US975475A - Truck connection. - Google Patents

Description

B. STEVENS.

TRUCK CONNECTION.

API'LIOATIOK FILED RAB. 30, 1910.

Patented N0i15, 1910.

51 n-uen Ew'e avelrs q 6mmup U TED STATES PATENTOFFICE.

EVIE STEVENS, OF PARK, WASHINGTON.

TRUCK CONNECTION.

To all whom it may concern;

' Be it known that I, Evin S'rnvnxs, a citizen of the United States of America, and a resident of thetown of Park, in the county of \Vhatcom and State. of \Vashington, have inrented certain new and useful Improvements in Truck Connections, of which the following is a specification.

The present invention pertains to improvements in center connections for logging trucks, and it resides in the novel features and combinations of parts hereinafter 'deserilied, and particularly pointed out'in the claims.

The primary aim of the invention is to provide a substantial locking connection between the holster-and hunk of a logging truck.- h i A further object is-to provide a central connection between the bolster and draft members with dpe provision for vertical ptay of the holste.r.

in the accompanying drawing, wherein similar reference numerals designate correspomliug parts throughout: Figure 1 is a plan of a logging truck of a common form with my invention applied thereto, p rtions of some of the parts being broken away. Fig. 2 is a vertical section on line f2---2 of Specification of Letters Patent.

Fig. l with tilt: bunk in an angular-position, and Fig. 3 1s a plan of the center portion of the truck in partial section with the hunk removed.

In the practice of my invention l' equip thetruck holster 1 with a center hearing on nlate 2 combined with a stub pivot 3 and side hearings on plate. 4. 4, which as shown. P

are extended upwardly at opposite sides of pivot 3 and prowded with inwardly proieeting angularextensions or legs 4'. '-l'.

()n the bunk 5 l provide a center b aring comprising a-hub ('3' adapted to receive pivot it freely and provided with a pm'ipheral flange 7. This flange is extended outwardly at opposite sid es 1. the hub to provide shoulders, as 7' which tit freely in the spaces or grooves between the lugs 4 and center hearing 2. r

In connection with huh ti 1 have shown an elongated hQad; which extends in quartering relation to the tongues 7' and is provided with hearing hos-Yes 8'. These bosses are suitabl beveled on their side edges to fit in the channel of bank 5 and are provided Patented Nov. 15, 1910.

Application filed March 50.1910. Serial No. 552,431.

with a ertures for clam nin bolts 10 which P l p extend through corresponding apertures in the web of the bunk.

Combined with the draft members or timhers 11, 11 of the truck are companion bearings 12, 12 for the side bearings 4, 4. These companion bearings constitute cross webs of respective double knee irons, which, as shown. are applied at opposite sides of the bolster 1 with their stem portions extending along the opposing faces of the draft members. Each knee iron is stiffened by a backing rib 12 and provided along the upper side edges of its stein portions with flanges 12" which are seated on respective draft members. i The stem portions of the knee irons are further provided with suitable apertures for bolts, as 13, which are applied to the draft members to secure the same in rigid connection with the knee irons.

The side hearings 4, as shown, are provided with downwardly extending stem portions 4" in which suitable apertures are provided for bolts, as l-t, which extend through bolster 1, while pivot 3 and head 8 of the hub are provided with central aperture for a king bolt, as 15. which may be employed if desired but is notessential.

The draft members 11 are secured in the usual manner to end bars of the truck frame it which is of the diamond arch bar 'type and carries a spring plank 17 upon' which the springs 18 for bolster 1 are supported.

in placing the bunk it. is presented crosswise of bolster 1, for clear passage of tlauge 7 between the lugs 4', and lowered to seat hub 6 on the center hearing .2 with pivot 3 projecting into the hub. The bunk is then turned to its usual position, thereby bringing the shoulders 7' ltltttltlt the lugs 4:, as shown in Figs. 1 and it. 'hen the bunk is listed Ul' tilted in operating the truck the shoulders 7' that hearing against the side bearings 4 or lugs l, as the. case may be, and thereby take the strain from pi'vot 3 and secure the bank from displzurement.

The connection is particularly 'etiective when loading or unloading the truck on a curved track where the truck bolster stands at an angle to the bunk amt the latter is sub jected to both listing and tilting strains.

Having thus described my invention, what I claim as new, and desire to secure by Letv device comprising interlocking means on said truck and bunk, the interlocking means of said truck overlapping the interlocking means of said bunk, whereby said bank is held against upward displacement While being free for rotation.

2. In combination with the truck and a rotatably supported bunk thereon, spaced locking elements on said truck, and spaced locking elements on said bunk normally engaging under said first named locking elements. v

3. In combination with the truck and a 'rotatably supported bunk thereon, a-plurality of locking elements on said truck, and

locking elements on said bunk arranged in I bunk, a hub on one thereof provided with outwardly projecting shoulders, a pivot on the other thereof journaled in said hub, and

relatively fixed lugs on opposite sides of said pilot engaging over the shoulders of said u 5. In combination with the truck and the bunk, a pivot on said truck, a hub on said bunk receiving said pivot, opposite outwardly projecting shoulders on said hub, and spaced lugs on said truck normally receiving the shoulders of said hub thereunder.

6. In combination with the truck and the bunk, a hub on said bunk provided with opposite outwardly projecting shoulders a center bearing on said truck provided with a pivot engaging in said hub,- and lugs on said center bearing engaging over the shoulders of said hub.

7. In a truck, draft members provided with spaced companion bearings, a. bolster extending between the bearings of said draft members, and a bunk pivotally supported on said bolster.

S. In a truck, draft members provided with spaced companion bearings, a bolster provided with side bearings opposed to the.

bearings of said draft members, means supporting said bolster for vertical movement, and a bunk on said bolster.

Signed at Park, Washington this 17" day of March 1910.

EVIE STEVENS. \Vitnesses v E. L. JOURDAN, C. M. SMITH.

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