US1070035A - Machine for hot-lacquering metal tubes. - Google Patents

Description

R. L. HORRELL. MACHINE FOR HOT LAGQUBRING METAL TUBES.

APPLICATION rum) JAN. 6, 1913. 1,070,035, Patented Aug. 12, 1913.

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R. L. HORRELL.

MACHINE FOR HOT LAOQUERING METAL TUBES.

APPLICATION FILED JAN. 6, 1913.

LOYQ035, Patented Aug. 12, 1913.

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MACHINE FOR HOT-LACQUERING METAL TUBES.

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Specification of Letters Patent.

Patented Aug. 12. 1913.

Application filed January 6, 1813. Serial No. 7%,543.

To all whom it may concern: e Be it known that 1, ROBERT LEONARD HOB-BELL, a subject of the King of Great Britain, residing at La Garenne-Colombe, inthe Republic of France, have invented certain new and useful Improvements in Machines for Hot Lacq uering Metal Tubes, of which the following is a specification.

This invention relates to a machine for lacquering metal tubes and similar objects which have to be heated before the coating of lacquer is applied. At present the lacqueringof such objects is effected by hand, by means of a brush; this manipulation is difficultto execute as it requires skilled labor and is a slow process One of the dithculties connected with this kind of work results from the necessity to heat the objects before they are lacquered and further from the fact that said objects, after the lacquer has been applied, must not be touched until the coating of lacquer is cold.

According to this invention the application of the lacquer is efiected mechanically and all expert labor suppressed. The tube in being continuously rotated, is heated by means of a Bunsen burner which moves parallel with the axis of the tube, said tube being coated with lacquer by means of a spraying apparatus which also moves parallel with thetube together with said burner. The manipulation of the tube is facilitated by aspecial. handlewhich enables the tube being picked up, inserted in the machine and instantaneously rotated, and removed from the machine when lacquered, without being otherwise handled. c

The invention is shown by way of example in the, accompanying drawings.

Figure 1 is a parallel front elevation of themachineTf Fig. 2 shows on a larger scale and in se ction the handle for manipulating the tube." Fig; 3 represents in elevation the spindle whichis designed to carry one end of the tube; Figs. 4 and 5 show the sliding puppet on a larger scale, in horizontal and 1 vertical section respectively.

' The machine essentially consists of a lathe a comprising" the driving mechansm b for the movable "slide, a fixed puppet c, a slid- I ing puppet cl a screw 6 and a carriage f.

The-fixed puppet c has a center 9 with a cylindrical part of small diameter adapted to engage mto the tube to be lacquered. The

sliding puppet d is designed to receive the conical rear part of the back-center h. Theback-center h which carries a handleis shown in Fig. 2 in section and in natural size. The back-center h fixed upon the handle k has a horizontal sleeve 6 designed to receive a spindle m which is inserted into one end of the tube to be lacquered. I,

the point of a set screw p screwed into the sleeve 2'. The pointed end of saidspindle m' bears against a steel disk 9 located in said sleeve 71 so that the spindle can freely revolve in said sleeve.

The carriage f is adapted to slide in either direction along two rods 9" parallel with the axis of the lathe, it'is connected in any convenient manner with a nut s adapted to move along the screw 6 when said screw is in rotation. The motion of the screw 6 is controlled by a reversible clutch. Upon the carriage there are fixed in any convenient manner a spraying apparatus t containing the lacquer, burner 14 which is connectedby means of a tube 2; with a gas main.

In the sliding puppet d a rod w is located which has a holloww at one end designed to'receive the end of the back-center h. The

other end of said rod 11: is hinged to the middle of a lever y. This lever 31 can pivot around a pin z fixed upon one end of a link 2 the other end of which-is hinged upon the sliding puppet d. The lever y is connected with said rod 'w through the intermediary of a sleeve 3' and of a spiral spring 4 surrounding the rear end of said rod. Upon the slidand a Bunsen in puppet d a segment 11 having a series I 0 holes 5 is fixed, said holes serving to re ceive a catch pin 6 fixed at the end of a small lever 7 pivotally mounted upon the handle of the lever y and havin its end 8 situated directly over said hand e 901 the lever 11 A spring 10 isarranged between said handle 9-and the end 8 of the lever 7 .for continuously maintaining the catch pin 6 in engagement with one of the holes 5.

