US2371464A - Machine for bending articles - Google Patents

Description

March 13, 1945. o. J. E. OLSSON MACHINE FOR BENDING ARTICLES Filed Sept. 15, 1941 4 Sheets-Sheet l luvs/woe Oaov J. E. 01.550

- March 13, 1945. o. J. E. OLSSON 1,

MACHINE FOR BENDING ARTICLES zNI/ENTOE 01.011 .15. OLsson y 1d. #WM- #71 TORNEY 0. J. E. OLSSON MACHINE FOR BENDING ARTICLES March 13, 1945.

Filed Sept. 15,, 1941 4 Sheets-Sheet 5 March 13, 1945. o, QLSSON 2,371,464

MACHINE FOR BENDING ARTICLES Filed Sept. 15, 1941 4 Sheets-Sheet 4 I flvvnvrol? OLOV Jtz'. 01.550

Patented Mar. 13, 1945 V UNITED STATES PATENT OFFICE 2,371,464 l MACHINE FOR BENDING ARTICLES Olov J. E. Olsson, Minneapolis, Minn, assignor to i -:i

Storm Manufacturing Company, Inc., Minne-v apolis, Minn, a corporation'of Minnesota Application September 15, 1941, Serial K01 110306 ,(ol. 15a-4s) V 5 Claims.

' This invention has relation to a machine for bending articles, such, for example, as the con-- necting rods of the engines of automotive vehicles. The machine of the application is adapted for operation upon articles of a great many different varieties. The invention herein presents a machine including mechanism adapted to be operative upon articles to cause them to be straightened, or otherwise shaped, thus to be accurate for their intended purposes. The word bending as i above and hereinafter used is intended in abroad sense, as including twisting, straightening, etc.

An object of the invention i to provide a ma chine for bending articles which will be of novel and improved construction.

the. base plate of the machine and entities assembled and/orjassociated with said base plate; and

'Tis an enlarged horizontal sectional view, 7

taken substantially-as on line 1-'| in Fig. 4.

With respect to the drawings and the numerals of reference thereon,.l represents a base plate of the machine adapted to rest upon a support, such as a table or bench, so that a continuous, flat upper surface l-lof said base plate is desirably disposed in a horizontal plane;

A main frame I2 01' the machine is supported upon and secured to an end portion of the upper A further object is to provide a machine of the'present character which will be an improvement generally over more or less similar machines and wherein will be incorporated various improved features and characteristics of construction novel both as individual entities of the ma I chine and in combination with each other.

And a further object is to provide a machine for bending articles of construction a hereinafter explicitly set forth. I With the above objects in view, as well as others which will appear as the specification proceeds, the invention comprise the v construction, arrangement and combination ofparts as now to be fully described and as hereinafter to be specifically claimed, it being understood that the disclosure herein is merely illustrative and intended in no way in a limiting sense, changes in details of construction and arrangement of parts being permissible so long as within the spirit of the invention and the scope of the claims which follow.

In the accompanying drawings forming a part of this specification,

Fig; 1 is a front elevational view, partially in cles made according to the invention;

surface ll of the base plate [0, as denoted generally at l3, and saidmain frame-l2 ext'endsupwardly from saidbase plate.

The main frame I2 includes a well 14 therein and'supports a" hollow cylinder, designated generally at [5. The well I4 is adapted'to'contain a liquid,'such, for example, as'oil, and the liquid is adapted to pass between said well and the hollow cylinder l5 through suitable openings, me manner to be set forth. I

Said hollow cylinder is constituted as an outer shell I 6 and'an' inner shell ll snugly fitted into said outer shell. The lower end l8 of the inner shell [1 is disposed in an annular groove Fig. 2 is an end elevationalview of the machine as it would appear from the right side of Fig. 1;

Fig. 3 is an enlarged vertical sectional view,-

taken substantially on line 3-3 in Fig; 1, detailing features of the machine and omitting the base plate;

