USRE17124E

USRE17124E - mayer

Info

Publication number: USRE17124E
Authority: US
Priority date: 1925-10-07
Publication date: 1928-11-06
Also published as: US1591857A

Description

Nov. s, 192s. Re. 17,124

W. MAYER v ITRAILER 'HOIST lAND COTJIILR Original Filed OG'C. 7, 1925 3 She 5-'Sheet l ATTORNEY Nav. 6, 192s. I Re. 17,124 A w. MAYER TRAILER H'oIs' Ann coUPLER Original Filed Oct. 7. 1925 5 Sheets-Sheet 2 INVENTOR M//LLJAM MA YER.

WITNESSES ATTORNEYS Nov. 6, 1928.

Y w. MAYER TRAILER HOIST -AND COUPLER Original Filed Oct. 7*. 1925 3 4Sheets-Sheetl INVENTOR I/l/)LLJAM MA Ys/a BY W96'.

ATTORNEYS Reissued Nov. 6, 1928.

UNITED .STA

` WILLLAM Merlin. or NEW "Yoan, n. y.

TRAILER Hors'r AND oo'nrmn originar No. mais, anni my s, ieee, semi "reissue *f1-led ecember 4,

` This invention relates to' -vtrailerhoists couplers 4and has for an obg'ect to providenn yun-proved yconstruction which may he readily manipulated lh-y the vdriverfof .a tractor for readily raising yand lowering the front end 4et the trailer and for causing Ya ready connec- 'tion and disconnection of lthe trailer with the tractor.

Another obieet of the invention is to provide 'an improved throw-out mechanism #for a trailer hoist and coupler Where/inthe driving or power mechanism will be immediately thrownout 4of operation. as soon las Jthe hoist has reached its extreme upper or 'lower Aposition.

A. stili further object, more. specifically, is to provide .a trailer lio-ist and coupler vwith means for turnin 'on the power for causing an actuation o te'various parts "and also means tor automatically restoring thecon- "trolling parts to their 'torn-1er position so as to automatically throw olf the pow-er. when the hoist and lcoupler have reached their destined position. l

Another object olf the invention is to provide an improved structure which will ette-ct a coupling 'between power tractors or rtrucks with trailers designed or `receiving heavy loads, the structure heilig suchalso -asto permit the raising 'and 'lowering Iof one end vof a trailer and 'its 'load during the coupling and uncoupling notion.

An additional object 'of 'the invention is to provide an improvement over my col-pending application, SerialNo. 44,518., the iinprovement consisting principally in `the mechanism for automatically throwing `out the hoisting coupling means.

ln 'the accompanying drawings- Figure l is aside 'vi-ew of part of a tract-or with a 'trailer associated therewith, vsaid tractor fand trailer 'disclosing` an embodiment vof the invention. A I y `Figure 2 is enlarged vertical Isectional view through the frontpart of vthe showing ,in Figure l.

Figure 3 is 'aview lsimilar to Figure "2 but showing the 'parts lin a raised position.

Figure 4 is i showing t'he vparte@shifted to la "lowering `the trailer;

position for Figure 5 is .a v"section-al view 'through Fig-uvre r, Figure 6 is an enlarged fragmentary `Vsectional uview 'illustrating ho-w' the Vpower 1s a vie-w similar to Figure 3 hut" 'mi 61,102, men :amener `7 w25.` Animation for 1925. Serial No. 152,707.

thrown off when thel hoist mechanism has .been lowered toits ext-renie dow-n position.

