US1351041A

US1351041A - Convertible hair-clipper

Info

Publication number: US1351041A
Application number: US345199A
Authority: US
Inventors: John N Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-12-16
Filing date: 1919-12-16
Publication date: 1920-08-31
Anticipated expiration: 1937-08-31

Description

J. N. JOHNSONn CONVERTIBLE HAIR CLIPPER.

APPLICATION FILED DEC. le, 1919.

mmm

Natented Aug.. 3L M2M WITNESS:

JOHN N. I'L'lI-INSON,l 0F ALBUQUERQUE, NEWIVIEXICO.

CNVlEB/TIBLE HAIR-CLIPPER. l

Specification of Letters Patent. Patntedl filming. gli, 1192119..

Application med December 16, 4191e. serial No. 345,199.'

To all whom t may concern.'

Be it known that I, JOHN N. JOHNSON, -a

citizen ofthe United States, residing atfrom one form of operation to the other can "be'iquickly and easily accomplished and which are simpley in construction, reliable and eliici'ent in operation and inexpensive to manufacture A further object is to providey power operating clippers in which the rate of operation can be mechanically varied within certain limits, and to provide improved power operating I neans.

lncarrying out my lnvention l provlde a reciprocating cutter operated an oscillating armature which has a string arm exy tension and an adjustable ball or weight on the free-end of the extension. Magnets are disposed on opposite sides of thel armature and their activity is controlled by a forked contact arm which is oscillated by the armature or its extension. The forked arm carries adjustable contacts leading to the op'- posed magnets. The main circuit is controlled by a switch, one part of which is operated by the pivoted handle of the clipper. To enableconversion of the clippers from power to manual operation, a manuallyoperated member is provided which, when shifted, forces the spring extension to one extreme position and yieldingly holds Ythe armature in a corresponding position, while intermediate linkage operated by the manually operatedLmember interposes a slidable member between the pivoted clipper handleand the flat s ring at a point adjacent the armature. ith this setting of the various parts, an operation of the pivoted clipperl handle will, through the interposed slidable member, transmit movement to the' armature and thus to the cutter and at the 'same time flex the spring extension of the armature.

When the pivoted clipper handle is released the spring extension of the armature will cause the cutter and armature to return to their former positions andthrough the interposed slidable member will lrestore the clipper handle to normal position. A return movement of the manually operated member resets the clipper for power operatlon.

In the accompanying drawings: a. l Figure 1 is a plan of clippers constructed 1n accordance with my invention, and with the covers remo-ved to show the interior mechanism, the clippers being vset for electrical operation.

Fig. 2 is a similar View, but with the clippers set for manual operation. i

Fig. 3 is a vertical section of the clippers, but with the covers in place, and'.

Fig. 4 is a diagram illustrating the circuit connections. Y

l provide a relatively stationary cutter plate 1 having cutterteeth 2, and a fixed handle 3. A handle 4 is pivoted to the plate 1 at 5 and is limited in its outer movement by the lug 6 on the plate 1. A movable cutter plate 7 is-arranged to slide upon the plate 1 and carries cutting teeth at its for- ,fward edge to cooperate with those of the stationary cutter plate 1. The plates 1 and 71may be recessed as at 8 and 9 respectively, so as to provide for a better bearing contact betweenthem and thus avoid any rocking of the plate 7 on the plate 1. A cover 10. has a' rib 11 fitting into a longitudinal groove 12 of the plate 7 to guide it in its reciprocatory movement;` 4The cover is held held against rotation, and a nut 18 and.

spring washer 19 on theY screw bear against the cover to hold its'against removal and to exert an adjustable pressure upon the movable cutter plate` 7.

The fixed handle 3 carries a supporting plate or casing 20 of suitable non-magnetic material'upon which is pivoted as by screw 21, the operating lever 22, one arm 23 ofwhich extends within the cover lOand into a slot 211 inthe cutter plate 7 whereby oscillation of thelever will reciprocate the cut-A ter plate 71- The screw 15 passes through an aperture 25 in the lever, and the engagement'of-the end walls of the aperture with the screw limits the movement of the lever .and thus .of the cutter plate. Disposed on opposite sides of the arm 26 of the lever are

electromagnets

27 and 28 for producing oscillations of the lever. The arm 26 may be of suitable materialso as to itself constitute an armature, or it may have an armature attached thereto. or casing 20 and insulated therefrom are

contact posts

29 and 30 having adjustable contacts 31 and 32 thereon. The contact post 29 is connected to the electromagnets 27 which are disposed on the opposite side of the lever therefrom, and the contactpost 30 is connected to the electromagnets 28 disposed on the opposite side of the lever therefrom. The plate or casing 20 carries a U- shaped contact lever 33 pivoted at 34, andthe arms of which have ends upturned on opposite sides of the lever arm 26. The upturned arms carry

