US1159853A - Machine for making arbors for incandescent lamps. - Google Patents

Description

H. D. MADDEN. MACHlNE FOR MAKING ARBORS FOR INCANDESCENT LAMPS.

- APPLICATION FlLED DEC. 5. 1910. 1,159,853. Patented Nov. 9, 1915.

5 SHEETS-SHEET 2.

Big. 2.

WITNESSES:

H.D.MADDEN MACHINE FOR MAKING ARBORS FOR INCANDESCENT LAMPS.

APPLICATION FILED DEC. 5. 1910.

1,1 59,858. Patented Nov. 9, 1915.

5 SHEETS-SHEET 3- INVENTOR WITNESSES: S I

' ATTORNEY H. D. MADDEN.

MACHINE FOR MAKING ARBORS FOR INCANDESCENT LAMPS. APPUCATION FILED 050.5,1910.

1,1 59,853, Patented Nov. 9, 1915.

5 SHEETSSHEET 4.

WITNESSES: g INVENTOR WSW H. D. MADDEN. MACHINE FOR MAKING ARBORS FOR INCANDESCENT LAMPS.

APPLICATION FILED DEC-5,1910.

Patented Nov. 9, 1915.

5 SHEETSSHEET 5.

INVENTOR 1 WM AT-TORNEY WITNESSES: @MV/ (Que g, MW

HARRY I). MADDEN, OF BLOOMFIELD, NE

W JERSEY, ASSIGNOR T0 WESTINGHOUSE LAMP COMPANY, A CORPORATION OF PENNSYLVANIA.

MACHINE FQR MAKING AIR-BORS FOR IN CANDESCEN T LAMPS.

Specification of Letters Patent.

Patented Nov. 9, 1915.

Application filed December 5, 1910. Serial No. 595,633.

To all whom it may concern.

Be it known that I, HARRY D. MADDEN, a' citizen of the United States, and a resident of Bloomfield, in the county of Essex and State of New Jersey, haveiinvented a new and useful Improvement in Machines for Making Arbors for Incandescent Lamps, of which the following is a specification.

My invention relates to machines used in the manufacture of incandescent lamps, and it has for its object to provide a machine whereby glass rods that are adapted to be used as arbors in incandescent lamps may be provided with beads or buttons into which filament supports or anchors may be inserted.

Figure 1 of the accompanying drawings is a view in transverse section and in side elevation of a machine that is constructed in accordance with the present invention. Fig. 2 is a view in front elevation of the same machine. Fig. 3 is a plan view of some of the top parts of the machine, viewing ,the same at an angleof 45 to the vertical and horizontal. Fig. 4 is a plan and sectional view of certain of the parts of the machine upon the line IVIV of Fig. 1. Fig. 5 1s a similar view of other parts of the machine upon the line VV of Fig. 1.

The operating parts of the machlne are carried by a hollow base 1 and a standard that is mounted upon the base and comprises vertical rods or posts 2, a top bracket 3 and an intermediate bracket 4, the brackets being supported by the posts. The base 1 and the bracket 3 are provided with lateral bearings 5 and 6, respectively, for a main yert cal shaft 7 upon the lower end of which 1s loosely mounted a driving pulley 8 to whlch power may be applied from any suitable source and the upper face of the hub of which is provided with bosses and intervening recesses constituting a clutch member Keyed to the shaft 7, so as to be longitudinally movable thereon, is a corresponding and opposing clutch member 10 that is adapted to be moved into and out of engagement with the clutch member 9 by means of a lever 11, one end of which is pivoted to the base 1 and the free end of which 1s'provided with a thumb nut 12 for locking the lever in clutch-engaging or disengaging position.

The shaft 7 is operatively connected, by means of bevel gears 14 and 15, to a short inclined at an horizontal shaft 16 for which bearings 17 and 18 are provided in the base 1, the said shaft carrying two cams 19 and20. Bearing upon the edge of the cam 19, is a roller 21 that is carried by a member 22 having a slot through which the shaft 16 projects, the said member being attached to the lower end of a vertical rod 23, the upper end of which is connected to a lever 24, the function of which will be hereinafter more fully set forth. The roller 21 is maintained in engagement with the cam 19 by means of a helical compression spring 25 that surrounds the rod 23 and is interposed between a stop 26 carriedby the said rod 23 and the base 1 and is also inclosed by a sleeve 27 formed integral with the base 1.

