US107901A - Improvement in machines for making clevises - Google Patents

Description

` To all `jwhcm (it 'may concern natascia we aww,

JOHNS; HALL, or rrTTsBURc, PENNSYLVANIA;

Letters Patent No.` 107,901, dated october 4, 1870i iMPRovEMENT IN MAcHlNE-s Fon MAKING cLEvlsEs.'

Be it known that I, JOHN S. HALL, of Pittsburg, in the county of' Allegheny and State of Pennsylvania, have invented certain new and useful Improvements inMachines for Making Clips, Olevises, Stirrnps, and

similar articles; and I do hereby declare-the following to be a full, clealyaud exact description of the same, reference being had to the accompanying 'drawings inakinga 'part of thisspecication, in whichi chine.

l' Figure 2 Iepresenltsaftop plan thereof. Y Figure 3 represents anlelev-ation of one of the ends .of the machine. i t

' Figure 4 represents in perspective the punching v mechanism, with a clevis in. place to haveftlie` holes 'punched iny itafterri-tvis finished in the dies.A

Figure 5 represents one of the blanks as itappears 'l after havingfbcen creased in the creasing-dies.

1 Figure-f6 represents Vthe same. blank as it appears afterits creased portion has beenfolded in `the folding-1 dies. t H

Figure 7A represents the clevisas it `appears after beingoperated upon by the fformerholden backen i and bendinlg-jaivs,.andready'for the punching process. 4

' Similar letters oiizreference, where they occurin the several separate ,gures,ldenote like `parts of' the machine in allof theudrawings, r My invention relates to a machine in kwhich rolled blanks are `creased,foldedfben`t,and `punched 'so as to beinished, and ready'for -market,'by the series of mechanical operations4 hereinafter described.

In or on themain frame of fthe machine is hung a 4drivngshaft,. A,'whichvmay be driven from-any rst-` moving-power, and yfromthis driving-shaft all t-he-moving 4parts of the machine jare operated directly or`indirectly. t i Y' l 7 On the shaft Av there is a bevel pinion, B, which gears into a bevel-wheel, C, fast on a cross-shaft, D, and Vthrough these gears said cross-shaftgis driven.

The shaft D has a crank, E, upon it, which is straddled bythe forked end of `a bendingor creasing and folding-lever, F, pivoted on-top of' thetable G, and to pllrr-blocks, H, thercon,at a-,as seen in gs. 1, 2,.

thatthe dies shall crease from a central point f'tojwarli thc-extremities ovthefblank. j

The 'endsd` ofthe moving and stationary die-blocks are formed and desgnedufor folding over and down- Figure l represents a perspective view of the ma`` i '.ll'lleA Schedule referred to in these Letters Patent and making part of the same.

ward the portions of the blank that are first 'creased `j by the male and female creasing-dies. v

On the drvingshaft A there is a pinion, J, that gears into a large '.cog-wheelfK, arranged on a shaft, L, supported in;v the main frame above, and parallel with said*drivngshaft.'

On this shaft L there is arranged (beginning at its end nearest the gear K) an eccentric, M, a cam-tappet, N, a crank, O, and a second cam-tappet, P, which, though arranged on the shaft in the order of succession named, will bedescribed in the' order in which thesuccessive operations upon the blank take place,

Q is a slifliiig shaft supported in the arms R S, saidshaft ha'vi'ng upon it an oblong slotted yoke, T, which passes over the crank O, and receives a reciprocating motion thereby in its supports R S. 'To this reciprocating shaft Q there ispivoted, at c, the two ends of the two rodsU V, the other en ds ot said rods `being connected, at f, to the arms W, that areon the spindles of the bending ja'ws 1 2, that are, by these connections, moved horizontally, to bend the blank around the former X.

Theformer -X is connected to a lever, Y, which ever is pivoted, at g, to a permanent portion, h., of the table or frame; and this lever Y extends out'and underneath the shaft L, so as .to come within the path of the tappet N, and be forced down by said tappet."

The free endof the leverY is'connected, bya chain, i, toa spring, j, so that after the tappet has left the lever the spring will raise it up again, and the former witlrit. A 'The object in moving the formel' down to the plane of the table is that the hen t-shaped and formed ar-A ticle may bereadily removed.

In a guiding and1 supporting piece, Z, there is placed aslide-rod or bar, k, against whichthe tappet or cam Pworks. i Y t r The slide-bar k has connected to it, at the point l;

two rods, ma, the rod mbeing pivoted to an arm, o,

fast'on an oscillating shaft or bar, p, that is pivoted in the pillar-blocks g, on the table G; and the other rod, n, is pivote-d, at of, to a bent arm, s,. Which-, in turn, `is pivoted, at t, to a sliding piece, which I term a backen 3, which acts in concert with the bending jaws 1 2.