adjustable contacts

35 and 36 for coperation with contacts 31 and 32 to control the activity of the electromagnets, dependent upon the position of the lever 33. The lever 33 has a projection 37 thereon which coperates with a V-shaped portion of a spring arm 38 to hold it at one side or the other of a central position. When the lever 33 is moved through its central position in either direction, the co-action between the V-shaped portion of the spring arm 38 and one side or the other of the projection 37 will exert a force tending t0 con tinue the movement in that direction.v A flat spring extension 39 of the lever arm 26 passes between the 'upturned ends of the arm 33 and since it oscillates with-.the lever it shifts the lever 33 through its central position to cause engagement of

contacts

35 and 36 with contacts31 or 32. lA post 40 is carried by and insulated from the plate or casing 20, and in turn carries a spring contact arm 41 adapted to be depressed into engagement with fixed contact post 42 by an insulated lug 43 on the pivoted handle 4, projecting through the casing 20 for -this purpose. The contact post 42 is electrically connected to the lever 33, and contact post 40 is connected to one of the main circuit wires 44, the other main circuit Wire 45 being connected as a common return to the

electromagnets

27 and 28. A weight 46 is shiftably mounted on theJ spring extension 39 of theoperating lever and -in accordance with its distance from the pivot of the lever it will vary the period of oscillation within certain limits. The electromagnets are preferably elliptical in cross section in' order tokeep their thickness as small as possible.

In operation, when the pivoted handle is moved inwardly toward the fixed handle,

the-contact 41 will be carried to' engage V42 and close the operating circuit. Current will pass from contact 42 to lever 33v and when the lever 26 is in the position illustrated in Fig. 1, the current will pass through contact 36 of the lever to the adjnstable contact 32 on contact post 30 thence Carried by the plate to the electromagnets 28 and through the common return wire 45 back to the main circuit. This will energize electromagnets 28 and the lever 26 will be attracted and moved toward them, and in doing so will produce a movement of the cutter plate 7. During this movement of lever 26, the extension 39 will engage contact 35 and shift the lever 33- past its central position. As soon as lever 33 passes the central position the spring member 38 will, through projection 37, assist in completing the movement of this lever, and bring contact 35 into engagement with contact 31 to close the circuit through the electromagnets 27. Early in the movement of lever 33, however, the circuit through electromagnets 28-is broken by the separation of contacts 36 and 32. Energization of electromagnets 27 will cause attraction and movement of lever arm 26 to-` ward them with a resultant reverse movement of the cutter plate 7. and a reverse movement of lever 33 will be produced. Y.

Thus during the engagements of the contacts 41 and 42 the oscillatory movement of the lever 22 and of the cutter plate 7 will continue. By adjustment of the

contacts

31, 32, 35 and 36 the magnets can be kept 4Closed for a longer or shorter portion of the strokeV of the armature lever, and the throw of the armature may also be varied to some extent. j

The mechanisml by which I convert the clipper to enable manual operation will now be described. A link 47 is slidably and pivotally mounted on a pin 48 of the base' or casing 20, by means of a slot 49 therein. A

bell crank 50 is pivoted on the base and one arm 51 thereof is pivotally connected to one end of a link 52, the other end of this link being pivotally connected at 53 to the link 47. The end of the casing 20 has a Slot 54 in which the shank of a screw 55 carried by a block 56 arranged on the interior of the casing is adapted to slide.

Tightening of the screw 55 will clamp the x block 56 at'any position along the slot 54.

When the block is shifted from the Fig. 1 to the Fig. 2 position, the advance end of the block engages and turns arm 50a of the bell crank 50 to shift the link 47, by means of link 52, along and about pin 48 fromv the Fig. 1 to the Fig. 2 position. After the required movement of the -bell crank, the arm A block 56 in this position. Any movement y now of pivoted handle 4 will` cause lug 59 thereof to engage an offset end 47a on the link 47 and slide the link on p in 48, which movement is permitted by the slot 49, and this will cause pin 5810i? the link to move lever arm 26 about its axis with a corresponding movement of the cutter plate 7. At` the same time the spring extension 39 will be flexed upon Athe block extension 57 so that when the pivoted handle 4 is released, the flexed spring will restore the lever 22 to the Fig. l or 2 position and provide areturn movement of the cutter plate 7. The

clipper can thus be operated manually as long as desired, but during this operationv the main circuit is of course disconnected. By vsliding the blockr 56l back to the Fig. 1

position the bell crank will be restored to y Fig. l position by means of a spring 60 secured thereto and having its other end anchored to the casing 20. The restoring of the bell crank will restore link 47 to the Fig. l position by means of the connectin link 52. rlhis leaves the clipper in condition to be electrically operated.

I claim:

l. A clipper comprising relatively movable cutterplates, power operated means for producing relative movement ofthe plates,

manually operated means for also produc-` ing relative movement of the plates, andv means for selectively rendering the manuv ally operated means, effective or ineffective in producing relative movement of the plates.