Bearing upon the edge of the cam 20, is a roller 28 that is mounted in the lower end of a vertically extending rod 29. The rod 29 is adapted to' reciprocate in a guide sleeve 30 carried by the base 1 and it is surrounded, within the said sleeve, sio-n'spring 31, that is interposed between the shoulders, respectively on the sleeve 30 and on the rod 29, and serves to maintain the roller 28 in engagement with the cam 20. The upper end of the rod 29 is provided with a central bore for the reception of another rod 32, upon the upper end of which is formed a head 33 constituting a stop or rest for the rods of glass upon which the machine is adapted to'form beads or buttons.

The upper end of the main shaft 7 is operatively connected, by means of bevel gears 36 and 37, to a short shaft 38 that is angle of approximately 45 to the vertical and horizontal and is provided with a bea ing carried by a small bracket 39 which is mounted upon the bracket 3. At its upper end, the shaft 38 carries a'cam 40, which, once every revolution, engages a roller 41 mounted at the end of one of the arms of a lever 42 that is loosely mounted upon the lower end of another short inclined shaft 43, the lever 42 being thereby moved through a predetermined angle at each revolution of the cam 40. The shaft 43 is provided with a bearing 44 that is formed integral with an inclined plate 45 carried by the bracket 3 and, rigidly secured to its lower end, is a ratchet 46 that is engaged by a pawl 47 carried by the lever 42. The pawl 47 is maintained in by a helical compresthe ratchet 46 by means of the lever .42 is normally engagement with a spring 48, and

maintained in the position shown in Fig. 3'

Mounted upon the upper end of the shaft 43, is a cone-shaped wheel or member 53 having grooves or recesses 54 extending in the directions of elements thereof, said grooves being adapted to receive the rods upon which beads or buttons are formed by the machine. Mounted above the coneshaped wheel or member 53, with its lower narrower open end closely adjacent to the upper horizontal face of the said wheel, is a hopper 55 that is adapted to contain the rods constituting the material upon which the machine operates, the said rods being fed, one by one, as the wheel is rotated, into the grooves or recesses therein. It will be obvious that rods of greater length than the hopper cannot be fed into the machine, a greater uniformity of the product being thus insured. The rods are maintained in the slots or recesses in the wheel 53, during approximately a half revolution thereof, by means of a frusto-conical shaped plate 56 that is secured to the plate 45 and fits the surface of the wheel 53 rather closely. It will be understood that the wheel 53 is advanced intermittently, by the cam 40, through angular distances equaling the an gular distances between the grooves or recesses in the face thereof.

As .the glass rodsare brought, by the wheel 53, from a horizontal position, in which they lie in the hopper 55, to a vertical position, they are dropped through a slot 58 in the edge of the plate 45 into the upper flared end of a vertical tube 59, and, from thence, upon the rest 33. The upper end of the tube 59 is pivotally connected to the lever 24 that is actuated by the rod 23, and its body portion is surrounded by a sleeve 60 that is capable of reciprocation within another sleeve or member 61 carried by the bracket 3. A helical compression spring 62 is interposed between a shoulder on the sleeve 61 and a stop 63 that is attached to the upper end of the sleeve 60, the said parts being thereby'normally maintained in the positions shown in Fig. 1. Secured to the lower end of the sleeve 60, is a tubular shell 64 having a conical lower end within which clutch members 65, having shoulders 66 upon their inner edges, are suspended, by means of links 67, from the lower end of the tube 59. The said parts constitute a clutch or chuck through which the glass rods may drop freely when the parts thereof occupy the positions shown in Fig. 1. but which grips the upper ends of the said rods when the members 65 are dropped upon the moved downwardly and toward each other by the operation of the lever 24, the upper ends of the rods being engaged by the shoulders 66 upon the clutch members 65, so that, as the sleeve 60 and the member 64 are moved'downwardly, the glass rods are compressed longitudinally. It will be understood, from an inspection of Fig. 1, that the first part of the downward movement of the lever 24 causes the clutch members 65 to move inwardly and engage the upper end of the rod, and that, subsequently, the lever 24 engages the stop 63, carried-by the sleeve 60, and forces the said. sleeve downwardly. In order to accentuate the positions of the sleeve 60, the said sleeve is provided with suitably spaced circumferential recesses 68 and 69 intowhich a block or piston 70 is forced by means of a helical compression spring 71.