vFigur-.e7 is a fragmentary sectional `view through Figure Qon line 7&7. y

A In trailers and 'tractors now in common use, various means have been provided .for .connecting the trailer with the tractor and .also various means have been `provided for operai',- ing this connection to raise yand lower the front end of the trailer so as to properly effeet the connecting and disconnecting. These Avarious hoisting or raising means have been `connected in .-soine :manner with a power :element of the tractor and, consequently, various means have been provided for training 'on and oil the power. In the present invention, .an improved connecting structure hasheen provided for the :hoist ,and coupler 4and :also an improved :control devioeintemittently ais- ;sociated with the rother parts for throwing off the pow-er when :the mechanism is in either the upper-most or the lowerniost 'rpesition. The invention also includes a 'coupling y .structure which functions to :take care of ex ceedingly heavy loads. During the coupling `and umoouplinrg, the structure .acts to raise and lower .eiectivel-ly, not only the coupling mechanism, hut onelend of trailer with 'thuelomd Referring 'to the accompanying :drawings by numerals, l indicates .a traie-r and 2 a traetor. -The `tractor 2 is :provided with an engine of .any @desired supplied a transmission Bof any desired ltype, vsaid rtransmission heilig provided with arsh'aft 4 rotated whenever the eng-ine of 'the tractor T2 is run- L ning. This s'halitis .adapted `to rotate in :one `direction continually. A pinion 5 is splined shaft 4l and, therefore, :continually rotates therewith, said pinion hei-ng shifted back land ortl-i along shaft 4 hy the forked member 6 rigid-ly secu-ned. to Vthe rod 7. y v This rod fat one end is Jprovi-'ded ywith -a- `pin i8 extending through the slot 9 (see Figure 3) which is formed in fthe lower end of 1the ihand lever 10. 'The hand lever 10 is pivotal'ly mounted at l1 `so that fthe operator may Lgrasp the grip l2' and swing the lever hack Land lforth as desired for moving the pinion "5 to the position shown in Fi'gure, Figure '2 or Figure 4. Normally, the pinion-5 is lin the position shown in Fig- -u-re 'f2 which an inoperative or neutral pesition.

To cause the hoist to raise "the trailer', lever 11G Ais moved -to 'the' dotted position shown n Figure 2 manually. To canse ftriler vto be lowered or to cause the Ahoist mechanisinto move downwardly, lever 10 is moved to the yidly" secu`red'to the gears 14 ,and 15. An intermediate gear 1wheel or idler 16 continually meshes with gear- 14"and is positioned so that when the pinion is'shifted tothe position -shown in Figure 4, said'pinion willbe brought into mesh with the' gear wheel or vidler 16." lVhen the pinion 5 is in the position shown in `Figure 3, it is in mesh vwith the gear wheel 15. As the idler 16 is smaller than gear wheel14, this arrangement of gears will permit a multiplied force or leverage Aon the s haft 13 when the same acts to lower the coupling head or pin-'17. The shaft 13 carries a clutch member 18. which is splined thereon and'which is pressed against the clutch member 19 loosely mounted on shaft 13, said action being caused by the spring 20'. The

clutch member 19 is rigidly secured in any desired mannerto the sprocket wheel 21 car- `vrying the chain 22 which passes over the au sprocket wheel 23rigidly secured to the shaft 24 (Figure `5), which shaft'is rigidly secured to the worm 25, said worm in turn beingcony matically moving the parts to aineutral position when the head 17.` has reached either its tinuallyy in mesh.v with` the-worm lgear 26. When the clutch members 18 `and 19 are in engagement and shaft'13 is being rotated, the head 17 will be moved positively upwardly ordown'wardly 'Suitable means have'been provided as hereinafter Idescribed. for autouppermost or lowermost position. In Figures land 2, the parts are shown 1n their neutralV or inoperative lposition with shaft 13 stationary and the trailer restingon the support or turntable 27 mounted on the tractor 2. The trailer 1 has a turntable 28 carried by suitable members 29 secured to the trailer 1. The turntable 28 is provided with an opening orbore 30 for receiving the ref!` duced coupling portion 31 of head 17. This coupling portion is providedk with an annular groove 32 for receiving a locking member or catch 33 whenever the trailer is to be con- Y nected to the tractor. If it should be desired The driver of the tractor cannot convenyiently seeV and in fact, usually cannot see any to disconnect the trailer 1 from the tractor,

the catch 33 would be moved to an openposi tion manually and then lever lO'would `be moved over to the dotted Vposition shown inv Figure 2. This would-causethe pin-ion 5 to .move-with gear vwheel 15 and thereby rotate the shaft 13 in such a direction as to cause the part of the head 17 or associated mechanism p neutral position shown in Figure2.

and',"consequently, cannot readily determine vwhen to move the lever 10 lback to a neutral or inoperative position. Therefore, mechanism has been provided to automatically move theparts to a neutral position and, consequently, all the driver does is to move lever l0 over to the dotted position shown in Figure 2 and the parts will immediately begin to function to raise the front end of the trailer to its extreme upper position whereupon-the vpower will be thrown off automatically.. In

