|Publication number||US2787478 A|
|Publication date||Apr 2, 1957|
|Filing date||Apr 6, 1956|
|Priority date||Apr 6, 1956|
|Publication number||US 2787478 A, US 2787478A, US-A-2787478, US2787478 A, US2787478A|
|Original Assignee||Steven Schmidt|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (5), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
April 2, 1957 s. SCHMIDT 2,787,478
HANDLE CONTROL FOR TONGUE HITCH DROP PIN Filed April 6, 1956 INVENTOR. STEVE V SCHM/OT AND LE com oLf on TONGUE HITCH DROP PIN rStevens Schmidt; Wehster, Wis. 3 Application April 6, -1956; Sria1Nol576','585
1 ZClaims. "(Cl.'-280-"5I5) i This invzmtion, a hit'ch' I for connecting the -ton-gue'- "of aa agon or 6f various other implements or'vhicles to .t-heizdraw bar of a "tractor, may. be 'summarizedbriefly :=as follows:
'ssecured" to a tongue 'for swinging-movement 111 an up-and-down dire'ction Tis an 'arm' having at one end a depending pin engageable in an 'opening-ofthe draw ;bar. At one end iot the arm is -a'n eccentri'c 'washer 'adjusta'ble about "its 'axis -'into engagement -with the t tongue' to limit upward move'menbof said-end of the arm beyond a position 'in-which the pin 'will still be dis- ";posed in an openingof a ole-ids plate carried-by the utongueyso that the pin will' be' properly disposed for rsmovement into the draw bar opening. For lifting the draw ba'r 'thereis* provided an elongated handle ad- ".just'able as' to length,-eXtending upwardly at an angle to'lthe arm, and fixedly connected between thehandle x a'nd arm is a conne'cting'bar also adjustable as to length for the purpose of varying the anglarilty of the handle to the-arm.
iHitchin gand un'hit'ching'a t-ongued'implement 'is a time-cons'umingandsomewhatannoying task due'to-the tactthat one-seated on the'tractor must dismount, perform the hitchi ng or u'nhitc'hing operation, and then return to the seat. Accordingly, the main object of the invention' is'. to provide arr-improved "device, readily operable from the operators seat, for hitching and un- .hitching. the tongued implement.
Another. object is to provide adevice of theanature described which willhave a novel means for :adjustably limiting the upward movement of the arm on which the draw bar engaging drop pin is mounted, the adjustment being adapted to facilitate the interchange of drop pins so that even if a pin is substituted for another of shonter or longer lengths, adjustments can be readily made to still insure that the lower end of the pin does not move upwardly relative to the tongue any more than a predetermined distance.
Another object is to provide a device as stated wherein a particularly effective means is employed for operating the arm between its upper and lower positions, from the operators seat of the tractor, said means being readily adjustable to vary the angularity of the handle relative to the arm, according to the desires of the particular user and according to the particular size or make of the tractor.
Yet another object is to provide a device of the nature referred to which will be mountable upon a conventional tongue with a minimum amount of difficulty, will not adversely aifect the normal use of the tongued implement or of the tractor, will be simply designed so as to be capable of manufacture at low cost, and will be easily operable by the user.
Other objects will appear from the following description, the claims appended thereto, and from the annexed drawing, in which like reference characters designate like parts throughout the several views, and wherein:
2,787,478 "Patented Apr. 2, 1957 "ice Figure 1 is a side elevational view of thedevice 'c'onstituting the present invention, the full lines showing "the same" in position to hitch the tongueto the draw bar, a d "the 1 dotted lines showing "the samein a irele'asing Figure t :is an enlarged, detailsectional view en fli'ne 4--4 of Figure 1 V V A conventional tracto'r generally designated T -is"'-illustrated -as having a rearwardly"eXtending'draw 'bar10 falso of conventional design, having across-premherflZ formed with a--seriesof openings "13. Designated at 14 is' the' tongue of 'a w'agon or farm"'implement,"this "also-being, per '-'se,-conventional.
At the-forward end 'of the tongue-14; there aresecured, to the top-and bottom 'surfaces "thereofj'fiat, for- -wardly projecting' clevisplates 16 adapted 'to straddle or em-braee the cross-member 12- ondispositionofithe tongue :in position to be hitched :tothedractor.
A flat, elongated plate'-18 issecured by bolts"2(l to the 5 tongue; a' s'ub'st-a'ritial -distance-inwardlyfrom the forward-end thereof, and integrally formed :upon the opposite: side edge portions 'of' plate 1 8 are. upwardly projecting ears"22, -22 having transversely aligned openings receiving a pivot pin *24,"pa'ssi'ng* 'throughian :opening "formed in the "-rearendportion-"of 'an elongated arm. v26
eccentrically disposed opening receiving a -'boltf31 whereby the washer -is connected to the .armfor rotatable adjustment to selected positions.
"Detachably' connected-to the arm*26,at the front end thereof. 'is' a a pin 'rneans including a ,head 32. formed in- 'tegrally with adepending-tapered"drop pin 34 extend- 'a ble'dhrough 'a selected opening 1350f the draw bar.
-By reason ofTtheconstruction. so far"illustralted.and desc'r ib'ed,-'it 'willbe seenthat when the arm"26 is inits -"lower,' full line position of "Figure ,1, thefpini 34 will extend through the verticallyali'gned openings offthe fclev'is 'pla-te lfi, and through an" opening '13, of'the. draw bar. "-As a re's'ult,""=the-tongue 'isefiectively hitched to the tractor. In this position of the arm 26, the washer 30 is elevated out of engagement with the top surface of tongue 14.