Fig. 4 i an enlarged vertical sectional view, taken substantially on line 4-4 in Fig. 2, at right angle to the disclosure of Fig. 3, omitting the base plate of the machine; I

Fig. '5 is an enlarged fragmentary plan view,

partially in section, of the machine, omitting its base plate;

Fig, 6 is a reduced fragmentary plan view of I9, provided in a surfaceof' the main frame l2 opposite the base plate l0, against an annular gasket '20 seated at the bottom of said annular groove Ill. "The outer shell lBincludes an internal annular shoulder 2| at its upper portion, and the upper end 22 ofsaid inner shell I! i disposed against an; annular gasket 23 seated between said upper end 22 and the internalannular shoulder 2|; The construction and arrangement are such that the internal surface of the portion of the outer shell it above its internal annular shoulder 2 l I and the inner surface of the inner shell I! are in a single, continuous circumference which defines the internal side wall of the hollow cylinder I5 and'that asurface of the main frame '|2, surrounded by the inner shell l-I, defines the base of said hollowcylinder. The construction and arrangement are also such that the lower end of the outer shell It is in spaced relation toan adjacent about the outershell l6 and embedded in and passing upwardly through alower portion of the mainframe l2, are adapted to be turned home in the lower end portion of, said outer shell to cause the outer shell to be forced down toward rial, for precluding the passage of liquid or oil past the ram.- The packing entity 25 is held in fixed position by a hollow 'pin 21, screwed intoan opening 28 disposed centrally in the lower end of the ram, and a controlled bleeder outlet-2'9-irom the opening 28 is for removal-of air'wljich'might possibly become entrapped in. the'system of the machine. A flow back line 30,extending between an upper portion of the hollow cylinder I5 and the well [4, is for conveying liquid or oil from said hollow cylinder back to said wellshou-ld any liquid or oil at some timeorotherpass upwardly along the side wall of the ram 25. Said ram-25 is adapted to be raised-or actuated by a mechanical lift ior rapid movement. of the ram to work to be performed, and the ram is also adapted to be raised or actuated-in response to the pumping oflflu-id or .oil into the hollow cylinder l5 beneath therama V The mechanicallift for said ram 25 includes an upright post 3i secured, asa-t 3 2, to anupper portion of theram anda vertical-rod 33 removably screwed as at 34, into the upper end of said post SIWAnupperm rtion of the, vertical rod 33 passes. freely through a vertical guideway 35 for said vertical rod disposed in an overhanging su-pport36 upon the .main frame of the machine. .An actuator 3.1 for theram is'constituted-as a substantially L-shape lever having one of its arms pivoted, .as at 3 8, upon' a portion of the main frame 42 at a side or and abovethe overhanging support 56 and the other-of its arms pivoted-as at 39, to the upper end of the vertical ,rod-33.

Evidently the ram 25 will be elevated in response to upwardswinging movement of the;.-actuator 31. -A fluid passagewayy lflgbetween the well 14 and the hollow cylinder 451s controlled by a gravity actuated-check valve 44, within-a concavity belowand contiguous vvi-tl'i said hollow cylinder, adapted tozpermit flow of fluid :01: oil from said well iIlOfthe-hO110W;Cy1i1'ldEr. but to preclude flow from said hOIlGWiCY-lil'ldflf'bflCk into saidwell. I v

A pump cylinder 42 of-the machine, which is screw threaded, as at 43, into an end portion of th main frame 42, extends upward-y fromsaid mainframe at a side of the hollow cylinder 15, and an upright pump plunger--44 .is slidably fitted to -said pump cylinder. A pump chamber within the pump cylinder beneath thepu-mp plunger- 44 is denoted 45, and a packing gland-within the pump cylinder and aboutsaid pump plunger is designated 46-. A fluid passageway 4.1 between the well l4 andthe pump chamber 45 is controlled by a horizontally movable checkval-ve 48 held in operative relation to its seat b-y a threaded plug. 49, and a fluid passageway 511 between the hollow cylinder 15 andsaidpumptchamber fi is controlled by agravity actuated check valve-5iwithin a concavity beneath .the pump chamber and rested upon a cross vmeinber 5'2. The check-valve 48 is adapted topermit flowof fiuidor oil --from, the well l4 into the .pumpfchainber '15 audio pre clude flow from said pump chamber back to said wen, and the check valve '5] is'adapted to-permit Upon elevation of the ram 25 by upward swinging of the actuator 31, fluid or oil will be drawn from the well I4 through the passageway past the check valve 4| into the hollow cylinder l5,

