US899180A - Log-loading machine. - Google Patents

Description

ZABHEETB-SHBET L 'Patented septh 22,1908.

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, Jv R McGIIPBRT Los LOADING mums. I AP'PLIOLTIOF PXLED DEU. 6. 1905.

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iPatelnted Sept. 22,'1908.

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principle` of the invention l sTATEs PATENT ormoni;-

' 'JOHN-R. McGIFFEnn oF DULUTH, MINNESOTA,

DULUTH,VMINXESOT, ACORPORATION OF MINNIESTA.

Loemoanrne MACHINE.

Specification of Letters Patent.

Patented sept. 22, 1968-.

- g appiicaan sied necemb'er s, 1 905. serrano'. 290,539.

To all whom 'it may concern:

4 Be it known that I', J oi'iN RMCGIFFERT, a citizen of the United States, resident of Duluth, county of St. Louis, and State of Minnesota, have invented a new and useful Iniprovement in Log-Loading Machines, of which the following isa s ecification, -the eilig heiiein explained and the best mode in which I have contemplated applying that principle, so as Y to" distinguish it from other inventions.

My invention relates to devices for loading 4 `and unloading cars, and'` particularly to that l' type of such devices designed to Ahandle logs.

The object is toprovid'e a. log loading niachine tliat will be readily transportable from place toplace,-andfyet will provide a stable structure when setup for actual operation.

Along with the above it embodies features of construction that, while not limiting it thereto, render it particularly desirable for A use on'narrow gage track, and in situations ularly important.

where self-propelling features are not. particbaid invention consistsof means hereinafter fully described and Vparticularly set'forth in the claims. The anuexeddrawings and the following description vset forth in detail certain nicchanism embodying the invention, such disclosed means constituting-but one of' various mechanicalforms in which the principle of the invention may be used.

In said annexed drawings -Figure 1 representsa side elevation of a log loading inachine. e'mbodvii'ig my invention, -such niachine being shown in connection with a car upon which it is adapte(l to be transported.

Fig. 2 is a front. end `elevation of the same; while Fig. 3 is a detail showing certain operative parts in a. diferent osition from that in which they appear-'in ig., 1.

In the side elevation of inv log loading ma# suchl machine is shown' as The car transported.V A is represented as being an ordinary'logging car such as' would bev apt to be employed inconjunction with my machine, and consists of two suitably' connected trucks Af A rovided with traiis verse holsters or bunks 2 which are designed type of not limited to use kindv of car but is readily adapted for use with A Even the particularloading machine s howrh'however, 1s,-

in connection with this;

any ordinary liat car; while without departing from the principle of my invention such machine may be constructed vto operate in- ASSIGNOR T0 CLYDE IRON WORKS, OFg' u miAi their lower ends extend inwardly so as to' rest upon `the ends of the ties of the track. It is of course, understood that if found desirable,4 and the character of t-he road bed will permit, these feet may be qdis osed to rest directly on the grofmd.- On tie other hand they-'may rest not .merely upon the end of the ties but upon the rails thenise]ves. I

The modifications in their structure 'adapting them to these several methods of usepare well known in the art and hence needq not be dwelt upon here. I wish to point out hoW ever, that in employing the or span, herein, it is not intended torefer to any particular so long as the free passage of'cars through the frame is permitted when the flatteris resting upon its own legs. Upon such ends are mounted suitable shoes I1, Fig, 2, whereterni, straddle, l

Q Aa0 character of supporting foot by a. niore secure vfoothold'is assured the legs, and the deck B i orted. The length. of the lees B is-such that when the loader is in its owered position deck B` will be supported high enough thus more solidly sup above the track to allow ample clearance beneath it fora logging car passing along the track, the distance between the legs being' likewise sullicicntly great t'o permit the free passage of such car. Upon the deck B is mounted the usual hoisting mechanism, including a derrickbooiii C, a boiler C and en gine, lnot shown, together withy the several drums C?, C3, `o )erated thereby.

The f'ranie o my loader, consisting-of the parts described above, I )referably make of vstructural iron. Thus 'die deck -frameis built up of continuous longitudinal I-beams b" connected at their ends by similar transverse beams b2; while the .legs B sist. of two adjacent I-.beanis biv suitably joined together and secured at their upper ends'to the ends of cross-beams. b2, their also con- 2 Y escaso vlower ends being bent inwardly to give4 the bow-shape already described. lSuch llooring as desired may be .provided on deck B, as

also braces to .laterally strengthen legs B',

. --the loader, being approximately that between the bunkson a logging car such as has been described,the distance between o )posite pairs at either endv being less than t Pivoted the rea-r crank 117.

, deck, Fig.. I.

land at other points in the structure where needed to'strenctlien the saine.

Securedin tie deck-frame are pairs of shoi-tparallel beams b4', one pair on each side of the frame atea/r end thereol", the distance between the saine, longitudinally of ie lengt i of one'l of' said bunks. upon siort shafts b5 jouriialedin, boxes mounted` u )on each such air of bea-ins b4 are two be cranks D D7, t 1e lower arms of which are of e ual length, while the upper arm of the forwar crank b is longer than that of Such upper arm of ci'ank 1,7 is joined by means of a shortl connecting rod bs tothe upper 'ari'n'v of the (,orresponding crank lii.- To the lower arms of each such set of bell cranks is pivotally attached a. shoe B2, which, as illustrated, is made up of two short Vsections of channei iron joined to-- gether by aplate on their bottoni edges and rovidcd on top with boxes in which are `iournaled the ins that serve to attach cranks e lf' to t ie shoes.

