US3307494A - Draw implement, particularly a ski lift device, for transportation of individuals - Google Patents

Draw implement, particularly a ski lift device, for transportation of individuals Download PDF

Info

Publication number
US3307494A
US3307494A US410162A US41016264A US3307494A US 3307494 A US3307494 A US 3307494A US 410162 A US410162 A US 410162A US 41016264 A US41016264 A US 41016264A US 3307494 A US3307494 A US 3307494A
Authority
US
United States
Prior art keywords
cable
cable drum
frame
shaft
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US410162A
Other languages
English (en)
Inventor
Samitz Erwin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorenfabrik Hatz GmbH and Co KG
Original Assignee
Motorenfabrik Hatz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorenfabrik Hatz GmbH and Co KG filed Critical Motorenfabrik Hatz GmbH and Co KG
Application granted granted Critical
Publication of US3307494A publication Critical patent/US3307494A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B11/00—Ski lift, sleigh lift or like trackless systems with guided towing cables only
    • B61B11/002—Ski lift, sleigh lift or like trackless systems with guided towing cables only able to be dismantled or removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B11/00—Ski lift, sleigh lift or like trackless systems with guided towing cables only
    • B61B11/004—Means connecting load and cable
    • B61B11/006—Means connecting load and cable the load being a cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/02—Hoists or accessories for hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Definitions

