US149599A - Improvement in can-seaming machines - Google Patents

Description

- ZShaets-Sheetl. N EU MAN N Can-Seaming Machines. N0.l49,599, PatentedAprl 14, 1874.

w` l v l `UNITED STATES PATENT OFFICE.

JOSEF NEUMANN, OF NEW YORK, N. Y., ASSIGNOR TO ISAAC BERNHEIMER AND JACOB GOLDSMITH, OF SAME PLAGE.

IMPROVEMENT IN CAN-SEAMING MACHINES.

Specification forming part of Letters Patent No. 149.599, dated April 14, 1874; application filed December 11, 1873.

To all whom t may concern.'

Be it known that I, JosEF NEUMANN, of New York city, State of New York, have invented a Compound-Lever lress, to be used in the Manufacture of Oil and other Cans, of which the following is a specification:

The object of the invention is to rapidly fold and press the top and bottom seams of oil and other cans in a peculiar manner, in which it has not been done by machinery heretofore.

The invention is illustrated in detail inthe accompanying drawings, in whichp Figure l represents a vertical longitudinal section, in line 1 1 of Fig. 2, of the machine,

the cam-levers O O O O and'some other parts being omitted. Fig. 2 is a plan view of the plate A, with all the jaws in place, shown in such a position as they would be when the treadle B is up. Fig. 3 is a plan view of the plate A, having the bottom plate H' attached, all the jaws being removed. Fig. 4. is a side elevation of the vertical swaging-die g. Fig. 5 is a plan view thereof. Fig. 6 is a vertical diagonal section, in line 2 2 of Fig. 2, of the plate A and all its attachments. Fig. 7 is a plan view of the plate A detached from every other part. Fig. 8 is a plan view of the cam l', which operates the cam-levers O. Fig. 9 is an elevation of the bottom plate Hl detached, represented as looking at one corner thereof. Fig. 10 is a vertical diagonal section of all the jaws and the vertical swaging-die g, with a portion of the can-body and the can-bottom inserted, ready to have the seam formed. Fig.

11 is a vertical section of the can-body, such as the machine is calculated to operate on. Fig. 12 is a vertical section of the can-bod y in line 3 3 of Fig. 11. Figs. 13, 14, and 15 are also sections of the can-body and can-bottom, showing the lower portion of the can-body only, and the various stages of formation of the seam.

The last figures, 10, 11, 12, 13,14, and 15, are drawn on a larger scale than the preceding figures.