and upon release of said actuator said ram will be prevented from returning to a depressed conditon because the fluid 'or oil'which has entered said hollow cylinder will be precluded from flow- "ing out of the hollow cylinder by the check valves -4l-and 5!.

The ram 25 is adapted to be elevated by ma- *nipulati-on-of-the actuator 31 to cause tools of the machine to engage against work to be performed,

-"and 'aftersaid "ram has been mechanically elevated,-the pumptplunger 44 is adapted to be actuated to cause fluid or oil from the well M to be forced under pressure into the hollow cylinder l5 beneath said ram 25.

v -Mechanism for actuatingsaidpump plunger 44 is constituted asapump handle 53 having .one of its ends pivoted, as at 54, upona link .55 itself pivoted, as at 56, upon the main frame 12. An intermediate port-ion of the pump handle 53 is pivoted,as at 51, upon the upper end portion of the pump, plunger. The pump plunger 44 is elevated upon upward swinging movement of the pump handle Hand is depressed upondownward swinging movement of .said pump handle. On its upward, suction stroke said pump plunger '44 draws fluid or oil past the. check valve 48,- the fluid or oil travelling. from the well l4through the passageway into the pump chamber -55. On its downward, pressure stroke, the pump plunger forces fluid or oil from said pump chamber through the passageway 50 .past the check valve 5| into the hollow cylinder -15, thus to create a lifting pressure beneaththe ram .25. The check valve 48 is in seated position throughout the downward, pressure stroke of the pump plunger 44, and the check valve 5|. is in seated position throughout thetupward, suction stroke of said pump plunger. Pumping of. fiuidtoroil into the hollow cylinder l5 beneath the ram 25 is accomplished by oscillation of the pumphan dle 53 which causes the pump plunger ;44 totb'e reciprocated vertically. v

The portion-of the .hollow cylinder 15 beneath the ram 25 is in communication with an ordinary or preferredtype of pressuregage 58 byway of a port59 leading from said hollow-cylinder :directly to said pressure gage in such manner that pressure inlthe hollow cylinder will be accurately registered at the pressure gage. Pressure in the hollow cylinder 15 is adapted to be manually released and the ram .25 is adapted to be allowed to drop after a desired andpredetermined pressure has been registered at the-pressure gage 58 during practical operation of'the machine. A passageway'fifl leads from a portion of the hollow cylinder l5 at loca'tion'below the ram 25 to a valve cage fil screw'threaded, as atifl, into the main frame 12, anda horizontally movable check valve .63 within'saidcage :6! :isadapt-v ed to control flow of fluid or oil from said hollow cylinderto the well l4. Thecage 6| includes a longitudinal opening. 64 defining avalve seatr for the check valvev 63, and a cross member'ili in said cage is for retainingsaid check valvefia in adjacent, operative relation to said valve seat. The passageway 50 visada-pgted to communicate with the longitudinal opening 64 of the valve cage 5 I when the .checkvalve 53 isin unseated relation the outer portion of; said longitudinal opening 6.4 1

