US1026456A - Machine for sealing the ends of metallic tubes. - Google Patents

Description

LPPLIGLTIOI FILED-FEB. 19, 1912.

l Patented May 14, 1912.

Hoang ,GEORGE G. RAMBAUD, F NEW YORK, N. 'Y'.

MACHINE FOB SEALINGl THE ENDS 0F vMETALLIC TUBES.

Specification of Letters Patent.

Patented Mayu, 1912.

Application nieu February i9, '1912. vserial No. 678,543.

- To all 'whom t may concern:

chinesfor hermetically sealing or closingl the ends of metallic tubes, by electrically soldering or welding the ends thereof, but 1s chiefly designed to seal the ends of that variety of tubes commercially known as collapsible tubes. One of the principal objects of the invention is to provide an apparatus by means of lwhich the operation of closing and sealing the ends of collapsible tubes may be etlilciently and economically accomplishedand with great rapidity.

`described, illustrated in t-he drawing, and

. With this and other objects in view, the

' invention consists in the general construc-A tion, arrangement and combination of the several parts of the device, as hereinafter more4 particularly pointed out in the claims I a section through the circuit closing hereunto a pended.

In the view of the device, showing the electric circuit for supplying heat, and means for openingv and closing said circuit; Fig. 2 is a vertical cross-section through the base and bedplate, and shows the sealing mechanism in elevation', and the manner of securing the same to said base and bed-plate; Fig. 3 is echa-- nism, and Fig. 4 is a sectional detail f the sealing mechanism.

Referrin to the several views, the numeral 1 in icates a suitable base, Apreferably composed of a metal frame, rectangularv in shape, supported upon legs or su ports 2, and providedfwith inwardly exten ing projections 8. Seated in the base is a bed-plate or block 4, of slate or other non-conducting material, and passing.throughsuitable apertures therein, and directly opposite each other, are twoposts or standards l5, 5, the lower ends of which pass through perforations in the inwardly-extending projections 3, and lbeing 'screw-threaded are secured in f fixed position by nuts 6.

AdJustabl securedon each post 5 isa collar 7, and a ove each collar is a vcoil-spring rawing: Figure 1 is a top plan- 8. Vertically movable on the posts 5, 5, above the springs 8, is a bar 9, to which is secured va plunger 10. The lower end of said plunger is screw-threaded, and the upper end thereof passes threughla perforation in a bar 11, and is provided with a suitable head 12, said bar l1 havingv its ends secured to the posts 5, 5,.as shown. Sui'- rounding each post 5, between the bars 9 and 11, is a coil-spring 18, Aone end of which is secured to the bar 11, and the other end to the bar 9, so that when the pressure necessary to force the plunger downward is removed, the action of the springs 8 will exert Aa pushing-force on the bar 9.and the springs 13 a pulling-force on said bar to return the plunger to its normally elevated position. The numeral 14 indicates a suitable bracket or holder, and is provided in its upper ortion with a screw-threaded seat adapte to -receive and hold the lower screw-threaded end of the plunger 10, as shown; and in its lower portion is provided with a suitable seat adapted to receive and hold a suitable presser-block 15, of any non-conducting and heat-resisting materia, such as porcelain, said block 15 being secured in said bracket 14, by suitable securing means 16, 16, preferably set-screws, as shown. While'I have described the bracket 14 as being secured to the plunger by screw-threads, it is evidentthat said bracket may lbe made integral with said plunger, or secured thereto by other suitable means without departing from the spirit of my invention.

The slate bed-plate 4 is provided with an anvil or block 17, of any suitable non-conducting and heat-resisting material, such as porcelain, and is, preferably, L-shape in cross-section, so as to provide a vertical abutment 18 for the purpose of gaging the extent of sealing of the flattened end of the tube. The anvil 17 is provided with a heater 19, preferably of a slightly flattenednickelchrome wire, the ends of which are connected with binding posts 20, 20.

Situated at any convenient n point on the bed-plate is an electric-switch 22, preferably of the usual knife type, lthe post 23 to which the blade 24 is pivoted, being secured in a perforation passing through said bed-plate. The lower end of the post 23 is provided with clamping bars or plates 25,

25, b n which the main -line wire 26 is cl ped by means of the nut 27 on the lower nd of said l il@ post 23, asl shown. The post 28 with which the blade of the switch is adapted to make contact is in electrical communication with one of the vbinding posts 20 through the conductor 29, the other binding post 2 0, be-

ing connected With the other main line wlre 30, both main line Wires leading to a suitable source of electrical supply, as shown.

In operating my invention I take a tube which has, preferably, been filled, and place the end thereof, which has been flattened in the usual Way, upon the horizontal portion of the anvil, resting on the heater, With its flattened end abutting 'against the vertical portion 18 of said anvil; the svvitch is then closed and the current Will pass over conductor 29 to the heater; pressure is then applied to the plunger to force the presserblock into contact with the end of' the tube resting upon the heater to eHect the sealing by the heat generated in said heater. As soon as the sealing is` completed, which is l` done almost instantly, pressure is removed from the plunger Which is immediately returned to normal position y,by the action of said springs. The sealed tube is then re moved and another placed in position for a soldering agent will not'be necessary, asthe tin coating Will serveas an eiicient unit` ing agent; but When the ends of plain metal tubes are to be soldered a small quantity of solder may be used as the uniting agent. It will also be obvious that the heating circuit may be automatically closed and opened by the fall and rise of the plunger by connect-v ing the switchtherewith, either by lever, or

otherwise. y

lHaving thus described my invention what I claim, is:

1. A machine for soldering the ends of `metal tubes, comprising a fixed anvil of heat-resisting material provided with an electric heater, a gage-stop integral With said anvil for determining the Width of the seam to be soldered, a pressure-block, means for moving said pressure-block, means for supplying a current of electricity to the heater, and a suitable electric switch.

2. A machine'for sealing the ends of metal tubes, comprising a fixed anvil of porcelain provided with an electric heater, a gagestop the width of the seam to be soldered, a plum-- ger carrying a porcelain.presser-block, said plunger being attached to a horizontal bar vertically movable on a pair of supports, compressible springs adapted to return Athe plunger to normal position after having integral With said anvil for limiting been depressed, and means for supplying a current ofelectricity tothe heater.

` 3. A machine for sealing the ends of metal tubes, comprising a fixed porcelain anvil provided with an electric heater, a gagestop integral With said anvil vfor limiting the Width of the seam to be soldered, means for supplying a current of electricity to the heater, a plunger attached to a horizontal bar vertically movable upon supporting-posts, a porcelain presser-block carried by theplunger, compressible and expansible springs for returning the plunger to normal position after having been depressed, and means for opening and closing the electric circuit.

In testimony my hand in presence of two subscribing Witnesses.

, GEORGE G. RAMBAUD, Witnesses:

C. M. BENNETT, L. E. HUGHES.

whereof I have hereunto set

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