US857856A

US857856A - Magnetic drawing apparatus for pipes, &c.

Info

Publication number: US857856A
Application number: US35918507A
Authority: US
Inventors: George Baehr; Harry B Lynch
Original assignee: National Tube Co
Current assignee: National Tube Co
Priority date: 1907-02-25
Filing date: 1907-02-25
Publication date: 1907-06-25
Anticipated expiration: 1924-06-25

Description

No. 857,856- PATENTBD JUNE 25, 1907. G. BAEHR & H. B. LYNCH. MAGNETIC DRAWING APPARATUS FOR PIPES, 8w.

APPLICATION FILED FEB. 25, 1907.

4 SHEETS-SHEET 1.

- wr rn ESSES No. 857,856. PATENTED JUNE 25, 1907. G. 'BAEHR & H. B. LYNCH. MAGNETIC DRAWING APPARATUS FOR PIPES, 6w.

APPLICATION FILED FEB. 25, 1907- 4 SHEETS-SHEET 2.

INVENTORS WITNESSES I No.'857,856. PATENTED JUNE 25, 1907.

A G. BAEHR & H. B. LYNCH. MAGNETIC DRAWING APPARATUS FOR PIPES, &c.

APPLICATION FILED FEB. 25, 1907.

4 SHBETSSHBET 3.

mvzm'oris WITNESSES PATENTED JUNE 25, 1907.

4SHEETSSHEET 4 G. BAEHR & H. B. LYNCH.

APPLICATION FILED F3125, 1907.

MAGNETIC DRAWING APPARATUS FOR PIPES, 820..

WITNESSES Ll.ll. \lllTED PATENT PEN N SYLVAN TA, ASSIGNORS TO N ATlON AL TUBE COMPANY, OF PITTS- BURG, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

llflAGNETlC DRAWENG APFARATUS FUR PEPE-Si 419.,

Specification of Letters Patent.

Patented June 25, 1907.

Application filed February 25,1907. serial No. 359,185.

1'0 all whom it may concern:

Be it known that we, Gnonon Briana, of Mclhiees ort, Allegheny county, Pennsylvania, an lIARRY B. Lyrics, of Versailles,

Allegheny county, Pennsylvania, have invented a Magnetic Drawing Apparatus for Pipes and other Objects, of which the followii]. is a full, clear, and exact description,

re erencc being had to the accompanying 1o drawings, forming part of this specification,

in which Figure 1 is a side elevation, partly in section of drawing apparatus embodying our invention; Fig. 2 is a plan view of the upper portion of the same showing the actuating motor; Fig. 3 is a plan view of the lower portion of the same, and showing the carriage or trolley; Fig. 4 is a view similar to Fig. 1, but showing a modification; Fig. 5 is an end view of one form of magnet; Fig. 6 is a side view of the same nartly broken away; and

Fig. 7 is a wiring iagraniof the motor and magnet coils and the controlling switches therefor.

Our invention has relation to magnetic drawing apparatus, and although useful for other purposes, is particularly designed for use in drawing ipes in bundles or bunches from tanks or 0t ier receptacles. v

The object of our invention is to provide means whereby either a small or a large numher of pipes or other articles may be simultaneously withdrawn from a tank or elsewhere by the act-ion of a magnet; and our invention consists in the novel construction, arrangement and combination of parts all substantially as hereinafter described.

Referring to the accompanying drawings, the numeral 2 designates a track or run-way 4 whose upper end is pivoted at 3 to a wall or other-sup ort 4, and Whose lower end portion over iangs a tanlr 5, its intermediate portion havin supports The track or run-way may be conveniently formed by an I-beam, the flanges of which form tracks for ;'the wheels 6 of a carriage or trolley 7 consisting of side frames having bearings 8 in which the shafts 9 of the wheels 6 journaled.

Supported by depending portions of the trolley frame is a lifting magnet 10 to which is connected 8. cable 11 which in turn connected to a winding drum 12 at the upper portion of the run-way. This drum 12 is arranged to be actuated by an electric motor 13 through the train of'gcar ll, 15, 16, 17, 18 and 19. The magnet 10 is ener ized by the coils 20 on the core 21. The li ting face of the magnet is preferably composed of a series of pole pieces 22 of alternate polarity, as shown in Fig. 5, the air aps between adjacent pole pieces being of less width than the diameter of the pieces to be lifted. This construction provides a magnet which is especially adapted to the pur ose, owing to the approximately uniform ist-ribution of the lines of magnetic force through the several pole pieces, and owing to the narrow air gaps which revent the ends of the pieces from entering between the pole pieces. Other forms of magnets may, however, be employed.

23 designates a clamping plate of magnet c material which is pivoted to the magnet at 24;, and is designed to be attracted thereby so as to bind upon the series of pipes and assist the lifting action of the magnet. 25 is a sta-. tionary trip piece secured to the track or run-way 2 near its lower end for the purpose of throwing this clamp 23 upwardly to perniit the magnet to engage the ends of the pipe, as shown in Fig. 1. As soon as the carriage starts to move up on the run-Way, the short arm of the clamping plate which has been in engagement with this trip moves out of contact therewith, and the magnetic force of the magnet brings the clamping plate into contact with the top of the bundle of ,ipes.

-26 is a bufier spring and 27 a ollower seated against such spring, and arranged to be engaged by the carriage 7 to check its downward movement.