The machine operates in the following manner :The' spindle m is inserted into one end of the tube 12 to be lacquered, this tube can then be freely manipulated by holds ing the handle 70. The other end of tube 12 is then pushed over the center 9 of the fixed puppet, the rod w being pulled back by means of the lever y .so that the hollow m 'of said rod can engage with the back-center 12. By operating the lever 1 the spring 4 presses the movable rod w against the end of the back-center h whereby the tube 12 is securely fixed in its position. The pressure exerted by the rod 10 upon the backcenter 72 is regulated by varying the posi tion of the lever 3/ by means of the catchpin 6. When the lathe is operated the tube 12 rotates continuously. The burner 'u is then set in motion along the tube 12 so as to heat the same from one end'to the other. When the carriage or slide has arrived at the end of the tube the spraying apparatus 2- is operated and the motion of the slide is reversed and the latter brought back to its initial position; the burner continuing to operate all the time. The tube 12 is thus completely coated with lacquer. By pushing against the handle 9 of the lever y the back-center is released and the hot and lacquired tube can be removed from the machine by means of the handle is. All the manipulations are executed without touching the tube 12 with the hands.

Having thus described my invention what I claim is C 1. Machine for lacquering metal tubes comprising in combination with a lathe, a fixed puppet serving as abutinent for one end of the tube to be'lacquered, a sliding carriage, a Bunsen burner and a spraying apparatus containing lacquer mounted upon said sliding carriage, a sliding puppet, a back-center in said shding puppet carrying the other end of the tube to be lacquered, a handle of said back center, and means for fixing said back-center-. in position, substantiallyas described andshown and for the purpose set forth.

2. Machine for lacquering metal tubes comprising in combination with a lathe, a fixed pu pet, serving as abutment for one end of ta tube to be lacquered, a sliding carriage, a Bunsen burner and a spraying apparatus wntaining lacquer mounted upon said carriage, a. sliding puppet, :1

back-center for carrying the other end of said tube, a handle of said back-center, a

horizontal sleeve projecting from said backcenter, a spindle in said sleeve having a circular groove, a screw screwed in said sleeve and projecting into said groove of the spindle, an annular flange of said spindle hearing against the end of the tube to be lacquered, a point at the rear end of Said spindle, a steel disk in said sleeve against which bears the point of said spindle, substantially as described and shown and for the purpose set forth.

3. Machine for lacquering metal tubes comprising in combination with a lathe, a fixed puppet serving as abutment for one end of the tube to be lacquered,'a sliding carriage, a Bunsen burner and a spraying apparatus containing lacquer mounted upon said sliding carriage, a sliding puppet, a back-center in said sliding puppet, carrying the other end of the tube to be lacquered, a handle of said back-center, a rod movably mounted in said sliding support and having a hollow at'the front end for the reception of said back-center, a short sleeve upon the rear end of said rod, a spiral spring surrounding the rear part of said rod and bearing against a shoulder of the rod and against said sleeve, a lever fixed upon said sleeve, a link hingedly mounted with one end upon said sliding puppet, a pivot pin at the other end of said llllk to which one end of said lever is pivoted, a segment with a series of holes fixed to the sliding puppet and a spring influenced catch fixed to the handle of said lever and adapted to engage with one of said holes, substantially as described and shown and for the purpose set forth.

In witnes'swhereof I have hereunto set my hand in the presence of two witnesses. ROBERT LEONARD HORRELL. Witnmes:

Hanson C. (10x11,

Fnar.

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