US2598114A

US2598114A - Device for marking and ejecting elongated articles

Info

Publication number: US2598114A
Application number: US38722A
Authority: US
Inventors: David I Dilworth
Original assignee: United States Steel Corp
Current assignee: United States Steel Corp
Priority date: 1948-07-14
Filing date: 1948-07-14
Publication date: 1952-05-27
Anticipated expiration: 1969-05-27

Description

32 1952 D. DILWORTH 2,598,114.

DEVICE FOR MARKING AND EJECTING ELONGATED ARTICLES Filed July 14, 1948 4 Sheets-Sheet 1,

D. l. DILWORTH DEVICE FOR MARKING AND EJECTING ELONGATED ARTICLES Filed July 14, 1948 4 Shets -Sheet 2 hzvenlor: 541 0 [Mm/057, 74

y 1952 D. 1. DILWORTH 2,598,114

DEVICE FOR MARKING AND EJECTING ELQNGATED ARTICLES Filed July 14, 1948 4'Sh99tS-Sh66't 3 F|E-:l.' E 29 29 If I! I 1 I fi/s 4/70/0134.

M y 1952 D. I. DILWORTH 2,598,114

DEVICE FOR MARKING AND E*. TE I GTIIIG ELONGATED ARTICLES Filed July 14 1948 4 Sheets-Sheet 4 lib 14/73/0134 Patented May 27, 1952 TENT OFFICE DEVICE FOR MARKING AND EJECTING ELONGATED ARTICLES David I. Dilworth,. Lorain, Ohio, assignor to United States Steel Company, a corporation of New Jersey Application July 14, 1948, Serial No. 38, 722 Y Claims.

This invention relates to improvements in devices. for marking elongated articles, such as pipesor. the like.

An object of the invention is to provide improved devices for marking the sides of elongated articles uniformly and in similar locations on succeeding articles;

A further object of the invention is to provide improved devices for marking the sides of elongatedarticles in which entry of an article-into the device automatically starts the device, which then automatically marks and ejects the article.

A further object of the invention is to provide improved devices for marking the sidesof elongated articles in which entry of an article to a predetermined position in the device automatically starts operation of a marking wheel, which then both marks the article and propels the article-out of the device and resets so that it marks'succeeding articles in similar fashion.

In accomplishing theseand other objects of the invention, I have provided improved details of structure, a preferred form of which is shown in the. accompanying drawings, in which:

Figure 1 is a top plan view of an improved marking device embodying features of the present invention;

Figure 2 is a side elevational view of the device shown in Figure 1;

Figure 3 is an end elevational View of the device shown in Figure 1;

Figure 4. is a vertical sectional view of the device taken substantially on line IV-IV of Figure 3;

Figure 5 is a side elevationalview of a preferred form of marking wheel embodied in the device;

Figure 6 is a vertical sectional view ofthe marking wheel taken substantially on line VIVI of Figure 5; and

Figure 7 is-a wiring diagram of'theprefer ed electrical circuit for operating the device.

Referring more in detail to the drawings:

The marking device of thev present invention comprises a base in which may be mounted on any suitable table or sub-base l2 (Figures 2 and 3). The back portion of the base carries a motor stand [3 which preferably is welded tothe base and is of inverted U-shape in end elevation. The sides of the stand have a series of mounting apertures I4: (Figure 2). Alimit-sw-itch' bracket [dissupported between the arms of the U by suitable fastening means which pass through any of apertures (4-, thus making possible adjustment of the longitudinal position of said bracket. An arm I6- of a normally open limit switch I! is pivoted to said bracket in a position to beengaged by the forward end. ofanelongated article S as it enters the device and'thus to close the limit switch momentarily. A drive motorv [-81 is supported on the top- 0f stand l3 and is positioned by adjustable positioning screws iii.

The forward portion of the base carries uprights 20, 2| and 22, which furnishes mountings for a supporting roll 23; a drive shaft z t-and an adjusting shaft 25 for varying the vertical position of the drive shaft. Preferably the three uprights are similarly constructed and. each includes a boss -25 welded tobase ID, a pair of spaced parallel posts 21 and 28rigidly bolted to said boss; and a cap 29 rigidly bolted to the tops of said posts. 7

Supporting roll 23 is rotatably mounted in a cradle 30 between uprights" 2i! and 2!. Said cradle is resiliently supported 1 on base It. by a spring 31, the compression of which may be varied through an: adjusting screw 32; Stops between the postsofeach upright (Figure 4).

A drive pulley 35 is fixed to the drive shaft-between uprights 2i and 22 and is connected to motor I8 by belts 36, preferably: through suitable speed reducing mechanism embodied in the motor (Figures 1, 2 and'3). A marking wheel 3! is fixed to the drive shaft between uprights 20 and 2| and carries means for stampingor' otherwise marking the sides of articles S. A cam limit switch 38 is connected to the end of the drive shaft. Said switch is supported on a shaft 39 which is outside upright 2,9 and is vertically movable with the-shaft (Figure 3).

