US1565757A - Traction wheel - Google Patents

Description

Dec. l5 1925- A 1,565,757

L. E. SLAUSON f nucnon unser.

Filed Aug. 5, 1921 2 Sheets-Shut.k 1

Dec. l5, l925- L. E. SLAUSON TRAcTIoN waarin Filed Aug. 5, 1921 2 Sheets-Sheet 2 Patented Dec. 15, 1925.

UNITED STATES PATENT OFFICE.

TRAcTIoN WHEEL.

Application filed August 5, 1921. Serial No. 490,025.

To all whom t may concern.'

Be it known that I, Louis E. SLAUsoN, a citizen of the UnitedStates, residingat Rock Island, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Traction Wheels, of which the following is a specification.

This invention relates to traction wheels and one of the particular objects is to provide a structure in which the wheel is engaged with the shoes contacting with the ground in such a way .that no slipping or spinning of the wheel can take place. Another object of theinventi on is to simplify the construction by making the teeth by which the wheel engages the traction shoes part of the rim of the wheel.

Another object is to so construct the rim of the wheel that it will present a smooth surface vto the road when the track shoes have been removed and at the same time provide mounted engagement between the rim andl the shoes to prevent any slipping.

In the accompanying drawings I have illustrated my invention in the form in which I have found it to be satisfactory in actual use, and referring thereto Fig. 1 is a side elevation of my wheel with a portion of the shoes removed.

Fig. 2 is an edge elevation of Fig. 1.

Fig. 3 is a perspective view of a track shoe and a tooth.

Fig. 4 is a transverse sectional View of the wheel on the line 4 4 of Fig. 1.

The rim 1 of my-wheel is composed of a pair of spaced annuli, preferably comprising angle bars 2 and a series of teeth 3 interposed. between the annuli and held rigidly in place by the bolts or rivets 4. Each angle bar has one leg thereof disposed substantially radially of the wheel and the other leg thereof forms a tread to ride on the ground or onfthe traction shoes, as the case may be. One of these teeth is shown in the detail in Fig. 3 and it will be noted from the upper right hand portion of Fig. 1 that the curved faces of-these teeth are substantially flush with the outer periphery of the .angle iron 2 thus presenting a rim surface that has no projections to sink into the road when the track shoes are removed. Each of these teeth is provided with a pair upstandi-ngr @als 5 having the perforations G to receive pins 7 by which the shoes 8 are secured to the teeth. Each of the shoes in* cludes a pair of track portions 9 connected by a plurality of cross pieces 10 one of which is preferably near the middle` of the shoe and carries the standard 11 having the enlarged opening 12 to loosely receive the pin 7 when the standard 11 is located between the ears 5 of the particular tooth 3. Each end cross piece 10 is equipped with a post 13 adapted to lie between guides 15 carried by the opposite ends of each tooth Ywhereby the shoes are limited in their torsional swinging about the loose connection with the teeth.

The cross pieces 10 adjacent to the ends of the shoes also extend inwardly to provide the ribs 1G, the inner faces of which 17 are slightly curved to properly contact witll the complemental end faces 1S of the teeth 3. rllhe middle cross bar 10 also has an upstanding rib 19, the opposite faces of which are formed similar to the faces 17 for engagement with the walls 20 of a transverse recess 23 located about the middle of each tooth.

Projecting outwardly from each of the track sections 9 are a plurality of ground engaging bars 22 in this instance shown somewhat triangular in shape, adapted to sink into the ground and form the necessary driving engagement therewith.

From an examinationof Fig. l it will be seen that when the wheel is drivingin the direction indicated by the arrow the shoes are presented successively to the ground and form a practically continuous track on which the rim rolls evenly and the bars 22 bite into the ground and prevent the shoes from slipping relative thereto while the engagement between the surfaces 17 and 18 and 19 and 2O eifectually gears the wheel to the shoes. Fig. 1 shows the parts in the relative position assumed when the axle is directly above the middle of a shoe, the ground beingA indicated by the line A, B. At the upper left hand portion of the figure I have shown two (2) shoes in the position assumed when the axle is directly above the space between the adjacent ends of two adjacent shoes, the dotted line C, D representing the ground. As the wheel rolls forward on a shoe G in Fig. 1 the descending ,shoe H drops, by virtue of lopse conslippage o'tthe rim.

nection with the pin 7 and the action ot gravity, directly in fronto the rim with its lower end adjacent to the iront end ot the shoe G. The proportions of partsv are such that at the moment the wheel begins to put weight upontlie shoe II it assumes a substantially horizontal position with all of the bars engaging the ground, and the surface 18, which is marked K in Fia. l, contacting with the surface 17, marked Ii, so that the dr'ving engagement between the rim and the shoe is perfected without any As the wheel rolls forward on this slice H the engagement is "transferred successively 'trom the leading end iib to the intermediaterib to the other end rib and then to the leading end rib of thefncxt shoe.

rIhe recess 3 is provided in cach side of the tooth 3 to permit the escape of dirt which may be forced down between the ends of the cross pieces 10 and said sides.