However, when the arm 26 is elevated to the dotted line position of Figure l, the pin 34 moves upwardly out of the opening 13, with the lower extremity of the pin being disposed in the opening provided in the upper one of the plate 16. Thus, the pin does not move upwandly any more than is absolutely necessary to disengage the same from opening 13, and further, is maintained in proper position for downward movement of the arm 26 when the tongue is to be again hitched to the draw bar.
This arrangement facilitates a visual determination as to whether the pin is in proper position relative to the draw bar, for lowering into the opening 13.
A hinge 36 is secured to the arm 26 adjacent the pivotal connection of the arm to the tongue, and secured to one leaf of the hinge 36 is an elongated inner handle section 38, the forward end of which overlies the inner end of an elongated outer handle section 40 having at its front end a ring-like handle element 42 so disposed as to be conveniently grasped by one seated upon the operators seat of the tractor.
Connecting bolts 43 are extended through registering openings of sections 38, 40, and have been designated at 43. It will be understood, in this regard, that one or the other of the sections is provided with a longitudinal series of openings, so that the connecting bolts 43 can extend through selected openings of the series, thereby to adjust the overall length of the handle defined by the sections 38, 40. v t
, Bolted to the-underside of the forward handle section 40,,intermediate opposite ends thereof, is an elongated connecting bar section 44, bolted to a lower connecting bar section 46 which, at its lower end, is fixedly secured to the forward end portion of the'arm26. The sections 44, 46 can be adjusted longitudinally of one another, through the provision of a series of openings in one or both of these sections, so that the connecting bar defined by the sections 44, 46 can be adjusted as to length.
By reason of this arrangement, it will be seen that the handle is fixedly connected to the arm, and extends in acute-angular relationship to said arm. The angularity of the handle to the arm can be varied as desired, by selective shortening or lengthening of the handle and the associated connecting bar. This is desirable so that the handle element 42 will be so disposed as to be readily accessible to the operator seated upon the drivers seat of the tractor. Further, the drivers' seat in one tractor may be differently positioned as compared to a drivers seat in another tractor, again making adjustment of the handle position desirable.
In use, when it is desired to unhitch the [tongue from the draw bar, the handle element 42 is grasped and swung upwardly. This swings the handle to the dotted line position of Figure 1, thereby elevating arm 26 to disengage the pin 34 from opening 13.
The hitching of the implement to the tractor is accomplished in the same way, that is, after the tractor has been backed up to a proper position, the handle 42 is swung upwardly and the tractor is backed up slowly to dispose the opening 13 below the now elevated pin 34.
The handle 42 is now released, and arm 26 will gravitate to engage pin 34 in opening 13.
It will be understood that if desired, the pin 34 can be removed and a different pin, shorter or longer than the first pin, substituted therefor. When this is done, adjustment in [the position of the washer 30 is made, so that regardless of the length of the drop pin, it will still not swing upwardly beyond a position in which the lower extremity is disposed just above the plane of the top surface of the draw bar 10.
Any of various means can be employed to connect the device to the tongue, of course, and the plate 18 and cars 22 can, if desired, not be used. Instead, there may be provided a clamp for removably engaging the mount of the arm 26 with the tongue. Various other means can also be employed to advantage.
What is claimed is:
1. A hitch for connecting the tongue of an implement to a tractor draw bar having an opening, comprising: an arm adapted to extend longitudinally of and above the tongue; a drop pin on one end of the arm adapted to engage in said opening of the draw bar on downward swinging of the arm; means for mounting the arm upon the tongue for up-and-down swinging movement; handle means projecting upwardly from the arm to extend adjacent the seat of a tractor, for raising and lowering the arm; and means on the opposite end of the arm for engaging the tongue on upward swinging movement of the arm, to limit said upward swinging movement, comprising a washer eccentrically mounted upon said other end of the arm for rotation about an axis extending transversely of the arm, said washer, in selected positions to which it is rotatably adjusted, correspondingly adjusting the extent of upward swinging movement of the arm beyond a position in which the lower end of the drop pin is disposed substantially coplanar with the top surface of the tongue.
2. A hitch for connecting the tongue of an implement to a tractor draw bar having an opening, comprising: an arm adapted to extend longitudinally of and above the tongue; a drop pin on one end of the arm adapted to engage in said opening of the draw bar on downward swinging of the arm; means for mounting the arm upon the tongue for up-and-down swinging movement; and handle means projecting upwardly from the arm to extend adjacent the seat of a tractor, for raising and lowering the arm, said handle means comprising an elongated handle extending angularly to the arm and a connecting bar connected between the handle and arm, said handle being adjustable as to length, and having a hinge connection at one end to the arm, the connecting bar being adjustable as to length, thus to adjust the angularity of the handle relative to the arm responsive to an adjustment in the length of the connecting bar.
References Cited in the file of this patent UNITED STATES PATENTS
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1759355 *||Jun 8, 1929||May 20, 1930||Kampman Frederick H||Auto accelerator-regulating device|
|US2459245 *||Nov 1, 1946||Jan 18, 1949||Seward Basil E||Tractor hitch pin device|
|US2475761 *||Aug 3, 1946||Jul 12, 1949||Shook David W||Trailer hitch|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6868581 *||Jun 6, 2003||Mar 22, 2005||International Development Corp.||Garden cart handle|
|US7198283 *||Mar 5, 2004||Apr 3, 2007||Honda Motor Co., Ltd.||Cart handle assembly|
|US9156319 *||Jan 16, 2014||Oct 13, 2015||Tractor Supply Company||Quick change dual purpose draw bar|
|US20040244143 *||Jun 6, 2003||Dec 9, 2004||John Browder||Garden cart handle|
|US20050194754 *||Mar 5, 2004||Sep 8, 2005||Honda Motor Co., Ltd.||Cart handle assembly|
|International Classification||B60D1/00, B60D1/26|