US2026673A - Pulley attachment - Google Patents

Description

Jan. 7, 1936. 5 DE LAND 2,026,673

'MPULLEY ATTACHMENT Filed Aug. 15, 1934 2 Sheets-Sheet l Inventor 34,, r I E. .DLdnd fiwaaiizm Attomey 'Jan. 7, 1936. E. DE LAND PULLEY ATTACHMENT Filed Aug. 15, 1954 2 Sheets-Sheet 2 I 7 M m p w M W 4222/6 H rQ 0. H H 4 w m 2 I a... m M 7 W w w wv. H H H lm r 11 m m. m: m M a lm[\ Attorney J ZZZ/2 3 n -tenan'ces to the throttle Patented Jan. 7 1936 UNITED STATES PATENT OFFICE I r 2,026,673 'PULLEY ATTACHMENT Earl De Land, West Eaton, Y. Application August 15, 1934, Serial No. 739,993 3 Claims. (01. 74-4) 7 1 This invention relates to an improved power take-off" or supply pulley in the form of an attachment for a conventional transmission in well-known types of present-day automobiles.

Briefly stated, the improved pulley structure is characterized by a built-in speed governor constructed and arranged to automatically control the throttle valve of a carbureter so as to regulate the speed of rotation of the pulley.

The specific construction of parts and their mechanical relation and associationsuch as is calculated to insureeffective results will become more readily apparent from the following description and the accompanying drawings.

In the drawings: V Figure 1 is an elevational view of the complete attachment as operatively applied to a conventional automobile transmission and. showing the relationship of the attachment and its appurvalve of a carbureter.

Figure 2 is an enlarged end elevational view of the pulley shown in Figure 1 observing it in a direction from right to left.

Figure 3 is a vertical sectional view taken centrally and longitudinally through Figure 2 on the plane of the line 3-3, portions being in section as well as elevation.

Figure 4 is a transverse sectional view on the plane of the line 44 of Figure 3.

Figure 5 is a detail view of the roller-end construction of the actuating arm or lever.

In the drawings, in Figure 1, the conventional transmission (such as used on automobiles of the 7 Ford and Chevrolet types) is denoted by the numeral 6. The propeller shaft on the interior thereof is shown in phantom lines as at 1 in Figure 3. The carbureter which is conventional is indicated by the numeral 8 and the actuating arm of the throttle valve is indicated at 9. The control wire I I3 is attached thereto at one end and at its opposite end it is pivotally connected with the arm or lever II.

Referring now to Figure 3 in particular, it will be seen that the principal part of the attachment may be described as an adapter unit I2. This comprises a single metal casting which is fashioned to provide an attaching disk I3 constructed to be bolted to one end of the transmission in the manner shown in Figure 3. Numeral I4 designates a cylindrical bearing properlylined to accommodate the power supply or stub shaft I5. One end of this shaft is constructed to form a key I6 which 'is operatively connected with the shaft I. The opposite or right hand end portion of the shaft I5 is formed portion of the lever II.

with a square extension I! to accommodate the correspondingly shaped hub I 8 of the power takeoff pulley l9. Incidentally the hub is carriedby the central disk-like portion 20 of thepulley. Then too, the hub I8 is fastened to the extension I? by a cotter key or the like 2|. On the left of the web or disk 20 I provide diametrically opposed hanger brackets 22 constructed to accommodate centrifugal governor units. Each unit as shown in Figures 3 and l comprises a T-shaped member the head 23 of which forms a weight and the stem 24 of which forms an arm. It is this arm which is hingedly attached to the complemental bracket and the free end of the arm is provided with a laterally directed trip finger 25. The finger is located for engagement with a bead or flange 26 on the tapered slidable sleeve 21 which constitutes the regulator 'or thrust collar. The opposite end of this collar is also formed with an outstanding flange 2B. The parts 23 are maintained in diametrically opposed contact with the collar through the instrumentality of connecting springs 29 as shown in Figure 4. It is evident, therefore, that the shaft I5 which is driven by the shaft I'I rotates in the bearing I 4 of the adapter device. It carries with it the pulley I9 and the pulley in turn carries the duplex governor assembly. The governor units or weights fly out by centrifugal force when a predetermined speed of rotation is reached. As a result, the trip fingers 25 are forced against the thrust collar 2'! sliding this in a direction longitudinally with respect to the bearing I4. The collar strikes against the adjacent depending end As shown in Figure 5, this end portion is flanged as at 29 and is formed into a spindle to carry an anti-friction roller 30. This roller is the element against which the collar is forced. The lever is pivotally attached as at 3| to a supporting flange 32 carried by the adapter disk I3.

Summarizing the structure briefly, it will be observed that novelty is predicated on the special one-piece or single cast adapter I2 which can be attached to a conventional transmission in the manner shown in Figure 3. This part I2 is believed unique in that it includes the flange I3 and the bearing I 4 wherein said bearing serves to accommodate the shaft I5, and also serves as a guide for the slidable thrust collar 21. The shaft is believed novel in that one end portion I6 is constructed for attachment to the shaft 1, and the other end portion constructed to accommodate the hub of the pulley I 9. All of the parts have been carefully proportioned and balanced CJI to insure proper continuity and eifectiveness in operation. The governor construction is believed to be specifically neW when taken in conjunction with the pulley and thrust collar of the type depicted in the drawings.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size, and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

What is claimed is:

1. A structure of the class described comprising an adapter including an attaching disk, a tubular bearing carried thereby, a shaft mounted for rotation in said bearing, a pulley attached to one end of said shaft, governor means located on the interior of said pulley, a thrust sleeve slidably mounted on said bearing, said governor means surrounding said thrust sleeve, a lever attached to said adapter and adapted for connection with a carbureter throttle valve, and the lower end portion of said lever being constructed for cooperation with the adjacent end of said thrust sleeve.

2. A pulley structure of the class described comprising an adapter device embodying a single casting including an attaching disk having a central outstanding tubular bearing projecting concentrically beyond the disk and an eccentrically arranged lever supporting flange projecting in a direction parallel to the longitudinal dimension of said tubular bearing, a tapered thrust collar slidably mounted externally on said bearing, a shaft mounted for rotation in said bearing, a pulley attached to the outer end of said shaft,

said pulley comprising a substantially cylindrical shell having an attaching hub abutting the adjacent end of the bearing, one half portion of said shell telescopically receiving the adjacent end portion of said bearing, said end portion of the shell being provided on its interior with diametrically opposed brackets, a duplex governor assembly cooperable with said brackets, said assembly including a pair of T-shaped units, each unit having a weighted head embracing the thrust collar, the stem portion of each unit being pivotally attached to an adjacent bracket and formed with an inturned thrust finger engageable with the adjacent end of the collar, and a pair of companion springs attached to the corresponding end portions of the heads of said units to maintain them in a resilient relationship approaching each other in the manner and for the purposes described.

3. In a throttle control assembly of the class described, an adapter bracket embodying an attaching disk, a lever supporting flange extending at right angles from said disk, a central tubular bearing extending from the central portion of the disk beyond said flange, a shaft mounted for rotation in said bearing, a pulley having a hub structure attached to the outer end of the shaft and abutting said bearing, a thrust sleeve mounted for slidable movement on said bearing, a spring retained pivotally mounted governor unit supported in the shell portion of said pulley adjacent to said sleeve and having operating connection with the outer end of the sleeve, an operating lever pivotally attached to said flange, one end portion of the lever being flanged and constructed to provide a spindle and an anti-friction roller mounted for idling rotation on said spindle, said roller being adapted for cooperation with the adjacent end portion of said thrust sleeve.

EARL DE LAND.

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