closed. The outerportion'of-the actuator screw 68 is situated to be accessible at a side of the main frame, and a finger piece 1| upon; said actuator screw :is for readyturning manipulation thereof; An inner-end portion. of the actuator screw 68 isof reduceddimension and is situated within the longitudinal opening '64 at location adjacent the check valve 63, betweensaid check valve and thelateral openings 61. The construction-an'darrangement ar such that thereduced innerend'portion' 12 of said actuator-screw 68is in spaced relation to "the bounding wall: of the longitudinal opening 64 thus to 'oiierno hindrance to theflow of fluid or oil from-the passageway 60 to said'lateral openings 61 when the check valve 63=is in open condition. Whentheactuator screw 68is adjusted to outward, receded po'sition, -as in Fig. 5, said check valve 63- is held'againstthe valve seat 65 by pressure of fluid or oil'within the hollow cylinder 15 thus to preclude passage of fluid or oil from saidhollow cylinder to the well 14. To release pressure in the'hollow cylinder 15 said actuator screw is turned in direction to be moved inwardly to cause th check valve-63 to'be forcibly removed from the valve seat 65. and with movement of said check valve 63 to open condition the ram can become depressedby forcing or the "fluid or oil out of the hollow cylinder" I5 by way of the passageway 60 "and the valve cage lil'into thewell l4. Astop 13 upon the main frame [2 adapted to be engagedbythe finger piece "H is for limiting the extent to which the actuator screw 68 can be turned inwardly; Upon adjustment of the actuator screw to outward, receded position after the ram has become depressed, the checkvalve63 will be free to return to seated position andwill, evidently, become engaged against the valve seat 65 under pressure of'fiuid or oil in the; hollow cylinder'l5 immediately upon'the passage ofgfluid or'oil into said hollow cylinder during the immediately'succeed ing elevation of the ram 25 inthe mannerashere inbefore set forth. v j

A safety device of the'machi'ne for limiting the amount of pressure which can exist in the hollow cylinder l5' beneaththe ram 25 is represented generally at M. The purpose of said safety device .'!4 is protection of the operative elements or parts of the machine against liability of damage. Ailtubular element 15 of' the safety device is threaded, as at 16,. in the main frame I2, and a cap member 1! may desirably enclosethe outer end portion ofv saidtubular element. As dlsclosed; the cap member 11 is threaded at 18 upon thetubular lemerit'lfi. A thrust element 19 is adjustablydispos ed within and closes the outer end portion of said tubular element .15, and a valve member--80 is slidably disposed within the innerend portion of thetubular element. Thevalve member 80 is rigid with a. flanged pin 81. which is slidable within said tubular element, and .a coil spring 82 seated between said thrust element .19 and said flanged pin 8| normally. .re-' tains; the .fianged ;pinunder: resilient pressure against the internal annular sh0ulder831-by thecoil spring 82 the valve member will be in closingrelation to a port, or ports, 84 in the inner 'endportion'of the tubular element 15 leading from the interior of'said tubular element to the well I4; .1 See-Fig. 4. A passageway leads from aportion'of the'xhollow cylinder [5 beneath the ram v:25 to'the-in'ner end portion oi'the-interior of the tubular element 15, whichhasthe' valve member 80. The coil's'pring82 is adapted to withstand apredetermined and intended amount of pressure within the hollow cylinder l 5 without collapsingand :to collapse when said predeter mined-and intended amount of pressure is'ex'- ceede'd. Of course, said coil spring 82 is subjected to the pressure within said'hollow cylinder l5 through theinst'rumentality of the valve member 80 and the flanged pin 8|. The construction and arrangement are such that with collapse of the coil spring 82, said valve member 80 will be moved within the tubular element 15 by the fluid or oil under pressure within the hollow cylinder to position uncovering the port, or ports, 84 and afford-' in'g communication between the passageway 85 and said port, or ports,'84. That is, with collapse of the coil spring 82 the hollow cylinder I5 is caused to'becoine open to the well M, by way of the pasageway 85 and the tubular element 15, so that'fluid or oil will be caused to flow from said hollow cylinder to said well and pressure within the hollow cylinder will become relieved. V

ing across the upper surface of the ram 25, swing .ably'or rotatably supports a rocker member 81.

