US1558729A - Clipper - Google Patents

Description

Oct 27, 1925.

1,558,729 L.. J. WAHL GLIPPER Filed April '7, 1924 -Patented Oct. 27, 1925.

UNITED STATES -PA'IENT OFFICE.

LEo J.' WAHL, or STERLING, ILLINOIS.

Curran i vApplication filed April 7, 1924. Serial No. 704,701.

To all whom it may concern: l

Be it known thatr I, LEO J. WAHL, a citizen of the United States, residing at Sterling, in the county of lVhiteside and State of Illinois, have invented a certain new and useful Improvement in Clippers, of which the following is a full, clear, concise, and

exact description, referenceO being had to the accompanying drawings, forming a part of this specification.

My invention relates to clippers and more i particularly to a clipper of the vibratory type.

It is a purpose of my invention to provide an electromagnetically ,operated vibratory clipper that is so constructed that the same will have a minimum Width at the portion thereofl that is to be gripped by the hand of the operator and to provide such a clipper that has the metal in the magnet core and the armature so arranged as to provide a better path for the magnetic iiux `than has been previously the case.

IIt is a further purpose of the invention to provide `a iiexibly mounted armature that` is constructed so as t9 obtain the greatest thickness of metal in the lines of magnetic i flux and to further so join the armature with the flexible mounting thereforthatthe resili? ency of the mounting is not impaired by the joint and stifnessinthe armature 'is obtained Where this is the most desirable.

It Vis still a furtherl purpose of the invention to so construct the armature in an electro-magnetically operated clipper as to Iobtain the greatest amount vof stiffness for said armature for a given amount of weight and also'obtain a more eficient action between the electromagnet and the armature by shaping the armature so that the lines of force act substantially straight across between .the armature and the central core of the electro-magnet. A

Other objects and advantages of the vention will appear as the description of the accompanying drawings proceeds. However, I desire to have itffdistinctly understood that I do not intend to limit myself to the exact details shown or described but that I intend to include as part of my invention all such obvious changes and modifications of parts as would occur' to a per son Skilled in this art and as would within the Scope of the claims.

In the drawings: n Fig. 1 is a View partly in vertical section fall and partly in elevation o'I my improved clipper;

Fig. 2 is a plan view thereof showing the major portion of the cover broken away;

Fig. 3 is a section taken on'the line 34-3 of Fig. 2;

Fig. 4 is a section\taken on the line 4 4 of Fig. 1; y

Fig; 5 is a plan View of one of the laminations of said coil; and

Fig. 6 is a similar view of another lamination. .f

Referring in detail to the drawings, the clipper comprises a casing having a main body portion 10 and a cover 11, the coverl being held in place on the main body portion 10 by means/of anyA suitable fastening devices such as those indicated by the numeral 12 in Fig. 2. The main body portion lO of the clipper is provided with a pair of s upwardly extending lugs or bosses 13 for supporting the electro-magnet comprising the coil 14 which is wound on a core comprising a central main core portion 15, a longitudinally extending portion 16 which is provided with a pair of legs or branchesy 17 extending in opposite directions from the main core portion 15 and at right angles thereto, said branches 17 terminating in right angular end portions 18 extend-ing substantially parallel to the portion 15. The longitudinally extending portion 16, it will be noted, is quite narrow and the right angular end portions 18 are widened so as to provide a greater amount of material in the portions of the core where it is desirable to provide an easy path for the lines of magnetic force and further making itv possi ble to reduce the widthA of the body portion 10 between the side walls 19 by having the reduced portions 16 located between the coil 14 and one of said walls 19. The widened right angularly extending end portions 18 are further provided so as to pro- 100 `lugs 18 are located inwardly from the end of the coil 14 being located on opposite sides of the coil instead of beyond the end thereof,`thus making 'the casing for the cli per but very little wider than the length o` the coil 14 necessitates.

vibratory armature 24 by means of the connecting arm 25 which is secured in any suitable manner to the blade 22 so as to providea yieldin connection between said blade and mem er' 25.

The armature 24 is provided with aresilient mounting comprising the resilient member 426. A suitable projection 27 eX-' tends from one side of the casingflO and upwardly from the bottom thereof. The projection has a depression 28 therein upon which rests the bar 29 which extends toward the member 26 and is provided with a reduced end'portion 30 entering 'an opening 31 in the member 26 and serving as a` bearing lfor one side -fthereof A screw 32 is provided for adjusting the'position of the member 29 vertically. A bolt 42 is also provided at the thickened rear end portion 43 of the body portion 10 which enters a suitable openin in therear end of the member.26, said bo t having a nut 44 engaging the member 26 to clamp the same 1n posicore, thus' .providing the tion. An adjusting screw 45 is further provided for adjusting the spring 26 and arma/- ture 24 crosswise of the device.

