Патент USA US2405299код для вставки
ug. 6, 1946. I a c o Dwm TRAILER Fi'led May 16, 1945 2 Sheets-Sheet 1 r 'v I l ' HTTORNEY' - Aug° 6, 1946. G. GODWIN - 2,405,299 TRAILER Filed May ~16, 1945 Sheets-Sheet 2 in! vewmg Patente'cl Aug. 6, 1946 2,405,21 a ' UHTED ~ STATES PATENT OFFICE 2,405,299 TRAILER Gordon Godwin, Montreal, Quebec, Canada, as signor to The Ontario Paper Company Limited, Thorold, Ontario, Canada Application May 16, 1945, Serial No. 594,010 In Canada February 19, 1945 4 Claims. (01. 214—85).' 1 2 My invention relates to improvements in trail means, which includes manual pulling of the cables, may be used if desired. As illustrated, the trailer is towed by a tractor I, provided with winches 2 and 3 which may be driven by a connection to the motor of the tractor. The trailer proper comprises an undercarriage, designated broadly as 4, provided with wheels 5 and a towing shaft 6 provided with a conventional draft coupling ‘L‘by which the trailer may be re ers of the type adapted to be towed by a prime mover and embodying means whereby the trailer may be tilted to facilitate skidding of logs and the like thereonto, together with cable means where by logs and the like may be both loaded there onto and unloaded therefrom with a minimum of labour. An object of the invention is to provide such a . logging trailer embodying a novel arrangement 10 movably connected to the tractor I. Mounted onthe undercarriage it of the trailer of cables and sheaves which permits a load on the is a tiltable load-carrying platform 8, tiltable on ground to be skidded directly onto the trailer by trunnions 9 to permit the platform to rock from pulling on the cable means, so that in one pull the position shown in Fig. 1, in which the rear the load is drawn onto the trailer without the necessity of making several hitches to the load 15 of the platform engages the ground to permit skidding of a load thereonto, to the horizontal and with substantially no labour involved other position shown in Fig. 3, for transporting the load. than that necessary to pull the cable carrying As shown, the platform is provided with releasable the load. latch means l0, engageable with the towing shaft It is a further object to devise such a trailer in which the cable means may be used to unload the 20 6 for holding the platform in the horizontal position. trailer without the necessity of rearranging the The loading mechanism is supported on an up cable means or making a series of hitches there right structure carried by the loading platform with. which, in the form shown, consists of a pair of With the above and other objects, which will hereinafter appear, in view the invention consists 25 substantially inverted U-shaped members H and 12,. which may be braced with members such as of the construction and arrangement all as here It and M. Secured to the apices of the mem inafte'r more particularly described and, illus bers II and I2, and extending longitudinally of trated with reference to the accompanying draw the trailer, is a monorail track 15 which is sub ings, in which: Fig. 1 is a side elevational view of a tractor 30 stantially co-extensive with the length of the platform. This monorail track carries a traveller hitched‘to a logging trailer constructed in accord it, of conventional construction, as shown in Fig. ance with my invention and showing the trailer 4, but provided with two cable sheaves ll’ and I8 in position for taking on a load; respectively, and while the traveller is free ‘to Fig. 2 is an end view of the unit as shown in . travel from oneend of the track to the other, it Fig. 1, taken from the rear; is prevented from coming off the track by stops Fig. 3 is a side elevational view corresponding I9 and 20 secured to either end of the track. to Fig. 1 and showing the trailer in the loaded Additional support for the track may be provided position; and in the form of uprights 2| at the front of the Fig. 4 is a fragmentary sectional view taken on the line 15-4; of Fig. 1, showing a track traveller 40 platform 8. The loading mechanism is completed by a cable which is part of the invention. 22 extending from the winch 2, over the sheave Like characters of reference designate corre l1, and terminating in a hook 23 for engaging sponding parts in the di?erent views. the load, together with a second cable 24 extend In a preferred embodiment of my invention, as illustrated in the drawings and referring there 45 ing from the winch 3 over a series of fairlead sheaves 25, 26, 21, 28 and 2%, mounted on the to, my trailer takes the form of a wheeled vehicle track [5 and/or the upright members H, from adapted to be hitched for towing to a track-laying which the cable 2A passes over the sheave E8 of tractor provided with cable traction means in the the track traveller and terminates in means such form of a pair of conventional power driven winches. It is to be understood, of course, that 50 as a hook 30 for engaging the load to be unloaded. In the drawings a load of logs 3| is shown for the trailer itself could be provided either with a purposes of illustration, provided, with a sling 32 track-laying undercarriage or a sleigh under by means of which the load may be readily con carriage, and that any suitable towing means may nected to the