As disclosed, the lower surfaceof the rocker member 81 includes a part-circular projection 88, desirably at the midlen'gth of said rocker member; which is oscillatably mounted in the depression or socket 86. The rockermember 81 is of general rectilinear configuration and its upper surface adjustablysu'pports a. plurality, two as shown, of rocker jaws 89. That is, the rocker jaws 89 sup-. ported upon the upper surface of said rocker member 81; are mounted for adjustment in direction'away from and toward the location of the part-circular projection 88, thus to be capable of being situated at-any positions relativelyto an article to be operated upon in the machine which may be selected. The rocker member 8! can support morethan two rocker jaws, and the rocker jaws can be of any type suitable to their purposes. I

89. The shank of the tool 9| is disposed within:

the concavity 90 and the head of said tool isfixed up against the fiat lower edge 92 of the over-,

hanging support 36' through the instrumentality of a flat plate 93 rested upon the flat upper edge of said overhanging support, a reduced, threaded extension 94 of the tool shank projecting upward 1y through said'flatjplate, and a nut 95 upon the threaded extension 94 and turned down against the flat plate 93 Stated differently; the

the machine, .assmningithef'ramtto'tbe depressed,

said ram 4 is first aelevate'rl :by upward movementof theiactuator :31 atozcause the work to be engaged bmandabetween .tne -worlcing ribpr element-=96, .abovmsaidvwork, iand thezrockerziaws 89, .-89,-:belowfthe"work. '-.'I?hen;:-the;.pump handle 53sisoscillated toz'cause liitingmressureito be -applied in the hollowlcylinder s t5 against the-lowcr surface of the ram. Whenebendingi of: thearticleis completed, .byappl-icatiomofi the: lntendedspressure, indicated at=the pressure gage 158, thmactuator (screw -58 is adjusted inwardly of the main frame, by turning movement of said actuator screw, .to' cause the check valve 631w become removed from the .valve :sea-t s. 65; so .that i the ram 25 can return by gravity cr-byidownwardswinging of the actuator a'l to adepressedecondition. During .thewaccomplishmentaof a bending operation. upon an. article; the-actuatorscrew 681 must, naturally, be .-in receded iposition, -.as .in Fig. -5, topermitthecheck -valve-'63 to engage the -valve seat -65.

An auxiliary =frame of -.the machine eonstituted asian elongated bar or support-alihaving one of its endgportionarigi'dly mounted or supported, asat 98,? in .a projecting portion 299 of the base plate in. Thmrdieting.portionfidis in theplaneof andat-the front of said .baserplate f, directly forwardlyof lthesmai'nlframe l 2, .and said projectingportion retains lthe elongated bar or support .81 so that this .eiitendsalonglandsad jacent "to the forward vedge .ofth'e base {plate l I?" inthe planeofsaidbaseplate. -The endportion of the elongated .bar or support 81 which is spaced fromlthe projectingflpontion'of the base plate f0 extendstto position, as disclosed, which-is considerably "beyond .the end of .said lbase .plate spaced from, .or opposite, said main frame 12. Also, said elongated bar or support T51 is as shown disposed at fthe side of lthe main frame.

having the pressure- .gage 158.

i A stationary cen'terihol'der rum rests upon the projecting .portionffi oflthe'base plate l-latllocation directly above the adjacent -vend ,portiomof the elongated bar .or isupportffil, and .saldstationary center holder is ifastened (down against and made rigid twithasaid ,projecting.portion-by screwbolts III I which .are embeddednin and pass upwardly through Itheprojeoting-portiori and enter the Stationary centerLholder lthrough its lower surface. Astationary center I112 issuitably and conveniently 'fixed, as at [03, in the stationary center holder [00 to Ibe parallel with .the elongated bar' or support ".91, and. .the working -or pointed portion riffthesstationary center projects in direction toward the endo'ftsaiwelongated bar or support which '.is opposite the proiectingsportion 99 and the mainframe i -2.

