US1413272A - Resilient actuator - Google Patents

Description

E. B. HINE.

RESILIENT ACTUATOR.

APPLICATION FILED DEC- 1. 1921.

Patented Apr. 18, 1922.

INVENTOR wad/a? BY 1M ATTORNEYS I EDWARD B. HINEQ-QF LONGMEADOWQMASSACHUSETTS, nssrenon troornnnnr et BARKER MANUFACTURING COMPANY, v OF WEST srnruerrnnn, MASSACHU- SETTS, aconrom'rrou or MASSACHUSETTS.

nnslmnnr ACTUATOR.

Beat known that I, EDWARD B, HINE, a

citizen of 'the 'Unitedf States, residing at Longme'adom' in the county of Hampden and State"of'Massachusetts, have invented new f and useful Improvements in Resilient fication, 7 V I I e This,invention relates to improvements in mechanicjal'devices in the nature of a"resili= ent'actuator, such asrnay be'us'ed as a yield alo'learm orabutment on oneof twomovable members which intermittently engagereglster of the generalftype', disclosed in m pump structure.

totran'smit motion fromfone' to the other. ""While the invention is capable'ofjgeneral application, it finds one (advantageous use aspar't ofthe actuating mechanism for a.

copending application Serial No. 465,789

tion is a division;

fl'lhe object ofthe'inventionj is to provide 3 a resilient arm or abutmenhfwhichisadapt ed to be located in the path o'fa reciprocable me be i i c p e J [6f eingvleng g thereby on each stroke thereof, characterized in that i the arm is more" readily yieldable when engaged on one stroke or the member than on the other.

- Other'objectsan'd' advantages willfappear inthe following description and in the 'illus-" trative embodiment of the-invention in=the accompanyingdrawings, in which, Fig. 1 is a cross-sectional view ofaregister with which a resilient "actuator, embodyin fi my invention, is associated; v

h1g1f2-is a fragmentaryielevational view showing the interior'or" the reg ster; and

"'Fig. 3is a sectional view, taken on the line 3 3; of Fig. 1," showing the resilient actuator.

The invention is herein shown as associated with a register which is operated by the.

reciprocating piston'rod of a measuring and dispensing pump. "Theregister and pump mechanism are disclosed herein merely by way of'illust'rative example ofion'e of the many uses to which the invention maybe ,put and the-invention is entirely'independent cofthe particular details of the register and The'lat'ter will firstflbe described with particulanreference to Figs. l and The Specification of I.etters Patent. 5

i outer face of member 5 Actuators, of which the following is a specicooperatingth'erewitheratlng lever 13, which spring-'26 andi's prevented from Patented Apr. 18,1922 and this a lication filed eaaba register casing consists or two membersrf)" and16",' the formerhaving a peripheral flange tends between themembers" 5 and 61 On is visually graduated 5 shaft 11 is fixed; an escapement wheel 12 and 2 i is an oscillatable Op; 7 .5 fi ed'in erm di? ateflts ends to, a shaft 15 rotatably iinountfed in a hub l6 extendinglrearwardly from the casing member 55 5. lever 13 carry S-pins l6 which 'alterna'tely engage the teeth of the escapement wheel 12;

he arrangement is such that one" 'pin' 1- y entersa tooth space17 justibeforetheother V I v pinleaves another tooth'space. so thatat i filed April 30 l92l,f which this-applica-J etrograde movement, as' fan-as apr'edeterniined pointimaybe accomplishedlma'nu Q 1, aally turning ajh'andle 118; The teeth 19 have radial faces '20., and inclined races 211,; v i

like ratchet teeth, "to permit retrograde but notallow forward movement, 22, has] in its. inclined face" a 1 O t tha houlder'QS to limit the-retrogrademovement of wheel 12 andan adj acenti'tooth 24 is roundedg as; at

25, to aid in allowing the pin .165 toLlod' ge gainstshoulder' 23fand' perform func-f t1on.

The register casingis secured ,byscrews 35 to a'part jc ofthe casing of a measuring and dispensing pump, bjindicating another part'of such casing, 29 indicates a member recipro'cable with the pistonofithe {pump which carries one or more projecting pins {'or abutments 28,1any one or more of whic'h are'adapted to engage-an armor abutment on shaft 15 for the purpose ofrocking'lever 13 in one direction, return movement "Ofltlle or latteiabeing effected by a'spring ,QGL' AnyT one of the members 28 may move beyond :the

I arm onl shaft 151 and will therefore reengage' V the .arm on the return stroke tending to move first movement.

moving further in the latter direction by r ason of the v 9 I. le er 13 in a direct on opposite to 'thaAtQf-flm a V J Thelever 13, l pmj i 4 a the moyement-jca'u-sed y n-upstrokefif upper pin 16 engaging wheel 12. Therefore, the arm on shatt 15-must yield readily to permit-thedownward movement of pin;28. Also the stroke of pin 28 being greater than the stroke, or degree of oscillation, of lever 18, it is desirable that such arm be arranged to yield on an upstroke of pin 28 after lever 13 has moved the required distance, although the arm should not yield so readily as to prevent lever 13' being moved the full dis tance.