Figure 3 the parts are shown raised to almost a 'fullposition and. when raised 'to the dotted 'positionshown in Figure 3, the parts willautomatically function to open theclutch and shift pinion 5 to the position shown in Figure` 2. This takes place by reason of the shoulder v34 striking the lower end of the enlarged p0rtion 35 "of rod 36. This rod is raised to the dotted, position-shown in Figure 3 and in turn 1 will raisevor shift the bell cranklever 37. It

with a slot 44 through which extends the pin of bar 7. The bar 7v is provided with a bracket or projectionl 46 pivotally connected at 47 to the link 48 which in turn is pivotally connected at 49 to an extension 50 of the cam 51, which'V cam is pivotally mounted at When the cam 51 moves to the right as shown in Figure 3, it will strike the link 43 and raise the same to the dotted position. Vhen the rod 36. has been elevated to ythe. dotted position shown in Figure 3 it will swing lever 37 to thc dotted position shown in Figure 3 which will pullrod 7 until the pinion' is moved to its Thissame movement will cause the bracket46 topush link 48 until cam 51 isin the dotted position shown in Figure 3v whereuponlink 43 is raised so that part of the link carryingthe v notch 53 will be out of engagement with the end of the lever 54. It will be noted that as the link 43 `moves to the dotted position shown in Figure Y -1 2, it will swing, lever 54 and thereby disconnect the

clutch members

18 and 19, said disconnection taking placeslightly before pinion 5 moves to a neutral position. This action of shifting the pinion 5 automatically, does not require the attention of the driver. The parts are left in this position until it is .desired to again lower the head 17 whereupon the driver will manually move the lever 1Q to the position shown in Figure 4. This movement causes the pinion 5 to mesh with the gear Wheel 16 and will also shift the

links

43 and 48 until the rod 36 has been moved so that it will project a short distance above the turntable As the power begins to rotate the lill) Lil) gear wheel it will let rdown the head 17 and if necessary, pull the same downwardly. The gear `wheel 2G, shown i-n Figure 2, is provided with .a threaded'bore whereby the same is threaded onto the screwf 'which is rigidly secured to the head 17. As the head 17 moves downwardly, the lower surface of shoulder 34 will strike against the lug or project-ion 39 as indicated in Figure 6 and rock somewhat the bell crank lever 37 whereupon the link 43 is .shifted longitudinally toward the front and as it is moved forwardly, rod 7 will be .shifted so that the pinion 5 will be moved .lfrom the position shown in Figure 4 to that .shown in Figure As the rod 7 is shifted, link 48 will be pulled and cam 51 willL be again moved to a vertical position yas'show-n in dotted lines in Figure 6 whereupon `the link is moved out of engagement with the lever 54. lt will thus be seen that vto lower' 1 the 'trailer it will only be necessary for the driver to shift 'lever 1'() to the position shown in Figure 4 and then aliow the mechanism to automatically function. v

As above described, when it is desired to lower the trailer or the head 17, the `driver 'moves the lever 10 manually 'to the positionv shown in Figure 4 and the remaining mechanism will' function to automatically .shift the rts to the neutral `position whenthe head liiis been lowered 'to the desired extent. The clutchmembers 18` and 19 and lever 54 are provided as an auxiliary means for .throwing out the power when the head lhas reached 'its extreme upper position. As the trailer moves upwardly, the parts are inthe 'full line position shown in Figure 3. vAs the trailer nears its highest position, rod 36 willy 'begin to swing bell crank lever 37 and as it begins to swing this lever it will pull link 43 longitudinally and will swing lever 54 on its pivot 56 and said lever will automatically begin to move the clutch member 18 away from clutch member 19 so that the power is gradually disconnected lat the Sametime that the pinion 5 is moved to its neutral position. The parts are so proportioned 'that vsubstantial'ly at the time that the pinion 5 moves to its neutral position shown Figure 2, cam 51 will function to `disconnect link 43 from lever 54. The movement in the other direction by rod '7 will not cause the lever 54 to function until it strikes pin 56 as the upper part thereof will swing to one side asrthe upper part is connected to the lower part by a hinge 54. A suitable spring 57 acts -on the lever to cause the same to again assume its position in engagement with the notch 53 `when permitted.l As above'mentioned, the mechanismoperates to automatically throw pti' the power when head-17 reaches its destined position whether or not it is lan up position .or adown position.

position where the load is raised to the high- There are in fact, three positions, namely, an eXtreme `up est poi-nt as shown in dotted lines in Figure 3. The second posi-tion is shown in `Figure f6 where the load is Ileft elevated fand .the pin oif while in Figure -2 the turntable l28'funcl l tions to actufate the red 3G to cause the :power to be lthrow-n off.' In the intermediate or third position shown in Figure 1|6, the projectien or 'lug 'functions in connection with `the shoulder 34`fand through bell' crank lever 8" 37 and associated parts to canse the power to Ibe thrown oil. i

When the power is thrown olf :automati- 'caily,1the :clutch fimotions first or before the gears have beenentirely disengaged, whereby .said disengagement. is done easily. By adjusting the effective length of the link 48, the clutch may be caused to function .sooner lor later.

