US426825A - Tool for crimping metal bungs - Google Patents

Description

(No Model.)

E. G. LEWIS.

TooL FOR GRIMPING METAL BUNGS. No. 426,825. Patented Apr. 29, 1890.

Always.

'rares 'Eric nrENr EUGENE C. LEVIS, OF NASHVILLE, TENNESSEE.v

SPECIFICATION forming part of Letters Patent No. 426,825, dated April 29, 1890.

Application filed 'elnnr.;k 14:, 1890. Serial No. 340,430. (No model.)

To all whom it may concern:

Be it known that I, EUGENE O. LEWIS, of Nashville, in the county of Davidson and State of Tennessee, have invented certain Improvenients in Tools for Crimping Metal Bungs, of which the following is a specification.

At the present day it is the common praetiee to provide sheet-metal vessels with flanged mouths or necks and to close these mouths by applying thereover a peripherallyfianged cap or bung, which is secured in place by crimping its flange inward around the flange or neck of the vessel.

My invention relates to a portable tool or instrument for thus crimping and securing the bungs, and which is also adapted for securing the tops and bottoms of sheet-metal cans to their bodies.

The tool consists, essentially, of a series of crimping-rolls carried by levers on a rotating frame and combined with gearing for imparting a rotary motion, and with automatic devices whereby the levers are operated to close the rollers inward against the periphery of the bung While traveling around the same.

In the accompanying drawings, Figure l is a sectional view of a can and of the bung for closing the same. Fig. 2 is a similar view showing the bung secured in place. a side view of my crimping-tool. Fig. 4 is a front View of the same, looking in the direction indicated by the arrow. Fig. 5 is a seetional view on the line Fig. G is a section on the line 1/ y of Figs. 3 and 4.

Referring to the drawings, A represents a metal bar having its lower end in the form of a round rod or spindle a, while its upper end is flattened and provided witha fixed handle a', which serves as a means of holding the instrument, preventing its rotation, and applying pressure to the bung. At its lower end the spindle a is provided with a fixed circular plate a2, intended to rest on top of the bung in order to hold the same down in place upon the can and to prevent its rotation dur ing the crimping operation.

Bis a sleeve or tube mounted to revolve freely around the spindle a and provided at its upper end with a beveled pinion l), through which it receives motion from a pinion b2, which latter is mounted on a fixed stud Ul Fig. 3 is and provided with a hand-crank b4, the rotation of which imparts a rotary motion to the sleeve or tool. Near its lower end the sleeve is provided with a plate or spider C, fixed rigidly thereto and having in its outer edge the vertical slots to receive three levers c, which are sustained by horizontal pivots c and provided at the lower end with horizontal crimpin g-rolls c2. These rolls may be attached to the ends of the levers by screws, as shown,or irrany other manner which will admit of their free rotation. A plate c is secured to the lower end of the sleeve and provided with notches to receive the lower ends of the levers above the rollers, and this for the purpose of giving the levers lateral support. A spring c in the form of an elastic ring is seated between and y against the lower ends of the three levers and tends to throw them outward, so as to maintain the separation of the rollers.