28 is en apron of non-magnetic material which is secured to the lifting end of the magnet, and which forms a support for the end portions of the pipes being lifted.

29 designates a hinged stop device secured to the track 2 near i s upper end. This device is arranged to permit the frame of the trolley carriage to pass thereunder in its upwerd movement, in case the operator sho d not stop the motor in time, but will drop baci; to form a loci: to prevent the descent of the carriage.

\ 30 indicates a roller or oth r support be- I oo v of the motor and magnetcoils.

low the runway, actuated by a power cylinder 31, and upon which the pipes are arranged to be lowered when they are disengaged from the magnet.

32 indicates the wires or conductors strung along the track 2 by means of which the magnet coils are energized, said wires or conductors being engaged by trolleys 33.

The operation of the device is as follows The carriage 7 is run down the track to the position indicated in Fig. 1. The bundle of pipes in the tank is then raised by any usual means, (such as the lifting device 34 shown in Fig. 4) int?) position to be attracted by the magnet. The motor 13 is then operated to wind up the cable 11 and draw the carriage upwardly on the track, thereby drawing the bundle of pipes out of the tank. The roll or support 30 is then raised and the pipes drop thereon by de-jenergizing the magnet coils.

In the modification shown in Fig. 4, the track or run-way 2 is shown as ivo'ted at 2", its upper end being adjustab y guided as shown at 35. A motor 36 mounted upon a stand or support 37 is geared to a crank shaft 38 whose crank 39 is connected by link 40 with the track or run-way at the point 41. In this modification after the pipes-have been engaged with the magnet and me being drawn out'of the tank, the motor 36 is actuated to swing the run-way on the pivot 2 to a substantially horizontal position to facilitate the dropping of the pipes onto a conveye'r .42. In Fig. 7, I have shown a wiring diagram In this diagram 3 designates the armature of a compounwound motor, 44 the series field coils, 45 the shunt field coils, and ifi the coil srof the usual solenoid brake 17 ofthe motor: The

. controller shown is a double voltage controller having connections with the line wires 48, 19, and. 51 having differential voltages such as indicated. The movable arm 52 of the controlling switch has two positions, an up position',-and a down position, whereby difierent speeds of the motor may be obtained, it being desirable to run the motor on a higher voltage while the carriage is moving downwardly to the-lower end of the track.

53 designates the relatively-fixed contacts of the magnet switch or controller, 54 a group of relatively-movable contacts and 55 a second group of relatively-movable contacts. The contacts 53 and 5 1-when en aged connect the magnet coils 20 in circuit etween the

line wires

48 and 51, while the contacts 53 and 55-when engaged with. each other, short circuit the coils 20'through the lamps 56 or other non-inductive resistance to prevent inductive kick of the coils 20.

r e do not, however, limit ourselves to the use of any particular controllingmeanslforthe magnet, and any suitable type of motor controlling device therefor may be employed.

The advantages of our invention result from the use of pipe drawing apparatus having a lifting magnet arranged for contact with the ends of the pieces to be lifted. These may be pipes',rods, bars, or structural or othershapes of magnetic metal.

The apparatus described forms a simple and conveniently operated means by which pipes or other articles may be rapidly handled in large quantities.

Various changes may be made without departing from the spirit and scope of our invention. Thus, the form of runway, the manner of supporting the same, the details of the magnet carriage, and the arrangement of the operating motor and gearing therefor, may be changed in various ways.

We claim 1. In apparatus for drawing or pulling pipes or ot er objects in an endwise direction, a track-way, a carriage mounted to travel thereon, and a magnet carried by the carriage and having its polar surface in a plane substantially at right angles to the length of the track-way; substantially as described.

2. In apparatus for drawing or pulling pipes on other objects in an endwise direction, an inclined trac '-way, a carriage or trolley mounted for travel on the track-way, and an electro-magnet carried by the carriage or trolley and depending therefrom, said magnet having its polar surface in a plane substantially at right angles to the lon itudinal plane of the track-way; substantially as described.

3. In apparatus for the purpose described, atrack-way, a carriage mounted for travel thereon, and an electro-magnet rigidly secured to the carriage; substantially as described.

4. In apparatus for the purpose described,

a track-way, a carriage or trolley mounted for travel thereon, an electro-magnet carried 7 by the carriage or tmlley and having its polar surface in a lane substantially at right angles to the p ane of the track-way, a motor for operating the carriage or trolley, and means for controlling the speed of the motor;

substantially as described.

5. In drawing apparatus, a pivoted track or run way, means for moving the track or run-way on its pivot to chan e its angular 1 position, a carriage mounted thereon, and a vmagnet suspended from the carriage; substantially as described.

6. In a paratus for the purpose described,

a movab e carriage having a ma et suspended therefrom, said magnet aving a pivotal. magnetic clamping member; substantially as described.

- 7. In apparatus for the purpose described,

a movable carriage, a magnet carried thereby, an apron of non-magnetic material semagnetic material pivoted thereto; substanamsae 'u cured to the lifting end of the magnet, and In testimony whereof, we have hereunto arranged to form a support for the end porset ourhands.

tions oi' aplura-lity uf pipes 01' other articles; i substantially as described. v S. In aqwparatns for the purpose described, a lifting nagnet; having :1 clamping piece of GEORGE BAEHR.

HARRY B. LYNCH.

Witnesses F. W. YOUNG,

tially as described. GEL). E. KmK.