US634525A - Crank-shaft bearing. - Google Patents

Description

m. sa4,5z5. Y Patented Oct. i0, l8 99.

WQA. HANCE.

, CRANK SHAFT BEARING.

(Applicntiun filed Jan. 111898. I v (Ila Model.) 7 2 Sheets-Silent l,

Patented flat. [0, I899.

no. 634,525. K

w. A. "use. CRANK SHAFT BEARING.

(Apmicstich filed I'm. 12, 1898.)

w 2 Shaata-$hoat z,

(No Model.)

. toward the right in Fig. 1.

"UNITED STATES PATENT OFFICE.

WILLIAM HANCE, or rnnnronr, BICYCLE MANUFACTURING ILLINOIS, ASSIGNOR TO Tl-IEVSTOVER COMPANY, OF SAME PLACE.

CRANK- SHAFT BEARING.

. SPECIFICATION formin part of Letters Patent NO. 634,525, dated October 10, 1899. Application filedilanuary 12,1898. Serial Ila. 666,395. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM A. HANOE, a citizen of the United States of America, re-. siding at Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Crank- Shaft Bearings, of whichthe following is a specification.

My invention has for its purpose the production of a bearing "for crank-shafts of hicycles and the like which shall enable the parts adjacent to and connected with said crank-shafts to be taken apart and assembled with the greatest possible ease.

To such end the invention consists in a bearing having certain novel features, which will be fully described in connection with the preferred auxiliary devices and the essential features of which will be hereinafter defined.

To illustrate the invention, drawings are herewith presented consisting of eight figures or views, and said drawings show the preferred form in which I have embodied my invention and also certain devices adapted to use in connection therewith. I

Of the drawings, Figure 1 is an end elevation of a'crank-shaft bearing as it appears in a bicycle-frame, certain parts being broken away to reduce the size of the figure and to reveal devices which would otherwise be hidden and the hanger being shown in section, the half in front of the bearing being cut away to reveal the latter. Fig. 2 is a section of the hanger and bearing in plane 2 2 of Fig. 3. Fig. 3 is a side elevation looking Fig. 4 is a vertical section in plane 4 4 of Fig. 2. Fig. 5 is a view of the crank-shaft and bearing-pieces separated from each other and showing the way in which the said pieces may be removed from the crank-shaft. Fig. 6 is an end view of abearing-cup. Fig. 7 is a section looking.

toward the right in plane 7 7 of Fig.2, and Fig. Sis a section looking toward the right in plane 8 8 of Fig. 5.

Looking at the figures, A is intended to represent the crank-shaft hanger of a bicycleframe. It is provided with the bosses a a. a by means of which it is to be brazed to the tubing of theframe, and is slotted across the bottom toawidth equal to orgreater than the thickness of the cranks. Upon each side .of the slot is a pair of downwardly-projecting perforated ears or lugs a a and through these perforations are run clamping-bolts c A crank-shaft is shown at B, the cranks being represented at B513 The crank-shaft and thec'ranks are shown as integral, and at the right-hand end of the shaft inFig. 2 will be seen an annular shoulder b, adjacent to which is a screw-thread b upon a portion of the shaft somewhat larger than the adjacent portions and also larger than the cranks. Near the other end of the shaft is a second screw-thread b and the diameter of the shaftat this point should be equal to or less than at the screwthread Z). Upon the screw-thread b will be seen a spider C and a bearing-cone D. The spider is adapted to receive a sprocke t-wheel and support the same and the bearing-cone to furnish a bearing-surface upon one side of a series of antifriction-balls. Upon the screwto furnish a track upon one side of a second series of antifriction-balls. Adjacent to the cone D is a perforated ring E; and a pin d is provided upon the cone in position to enter one of the perforations. The ring has a tongue 6, (see Fig. 4,) and in the screw-threaded portion 19 of the shaft is a groove b (shown in Figs. 2 and 4) to receive this tongue. A nut F is screwed upon the shaft to hold the ring against the cone. When the ring E is slipped 01f of the pin (1, the bearing-cone may be adjusted as desired. When such adjustment is made and the ring E slipped back upon the pin and held. there by the nut F, the parts are locked against any displacement, the bearing-cone being held against rotation by the ring and the ring by the shaft. All of the parts thus far described as being screwed upon the shaft are large enough to he slipped on andofi over the cranks.

Within the hanger A and about the shaft B is a bearing-collar G, which is fitted to the interior of the hanger and may be firmly clamped in position therein by means of the clamping-bolts c Said collar preferably contains and supports all portions of the bearing except those secured upon the shaftitself. Figs. 1 and 3 show this bearing-collar in position in the hanger, and it should be noticed that the removal of the clampingbolts c loosens up the hanger upon the collar and enthread 5 is a second bearing-cone D, adapted ablesthe collar, together with the entire bearing, crank-shaft, and'cranks, to be slipped,

laterally out of the hanger. This is a great advantage, inasmuch as the entire bearing may be assembled and adjusted out of the bicycle-frame. It is also an advantage, because in case of an injury to the frame the bearing can be removed while such'injury is being repaired Without interfering with the adjustment and without any danger of losing the parts of the bearing, as is the case when they must be taken apart to remove them from the frame. It is also an advantage, because in case of an injury to the hearing or anypart thereof the entire bearing can be removed in a moment and sentto the maker for repairs without sending the frame along and with a certainty that when such repairs are made all of the parts will be fitted together and properly adjusted.

The bearing-collar G is preferably divided transversely into parts to reduce the length of' the same and consequently the size necessary to enable such parts to be slipped over the angle at which the cranks join the crank shaft. A convenient division is to make up said collar of end portions g g, formed into cups to complete the ball-races, and an inter-' ball-cups g g to hold the balls in place and in putting the bearing together.

' The'exact form, construction, and arrangement of the bearing above described I consider to beimi'naterial tomy invention broadly considered, and I recognizethe fact that great variation is possible in these respects without departing from the essential features of my invention. I desire, therefore, not to limit myself to the specific construction, form or arrangement shown in the drawings'and described in the above specification.

I claim as new and desire to secure by Letters Patent- 1. The combination with a crank-shaft having suitable cones and cranks of cups corresponding to the cones, a collar connecting the cups, balls between the cups and cones and a rigid hanger adapted to embrace the collar and cups, said hanger beingislotte'd to the,

Width of one of the cranks and provided with means for clamping it upon the cups; substantially as described.

2. The combination with the one-piece crankshaft and cranks, of suitable cones upon the shaft, cups corresponding to said cones, balls adapted to run between said cups 5 and cones, a connecting-collar threaded to the cups, said cups and collar being of sufficient diameter and short enough to slip readily over ihecranks and a rigid hanger containing a longitudinal slot wide enough to permito'f the passage through it of one of the cranks and clamping devices upon the opposite ends of the hanger adapted to clamp the cups and hold them in place; substantially as described.

In witness whereof I havehereunto set my hand, at Freeport, in' the county of Stephenson and State of Illinois, this 21st-day of December, A; D. 1897.

WILLIAM A. I-IANOE. Vitnesses:

XV. A. MERRIFIELD, L. HUGHES.

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