27, 1909.

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Patented July 27, 1909.

HOISTING MACHINE.

E. S. ROBERTSON.

APPLICATION TILED NOV. 9, 1908.

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E. S. ROBERTSON.

HOISTING MACHINE.

APPLICATION PILED'NOV. 9, 1908.

Patented July 27, 1909;

4 SHEETS-SHEET 4.

S-rwentoz ifdc/yozerzm ELVADIS S. ROBERTS ON, OF MAY CITY, IOWA.

HOIS'IING-MACHINE Specification of Letters Patent.

Patented July 27, 1909.

Application filed November 9, 1908. Serial No. 461,674.

of Iowa, have invented certain new and use-- ful Improvements in Hoisting-l\fachines, of which the following 18 a specllicatlon.

The present Invention relates to unprovements in hoisting machines, and is more particularly designed for the pulling or piling of stumps and logs, although it may be utilized for dredging or excavating purposes or wherever a similar device may be required.

One of the primary objects of the invention is the provision of a hoisting mechanism which is connected to a traction engine so as to receive power therefrom and be drawn from place to place thereby.

The invention further contemplates a novel means for transmitting power to the various parts and controlling the same, and for steadying the machine when in use.

With these and other objects in view that will more fully appear as the description proceeds, the invention consists in certain constructions and arrangements of the parts that I shall hereinafter fully describe and claim.

For a full understanding of the invention and the merits thereof, and to acquire a knowledge of the details of construction, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view of an excavating machine embodying the invention, portions ofthe boom being broken away; Fig. 2 is a side elevation of a hoisting machine, portions being broken away, and shown in section; Fig. 3 is a top plan View, portions being removed; Fig. 4 is anend view of the machine; Fig. 5 is a detail view of the tension regulating rollers for theidrive belt; Fig. 6 is a detail top plan view of the turn-table and cables secured'thereto.

Corresponding and like parts are'referred to in the following description and indicated in all the views of the drawingsby'the same "reference characters.

with the usual drive wheel 2 from which power is taken. The rear end of the traction engine is formed with a platform 3, and hinged to the rear edge of this platform is a truck upon which the hoisting mechanism is mounted. The framework of this truck comprises a pair of spaced longitudinal beams 5 which are connected toward their rear ends by a transverse beam 6 and toward their forward ends by a transverse beam 7, the extremities of the said transverse beams prtjecting laterally beyond the longitudinal beams. The forward ends of the longitudinal beams 5 are loosely connected to a transverse shaft 8 which passes loosely through a pair of spaced bearings 9 which project rearwardly from the platform 3. It will also be observed that the extremities of the transverse shaft 8 are connected to the rear axle of the traction engine 1 by arms 10, and to the rear of the truck by the rods 11. In this manner, the pull of the traction engine is distributed evenly to all parts of the truck, and all undue strain is avoided.

Secured to the rear portion of the truck under the transverse beam 6, is a pair of spaced circular plates or rings 12 between which a turntable 13 is'loosely mount-ed so as to revolve about a vertical axis, anti-friction rollers being interposed between the parts so as to reduce the friction and cause the turntable to revolve easily. Projecting downwardly from the front and rear portions of this turntable are brackets 14, and journaled between these brackets so as to turn about a horizontal axis is a bearing member 15 upon which the rear axle 16 of the truck is mounted. This axle projects laterally upon both sides of the bearing, and is provided with the wheels 17 which are shown as formed with a broad rim, so as to provide a largebearing surface and prevent the wheels from sinking into the ground. Cables 18 extend rear- Wardly along opposite sides of the machine, from the extremitiesof the front axle of the traction engine, and these cables pass around pulleys or guide members 19 mounted upon the upper faces of the circular plates 12 and have .their ends secured to the turntable 13, so that'when the front axle of the traction engine is turned in one direction, the turntable will be revolved in the opposite direction. In thls manner, the machine can be readily guided from place to place, and is enabled to make comparatively short turns.

