US1438549A - Retaining means for ratchet pins - Google Patents

Description

e. c PARISH. RETAINING MEANS FOR RATCHET PINS.

APPLICATION FILED DEC. 3; I921.

Patented Dec. 12, 1922.

ATTORNEY eaAnai/r o. PARISH, or LA in narninn, NEW YORK.

RETAINING- MEANSVFOR RATCHET PINS.

Application filed December To all whom it may concern:

Be it known that l, GRAHAM C. PARISH, a citizen of the United States, residing at Lake Katrine, in the county of Ulster and State of New York, have invented certain new and useful Improvement in Retaining Means for Ratchet Pins, of which the following is a specification, reference being had therein to the-accompanying which form a part thereof. My invention relates to retaining means for ratchet pins, and more particularly toa device for use 1n connection with a hollow pulley secured to the shaft of an internal combustion engine. by means of a ratchet pin, said pulley bein used as a driving pulley for a tan belt for circulating air about a radiator through which the water used in cooling the engine, is circulatedv combined pulley and ratchet mech anism withwhich my retaining means is adapted to be combined, i very extensively used in a certain well known type of automobile, the common practice being to proride a pulley having diametrically opposite openings through the face thereof to facilitate the mounting and removal ot'same,

the pin itself being retained within the pulley by means ot cotterpins passing through opening in the pin and projecting beyond same so as to engage the inner wall of the pulley.

It the common experience in devices of the character immediately above referred to,, for the cotter-pins to wear and become arated from the ratchet pin, thus permittinn' said ratchet 31 n toesca'oe throuph o l s opening: in the pulley and either become bent or broken in such a manner as to jam tl-e mechanism adjacent thereto, and break the driving belt or force it from the pulley, or to break oil within the pulley;

fhe a pin projects beyond the pulley and is bent out of term, it is frequently :essary to remove the entire radiator a se of the small soaceiabout this i 1 i ey. lhis small space between the pulley and the radiator also makes the use or".

tools about the ratchet venient and Cll'lllCUllZ, i

lVith the above conditionsin mlnd, I

pin both inconbave provided a retaii'ling means which, 7

drawings,

a, 1921. Serial 110419317.-

maybe quickly mounted in, and removed from, the pulley and in a relation to the ratchet pin which will avoid all possibility= ot the escape of the pin through the holes in the pulley, said means not being sub-' hand in the contracted space between the d pulley and the radiator, thus leaving the other hand ree to control the ratchet pin while the retaining means is being positioned. No tools of any kind are re 1' ed in mounting and removing the retainin means, and the positioningjot this means within the pulley will, under all conditions, be suiiiciently permanent to avoid likelihood of its escape, and. thus .it affords a positive safeguard against the escape of the ratchet pin and the complete disabling of a carthereby.

Theinvention consists primarily, in retaining means for ratchetpinsembodying therein the combination with a hollow pulley having a hub adapted to fit the shart it an internal combustion engine adacent an opening therethrough, the .face of said pulley and said hub having diamet-i rically opposite alined openings,and a pin ad *ted to passthrough said openings and project between said hub and the inner wall otthe pulley face toconnect said. pulley with said shaft and form ratchet teeth upon opposite sides of said hub, of aspiring member adapted to be bent to semi-circular form to project across said openings in the face of the pulley and have pivotal movement about an axis substznitially 'c oncentrio with that of said pin to facilitate the mountin g' and removal of the member'adjacent the inner wall 01' the pulleyg tace; and in. such other novel features of con struction; and combination oi v parts as are. hereinafter set torth and described, and more particularly pointed out in the claims hereto appended I 1 Referring to the drawings,

' thereof.

adapted to be engaged by means embodying my invention shown combined with a hollow pulley and its associated ratchet pin;

Fig. 2 is a vertical ection therethrough with the shaft shown in elevation;

Fig. 3 is a perspective View of the semicircular retaining spring removed from the pulley;

Fig. 4; is a view of another invention; and

Figs. 5 and 6 illustrate fo of the ,hALl

still another form Like letters refer to like parts throughont the several views.

