US1355622A - Magnetic intensifies - Google Patents

Description

C. B. RUSSELL. MAGNETIC INTENSIFIER. APPLICATlON FILED AUG. 15. 1919.

Patented Oct. 12, 1920.

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C. B. RUSSELL.

MAGNETIC INTENSIFIER- APPLICATION FILED AUG. 15, 1919.

M wily Patented Oct. 12,1920.

2 SHEETS-SHEET 2 lie U626t CHARLES 1B. RUSSELL, OF BROCKTON, MASSAGHU'SETTS.

MAGNETIC INTENSIFIER.

Specification of Letters Patent.

Patented Oct. 12, 1920.

Application filed August 15, 1919. Serial No. 317,820.

To all whom it may concern- Be it known that I, CHARLES B. RUssnLL,

a citizen of the United States, and a resident of Brockton, Massachusetts, whose post-office address is No. 508 Kennedy Building, 1 Brockton, Massachusetts, have invented an Improvement in Magnetic Intensifiers, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing likeparts.

".My present inventionrelates to'motors, and more particularly to amagnetic intensifier or electric motor of the reciprocating type in which a plurality' of impulses or strokes caused by the successive attraction of a plurality of armatures is utilizedto impart a comparatively long stroke to a piston or other power member.

In electro-gravitating motors the imparting of energy to the system of moving weights to assist said weights in accomplishing their function, is essential to a proper functioning of the motor. To successfully accomplish theresults desired, itis essential that the motor be quick acting through a relatively long stroke, and as the ordinary electric reciprocating motor is incapable of any but an extremely short stroke, I employ the cumulative effect of the short strokes of a plurality of superposed armatures, each armature being brought successively into position for maximum effective movement.

An object of my invention therefore is an improved magnetic intensifier or reciprocating motor of long stroke.

Another object of my invention is the provision of means in a device of the abovedescribed type in which the plurality of armatures are held out of engagement with each other and which are successively brought into operative relation with energized electro-magnets.

Other objects will appear as the description of the invention progresses.

In the accompanying drawings illustrating the preferred embodiment of myinvention,

Figure 1 is a plan view,

. Fig. 2 is a sideelevation,

Fig. 3 is an end elevation,

Fig. 4 is a detail, supplementing the showing in Fig. 2,

Fig. 5 is a detail of the connection between the armatures and the piston, and

Figs. 6 and 7 are views, in plan and elevation respectively, of the armature holders.

In the drawings, 10 designates a base plate of suitable material, as aluminum or brass and which may be made of the shape and size, comparatively, shown to the left of the dotted line 30 in the drawings, or of the same width but twice, three times, etc, the length shown, should it be desired to mount two, three, or more of the devices on the same piston, or extension thereof. The main portion of the base is rectangular in shape and extending outwardly therefrom at one end is the bearing plate 11, bearings 12, at both sides thereof, being formed integral therewith. The main portion and extension 11 are provided with holes 13 through which screws or bolts pass for attaching the base in position on the gravitating motor referred to above.

Integral with the base and near one end thereof, is a transverse plate 14, on which is mounted, by bolts 15, the electro-magnets 16. Four of these magnets are shown, and I find these suflicient for the purpose, but it is obvious I may increase or diminish the number employed without departing from the spirit of the invention. Binding posts 17 on the base adjacent the plate 14 are provided for connecting the magnets 16 in a suitable electric circuit. At the end of the main portion of the base 10 remote from the plate 14 is a second plate or bearing member 18 lying transversely of the base and parallel to plate 14. A bearing 19 is mounted in said plate 18 and is in alinement with a bearing 20 located in the plate 14. Mounted for reciprocating movement in the bearings 19 and 20 and parallel to the axes of the electro-magnets 16 is a piston 21,-as clearly shown in Figs. 1, 2 and 3.

Mounted on the piston 21 and rigidly secured thereto by the pin 22 is sleeve 23, this sleeve being provded with the plurality of steps 24 of equal length but differentdiameters, as clearly shown in Fig. 5. Slidably mounted on the steps 24 are the armature holders 25, one holder for each of the steps 24, and each holder being a free sliding fit' on its associated step. on each end of the holders is a notch 26 which slidably engages with the rod 27, attached at each end of the plate 18, by bolts 28, the rods 27 holding the plurality of holders in alinement. At one end of the cent al portion of the holders -are perforations 29, three in number, in which are driven pins 31, and,

referring particularly ,to. Fig. 1, it will be seen that the outer pins on the holder adjacent the'magnets 16, are engagedby the ends of the spring 32, while the center pin of the second holder isengaged by the middle of the spring 32. This arrangement is continued throughout the series of holders shown, and the springs are so proportioned that the holders are held out of engagement with each other. T he holders 25' are of any suitable non-magnetic material, as brass or aluminum, except the one remote from the magnets 16, which one is made of a good quality of magnetic material, as soft iron. Attached to the holders 25 at theendsof the central portion thereof are armatures of suitable magneticmaterial'; These armatures are so mounted as to be in alinementw1th'a'vert1cal pair of the magnets l6,as clearly shown in F 11 "The purpose of'malcing the last or outer holder 25 of magnetic material is for complet ng the magnetic circuit when all the armatures 539, and through which power is transmittion.