- Mounted upon the forward portion of the truck 4 is a frame 20, and journaled upon this frame are the three winding drums 21,

22 and 23, the winding drums 21 and 22 e-' ing provided at their opposite ends with the winch heads 24 and 25 respectively, while the Winding drum 23 is provided at one end with the winch head 26. The sluing drums 27 are also journaled upon this frame, and are mounted so that they can be run in either direction and be reversed, when desired. These various drums and winch heads are designed to be thrown into and out of operation by means of the usual clutch mechanism, and receive power from an operating wheel 28 upon one side of the frame. A belt 29 passes around the operating wheel 28 and also around the drive wheel 2 of the traction engine, and serves as a means for transmitting power from the traction engine to the drums. This belt 29 passes around upper and lower observed that the belt 29 passes around a pair of rollers 33 which are journaled between slides 34 mounted upon opposite sides of an inverted U-shaped frame 35 projecting upwardly from the rear axle of the traction engine and spanning one of the rear wheels of the traction engine. lhis frame is held rigidly against any swinging movement by means of the braces 36 which are inclined downwardly and rearwardly therefrom and secured to the platform of the traction engine. The slides 34 are connected at their upper ends to the adjusting screws 37 which extend upwardly through the cross bar at the top of the frame, and are rovided with the nuts 38,springs 39 beinginterposed between the nuts and the frame. These springs normally tend to draw the slides 34 upwardly, and thereby serve to automatica ly hold thedrive belt under the required tension. It will be entirely obvious, however, that by properly adjusting the nuts 38, the tension of the drive belt could be either increased or decreased as required.

An inverted U-shaped standard 40 projects upwardly from the rear end of the truck, and pivoted upon this standard is the lower end of the mast 41 which is mounted to turn about a vertical axis. The u )per extremity of this mast is pivoted in a ar 42 which is su ported by the downwardly diverging si e braces 43 and the downwardly and forwardly inclined braces 44, the .lower ends of the braces 43 resting'u on and being secured to the extremities of t ie transverse beam 6,

are driven in one direction, one end of thecable is taken up and the opposite end let out and the wheel 45- turned in a corresponding direction, while when the sluing drums are driven in the reverse direction, the above designated operation is reversed, and the wheel 45 turned in the opposite direction.

A boom 49 has one-end thereof pivotally.