In order that the joint between the armature 24 'zand the spring 26 does not interfere with the resiliency of the member 26 and the tuning thereof by grindin the same away,

as in dicated at 33, the resilient member 26 isI provided with a right' angular end portion' 34 and the armature 24 1s provided with a right angular end portion 35,'said right angular ends being secured together in any suitable manner as by means Tof the fastening members 36. The members 34 and 35 are joined together substantially in alignmentwiththe thickened end 18 of the g greatest amount of metal 1n the path of the lines of magnetic force. Further, the provisionv of the joint in the manner shown in Fig. 2 provides an absolutely stiff joint at the bend or olf-set between the armature 424 and the resilient member 26:- Thus, `an spring1 member 26 wil also accurately adjust t e member 25 and the blade 22, and f urther, the spacingy of the armature 24 relative to the core 1 5 will be ositively maintained by.adjustment of t e screw 32, as vno bendmg will take place at the off-set between tbel member 26 and the member 24.

f The rjoint between the" member 25 and the armature 24 is made in a similar manner,

adjustment of the the member 25 having a right. angular end portion 37 which is secured latwise against the end 38 of the armature 24 `by means of any suitable fastening means such as the rivet 39. The joint made between the members 24 and 25 at 37 and 38 also places the greater amount of metal available due to said joint substantially in alignment with the `thickened end portion 18 of the pole piece. l

In order to stiffen the armature 24 the same is preferably shaped as shown in Fig. 3, the central portion thereof being oE-set as indicated 'at 40 toward the electromagnet- 14. The width of the off-set portion 40 is substantially the same as thev thickness of the central core member 15 and accordingly, the lines of force, which are indicated at 41 in Fig. 3, will be substantially straight between said core 15 and the armature 24 as practically all the magnetic flux will occur between the olf-set portion 40 and the i core member 15.

. By placing the joint between the spring 26l and the armature 24, as indicated in Fig.

2 the maximum length of thespring 26 1s obtained as the joint does not in any way afwith the central oH-set portion, the same is made much stiffer for a given weight of material and due to the action of the lines ofy force substantially in straightlines between the core and the armature, a quicker action of the electromagnet is wobtained.

It will be noted upon reference to Fig. 2 that the ortion 15 of the core is comparatively wide and the portion 16 is much narrower. However, upon reference to Fig. 4, it will be seen that the lportion 15 of the core is comparatively thin and the portion .p16 `much thicker. quired cross section for the core is obtained in the portion 16 without unnecessarily widening the same, whereby a narrow casing can be provided making it easy for the operator to hold the device in his hand.

The coil is laminated as will' be clear fromv Figs.: 1 and 4 and the greater thicknessgis obtained by providing the laminations- 50 having the arms 51 on the ends thereofon opposite sides of the laminations 52 having the ari/ns 53L and the central arm 54 passing through the coil 14.

Having thus described my invention what I desire to claim and secure by United Stat'esLetters Patent iszj j 1. In a device of the character described,

Thus, the rea' lvibratory member comprising an armature, a resilient member secured to one end of said 'armature and an arm secured to the other end/ of said armature, said vibratory member being offset between the ends thereof, the joint between said armature and said resilient member lying in one of the olsets to stien the same.

2. In a device of the character described, a vibratory member comprising an armature, a resilient member secured to one end of said armature and lan arm secured to the other end of said armature, said vibratory member being offset between the ends there-y of, the joint between said armature and said arm lying in one of the offsets to stiHen the same.

3. In a device of the character described, an electro-magnet having a coil and core, said core having branches lying' on opposite sides of said coil., a vibratory member comprising an armature, a resilient member secured to one end of said armature and an arm secured to the other end of said armature, said vibratory member being oiset between the ends thereof, the joint between said armature and said resilient member lying in one of the offsets to stiften the same and in alignment with one of said branches to increase the amount of iron in the field of said magnet.

4. In a device of the character described,

an electro-magnet having a coil and a core having a central portion extending through said coil and branches extending on opposite sides'of said coil and a vibratory member comprising an armature having a right angular end portion and a resilient member having a right angular end secured face to face to the right angular end of said armature to thicken said vibratory member substantially in alignment with one of the branches of said core.

5. In a device of the character described, an electro-magnet having a coil and a core having a central portion yextending through said coil and branches extending on opposite sides of said coil and a vibratory member comprising an armature having a right angular end portion and a resilient member having a right angular end secured face to face to the right angular end of said armature to thicken `said vibratory member substantially in alignment with one of the branches of said core, said vibratory member being oset intermediate the ends thereof to accommodate said coil.

6. In a device of the character described, a casing, an electro-magnet in said'casing comprising a coil, a core in said coil having branches extending transversely rearwardly of said coil and having portions extending on opposite sides of said coil and a vibratory member comprising an armature having portions extending on opposite sides of said coil toward the branches of said core and substantially in transverse alignment therewith.

In witness whereof, I hereunto subscribe my name this 26th day of March, A. D. 1924.

LEO J. WAHL.

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