US1418805A

US1418805A - Sleeveless reversing clutch

Info

Publication number: US1418805A
Application number: US477511A
Authority: US
Inventors: David C Klausmeyer
Original assignee: Cincinnati Bickford Tool Co
Current assignee: Cincinnati Bickford Tool Co
Priority date: 1921-06-14
Filing date: 1921-06-14
Publication date: 1922-06-06
Anticipated expiration: 1939-06-06

Description

n.. c. KLAUSMEYER. SLEEVELESS REVERSlNG-CLUTCH.

APPLICATION FILED IUNE I4, I

Patented June 6,1922.'-

om .www n w M D Ja n n 5 m .HWNI C DAVID C. KLAUSMEYER, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI BICKFORI) TOOL COMPANY, OF CINCINNATI, Oli-IIC, A CORPORATION OF OHIO.

SLEEVELESS REVERSING CLUTCH.

ifiisrscs.

Specicaton of Letters Patent.

Application filed June 1921. Serial No. 477,511.

To all whom t 'may concer/n:

Be it known that I, DAVID C. KLAUSMEYER, a citizen of the United States, residingat Cincinnati, in the county of Hamiltonv and State of Ohio, have invented a new and lmproved Sleeveless.1 Reversing Clutch, of which the following specification is a full disclosure.

rThis invention relates to frictional reversing mechanism useful in connection with vaions machines and its primary object is to render available a structurel characterized by extreme simplicity and compactness.

This invention also contemplates; the employment of a closed casing within which is contained all of the various working elements so mounted and arranged as to admit of being readily assembled anvd the invention also embodies simple means whereby the gears may be maintained with precision in their correct meshing relation and where by adjustment for wear may easily be made Y by merely replacing` certain bushings; the various parts being deinountable to facilitate the replacement of the bushings.

Qther objects and advantages will be in part indicated in the following description and in part rendered apparent therefrom in connection with the annexed drawings.

To enable others skilled in the art so fully to apprehend the underlying features hereof that they may embody the same in the various ways contemplated by this invention, drawings depicting a preferred `typical construction have been annexed as a part of this disclosure and, in such drawings, like characters of reference denote corresponding parts throughout all the views, of which F ig. 1 is a longitudinal section. showing the relations of the various elements. Fig. 2 is an end view looking towards the left of Fig. l. Fig. 3 is a section through line SMB of Fig. l showing the means for manui ally shifting the clutch-actuating collar. Fig.

4 is an end view. partly in section, of one of the clutches. Fig. 5 is a section through line 5-5 of Fig. 4. Fig. 6 is a section through line (if-6 of Fig. l, and Fig. 7 is a section through 7.-7 of Fig. 6.

The various working elements are mounted in a casing which is preferably enclosed so as to hold a bath of lubricant; such casing consisting conveniently of the two parts l and 2 suitably bolted together. The assembled sections provide two end-walls 48 and 49 which are apertured to accommodate the'shaft The aperture in the'end wall 48 is relatively large and permits the bush- Patenten aune e, ieee.

shoulder 50 which bears against the washenlike portion 47 of the bushing 13 which is secured in the smaller aperture of the wall 59; the reduced end 12 of the shaft l1 being journaled within said bushing.

The other end of the shaft llA is reduced, as indicated by l0, and is journaled within the bushing 5l which also has at its end a washer-like flange 14 bearing against shoulder 52 on the shaft so as to retain it in place. The bushing 5l is mounted within capV 3 which, by means of bolts 53 and position-screws 54, is adjustably secured to the outer face of the end-wall 48; thereby determining the position of the flange 14 which, as will hereinafter be explained, kcooperates with the flange 47 on the other bushingto limit the separation of the gears and hold them kin correct mesh with the bevel gear 43.

The motion may be transmitted to or from the shaft ll by means of a pulley or other prime-mover 55 which, preferably, is journaled on the outer periphery of the sleevelike portion provided by the cap 3. This pulley is shown secured to the shaft through the intermediary of a. member 5 which is, by means of the screws 6, bolted to the hub 4 of the pulley. `The member 5 is, in turn, keyed v(as indicated by 7) to the end 9 of the shaft il; a taper pin 8 being also used to prevent any end-play. The web of the pulley is proif'ided with an aperture 40 through which access may be had to a cap nut 39 which is screwed into the lower part of the casing and which may be removed for the purpose of draining the oilrtherefrom and for affording access to the clutches for purposes of regulation.

A hub 4l of the frame extends transversely to the shaft ll and contains a bushing 42 within which is journaled the sleeve 44 of a common bevel gear 43. This gear is, by means of the feather 45, splined to -the other transmission shaft 4G through which motion is conveyed either into or out of the casing, as the case may be.

