US1765580A

US1765580A - Tractor shoe

Info

Publication number: US1765580A
Application number: US245293A
Authority: US
Inventors: Jr John C Haggart
Original assignee: REPUBLIC TRUCK SALES CORP
Current assignee: REPUBLIC TRUCK SALES Corp
Priority date: 1928-01-09
Filing date: 1928-01-09
Publication date: 1930-06-24
Anticipated expiration: 1947-06-24

Description

June @136. J'. c. HAGGART, JR

TRACTOR SHOE Filed Jan 192s woentoq, I W

o l D Patented June 24, 1930 UNITED STATES PATENT OFFICE JOHN C. EAGGART, J'B OF ALMA, MICHIGAN, ASSIGNOR TO REPUBLIC TRUCK SALES CORPORATION, 01 ALMA, MICHIGAN, A CORPORATION OF MICHIGAN 'rnac'ron snon Application filed January 9, 1928. Serial No. 245,298.

The present invention pertainsto a novel tractor shoe designed particularly for use in the assembly of the endless or track laying tread members for tractors.

It is an object of the invention to provide a tractor shoe which will prevent the driving thrusts from being transmitted through metal-to-metal contacts to the driving shafts or framework and to absorb these thrusts as near as possible to the ground. In the accomplishment of this object, the shoe is constructed of upper and lower sections with a resilient pad inserted therebetween. The pad is connected independently to the two sections; in other words the securing members binding. the pad to one of the sections are not connected to the other section. In this manner there is provided a yielding or elastic connection between the lower ground-en aging section and the upper section of the s 0e, and this form of connection assistsin taking the driving thrusts. 4

The invention is fully disclosed by way of example in the following description and in the accompanying drawing, in which Figure 1 is a plan View of a number of shoes connected together; and

Fig. 2 is a longitudinal section of one of the shoes on the line 2-2 of Figure 1.

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

As already indicated, the shoe comprises an upper section 1 and a lower or ground-engagin section 2, between which is interposed a resi ient pad 3. At the transverse edges of the upper section are provided rows of bolts 4 which bind this section to the pad and have their lower ends seated in recesses 5 in the lower section 2. The lower ends of the bolts are fitted with nuts 6 received in the recesses for preventing slipping of the bolts. It will be seen that the nuts are received loosely in their respective recesses in order to avoid contact of the nut with the metal parts of the shoe, as a result of which there is no interference with the resilient action of the pad 3. The bolts 4 are alternated with recesses 7 formed through the upper section, and these recesses receive the heads 8 of bolts 9 which pass through the pad 8 and are anchored in the lower section 2. v

It will now be apparent that the intermediate pad 3 is connected alternately or inde pendently to the two sections, the binding members securing one of the sections to the pad being entirely free of the remaining section so that there is no rigid or metallic contact between the two sections of the shoe.

The upper section 1 is formed with a marginal rib 10 on its lower surface for engaging the edge of the inner pad and further holding the same against slipping. A rib 11 is formed transversely of the lower section 2, extending upwardly into the bottom of the pad for preventing too great a slip between the upper and lower sections and to avoid taxing the elasticity of the pad 3 and excessive shearing action at the bolts 4 and 9.

The lower member 2 is formed with a tread member 12 in the form of a V-shaped rib on its lower surface. The transverse edges are formed with knuckles 13 for insertion between and alignment with similar knuckles on the adjacent shoes, whereby the tractor chain may be assembled by pivot bolts 14 passed through such aligned knuckles.

Due to the elastic connection between the ground-engaging section 2 and the upper section 1, the driving thrusts are somewhat absorbed before reaching the upper section and other parts of the tractor, as contemplated in the object of the invention.

Although a specific embodiment of the in vention has been illustrated and described, it will be understood that various alterations in the details of construction may be made upper section, a substantially fiat lower secsection, and a transverse rib extending from one of said sections into the pad.

In testimony whereof I affix my signature.

JOHN G: HAGGART, J R.