In the accompanying drawings, shown at a a hollow pulley of the usual con-- struction having an overhung face I) and a hub -0 concentric with and within said face F1. The inner wall of the face 5 is substantially parallel with the cylin'c'lrical hub c, saic pulley a and its face 5 being without flanges. The formation of the contact face of the'pulley is immaterial to the present invention, since it may or may not have crown, as desired.

The hub 0 is adapted to have a loose sliding fit upon the crank shaft (Z of an internal combustion engine, which shaft has a transverse opening 6 thereth'rough adapted to recelve apm 7'.

The pi' lley face Z) and its hub 0 have diametrically opposite alined openin 's there-- through of a'diameter to permit the pin f to be passed freely therethrough and passed through the opening" 6 of said shaft, said pin being'of a length to pass through said shaft andsaid hub" and project into the space between the hub and the pulley face Z) so as to connect said pulley with said shaftand form ratchet teethupon opposite sides of said. hub the ordinary clutch member of an internal combustion engine starting crank.

The open end of the pulley while in use is presented toward. and positioned closely adjacent, the radiator of an automobile, which has led to the difiiculty of etlecting repairs in the event of the breakage of the pin or of its projection through one of the openings in the pulley face I) so that by impact with other parts about the engine, it

becomes bent or ammed so that it may be removed only by means of machmery or tools.

relation of the pin f To secure the desired permanency in the with the pulley, while at the same time permitting: the expeditious removal of a broken pin and the substitution of new one therefor, 1 provide a flexible spring member 9 adapted to be readily brought to a semi-circular form, this memfiber being of a length, so that when it is brought tothis form, it will project across the diametrically opposite openings in the pulley face 7) and engage the ends of the pin the breakage of the l we the spring training me nsis so constructed of the spring member Wlll have a permanent 1 spring wire strip,

ing against substantially diametrically opposite points either upon the inner wall of the pulley face I) or upon the pin f so as to permit the spring,'when it has been fieXed and formed, to have pivotal movement substantially concentrically with the axis of the pin f. This greatly, facilitates the mounting of said spring member. within said pulley and its removal therefrom in the event of i It is unnecessary to provide for the removal of the pin in the event of its escaping through an opening in face, since this cannot occur when said pulley member 9 is used.

While the flexibility of the spring member g willtend to hold'it firmly in place, the rethat the ends relation to the ends of the pin f, thus preventing" circumferential creepage of the spring member so as to expose one of the openings in the pulley face. This character istic of the invention may be secured either by a detachable connection between the spring meinber g and the pulley face 6 through the mediums of the openings therethrough. or by means of a detachable connection between said spring member and the ends of the ratchet pin 7. I

For convenience in mounting the spring member 9 in, and removing it from, the pulley. 1 prefer to employ the former expedient, such construction being shown in Figs. 1 to of the drawings. In this form of the invention, I provide the springmember g, which is strip of flat wire, adjacent each end thereof with rivet 1 3., the upset portion 7:. of which is of relatively smaller diameter than the openings in the pulley face 6, and the head of which is rounded shown in Figs. 2 and 3, to give a large surface for the pin 7.

The ends of the member {7' are bent sl ghtly at an angle as shown in Fig. 3, at i, to facilitate the engagement of either end of said member wi. 1 the inner wall of the pulley, and minimize any tendency of the end of the member to bite against said wall during its pivotal movement.

Referring to Fig. 4a of the drawings, the construction is as heretofore described, except that instead of using flat spring wire in producing the member 9, I use a round and instead of securing said member to the pulley a through the medium of the openings through the face 6 thereof, I provide the pin f with transverse openings f adiarent opposite ends thereof adapted to recelve the ends of the member 9. In thls form of the invention, no wear surfaces are required, slnce the distance between 1 ,aeasas the openings will center the pin 7 in relation to the shaft (Z, any thrust of said pin radially of said shaft beingagainst the tension of said spring. member. -One end of said spring member is turned'slightly as shown at 72 to facilltate the engagement of that end of the spring with. an opening Referring to Figs. 5 provided with. grooves 7' site ends thereof adapted ted end 9 ofv a Spring and 6, the pin is member 9 correspending in other respects with the form of spring member shown in Figs. 1. to 3. This form of the invention has exactly the same operative effect as that shown in Fig.4, as to the centering of the pin, and the absence of -merely necessary to pass the hand between the pulley a and the radiator, and pull the spring member 9 outwardly of said pulley, the ends of said member. having pivotal movement about an axis substantially concentric with that of the pin f. This may be done irrespective of the position of the pulley at the time, which a matter of considerable importance, since it is not always possible to stop the engine with the axis of said pin in a vertical position.