An adjustable center .holder "14 lis nrourited upon a,portion .of .the elongatedbaronsuppont fl at location spaced .from the stationary center holder .i'UD. Said Ladjustable center -holder is adapted to?becslidllongitudinallyiof saidtelongated' bar for.support and tube Tfixe'dmpon the bar or 'sdpportfidt selectedadjusted-position. meme atedupon the eicngated barorsupporflror sliding movement, and the construetion and arrangementsarezsun tnat saidadjiistabi center hoider is nxed against ttlrnifig ortwisti-rig movement relatively to said bar orrsupport. rset-screws l-ot are-tor Faxing-said adjustable tcente'riholder 404 at adjusted position upon the elongated bar 1 or lietirieen"thecenters l02' and l l8 to be-testedin aJmanner-to-bemade: plain. To the end that an article can :be removably supported by said centers, the movable icenter 1.08 is =slidabiy disposed within the hollow z porti'on 1:01 of the adjustable holder I'M for movement away from and toward the stationary-centerI-OZ. ssaid movable-center is manually -actuated to I receded :position :when

an =-artic1e a'to Joe 1 tested is to 1 be placed "between the-centers, -andis -allowed :to move .co engaging relation against the-article==after-p1aced between the centers. 'A -limitv-piece 409 is suitably -and conveniently fixed within :the end of :the hollow portion 4010f the movable center I08 which-is opposite a the stationary center I02 and. the rear end portion "of =said -movable center :slidably disposed in said l-imit piece. The front end eportionofthe movable center is enlargedto provide an annular shoulder I l 0 of-sai'd movable center spaced ,from and facing the limit piece l-09,-and a coil spring 1 ll v situated within :the-' hollowportion I01 isseated-betweensaid limit-piece 109 and a the annular shoulder'l'fll. T-he COiLSpring-[H resiliently urges the-movable centeri0 8 in direchon-toward the stationary center lfl2, and an Llever if [2' is adapted to be manually actuated to cause said .moyable center to he slid in -the hollow aportion [0! Lin direction away "from the stationary =center 102. As disclosed, an intermediate. portion l of the L'-1ever l l 2 is pivoted, as at "fl 3, upon the adjustable centerholder lfll, and a bifurcated arm H4 of v-sai'd L lever is engaged about the movable center 1'08 .in'lfront 015 a crosslpin "HS' in 'the adjacent endiportion of said movable center. By downward swinging movementoffthe L-l'ever 'fl2the movable center is slid'to rece'dedjposition against the resilient actioncr theco'ilspring r fl and upon releaseo't said L lever "said "coil spring acts to cause the movable center to "be TprojectedToWa-rd the "positicn 'as disclosedin Figs. *1 and 6. Whensaiii movable center is projected to the position as in said Figs. 1 "and *6, -tne' bii'urcatedarm I t4 la resiliently retained against the adjacent end "'61 the adjustable eenter holder I I M by the "action of the coil sprin g upon"the cross pin H5, and said cross pinfby reasonits engagementa'gainst sald bimr-ddfied arm, limits the extent tdwhich the movable :center eanhe "slid in direction "toward'itire stationary eenter. 4

:' indicator :support m .is mounted upon a portion =of the lelongated war :or support 81 nt.

location between the stationary "center iholdcr:

m and the adjustable center holder m. 'Sai'd indicatorjsupport I I6 is adapted'to be moved longitudinally of said elongated bar or support and to be fixed thereon at'seledted adjusted position, closer to or farther away from the center holders; I and I04; respectively. To the end that the indicator support IIB can b'e"mo'vable along the elongated bar or support 91, said indicator support includes a lower portion thereof slidably situated upon said elongated bar or sup upper part thereof which as disclosed extends" away from the indicator bar o'rsupport'in direction toward the base plate I0. 1See Figs. 1, 2 and 6. The horizontal extension' member II8 includes a plurality, three'as disclosed, of vertical openings, each denoted I I9, spacedapart longitudinally of said horizontal extension member," andthere is a horizontal opening I20 contiguous with-each vertical-opening II9.- The'vertical openings are for the selective reception of an" indicator supporting shank I2'I, and said indicator supporting shank is adapted to be retained in fixed position in any selected one of the verti cal openings I I9 by a set screw I22 locatedin" the horizontal opening I20 which is contiguous with the vertical opening containing the indi-fj cator supporting shank. Said indicator supportingshank extends upwardly from the horizontal, extension member I I0 and is desirably disposed in a substantially vertical position.

