US588749A - Mechanism for wiring edges of covers or analogous articles - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

H; H. HULL. MEGHAMSMFOR WIRING EDGES 0F COVERS 03 ANALOGOUS ARTICLES. No. 588,749. Patented Aug. 24,1897.

I 7, l \2 d/ a I d/ (No Model.) 2 Sheets-Sheet 2. H. H. HULL. MECHANISM FOR WIRING BDGES OF COVERS 03 ANALOGOUS ARTICLES.

No. 588,749. Patented Aug. 24,1897.

Ym: mums FEYERS co. m cio-umq, WASHINGTON o. c.

- UNITED STATES PATENTv OFFIGE.

HERBERT H. HULL, oE CLEVELAND, orno.

MECHANISM FOR WIRING EDGES F :CQVERS OR ANALOGOUS ARTICLES.

SPECIFICATION forming part of Letters Patent No. 588,749, dated August 24, 1897.

Application filed August 3, 1896.

- which it appertains to make and use the same.

. when the opposite end of said article is closed.

So far as I now know the mechanism hereinafter described is the first mechanism by which this result can be attained.

The object of the specific embodiment o my invention which the drawings show is to complete a cover wherein the ripping-wire is embraced by the inwardly-turned edge of the cover and has one end projecting outwardly from the cover.

The invention consists in the construction and combination of parts which are hereinafter described, and definitely pointed out in the claims.

In the drawings, Figure 1 is a central sectional elevation of my wiring mechanism before it begins to act. Fig. 2 is a central sec tional elevation of said mechanism, showing the parts in the relative position which they occupy just as the wiring operation is completed. .Fig. 3 is a bottom view of the upper or movable part of the apparatus.

Referring to the parts by letters, A represents the bed-plate, having a circular recess a in its top.

B represents a circular platen which fits said recess and is vertically movable therein. It is subject to a constant pressure upward, which may be produced by a series of springs b,which are contained in sockets a in the bedplate, which springs thrust upward against pins 1) on the under side of the platen B. The upward movement of the platen is limited by any suitable mechanism-as, for ex- Serial No. 601,433. (No model.)

ample, pins 12 which pass upward through and down by suitable mechanismas, for example, the plunger of. a die-press-whichis not shown.

, In the center of this plunger, extending from the bottom to near the top, is a recess 0. Near the bottom of this plunger this recess is enlarged, so as to be adapted to receive the expanding ring E, the said enlargement being indicated by the referenceletter 0'. The. formation of this recess necessarily produces the depending annular flange c", which surrounds it.

, D represents a circular pressure plate which is formed upon or secured to the lower end of the stem cl, which stem passes up through the recesses c c and through a hole in the top of the plunger and is guided in its movements relative to said plunger by engaging therewith. Upon the projecting end of the stem (Z a nut d is screwed. A coilspring 01 lies in the recess 0, surrounding the stem cl, and it thrusts endwise against a'shoulder d upon the stem and against the top wall of the recess 0 in the plunger. The force of this spring is constantly exerted to move the plate D and stem cl downward relative to the plunger 0, which downward movement is limited by the nut d.

In the enlarged recess 0 and embracing the stem at is an expanding ring E. This ring is composed of four (more or less) sections (2-, which are held in the proper relation to each other by an elastic-rubber ring e, which embraces them. 6 represent pins which project through the bottom of the ring-sections. The heads e of said pins 'are movable in recesses e in said sections, which recesses contain coilsprings e which-thrust endwise against the heads of the pins and against screw-plugs e in the upper ends of said recesses. The lower ends of these pins bear upon the top of the plate D, and-the springs c exert a constant force tending to, move the expanding ring upward relative to said plate D. On the lower end of the stem d, adjacent to the plate D, an annular outwardly-beveled surface (1* is formed.

An annular depending wedge-shaped flange c is formed upon the plunger in the recess 0 around the stem d. In the lower edge of the plunger 0 is formed the annular curlinggroove 0 which is shaped so that when the groove engages with the top of the cover it bends said top inward and downward. The outer periphery of this groove extends clownward below the inner edge of the groove and embraces the top of the cover during the curling operation.