Figures5 and6=show the details of a preferred form of marking wheel. The-wheel has 3. 560110! 31A ofrelatively large radius anda sector 31B of smaller radius. Sector 31A is adaptedto re shaft 25 (Figures 3 and 4). Each cap comprises an upper section 40 and a lower section 4| rigidly bolted together. Preferably the caps on uprights and 2! are bridged as shown at 42. The caps on uprights 20, 2| and 22 provide vertical bearings in which spindles 43 are rotatably mounted. The lower ends of said spindles have integral buttons 44 received in T-slots 45 in the upper faces of drive shaft bearings 34. Worm gears 46 have central bores threadedly engaged with spindles 43 between sections and 4| of the caps. Worms 4'! are fixed to the adjusting shaft and mesh with said worm gears. Preferably the end of shaft 25 carries a hand wheel 48.

It is seen that rotation of the adjusting shaft rotates worm gears through worms 41. On account of the threaded engagement between the worm gears and spindles 43, rotation of the worm gears moves the spindles vertically in unison and thus raises or lowers the drive shaft and its bearings. This adjustment varies the spacing between marking wheel 31 and supporting roll 23 and thus adapts the device to receive articles S of differing sizes.

A motor brake 49 is operatively connected with motor [8 (Figure 1). Said brake may be of any suitable design that stops the motor as soon as the circuit is broken.

Figure 7 shows in detail a preferred electric circuit for operating the device. Motor i8 is connected to a power source through lines 58 and 5!, which preferably contain a master switch 52. Brake 49 is connected across lines 50 and 5| in parallel with motor l8 via

conductors

53 and 54. A solenoid 55 of a main line contactor is also connected across lines 5!] and 5! in parallel with the motor and brake via a conductor 56 and either one of two alternative conductors 5! or 58. Line 50 and conductor 53 contain normally open contacts 59 and respectively, which are operated together by solenoid 55.

ductors

51 and 58 contain limit switch I! and cam limit switch 38 respectively.

It is seen that closing of limit switch H, as when the end of an article engages arm it, closes the circuit to solenoid 55 via line 50, conductor 56, conductor 58, switch 11 and line 5!. Contacts 59 and 60 thereupon close and release brake 49 and start motor I8. As soon as the motor starts, cam limit switch 38 closes and thus maintains the circuit through solenoid 55 via conductor 51. Limit switch ll opens as soon as arm l6 swings back. The motor rotates cam limit switch 38 via the pulleys and drive shaft and as soon as the drive shaft turns through one revolution, cam limit switch opens. The motor is thereupon stopped and the brake is again applied.

In operation, an elongated article S, such as a pipe, is inserted into the device and moved in until it strikes arm [6 of limit switch I! closing the latter. As just explained, motor 18 thereupon commences rotating drive shaft 24. The marking wheel 31 in the drive shaft engages the side of the article and propels the article out of the device and applies a mark thereto. The resilient mounting of cradle 30 permits the roll and article to yield when irregularities on the article engage the marking wheel and thus avoids damage to the latter. Engagement of the end of the article with limit switch IT insures that each successive article enters the apparatus the same distance. Since cam limit switch 38 stops after one revolution the device is automatically reset to mark successive articles in similar fashion.

Con-

From the foregoing description it is seen that I have provided an improved and simplified device for marking elongated articles such as pipes or the like. The markings can be applied expeditiously and be uniform and similarly located on successive articles.

While I have shown and described only a single embodiment of the invention, it is apparent that modifications may arise. Therefore, I do not wish to be limited to the disclosure set forth but only by the scope of the appended claims.

I claim:

1. A device for marking and ejecting elongated articles comprising means for movably supporting an article, a rotatable marking wheel spaced above said article supporting means and normally occupying a stationary position in which it clears an article moving along said article supporting means, means for driving said marking wheel, a limit switch spaced longitudinally from said marking wheel and adapted to be engaged by an end of the article supported on said ar-' ticle supporting means after a length of the article equivalent to the longitudinal spacing between said marking wheel and said limit switch passes said marking wheel, said limit switch being operatively connected with said driving means for starting rotation of said marking wheel on engagement of the limit switch by the article, said marking wheel on rotating from its normal stationary position engaging the article and simultaneously marking and ejecting the article by propelling it away from said limit switch, in a reverse direction from its previous movement, and an additional limit switch operated by saiddriving means when said marking wheel rotates back to its normal stationary position for stopping said driving means.