An indicator I23 is rigid with a supporting arm I24 for said indicator, and saidsupporting' arm I24 is mounted upon the indicator supporting shank I 2| for movement longitudinally there-' of.- More explicitly, a-clamp I25 fixed to the supporting arm I24 encircles said indicator supporting shank I2I, and a knurled finger piece I26 is adapted to be adjusted to selectively secure said clamp in fixed position upon the indicator supporting shank or to cause the clamp to be released so that the supporting arm I24, with the indicator I23 thereon, can be moved upwardly or downwardly, away from or toward an article or piece of work situated between the centers I02 and I08 in position to be tested. A manipulator I21 of the indicator I23 extends downwardly therefrom, and a pointer I28, suitably and conveniently operatively connected with said manipulator to be actuated thereby, is visible from position above said indicator.

The testing of the accuracy or other condition of an article or piece of work situated between the centers I02 and I08 is accomplished by movement of the indicator I23 along the vertical supporting shank I2I toward the article or piece of work, so that the manipulator I21 of said indicator engages the work, and reading the result at the pointer I28. Stated differently, to the accomplishment of testing, the manipulator I21 is caused to engage the piece to betested, and the result of the test is readable at the pointer I28. The several diiierent vertical openings H9 in the horizontal extension member I I8 of the indicator ing. In the disclosure as made, the indicator I23 is directly above the elongated bar or support 91.- By shifting of the indicator supporting shank'l2l" to the next adjacent vertical opening I I9, said indicator will become'situated at the inner side of' said elongated bar or support, and by shifting of said indicator supporting shank to the opening H9 at the free end of the horizontal extension ,member N8, the indicator will be situated still. further inwardlyof the elongated bar or support; The horizontal extension member of the indicator support is mounted to be situated above the base plate I0, andthe supporting arm I24 for themdicator I23 is adapted to be swung about the indicator supporting shank I2I as an axis, so that an article to be tested, instead of being supported between the centers I02 and I08, 'can be rested" upon the base-plate I0 to beengaged by the ma-f nipulator I21 of said indicator I23. That is,'the

indicator I23 is supported to be capable oftesting articles while resting upon the base plate I0, as

well as when supported by the centers I023 and "The machine as illustrated and described-has" been found to be practical and eflicient injoperation. The bending entities of the machine per-f form their intended services in'entirely satisfactory manner, and the pressure gage 58 constitutes a ready instrumentality for indicating that a strumentality for testing the accuracy or other condition of articles. The'testing mechanism and the bending mechanism are setup and related to each' other and to other. instrumentaliti'es of the machine so that successive testing operations upon different articles after operated upon in said machine arev capable "of being performed with-'- expenditure of but a minimum of time. What isclaimed is; x

an element for operating upon said article in cooperation with the tool first mentioned, a vertically movable ram carrying said supporting tool, a cylinder in which said ram is movable, a well for fluid, a passageway for fluid between said cylinder and said well, a mechanical lift for causing said ram to be elevated and depressed, said mechanical lift being adapted to be actuated to elevate the ram to bring said tools into cooperative engagement with said article and to draw fluid from said well through said passageway into said cylinder beneath said ram, means for normally precluding the travel of fluid from said cylinder support I I6 are provided to the purpose that parts through said passageway to said well, a pump plunger, means for reciprocating said pump plunger, hydraulic means responsive to reciprocations of the pump plunger for elevatin said ram to cause the tools to accomplish a working operation upon said article, and means for opening said passageway for fiuid to permit said ram to become depressed thus to remove said tools from cooperative engagement with said article.