Mounted appropriately directly on the shaft are two gear units which may be integral but which preferably consists of two parts, to wit: the gear proper and the friction element. This friction element is in the form of an annulus providing a ring having a socket 27 upon its outer end; the inner periphery of the ring serving as a friction surface. rllhis element is provided with a sleeve 29 journaled loosely directly on the shaft 11 so that it may rotate freely on said shaft and so that it may have a slight axial movement to permit the pitch circles of the gears to be maintained coi'- rectly in coincidence when said gears are transmitting power, as will be explained.

The gears 30 and 31 may be, by means of screws 32, secured firmly to their respective friction elements so as to form therewith a unitary structure; this arrangement permitting very high grade material to be used for the gears without materially increasing the expense of the construction, and also facilitating the cutting of the teeth. These gears are conversely arranged, as shown, andv are each simultaneously in mesh with the common gear 43 and, as will be understood7 they accordingly will run in opposite directions. The motion, therefore, will be transmitted in one direction or the other depending upon which one of the gears has been brought into a non-rotatable relation with the shaft 11. This is effected by one or the other of the two friction clutches which are preferably constructed as follows:

A shoe-supporting block 15 is splined to the shaft 11 by means of a key 16; this block 15 being located within the chamber 27 and arranged between the gear 30 and the end wall of the casing. The block 15 provides a sleeve which at 56 abuts against the fric tion element E; the position being maintained and regulated by the `thickness of the flange 14E on the bushing T his block provides an annular chamber 17 in which is located a. brake shoe 18 non-rotatably secured thereto by means of a key 19. Tiis brake shoe is of the expansible type and1 when expanded, frictionally engages the inner face of the element E and locks the lgear 30 to the shaft 11. T he brake shoe preferably is provided with a few grooves 27 for collecting dirt and containing lubricant, so as to keep the frictionally engaging faces in good condition.

The expansion of the brake shoe is effected by a shiftable lever mechanism which, in the form herein shown5 may consist of a taper pin 22 having its end 23 screw-threaded into a floating locknnt 211 which rides in a recess 25 provided by the clock 15. A. clamp block 57 is engaged by

twin screws

58 and 59 so that the pin 22 may be secured positively in its adjusted position. The adjustment is ef fected by removing the nut 39, which makes the ends of the various screws accessible through the hole Ll() iii the pulley to a. screw driver by slightly rotating the shaft.

A pair of twin levers 2O and 21 are eccentrically journaled on the taper pin and bear against the ends of the expansible shoe 18; the ends of said levers extending into a recess 17 provided by the friction element E. rllhe shaft 11 has a segment removed iii the vicinity of the twin levers so as to allow the saine to project slightly into the contour of the shaft and make provision for a swing ing movement of said levers.

The means for actuatino' the aforesaid vlevers comprises a shaft 3S journaled in the frame and teri'ninating in an arm 37 having a slice 36 riding in the groove of a spool 35 that is shiftably mountedd on the shaft 11 so that when the shaft 38 is partially rotated by hand, the spool will be shifted towards one or the other of the gears. rlhis spool is attached to an elongated key 33 which slides in a. keyway in the shaft so that its ends may pass through the bores of the members E. The ends of the key are tapered so that they may slide the levers and effect a clamping` of the brake shoe 18 as before ijlescribeiil.

lt will tliiis be seen that this invention proijioses a very'coinpact self-contained and rugged device well adapted for use whereever it is desirable to effect a stoppage of or a reversal in motion.

Without further analysis, the foregoing will so fully reveal the `gist of this invention that others can, by applying current knowledge, readily adapt it for various utilizations by retaining one or moie of the essential characteristics of either the generic or specific aspects of this invention, and, therefore, such adaptations should be. and are intended to be, coinpreliended within the meaning and range of equivalency of the following claims.

Having thus revealed this invention, l claim :is new and desire to secure the following combinations and elements, or equivalents thereof, by Letters Patent of the United States:-

1. A. frici'ioinrl niatleti-reverser coinljiining a casing; removable journals positioned in the end-walls of said casing; a. solid shaft non-translatably `ioiirnaled in the journals in the end-walls of said casing and having one end protruding; means connected with said end to drivesaid shaft; a second shaft extending through a sidewall of said casing; a bevel-gear aflixed to the inner end of said second shaft and located closely to said first shaft; two bevel-gears in mesh therewith `iournaled on said first shaft. the outer ends of said two gears each providing an annular recess, an expanding shoe arranged in each recess; two shoe-supporting blocks slidably keyed to said shaft and arranged respectively at the outer ends of said two gears in abutment with said journals; levermeans for expanding said shoes; a shiftable Collar mounted directly on said shaft Supporting said two gears; an elongated key splined in said shaft and adapted to be translated by said collar to operate alternately said lever-means; and means for adjustably shifting one of said journals towards the other to take-up wear and maintain the coincidence of the pitch-lines of said gears; said means being operable externally of said casing.