completed by any suitable means.

ted from the motor above. described to any suitable mechanism. Atthe other end of the shaft 34 is attached the boss. 40 having a lateral projection 41, to which is attached the threaded endof the rod 42, the nut 43 acting as the lock nut to securely hold the rod 42 in position. Adjustably mounted on the rod 42, by the bolt 44, is; the weight 45. As poweris transmitted from'the motor during the downward movementof the piston 21, the weight 45 assists in giving to "the piston the quick, sharp movement that aids the motorin accomplishing its tune- The operation is as follows: assuming that but a single series of the holders shown to left of Fig. 1 are involved and that all parts are in the position therein shown, the circuit through the electro-magnets 16 is The electro-magnets 16attract the armatures 33 on theholder 25 a-djacent'their poleends, the remaining holders and attached armaaufres following as a matter of course being assisted in such movement and retained in relative position with respect to the first said holder and armatures by the springs 32,. This downward movement, or move longitudinally with respect thereto,

m'enttoward the velectroemagnets 16 is as sisted. by the weight 45. Immediately the first pair of armatures engages with the ,pole ends of the 'electro-magnets 16, the circuit through such magnets remaining closed,

.the second pair of armatures is attracted,

followed by the third, 'etc., in succession, until when the last pair is attracted, the magnetic circuit is completed, because of the fact that the lastholder 25 is composed of magnetic material. As the first pair of armatures are associated with the pole ends of the electro-magnets to obtain max mum efiiciency, and as each succeeding pair are moved with'the first pair as a unit, and successively into position to'obtain maxi,- mum efficiency, it will bef's'een that each pair of. armatures imparts, what practically vamounts to a sharp blow to the'piston 21,

and that the rapid'succession of such blows moves the piston'through a comparatively 'longdistancathe result being lthat I obtain-an efficient long stroke motor.

If more poweris desired than that obtained from a single series of pairs of armatures 25 and associated electro-magnets 16, I may lengthen the base lO by adding the portion 46, as described above and placing thereon a second series of pairs of armatures '25 and associated e'lectro-magnets'16,.- coupling the piston extension 47 to the piston 21 by the coupling 48, thesets of: electro-magnets 16 being then connected in series to attract the related pairs ofarmatures 33 on the sleeves 23 simultaneously.

While I have described the preferred embodiment of my invention somewhatin'detail, it is to be understood that I may vary the size, shape. and arrangement of parts I herein shown within comparatively wide 1 limits, without departing from the spirit of the invention. 1

, Having thus described my invention, what I claim as new and desire to, secure by Letters Patent, is; r d

1. In adevice of the class described, the

combination of an electromagnet, a plurality of ,armatures associated therewith and spaced apart therefrom and from each other,; means for, bringing each succeeding armature into operative relat on with said electromagnet as the preceding armature isattracted, and. means for completing thfimagnetic circuit for the ,electromagnet only upon the attractionof the last of the p'lu-' rality .of armatures. 7 1

2. In a device of the class described, the

combination of a' plurality of electromagnets arranged inpairs, a piston, arranged parallel to the axes 'ther.eof andslidable a stepped sleeve mounted on said piston, a plurality of holders, one for each step of of armatures mounted on each of said the sleeve,flslidably mounted thereon, a pairholders, one armature of each pair being in alinement with each other and with the axes of the pairs of electromagnets, and yielding means for holding each holder and associated armatures in operative relation with, but out of engagement with, each other, whereby the relative position of the armatures is maintained as they are successively attracted by the electromagnets.

3. In a device of the class described, the

combination of a plurality of sets of electromagnets connected in series, a plurality of sets of armatures, one for each set of elec-,

' tromagnets, a piston common to the sets of electromagnets and armatures, the corresponding armatures of each set of armatures being connected to the piston for simultaneous action thereon, and means for holding the armatures of each set out of engagement with each other and for bringing the same to be brought into operative relation successively, whereby the piston is moved through a relatively long stroke by a succession of impulses.

In testimony whereof, I have signed my name to'this specification, in the presence of two subscribing witnesses.

CHARLES B. RUSSELL.

WVitnesses:

RACHAEL L. CLARK, GEO. H. MAXWELL.

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