US1798629A

US1798629A - Magnetic handling apparatus

Info

Publication number: US1798629A
Application number: US41724A
Authority: US
Inventors: Horace H Raymond
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-07-06
Filing date: 1925-07-06
Publication date: 1931-03-31
Anticipated expiration: 1948-03-31

Description

March 31, 1931. H. H. RAYMOND 1,798,629

MAGNETIC HANDLING APPARATUS Filed Jul 6, 1925 5 Sheets-Sheet 1 IIIIIII March 31, T931.

H. H. RAYMOND 1,798,629

MAGNETIC I IANDLING APPARATUS F iied July 6 1925 5 Sheets-Sheet 2 H. H. RAYMOND I MAGNETIC HANDLING APPARATUS March 31, 1931 Filed July 6 1 25 5 Sheets-Sheet 3 Patented Mar. 31, 1931 m new;

HORACE H. RAYMOND, OF,KE1\TSI1\TGTON, CONNECTICUT MAGNETIC HANDLING APPARATUS Application filed July 6',

mass or quantity of the articles to be arranged, which drum is provided with a series of electro-magnets for sequentially extricating the articles and depositing them in a guide so that they pass from the machine in question to whatever point they may be desired.

In the accompanying three sheets of drawings, I have illustrated one form of construction embodying the improvements of my invention.

Fig. 1 is a perspective view of a machine viewed from the entrance or hopper side;

Fig. 2 is a vertical sectional viewand side elevation of the same.

Fig. 3 is a fragmentary sectional view of one of the electro-magnets.

Fig. 4 is a rear view, parts being broken away to show details of construction.

Figs. 5 and 6 are details of the electric commutator. I

The drum 10 is provided with a hub 11 supported by the standard 12, having the bearing 13. This hub may be conveniently secured in position by a bolt 14 which passes through an external disc 15 and screws into an interior disc 16.

The drum is preferably mounted to rotate on a horizontal axis and is provided with a recess or chamber 17 for the articles which are to be separated and arranged in order. At one side of the drum I mount a hopper 18 so that a substantial quantity of the articles may be handled at one charge of the machine.

The standard 12 and hopper 18 may be conveniently supported on a base 19 and a post 20 or in any other suitable manner.

. The drum 10 is a flange constituting the walls of said recess,

preferably provided with 1925. Serial No. 41,724.

a peripheral flange 21 and an outer flange 22 which may conveniently serve as a belt surface for driving the drum. The parts are so constructed as to provide a chamber 23 for a series of electro-magnets 24. Each magnet consists of a coil wound on a sleeve 25 and provided with a core 26 of magnetic material. This core is provided with an inner head 27 which is preferably elongated circumferentially with respect to the drum. The back of the recess 23 is open to permit the magnet coils to be inserted, and the drumis provided with passages for the cores 26 of the magnets. Each magnet is held in place by a screw 28 which screws into the outer end of its core and thus clamps the magnet to the drum. The outer periphery of the drum may be provided with openings for the screws 28 and screw caps 29 for closing the openings. The recess 23 is preferably closed by a cover plate 30 held in place in any suitable manner. The drum is preferably formed of non-magnetic material and may be of a single aluminum casting. The recess 17 is preferably provided with a brass liner 31 through which the heads or pole pieces 27 of the magnets project.

The insulating ring 32 is mounted on the standard 12 adjacent the rear wall of the drum 10 and secured in position by one or more screws such as 33. The screw 33 passes through an elongated slot 34 in the standard so that the ring 32 may be circumferentially adjusted for the purpose hereinafter de scribed. This insulating ring 32 may be of what is commonly termed fibre and carries two commutators, 35 and 36. The commutator 35 is in the form of a continuous ring, whereas the commutator 36 is in the form of a segment which extends from a point below the axis of the drum to a point which is above the axis, that is, .it is substantially semi annular. These commutator-s may be secured to the insulating supporting ring 32 in any suitable manner and are provided with

terminals

37 and 38, respectively, for the cable which provides the electric current. Each magnet coil is connected to the brush l0 which engages the outer ring 35 and each coil has an individual brush 4:1 engaging the inner commutator segment 36. It will thus be seen that each magnet will be energized during that portion of each revolution in which its brush 41 engages the commutator segment 36. Preferably the brushes and commutators are protected by a cover 42 which is secured to the back of the drum and a shield 43 which is secured to the standard 12.

