US1119608A - Universal joint. - Google Patents

Description

R. JANNEY. UNIVERSAL JOINT.

. APPLICATION FILED SEPT. 19, 1912 7 1,1 1 9,608. Patented Dec. 1, 1914.

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R. JANNEY. UNIVERSAL JOINT.

APPLICATION FILED SEPT. 19, 1912.

1,1 1 9,608; Patented Dec. 1,1914.

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APPLIQATION FILED SEPT. 19, 1912.

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UNITED STATES PATENT orricn.

REQTNOLD JANNEY, OF NEW YORK, N. Y., ASSIGNOR TO THE WATERBURY TOOL COM- IPANY, OF NEW BRITAZIIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

UNIVERSAL JOINT.

Specification of Letters Patent.

Patented Dec. 1, 1914.

- To all whom it may concern Be it known that I, REYNOLD J ANNEY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Universal Joints, of which the following is a specification.

This invention relates to universal joints among the objects of the inventionbeing the provision of an article of this character which is-strong, compact, and effective in action;

The device possesses other features of advantage and novelty which with the foregoing will be stated at length in the following description wherein I will set forth in detail that one of the several convenient forms of embodiment of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification, this disclosure being provided to enable those skilled in the art to practice the invention. From this it will be clear that I do not restrict myself to said disclosure; I may depart therefrom in several respects within the scope of the invention definedby my claiins. h Referring to said drawings: F igure 1 is a vertical sectional view of a universal oint .involving my invention. Fig. 2 is a similar view with the parts in different positions. F ig. 3 is a horizontal section of said joint, and, Fig. 4: is a cross section of the same. Fig. 5 is a transverse section in a plane through the lower of the rectangular bushing blocks shown in Fig. 4.

Like characters refer to like parts throughout the several views.

The joint comprises in its make up a shaft, a ring surrounding said shaft, and a cruciform coupling member for operatingly uniting the two parts. Saidshaft is preferably rotative-about a fixed axis while the ring is rotative with the shaft being preferably supported by independent bearing means which may be of any suitable nature. As will hereinafter appear the ring shown in the drawings in addition to its rotary movement is tiltable or oscillatory, but this is not necessary in all cases. a

A shaft such as meets my requirements is that denoted by 2 which as represented, is provided with a closed yoke 3 between the ends thereof; this yoke is not always essential (although advantageous), in that other means may be provided for sustaining two opposite trunnions of a cruciform member,

two of its opposite trunnions supported by the shaft 2, the other two opposite trunnions thereof being sustained by the ring 5. Said cruc form coupling member 4 as illustrated, consists of two transversely disposed parts 6 and 7,, the part 6 having a substantially central portion (constituting the body of said coupling member), from which extend oppositely the approximately duplicate trunnions 8 pivotally supported within the ring 5 as will hereinafter appear. There is shown driven through. the substantially central portion of the part 6, the part 7 shown as consisting of a cylindrical pin, the terminal portions of which present two opposite trunnions rotatively supported by the sides of the yoke 3. Said sides have openings to receive the bushings 9 in which are fitted the terminal or trunnion portions of the member or pin 7, being represented as rigidly held in place by the pins 10. The

' two parts 6 and 7 of the coupling member i are held securely together by the rivet 11 extending through registering holes there- 7 vided internally thereof, with inwardly-ex I tending projections 13 disposed in approxi-' mately diametrically opposite pairs, a bushing block 14 being situated between each pair of projections. nally rectangular, and their opposite sides Said blocks are extenfit against the flat walls of said projections to, thus key said bushing blocks in place. To further prevent movement ofsaid bushing blocks the screws 15, of which there. are four, may be provided, each screw being threaded partly into a projection and partly into a bushing block by reason of which motion of said blocks in all directions is prevented. Said bushing blocks are cylindrically bored to receive for oscillation the trunnions of the part 6 as-already described.

