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US1931449A - Lifting truck - Google Patents

Lifting truck Download PDF

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Publication number
US1931449A
US1931449A US405580A US40558029A US1931449A US 1931449 A US1931449 A US 1931449A US 405580 A US405580 A US 405580A US 40558029 A US40558029 A US 40558029A US 1931449 A US1931449 A US 1931449A
Authority
US
United States
Prior art keywords
handle
lifting
link
steering
elevating frame
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
US405580A
Other languages
English (en)
Inventor
Jr William Stuebing
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.)
Yale and Towne Manufacturing Co
Original Assignee
Yale and Towne Manufacturing Co
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 Yale and Towne Manufacturing Co filed Critical Yale and Towne Manufacturing Co
Priority to US405580A priority Critical patent/US1931449A/en
Priority to DE1930566877D priority patent/DE566877C/de
Application granted granted Critical
Publication of US1931449A publication Critical patent/US1931449A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
    • B62B3/06—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground
    • B62B3/0625—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground using rigid mechanical lifting mechanisms, e.g. levers, cams or gears
    • B62B3/0631—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground using rigid mechanical lifting mechanisms, e.g. levers, cams or gears with a parallelogram linkage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
    • B62B3/06—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground
    • B62B3/0625—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground using rigid mechanical lifting mechanisms, e.g. levers, cams or gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F15/00—Crowbars or levers