2. A clipper comprising a fixed cutter plate and a movable cutter plate, a lever for operating said movable cutter plate, power operated means for operating said lever, manually operated means for also operating said lever, and means for selectively rendering said manually operated means effective or ineffective -upon said lever.

3. A clipper comprisingv a fixed cutter plate and a movable cutter plate, a lever for operating said movable cutter plate electromagnets acting on said lever to operate it, controlling means for said electromagnets operated by the lever, manually operated means for operating the lever, and means for selectively rendering said manually op* erated means effective or .ineffective upon said lever.

4. A clipper comprising a fixed cutter plate and a movable cutter plate, alever for operating said movable cutter plate, electrical means for causing oscillations of said lever and means carried by said lever for controlling its rate of oscillation by the said electrical means.

5. A clipper comprising a fixed cutter plate and a movable cutter plate, a lever for operating said movable cutter plate, electrical means for causing oscillations of said lever, and means adjustably carried by said lever for variably controlling its rate of oscillation caused by the electrical means.

6. A clipper comprising a fixed cutter plate and a movable cutter plate, a lever for operating said movable cutter plate,' electrical means for causing oscillations of said lever, a shiftable weight on said extension for variably lcontrolling the rate of oscillation caused by the electrical means.

37. A clipper comprising a fixed cutter plate, a'movable cutter plate, a stationary handle, a pivoted handle, alever for operating said -movable cutter plate, power operated means carried by the stationary handle for causing oscillations of said lever, and shiftable means for operatively connecting and disconnecting the pivoted handle and lever to enable operation of said lever by said pivoted handle.

8. A clipper comprising 'a fixed cutter plate, a movable cutter plate, a stationary handle a pivoted handle a lever for opercrated means carried by the stationary han-v dle for causing oscillations of said` lever, a slidable member, a manually operated mem* ber intermediate mechanism operated by said manually operated member for interposing said slidable member between thel pivoted handle and the pivoted lever to enable o eration of the lever by the handle.-

l0. clipper comprising a fixed cutter plate, a movable cutter plate, a stationary handle` a pivoted handle, a. lever for operating the movable cutter plate, a spring extension of said lever, a support carried by the stationary handle, power operated meansJ v on said support for operating said lever, a pin carried by said support, a link mounted or pivotal and sliding movement on said pin, and manually loperated means carried by said support for shifting said link about said pin to interpose it between the pivoted handle and the spring extension and enable operation of the lever from the pivoted handle.

ll. A clipper comprising a fixed cutter plate, a movable cutter plate, a stationary handle, a pivoted handle, a lever for operating the movable cutter plate, a spring extensionA of said lever, a support carried by the stationary handle, power, operated i means on said support for operating said lever, a pin carried by said support, a link mounted for pivotaland sliding movement on said pin, and manually operated means carried by said .support for shifting said erating said movable cutter plate, electromagnets placed on opposite sides of said lever to oscillate it and thereby the movable cutter plate, a pivoted contact member operated fromone position to the other by said lever, a spring member coperating with said pivoted contact member to yieldingly hold the .contact member to either side of a central position whereby when the contact member is moved through the central position, the spring member will exert alrforce to complete the movement in the same direction, and stationary contacts coperating with said pivoted contact member to control the activity of said electromagnets', dependent upon the position of the lever.

13.' A clipper comprising a fixed cutter plate, a movablecutter plate, a-lever for operating said Amovable cutter plate, electromagnets placed on opposite sides of .said lever 4to oscillate it and thereby the movable cutter plate, Va pivoted contact member operated from one position to the other by said lever, a spring member cooperating vwith said pivoted contact member to yieldingly hold the contact member to either side of a central position whereby when the contact member is moved through the central position, the spring member will exert a force to complete the movement in the-same direction andA adjustable stationary contact members for controlling the activity of said electromagnets dependent upon the position of the lever.

` 14. A clipper' comprising a lixed cutter plate, a movable cutter plate, av lever for operating said movable cutter plate, electromagnets placed on opposite sides of said lever to oscillate it and thereby the movable cutter plate, a pivoted contact member operated from one position to the other. by

said lever, adjustable, contacts carried by,

said pivoted contact member, a spring member cooperating with said pivoted contact member to yieldingly hold the contact member to either side -of a central position whereby when the contact member is moved through the central position the spring member will exert a force to complete the movement in the same direction and stationary contacts c operating with the adjustable contacts of said pivoted contact member to control the activity of said electromagnets, depending upon the position, of the lever. l

15. A clipper comprising a ixed cutter plate, a movable cutter plate, a lever for operating said movable cutter plate, electromagnets placed on opposite sides of said lever to oscillate i't and thereby the movable vcutter plate, a pivoted contact member op` erated from one position to the other by said lever, adjustable contacts carried by said pivoted contact member, a spring member coperating with said pivoted contactmember to yieldingly holdthe contact member to either side of a central position whereby when the contact li'nember is moved through the central position, the spring member will exert a force to complete the movement in the same direction, and adjustable stationary contacts coperating with the ad- JoHN N. JOHNSON.