US538055A - Rotary shaft and journal-box - Google Patents

Description

(No Model.)

' Al Sl ROTARY SHAFT AND JOURNAL BOX.

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AMBROSE S. VOSE, OF BOSTON, MASSACHUSETTS, ASSIGN OR TO TI-IE VOSE EDGE FINISPIING COMPANY, OF NASHUA, NEW HAMPSHIRE.

ROTARY SHAFT AND JOURNAL-Box.

SPECIFICATION forming part of Letters Patent No. 538,055, dated April 23, 17895.

Application filed January 24,1895. Serial N0.536,029 (No model.) y v .To all whom t may concern:

Beit known that I, AMBRosE S. Voss, residing in Boston, county of Suffolk, and State of Massachusetts, have invented an'Improvement in Rotary Shafts and Journal-Boxes, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to a novel construction of rotary shaft and its journal boxes, whereby lateral or radial motion or vibration of the shaft is avoided, and this invention is especially adapted to machines in' which an operating tool is secured directly to the shaft to rotate therewith;

In the present instance, this invention is illustrated in a machine for treating the heels of boots or shoes, and the said machine is herein shown as provided with a rotary cutter, which may be of any suitable or desired construction for trimming the heels or edges of the sole of boots and shoes.

In machines of the class referred to, as now commonly constructed and known to me, the rotarycutter shaft is made cylindrical and is supported in cylindrical journal boxes, and after running for a substantially short time, the journal box becomes worn or enlarged, so that, the rotary shaft is afforded a slight radial or lateral movement, which produces a vibration or trembling of the shaft and its attached cutter or tool, and as a result, the work is imperfectly performed, that is, the rotary cutter or tool chatters, and minutely gouges the leather or other material, producing imperfections in the finished work, so that, after running ,a substantially short time, the machine is rendered practically inoperative for perfect work, `until supplied with new journal boxes, which results in inconvenient delays and expense.

This invention has for its object to obviate the above mentioned defects in machines of the class referred to, and this result is accomplished in a manner as will be described. In accordance with this invention, the shaft is provided at its opposite ends with tapering or cone-shaped journals, the tapers-of which extend in opposite directions, and the bearings for the said shaft are provided with journal boxes, having tapering or conical openings through which the tapering journals are extended, the said conical or tapering open- `ings corresponding to the taper of the said tion to enable it to be understood; Fig. 2, a

longitudinal section of the machine shown in Fig. l on the line 2 2, and Fig. 3, a sectional detail on the line 3 3, Fig. l.

Referring to Fig. l, A represents a yokeshaped casting provided with arms a a. having hollow bearings a2 d3, which parts may be of any suitable construction, such as now commonly employed in boot and shoe trimming machines, the frame-work described being usually supported upon an upright column or other suitable foundation. The yokeshaped piece or frame-work A supports a cylindrical shaft b (see Fig. 2) which in accordance with this invention is made tapering or conical at its opposite ends to form tapering journals b bthe tapers of the said journals extending in opposite directions as clearly shown in Fig. 2.

The tapering journals b b2 have co-operating with them journal boxes b3 b4, which may be of any suitable material, and which, in the present instance, are shown as cylindrical in shape to fit into and extend through the hollow bearings a2 a3 of the framework.

The journal boxes b3 b4 are provided with holes or openings b5 b6 extended through them, and tapered or made conical to tit their cooperating journals. The journal boxes b3 btv are adj ustably secured or held in position within the bearings a2 a3 against longitudinal movement by suitable means, which, in the IOO present instance, is shown as threaded collars or rings c c c2 c3 engaging screw threads c4 c5 c6 c7 on the outside periphery of the journal boxes b3 b4 at their ends, the said threaded rings or collars, when in adjusted position, abutting against the opposite ends of the bearings a2 a3 as clearly shown in Fig. 2.

The shaft b may be prevented from moving longitudinally in any suitable or desired manner, and in the present instance, the cyv lindrical portion of the shaft intermediate of the conical journals is represented as provided at one end with a ring or collar cs rendered fast on the shaft by a set screw c, the ring or collar o8 co-operating with the jour nal box Z13, while the opposite end of the cylindrical portion of the shaft may be provided With a similar collar, but I prefer to extend the tapering journal b2 beyond its box b4 and provide the extended portion with screw threads om with which cooperates a threaded ring or collar cl2.

From the above description, it will be seen that the journal boxes b3 b4 may be adjusted longitudinally on their journals, as the said boxes become worn or enlarged, thereby enablingthe samejonrnal boxes to be used a substantially long time or until practically Worn out, while, at the same time, a true and accurate bearing for the shaft is obtained, which prevents any radial or lateral movementof the shaft at either end, thereby avoiding any vibration of the same, which would be productive of an imperfect action of the operating tool carried by the shaft.

In the present instance, I have chosen to illustrate the operating tool as a rotary cutter consisting of a cutter head or carrier d, and a plurality of cutters or knives d', which tool may be supposed to be a rotary trimmer for acting upon the heel of a boot or shoe, the said cutter having co-operating with it an edge guard or disk d2 provided with a sleeve d3 loose upon a cylindrical portion or exten sion d4 of the journal b2, the sleeve d3 being prevented from longitudinal movement in one direction by the cutter head d and in the opposite direction by the collar d5 fast on the shaft b by the set screwr d6.