2. In a machine of the character described, a supporting too] including an elementfor operating upon an article, a complemental tool including an element for operating upon said article in cooperation with the tool first mentioned, a vertically'movable ram carrying said supporting tool, a cylinder in which said ram is movable, a well for fluid, a passageway for fiuid between said cylinder and said well, a pivotally supported actuator for causing said ram to be elevated and depressed, ,said actuator beingadapted tobe op-- erated to elevate the ram to bring. said tools into cooperativeeng'agement. with said-article and to draw fluid from-said well through said passage-- way into. saidcylinder-beneath said ram, meansfor normally precluding the travel of fluid; from said. cylinder through said passageway-to said well, apump plunger, means for reciprocating: said pumpplunger; hydraulic means-responsive to reciprocations oi the-pump plunger for elevating; said-ram to cause thetools to accomplish a in cooperation with the: ;-tool first mentioned, a-

vertically-movable ram carrying said supporting tool a oylindenin whichsaid ram, iszmovable, a.

well for fluid,-,a passageway for-fluid betweensaid cylinder and said well, a mechanical lift ing an element for. operating; upon said. article in. cooperation with th tool first mentioned, a.

vertically. movable, ram carrying said supporting:

tool, a-cylinder. in which saidramis movable a well torafluid, apassageway for-.fluidhetweeu said cylinder and saidwell, a. pivotally supported actuator connecteddirectly to said ram for causting. saidram to be elevated and. depressed, said.

actuator being adapted to beoperated. to elevate. theram to bring. said tools .into cooperative en gagement with said-article. and to, draw fluid from said well through said passageway into said. cylinder beneath said ram, means for normally precluding the travel of fluid from said cylinder. through saidpassageway to said well. a. pump plunger; means for. reciprocating said. pump. plungen;hydraulicjmeansresponsive to. reciprocations of .thespump plunger iorelevating said ram to causethe tools: to accomplish a working operation. upon said. article, and. means for open ing said; passageway for fluid. tor perm-it. said ramconnected directly to said; ram; for causing. said ram toh elevated and depressed, saidmechaniw cal lift being. adapted to: be. actuated to elevate the-ranrto bring saidtools into cooperative .engagement with said article and-to draw fluid from said well through said pasageway into said cylinder beneath said ram -meansfor normally pre+- cluding the travel oi; fluid; from-said. cylinder.

through said passageway to. said'well;.-a pump plungen; means for reciprocating-said; pump plunger,- hydraulic rmeans responsive to reciproram 'toacause the tools to: accomplish a working operation upon" said-1 article; and means; foropening said. passageway for mud to permit said ram to become depressed; thus-to remove =-said tools from cooperative engagement-with said; article. 4.: In armachineofthe character described, a

supporting tool. including element for operating-upon sin-article; a. complemental tool includ- 40. tionupon. saidiarticle and means including a. manuall reciprocable: pumpplunger for operat-- to become depressedc 5. In .a machine 0i the-character described; a; tool. including an elementfor operating upon-an. I article,,,a oomplemental tool including; an ale-- ment fono'perating upon. said article in coopera tiona-with tool first mentioned,- a ram. carry-mg.

said first mentioned tool mechanism connected.

directly to said ram 101: actuating .saidram to bring saidfltool and eomplemental tool into engagement. with. saidarticle and to cause onenoi:

saidtools to be in spaced relation tot-thearticle, manually actuable. means forzcauslng-said mech-:

anism to-v beoperated. a..pi votal support for said. cations orthemump-plunger-dor elevating said manually actuablemeans,-means.pivotally conmeeting. said. mechanism andv said manually ac-- tuabie means. to each; other,; hydraulictmeans for actuating said ram tocause-said. tool and com.

plemental tool to accomplish a workingoperaing. said hydraulic means.

OLOV-J, E. OLSSON.

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