cables. be used, such as a conventional truck, or even A trailer, constructed according to my inven horses, and that any suitable cable traction 65 i ' 2,405,299 3 tion, operates as follows: When it is desired to pick up a load with the trailer, the trailer unit is and is intended to impose no limitation on the scope of the invention beyond those set forth in backed, by maneuvering the tractor l, until the the appended claims. platform 1} is in line with the load and the latch In What I claim as my invention is: is then released to permit the platform 8 to tilt 1. A loading and transporting vehicle compris until the rear of the platform contacts the ground ing an undercarriage, a load carrying platform adjacent to the load. The cable 22 is then paid mounted thereon and automatically tiltable on out from the winch 2 until its hook 23 may be an axis disposed transversely of the vehicle, a hooked to the sling 32 of the load. As the cable track mounted above the platform and extending is paid out, operation of the winch 3 will tighten 10 longitudinally of the vehicle, a traveller on said the cable 24 until the hook 30 blocks in the travel- ~ ‘track, a sheave carried by said traveller, cable ler l6. Continued pull by the winch 3 will move I traction means located adjacent one end of said the traveller Hi to a position near the rearend , platform, a cable extending from said traction of the track I5. The winch 2‘ is then operated ' means and passing over the sheave carried by the to pull the cable 22, whereupon the platform 8y traveller, and means at the free end of said cable is tilted until its rear end touches the‘ ground ‘ vfor engaging material to be loaded onto the and the load is skidded up the slope of the‘ plat form 8 by the combined lifting and dragging force of the cable passing over the sheave l1; since the sheave i1 is carried by the track traveller l3, which is free to move alongthe track l5, the line of pull on the load will be automatically main vehicle; 2. The combination, with a towing vehicle, of a trailer vehicle comprising an undercarriage, draft coupling means between the undercarriage andthe towing vehicle, a load carrying platform mounted on the undercarriage and automatically tained in a direction which will carry the load tiltable on an axis disposed transversely of the onto the platform with a minimum of power, and traction vehicle, a track mounted above the plat by the same token as soon as the centre of gravity 25 form, and extending longitudinally of the trailer of the load passes the axis of the trunnions 9, vehicle, a traveller on said track, a sheave carried the platform 8 will tilt into the horizontal posi by said travellencable traction means mounted on said towing vehicle, a cable extending from said traction means and passing over the sheave trailer may then be moved to the point where it 30 carried by the traveller, and means at the free is to be unloaded, and for unloading it is merely end of said cable for engaging material to be necessary to disconnect the hook 23 from the sling loaded onto the tractor vehicle. tion again and, the platform may be‘latched in such position with the’ latch in. The loaded 32 of the load and connect the hook .38, thereto, 3. In a combination as claimed in claim 2, a whereafter the latch I 0 is released and, on operat .second cable traction means mounted on said ing the winch 3 the cable 24 lifts the forward end 35 towing vehicle, a second cable extending there of the load, and by virtue of the track traveller from, a plurality of sheaves on said track for being free to move along the track as before, the carrying the second cable from the second trac load is drawn rearwardly, of the trailer until its tion means to the end of said track opposite there centre of gravity passes the axis of the trunnions from and back to said track traveller, a second 9, whereupon the platform 8 tilts and. the load is _ 40 sheave in said traveller over which said second skidded completely off _ the, platform 8. It will thus be obvious that I have invented an improved trailer with novel loading and unloading means whereby a relatively, awkward load may be loaded and unloaded by the simple operation of ~ connecting a cable to the load and operating the power winches of the unit used to tow the trailer, all of the mechanism being so organized that, for example, it is possible for one man to load, trans port, and unload a load as great as the combined power and trailer unit is capable of carrying. While I have shown one preferred embodiment of my invention in the drawings and description herewith, it is to. be understood that such dis closure is merely for the purposes of illustration cable passes, ‘and means at the free end of said second cable for engaging material to be unloaded from the vehicle. 4. In a trailer, an undercarriage, a load carry ing platform mounted thereon and automatically tiltable on an axis disposed transversely on the trailer, a plurality of members of substantial in verted U-shape each extending from’ one side of the platform to the other side of the platform, a track secured to the apices of the U-shaped members and extending longitudinally of the platform, a traveller on said track, and a sheave carried by the traveller. GORDON GODWIN.