` It is evident from the foregoing construction that if the upper arm of bell crank b be swung forward, the shoe B'l juist described lwillbe de )i'essed, being at the same time niaiiit'aine paralleli with deck B; on the contraly a rearward swing of bell cra-nk b will raise such shoe until it recedes between the beams li4, its posit-ion at the end of such f movement being shown in Fig. 3.

' To operatebell-cranks 1) b? to elect the raising or depressionof shoes Baii endless cable c is provided, one on each side of the a fixed pulley, or roller'c at the rear end of the deck and around a drum C? atthe front end thereof, 'several Aturns being' taken around such-'drum and the cable ends being secured thereto so that 'a rotation of the d'ruin may eiectiiiovcnieiit' of the cable. li'iteriiicdivateiy of pulley cand drum O1 the cable is.'

secured to the upper arms of bell-cranks b as shown, Fig'. 1. Drums C* are mounted upon a shaft c2 operativelyv connected 'with the main drive shaltzcof the hoisting mechanism by means of suitable sprocket wheels c* and a cha-in c5. Operation of such drive mechanism is cllected when desired by throwing clutch c" on main drive-shaft c3 intogearwith adjacent sprocket c4. Since drivesliaft c? is capable of either forward or reverse motion it is evident that drums C*i can be rot-ated Ato draw the bell-cranks b b" either forward or backward and thus raise or `depressshoes B2. By properly choosing the Eachcable c passes aroundv i l i points of attachmentof l'cables c to bellcranks b, all four shoes B2 are adapted to be', simultaneously land similarly actuated.

After raising or depressing them as desired,

they are secured in their final positio'rby means of suitable ratchet-wheels on shaft cz and pawls adapted to engage such ratchet wheels, whereby the shaft may be held from turning in either direction, as will be readily understood.

its mode of operation.

is set upior operation' in loading logs, theA shoes B2 are in their upper position shown in Fig. 3, their bottoms being flush with the bottom -of deck or platform B. This permits the logging cars to pa'ss underneath the fra-me while supported upon the legs B. The object in haring the legs bowed is to secure suflicient width between opposite legs to allow a car to pass freely between theii while still utilizing the secure footing furnished by the. tics of the track. desired to remove the machine to a new location, a logging car A is run underthe plator holsters A2 are approximately directly beneath shoesB. The clutch eI is then thrown into gearwith sprocket wheel Ac* and drums C4 rot ated in the proper direction to depress the shoes B'l'until-they'contact with the bunks of the car. Further depression, it is obvious, *will raise the. loader lmdilyu'poii such bunks and thus support the saine upon the carIf'The'lower arinsof the bell-cranks are of such a length as to elevate, when positioned vertically, the

shoes of the loader legs high enough to clear the 'rails of the track. Yhen the cranks arethus positioned the. strain 'placed upon the` cable is not great, being merely that due to 'When it is forni and there positioned so that the bunks the longitudinal' swaying of the car.' To succcssfully withstand the side-racking, whichV would-result. whenthe machine is carried rapidly Vover an uneven track, the bell-cranks are given a wide cross section as clearly .shown in Fig. 2.

hoisting,mechanism is mounted can be sup-v )orted much lower. than in the types of logloaders heretofore devised, and still not interfere with v the passage of cars th erebeneath. By thus loweringr the center of gravity, a much more stable and therefore durable structure results. Y

Having thus described my improved log- .loading machine, it only remains to'indieate Then the machinel 1 tail, that vwhich Iparticularly point out and cars to distinct-ly claim is: I

1, In a loading device,'the combination of toperinit the passage of trucks therethrough, hoisting mechanism ixedly mounted in said said frame and adapted to be positively acatter upon a t-ruck'pos1-- tuated to 'raise the tioned therebeneath, such members being mechanism.

2. In alog-loading machine, the combination of a cai movable upon a track, a deck for carrying hoisting niechanism,' supporting means rigidly lattached t'o said deck and adapted to rest upon such track and permit attache .,o said deck and adapted to raise tle same upon said car, suc-h mea-ns com irising a depressible member, and means adlapted to depress the same.

3. In a log-loading machine, the combination ofa @immovable upon a track, 'a frame adapted to straddle such track and permit said carto pass tlierealong, hoisting mechanism afixedly mounted in said frame, and means adapted to raise said frame upon said car, suoli means comprising dcpressible members adapted to be actuated by said hoisting mechanism.

4. In a log-loadingniachine,ithe combinag tion of a deck for carrying hoisting mechanpositioned beneath it, such means comprising ism, supporting in eansrigidly attachedto saidv dec', said means being adapted to straddle a track and permit cars to pass bel tion of a truck moyable upon a track, a frame fra-ine, and depressible members mounted in I I l depressible members mounted on said frame, and adapted in one position to recede Within said fr ame and in another position to con- I tact with such t-ruck, .and means adapted to a frame formed with' a longitudinal opening actuate said members.A l 'y 6.- In a log-loading machine, the combinag for carrying hoisting mechanism, vsuch frame ass beneath said deck, and means i l i i A e t i means adapted to raise said frame upon said operatively connected vwith said hoisting truck, such means comprising a plurality of bell-cranks, shoes bornethereby, and means adapted to swing said bell-cranks whereb lsaid shoes are depressed to contact with suc thereby, and-nieans adapted to swing said bell cranks whereby said shoes are depressed to contact with such car.

8. In a log-loading machine, the combination of a deck for carrying hoisting mechan- 'isiny supporting means rigidly attached to said deck and adapted to straddle a track to permit cars to pass beneath said deck, and means adapted to raise said deck upon a car a plurality of bell-cranks, shoes borne thereby, and means adapted to swing said bellcran'ks in one direction, whereby said shoesV JOHN R. MCGIFFERT. v Attested by N.M. NELSON,

C. A. LUs'rEn.

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