. To meet these conditions, I provide, as the armor abutment on shaft 15, aresilient actuator which is preferably constructed as best shown in Fig. 3; The, arm, or abutment, described consists of a projection 27 which consists of the free end of apiece of fiat spring'material 30. The latter is fastenedat its other end by inserting it in a slot 31 .(Fig. 1) formed in the endsof shaft 15 and a collar32 fixed to the latter. From its fixed end, the member projects radially outwardly from collar 32 and is then bent 'backwardly upon itself, extending in substantially parallel relation thereto and tangentially to upper portion of collar 32 be ond the latter, where it is again bent u on itself in parallel relation and extends across, beyond and substantially "tangentially to the lower portion of collar 32.

The practical result of this construction is, to provide a projection 27' which is yieldable when, engaged on either sidejby another projection, such as 28 but much less readily yieldable in one engage projection 27,'but the latter tends to bend from its point of contact with collar 32 and .ofie'rs considerable resistance to the projection 28. Itis intended that, under such circumstances, theprojection will not yield to any substantial-degree until the lever 13 has beenmoved, but as. soon as the latter is arrested, it can yield, it necessary, to permit projection 28 to pass it. On a return stroke of the latterythe projection 2'7 yields readily. to permit projection 28 to pass it,because it moves away from the collar and can open up. and defiectthe hitherto parallel portions of member 30 into diverging relation.

The invention has been disclosed herein, in an embodiment at present preferred, for illustrative purposes, but the scope of the invention is defined by the appended claims rather than by the foregoing description.

VJ hat I claim isp 1. The combination with two members both of which are movable back and forth and one of which is adapted to engage and move the other, of an arm on one of said members for engagement by the other, said arm being resilient and arranged to yield more readily when engaged in one direction than the other.

direction than the other. Thus on the upstroke of member 28,fit will 2. In combination, a driven member movable back and forth between fixed limits, a driving member movable back andforth through greater limits, an arm on one of said members with which the other member is adapted to engage and pass beyond on one stroke and reengage and pass beyond on a return stroke, said arm being yieldable when engaged on the first stroke after the driven member has been moved to permit the driving member to pass and more readily yieldable whenengaged on the return stroke.

3. In combination, a driven member movable back and forth between fixed limits, yieldable means for moving it in {one direction and holding it at one of its limits, a driving member movable back and forth through greater limits and by which on one stroke the driven member is moved infthe other direction, and a resilient arm on oneof' the members adapted for engagement by the other to move the driven member, said arm being yieldable after the driven member has moved to the other of its limits to permit the driving member to pass beyond and be. ing more readily yieldable when reenga-ged on the return stroke of the driving member.

4. The combination with. a movable member, of abutments provided on opposite sides thereof, a resilient element fixed to said member at one end, extendingacross andbeyond one of said abutments and'ben't backwardly to extend across the other abutment with the other end oftheelement projecting from the latter. r V l 5. The comb'na'tion with, two movable members of a resilient actuator on one end thereof having anarm portionadapted to be engaged and moved by the other member, said portion projecting to one side of its member and having another portion forming an extension thereof projecting to the opposite side of said member and a third portion connecting the second portion to the member, and an abutment providedon the'member to be engaged by the actuator when moved in one direction and engaged at a point between the. first and second po'rtions, said actuator when engaged in the opposite direction moving the first and second portions away fromsaid abutment. 6. A resilient actuator, comprising, anonresilient element adapted to be fixed to a movable member, and a resilient member fixed at one end to said element and having a portion projecting from one sidethereof, said resilient member being bent backw'ar'dly upon itself and to form a second vportion which extends across and to the opposite side of the element and contacts with the latter intermediate itsends, said resilient member being again bent backw'ardly upon itself to the latter intermediate its ends at a'point on said element substantially opposite to that at which the second portion contacts.

7 A resilient actuator, comprising, a mem- 5 her adapted for attachment to a movable member, and a resilient element bent into substantially the shape of a U With one side arm of the U extended and bent backwardly V EDWARD B. HINE. I

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