US827235A

US827235A - Ratchet mechanism.

Info

Publication number: US827235A
Application number: US23551004A
Authority: US
Inventors: Isaac M Hackney
Original assignee: BROOKS TIRE MACHINE Co
Current assignee: BROOKS TIRE MACHINE Co
Priority date: 1904-12-05
Filing date: 1904-12-05
Publication date: 1906-07-31
Anticipated expiration: 1923-07-31

Description

PATENTED JULY 5-1 1906.

I. M.. HACKNEY.

RATGHET MECHANISM. APIfLIOATIOK FILED D30. 5, 1004.

'2 SHEETS-SHEET 1.

THE NORRIS PETERS co., WASHINGTON, n. c,

No'. 27,235. PATENTED \JU-LY 31,1906. I. M. HAGK'NEYJ RATGHET' MECHANISM; APPLIOATIOK FILED DEC. 6, 1904.

TN: NORRIS PETERS co ISAAC HACKNEY, .OF .WIcn1TA,,K -Nsiis, lAssIeNoarro'rHEfBRooKs TIRE MACHINE :(JOMPANY, or WIGHITA, KANSAS A-IGORBORATIGN-OEH Y KANSA SF; Q

-iIlo. 127,235.

. To all whom it may'concern! A Beiitiknownthat I.,IsAAc MfHAcK' ma citizen of the United States, residing .at 'Wichita, Sedgwick county,

I RAT GHETlMEoHA NlsM.

Specification cf LettersfiPaltent. Application 519a December 5; 1904, Serial No.- 235,510.

l I v Kansas, havein I 5 vented a certain new and useful lmprove f mentzin.RatchetwMechanisms, ofwhich'the following is a r1111, clear, and exact. descrip ftion, such as will enableothersskilled in the the same, reference being had tonthe accomigp anying drawings, forming .p art ofthis sp eci j- .'fication,inwhich 1 "Figure 1 is,-a.rsideelevationalview of a p, art to whichitappertainsto make and usef .TIIQ

'qpower device-constructed in accordance with v -I 5v-rny invention, parts being broken. away "to show theposition of :thepivoted dog on. the

lever.. Fig. 2.is--. an endview -of thepowei',

--.device. "Fig. 3 is a cross-sectional wiew shaft of .the ratchet-wheel being shown ,in

through the ratchet-Wheel, the eccentric j 20,

-.elevation. Fig. i is anedge view of a-portion Not .thelever,- the operating-dogs, and the] 7 ,.standard .to which the. lever isjfulerumedi,

'5 isa fragmentary view of "the-ratchet mechanisrn, showing the location of'rthe dog lin its reversing position. Fig.-I6,is' a;;;view;,; partly-in elevation and-partly in section, of a r I -modified term ofratch'et mechanism having "a bearingcfor providing a short-throw of the .lever with-amaximum power; ,Fig. 7 is a.

si-milar viewshowingthe; bearing positioned togprovide a long throw of the -lever with reI- .-.;duced l the-standard, the bearing, and the lever.

ipower;,sand Fig. 8 is a detail view oi- Ibis-invention relates to ia ratchet in'echw anism, :and-i-t is particularly designed for use::

v in connection with tire-setting machines, the

form illustrated-in Figs; '1 .and 2 beingshown in an applicationifor ,patent filed byrne No-j 182,327., which said application is a. continuvem'ber '23,, 1-903, and. given Serial No;

Nation of a similar application filednby me;

, ,rJ-UHQ 4,; 190 2, andgivenSer-ial No. 111,658,.

One of the objects ofthisinventionis {to Another object is to' provide an efficient -provide apower devicejwhereby, the manual I power-.eXertednpon a lever. may-be multi-;

' neans for manually-operating san .eccentric.v

thereto and to provide means for restoring 1 y-theshaftto itsoriginalposition 311 166,; the shaft will. be rotated, so that-lithe vide a-cheap, durable, and eilicient device for use in connection with tiresettingI-machines, and ,particularly for drawing the movable head orheads -thereo't towjard, or