2. A frictional motion-reverser combining an enclosed casing having coaxial apertures in its opposite end-walls7 the one aperture being larger than the other; a removable bearing secured to the casingadjacent the larger aperture; a shaft journaled in said bearing and in the smaller aperture of the end-wall of said casing and; having one end protruding through said bearing, said shaft being bodily removable through the larger aperture; means connected with said end to transmit motion to or from said shaft; a second shaft extending through a side-wall of said casing; a bevel-gear affixed to the inner end of said second shaft and located closely to said first shaft, the outer ends of said two o'ears providing an annular recess, an expanding shoe, arranged in each recess; two shoe-supporting blocks affixed to said shaft and arranged respectively at the outer end of said two gears closely adjacent the end-walls of said casing; lever-means for expanding said shoes; a shiftable collar mounted on said shaft midway said two gears; and an elongated key splined in said shaft and adapted to be translated by said collar to operate alternately said lever-means.

3. A frictional motion-reverser combining an enclosed casing having coaxial apertures in its opposite end-walls, the one aperture being larger than the other; a removable bearing secured to the casing adjacent the larger aperture; a shaft journaled in said bearing and in the smaller aperture of the endvwall of said casing and having one end protruding through said bearing7 said shaft being bodily removable through the larger aperture; means also j ournaled on said bearing and connected with said end to transmit motion to or from said shaft; a second shaft extending through a side-wall of said casing; a bevel-gear affixed to the inner end of said second shaft and located closely to said first shaft; two bevel-gears in mesh therewith j ournaled on said first shaft, the outer ends of said two gears providing an annular recess, an expanding shoe arranged in each recess; two shoe-supporting blocks aiiixed to said shaft and arranged respectively at the outer ends of said two gears closely adjacent the end-walls of said casing; lever-means for expanding said shoes; a shiftable collar mounted on said shaft midway said two gears; and an elongated key splined in said shaft and adapted to be translated by said collarl to operate alternately said levermeans.

t. A frictional motion-reverser combining an enclosed casing having coaxial apertures in its opposite end-walls; the one aperture being larger than the other; a removable bearing secured to the casing adjacent the larger aperture; a shaft extending into the smaller aperture of the end-wall of said casing and having one end protruding through said bearing, said shaft being shouldered to prevent longitudinal movement thereof and adapted when said bearing is detached to be bodily removable through the larger aperture; a second shaft extending through a side-wall of said casing; a bevel-gear affixed to the inner end of said second shaft and located closely to said first shaft; two bevel-gears in mesh therewith and shiftably mounted on said first shaft, the outer ends of said two gears providing an annular recess; an expanding shoe arranged in each recess; two slice-supporting blocks splined to said shaft and arranged respectively at the outer ends of said two gears closely adjacent the end-walls of said casing; replaceable thrust-elements arranged between said blocks and the endwalls of said casing and adapted to limit the separation of said two gears under the pressures of the tooth intermesh; levermeans for expanding said shoes; a shiftable collar mounted on said shaft midway said two gears; and an elongated key splined in said shaft and adapted to be translated by said collar to operate alternately said lever-means.

5. A frictional motion-reverser combining` an enclosed casing having` coaxial apertures in its opposite end-walls; the one aperture being larger than the other; a removable bearing secured to the casing adjacent the larger aperture; a shaft arranged in said bearing and in the smaller aperture of the end-wall of said casing and having one end protruding through said bearing, a second. shaft extending through a side-wall of said casing; a bevelgear affixed to the inner end of said second shaft and located closely to said first shaft; two bevel-gears in mesh therewith journaled on said first shaft; the outer ends of said two gears providing an annular recess, an expanding shoe, arranged in each recess; two shoe-supporting blocks keyed to said shaft and arranged respectively at the outer ends of said two gears closely adjacent the end-walls of said casing; bushings arranged in said removable bearing and also in said smaller aperture, said bushings having portions intervening between the end-walls of, said casing and said blocks to limit the end-play of said two gears, said shaft and bushings being bodily removable, through the, larger aperture; Inwtness Whooof, 'I 'hoe'lmto Subsarixo lever-means for expandlng sand shoes; :L my name, as zriftstd by tho two sulilsorlbimcg shlftable 001km' mounted on said shaft mld- Wltnesses.

Way said two gears; and an elongated key DAVID C. KLAUSBIIEYER.. splned n said shaft and adapted to be 7tnesses: translated by said 0011211' to opefate alter- C. C. SLETE,

.mately said lavar-means. ANNA M. HUSSIAN.