The cutter head or carrier d is fitted on a portion dw of the shaft extended beyond the cylindrical portion d4, and may be secured thereon in any suitable manner, it being shown in Fig. 1, as fastened on by a screw dw, which extends into a threaded socket in the end of the extension d15 and not herein shown.

The journal boxes b3 b4, while adjustable longitudinally on their respective journals, are prevented from rotary movement therewith in any suitable or desired manner, and in the present instance, this is accomplished by providing each journal box with a longitudinal groove or slot f on its outer circumference, into which projects a spline or key 6 5 f also fitted into a corresponding groove or slot in the inner circumference of the bearing as shown in Fig. 3, the said key or spline being rigidly secured by means of the set screwfo by which lateral movement or play of the journal box in its bearing is avoided. Furthermore, each journal box may be provided with a suitable channel f2 extended toward the opposite ends of the said box and provided with branch ducts or channels extended through the said box, the channel f2 communicating by a supply duet f4 in its bearing with an oil cup f5, as shown in Fig. 1.

The cylindrical shaft b, as herein shown, has fast to it in any suitable manner, apulley f6, and the tapering journal b may be extended beyond its box b3 and have fitted on it a fly or balance wheel f7 having a tapering bore or hole in its hub to fit. the tapering end of the said journal, the extreme end of which may be provided with screw threads f3 to receive a nutf, which locks the said fiy wheel on the said journal.

In the present construction of the machine` the journal box b3 maybe adjusted on the journal b to take up the wear, by partially unscrewing the threaded collar c, and then screwing up the collar c', which latter, acting against the bearing a2, draws the journal box up on the tapering journal b', after which the collar o8 is placed against the box b3 and rendered fast on the shaft l).

To adjust the journal box b4, the operator unscrews the threaded collars 012,03 and screws up the collar c2, which latter acts against the bearings a3 and draws the journal box h4 upon the journal b2.

I claim- 1. The combination with a rotatable shaft provided with tapering or conical journals extended in opposite directions, journal boxes having tapering holes through which said journals extend, bearings for said boxes, and adjustable means at opposite ends of the said bearings to adjust the said boxes on the taperering journals, and secure or lock the said boxes in their bearings in their adjusted positions, for the purpose specified.

2. The combination with a rotatable shaft provided with oppositely extended tapering or conical journals, journal boxes having tapering holes through which said journals extend, and provided with screw threads on their outer peripheries, hollow bearings .through which said boxes extend, and threaded collars to engage the screw threads of the journal boxes at opposite ends of their bearings, sub stantially as and for the purpose specified.

3. The combination with a rotatable shaft provided with tapering journals, tapering journal boxes for said journals, bearings for said boxes through which the said boxes extend, means adjustable on the opposite ends of the said boxes co-operating with the opposite ends of the bearings to adjust the boxes on their tapering journals and lock the said boxes in their adj usted positions against longitudinal movement in their bearings, substantially as described.

4. The combination with the shaft b pro- IIO vided with the oppositely extended tapering journals b b2, the tapering journal boxes b3 b4 co-operating therewith and provided at their ends with screw threads on their outer peripheries, the hearings a2 a3, and the threaded collars engaging the threaded peripheries of the journal boxes and co-operating with the said bearings to adjust and lock the boxes in their adjusted positions, substantially as described.

5. In a machine of the class described, the following instrumentalities, Vizz-a yokeshaped frame provided with arms a a having bearings, oppositely tapered journal boxesextended through said bearings, the shaft b provided with oppositely tapering journals extended through the said journal boxes, and means secured to the shaft b intermediate of its journals and by which rotation of the shaft in its journal boxes, may be effected, substantially as described.

6. In a machine of the class described, the combination with a rotary shaft provided with oppositely tapering journals, oppositely tapering journal boxes through which said journals extend, bearin gs for said boxes, means to adjustably secure the said boxes in their bearings, an operating tool secured to one of the tapering journals beyond its box, and a i'ly or balance wheel provided with a tapered bore to t the tapered end of the other journal eX- tended beyond its box, substantially as described.

7. In a machine of the class described, the combination with the shaft b provided at one end with the tapering journal b and at its other end with the oppositely tapering journal b2L having its end adjacent to the shaft h provided with screw threads 010, journal boxes b3 b4 provided with tapering holes b5 h6, screw threads on the peripheries of the said boxes at their opposite ends, bearings for said journal boxes, threaded collars c, c', c2, c3, the threaded collar 012 engaging the screw-threads cw, the pulley f6 fast o n the shaft b intern1ediate of its journals, the fly wheel fitted on the extended end of the journal b', and a cutting tool secured to the extended end of the journal h2, substantially as described.

In testimony whereof I have signed my naine to this specification in the presence of two subscribing witnesses.

AMBROSE S. VOSE.

Witnesses:

JAS. H. CHURCHILL, J. MURPHL

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