connected to -the bottom of the mast 41, so as to swing up and down about a horizontal axis, the free end of the boom being provided with a cap 50having a head 51 swiveled thereon so as to turn freely about an axis corresponding to the axis of the boom. This head is shown as projecting laterally upon both sides of the ca one end of theliead having the leg 52 pivotally connected thereto, while theopposite end is providedwith a pulley or uide member 53 and is connected to the cab e54 bymeans ofwhich the boom is raised and lowered. This cable 54 passes around a pulle 55 at the top of the mast 41, downward y through an opening in the bottom of the mast, around a pulley 56 journaled between a pair of upright bars extending between the truck and the standard 40, and forwardly to the winding drum 21. It will thus be obviousthat by throwing the wind ing drum 21 intoand out of operation by means of the usual clutch mechanism, the boom may be either raised or lowered as desired. The leg 52 is only utilized when the device is employed for pulling stumps or similar purposes, and is designed to rest upon the groum upon one side of the stump or other member to be lifted.- A cable 58 is provided for swinging the lug upwardly into an inoperative osition when the device is not in use, and t is cablepasses over a guide member 59 at an intermediate point upon the boom 49, around a guidemember 60 at thev top of the mast, and has the extremity thereof connected to the winch head.26. A hoisting cable 61 passes around the pulle? 53 at the outer end of the boom, extends'a ong the top of the boom and passes around a pulley 62 at the lower portion of the mast, passes through an opening in the bottom of the mast, and around a pulley 63 journaled between the upright bars 57, and then forwardly to theiwinding drum 22. After the nected to the stump or other member to be lifted, the winding drum 22 is thrown into operation and the cable wound uponthe free end of this hoisting cable has been con drum until the stump has been lifted above the ground to the desired height. The third drum 23 is, provided with a cable 64 which extends rearwardly between a pair of guide members upon a block 65 which is slidably mounted within a transversely disposed guideway. 66 at the rear end of the truck. A screw 67 projects from one-side of the block 65 and is engaged at one side of the guideway 66. A chain 70 which passesaround the s rocket 58, also passes around a sprocket w heel 71 rigid with a shaft 72 journaled upon a bracket 73 projecting downwardly from the truck. A second sprocket wheel 74 is also rigid with this shaft 72 and engages a chain 75 which passes around a sprocket wheel 76 upon one end of the drum 23. With this construction, it will be ap arent that as the drum 23 is turned to take in and letout the cable 64, the block 65 will be moved from side to side, and the various parts are so designed that themovement of this block will just be sufiicient to cause an even windin of the cable upon the drum. The cable itself is used for drawing stumps from a distance to within reach of the boom, and the'block enables the cable to be turned at an angle to' the. axis of the machine. It may be mentioned at this point, that in the operation of the hoisting machine, the stump or other member which has just been drawn within reach of the boom by the cable 64,- can be lifted by the boom and swung to-one side into the desired position atthe same time that the cable 64 s unwound and drawn out for attachment to another stum I Provision is silso made for staying and bracing the sides of the machine, and for this )urposeiis lides :77 are mounted uponthe side races 43 of the mast. The lower ends of the slides 77 are provided with the shoes 78 and when the slides are moved downwardly, these shoes are designed to bear u on the ground so as to hold the truck an mast securely againstany lateral swaying motion. 'lhe upper end of each of the slides 77 is attached to a cable 79 which passes through an opening in the upper end of the corresponding brace 43, extends around a ulley or guide member 80 upon the innerace of the said brace, and has the extremity thereof; secured to the winch head24 u on the corresponding end of the drum 21. n a somewhat similar 'manner, cables 81' which are connected to the braces 43, extend upwardly along the inner faces of the said braces, pass around the pulleys or guide members 82 upon the braces and have their extremities connected to the winch heads 25 at the ends of the winding drum 22. ,,l gY.ith this construction, it wil be obvious that by leaving the winch heads 25 loose and operating the winch heads 24, the cables 79 will be taken in and the cables 81 let out and the slides 77 drawn upwardly into an inoperative osition. By the reverse of this operation, owever, the slides can be readily'moved downwardly until the shoes 78 contact with the surface of the ground and the slides are in an operative position.

In the operation of the device as a stump puller,-the traction engine is caused to draw the truckacross the field, and as the various stumps are encountered, they are engaged by the hoisting cable, as previously explained,

and drawn upwardly above the surface of the ground. Owing to the fact that the boom can be swung from side to side, a comparatively large. area upon each side of the truck can be effectively operated u on. It is'to be understood, however, that do not restrict in self to the use of the device as a stump pul ing ap )aratus, since by dispensing with the leg at t 1e outer end of the boom, and makin other slight alterations, the device could e used for excavating, dredging or for similar operations where a hoisting mechanism is essential;

It is to be understood that the drums may be run by chain belting, and for this purpose there could be a s rocket wheel attached to the shaft to whic the drive u heel 2 is attached, and theidleis 30 that are on the transverse shaft 8 could beremoved and a double sprocket wheel could be put in their place, and the chain could run from the sprocket wheel on 2, through the rollers 33, which would act as a chain tightener, onto one of the sprocket wheels that are loose on the transverse shaft 8, and there could be a sprocket wheel in place of the operating wheel 28, and the sprocket wheels that are on the transverse shaft 8 to be cast together.

Having thus described the invention, what I claim is:

1. The combination of a traction engine, a truck mounted to trail behind the traction engine, a hoisting mechanism on the truck, and means driven by the traction engine for operating the hoisting mechanism.

3. The combination of a traction engine provided with a drive wheel, a truck mounted to trail behind the traction engine, a hoisting mechanism upon the truck, an o crating wheel for the hoisting mechanism, a elt connecting the said-operating wheel to the drive wheel of the traction engine, a frame upon the traction engine, a slide mounted u on the frame, and guide members upon the 3 'de for engaging the belt to'regulate the tension therein.