A cone D is mounted to slide freely upward and downward on the sleeve for the purpose of separating the upper ends of the levers, and thereby causing the lower ends to close inward against the bung. The upper end of this cone has a neck inserted loosely through an arm d and secured by a collar d. The arrn d is attached to the lower end of a rack-bar (Z2, which slides vertically through fixed guide-arms d3 on the side of the bar A. A worm-wheel d4, fixed to and revolving with the sleeve, engages the rack-bar, as shown in Fig. l, so that as'the sleeve rotates the worm causes the rack-bar to descend and carry the cone D gradually downward between the levers, the effect of which is to gradually close the crimping-rolls inward toward the center. The rack-bar is mounted so that it may turn around its longitudinal axis in order to disengage its teeth from the worm-wheel, so that after the cone has been carried down and the crimping operation completed the rack-bar may be disengaged and the cone lifted instantly to its original position. A spiral spring d5, attached at one end to the rack-bar and at the other to the frame, tends to turn the rack out of engagement with the worm-wheel. A finger' or latch d6 is fixed to the upper end of the rack-bar, and the bar A provided in its upper end with a groove di, (clearly shown in Fig. 5,) its upper and lower ends opening laterally through the edge of thebar. lletore the operation commences the latch is turned into the upper end of the groove and, engaging in the vertical portion of the same, holds the rack in engagement. As the cone and rack-bar descend, the latch travels downward in the vertical portion of the groove and maintains the rack in engagement. At the completion of the operation the latch reaches the lower end ot' the groove and releases the rackbar, which is immediately turned by the spring d5 so as to throw the latch out of the bar, whereupon the rack and its connections are lit'ted, asbefore explained.

The manner of using the tool is as follows: A circular peripherally-flan ged bung E is seated looselyover the inclined flange or mouth F on the can. (See Fig. l.) The operator grasping the handle et the instrument seats the plate a at the lower end centrally upon the bung and applies a moderate pressure to hold the bung down in place and to prevent the parts from rotating. lle then revolves the crank l1, holding the t'rame at rest. As a result of this operation the sleeve and its levers causathe rollers to travel around the outer edge of the bung, and at the same time the worm-wheel, through the rack-bar, causes the cone D to gradually descend, separating the upper ends oi' the levers and causing the rollers lo be carried inward toward the center, so that they act to crimp or close the llange of the bung inward tightly around and beneath the mouth ot' the can. This operation continues until the bung is lirmly attached and a close joint produced between it and the can,

after which the latch releases the rack and permits the cone to be lifted, so that the rollers may separate and permit the removal et t-he tool.

In order that the crimping-rolls may be closed to a greater or less extent, I so connect the finger il to the rack-bar that the linger maybe adjusted longitudinally thereon. By adjusting the fm ger at different points on the bar the latter will be released at a lower or higher point in its descent, according to the adjustment of the Hilger. As shown in Fig.

3, the upper extended end of the rendi-liar is threaded and screwed into the end of the arm d, above which a nut di is applied.

lIaving thus described my invention, what I claim is- 1. The hand-tool for crimping bungs, consisting' of the standard A, provided at its upper end with the fixed handle a means oi' applying pressure and preventing rotation of the standard, in combination with the rotary sleeve provided with the driving-pinion, the pinion driving-gear mounted on a journal. on the standard and provided with a hand-crank, the levers pivoted to the rotary sleeve, the rollers mounted on the lower ends of the le vers, the sliding cone encircling the sleeve and acting' between the upper ends ot' the levers, and gearing, substantially as shown, to automatically advance the cone.

2. The bar or standard, the rollers, theirlevers, and the lever-carrying sleeve rcvoluble around the standard, in combination with the crank and gearing to revolve the sleeve, the sliding cone, its rack-bar, and the worm-wheel to actuate the rack, said elements combined substantially as shown.

3. In combination with the standard, the revoluble sleeve provided with the pinion and worm-wheel, the hand-crank and pinion, the levers mounted on the sleeve, their rollers, t-he sliding cone, its controlling-arm, the racl@ bar mounted to turn out of engagement with the wornrwhcel, and the finger to maintain the engagement.

et. In combination with the frame, the ro tary sleeve, its roller-carrying lever, and the sliding cone to operate the levers, the worm and rack to move the eene, and the rack-eontrolling fin ger d, adj ustably connected to the rack, whereby the machine may be adjusted to close the eri1nping-rolls to a greater or less extent.

In testimony whereof l hereunto set my hand, this Zit-h day o'll January, 18210, in the presence of two attesting witnesses.

EUGENIE (l. LEWIS.

lili t nesses:

G. Sirnrlx'rii-i', A. 'I Mensen.

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