US687056A - Folding-machine for tin boxes. - Google Patents

Description

No. 687,056. Patented miv. I9, mm. s. nPsAL.

FOLDING MACHINE FOR TIN BOXES.

(Application filed Dec. 24, 1900.) (No Model.) 2 Sheets-*Sheet I.

m: cams PETERS on. uumouvuou WASNINGTON. n. c.

(No Model.)

s. OVPSAL.

- (Application filed Dec. 24, 1900.)

Patented Nov. 19; 1901..

. FOLDING MACHINE FOB TIN BOXES.

2 Sheets-Sheet 2.

' V m: uonms PETERS co. PHOTO-UTHQ. wAsmNm'oN, u. c.

UNITED STATES PATENT OFFICE.

SUREN OPSAL, OF STAVANGER, NORWAY.

FOLDVING-MACHINEMFOR TlN BOXES.

SPECIFICATION forming part of Letters Patent No. 687,056, dated November 19, 1901. Application filed December 24;, 1900.1 Serial No. 41,002. (No model.)

To aZZ whom it may concern:

Be it known that I, S6BEN OPSAL, a citizen of the Kingdom of Norway,-residing at Stavanger, Norway, have invented new and useful Improvements in Folding-Machines for Tin Boxes, of which the following is'a specification.

This invention relates to machines for the manufacture of metal boxes from tin-plate or other sheet metal by uniting the parts thereof by interfolding the borders thereof; and the invention consists in the peculiar construction and arrangement of a machine which is adapted to hold said box parts andwhile so held to effect the union of said border parts by interfolding the same, all as hereinafter fully described,and more particularly pointed out in the claim.

In the drawings forming part of this specification, Figure 1 is a side elevation of a machine for folding tin boxes constructed according to myinvention. Fig. 2 is a vertical sectional view of the tool-carrying head of the machine and a side view of the central tool-moving shaft, which is hereinafter described. Fig. 3 is a plan View of certain parts shown at the upper end of Fig. 1.

Referring to the drawings, (1. indicates the frame of the machine, which comprises a vertical standard, a suitable base, and a bracket part 6, extending at right angles from said standard, near the upper end thereof. The tool-carrying head comprises a central cylindrical sleeve 1, the upper end of which enters a socket in the under side of said bracket part and is there retained in a pending position, as shown, by a screw 2, entering the end of said bracket. Said sleevelis tubular from its upper extremity nearly to its lower end, as shown in Fig. 2, and has there a transverse slot 3 through it from side to side, and the end below said slot is solid, as shown, to provide for securing thereon certain operative parts, as below described. A second sleeve m, having a flange around its lower end, is secured on said sleeve Z by a screw 4, which passes from the border of said flange through the latter and engages in a socket in the surface of said sleeve, as shown, thereby holding said two sleeves operatively in the united relations shown. The upper end of said sleeve Zabuts the under side of said bracket,

as shown. A head 19 is suitably secured on the lower extremity of said cylindrical sleeve Z, which head forms an upper abutment against which a box is held while being operated upon.

for folding the corners thereof, a groove 2 around said head serving to facilitate said folding. A series of vertical guide-rods is have their upper ends fixed in the under side of the flange of said sleevem and pass freely through the body of a cylinder having two beveled-edge guide-disks 7i 'i thereon and have their lower ends secured to the upper surface of said head 1). Thus said guide-disk cylinder is free for vertical movements, guided and supported by said rods on the lower end of said cylindrical sleeve, and is given said move- I ments by connection with the vertically-movable central connecting-rod g by means of a screw 5, passing transversely through the body usual tight and loose pulleys b, which are driven by any convenient power connection. The said rod 9 and the said parts connected thereto are moved vertically by means of a lever q, Fig. 1, pivoted on said frame-bracket and having a downwardly-extending handle by which it may be operated by hand. Ashaft f is supported in a lateral projection on the upright part of the frame a for free vertical movements and has a head n thereon, operating opposite and under said head 10 by a lever w, connected to said shaft and pivoted on said frame a, a weight 0, hung on said lever, serving to automaticall y carry said shaft and head it upwardly against a box placed between said two heads and operative by foot or other action to move said lower head it away from the upper head 0.

A folding-wheel carrier his pivotally hung on the bolt 1), (see Fig. 2,) and its extremities have a limited swinging movement in a horizontal plane, and they carry on said extremities the folding-wheels s and a. Said carrier h is carried around with the pulley e, to the end that the said folding-wheels may operate against the box parts for folding the same, as below described. Said carrier h is pivotally connected with said pulley e by means of the headed bolt 1 passing upwardly through a tubular sleeve and one of the arms of said pulley c and is there secured by a nut, as shown, said carrier being hung on said bolt, between the head thereof and the lower end of said sleeve, for swinging movements in a horizontal plane. On said folding-wheel carrier h are two freely-rotating friction disks or pulleys t and r, one on the upper and one on the under side, (see Fig. 1,) which pulleys are engaged alternately by the upper and lower bevel-edge guide-disks z' i, hereinbefore referred to, and through such engagement said carrier is swung to carry the foldingwheels 3 and ualternately against the parts of a box which are to be folded, asbelow de scribed.

If the tin box to be operated upon be round, oval, or angular, the heads n and p and guidedisks 1 are made of corresponding forms.

The operation of the machinein folding box parts is as follows, the machine having been started and the pulley e thereby given a rotary movement: The tin box, the cover and bottom of which are to be folded, is placed on said lower head a and is then by the action of said weight 0 on the lever 20 carried upward and pressed between the latter-named head and said upper head 19, after which by grasping the handle of the lever q, operating the shaft or rod g, and moving it in the direction indicated by the arrow in Fig. 1 the lower guide-disk i will be lifted and forced against the guide-roller '1', thereby swinging the carrier h and pressing the folding-wheel 3 against the box parts, thus effecting the primary folding of said parts, and then said lever q is moved in an opposite direction, thereby carryin g the upper guide-disk '5 against the guideroller 15, thereby forcing the folding-wheel it against the edge of the box and completing the folding operation, it being understood that with the rotary movement of said pulley the ends of the carrier h and the foldingwheels 8 and a are caused to move in a circle around the box parts held between said heads 19 and n.

Having thus described my invention, what I claim, and desire to secure by Letters Pat ent of the United States, is-

In a machine of the class described, a suit able frame, means on said frame for holding metal box parts in position for mutual union by folding their borders, a folding-Wheel car rier having a folding-wheel on each extremity, means for s'u pportin g and for moving said carrier and folding-wheels in a horizontal plane around said box-holding devices, and for effecting the alternate engagement of said folding-wheels with said box parts during the movement thereof around said parts, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

SOREN OPSAL.

\Vitnesses:

FRED. WATTNE, J. NERUM.

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