  • This invention relates to a draw or pulling implement, especially a ski lift device, for the transportation of individuals.
  • a draw or pulling implement especially a ski lift device
  • This invention finds its greatest utility in such areas of use.
  • the structure of the device is such that it can be transported, for instance, in the luggage compartment of a passenger car.
  • FIGURE 1 is a perspective view showing the general structure and manner of use of a device according to the invention.
  • FIGURE 2 is a sectional view of an exemplary lock for the cable drum and an exemplary automatic brake for controlling the rotational speed of the cable drum.
  • FIGURE 3 is a cross-sectional view of a portion of the main shaft shown in FIGURE 2.
  • FIGURE 4 is a fragmentary view of the locking device shown in FIGURE 2, but showing the locking pawl in unlocked or released position.
  • FIGURE 5 is a sectional view of an exemplary form of releasable coupling between the engine shaft and the pulley shaft
  • FIGURE 6 is a fragmentary view, partially schematic, of a portion of the grasping handle showing the operating levers for the flexible cables.
  • FIGURE 1 of the drawings on a frame-like pedestal. 1 an internal combustion engine 2 of a known kind is attached.
  • the frame-like pedestal 1 is equipped with runners 11 so as to permit easy sliding 3,307,494 Patented Mar. 7, 1967 movement over a snow surface.
  • the runners 11 are up-turned at each of their ends so as to permit easy movement of the device in either forward or reverse direction.
  • a horizontally disposed cable drum 3 to which is firmly connected a V-belt pulley 3a.
  • Pulley 3a is connected through intermediate idler pulley 4 to a further V-belt pulley 5a.
  • Idler pulley 4 preferably, but not necessarily, is adjustably mounted so as to provide for tightening or loosening of the V-belts.
  • Pulley 5a is rigily mounted on a shaft 5 which is coupled to the crank shaft (not shown in FIG. 1) of the internal combustion engine 2 by a disengageable coupling, which coupling can be any convenient form of simple clutch.
  • a handle assembly 6 for individuals is swivelly mounted at 1a to the frame-like pedestal.
  • a flexible tube 7 extends along the handle assembly 6 and incorporates flexible operating cables of a type well known in the art. These operating cables are connected at one end to operating handles on or in the vicinity of the grasping member of the handle assembly 6, and at their other end the operating cables are connected respectively to the gas lever of the internal combustion engine 2 and to the control member for the disengageable coupling on the shaft 5.
  • FIGS. 5 and 6 Such control arrangements are generally well known in the art, and it will be understood that the arrangement shown in the drawing is exemplary only.
  • One end of a hauling cable 8 is attached to the cable drum 3 in any convenient manner, and the other end is adapted to be anchored at a remote uphill point 9.
  • the uphill end of cable 8 can be attached directly to a tree or the like, or alternatively any convenient form of anchor can be attached to the uphill end of the cable.
  • a ratchet mechanism is provided to cooperate in a known manner with a ratchet wheel atached to the cable drum.
  • a ratchet mechanism is shown in FIGURE 2.
  • the cable drum is indicated generally at 3, and this drum is mounted for rotation with a shaft 13, which is in turn journalled in a journal 14 carried by the rotor support which is shown schematically at 15.
  • a rachet wheel 17 of a known type is mounted for rotation with cable drum 3 inside a protective housing 16.
  • a stationary pawl support member 21 is attached to journal 14 or to the rigid support member 15, and has a pawl member 18 mounted thereon for pivotal movement about an axis 19 into and out of engagement with the ratchet wheel 17.
  • a ratchet control shaft 10a passes through the center of rotary shaft 13 and has a projecting member 23 extending radially outwardly through an opening 22 in the shaft 13.
  • a cam member 24 is mounted on shaft 13 for longitudinal sliding movement relative to shaft 13 and for rotation therewith. Projecting member 23 engages a corresponding formation in cam member 24 so as to permit the cam member to be moved longitudinally by moving shaft 10a.
  • a cam follower in the form of a rotary wheel or similar member 20 extends from pawl member 18 to cooperate with the cam member 24.
  • cam member 24 is constantly rotating in the particular embodiment shown in FIGURE 2 the use of a rotary wheel or similar member reduces wear, but any convenient alternative arrangement can be used. As will be clear from FIGURES 2 and 4, by shifting shaft 10a to the left the cam 24 serves to disengage pawl member 18 from ratchet wheel 17, thus permitting the cable drum to rotate freely in either direction.
  • FIGURE 2 of the drawings An exemplary braking arrangement is shown in FIGURE 2 of the drawings.
  • pulley 3a is mounted for rotation with shaft 13.
  • a stationary brake shoe member 25 is connected to journal 14 or to support member 15 and carries a brake lining member 26.
  • a corresponding brake lining member 27 is mounted on a hub of pulley member 3a so as to rotate with pulley 3a and so as to be longitudinally movable relative to the pulley hub.
  • a cam member 29 is also mounted on the pulley hub to rotate therewith and to move longitudinally thereof.
  • a plurality of metal balls 28 are disposed inside pulley 3a as shown, and these metal balls bear against the cam surface of cam member 29. These metal balls rotate with pulley 3a and move outwardly under varying degrees of centrifugal force depending upon the rotational speed of the pulley. If the rotational speed of the pulley, and consequently of the cable drum, exceeds a predetermined rate, the balls 28 move outwardly under centrifugal force and urge earn member 29 and brake member 27 to the left as viewed in FIGURE 2, thus urging brake member 27 into frictional braking engagement with stationary brake lining member 26 to provide a braking action opposing the rotation of the cable drum 3.
  • a hood or cover 12 (shown in broken lines) is mounted over the entire assembly, and openings 12a, 12b and 120 are provided in the cover 12 for the cable, the shifting lever 10, and the towing handle 6.
  • the device can be equipped with an additional back run safety mechanism so as to provide additional operation-a1 safety for the transportation of passengers.
  • This additional safety mechanism may consist, for example, of a drag member equipped with claws or the like, the drag member being pivotally mounted at the rear end of the runners 11 and having the claws or the like inclined rearwardly from its lower surface so as to dig into the snow upon attempted rearward movement, thus stopping the vehicle.
  • the rearward inclination of the claw members would permit them to slide over the surface of the snow during forward movement and to automatically dig into the snow upon reverse movement.
  • Suitable latches would be provided to hold the drag member in upwardly folded position during downhill travel of the device.
  • the operation of the device will be apparent from the foregoing description.
  • the device is first placed in position along the desired draw path, and the cable 8 is unwound from the cable drum and anchored at 9 in any convenient manner.
  • the engine 2 is then started, the
  • drive connection to shaft is engaged, and the cable drum 3 is driven so as to pull the device and the individual user up the draw path by virtue of the winding of the cable 8 onto the cable drum 3.
  • the speed of movement can be regulated by the person operating the device by virtue of the fuel control shaft inside tubular member 7.
  • the drive coupling is disengaged so that the device will come to a stop. It will be held in this position by the ratchet and pawl locking mechanism.
  • the shifting lever a is then shifted to the left so as to disengage the ratchet and pawl lock, and the device will now move downhill while unwinding the cable 8.
  • the internal conibustion engine 2 may remain in operation without causing trouble, because the driving coupling has been disengaged so that only the cable drum 3 and the various pulleys will rotate during the downhill passage.
  • the centrifugally actuated brake will automatically impose a braking force to the rotation of the cable drum, thus slowing the device.
  • the device can be stopped by shifting the shaft 10a or by dropping the optional drag member which was described previously. The device is then ready for a further uphill trip. It should be noted that the device can be stopped at its downhill starting point by one of the skiers who previously was pulled uphill by the device since the downhill speed of movement of the device can be controlled so as to have it reach the starting point at a desired time.
  • FIGURE 5 is shown an exemplary releasable coupling between the crank shaft 31 of the engine 2 and the shaft 5 connected with the pulley 5a.
  • the shafts 5 and 31 are rotatably mounted in a stationary part 32.
  • a coupling member 34 is rotatably connected to the shaft 5, but axially movable with respect to said shaft.
  • the front ends of said members 31 and 34 are provided with engaging teeth 31a and 34a, whereby the engagement of said shafts can be secured by means of a spring 33 located between a collar on the member 34 and a collar on the shaft 5.
  • the flexible operating cables 7a and 7b within the flexible tube 7 are connected with operating levers 30a and 30b.
  • the levers are secured in each of their positions by means of known and therefore not shown ratchet means. If the operating lever 30a is moved in the direction A, the flexible operating cable 7a moves also in direction A and the coupling between said shafts 5 and 31 is established. If the operating lever 30a moves in the opposite direction, then the end 7a urges the member 34 to move to the right as viewed in FIG. 5 and the coupling between said shafts is released.
  • the operating cable 7b with lever 30b is coupled with the gas lever of the engine 2.
  • a ski-lift device comprising: a frame mounted on snow runners, said snow runners being curved at each of their ends so as to permit sliding movement of said runners on a snow surface in either forward or reverse direction; a cable drum rotatably mounted on said frame; a cable member having one of its ends connected to said cable drum so as to effect winding or unwinding of the cable as the drum rotates; motor means mounted on said frame; means releasably connecting said motor means to said cable drum to rotate said cable drum in one direction; handle means carried by said frame to provide a grasping surface for skiers to use in being transported uphill by the device; and control means permitting engagement or release of said connecting means so as to have said motor means rotate said cable drum or to permit said cable drum to rotate free of said motor means; whereby the free end of said cable can be anchored at an uphill point, and the device will pull skiers uphill as said motor means rotates said drum and winds said cable thereon, and the device will move downhill by unwinding said cable under force of gravity while said motor means is disconnected from
  • Apparatus as set forth in claim 1 further comprisingrele-asable lock means for preventing rotation of said cable drum in the unwinding direction, and means for selectively releasing said lock means.
  • Apparatus as set forth in claim 1 further comprising brake means for controlling the rotational speed of said cable drum during unwinding, and centrifugal governor means mounted for rotation with said cable drum for actuating said brake means at predetermined rotational speeds during unwinding rotation of the drum so as to control the downhill movement of the device.
US410162A 1963-11-11 1964-11-10 Draw implement, particularly a ski lift device, for transportation of individuals Expired - Lifetime US3307494A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM58877A DE1215738B (de) 1963-11-11 1963-11-11 Zuggeraet fuer Personenbefoerderung