It will be observed that pin T has a head at one end and an opening at-tlie opposite end through which colterpin or other tas-- teiiing device is passed. iy this construc- `tion itlis made possible to yquickly remove all the slices trom the wheel upon coming to a piece o'tipaveiiient or other surtace over which toothed wheels are prohibited. to travel and present a substantially sino-oth rim which will pass over the pavement without injuring it. @if inl case it desired to use soine of the kiiown'iornis ot detachable lugs the slices can be removed and the lugs attached directly to the face ofthe rim.

Another important iteature that should be noted is that by providing the particular connection between the shoes andthe teeth all the wear incident to the movement ot the slices comes agaiiist the teeth which are equally liaid and which canreadily be replaced by new castings when the wear 'has become excessive. The advantage oit this is eliminating the wear-on the rim sections, the replacement ot'which would be tantamount to building a new wheel.

I am aware that changes in the form and proportion and arrangement ot parts otmy invention may be made without departing from the spirit or sacrilicingthe advantages thereof and I therefore reserve theright to make all such changes asfairlyfall within the scope of the following claims:

I claim:

l. In a traction wheel, a rim including a pair ot sidel members, and intermediate tooth members, a. traction shoe loosely pivoted to each ot said tooth members and having driving surfaces yadapted to be successively engaged by driving surfaces on said teeth.

In a traction wheel, a rim including a pair of side members and a series of intermediate members securing them together,

said intermediate members havingl driving faces adiacent to the ends and presenting` outer surfaces substantially flushl with said side members, a series o't track slices loosely lpair of side members and a series of intermediate members secured thereto, each intermediate member presenting an outer face substantially flush with the side I members and having a pair ot bearing members and a pair ot guides, traction shoes each having a portion adapted to be located between bearing members, means toi.' loosely pivoting they traction shoes to said bearing Iinembei's, and means carried by said traction shoes cooperating with the guides on the intermediate members to keep the shoes in alignment with the rim.

Il. In a traction wheel, a rim including spaced side members and rigid intermediate connecting meinbers,'traction shoes loosely vpivoted to said intermediate members, posts onl sa id shoes and guides onsaid intermediate -meii-ibers cooperating with the posts t0 align the shoes in the direction ol travel.

In a traction wheel, the combination of a rim including side members spaced by rigid intermediateteeth, traction shoes haviii g means to engage with said teeth, means forlloosely pivoting the shoes to the teeth, posts adjacent to the ends et the shoes, and spaced guides'oii the teeth receiving said posts.

G. VVIn a traction wheel," the combination oi a rim including spaced side members connected by intermediate members having transversedriving surfaces, a series of traction slioesloosely pivoted to said members,

yaiidineans on said shoes-toetiect a driving engagement with said transverse driving surfaces on said members.

7. In a traction wheel, the combination ofi a rimiincliiding spaced'side members connected byintermediate teeth having transverse driving surfaces, and aseries of tractioii'shoes loosely pivoted to the teeth and comprising spaced trackiiiembers adapted to support said side members and intermedi- -ate ribs adapted to engage the teeth.

8. In a traction wheel, the combination of ya rim inclndingspaced rings connectedby intermediate teeth, said iteeth having pivot bearings adjacent. to the middle and-guides adjaceiitlto the ends, and a Aseries oit shoes each having astandardfpivoted to said bear- 'ings and 'posts cooperating with said guides.

9. In a traction wheel, the combination of a. rim including spaced rings connected by intermediate teeth, each tooth having end `bearingffaccs and intermediate bearing surfaces spaced by .a transverse recess, and :i

traction shoe loosely pivoted to each tooth and including spaced track members to Support Vthe rings, and transverse bars having teeth With bearing surfaces to cooperate 5 With the bearing surfaces on the rim tee-th. l0. In a traction Wheel, e rim comprising spaced angle bars, teeth rigidly connecting said angle bars and substantially Hush with the outer surface of said rim and a traction shoe loosely and removably pvoted to each of said teeth and provided with track portions for said angle bars and with means to engage said teeth to form a driving connection therebetween.

LOUIS E. SLAUSON.

Images