The machine is constructed as follows: A is a square plate, supported at a convenient height by suitable legs. It is provided with a large aperture, a, in its center, and an oblong radiating slot, a', at each of its four corners. B is a treadle-lever, having its fulcruni at b, attached to a cross-bar, b', of the machine. From this lever all the various motions required in the machine are obtained. O C O O are four cam-levers, which pass through the slots a a a a', some distance below the plate A, andhave their fulcrums at d d d d, above the platevA, in certain projections d d d d', cast onto the plate. Each of these cam-levers O transmits a slight horizontal reciprocating motion, in a diagonal direction, to two slides 0r jaws, e and f, which are guided between the shoulders g4 g4.. The four upper jaws ff ff serve to hold the can in position while the seam is being formed, and their inner edges are therefore shaped to iit the shape of the can-body above and below its shoulder, each embracing a corner of the canbody, and are wide enough to surround the whole square` thereof when they have been moved up to the can. The lower jaws e e e e serve to bend the edge of the can inward all around; their inner edges must also conform to the shape of the can. 7c 7c k k are four inside jaws, for the purpose of holding the can-body and the can-bottom in shape, and resisting the pressure of the bending-j aws ee while the seam is beingform ed. These resisting jaws k 7c are also capable of a slight reciprocating motion in a diagonal direction-that is, they can be contracted and expandedin which latter position they are shown in all figures. The means by which the expansion and contraction of these resisting jaws k 7c is effected will hereafter be explained. Their motion is guided in diagonal dovetailed ways h1, which are provided for them at the upper part of four blocks, l1J h h h, which are attached to a plate, H, in such a manner as to leave diagonal grooves h2 h2 be tween them. At the lower side of the plate H, in the center thereof, there is a vertical sleeve, H', which forms a guide for the vertical stem g1, which, at its upper end, carries the swaging-die g, which is capable of a slight vertical motion. Its construction is clearly shown in the various iigures. Its shape conforms to the shape of the interior of the can body, and consists of a square frame, having yround corners and diagonal arms, which unite in the center, where the stem g1 is fastened to the bottom side thereof. The arms of this swaging-die t in the diagonal grooves h2, in which they are at liberty to rise and fall. This swaging-die receives its up-and-down motion from the treadle through a horizontal lever, t', below the plate A, and a connecting-rod, QV. One end of this rod t" is slotted, as seen in Fic'. 1, in order to produce the lifting of the swaging-die g only at the last end of the downstroke of the treadle. The stem g1 of the swaging-die is hollow throughout its wholel length, and at its upper end there is a cone, g2, inserted, which, operating against the inner ends of the resisting jaws 7c k, causes them to expand when the swaging -die descendsthat is, when the treadle is on its upstroke. The contracting motion of the resisting jaws 7c can be produced by their lower corners coming in contact with certain bevels a: w made at the interior of the four corners of the swaging die g, when the said die rises, or by any other suitable means. There is a vertical center-rod, l, which is guided up and down in the bore of the stem g1 and receives its vertical reciprocating motion from the treadle through a connectingrod, Z2. To this rod is attached a cross, l1. The lower sides of the four arms, being curved, as shown in Fig. 6, operate as vso many cams against the lower ends of the cam-levers C C C C. The inner edges at the upper ends of these cam-levers are furnished each with two projections or teeth, y and z. As the lower ends ofthe cam-levers move outward on the downstroke of the treadle the teeth y produce the inward motion of the upper jaws f, and the teeth z that of the lower jaws e. The returnmotion of the cam-levers may be obtained by a rubber band surrounding the four leversnot shown in the drawings; and the return motion ot' the upper and lower jaws fand e may be obtained by separate springs attached to each of' them-also not shown in the drawings. There is a vertical standard, m, bolted onto the rear part of the plate A, which carries at its upper portion a lever, a, to which is hinged at its front end a square plate, nl, somewhat larger than the end of the can. An arm, n2, is fastened to the rear part of the lever n, and serves as a counter-weight, its inner edge bein g at right angles with the lever n. This arm or weight n2 causes the lever n to be in a position as shown in 'full lines in Fi 0*. 1 when the treadle is up. A vertical rod, o, being guided in suitable ways at the rear of the standard m, receives a vertical motion from the treadle by means of a connecting-rod, p, which is hinged to the rear part ot' the treadle behind its fulcrum. Vhen the treadle is carried down the rod o pushes the counter-weight n2 up to a position, as shown in dotted lines in Fig. 1, thereby moving its lever n and plate nl down to a horizontal position, and leaves these parts in that position while the treadle continues its downstroke. The treadle B may be carried down by foot-power, or otherwise, and a counter-weight, (not shown in the drawing,) at the rear portion of the said treadle, may return it to its original position.

The operation of the machine is as follows: When the treadle is up the resisting jaws k 7c k k are expanded and the upper and lower outside jaws have receded. Now, the bottom ofthe can is placed upon the resisting jaws 7c 7c with its flange or edge downward, and the body of the can is placed upon the bottom. Then, the treadle, being forced down, will first cause the bar o to carry down the plate nl upon the upper end of the cau-body and hold the same firmly down upon the can-bottom and the resisting jaws 7c throughout the whole operation of forming the seam at the bottom. The treadle, proceeding farther in its downstroke, carries down the cam l1, which moves the camlevers outward, and the upper jaws f, as well as the lower jaws e, inward. The upper jaws f come up to the can-body and hold it and the ange ot' the can-bottom rirmly between themselves andthe edges ot' the resisting jaws, in which position they are shown in Fig. 10. The lower jaws c advance slightly beyond the upper jaws, and thereby bend the extreme lower edge of the can body inward, as shown in Fig. 14. The eamlevers moving farther, the lower jaws e can recede from the can by dropping into the notches formed between the two teeth y and z, while the upper jaws f f retain their hold on the can. Finally, the treadle, on its last part of the downstroke raises the swaging-die g, which, in the meantime, contracts the resisting jaws to make room for the swaging-die to pass and turn up the edge of the can-body inside of the ange ofthe can-bottom, when the seam is finished, and of a formation as shown in Fig. 15. Now, the treadle can return to its original position, and the can may be removed from the machine.

I claim as my invention- 1. In a machine or press for forming the bottom and top seams of tin cans, the gravi tating arm n2, at right angles with the pivoted lever n which carries the plate nl, in combination with avertical sliding bar, 0, operated by the treadle, substantially as and for the purpose specified.

2. The outside bending-jaws e, in combination with the outside holding-jaws fand the inner resisting jaws 7c, operated substantially as and for the purpose speciiied.

3. The vertical swaging die g, in combination with the diagonal jaws e and the resisting jaws 7c, constituting the device for holding the can while the turning' of the edge takes place, substantially as described.

4. rThe inner resisting jaws 7i; k k k, capable of expansion and contraction, constructed and operated substantially as and for the purpose specified.

JOSEF NEUMANN.

Vitnesses ALBERT H. Hoort, A. AsoHER.

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