US1038131A - Magnetic clutch. - Google Patents

Description

v. HEMMING.

MAGNETIC CLUTCH.

APPLIOATION FILED NOV. 10, 1911.

1,038,131, Patented 'septh 10,1912.

-UNITE-D sTA'rEs 'PATENT omuon.4

VICTOR HEMMING, OF NEW YORK, NL Y., ASSIGNOR TO H, KRANTZ MANUFACTURING COMPANY, A. CORPORATION OF 'NEW YORK.

MAaNErIcjcLuron.

Speeication of Letters Patent. Patented-Sephlt), 1912.

Application filed November 10,1911. 'Serial No. 659,515.

To 4all 'whom it may concern: lv.

Be it known that I, VICTOR HEMMING, a citizen of the United States, residing in New -York city, county and State of New York, have 4invented certain new and useful Improvements in Magnetic4 Clutches, 'of -which the `following is a clear, full, and

exactdescription; i

The .object of thisinvention' is to provide a magnetic clutch between -a prime moven shaft and a driven shaft toje-nable'one to quickly,v quietly and .expeditiously couple the .same together, and to secure any direction of rotation to the driven shaft without changing the direction of rotation of .the driving shaft, or its inertia'. v l

In' carrying out my invention, I provide Ya rotatable driving shaft, on which is i magnet, secured' to vand 'rotating with the mounted, so as to rotate therewith prefer; ably two magnets with a space `li e'tweenA their iu'ner ends.v At'the outerends of each sha-ft, large circular disks, -'pret'erably of softiron, are located.` At one side or above thel magnets. I- provide a bar,` preferably #,iron, which extends from 4ja point 'adjacent to the inner end of the magnets to witliin a short .distance of the disks so as to pro- 'vide a gap inv the magnetic circuit adjacent to one part of each disk. Above 'the ro.

I ftating disks I-mount-,securedto the: driven 'ring preferably o shaft, a` flexible Plate having an annular tofore described.` The disks have their circumference farther from the center of their shaft than has the bar which serves tocomplete the magnet-ie circuit.. Consequently 4o when the driving shaft is rotated and cur-A rent is admitted ato one of the magnets, the annularlring of the flexible disk secured to Vthe driven v'shaft will be pulled down, and

rest uponthe magnetizedportion of the cir- .oumference of said disk, so that it will be caused to rotate therewith, but upondemagnetizin such a magnet and magnetizing VAthe ot er, the annular'v 'ring will 'be pulled upon the other disk, and the driven shaft rotated in the opposite-direction. 'If'.

nii-electrical: connection is'm'a'de at allthe driven" disk will-remain free.A The scope of m'y invention will be pointed out in the .claims.- f

In the accompanying drawings: Figure 1 is a plan" view partly in section showing` rig. 2.

soft iron, which: extends over the ga in the magnetic circuit here sufficient of my invention to enable' onel skilled t-he art to practice the invention. F1g..2 1s a longitudinal sectional view of the dev1ce. Fig, 3. is a section on line 3--3 As shownjin the drawings'l provide a base 3` which may be preferably of slate or other non-magnetic material, althoughin some'instances even magnetic .materialmay be used, at the ends of which' I secure vstandardsdl and 5, in which in suitable portions' a prime mover shaft ordriving shaft 1 1s mounted. At the center. of the base surrounding the shaft l and supportedby' a leg member '6. I secure a bifurcated soft iron frame 7 having at itsl upper end a bar 8 extending to both right and Aleft in line with and over the driving shaft. of t-he bifurcat'cd frame and secured to the Ashaft I secure'soft iron cores 9 carrying at their outer ends a disk 10 4and secured by a iscrew 11 to the driving shaft. Around the 0n each side cores Imount magnets of any usual oo nstruction. They' may be .stationary as annular soft iron ringA 16 so positioned as to bridge the -gap between the ends of the bar 8 and the ad]acent portions'of the disk 10, the annular ring 16 beingnearerto the disk than to the bar. As will be obvious to one skilled in the art, such construction enables one -to send current through the right hand magnet, depress the ring 16'` on lto the disk 10, andcause it to be driven lthereby' so long as.. currentis passing through the'magne't, and power is applied to the driving. shaft, and when no current ispassing through either magnet no connection will exist between the two shafts. lVhen power is t-aken through-the left hand -magnet without any change ofdirection of the driving shaft, the driven shaft will nevertheless be driven in the opposite -di- .rectionl In carrying out this. invention, details of construction -v may be varied from thpse shown, and yet the essence of the 1nvent1on,

retained; some partsmightbe employed without others, and new` features thereof might be combined with elements `old in the art'in diverse ways, although the Aherein described typeiis regarded as embodying 5 substantial improvements over such modifi which as a matter of 4language might be said to fall therebetween.

I' 'claim as my invention.`

'consisting ofv a vdrivingjshaft, a pair of magnetizable disks spaced apart, and means for magnetizing" said disks, a driven shaft having its-axis at right angles to the driving shaft and midway between the disks, a

lthev disks with fa magnetizableportion adjacent lto said disks, and said plate being resiliently connected with its shaft, and a 'magnetizable bar adjacent to one portion of thea-disks to `make` an almost complete closed' magnetic field at a point adjacent to said ring.

2. The herein described magnetic clutch consisting/of a driving shaft, a plurality i lof magnetizable cores secured to said shaft andspaced apart, magnetizableldisks carried by saidvcores, an electromagnet surrounding 1. The herein 'described magnetic clutch plate having its plane in right angles to' each of said cores, a driven shaft having its axis at an angie to the axis of` said driving shaft, a resilient Adisk secured to said driven shaft, a magnetizable ring carried by said disk and located adjacent the periphery of the disks on'the cores carried by the driving shaft, and a magnetizable bar adaptcd'to Alocalize the magnetic field, mounted adjacent said disk and extending over the adjacent ends of saidmagnets.

3. The herein described magnetic clutch consisting of a driving shaft, magnetizable disks rotatably secured thereto, stationary electromagnets surrounding said shaft, and

located adjacent 'said disks, a inagnetizable bar mounted adjacent said magnets, adapted tolocalize the magnetic field, there be- .ing an air gap between the ends of said bar and said disk, and driven shaft adjacent said magnets, a disk carried by said driven shaft', a magnetizable ring carriedby said disk adapted to be diawn into contact with the periphery of the disks on the driven `shaft when the magnets are energized. l

4. In a magnetic clutch a driving element, magnets surrounding said driving element,

`magnetizable, disks actuated by said -driving elementand located adjacent said magnets,v a driven element, an armature carried thereby adapted to .contact with said disks when said magnets are magnetized, and

means adjacent said magnets but out of contact with said disks and said armature adapted tolocalize the magnetic field of said magnets.

Signed at New York city, New York, this 6th day of November in the year one thousand nine hundred and eleven,

VICTOR HEMMING. Witnesses:

MATTHEW P. TULLY, B. C. DUNN.

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