Immediately after the glass rods are rest or stop 33, they are gripped by a pair of horizontal jaws 7 4 that are pivotally secured to the bracket 4 and are provided with gear teeth 7 5 which engage and cause the jaws to operate simultaneously and similarly. The jaws are normally maintained closed by means of a ring shaped spring 76, and they are caused -to separate by means of a cam 77 carried by the main shaft 7 and adapted to engage with aroller 78 carried by one of the jaws 74.

Immediately after the jaws 74 are separated to release the rods, they are ejected therefrom by means of an ejector arm 79 that is carried at one end of a horizontal longitudinally reciprocable rod 80 for which a guide bearing is provided in the bracket 4. The said rod and ejector arm are normally maintained in the positions shown by means of a spring 81 and are advanced against the action of the said spring to eject the rods by'means of a cam 82 that is carried by the main shaft 7.

As the rods are ejected from the jaws 74, they are dropped upon a guide or slide 84, with the buttons formed near the upper ends thereof engaging the upper edges of the said guide and supporting the rods in a horizontal vertical position. The said guide consists of a doubled piece of strap material having its ends spread apart and attached to the two front posts 2 of the machine and its adjacent side portions parreceptacle. The object of the guide as thus constructed is to provide means for maintaining the rods in an erect or vertical position until cooled to such a degree that they will not bend when finally discharged from the machine.

The glass rods are heated, at the points where it is desired to make the enlargements constituting the beads or buttons, by means of two sets of burners 88 and 89, respectively, the burners88 being adapted to direct flames upon the rods directly above the jaws 74, and the burners 89 being adapted to direct flames upon the rods at their lower ends and a short distance above the rest 33. The burners 88 and 89 are supplied with gas and air through an economizer 90,'by means of which the supply of air to the burners is cut off and the supply of gas is reduced during the periods when the rods are being fed into the jaws 74 and removed therefrom.

The economizer comprises a block 91 that is provided with a vertical tapered aperture extending entirely therethrough and containing a rotatable tapered plug 92. Two horizontal passages 93 extend from one edge of the block 91 inwardly to the vertical tapered aperture, and inlet pipes 94 and 95, respectively for air and gas, are threaded into the said passages. The block 91 is also provided, in a horizontal plane with the passages 93, with drillings 96 that ex tend laterally from both sides of the vertical tapered aperture therein, and with other horizontal drillings 97 that connect the drillings '96 with other 'vertical drillings 98 located near the corners of the block and into which outlet pipes 99 are threaded, the said outlet pipes leading, respectively, to the two sets of burners 88 and with the two sets of horizontal passages and drillings in the block, with horizontal or lateral drillings 100- arranged to form two T-shaped passages therethrough and adapted, when the plug is in proper position, to connect the passages 93 with the drillings 96. Upon the lower end of the plug '92, is mounted a lever 101, that is normally maintained in a position corresponding to a full supply ofgas and air to the burners by means of a spring 102, and is provided at the extremity of one of its arms with a roller 103 that is interposed in the path of movement of a cam 104 carried by the main shaft 7, the cam being of such a shape as to periodically operate the plug 92 in order to govern the supply of gas and air as above set forth. The proportions of 'air and gas in the mixturemay be adjusted by means of rods 105 that are threaded into the block 91 in alinement with the drillings 97 and are adapted to regulate the effective areas thereof.

sition as to cause rod.

The plug 92 is provided, in a plane.

