US96535A - Johs anneae and w - Google Patents

Description

JQHNANNEAR AND 'w1 .I; GonDoN, or PHILADELPHIA, PENNSYLVANIA. v

The Schedule referred to in these Letters Patent and making part' of the same.

We, JOHN ANNEAR and W. J.- GORDON, of the city i of Philadelphia, in the State of Pennsylvania, have invented certain Improvements in Double-Acting Presses for Blanking' and Forming Up Sheet- Metal, of` which the following is a speciiication.

Nature and Objects of the Invention.

The first part of our invention relates to the combination of a pair of coupled levers with a blankin'g and a forming-up plunger, working together, th`e one within the other, and operated by the levers, in such a manner, in dies below, thatl a blank can be cut out, formed up, and discharged therefrom at every revolution of the crank of the operating-shaft, the object of this part of' our invention being to facilitate and render Amore perfect and certain the operation of blanking and forming up sheet-metal.

The second part of our invention relates to the combination of certain springing stripping-blocks or hooks with the forming-die, in such a manner that the said blocks or hooks will be caused to recede by the operation of forming up the blank, and then be allowed to spring out, and strip off the so-formed blank from the plunger,` and allow it to drop, by gravitation, freely from the'die, the object of this part of our inventioir being to render certain: the discharge .of each succes sivelyformed-up blank immediatelyafter it has been so formed up; l v

The'third part of our invention relates to the com bination,l^wi th the pair of coupled leversand their respective plungers, of a screw-couplin g, constructed and applied so as to enable the operator-t0 readily adjustl the range of the. forming-up plunger within the blanking-plunger, as any changes in the depths of the plungers' and dies may require.

Description of the Accompanying Drawings.

v Figure 1 is aperspective viewof the whole machine, and

Figure 2, an enlarged central vertical section of the plungers, and of theseveral parts of the die, detached.-

General Description.

' These levers are each ofthe first class, have their fulcra bearing, rrspectively, in the uprights of the frame, at c and d', their weight-ends. articulated to the rev spective plungers E and F, through the media of the bars G G and H H, and the power-end of the upper lever C connected, by the screw-coupling I, with the,

power-armor the lower lever D, at, such a distance from the power-end of the latter as will, in co-operation with the respective points of motion of the levers, cause theAveight-cud of lever D to move the plunger F with greater velocitythan will be admissible for the plunger E, so'that, immediately after the plunger Ev f has cut out the blank, by 4entering the upper die, the` lower end of' plunger F will be caused to advance suficiently beyond the lower end of the containing-plunger E to form up the blank in the lower die, and push it through thel same before the said plunger E has reached the top of the lower die, asv willherein be more fully explained i'n'describing the operation ofithe machine. Y

The adjusting-screw I is lengtheued or shortened by det-aching its lower end, (from the lever D,) and rotating it in the direction required. p

Motion is given to the levers C and D by means of a crank, K, connected to the power-end of lever D by means of a coupling-bar, L, the cranks shaft being driven by abaud and the usual pulleys, o '0, or bya l Afoot-lever, M, connected, bythe bar m', to the said le- Y ver D.

The dies N are constructed of steel, and in three part-s, t. e., the blanking or upper die n', (see fig. 2,) the forming up?7 or lower die n", and the base-plate fn.

' The diameter of the mouth of' the blauking-die n corresponds with the outside diameter ofthe blankngplunger E, the diameter of the mouth of the formingyup die fa corresponds with the diameter of thef'orming-up plunger F, and the diameter of the opening' in the base-plate a corresponds withthe diameter of' the enlarged opening 4 of the lower part of the dien.

The top of the die presents --a cutting-edge around its mouth, and the bottom of the block has a concentric enlargement, 5, which receives within it the die 'nf'.

The die n presents a rounded edge around the-uppcrpart of its mouth, and just below the said. mouth the block is recessed concentrieally, so as to produce an enlarged opening, 4.

In opposite narrow recesses made in the projecting rounded sides of the mouth of die n,.two hooked blocks, 6 6, pressed outward by respective springs 7 7, behind them, are so arranged as to yield backward iutheir respective'recesses sufciently to allow'the plunger F, with the formed-.up blank' attached, to pass through the forming-up portion of 'the-die-blockl into the enlarged portion 4, and then to spring inward, so

that their respective hooks willl'catch outhe edge oi' said formed-up blank, 'and hold it d own, while the plunger F asceuds, and thus lets the said formed-up blank drop ldown through thcopeuiug iu the plate n below.

In the operation of this machine, the crankK-forces upward the power-end of lover D, which, by means of the adjusting screw-coupling I, adjusted im its length.

to bring the lower ends of both pluugers in the same 'plane at the time the blank is bein g c ut out, forces upward, at the same time, the power-end oi lcver C, and,

consequently, the weight-ends of said levers, at the same time, force downward their respective plungers`z E and F, by means of the Couplings G G and H H, the relative speed and lengths of motion in the plungers being governed by the distances between the points of motion in the respective levers, as connected together by the adjusting screw-coupling I.

The adjustment of the levers C and E, and the relative sizes and forms of the diesand pluugers, iu this instance, as shown in the drawings, are such as are required for cutting out and forming up circular disks or blanks of tin plate for blaeking-boxes; and, the sheet of tin plate being laidon the upper die n', the plunger E descends, and outs out the blank or disk required; and the plunger F, being more rapid inlits motions, immediately projects fromv plunger"`E, and forms up the circular edge of' the blank or disk, by forcing it entirely through the forming-up partof the lower die n, when the hooked blocks 6 6 sprihg out, and catch upon the turned-up edge or rim of the said blank, and strip the latter off from the plunger F as the latter rises, and thus allows the formed-up blank to drop through the opening in the plate n', the plunger E not reaching the top of the lower die n untilthe plunger F has reached the full extent of its downward motion.

The operation of the maehineis very simple and ei? feet-ive, especially for the purpose of blanking and forming up the tops and bottoms of blacking and other boxes of tin-plate sheets.

Claims.

We claim, as our inventioni' 1. The combination of the levers C and D and the y plunger E and F, substantially as and for the purpose the lower die n", substantially as and for the purpose hereinbefcre set forth. i

4. The combination .of the adjusting-screw I with the levers O and D and plungers E and F, substantially as and for the purpose hereinbefore set forth. v JOHN ANN EAR.

W. J. GORDON.

Witnesses:

BENJ. MomsoN, WM. H. MomsoN.

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