On reference to Fig. 4 it will be perceived that there are intervals or clearance spaces between the body portion of the coupling member or. trunnion bloclrt and the sides of the yoke 3 and that there are practically similar spaces between said body portions and the bushing blocks 1 1- which is one simple way of securing a prime advantage to which 1 will hereinafter refer. ltis assumed that the axis of rotation of the shaft 2- coincides with the axis of rotation of the ring 5 but from a variety of causes such for instance as an error in workmanship or be cause of wear or changes in position due to stress, this is not always so. in view of the clearance or relief spaces to which 1 have referred, it provide for a comparatively slight amount of relative lateral motion of the shaft 2and ring 5, so that notwithstanding the fact that their axes be out of coincidence, accurate operation of the joint will follow. it will be evident therefore that when l state that the shaft 2 rotates about a fixed axis 1 mean that said axis is rigid, al-

. though it may be slightly moved, the same applying to the ring 5. In any event the deviation of the shaft or the ring from its normal axis is at best, very slight but as will be clearl have provided for the same 1 without any ill effects following.

As already set forth the ring 5 is rotary.

In the construction described it has in addition a swinging or oscillatory movement being supported for this purpose by what is known. as a tilting box "16 which constitutes a convenient means for such purpose although one of a radically difllerent hind might be employed instead; in fact the hearing for the said ring could be stationary. This tilting box is a common device in a hydraulic variable speed gear, and it has several positions, being usually movable oppositely from its neutral or zero position by hand. As the purpose of such a-device isso well known it is needless for me to describe the same. Said tilting box is shown consisting of a shell supported for oscillation by the 'pivots '16 and the means illustrated for operating said tilting box are a screw and a nut as will hereinafter appearfln'the organization shown the axis of oscillation of said tilting box is practically coincident with the longitudinal axis of the pin '3.

When the ring 5 is used connection with a tilting box it is adapted for connection with the pistons ofsuch a hydraulic variable speed gear, so that said speed gear can be brought to a state of rest or its speed regulated, and necessary changes in direc- -tion.*accomplished, by the movementof the tilting box to aneutral position or to positions opposite said neutral position, it being lents, forming no part of the present invention, are not herein illustrated; their stems may be connected with the ring in any one of several difi'erent Ways. pointed out is merely one use to which thering 5 orits'equivalent can be put.

The ring 5 is shown having on its rear side the annular rabbet or groove 17 and in the same is fitted the bearing ring 18. The ring 19 surrounds the ring 18 and is supported in the tilting box 16, and between the opposite faces or races of the two rings 18 and 19 are interposed anti-friction rollers 20 held in a cage 21, said rollers20 being provided to take upside or diagonal thrust. The rollers 22 take up end thrust being as shown of conical or tapering construction,

and being adapted to bear against inclined faces or races on the ring 18 already described and on the ring 23 set into. a rabbet or groove in the rear portion of the tilting shown provided with outwardly extending journals 27 pivotally fitting bearing openings in the'duplicate blocks 28 disposed for sliding movement in longitudinally-extending slots in the arms 29 projecting rearwardly from the tilting box. By the -opera tion therefore of said screw tne tilting box can be moved oppositely from its neutral position standing when in said neutral position approximately perpendicularly. It will be understood that as the tilting box 16 is adjusted angularly the ring 5 is similarly adjusted. The trunnion block or cruciform coupling member a connectsthe' shaft 2 and ring 5 for relative universal movement and also provides a means whereby said ring can be supported independently of said shaft, the tilting box '16 constituting conveniently such an independent support.

What 1 claim is:

1. The combination of a ring having interiorly thereof projections arranged in dia-' The illustration 1,11o,eosgt teriorly thereof projections arranged in diametrically opposite pairs, rectangular bushing blocks situated respectively between each pair of projections, the inner faces of blocks from rotating, a shaft extending througlnand having a closed yoke Within, said ring, and a cruciform trunnion member, two opposite trunnions of which are pivotally fitted in said bushing blocks, and the other two opposite trunnions of which are pivotally fitted in the branches of said yoke,

and means for keying said bushing blocks in position. c 15 In testimony whereof I afix my signature in presence of two witnesses.

REYNOLD JANNEY.

Witnesses:

HEATH SUTHERLAND, F. E. ANDERSON.

Copies of this natent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. C.

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