Publications (1)

Publication Number Publication Date
US3307494A true US3307494A (en) 1967-03-07

Family

ID=7309366

Family Applications (1)

Application Number Title Priority Date Filing Date
US410162A Expired - Lifetime US3307494A (en) 1963-11-11 1964-11-10 Draw implement, particularly a ski lift device, for transportation of individuals

Country Status (3)

Country Link
US (1) US3307494A (de)
CH (1) CH431598A (de)
DE (1) DE1215738B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3577829A (en) * 1967-09-13 1971-05-04 James Hurn Method and apparatus for cutting components to length
US3692119A (en) * 1971-04-23 1972-09-19 Jasper J Tucker Winch carrying snow grooming vehicle supported by skids and powered by an anchored drawline
US4067545A (en) * 1974-05-08 1978-01-10 Joseph Reiter Device for the braking of towing cables in tow-type ski lifts
US4444375A (en) * 1979-09-19 1984-04-24 Horn Earl E Hunter's towing machine
US5415106A (en) * 1991-04-03 1995-05-16 Marc Groskreutz Skier rope towing apparatus
US20080083363A1 (en) * 2006-10-06 2008-04-10 Hart L Adam Human towing device and sports based on the device
US20100072443A1 (en) * 2008-07-25 2010-03-25 Lundrigan Brian E Mid-span winch with a reel-enclosing support frame