On the oscillating bar p there is 'a downwardly-bent arm, a, which, when the blank is placed 'in position for being bent aroundthe formen'comes down upon the blank, and holds it in position for the backerfand" for the bending jaws. p

The bending or shaping is done-by the joint action of five active devices acting Ain concert with each other, viz.: first, the former X; second, theholder u; tl1ird, the hacker 3,- andfourth and fth, the bending jaws 1 and2. y Y l To the 'arrn o, at its pivoted connection with-the rod m, therea's fastened a chain, e, which passes over a pulley, lw, audA has upon its end a weight, x.

When thecam-P is Aforcing the bar k and its several connectedparts into action, the weight x is raised up thereby. When the cam ceases to ac t upon the bar, or leaves it, the weight falls and draws back the "parts into position to be again acted upou'by the camat its next rotation.

' lever 4, and on or in the under side of this plate are arranged the punches-'8 8,`which work intoconnterdies 9 9-.on the anvil or bed 10.

'lhese punches and counter-dies are for punching the holes in the nished devices, the bed being so made as that the straps or sides of the clevises can be readily submitted to the action of' the punches, which, as well as Vthe counter-dies, are removable, so as to adapt the machine to various dies and punches,

4or adjustments of them.

The blanks are rolled out into the proper forni, and, thus prepared and lirst heated, are laid in" place on the block I, the creasing-die b comes down and creases the blank in the line in which it is to be folded.- It is next put between the dies d, which folds it down, bringing the two edges together.

The articlethus folded is laid in place on the table; -the former X rises up, and the holder udesceuds upon the piece and holds it to the table, said former and holder being also indented so as to make the indentations in the partially-formed clevises. 'lhe hacker 3 .next comes up, and forces the article against the former, and, nally, the bending jaws l and 2 swing around, and bend the clevis into finished form. The shaping, holding, and bending devices no'w recede, the former drops down through the table, and the article is free to be removed. Ifa clevis, or other ar.- ticle requiring holes to be punched, it is removed to the anvil or counter-punch, andthere, after it is shaped and formed, so as to require -no' more bending, it is punched.

The anvil or bed 10, as more distinctly seen ing. 4, has an opening in'or through it, into which one of the straps or sides of the clevis is inserted, while the other one lies upon the counter-die 9, to be p nnched. This admits of the punching after the clevis is other- 'wise lfinished.

If the blankwere punched before it was bent, the

-or more of the blanks to break at the holes in thc bending would break the blank at the holes. Iarrange, .therefore, for punching the'clevis,4 or other article, after it is shaped.

The operation of the machine is as follows:

The blanks being cut from the rolled bar into suitable lengths, and heated to a welding heat, are subjected, one at a time, to,.first, the creasing-dies b c, which creases the blank, as shown in iig, 5. The creased blank is then moved but a slight distance, and subjected to the folding-dies (Z (l, which bring the two edges each side of the crease down together and give to the blank the shape or form shown in iig. 6.A The partially-formed blank is then laid in place in between the shaping and bending-dies, whichare op'en vfor its reception, as seen ing. 1. vThe for'mer X is raised up to catchthe blank on thatside. v v. Ihe hacker 3, the holder and Shaper iu,- and the bending and shaping. jaws 1 2, all move toward the blank, and drive and compress or upset it into the form shown in'fig. 7.

The former, holder, hacker, and bending jaws, are all of them dies, each imparting to the clevis a portion of its finished shape or form, the former X' and holder'u, by Atheir indentations, forming the indentations in the clevis, while the hacker 3 and the wings or jaws 1 2 finish up and shape thc exterior of the clevis.

The clevis, thus shaped and formed, as shown yin fig. 7, is taken to the punch, and being placed, as shown in fig. 4, on the anvil or b ed 10, is punched.

By punching the straps' after the clevis is finished, is a very material operation, inasmuch as the punching before the bending caused some twenty per cent.

after operation of shaping and bending.

Having thus fully described my-invention,

What I claim therein as new, and desire to secure by Letters Patent, is-V 1. In combination with a supporting-frame and the table G, the shaping and bending-dies, consisting of the former X, holder u, jaws 1 and 2, and the hacker l3, arranged andoperated substantially as described.

2. The construction, jointly, with the arrangement relative to one, another on the table G, of the creasing and folding-dies, and the punching apparatus.

3.' The arrangement, relative to one another on the table'G,'of the creasing and folding-dies, the punching apparatus, and the shaping and bending devices, substantially as set'forth.

JOHN S. HALL.

Witnesses:

A. B. STOUGHTON, J AMES GAssIDY.

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