When the parts move to their down'or lowermost position, the pin 35 will be forced ydownwardlyand movebellfcrank lever 37 and link 43 to the dotted position lshown in Figure 6. This movement will .cause the link 43 @to 4pull toward the right in Figure 6 against the upper end ofthe vupper section of lever 5.4 and this will cause the upper section to swing around pin S56". This swinging movement will continue until the parts assume substantially the dotted position shown in Fi re 6 MU and the clutch is moved to a disengage posi` tion. Asthe parts assun'iesubstantiaily the dot-ted position shown in Figure 6, `member 52 will function to fully release the upper part of the lever 54 and permit the spring 2O 1F05 to again close the clutch 18 against .the action of spring 57 which is comparatively weak in respect .to spring 20.

' The throw-out mechanism has been shown with a particular form of coupling means but H0 it will be evident thatthe throw-out mechanism will properly function withl different forms of coupling'and raising and lowering means provided the parts are so formed as to cause the lever 37 and link 43 to function.

What I claim is:

1. A trailer hoist and coupler comprising interlocking coupling members, one of said members Iacting also Ias a hoisting member, means for raising and lowering said hoisting 121 member, means for y automatically ydisconnecting the means for raising and lowering said hoisting member when the hoisting member vhas reached either of its veXtreme positions, said means including a gear shift rod, 125 and a lbell cranklever voperatively 'associated with said hoisting member so that the bell crank lever will be moved in one direction when the hoisting member has reached its extreme upper position and moved in the op- 13u Vposite direction when said hoisting member has moved to its extreme lowest position.

2. The combination with a trailer hoist and coupler having a hoisting structure, means for raising and lowering saidhoisting structure and connecting mechanism for connecting said raising and lowering means with the engine of the tractor,'said connect-ing mechanism including a plurality of. gears, one of which is slidably mounted whereby it may bei-brought into mesh with other gears, of a vlowering means will move said bell crank lever in one direction when the raising and lowering'means have moved to its upper extreme position yand will movesaid bell crank lever in the opposite direction when it reaches 'l its extreme lower position.

3. The combination with a `heavy duty tractor and trailer, of a hoist and coupler comprising interlocking hoisting and coupling structures, driving means for raising and lowering said hoisting structure while there'is a heavy load on saidtiactor, means or'vconnecting said driving means with the vpowermechanisiii of the tractor, and a slit ving member for shifting said connect-ing means to cause said hoisting structure to be moved-upwardly and downwardly and connect and disconnect thehoist-ing and coupling structures.

4. The ycombination with a heavy duty ltractor and trailer, of a hoist and coupler comprising interlocking hoisting and coupling structures,A driving means ,for 'raising vand lowering'said hoisting structure while there is a heavyload thereon, means for connecting said driving means with the power mechanism of the tractor, a sliding member for shifting said connecting means to cause said hoisting structure to be moved upwardly i and downwardly and connect and disconnect the hoisting'and coupling structures, manually actuated means for moving said sliding member in sucha direction as to cause the engine to be connected with Said,V driving means, and automatically actuated -means for disconnecting said engine vfrom said driving means, said automatically actuated means functioning when said driving means reaches its highest position. y

5. A trailer hoist and coupler, comprising an apei'tured member connected with the trailer, a pin mounted on the tractor, means for raising and lowering said pin, said pin being adapted to engage said apertured member for raising. said trailer and alsofor actingfas coupling means for connecting the trailer with the tractor and means .forautomatically disconnecting the means for raising and lowering the pinwhen the pin has `reached either of its eXtreme positions, said means including a gear shifting rod, abell crank lever for shifting said rod, and means co-acting with said pin for shifting the bell crank lever as the pin nears either of its lextreme positions.

