US915438A - Electromagnetic apparatus for reciprocating machine-tools and the like. - Google Patents

Description

H. A. HORN OR.

ELECTROMAGNETIC APPARATUS FOR REOIPROGATING MACHINE TOOLS AND THE LIKE.

APPLIOATION IILED AUG. 17, 1907.

91 5,438. Patented Mar. 16, 1909.

w; in no H. A. HORNOR.

I ELECTROMAGNETIC APPARATUS FOR REGIPROOATING MACHINE TOOLS AND THE LIKE.

APPLICATION FILED AUG.17, 1907.

915,438, Patented Mar. 16, 1909.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

HARRY A. HORNOB, OF RIVERTOll, NEW JERSFY.

ELECTED MAGNETIC APPARATUS FOR BECIPROCATING MACHINE -TOOLS AND THE LIKE.

Specification of Letters Patent.

Patented March 16, 1909.

Application filed August 17,1907. 'SsriaI No. 389,084.

To all whom. it 1mg COM6I7t.'

Be it known that I, HARRY A. HORNOR, a citizen of the United States, residin" at Riverton, Burlington county, State of Few J e1' sey, have invented a new and useful Electromagnetic Apparatus for Reciprocating Machine-Tools and the Like, of which ,the following is a s ecification.

My invent1on consists of a novel construction of an electro magnetic apparatus for reci rocating machine tools, which is especially a apted for doin heav work, althou h of course it is equa ly We designed for light work and consists broadly of a novel construction of an apparatus wherein I em loy an armature in conjunction with a wor ing and an auxiliar electro magnet, the enerizing of the coi s of said electro magnet being effected by means of a suitable manually or automatically operated switching device.

My invention also consists in the employment of an.electrically 1pjclillarized armature in the working tool is supported and operated.

My invention further consists in conjunction with an armature and the working and auxiliary electro magnets, of a novel construction of automatic switching apparatus. whereby the working and auxillary-electro magnets are intermittently energized without requiring any attention from the operator after said switching device is once thrown into operation.

For the purpose of illustrating my invention, 1* have shown in the accompanying drawings one form thereof which is at resent preferred by me, since the same has een found in practice to give satisfactory and reliable results, although it is to be understood that the various instru'mentalities .of which my invention consists can be'variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a side elevation of an electro magnetic 'a paratus for reciprocating machine tools an' the like, embo ying my switch which may beemployed in conjunction with my invention. .F 1g. 4 represents another embodiment of my inventlon where- 1n an electrically excited armature 1s emloyed. Fig. 5 represents a lan view of a portion of the operating mec anis'm seen in ig. .4, showing the means for varying the air gap. Fig. 6 represents a cross-section of the electro magnetic driving parts of Fig. 4. Similar numerals of reference indicate correslponding parts in the figures.

eferrmg to the drawings :1 designates an electro magnetic apparatus for punching,

shearing, presslng, hammering, for mg, jog-j gling, stamping, riveting, and the ike, having a bed or base 2 and an up er or overhanging frame or body 3 which 1s connected to said bed, and preferably inte ral therewith, by the neck 4, said upper b0 y 3 having within the same, the recess 5 for the reception of an armature 6. In order to prevent ma netic short circuiting through the masses of the machine frame, I preferably insert on the face of the magnet coils brass plates 6 It will be understood that the contour of the entire body portion 3 may conform to that heretofore employed in punchin and riveting machines 0 erated'mechanica y or pneumatically and therefore do not desire to be limited to any particular shape of the same.

7 designates a rod or stem secured to and depending from the armature 6, said rod i being guided in the o ening 8 in the wall 9 of the upper body 3, sald rod having attached to its lower portion, a'tool head 10 which carries a tool 11, which as I have shown in punching or similar tool,

Fig. 1 may be a The reciprocate type desired is operated by er or auxiliary coil, it being understood that the function of the lower coil 18 after the same has been energized is to cause-do scent of the armature 6 and its adjuncts upon the work 20 which is supported upon a suitable anvil or die 21, while the function of the upperon auxiliary coil 19 is to retract i or draw upwardly said armature 6 and its adjuncts from the work and to retain the same inits elevated or retracted position until the work has been shifted to the de- In the diagrammatic view seen in Fig.3,

1 I have shown a manually 0 erated switch as 23 which I employ when (llrect control of each movement of the armature 6 is desired.