4. The combination of a traction engine provided with a drive wheel, a truck mounted to trail behind the traction engine, a hoisting mechanism on the truck, an 0 erating wheel for the hoisting mechanism, a belt connecting the said operating wheel and the drive wheel of the traction en 'ne, a frame upon the traction en 'ne, aside mounted upon the frame, gui e members upon the slide for engaging the belt, and adjusting screws for moving the slide to regulate the tension in the belt. a

5; The combination of a tractiomengine provided with'a drive'wheel, a shaft applied to the traction engine, a truck hinged upon the shaftand mounted to trail behind the traction engine, a hoisting mechanism upon the truck, a drive belt for transmitting power from the drive wheel of the traction engine to the hoisting mechanism, and idlers en aging the drive belt and carried by thesha t to prevent any swinging movement of the truck from tightening the belt or producing slack therein.

6. The combination of a traction engine providedwith a drive wheel, a shaft applied to the traction engine, a truck hinged upon the shaft and mounted'to trail behind the traction engine, a hoisting mechanism upon the truck, a drive belt for transmitting power from the drive wheel of the traction engine to the hoisting mechanism, an idler j ournaled upon the shaft, 9. bar pivoted upon the shaft, and a second idler carried by the bar, the said idlers engaging the belt to prevent any swinging movement of the truck from tightening the same or producing slack therein.

7. The combination of a traction engine provided with a platform, a shaft supported etween its ends b the latform, a truck mounted to trail be ind t e traction engine and loosely connected tothe shaft between its ends, arms connecting the ends of the shaft to the traction engine, and rods connecting the ends of the shaft to the truck.

8. The combination of a traction engine formed with a movable axle for uiding the same, a truck mounted .to trail ehind the traction engine, a turntable u on the truck, wheels carried by the turnta le, and cables connecting the turntable to the movable axle of the traction engine.

9. The combination of a traction engine formed with a movable axle by means of which it can be guided, -a truck mounted to trail behind the traction engine, a turntable mounted upon the truck, a bearing carried b the turntable and mounted to swing about a horizontal axis, an axle mounted within the bearing, wheels upon the axle, and an operative connection between the turntable and the movable axle of the traction engine.

10. The combination of a truck, a mast mounted upon the truck, side braces for the mast, a boom upon the mast, means for controlling the boom, and slides upon the side braces for stead ing the truck. I p

11. The combination of a truck, a mast mounted upon the truck, braces for the'mast, a boom upon the mast, means for controlling the boom, slides mounted u on the braces for steadying the truck, and ca les for moving the slides into and out of operative position. '12. The combination of a truck, a hoisting mechanism mounted upon the truck and embodying a mast. -and side braces therefor,

slides upon the side braces for steadying the truck, cables for movin the slides, winding drums for controlling tie hoisting mechanism, and winch heads at the ends-of the windin drums for taking in and letting out the ca les of the slides.

v 13. The combination of a truck, a .mast

-mast pivoted upon the standard so as to swing about a vertical axisand having an -opening in the lower end thereof, Winding drums upon the truck, guide members upon the truck under the inverted U-shaped standard, a boom connected to the mast, a boomoontrollingcable, and a hoisting cable, the saidcables passing through the opening in the bottom of the mast and around. the guide .members under the standard and having their extremities connected to the winding drums.

15. The combination of a truck formed with longitudinal beams connected by transverse beams Which project laterally beyond the longitudinal beams, a mast mounted upon the truck, braces for the mast, the lower ends of the braces resting'upon the extremities of the transverse beams, a boom upon the mast, a boom-controlling cable, a hoisting cable extending. along the boom, and winding drums upon the truck for taking in and letting out the cables.

16. The combination of a traction engine,

a truck mounted to trail behind the traction engine, a turntable uponthe truck, wheels carried by the turntable, a mast mounted means driven by the traction engine for operupon the truck, braces for the mast, slides ating the winding drums. 10 mounted upon the braces and adapted to be In testimony whereof I affix my signature moved downwardly into engagement with in presence of two witnesses.

" the ground to steady the truck, a boom upon ELVADIS S. ROBERTSON. [1,. s]

the mast, a boom-controlling cable, a hoist- Witnesses: ing cable, winding drums upon the truck for A. E. BUCK,

taking in and letting out the said cables, and I H. E. RICHARDS.

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