away from each'other. r

The .form. of device illustrated in fFigs. 1

and '2 consists of a frame of which 'thegpfa'rt designated bythe numeral1 =is .one sidefthe opposite side being similar and. supporting a sliding. member 2', in which'is -an:eccentricp or- .tion 3 of ashsi'fthaving an angularlendj l="-to receive adouble ratchet -5.,.,provided an intermediate hub .portion ".6, which rests'in a bearingfin the standard7, pivoted' beneath the ratchet, which standard ,'7 ff-is previ"(fled with a rearwardlyextending. arm 8,. to which Iisconnected' a pivotedileverg. "This'lever 9 carries a; divided dog, comprising twoimem b'ersfl'O and 11, connected shypthepivot 12 which-passes through the lever, the opposite I :free ends of the meniberslO and T11 =o'ffithe dog being weighted as at 13 and 14, so-that .75 i the'dog-will'ihave atendencyto.gravitateJto force the. pins Hand .16 into engagement with the spaces between the teeth of the ratchet, aswill be described more'ifullylhere finafter. y p The pivoted stop 17, .carried'by the.lever, is adapted vto :actias 5 a retardingmediumito normally prevent the passage of thedog mernbers beyond the .p'ivotallpoint .'tl1ereoi;;-but 85 said-member 17 maybe raised ;so as tojp'er- ,mit this as occasion may'demand.

Carried by the shaft, near therespective T ends thereoflare links, ,one-ofwhichis shown I in Figs 2 and 3, saifdLlink beingjdesignated by the reference-numeral18. .LiriksTSia're connected to the :eccentric ,p0ritionsi 1'9. ofithe shaft :3 so that the rotation of thes'ha ftwill cause a forwardor rearward movement-of ithe fslidingmemberQ. p v I The path of movement iollowed by ithelle-.

- ver is' illustrated-inFig -1; When-:ithisdesired to impart power to? the shaft 3., theJle ver will 1 be raised ilor .-tilted forward. so that the 'dog will-engage in thedoub'le rows of ratchet-tseth of thejratchet wheeh 'By applyingpower manuallyor otherwisezs'o as to cause the lever to-travel in the .d-irection'indk .15 Bshaft so as to impart aparti'al revolution thefposi-tion shown in dotted lines-in said figthe opening in the link 18 will cause a moveand the opposite member, to which the link is attached, is a sliding member the opposite member will be caused to move toward or away from the member 2 in an obvious manner. In some instances it may be desirable to make both members slidable, in which event the rotation of the shaft 3 will impart a sliding movement to both members.

By reference to Figs. 1 to 5 it will be observed that the intermittent enga ement of the dog with the ratchet-wheel wil cause a progressive movement to be imparted to the ratchet-wheel and to the shaft, so that the extent of movement of the movable part controlled by the shaft may be regulated. Inasmuch as the dog is pivoted to the lever close to the fulcrum and the lever is of considerable length and as the lever is fulcrumed near the periphery of the ratchet-wheel, it is obvious that considerable power may be exerted upon the ratchet-wheel, although the extent of the rotary movement imparted to the ratchet-wheel will be sli ht. The necessary rotation, however, ma e imparted by successively and intermittently en aging the teeth through the medium of the og.

Under certain conditions it is desirable that less than a com lete rotation of the shaft f be effected before t e shaft is returned to its original position, and when such a condition arises the shaft can be returned to its original position by throwing the dogs past their pivotal points, causing them to assume a position similar to that indicated in Fig. 5, and by reversing the operative movement of the lever an opposite movement can be imparted to the ratchet-wheel and to the shaft.

It will be observed that the ratchet-engaging portions 15 of the dog 13, carried by the lever 9, are of such form as to engage the recesses in the periphery of the ratchet, so that during the movement of the ratchet the ratchet-engagin portions of the dog carried by the lever 9 wi l havea rotary movement in the engaged seat on the ratchet, so as to avoid liability of accidental displacement of the' engaging portion of the dog with the ratchet during the operation of the device. In other words, the projections 15 rock in the seats, and thereby remain in engagement with the seats during the movement of the ratchet.

I In Figs. 6 to 8 a modified form of the invention is disclosed, in which provision is made for varying the fulcrum of the lever so as to vary the power as well as the operating stroke of said lever. In this form the increased stroke of the lever may be effected at the sacrifice of power, or at least the power will not be as great as when the lesser stroke is made. The difference in the stroke is effected by governing the distance between the fulcrum of the lever and the axis of the ratchet-wheel.