In Fig. 2 I have shown a mechanically or automatically operated switch which may be employed, suitable speed control of which may be obtained by any type of motor used,

- as shown at 25 in said Fig. 2.

It will be apparent that when the manually operated switch as 23 is employed as shown in Fig. 3, the armature 6 and its adjuncts may be retained in their upper or retracted position by energizin the upper or auxiliary electro magnet coi 19 or said armature may be drawn to its lowermost or operative position by energizing the lower or working electro 'magnet coil 18.

In the construction seen in Fig. 2 wherein I employ an automatically operated switching device, it will be apparent that the motor 0 erated switch will operate as follows e motor 25 is provided with a shaft 26 on which is mounted the contact drum 27, the latter having suitable contact and insulating strips attached thereto. Two sets of brushes 28 and 29 are provided bearing on the contact Idrum. One set will lead the current from the supply-means 30 and the other set will energize the electro magnet coils alternately so as to impart proper reciprocating movement to the armature and its adjuncts. On the contact drum 27 as will be understood from Fig. 2, there is a continuous contact rin 31 and two discontinuous rings 32 an 33, one lead wire connecting with the continuous rin and the other lead wire being divided an connected by two brushes, with both discontinuous rings. One end of the working electro magnet coil as 18 is connected'to the same brush as one end of the auxiliary electro magnet coil 19, the remaining end of each electro magnet coil being connected by a separate brush to one of the discontinuous contact rings, the rotation of the drum then sending the current alternately.

into the working and auxiliary electro magnet coils as will be ap arent.

For very heavy wor I preferably employ the embodiment of my invention seen in Flg. 4,

wherein an additional coil 34 is employed, the same being embedded in the armature 35 whereby the latter is electrically excited or polarized and has suitable connections as 36 and 37 leading. to a-suitable source of in one position holding the working tool in it s upper or retracted osition and when said switch is in its opposite position, it will be ap arent that the working electro magnet cm as 39 and the armature electro magnet coil 34 cooperate to force the tool powerfully into the work, the tool being retracted by the auxiliary electro magnet coil, as is evident. It will be further understood from Fig. 4 that the auxiliary electro magnet coil 40 is enerized at the proper period by means of the eads 41 and 42 while the working electro magnet coil 39 seen in Fig. 4 is ener ized at the proper intervals by means of the leads 43 and 44, said leads 41 and 42 and 43 and 44 being controlled by the switching means 38 or its e uivalents. It will further be apparent t at the coil 34 is in circuit in both positions of the switching device 38 while the ing upon whether the tool is to be force into.

the work or held in its upper or retracted position. The upper electro magnet coil 40 may be in a separable or movable portion, as 45, of the upper frame 3 and is adapted to be moved vertically by means of hand wheels 46, each having a stem 47 carrying the pinions 48, which mesh with the racks 49 attached to the electro magnet coil 40 or its frame.

It will be understood that in the construction seen in Figs. 4 and 5, I have omitted to show the bearings for the stem 47, as it will be understood that the same ma be mounted in any suitable portion of t e frame or body 3, it being only essential that said stems 47 be supported in such a manner that they may be readily rotated by hand wheels 46,

whereby the engagement of the pinions 48 with the racks 49 will raise and lower the upper electro magnet coil 40 so as to vary the an gap accordin to requirements.

It will be understood by-those skilled in this art that the working force is directly proportioned to the magnetic flux produced y electric circuits fiowin in coils, the path of which is through the e ectro magnet coil, the armature and then back through the main frameto the electro ma net coil a ain,

including the air gap, where om it w' beapparent that by moving the separable portion of the frame containing the auxiliary frame, arodsecured directly thereto, a

working implement carried by said rod,

electro magnet coils embedded in said frame on opposite sides of said recess and adapted to operate said armature and implement.

2. In an electro magnetic apparatus for reciprocating machine tools and the like, a frame, an armature located in a recess in said frame, a rod secured directly thereto, electro magnet coils on opposite sides of said recess, and switching means for causing reciprocation of said armature.