When performing the functions for which the described mechanism is organized, the parts thereof move in the following manner: The cover G, in which the wire H has been placed, substantially as shown in Fig. 1, is placed upon the platen B. One end of the wire I-I extends out through a notch or slot 9 in the edge of the cover, and this projecting end of the wire lies in a notchj in the topof a vertically-movable pin J, which is mounted in the bed-plate A and is moved upwardly by a coil-springj. The plunger 0 is now moved down. This movement is transmitted through the springs (Z and stem (Z to the plate D, which plate enters the cover and strikes the bottom thereof. The further downward movement of said plate D presses upon platen B and moves it down to the bottom of the recess in which it lies. As the plunger continues to move down the wedgeshaped flange c enters between the ring-sections and the stem and presses said ring-sections in two directions--viz: downward and outward-with the result of expanding the upper end of the ring slightly. At this stage of the operation of the parts only a part of the wedge-shaped flange enters between the stem and ring sections.

As the expanding ring moves down by reason of the downward pressure above referred to the ring-sections are brought into engagement with the beveled surface (Z on the stem, whereby the lower parts of said ring-sections are moved outward. The flange e enters the cover and passes below the wire H, the ring expanding during this downward movement. Just after said flange 6 passes below the wire the ring will have expanded sufficiently to carry said flange under the wire, whereby the continue to move down, but the plunger movesthe faster, because the downward movement of the expanding ring is resisted by an increase in forceviz., the force of the springs e which as theyneartheircompression limit more and more resist the force tending to compress them. As the ring moves down its reaches the end of its downward movement, I

at which time the plunger has overtaken it, the wedge-shaped flange c has been completely inserted between the ring-sections and the stem, the parts of the device are in the position as shown in Fig. 2, and the wiring of the edge of the cover is now completed.

The plunger in its downward movement strikes the pin J and moves it down against its spring, and the projecting end of the wire enters a corresponding notch c in the lower edge of theplunger. The plunger 0 is immediately retracted, and all of the parts substantially reverse the described movements until they resume the position shown in Fig. 1, at which time the completed cover may be removed and a new one substituted and the described operation repeated indefinitely.

It may be here stated that the flange e need not, although it preferably should, be a complete ring. The essential characteristic of the expanding ring, so called, is that it shall in clu de outwardly and inwardly movable supports for the wire during the wiring operation, and these support-s must be arranged in a circle, so as to support all parts of the wire, and they must be vertically movable relative to the cover, so that they may move into and out of said cover.

Having described my invention, I claim 1. In a device for wiring the edge of covers and analogous articles, the combination of a platen for supporting the cover to be wired, and a vertically-movable plunger having a recess in its lower end, a depending annular flange which surrounds said recess, and an annular curling-groove in the lower edge of said flange, with an expanding ring centrally supported within said recess, means for normally contracting it to its smallest diameter, and mechanism whereby the downward movement of the plunger moves the said expanding ring downward into the cover supported upon the platen, and mechanism for expanding said ring within said cover, whereby its edge passes beneath and supports the wire as the edge of the cover is turned inward by the further downward movement of the plunger, substantially as and for the purpose specified.

2. In a device for wiring the edge of covers and analogous articles, the combination of a 'plunger having a recess in its lower end, a

depending annular flange surrounding said recess, and an annular curling-groove in the lower edge of said flange, with a stem, vertically movable through said plunger, having a horizontal plate upon its lower end, a spring acting to force said stem downward relative to the plunger, an expanding ring embracing said stem within the recess in the plunger, a spring for contracting said ring around said stem, and means for expanding said ring when it is moved down upon said stein by the IIO action of the plunger, substantially as and for the purpose specified.

3. In a device for wiring the edge of covers and analogous articles, the combination of a vertically-movable plunger having a recess in its lower end, an annular flange surrounding said recess, and an annular curling-groove in the lower edge of said flange, with a stemvertically movable through said plunger,having the beveled surfacedfl a plate on the lower end thereof, a spring for moving said stem downward relative to the plunger, an expanding ring embracing said stem, a spring for contracting said ring, and a wedge-shaped flange rigid with the plunger, depending from the top of said recess and embracing said stem, and springs exerting their force to separate said plate D and expanding ring, sub- I stantially as and for the purpose specified.

4. In a device for wiring the edge of covers, cans, and analogous articles, the combination of a bed-plate A, the verticallymovable platen B, and the vertically-movable springpin J having a notch in its upper end, with a plunger 0 havin gin its lower edge the annular curling-groove c and a notch 0 with a plate D, its stem which is movable in suitable bearings in the plunger, a spring 01 encircling said stem, an expanding ring E embracing said stem, spring-actuated pins carried by said ring engaging withsaid plate D, the Wedge-shaped flange c on the plunger, and a beveled surface 61 on the stem for expandin g said ring, substantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

HERBERT H. HULL.

Witnesses:

E. L. THURSTON, E. B. GILCHRIST.

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