US1787125A - Press - Google Patents

Description

Dec. 30, 1930'. SNQW PRESS Filed March 29. 1926 r 40 to the operator ofthe' press Patented Dec. 30, 1930' UNITED? sTATEs ARTHUR E. snow, or CINC NNATI} OHIO, ASSIGNOR, BY MESNE Assrenmnn'rs, TO THE nA Y MANUFAGTURING' COMPANYyOF CINCINNATI; OHIO, A oonrormrrorr or riuzss Application fiiedna ch 29, 1926. ser al No. 9 ,093.

My invention relates to the general class of presses and particularly to presses for garments and articles made from cloth fabrics. It is the object of my invention to provide 5 a press which shall be drawn into pressing position by an electromagnet,'so that the necessity of physical manipulatiomfwith its consequent tiring effect onthe operator, may be avoided, It is further my object to so dispose the parts of the press and to arrange theelectric control units that the press head may be manually manipulated if desired, or

that it may be manually manipulated through most of its movement but in a certain position, approaching the pressing position, that itwillbe automatically connected soas to be actuated by the magnet. It is my object to dispose the control mechanism for the pressing head so that it will'not be set in operation until the relative positionbetween the pressing head and the buckis such that there will be no danger of the operators hands beingxcaught and injured during the pressing operation under influence of the 5, ma netg o l v pecifically it 'is my'object to provide in the manner illustrated in the preferredtype of press shown in thedrawings, a pressing head, c'arriedby a rocking arm, an electromagnetfjremoved from the pressing head which'will afi'ectthe movement-of the rocking arm; an electricswitch which will control the electric current passing to the magnet; so arranged ja'sfto be closed with the manual movement of the pressing head to a position close to that of pressing engagement, and preferably a second switch which will control the'electr'ic current to the" magnet,which switch will be in a position readily accessible Referring to the drawings in'which I h'aiV'e illustrated a preferredtype of pressembodying my invention:' V Figure '1 is a side elevation of a preferred type of press in which the magnet is horizontally mounted.

Figure 2 is a detail perspective of a modified type of operating-switch.

Generally indicated at 1 is the standard 59 on which the press is mounted, The pressing head 2 is disposed on one end ofarocker arm 3, pivotally mounted as at 4 in the supporting I standard; Extending preferably from the standard is the table 5 which, as shown, is mounted in position to be engaged by the pressinghead,the buck-6.

A fixed core typemagnet a horizontal position; and anexpanded portion 8 of the lower link 9 of thetwo toggle links is disposed inposition to be actuated by the magnet; The upper toggle link 10 is journaled at its upper end in the rocker arm 3between the pivot at and a weight 11 which is so arranged asto slightly. counterbalance the weight of, the pressing head 2 so that some slight manual pressure will be required to bringgthe head down against the buck, and so that when the magnetic power is cut ofi thehead will swing gradually open. 3

I't-is a feature of this type of, toggle in which the actuating force is applied close to the juncture of the toggles that as the toggle links approach alignment and while at a veryobtuse angle a comparatively weak force will result in a'gconsiderablymagnified stress exertednpwardlyso that by properly calculating the position of the magnet With relation to the joint of-theftoggle suflicent force can be exerted to'bring the head down strong enough against the buck toperform a very satisfactory pressing operation. 1 a

, As the head approaches the buck not only does the approach of'the toggles to aligned position make a' greaterypressure upwardly on the upper toggle result'from a given magnetic force, but as the expanded portion of the lower toggle approaches the electromagnet the magnetic -pull becomes increasingly stronger, v

, Bythe use of an electromagnetiand the application of the magnetic vvforce to. a {toggle joint fjustbefore the toggle links reach an 7 is mounted in aligned position' a: pressing forcejis exerted which combines both an increasing application of forceQclue-to the mechanical principle involved in thetoggleconstruction combined with a proportionately increasingQmagnetic pull as the expanded part of the toggleapv I proa' c'hes the magnet.

Although V the application ar ues powerto atoggle joint, as indicated, makes astructure which is substantially safe for a pressing machine operator, in that sufficient downward pressure cannot be applied by the magnet to cause the press to close when an operator has part,oflnspersomsuchas his hand 1 or arm f'between the head and l hav e "further provided an electric control for the magnet which will prevent the turning on of 12 is connected-to one side 14 of a contact a 15 switch-15. From the other side" 16 of the thecurrent as :long ass-there is any ,dbstruction between lthehhead and buck.