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739728A (en) * 1970-07-31 1973-06-19 J Thompson Portable ski tow and method of operating same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1091746A (en) * 1913-01-21 1914-03-31 Charles Grothe Attachment for motor-vehicles.
US2608935A (en) * 1947-12-19 1952-09-02 Moore Ski-tow apparatus
US2646005A (en) * 1949-02-07 1953-07-21 Harvey F Swenson Ski tow
US2776443A (en) * 1953-06-15 1957-01-08 Lauren A Howard Water skiing apparatus
US2865475A (en) * 1957-10-14 1958-12-23 Bell & Howell Co Speed responsive brake

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH119041A (de) * 1926-03-18 1927-04-16 Ernst Ruf Seilwinde mit Motorantrieb.
GB841442A (en) * 1958-02-18 1960-07-13 Rotary Hoes Ltd Power-driven cultivating machine or tractor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1091746A (en) * 1913-01-21 1914-03-31 Charles Grothe Attachment for motor-vehicles.
US2608935A (en) * 1947-12-19 1952-09-02 Moore Ski-tow apparatus
US2646005A (en) * 1949-02-07 1953-07-21 Harvey F Swenson Ski tow
US2776443A (en) * 1953-06-15 1957-01-08 Lauren A Howard Water skiing apparatus
US2865475A (en) * 1957-10-14 1958-12-23 Bell & Howell Co Speed responsive brake

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3577829A (en) * 1967-09-13 1971-05-04 James Hurn Method and apparatus for cutting components to length
US3692119A (en) * 1971-04-23 1972-09-19 Jasper J Tucker Winch carrying snow grooming vehicle supported by skids and powered by an anchored drawline
US4067545A (en) * 1974-05-08 1978-01-10 Joseph Reiter Device for the braking of towing cables in tow-type ski lifts
US4444375A (en) * 1979-09-19 1984-04-24 Horn Earl E Hunter's towing machine
US5415106A (en) * 1991-04-03 1995-05-16 Marc Groskreutz Skier rope towing apparatus
US20080083363A1 (en) * 2006-10-06 2008-04-10 Hart L Adam Human towing device and sports based on the device
US20100072443A1 (en) * 2008-07-25 2010-03-25 Lundrigan Brian E Mid-span winch with a reel-enclosing support frame
US8360399B2 (en) 2008-07-25 2013-01-29 Lundrigan Brian E Mid-span winch with a reel-enclosing support frame

Also Published As

Publication number Publication date
CH431598A (de) 1967-03-15
DE1215738B (de) 1966-05-05

Similar Documents

Publication Publication Date Title
US4678143A (en) Launcher for remotely piloted aircraft
US3180305A (en) Vehicle, control system and driving system therefor
US3307494A (en) Draw implement, particularly a ski lift device, for transportation of individuals
US4632205A (en) Combined generator and brake system for land vehicles
CA1227187A (en) Portable winch
US3108481A (en) Forward and reverse belt drive
US4333302A (en) Combined A.C./D.C. electric lawn mower
US5860635A (en) Winch having hydraulic speed control and planetary gear system
US4278143A (en) Parking brake release apparatus
SE424895B (sv) Lasanordning
US4215850A (en) Winch
US3405651A (en) Method and apparatus for towing skiers and the like
CN107709128A (zh) 用于将交通工具联接至牵引缆线的装置、设置有这样的装置的交通工具，和包括这样的装置借助牵引缆线的运输设施
US3797446A (en) Mobile power unit
US4444375A (en) Hunter's towing machine
US20080083363A1 (en) Human towing device and sports based on the device
US4058294A (en) Apparatus for hauling a flexible, textile or metal rope, cable or the like
GB2132577A (en) Launching aircraft
SE458441B (sv) Anordning vid en cykel foersedd med ett frihjul i drivhjulsnavet,som vid pedalroerelse i bromsriktningen urkopplar det i drivhjulsnavet anordnade frihjulet
SE447563B (sv) Portabel drivanordning med en motordriven drivrulle eller liknande for samverkan med ett band, en lina, en vajer, en ketting eller liknande
CN2257777Y (zh) 机动车防溜车装置
US1971033A (en) Aircraft with rotative sustaining blades
FR2475092A1 (fr) Racleur a dragline fonctionnant en mode manuel ou en mode automatique
KR200180904Y1 (ko) 동력 손수레
US2994497A (en) Static line retriever