The discharge guide preferably consists of two members 44 spaced apart from each other a sufficient distance to permit the passage of the shank of the articles to be sorted, or arranged, and the upperend of the guide is arranged spaced apart from the upper wall of the recess 17 in the drum a sufiicient distance to allow for the passage of the head of the article. The inner end of the space between the guide members is arranged in the plane of the centers of the pole pieces 27. The width of these pole pieces is preferably narrow as indicated on the drawing. The current strength is such as to make the magnets only pick up articles and carry them around in the plane of the opening between the inner end of the guides. Of course when an object is picked up by its end as is illus trated in Fig. 4 of the drawing, the object is supported above. its, center of gravity. By having these pole pieces comparatively small the effect of the magnets is concentrated and the likelihood of picking articles up by. their small ends is minimized. Of course if an article is picked up by the small end, no particular harm is done as it would, 01 course, drop through the guide when released by the magnet, but it is desirable that the articles should be picked up properly, otherwise a numberof articles maybe picked up and then uselessly dropped without being properly deposited in the deflecting guide. The shape and size of the guide 44 will of course depend upon the shape and size of the articles to be handled.

The commutator segment 36 is preferably so arranged or adjusted as to cause each magnet in turn to be energized at the. bottom of the hopper and de-energized just as it passes over the upper inner end of the deflecting guide. This not only saves useless expenditure of energy but insures the rapid pick-up and deposit of the articles in the guide as the drum is rotated. The guide is so constructed and arranged, however, as to tend to properly deflect and detach the articles from the drum, even in case the magnet retains some of its attractive power.

The hopper is preferably provided with an inner flange 45 which extends into the drum recess and covers the. heads of the magnets throughout a part of the circumference of the drum. This keeps the weight of the mass ot-articles ed the drum except during the time necessary for the magnets to act.

A guard plate 46 is preferably. provided and may be secured to the inner wall of the guide 44 next to the edge of the rotating drum so as to prevent articles from dropping down between the drum and the guide 44. The inner end 47 projects inside the drum above the guide 44 to prevent any interference with the operation at this point.

The drum is also preferably provided with interior projections as 48 which serve to agitate the mass of articles within the drum as the drum rotates. Such agitation is particularly desirable when the articles being handled are large.

Theseprojections 48 may be hollow and serve as convenient conduits 49 for the wires (not shown) leading from the brushes to the I magnets.

It is possible by apparatus of this character to automatically handle great quantities of articles at high speed at very small cost of operation. The construction is very simple and inexpensive and requires a minimum amount of supervision and repair.

I claim:

1. A magnetic handler comprising a rotatable drum having a lateral recess and a plurality otelectromag-nets having their poles disposed at intervals around and outside the rim of said recess, a horizontally disposed bearing for said drum, spaced guides extending into said recess to a point adjacent the upper portion of the path of movement of said magnet poles, the inner ends of said guides being spaced apart axially of said drum and means for controlling the current supplied to said magnets.

2. A magnetic handler comprising a rotate able drum having a lateral recess, a hopper extending laterally of said recess, a plurality of electromagnets having their poles disposed at intervals around and outside the rim of said recess, and spaced guides extending into said recess to a point adjacent the path of movement of said magnet poles immediately beneath the top of the recess in the drum and spaced to engage an elongated headed object before it is released by a magnet.

8. A magnetic handler comprising a rotatable drum having a lateral recess and a plurality of electromagnets having their poles disposed radially at intervals around and outside the rim of said recess, spaced guides extending into said recess to a point adjacent and extending across the path of movement of said magnet poles, and means for controlling the current supplied to said magnets, said guides being shaped to engage articles depending from said poles as they move. past, to retain those articles having their heads up and reject those withtheir heads down.

4. A magnetic handler comprising a rotatable drum having a lateral recess closed at one side and a plurality of; electromagnets having their poles disposed at intervals around and outside the rim of said recess, guides extending into said recess to a point adjacent an upper portion or" the path of movement of said magnet poles, and a hopper extending from one side of said drum, the recess in said drum extending below the bot- 'tom of said hopper, and said hopper bottom extending across said recess to enable said magnets to extract articles from the side of a pile on said hopper bottom in the recess.

5. A rotatable drum having a recess, a hopper supplying said recess, a series of magnets having poles exposed in said recess, and guides for headed articles extending over the edge of said hopper into said recess to a point adjacent the path of movement of said poles immediately beneath the upper wall of the recess, said guides being constructed to engage such headed articles as are depending from said magnet poles and retain those having their heads up, those having their heads down being rejected by said guides.