Current is supplied to the press from the power feedlines 12, 13. The power feed line wish 151? in 1914 ,sXtsnls ts the s tst .7 whi may b us d 9 Ma y th pr su e i d fi n tyn s d g i n s roi 'th' thefwinding to ,one side 21ofanother contact,

c es s m' de (i h r s ta ne 1 es t n o as Wi di 919 th s a ms net. Aline 20 extends from the other end of switch: a "To the other side 22 of the contact s'w s sss sisssshssssss ss s hi The lower toggle link carries a spring sw t h los n ilsmen 3 w ic may, as i i ets s asist s e ss ia 'cond i tiv head wa lets-e911 s P a es; r09 .2? was is mess w e the swi ch nbs sby a sp ns26- Wh n h P ss s elmq lo ed h me 2 e g the side 1 a 1 2 the w tch and thus closes the circuit at this point i So'that the operator may apply the curre f h de res, as sn i siof t h is constructed :so that by its rotation a circuit closing rod 27 may be retracted so that'the switch 15 will remain closed Arm' 28 egg 7 tend from the head and they have round ass ,9 s si 'shsih ss s o essees journa-led. Fixedly mounted on the handle 30 isa crank arm 31 in whichflis' pivoted the sods? wh h is in ps d by s $P 'ing32 isk normall ss it o is pos t o n which the switch is 'c'losed, i

Itwil-l be noted that the member 14 of the 7 switch 15 is curved backwardly at its top: so

as wis 's s s s 2? may h moved i should t e opera or desire to open the switch p e ts l vi n ihs .s'sss ifi d by" s i is'i h is. i s ss ss n Figure 2. In t is modification the'handle Wis r mme in th s ss 29 but i stea of employing a switch'15,a switch is carried on the handle. The 'power line 12v connects to se :sid 34 f th s' i it sk i Inadeth s iers f' nn l ads-pe s e e gag d byarknlhfsilfii isd y mosses 9. th aiid i 39-Th95ittiit1ins 1 s ie h msdi sa ien is psiis sd o the e stsc pass .36 which is ing through a boss 39 at the end of the bracket may be so adjusted as to act as a stop when the toggle arms are drawn into as aligned relation as is required in accomplishing the pressing operation.

Having thus described my invention, what Iclaim as new and desireto secure'by Letters Patent, is v 1; A pressing machine comprising a bed, a movable head, toggle means operati-vely connected-to the head and-to at-relatively fiXed part and arranged to straighten with the closing of the head, manual means for closing the head, and means for affecting the pressing buc kgla toggle ,connectedwith said head, a

magnetically permeable member carried ,by said toggle, and an electr c-magnet for magnetically attracting said member thereby actuating said toggle, to cause said head to engage sa d buck. s

s p ss m e hi s c mp is s ask,

ahead mounted for engagement with said uc a meal s tsdfw th' a ha and an e eetro-magast or a tua ing said sg t s id ie 1 t e ag aidbusk, a d

electro-magnet comprising'a' fixedly mounted core'type magnet with the axis of the core u an a y para l Wi hthe urf -sis f th ba d id to g \s y ns an mat re adapted to be attracted by said magnet.

4 A Pr ssi m chine compri in a d, a ovable h ad; te gls m sn's earn ng a armature andoperatiyely ck nnecteda to the e d and J a lstivs y fi sd Part an angedtp straighten wi h t is L s ng. ofgthe head, jinanual "means "for closin the head, ni trs msgss 'i r afis in o s p ss n" pera i ny at ra tingthe rm ture .Qn-sai t l m on ai s t s ms nst bein so pecs-d s st s t sa d armature On. said t gls means as to sssms sfl s ysisr attracth s said asit na nresnly wh n "said togg missi e-MY? mea s traightene out 1' HUR E, stow-V i slsst al' iils t n 'Wit th kni'fsfisn this iddifisatiss h ls sifat n ls s th switsh'at an ti eshssl ss.

A bracket 37 extendsfb l a tesgle li and as seamstre s? b lt ts exten k from the. apps 7

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