hen the spring has thus been turned, one end thereof may be flexed so as to disengage the upset end it of the rivet 72. from the opening in the pulley face I) in which it is seated, thus permitting a com plete removal of said member 9 from the pulley, and uncovering both openings through the pulley face 6. 'The pin may then be allowed to drop, or be moved, through the opening.

A new, or the same, spring member 9 is then used, the upset end it of one of the ings of. the face Z) upon the inside of the pulley, and a pin 7 dropped or passed through the alined openings in the pulley face 5, hub c and shaft (Z, until is rests upon the head of said rivet, whereupon the spring member 9 is flexed or brought to semi-circular form, and the free end thereofpassed within the pulley until the upset end h of the rivet enters the diametrically opposite opening." in the pulley-face 7), whereupon said spring member is given a pivotal movement to bring it in its entirety within said pulley.

When so positioned, the flexibility inherent to said memberg will hold it firmly in place, the upset ends it" of the rivets upon opposite ends thereof preventing any ciradjacent the oppo w to receivethe slotpivotally face. as

Y stitution of a cuinferential movement, or creepage, of said member; l/Vhen the spring member 9 is thus formed, it will have a-length of slightlyniore than 180 .in arc, and will project across both openings, the bent ends i preventing these ends biting into the. inner wall oft-he pulley face 6.

By having the upset ends it of smaller diameter than theopenings with which they co-operate, thelmember g be used with pulleys ofslightly different diameters, and greater facility is afi'orded in the handling of the retaining member. i y Y The pul ey a being" free fromany internal obstructions, it will be readily understood that the member, 9 may be readily mounted in, andremovedt'from, the pulley structure, and will be retained in flexibilityinherent thereto. e i v H "In the form of the invention shown in F 1g. 4, the same procedure is followed as referred to above in connection with [the form of the invention shown in Figs. 1 to 3-, with the exception that the turned end of the member g will be inserted in one of the openingsf before said member is given-its semi-circular form, thepin f being allowed to move to the full extent permitted by the place solely by the member 9, before the opposite end of said member is passed through the opening f in the other end of said p n, lVhen both ends of the member 5 have thus been as sembledin the pulley structure, said member receives 1 votal movement, the p n 7.

turning therewith. p H

Referring now to the form of the invention shown in F 5 and 6, the operation is the same as that described in connection with Fig. 41-. with the exception that instead of.

passing the ends of a round wire through openings in the pin 7 the forked ends 5 of the flat wire member 9 are fitted tothe slotted portions j of said pin 7", the frictional engagement of said ends with said pin caus-- ing the pin to turn with said member when imparting pivotal movement thereto to bring i t within the pulley. rivets it being inserted in one of vthe open- In the forms of the invention shown in Figs. 4i to 6, the member 9 is not permitted a reflex action sui'iciont to engagethe ends thereof with "the inner wailof the pulley in the form of the invention'shown in Figs; 1 to 3, the tension of" said spring being relied upon tocenter the pin 7 and hold the ends thereof ings in the pulleyjfa'ce 7;. r

, In all forms of the invention, the member a replacement of the pin vent its being readily started by a mere subplished. in a very short time,

away from the open pin, which may be aocomthe pulley an 7 of tools,

, and pro a spring member adapted The essential characteristic of my invenbined with, a pulley structure of the type herein referred to, in replacing a broken pin f, said member engaging the ends of said pin in manner to prevent thereof radially of the shaft (Z, and being capable of being readily and removed from, its operative relation to l to said pin without the use The member g may be readily used in conwith any pulley of the type herein it being the practlce to sell said memshow. q

her 9 with a pin 7 separate andapart from so that an automobilist may carry the pulley and spring members a reserve supply of pins in a toolbox, in order to be, equipped to quickly remove a broken pinfrom the pulley and replace it with a new one, which may be done even by an unskilled. driver. y

it is not my intention to limit the invention to the precise details of contruction shown in the accompanying drawings, it beapparent that such may be varied with out departing from the spirit and scope of the invention. l r