6. A power throw-out for trailer lioists and couplers which includes a hoisting pin and driving mechanism for raising and lowering the pin, said driving mechanism being provided with a series of gears, said throw- ,out mechanism including a pinion adapted `Vwith a hoistin pin co-acting with the lower part of the trailer and means oroperatively raising andr lowering Vsaid pin, a manually actuated lever for connecting the power ymechanism with the, pin forfact-uating the pinl and vautoiiialtically actuated Imeans for disconnecting said power mechanism, Asaid last mentioned means including a rod moved in one direction by said'pin when said pin has been elevated to its extreme upper position and moved in the oppositedirection by the bottom ofv said trailer whenl the pinv has been moved to its extreme lower position,

ka lever actuated by said rod, a link actuated by said lever, and means actuated by said link :for shift-ing thenieansnjconnecting the power from'said power meansfwith said pin. 8. In a trailer hoist and coupler, a hoisting pin, a source of power and a driving structure connecting said source of power with the pin forl operatively ,raising and lowering the pin, saidY pin being positioned to engage the bottom of a. trailer, a reciprocating memberfor throwing in and out said driving means, a link for automatically moving said shifting means,fa bell crank lever formoving said link longitudinallyand a rod rfor actuatingfsaid bell crank lever, said rod beingcarried by said pin, said rod being slidingly mounted in said pin and positioned to be raised by said pin when it is approaching its extreme upper position and is lowered by thebottom of said trailer when the pin is moved to its extreme lowest position.

9..:[nfal trailer hoist and coupler, a vertically movable pin provided with a screw, a gear having a threaded bore for receiving said screw, means for manually rotating said gear for moving said pin, and a reciprocatsoi.

ing rod automatically actuated by the pin and the load to be raised thereby for disconnecting said means when the pin has reached its extreme travel in either direction.

10. A trailer hoist and coupler, comprising a hoisting member adapted to engage the bottom oi' the trailer for hoisting the same, driving means for raising and lowering said hoisting member and means for connecting said driving means with the power mechanism of the tractor, a sliding rod for shitting said connecting means to cause the-hoisting member to be moved upwardly and downwardly and to disconnect the hoisting member from the power means, a link for reciprocating said rod, a manually,7 actuated lever for shifting said rod, a bell crank lever for shifting said link, and means for operatively connecting said bell crank lever vwith said hoisting member so that when the. hoisting member is moved to its lowermost position the trailer will cause the bellcrank lever to be shifted in one direction and when thev hoisting member is moved to its highest position said hoisting member will cause the bell crank lever to be shifted in the opposite direction.

11. A trailer hoist and coupler for trailers adapted to carry heavy loads, comprising a supporting member connected with the trailer, a hoisting member mounted on the tractor, means for raising and lowering said hoisting member, said means including a plurality of trainsof gears, a pinion adapted to be brought into mesh with either train of gears, and means for rotating the pinion, said cou ling member being adapted to engage sai supporting member for raising said trailer and also for acting asa coupling means for connect-ingv the trailer with the tractor, manually actuated means for shifting said pinion from one train of gearsto the other, and automatically actuated means for shifting the pinion from either train of gears to a neutral posit-ion, said last mentioned means including an actuating member carried by said couplmg member, said adapted to engage said supporting member for raising said trailer and also l'or acting as a coupling means for connecting the trailer with the tractor, a manually actuated member for connecting said raising and lowering means with the coupling member so as to cause the coupling member to function, and automatically actuated means for disconnecting said raising and lowering means from said coupling member, said automatically actuated means including a gear shifting structure and a clutch shifting structure.

13. A trailer hoist and coupler for trailers adapted to carry heavy loads provide-d with a raising and lowering pin acting as a coupling and means for actuating said pin, while there is a heavy load on said trailer, a manually actuated. memberfor causing said. means to be thrown into functioning position, automatically actuated means for causing said means to be moved to a position whereby they will not function, a clutch arranged in the means for raising and lowering said pin, and means `associated with said automatically acting means for causing said clutch to be opened when the pin is moved to its eXtreme position in one direction.

14. A heavy duty hoist and coupler for tractors and trailers, comprising power means for actuating said hoist and coupler for raising and lowering one end of the trailer and its load, a manually actuated member for causing said power means to be thrown into functioning position, automatically actuated means for causing said power means to be moved to a non-functioning position, and a connecting mechanism connecting the power means with the engine of the tractor.

WILLIAM MAYER.