2. A device for marking and ejecting elongated articles comprising a base, uprights fixed to said base, a roll carried by said uprights for movably supporting an article, a rotatable marking wheel carried by said uprights and spaced above said roll and normally occupying a stationary position in whichit clears an article supported on said roll, means for driving said marking wheel, a limit switch spaced longitudinally from said marking wheel and adapted to be engaged by an end of the article supported on said roll after a length of the article equivalent to the longi- {tudinal spacing between said marking wheel and said limit switch passes said marking wheel, said limit switch being operatively connected with said driving means for starting rotation of said marking wheel on engagement of the limit switch by the article, said marking wheel on rotating from its normal stationary position engaging the article and simultaneously marking and ejecting the article by propelling it in the opposite direction away from said limit switch. and an additional limit switch operated by said driving means when said marking wheel rotates back to its normal stationary position for stopping said driving means.

3. A device for marking and ejecting elongated articles comprising a base, uprights fixed to said base, a roll resiliently carried by said uprights for movably supporting an article, a drive shaft spaced above said roll, bearings carried by said uprights for vertical adjustment and rotatably mounting said drive shaft, an adjusting shaft rotatably carried by said uprights and spaced above said drive shaft, gears and spindles operatively connecting said adjusting shaft and said bearings for adjusting the spacing of said drive shaft above said roll, amarking wheel carried by said drive shaft and normally occupying a stationary position in which it clears an article supported on said roll, means for rotatably driving said drive shaft and said marking wheel, a limit switch supported by said basefand spaced longitudinally from said marking wheel and adapted to be engaged by an end of the article supported on said roll after a length of the article equivalent to the longitudinal spacing between said marking wheel and said limit switch passes said marking wheel, said limit switch being operatively connected with said driving means for starting rotation of said drive shaft and said marking wheel on engagement of the limit switch by the article, said marking wheel on rotating from its normal stationary position engaging the article and simultaneously marking and ejecting the article by propelling it in the opposite direction away from said limit switch, and means automatically stopping said driving means when said marking wheel rotates back to its normal stationary position.

4. A pipe marking and ejecting device comprising a base, uprights fixed to said base, a roll carried by said uprights for movably supporting a pipe, a drive shaft spaced above said roll, bearings carried by said uprights for vertical adjustment and rotatably mounting said drive shaft, an adjusting shaft rotatably carried by said uprights and spaced above said drive shaft, gears and spindles operatively connecting said adjusting shaft and said bearings for moving said bearings and said drive shaft vertically and thereby varying the spacing between said drive shaft and said roll to accommodate different sizes of pipe, a markingwheel carried by said drive shaft and normally occupying a stationary position in which it clears a pipe supported on said roll, means for rotatably driving said drive shaft and said marking wheel, a limit switch supported by said base and spaced longitudinally from said marking wheel and forming a stop adapted to be engaged by a pipe moving past said marking wheel on said roll, said limit switch being operatively connected with said drive means for starting rotation of said drive shaft and said marking wheel on engagement of the limit switch by the pipe, said marking wheel on rotating from its normal stationary position engaging the pipe and simultaneously marking and ejecting the pipe by propelling it in the opposite direction away from said limit switch, and means automatically stopping said driving means when said marking wheel rotates back to its normal stationary position.

r Number 5. A pipe marking and ejecting device comprising a base, uprights fixed to said base, a roll resiliently carried by said uprights for movably supporting a pipe, a drive shaft spaced above said roll, bearings carried by said uprights for vertical adjustment and rotatably mounting said drive shaft, an adjusting shaft rotatably carried by said uprights and spaced above said drive shaft, gears and spindles operatively connecting said adjusting shaft and said bearings for moving said bearings and said drive shaft vertically and thereby varying the spacing between said drive shaft and said roll to accommodate different sizes of pipe, a marking wheel carried by said drive shaft and normally occupying a stationary position in which it clears a pipe sup ported on said roll, a stand on said base spaced from said uprights, a motor carried by said stand and operatively connected with said drive shaft, a limit switch carried by said stand and forming a stop spaced longitudinally from said marking wheel and adapted to be engaged by a pipe moving past said marking wheel on said roll, said limit switch being operatively connected with said motor for starting rotation of said drive shaft and said marking wheel on engagement of the limit switch by the pipe, said marking wheel on rotating from its normal stationary position engaging the pipe and simultaneously marking and ejecting the pipe by propelling it in the opposite direction away from said limit switch, and means automatically stopping said motor when said marking wheel rotates back to its normal stationary position.

DAVID I. DILWORTH.

REFERENCES CITED Zhe following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Bertram Aug. 6, 1889 Payne Feb. 16, 1937 Weymouth Apr. 12, 1938 Ferguson Sept. 5, 1939 Pierce Sept. 17, 1940 Lacy-Hulbert Aug. 5, 1947 Kagley Aug. 12, 1947 Wutscher May 18, 1948 Robbins May 10, 1949 FOREIGN PATENTS Country Date Great Britain Jan. 5, 1937 Number