6. A magnetic handler comprising a. rotatable drum having a recess and a number of electro-niagnets arranged around said recess, a hopper having a flange extending into said recess and forming a part of the load supporting bottom wall thereof and guides leading out of said recess, said electro-magnets co-operating with objects held by the hopper to raise them for engagement with said guides.

7. A drum for a magnetic handler eomprising a one-piece non-magnetic casing having a central recess in the front and an annular recess in the rear and magnets mounted in said rear recess with poles extending into the front recess.

8. A magnetic handler comprising a hollow rotatable drum open at one end and closed at the other, magnets thereon, a guide having spaced ends projecting inside said drum and a guard plate secured laterally of said guide between it and said drum.

9. A magnetic handler comprising a 1'0- tatable drum having a central recess in its face and an annular recess at its rear and a group of electro-magnets spaced circumferentially in said annular recess, the poles of said magnets extending into said central recess, means for energizing said magnets throughout a part of a revolution of said drum, means for adjustably timing the energizing of said magnets, a hopper feeding into said central recess, and spaced guides extending into said central recess and adapted to assist in the removal of headed articles from said magnets.

10. A handling machine consisting of two shallow concentric rotatable cylinders, carrying electro-magnets between the walls of said cylinders, the cores of said magnets being radially disposed and extending through the wall of the inner cylinder, a hopper feeding into one end of said inner cylinder, a

plurality of contacting brushes, one for each of said magnets, a segments angularly adjustable about the centers of said cylinders adapted to energize said magnets successively throughout a portion of each revolution, and spaced guides extending into the inner cylinder adapted to carry away articles clinging to said magnets. I

11. A magnetic handler comprising an aluminum drum having a supporting hub at one side and with an open recess at the other side and having 'a-cylindrical flange constitutingthe recess walls, a series of electro-magnets secured to said flange with elongated pole pieces extending through saidfiange into said recess, and spaced guides forheaded articles having its entrance end in said recess in the path of movement of the shanks of articles held by the pole pieces above the centers of gravity of said articles.

12. A magnetic handler comprising a nonmagnetic hollow drum provided with magnets carried outside said drum and having their pole pieces extending through the drum peripheral walls, and means for rotating said drum and its magnets.

v 13. A magnetic handler comprising mag nets, a movable support therefor having a recess about which said magnets are arranged in such manner that elongated headed objects of magnetic material may hang substantially vertically from the pole pieces during upward travel of the magnets, a hopper for articles adjacent said magnets in the lower portions of their travel, means for raising said magnets and guide means for Withdrawing such objects from the pole pieces, the pole pieces of the magnets which cooperate with the objects being so shaped andlocated as to direct the objects into the guides.

14. In an apparatus for handling clongated headed objects, the combination with a hopper, of a carrier constructed to withdraw such objects from the hopper endwise and with the heads of said objects either up or down and means spaced from the hopper for withdrawing all the objects from said carrier, said means being shaped to support only those objects having their heads adjacent said means and their shanks in substantially the plane of movement of said carrier while rejecting all other objects on said carrier,

said guides being shaped adjacent said carrier to reject those objects entering the guides and having their heads inverted.

15. The combination with a hopper, of means for carrying elongated headed objects from said hopper while supporting said ob-- jects above their centers of gravity and with their heads either up or down, and means for extracting said objects from said carrier, Said extracting means being constructed to reject those objects within said means having their heads below their centers of gravity and retaining and feeding those objects having their heads above their centers of gravity. 7

16. A magnetic handler comprising a hopper, movable magnetic means for carrying elongated objects of magnetic material from said hopper all in substantial parallelism, and guide means extending into the path of movement of said objects to receive and hold 10 at least a substantial portion of them in parallelism.

17. A magnetic handler comprising a hopper, a magnet, means for moving said magnet to withdraw an elongated object of magnetic material from said hopper suspended from one end and a guide for engaging such an object suspended from one end by the magnet and for directing the movement of the object away from said magnet, the magnet 29 being adapted to carry the object in a position for engagement with the guide.

18. A handling and selector mechanism for elongated headed objects comprising a hopper, a carrier for withdrawing such objects from the hopper, and guide means extending adjacent said carrier for receiving objects therefrom, said guide means being shaped adjacent the carrier to retain those objects having heads in one direction and 3e reject those received objects having heads inverted.

19. A magnet handler comprising a hopper, a carrier for withdrawing objects of magnetic material from the hopper and provided with a magnet, the carrier and magnet being movable below the hopper bottom, means for having the magnet inactive during its downward movement below the level of objects within the hopper, and means for rendering said magnet effective through at least a portion of its upward travel.

HORAGE H. RAYMOND.