Definitions

  • the present invention relates to an improvement in lifting trucks.
  • One object thereof has been to provide mechanism whereby during lifting operation, the lifting effect is more uniformly and advantageously distributed over the entire swinging movement of the steering and lifting handle from vertical to horizontal position.
  • the desired result is achieved in part by providing more than one point of pivotal connection between such steering and lifting handle and the elevating frame to be lifted.
  • the angular relation between the handle and the connecting member varies during the initial lifting movement of the handle, for example, during approximately the first 45 degr es of movement thereof. Thereafter, said angular relation becomes fixed and the point. of pivotal attachment of the connecting member to the handle is changed to produce a more effective transmission of the lifting effort.
  • a further object of my invention has been to provide a lifting truck in which the extreme upper and lower positions of the handle are defined by suitable stops.
  • the extreme upper position is definitely fixed, the moving-parts will always come into the same relative operative positions, thus expediting connection of the elevating frame with the handle and permitting more certain and reliable engagement of the parts.
  • the lowermost position of the handle is defined by a stop, the free end of the handle is prevented from banging against the floor and is held in more convenient position to be manipulated by the operator.
  • Figure 1 is a top plan view of so much of a lifting truck construction as is necessary to illustrate my invention
  • FIG. 2 a side elevation thereof partly in sectionon the line 2-2 of Figure 1;
  • Figure 3 a side elevation showing the parts in the relative positions which they occupy when the lifting and steering handle is in upright position
  • the embodiment of my invention therein shown. includes a main frame 1, an elevating frame 2, links 3 pivoted to the main frame at 4 and to the elevating frame at 5, and suitable steering, lifting and connecting mechanism.
  • a steering wheel 6 is mounted in a steering head 7 carried by a part of a transverse beam 8, said steering head being provided with handle supporting lugs 9.
  • a lifting and steering handle 10 is pivotally mounted on said lugs at 11, the lower "end of said handle being provided with a stop 12 and a stop 13.
  • a detent 14 mounted on the lugs 9 is interposed in the path of stop 13 to limit the extreme downward movement of handle 10. r
  • a link 15 pivotally secured to the handle 10 at 16 is provided with an upper stopsurface 1'7 and a lower stop surface 18 adapted, when the lifting handleis in the position shown in Figure 3, to engage and rest upon an upwardly exposed supporting surface 19 of the steering head 7.
  • the stop surface 12 of the handle 10 will abut the upper stop surface 17 of the link 15, so that the weight of the position illustrated in Figure 2 and Figure 4,
  • connection may be established between the link 15 and the elevating frame 2 by any suitable means.
  • the elevating frame 2 is provided with an upright member 22 presenting a depending flange 23 of arcuate contour. This flange is adapted to be engaged by the hook portion 25. of a link 24 which is pivoted on the shaft 26 carried by the link 15. vWhen link 15 is in its stationary and relatively fixed position of Fig. 3, the hook portion 25 of .link- 24 may easily be moved into engagement with the flange 23 by foot pressure applied to a pedal 27 integral with the link.
  • latch means includes a laterally extending lug 28 mounted on frame 2 and positioned and adapt ed to be engaged by a latch 29 pivotally mounted on the transverse beam 3 of the main frame.
  • pedal extension 30 is formed at the outer end of latch 29 to permit said latch to be readily released from effective frame retaining position by footpressure of the operator.
  • the parts are preferably so related that as soon as the latch 29 engages lug 28, handle 10 will reach its lowermost position against stop 14 whereupon, by a slight upward movement'of said handle the link 24 is disengaged from flange 23, thus freeing the steering and lifting handle from engagement with the load and permittingit to be freely manipulated for such purposes as may then be desired.
  • An advantage of the stop in operation is that, as soon as the handle 10 reaches its lowermost position, indicated by the engagement of stops 13 and 14, the operator knows that the latch 29 will have engaged the extension lug 23 and that the loaded elevating frame is then looked in raised position until the latch is released.
  • a liftingtruck comprising in combination a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a link having one part thereof pivoted to the steering handle, and means for holding said part in fixed position relative to said handle when the latter is in upright position, another part of said connecting means being pivoted to said first-mentioned part and adapted to be moved into and out of engagement with the elevating frame.
  • a lifting truck comprising in combination a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame,
  • a lifting truck comprising in combination a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a link pivoted to the handle means whereby when the handle is in upright position said link will be held in fixed position to facilitate making the connection between the handle and the'elevating frame, and means whereby when the handle is actuatedto lift the elevating frame, the link will first move pivotally and then be held in fixed relation to the handle to provide in effect two points of connection therewith.
  • a lifting truck comprising in combination a main frame, a steering and lifting handle pivotally mounted thei eon, an elevating frame, means for connecting said handle and the elevating frame comprising a tension link pivoted to the handle, and a hook member pivoted to said link and provided with a foot treadle by which handle and link are connected into lifting relation to the elevating frame, and means operative when the handle is in vertical position to hold said linkin position to permit connection of said hook member with said elevating frame, said link being mounted to move pivotally relative to the handle during the first part of the lifting movement thereof, and means adapted to hold said link against such pivotal movement during vided with a foot treadle which the handle and link are movable into lifting relation to the elevating frame, and means operative when the handle is in verticalposition to hold said link in position to permit connection of said hook memher with said elevating framesaid link being free to swing downwardly relative to the handle during the first part of the lifting movement thereof to accommodate itself to the change in direction of the line draft of the connecting means.
  • Alifting truck comprising in combination a a main frame, a steering and lifting handle. pivotally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a two part link, one part having means of connection with the steering handle to permit pivotal movement relative thereto during-the first part of the liftingoperation and combined movement therewith during the latter part of the lifting operation whereby the effective point of connection between the handle.
  • main frame a steering and lifting handle pivotally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a link connected to the handle for pivotal movement relative thereto means limiting this movement to a part only of the lifting operation and a hook member pivoted to said link, and pedal-operatedmeans for connecting hook to the elevating frame when the elevating frame is in lowered po ition.
  • a lifting truck comprising in combination a main frame, a steering and lifting handle piv otally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a link, means whereby said link is connected to the handle for limited pivotal movement relative thereto, a hook m'ember pivoted to said and pedal operated means for connecting said hook member to the elevating frame.