In the operation of the machine, the hopper 55 is filled with glass rods which drop one at a time, into the grooves or recesses in the conical wheel 53 and are brought thereby from a horizontal position into a vertical position, the said wheel being. actuated only periodically so as to feed the rods at the roper intervals. As the rods are brought into a. vertical position, they are dropped, through the notch 58 in the plate 45, and through the tube 59, upon the rest 33, their uooer ends still extending into the lower end of the member 64. At the time the rods are drop ed, the cam 77 engages the roller 78 and the jaws 74 are accordingly opened sufliciently to permit the rods to drop between them. Upon a little further rotation of the main shaft 7, the cam 77 disengages the roller 78 and the mitted to tightly grip the rod that has been fed andfirmly hold it in position. Until the jaws 74 have been closed upon the rod, the economizer 90 occupies such a position jaws 74 are then peras to cut off the supply of alr, and to partially cut off the supply of gas, to the burners 88 and 89, but, when the jaws have closed, the economizer is operated so as to permit a full supply of gas and air to the burners-and the rod is thus heated. After a time, the cam 19 is brought to such apothe rod 23 to be drawn downwardly, with the result that the lever 24 actuates the tube 59 and causes the clutch members 65 to grip the upper end of the After another period of heating, the cam 19 causes the rod 23 to be drawn down still farther, with the result that the-upper end of the lever 24 engages the upper end of the sleeve 60 and causes the parts 60, 64 and 65 to move downwardly a short distance, thereby compressing the rod longitudinally and causing a lateral expansion thereof where it is heated directly above the jaws 74. Approximately at the same time, the cam 20 causes the rest 33-to be raised, and the glass rod is also compressed between the jaws 74 and the said rest, causing a lateral enlargement thereof at the point where it is heated. After still further heating of the rod, the cams 19 and 20 cause additional compression thereof upon both sides of the jaws 74, with the result that the enlargements previously made are enlarged and beads or buttons of the desired diameter are thereby formed. Upon still/ further rotation of the main shaft 7 and of the cams 19 and 20, the parts 59, 60, 64 and 65 are raised and the rest 33 is lowered and the jaws 74 are opened, followed by the forward movement of the ejector 79, which throws the completed arbor-outwardly upon the guide 84, the glass rod being now so contracted in length as to permit it to clear the member 64. Just previous to the ejection of the arbor from the jaws 74, the economizer cuts oif the supply of air and partially cuts off the supply of gas. The operation continues as above set forth for each rod.

I claim as my invention:

1. A machine of the character described comprising a rest for the rods, a clutch adapted to engage the upper ends of the rods, a clamp adapted to engage therods at an intermediate point, means for locally applving heat to the rods, and means for actu ating the rest and the clutch to compress the rods upon both. sides of the clamp and to thereby enlarge the locallv heated ortions thereof.

2. A machine of the character described comprising a clamp for the rods to be operated upon having separable jaws, means for locally applying heat at a point between the ends of the rods, means compressing the rods to cause enlargement thereof at the locally heated portion or portions thereof, and means for actuating the clamp to periodically grip and release the rods.

3.'A machine of the character described comprising a rest for the rods to be operated upon, a clutch adapted to engage the upper ends of the rods, means for locally applying heat to the rods, and means for moving the rest and the clutch in alinement to ward and away from each other.

4. A machine of the character described comprising a rest for the rods to be operated upon, upper ends of the rods, a clamp for the rods, means for locally applying heat to the rods, means for moving the rest and the clutch toward and away from the clamp, and means for periodically opening and closing the clamp.

5. A machine of the character described means for locally applying for longitudinally a clutch adapted to engage the I comprising a rest for the rods to be operated upon, a clutch adapted to engage the upper ends of the rods, a clamp for the rods, heat to the rods, means for moving the rest and the clutch toward and away from the clamp, means for periodically opening and closing the clamp, and means for ejecting the rods from the clamp when it is open.

6. A machine of the character described comprising a clamp for the rods to be operated upon, means for locally applying heat to the rods, means for causing enlargements thereof at the locally heated portion or portions, and means for ejecting the rods from the clamp when it is open, and an inclined slotted receiver adjacent to said clamp.

7. A machine of the character described comprising a. guide for the rods to be oper ated upon, a hopper, means for intermittently feeding rods from the same into the guide, a clamp for the rods having separable jaws, means for locally applying heat to the rods at a point intermediate the ends thereof, and means for compressing the rods longitudinally so as to cause enlargement thereof at the locally heated portion or portions.

8. A machine of the character described com rising a hopper having a slotted outlet, a feed device having a conical recessed face ad acent to said outlet, means for retaining articles in said recesses, and means for rotating said feed device.

In testimony whereof, I have hereunto subscribed my name this 23rd day of November, 1910.

HARRY D. MADDEN. Witnesses:

OTTO S. SGHAIRER, Cnannss E. KELLY.

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