3.?lIn an electro magnetic apparatus for reciprocating machine tools and the like, a frame, an armature located in a recess in said frame, a rod secured directly thereto, a working implement carried by said rod, electro magnet coils on opposite sides of said recess, and switching means for alternately energizing said electro magnet coils.

4. In an electro magnetic apparatus for reciprocatin machine tools and the like, a frame provi ed with a recess, electro magnet coils embedded in said frame on opposite sides of said recess, an armature located in said recess having a greater diameter than the electro magnet coils, a rod secured to said armature, a working implement carried by said rod, and means to alternately energize said electro magnet coils.

5. In an electro magnetic a paratus for reciprocatin machine tools and the like, a

frame provi ed with a recess, electro magnet" coils embedded in said frame on opposite sides of said recess, an armature located in said recess having a greater diameter than the electro magnet coils, a rod secured to said armature, a Working implement carried by said rod, and switching means to alternately energize said electro magnet coils.

6. In an electro magnetic apparatus for reciprocating machine tools and the like, electro magnet coils, an armature therebetween, a rod secured tosaid' armature/3a working implement carried by said ,rod,

switching means for reciprocating said i1n plement, and means for varying the magnetic reciprocating-machineitoolsuan frame, an, armaturelocated -in a'recess in said frame,v a rod secureddirectly thereto, afworking implementca'rriedby said rod,

, 14. In "an electro"magneticpapparatus for frame, Ta Qplurality oteleetro; magnetintermediately of said coils electro ma net coils on o posite'sidesof'said recess, an means for shifting one of said electroinagnet coils to vary the magnetic flux.

8. In a device of the character described, a frame, a body portion movable relative thereto, an electro magnet coil embedded in the same; means for moving said electro magnet coil axiallyan armature adjacent to said electro magnet coil, and a coil embedded in said armature.

9. In a device of the character described, a bed, an upper overhanging body portion connected to said bed having a recess therein, an armature in said recess, a rod depending from said armature, and guidedin said bod portion, a working tool carried by said ro a working electro magnet coil embedded in said overhangingsbody below said armature, an auxiliary electro magnet coil embedded in said body above said armature, and switching means for effecting the reciprocation of said armature.

10. In an. electro magnetic a paratus for reciprocating machine tools an the like, a frame provided with a recess, axially alined electro magnet coils embedded in said frame on opposite sides of said recess, an armature located insaidrecesshavingadiametergreater than said electro magnet coils, a rod secured to said armature, a working implement carried by said rod and switching means to alternately energize said electro magnet coils.

11. In an electromagnetic a paratus for reciprocating machine tools and the like, a frame, a plurality of electro magnet coils ,100 carried by said frame, an armature located adj acent thereto and having a greaterdiam- 1 eter than the electro magnet coils, a rod se-' cured to said armature, a working implement carried by said rod, and means to 105 alternately energize said electro-magnet coils.

12. In an electro magnetic apparatus-for I. reciprocating machine tools an the like, a: frame, a plurality of electromagnet coils carried by 'said frame, an armature located intermediately of said coils and of a greater Y diameter than the inner diameter of' either coil, a working implement carried by said armature, and means to alternately energize diameter than the inner diameter of either coil, a working implement carried by said armature, and automatic means to alternately energizesaid electro magnet coils the like,:.a 1 QQ l saidl fmm an ar attire seats; and. ff a gre t diameter than the inner diameter of 'either,

reciprocating 'machinej tools an carriedby coil, a working implement carried by said armature, and means to continuously efiect altprnate energization of said electro magnet 001 s.

15. In an electro magnetic apparatus for reciprocating machine tools and the like, a frame, a plurality of electro magnet coils carried by said frame, an armature located so as to be alternately actuated by said coils, said armature being of a greater diameter than the inner diameter of either coil, and means for automatically and continuously effecting the alternate energization of said electro magnet coils.

16. In an electro magnetic apparatus for reciprocating machine tools and the like, a frame, a plurality of electro magnet coils carried by said frame, an armature located so as to be alternately actuated by said coils,

said armature being of a greater diameter 20 HARRY ALHoRNoR.

W itnesses A. G. CONNELL,

H. MATLAOK.

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