US542708A - Mechanical movement - Google Patents

Description

(No Model.)

W. s; JQHNSON. MEUHANIGAL MOVEMENT.

Patented July 16, 1895.

Wmme/a l l l SWW/lo@ NrTED STATES PATENT OFFICE.

WARREN s. JOHNSON, or MILWAUKEE, WISCONSIN.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 542,708, dated July 16, 1895.

Application filed February 8, 1895. Serial No.V 537,689- (No model.)

To @ZZ whom, zi may concern: l

Be it known that I, WARREN S. JOHNSON, a

citizen of the United States, residing at Miln waukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specication.

This invention consists in a novel mechanism or mechanical movement designed to convert or translate a relatively slow and gradual movement into a quick or sudden movement. y

The mechanism is susceptible of various applications, such as adjusting-signals, moving valves and dampers, shifting-clutches, 0perating photographic camera-shutters, and the like, and my purpose is to claim the mechanism broadly and apart from any other structure or device, and to make and sell the In many situations it is desirable or even essential to the attainment of a given result that one part or device be given a sudden throwfrom one to the otherlimit of its range ofl movement. On the other hand, it is often the case that the only available or convenient prime motor for imparting motion to such part or device isa slowly-acting motor, such as a piston, moving within a cylinder to which fluid under pressure is admitted quite slowly or a lever actuated by a float in a tank of considerable capacity. 4Under such circumstances an intermediate mechanism or translating device becomes desirable or even essential, and to meet this requirement is the purpose of the present invention.

It is to be understood that so far as the part to be actuated or4 controlled and so far as the particular prime motor are concerned, the embodiment of tiny-invention here represented is merely typical or illustrative, these `matters being variable at will or as circum-A stances require.

Referring now to the drawings, A indicates a base or back plate designed to carry the various parts of the mechanism.'

B indicates a yoke or forked bracket, to the arms of `which is pivoted a frame C, here represented as extending- `upward in a substantially-vertical plane above the pivot-rod d. Anv arm b extends downward below the pivot-rod a, and is provided with a stud c to enter one end of a spiral spring D, the oppo-J site end of which rests against an adjustable nut E, vscrewed upon 'a threaded stem or post F, projecting from the back plate A.

The spring D tends to throw the upper end of frame C inward or toward the back plate A with a force dependent upon the adjustment of nut E. l

G G is .a toggle, the upper member G of 'which is pivotally carried by`a cross-rod CZ at Or near theupper end of swinging frame C. The lower member G' of thetoggle carries a vcross-rod e, the ends of which are shouldered or reduced and extend into slots or elongated openingsf in the side bars of frame C.

H H indicate two helical springs, each attached at one end to cross-rod d and at the other end to cross-rod e, and tending constantly to draw the latter toward the former.

From what has been stated it will be seen that when the toggle GG is straightened, so that the pivot or joint connecting its two members is in alignment with the cross-rods CZ and e, said rods will be separated to the greatest distance practicable, and the springs H H will be elongated and put under the greatest tension possible under the described arrangement of parts. lt also follows that if the joint or pivot g of the toggle passes to either side of a straight line connecting the crossrods d e the springs H H will immediately draw the crossrod c toward the cross-rod a., and thereby bend or bow the toggle until the tension of the springs is taken up or a stop is encountered.u

The upper member G of the toggle is extended above or beyond the axis of its pivot d and is preferably fashioned into a fork j, as shown in Fig. l, the arms of which are provided with inwardly-projecting studs, astshown. These studs enter a circumferential groove in a block or nut I, carried by a rod or stem J, which is guided in a neck or boss projecting from back plate A and is capable ot' a limited longitudinal movement.

n the drawings I have represented rod J as provided with a boss or stop h tolimit the movement of the rod in one direction, its reverse movement being restricted the nut ro I. By adjusting the nut upon the rod J the range or extent of movement ot the rod canbe regulated and determined,

Rod J may connect in anyconvenien't manner with or may be an integral part ot thede vice or member requiring the quick throw,

and, in; fact, is` often m adel the steinfof;yx a vahvet,

The throw or play of frame @ly isinegulated and cerer-minedbirstepenntS-K and Liscnewed l upon a threaded postor stem; M5 projecting zo from the back platemasishownin the; several figures.