  • a lifting truck comprising in combination a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame, means i for connecting said handle and the elevating frame comprising a link connected to the'handle' for pivotal movement relative thereto, means effective to limit said pivotal movement to apart only of the lifting operation, a stop arranged to engage said link when the handle is iii-upright position to hold said link in the line of draft of said connecting means and a hook member pivoted to said link and having a projecting pedal by which it can be moved into engagement with the elevating frame.
  • a lifting truck comprising in combination a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a link connected to the handle for pivotal movement relative thereto, means effective to limit said pivotal movement to a part.
  • a stop arranged to engage said link when the handle is in upright position to hold said link in the line of draft of said connecting means and a hook member pivoted to said link and arranged to be moved into engagement with the elevating frame when 1;
  • a lifting truck comprising in combination a main frame, a steering and lifting handle pivot- 1 ally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a linlnmeans whereby said link is connected to the handle for limited pivotal movement relative thereto during the first part of the lifting operation to accommodate itself to the line of draft, and means for connecting said link into fixed angular relation with the handle during the latter part of the lifting operation to form in effect a part of the handle providing a second point of connection between the connecting means and the handle.
  • a lifting truck the combination of an elevating frame, a steering and lifting handle, and a connector pivoted to said handle and positioned to operatively engage said frame and forming in effect a rearward extension of said handle, means whereby said connector is adapted for pivotal movement in the same vertical plane with the handle in different steering positions thereof and adapted during frame lifting movement of the handle to move endwise and initially in varying angular relation to the longitudinal axis of the handle, and means thereafter effective to move said connector in fixed angular relation with said handle.
  • a lifting truck the combination of an' elevating frame, a steering and lifting handle, and a multi-portion connector pivoted to said handle in position to operatively engage said frame and forming in effect an extensionof said handle, means mounting saidconnector for movement in the same vertical plane with the handle in all effective steering positions thereof,- and means whereby during frame raising operation of the handle, a portion of said connector is in varying angular relation to the longitudinal axis of the handle, and means operable to maintain another portion in fixed angular relation thereto.
  • a lifting truck the combination of I an elevating frame, a steering and lifting handle, and a connector pivoted to said handle in position to operatively engage said frame and forming in effect an extension of said handle, said a connector being mounted for movement in the same vertical plane with the handle in all effective steering positions thereof, and means interposed between said handle and said connector to limit the extent of angular movement of the latter relatively to the'longitudinal axis of the handle during frame raising operation thereof.
  • a lifting truck the combination of an elevating frame, a steering and lifting handle, means of connection between said elevating frame and handle whereby downward movement of the handle is operable to lift said elevating frame, said means comprising a member mounted for vertical movement with said handle during the lifting movement thereof, means connecting said member with the elevating frame whereby to move said member angularly relatively to the handle during lifting operation, and means operable during a portion of the lifting movement to fixedly secure said member to the handle for direct movement therewith.
  • a lifting truck comprising in combination, a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame, means for connecting said handle and the elevating frame comprising a two part link, means of connection'between one of said parts and the steering handle to permit pivotal movement relative to the handle during the first part of the lifting operation and combined movement therewith during the latter part of the lifting operation, whereby the effective point of connection between the handle and the connecting means changes during the lifting operation, and lifting means associated with said elevating frame normally separable from and adapted to be directly connected with said two part link when said steering handle is in different steering positions.
  • a lifting truck comprising in combination, a main frame, a steering and lifting handle pivotally mounted thereon, an elevating frame, a lift member associated with said elevating frame, means rotatable with the handle in its steering movement for connecting said handle and the elevating frame lift member. in any steering position, said means comprising a link connected to the handle for pivotal movement relatively thereto during a part only of the lifting operation and a hook member pivoted to said link.
  • a lifting truck comprising, in combination, a main frame having aswivelled steering head, an elevating frame mounted on the main frame and movable upwardly relatively thereto, a vertically swinging steering and lifting handle, means of connection between said handle and the elevating frame comprisinga lifting member associated with said elevating frame and extending laterally a substantial distance, a hook member adapted for connection directly with said lifting member, a link pivoted to the lifting handle and itself having pivotally mounted thereon said hook member, and adapted to rotate on said handle pivot during the first portion of the lifting movement, and movable with the handle during the remainder of the lifting movement, said link and hook being rotatable with the handle and engageable with said laterally extending member for lifting operation in different steering positions of the handle.
  • a lifting truck comprising, in combination, a main frame having a swivelled steering head, an elevating frame mounted on the main frame and movable upwardly relatively thereto, a vertically swinging steering handle, an arcuate hook member operatively associated with the elevating frame, a link pivoted to the steering handle, a hook member pivoted to said link and engageable with.
  • said arcuate hook member means whereby said link is adapted to pivot relatively to said handle during a part only of the lifting movement, said link and its hook member being rotatable with said handle in its steering movement, and engageable with said arcuate hook member for lifting operation in different steer- 1m ing positions of the handle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Body Structure For Vehicles (AREA)
US405580A 1929-11-08 1929-11-08 Lifting truck Expired - Lifetime US1931449A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US405580A US1931449A (en) 1929-11-08 1929-11-08 Lifting truck
DE1930566877D DE566877C (de) 1929-11-08 1930-11-08 Hubwagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US405580A US1931449A (en) 1929-11-08 1929-11-08 Lifting truck

Publications (1)

Publication Number Publication Date
US1931449A true US1931449A (en) 1933-10-17

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ID=23604268

Family Applications (1)

Application Number Title Priority Date Filing Date
US405580A Expired - Lifetime US1931449A (en) 1929-11-08 1929-11-08 Lifting truck

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US (1) US1931449A (de)
DE (1) DE566877C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894919A1 (fr) * 2005-12-21 2007-06-22 Bekaert Handling Snc Systeme d'articulation pour un timon pour chariot autoporteur et chariot le comportant et son procede de demontage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894919A1 (fr) * 2005-12-21 2007-06-22 Bekaert Handling Snc Systeme d'articulation pour un timon pour chariot autoporteur et chariot le comportant et son procede de demontage

Also Published As

Publication number Publication date
DE566877C (de) 1932-12-23

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