In the form illustrated in Figs. 6 to 8, 31 designates a pivoted standard having'an u per jaw 32, which straddles the hub of tl fe ratchet-wheel 33, one arm of the jaw supporting the lever 34, which is pivoted thereto. This lever is provided with a lurality of perforations 35 for the reception 0 the connecting portion of the dog, which dog is substantially the same in structure as the dog illustrated in Figs. 1 to 4, and said dog is here designated by the reference-numeral 36. 37 is a removable and reversible bearin which comprises a block having substantia ly

parallel arms

38 and 39 of different thicknesses, which arms are adapted to be inter osed between the arms of the rigid jaw on t e standard 31 so as to cause the arm to which the lever is fulcrumed to move away from or toward the axis of the wheel 33 the two positions being respectively illustrated in Figs. 6 and 7. In the position illustarted in Flg. 6 the fulcrum for the lever 34 is more distant from the axis of the wheel 33 than in the position shown in Fig. 7. In this position the connecting-bar for the dog is in the lowermost hole and nearest the fulcrum for the lever 34, so that but a slight movement can be imparted to the ratchet-Wheel at each swing of the lever; but a maximum power is provided on account of the lever-fulcrum bein far away from the axis of rotation of the w ieel. In the position illustrated in Fig. 7 the dog is in the opening most distant from the fillcrum-point of the lever, and the reverse position of the member 36 causes the fulcrum for I the lever to be nearer the axis of rotation of the wheel 33, so that a longer stroke of the lever is rovided, but less power is exerted on the siiaft supporting the wheel. It will therefore be seen that in the constructions shown in Figs. 6 to 8 the stroke of the lever andthe power can be varied to a considerable degree by changing the thickness of the insertible and reversible members 36 and the relative positions of the dog on the lever with relation to its fulcrum-point.

In the form illustrated in Figs. 6 to 8 the reversibility of the dogs is provided for, the T-shaped member 40 on the lever being substantially the same as the member 17 in the preferred construction, so as to permit the dog 36 to be reversed.

While this device has been described as being specifically adapted for use in'connection with the type of cold-tire-setting machine for which an application is now pendin and from which application the form of evice illustrated in Figs. 1 to 5 has been divided, it is obvious that the same may be employed for a multiplicity of purposes, and I therefore desire not to limit myself to any particular use, but reserve the right to apply it to any purpose to which it is applicable.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is

1. The combination. with a shaft, of a ratchet-wheel fixedly secured on said shaft, a

lever fulcrumed to one side of the axis of rotation of said'ratchet-wheel, a dog mounted on said lever, and means for varying the fulcrum of said lever; substantially as described.

4 2. The combination with a shaft, I of a ratchet-wheel fixed onsaid shaft, a pivoted ratchet-wheel fixed on said shaft, a pivoted standard below the axis of'rotation of said shaft and having a rigid-jaw, a lever fulcrumed to said rigid jaw toone side of the axis of rotation of'the ratchet-wheel, a dog mounted on said lever, and a reversible insert engageable by the jaw for varying the ful-- crum 'of thelever; substantially as described. 4. The combination with a shaft, of a ratchet-wheelfixed on said shaft, a pivoted standard below the axis of rotation ofsaid shaft and having a rigid jaw, a lever fulcrumed to said ri 'id jaw to one side of the axis of rotation o the ratchet-wheel, a dog mounted on said lever, and means engageable ver; substantially asdescribed. 5.. The combination with a'shaft, of a by the jaw for varying thefulcrum of the ratchet-wheel fixed on said shaft, a lever fulcrumed at its end to one side of the axis of rotation of said ratchet-wheel, a dog mounted on said lever above its fulcrumand for engagement with the ratchet-wheel, and means for varying the fulcrum of the lever to decrease the stroke and increase the power exerted by said lever; substantially as described.

- 6. The combination with an eccentric shaft, of a ratchet fixedly secured on said shaft, a lever, a'dog mounted on said lever, and means for decreasing the stroke and increasing the power exerted by said lever;

substantially as described.

'7. The combination with a shaft, of a ratchet-wheel fixed on said shaft, al'hand-lever fulcrumed to one side of the axis of rotation of said wheel, a dog pivoted on said handlever and having means for rocking in the recesses in theratchet during the rotation of said ratchet; substantially as described.

8. The combination with a" shaft, of a ratchetwheel on said shaft, a lever ful crumed adjacent to said ratchet-wheel, a dog on said lever, and means for varying the fulcrum of said lever; substantially as described.

9. The combination with a shaft, of a ratchet-wheel on said shaft, a hand-lever, and a dog pivoted on said hand-lever having lateral projections for engagement with recesses in the ratchet and having rotative movement in said recesses during the movement of said ratchet; substantially as described.

In testimony whereof I hereunto aflix my signature, inthe presence of two witnesses,

this 29th day of November, 1904.

. ISAAC M. HACKNEY.

Witnesses:

B. F. FUNK,

7 001m BADGER.