Eer the. punpose oli actuating the djevice; L have rer-resented in- Figsv L and, 2: een dwiskfor headl Ni, carried by frame,V G, and rest ing-upon a exl'ible diaphragm- Oficonstiwt.-

in gone walh ofy a, timidi-.pressure champ l?. Chamber l? issufpiplied with; fini-df OI Miki@ under pressure, which ente-rs, by a quite re stnietedpassager', and consequeutlyftheitllf 3o ing of the chamber-r is gradual and the mover,A

mentofy head N and frame. C produced by 1 the fluid-pressure behind the. dfigkaphragrni Q- wilfl; Likewise; be. gradual orA comparatively l slow. The same is true where acyljind-ery and piston are substituted; for the` flexible diaphragm, as in Fig. Standl so, ot many other actuating devicesithat may be employed.,

'Assn-mingtg-hat the partisbe inftheA position indicated in Figs, L and 3*, which; isi the pest,

4o tion they assume,when` notoizceis actin g1 upo n frame C tothnow it outward,Uherodorstern J, beingtheniat thelirnit-,oii its onL ward EnQMeuntil, carried just beyond thisA4 plane the2 tog gle G; G extends spnings H: ihhut theiinstant,

5 5 thatplaneis:passedsaid spningscontract, dfraw thei'crossfrod; e upwardvandi `now the. toggle outward,4 as, in Fig. 2, and;r in doing sol thnowtheL fork` j, quickly inward. to, the.y tull( limitv of inovementpermittedbynut orablocl; I'. 'Ihus 5o avery gradual movement of theftgrame@ and; of the motor which actuates it is translated into-` a quick and positive movementot the stemt J and` of; anyl part tonmed withL onca-nried'Y by it., 0n theotherv hand, iftiltevstell-` L 106.2112.

theinner limit of itsthrowor movement-as inl Fig.l inwhich. case thenut I? will bear against the end of the guidingfboss of stem J, the yoke or fork j willA bear against the nut and be thereby held at rest. If, now, the fluid Within chamber P be' allowed to escape slowly, the spring D, acting upon frame C, will gradually swing it inward to the position indicated ifn- Fig'. 2, but as the f'orkj is prevented by the nut I from moving bodily inward with the trarne the member G of the toggle will be caused to rock upon its pivot d and to swing the two members of the toggle into line and ,y thenpast theplaneof pivots d e. When this plane is passed the toggle will be quickly `lbowedinward, andistem J will be thrown sudfdenly outward to the limit of its movement. Precisely the saine action takes; placewhen a l cyljigndzQ-I and; pis-ton; are employed, as in Fi g. 3. i t-let have repnesented thestem J as pro- V'dged with, astop he, and thenut I- as-arran gedtohear aaai. st theenfff 0.1;* the neck or boss in w ich,- steing J; isiguildemit; is tobeunderstood that these merelyI typicat or illustrative `tot stops generally, which may be applied to, T any part connected withl Stem.. The dimensions and the relative propertijous ofI parts, 't2-hein shape, on configuration and; like matters, may be variedas desired fwithout departing from the spirit and scope ot? my invention, Eheiyoke 71 maybe-replaced by anyequi-valent means ot? connection.

Har/ins thus described my invention, what 11i elairn isrf 1. AA mechanical movement comprising the ollowing elementsin combination:` a swingnsftramei means tee meving said trame-,51 a

toggle carried.e by Said traine. and' having 0n@ member pivote@ and. the; other arranged t0 3 slide therein/'a devieetotbenioved; aconnecition betweeufthe tessleand said device; and a spningconfniected wfithi and serving.- to bowthe wagte 2. ling cernfbinationI withla movahl'efd-evice-,as J, provi.ded z with stops toV determine itsrange of; movement, mechanism ton igmpart-ingasud'- den movement thereto in; opposite, directions, consisti'ngy ofa, swinging frame, meansifior i movin gsaid fname, aftoggle having one memfber pivotally, atta/c1411edl to andtheother arnangedito slideiul said fran1 ea spr-ingenunectiedgwith and tending to; bowV the toggle,-

andai connectiony between the tog-f ,flev and the device tothe moved, substantially asset forth. 3; In combination wit-h aA movable device as Jf, having.f a, restricted: range of movement, mechanism fon moving the same, suddenly iny `gone and the other directiomconsisting of a iswinging trame, a motor iion moving said traine, toggle.- hailing; one of its members piuoted; in said; trame and connectedvwirththe ,part todos;r Inoued, and having; its other mem-v ber arrangedg to slide in thel swinging frame, andaspning connected with and: servi-ng to ,i bow the toggle. A

4-.-. Int combiinationfwfith a m'emberhaving a restricted ran ge of movement,k asy J a-nd; with aprimemotor as-N, @,P, a translating device IOO IIC

interposed between the member to be moved and the motor, and comprising a swinging `frame C, a toggle G G' carried therein by pivotal connection d and sliding connection e, a yoke] extending from the toggle to the member to be moved, and a spring H connected with and serving to bow the toggle when its three pivots are thrown out of alignment.

5. In combination with a member as J, having a restrict-ed range of movement, a swinging frame C, stops to limit the play of said frame, a motor for moving said frame in one direction, a spring for returning said frame,

a toggle carried by said frame and having its members respectively connected therewith by pivotal and by sliding connections, a spring acting upon and serving to bow the toggle, and a connection between the toggle and the member to be moved;

In witness whereof I hereunto set my hand zo in the presence of two witnesses.

WARREN s. JOHNSON.

Vitnesses: v

PAUL F. JOHNSON, L. F. FISH.

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