- Having described the invention, what I claim as new and desire to have protected by Letters Patent, is,

1 Retaining means for ratchet pins embodying therein the combination with hollow pulley having a hub adapted to fit the shaft of an internal combustion engine adj aeent an opening therethrough, the-face of said pulley and metrically opposite alined openings, and a pin adapted to pass through said openings and project between said hub and the inner wall of the pulley face to connect said pulley with said shaft and form ratchet teeth upon hub, of a sprin member adapted to be bent to semi-circular form to project across said openings in the face of the pulley and have pivotal movement opposite sides of said about an axis substantially concentric with that of said pin to facilitate the mounting and removal of the member adjacent the inner wall of the pulley face.

, rung means for ratchet pins enibodyi therein the combination with a hollow pulley having a hub adapted to fit the shaft of an nte'r'nal combustion eng ne ad acent an opening therethrough, the face of said pulley and said hub having diametrically opposite alined openings, and a pin adapted to pass through said openings 'ect betweensaid hub and the inner wall of the pulley face to connect said pulley with said shaft and form ratchet teeth upon opposite sides of said hub, of to be bent to semi-circular form to project across said openings in the face of the pulley, and propulley face, whereby axis substantially concentric with that displacement mounted within, I

said hub having dia-' of the rivet head jeetion's, adjacent the. opposite ends of said spring member adapted to enter-the diametrieally, pp"o'site openings through the said member is permitted to haye,pivotalmovement about i of said pinto facilitate the mountingand re- ,moval of the member adjaeentfthe inner wall of t he pulley face.

3. Retaining, means body ng therein the comblnation 'wlth va hollow pulley;havingv a hub adapted to fit the shaft of an internal combustion engine adjacent an opening tlierethrough, the face 'of sa d pulley and opposite sides of said hub, of ajspring memfor ratchet pins emsaid hub ;haying di a-l metr cally opposite alined openings, and a' ber adapted to be bent to semi-circularform to project across said openings in the face of the pulley, and headed rivets carried adjacentthe opposite ends of said spring member andhavmg, the upset portionsthereof project from one side thereof so as to be 'adaptedto enter the dlametrically opposite openings through thepulley face, whereby said member is permitted to have pivotal movement about an ax s substantially con-' centric with that of said spin to facilitate hem u i ns adr m val f t me isi en the i ner Wa f the pu l y face, and said member will be relieved of wear a j cent said open ng by he in rpo on between same and the end of the pin. l 4. Retaining means for ratchet pins embodying therein the combination with a hollow pulley having a hub adapted to it the shaft of an internal combustion engine acent an opening therethrough, the face of said pulley and said hub havingdia metrically opposite alined openings, and a pin adapted to; pass threugh said openings and aroject. between said hub and the inner wall of the pulley face ,to connect said pulley with said shaft and form ratchet teeth upon opposite sides of said hub, of a ber adapted to bebent to semi-circular form to project across said openings in the face of Pull y, a adjacentthelopposite ends of said spring member and having the upset portions thereso as to of project from one side thereof be adapted to enter the diametrically opposite openings through the pulley face, wherebysaid member is permitted to have pivotal moyement about an'laxis substa spring memheaded rivets carried tially concentric with that of said pin to" facilitate the mounting and removal 'of the member adjacent the inner wall of the pulley face, and said member willbe relieved of wear an 3 ,161,112 openings by the interit? position of the rivet heads between same and the end of the pin, the upset ends. of said rivets being of smaller diameter than said openings to adapt said member to pulleys of varying diameters, and the ends of said member being bent at an angle from other portions thereof.

5. Retaining means for ratchet pins adapted for use in a pulley of the character herein described, consisting of a flat spring metal strip adapted to be bent to semi-circular form, and a headed rivet passing therethrough adjacent each end thereof, the upset portions of said rivets projecting beyond the surface thereof.

In Witness whereof I have hereunto affixed, my signature, in the presence of two subscribing Witnesses, this 22d, day of Nov. 1921.

GRAHAM o. PARISH.

Witnesses:

'NORVIN R. L sHN, SARA A. J OHNSON.

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