US919700A - Adjustable bearing-box. - Google Patents

Description

J. P. & H. B. none- ADJUSTABLE BEARING BOX. APPL IOATION FILED AUG. 17,1906.

Patented Apr. 27, 1909.

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J. P. & H. E. DODGE. ADJUSTABLE BEARING BOX. APPLICATION FILED 12.47.1905.

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Patented Apr. 27, 1909.

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JOHN F. DODGE AND HORACE E. DoDeE, or DETROIT, MICHIGAN.

AD JUSTAB LE BE ARING-IB QX.

Specification or Letters Patent;

Patented April 27, 1909.

Application filed August 17, 1905. Serial No. 274,534.

To all whom it may concern:

Be it known that we, JOHN F. DODGE and Holman E. DODGE, citizens of the United States, residing at Detroit, in the county of Wayne, State of Michigan, have invented certain new and useful Improvements in Ad j ustable Bearing-Boxes; and we do declare the following to be a full, clear, and exact deson ption of the invention, such as will enable others skilled in the art to which it apper tains to make and use the same, referencebeing had to the accompanying drawings, and to the figures of reference marked there- .on, which form a partof this specification. 1

This invention relates to a crank box ad.- j aster, especially designed for use in connection with explosive engines for vehicle propulsion, and consists in the construction and arrangement of parts hereinafter fully set forth and pointed out particularly in the claims.

The object of the invention is to provide simple and efficientrneans'for adjusting the journal box of the crankshaft, or other shafting, whereby all of the wear may be readily taken up and a perfect bearing at all times maintained.

The above object is attained by the structure illustrated in the accompanying drawings, in which 1 .Figure 1 is a transverse sectional view through the crank case of an engine and crank shaft therein, as on line 1-1 of Fig. 4. Fig. 2 is a similar section with the parts broken away, as on line'22 of Fig. 4. Fig. 3 is a perspective view of the adjusting wedge with yoke and threaded stem. Fig. 4 is a fragmentary view in longitudinal section, as on line 4-4 of Fig. 1. Figs. 5 and 6 are end elevations of the parts of the crank box. Fig. 7 is an edge elevation of the adjusting wedge and yoke. Fig. 8 is an edge elevation of the cross bar which supports the bearing box and adjusting wedge. Figs. 9 and 10 are end elevations of the parts of the box.

This invention is shown in connection with a multiple cylinder engine, wherein the crank shaft 1 is provided with a plurality of bearing boxes fitted with our improved means of adjustment. As the several bearing boxes and the adjustable features are exactly alike, it will suffice to explain the in vention with reference'to one of said boxes or bearings. The lower ends of the cylinders 2 are mounted upon a hollow base 3 which, together with the semi-cylindrical oil receptacle 4 secured to said base, forms the crank case of the engine'through which the shaftl extends.

Crossingthe interior of the base trans versely are the integral webs 5 which are located between the cranks 6 of the shaft and which at their central portion are increased in thickness as at 7 to allow for the passage therethrough of the vertical hanger or tie bolts 8., The upper half 9 of the crank box is confined in a recess formed in the lower edge of the enlar ed portion. 7 of the web and is held againsfiateral dis-placement by the marginal flanges 10 thereon. The lower portion 11 of the crank box is confined in place by the downwardly extending guides 12 depending from the central portion 7 of the web between which the lower part of the box is held against lateral displacement by the marginal flanges 13 thereon, said upper and lower portions of the box embracing the crank shaft, as shown. The under face of the lower portion 1.1 of the box is inclined, as at 14, between the side flanges 13. En-

gaging said inclined face is a slidable wedge 15 upon which the lower part of the box rests, said wedge having a yoke 16 which embraces one of the vertical guides 12 and from which extends a threaded stem 17. Supporting said slidable wedge is a cross bar 18 having apertured bosses 19 through which pass the lower ends of the tie bolts 8 which receive the nuts 20 by means of which said cross bar is drawn tightly against the lower ends of the guides 12, the upper ends of said tie bolts passing through and being secured in the flange 2-1 between the bases of the cylinders, as clearly shown in Fig. 4. Upon one end of the cross bar 18 is a projecting arm 22, having an upwardly extending car 23 through which passes the threaded stem 17 on the yoke of the adjustable wedge. Screwed upon said threaded stem on each side of the ear 23 are the nuts 24 and 25 through the medium of which said wedge may be adjusted to compensate for the wear on the crank box. By loosening the outer nut 24 and turning the inner nut 25 as thoughto screw it outwardly upon the stem, the wedge 18 will be forced inwardly under the lower portion of the crank box, thereby crowding said lower portion upwardly and taking up all play in the journal incident to the wear of the parts. After adjustment, the wedge may be securely lockedby tightening the nut 24. By means of the cross .alinement.

By means of the slidable Wedge, the bear ing may be so perfectly adjusted as to obviate all lost motion and pounding and at the same time prevent undue friction at the journal by excessive pressure of the box thereon incident to imperfect adjustmei'rt.

Having thus fully set forth our invention, What We claim as new and desire to secure by Letters Patent is 1. In an adjustable crank shaft bearing for explosive engines, the combination with the base of the engine cylinder, of a Web depending from said base ha ing box guides, a two-part bearing box confined between said guides, a crank shaft embraced by the hearing parts of said box, a movable bar crossing the ends of said guides and supporting the bearing parts and shaft, tie bolts extending from the base of the cylinder and engagmg the opposite ends of said bar to draw said bar against the ends of said guides and carry the thrust on the bearing parts, and an adjustable Wedge interposed between 1 bar and the lower box member.

2-. In a bearing box, the combination with the shaft, of the twopart box, guides be tween which the parts of the box are eonfined, a bar crossing the ends of the guides supporting the box members, means for holding said bar against the -ends of said guides, said bar having a projecting ear with. an aperture theretln'ough, a wedge inter posed between the bar and the lower part of the box, said wedge having a threaded stem passing through the aperture in the ear of said bar, and nuts upon said stem engaging the opposite faces of said ear.

3. in an adjustable crank shaft bearing i for explosive engines, the combination with the base of the engine cylinder, of-suspension tie rods connected to said base and depend ing therefrom, a supporting bar engaged by and crossing between the lower ends of said tie rods to which said bar is connected, movable bearing parts supported holly by said suspended cross bar, a shaft embraced by the parts of the bearing, means for preventing lateral movement of the bearing parts, and an adjustable wedge engaging the lower of the gearing parts and interposed between said part and said cross bar.

In testimony n hereof, we sign this specification in the presence of two witnesses.

l. DODGE. HORACE l). l)(c) l)Gl.

Witnesses: V

ELMER ll. STONE, O. B. Bxlnnzronn.

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