Mixer with speed control

Claim 2

A food mixer with speed control comprising a housing, an electric motor mounted in said housing and adapted for driving food mixing means carried by said housing, and housing being provided with a handle portion, an electrical power and control circuit for said motor, a first multi-speed rotary switch for said motor connected in said circuit and having a plurality of speed positions, a second normally-open momentary switch connected in said circuit, said power and control circuit being characterized by a field coil assembly of said motor having a primary coil, a portion of which coil is adapted to be shorted out upon actuation of said second switch whereby to instantaneously increase the speed of said motor when said first rotary switch is in any one of said speed positions, a switch lever for said momentary switch pivotally mounted on said handle portion for downward actuating movement relative to said handle portion, vertically aligned longitudinally extending slots formed in the top surface of said handle portion and in said momentary switch lever, and a pivotally mounted control lever for said rotary switch which projects upwardly throUgh said aligned slots for actuating movement forwardly and rearwardly therein.

Claim 3

A food mixer with speed control comprising a housing having a handle portion, an electric motor mounted in said housing and having a field coil assembly associated therewith, a power and control circuit for said motor, a multi-speed rotary switch mounted in said housing and connected in said circuit, said rotary switch having a plurality of contacts each of which is connected to a separate speed tap of said field coil assembly, a momentary slide switch mounted in said housing and connected in said circuit and adapted when actuated to instantaneously increase the speed of said motor, a switch lever for said momentary switch overlying the forward portion of said handle poriton and pivotally connected at its forward end to said handle portion, a switch link having its lower end connected to an actuating button of said momentary switch and its upper end projecting upwardly through an opening provided in the upper surface of said handle portion into abutting engagement with the underside of said switch lever toward the rear end thereof with said rear end of said switch lever being biased by said momentary switch through said switch link into a slightly raised position above the upper surface of said handle portion, aligned longitudinally extending slots formed in the upper surface of said handle portion and in said momentary switch lever, and a pivotally mounted actuating lever for said rotary switch projecting upwardly through said aligned slots for forward and rearward movement therein.

Claim 4

A food mixer with speed control comprising a housing having a handle portion, an electric motor mounted in said housing and having a field coil assembly associated therewith, a power and control circuit for said motor, a multi-speed rotary switch mounted in said housing and connected in said circuit, said rotary switch having a plurality of contacts each of which is connected to a separate speed tap of said field coil assembly, a momentary slide switch mounted in said housing and connected in said circuit and adapted when actuated to instantaneously increase the speed of said motor, a switch lever for said momentary switch overlying the forward portion of said handle poriton and pivotally connected at its forward end to said handle portion, a switch link having its lower end connected to an actuating button of said momentary switch and its upper end projecting upwardly through an opening provided in the upper surface of said handle portion into abutting engagement with the underside of said switch lever toward the rear end thereof with said rear end of said switch lever being biased by said momentary switch through said switch link into a slightly raised position above the upper surface of said handle portion, aligned longitudinally extending slots formed in the upper surface of said handle portion and in said momentary switch lever, and a pivotally mounted actuating lever for said rotary switch projecting upwardly through said aligned slots for forward and rearward movement therein.

Claim 5

The food mixer with speed control of claim 2 wherein said field coil assembly is characterized by a primary coil, and wherein a portion of said primary coil is shorted out of said power and control circuit by said momentary switch upon actuation thereof as a result of downward pressure applied to said switch lever whereby to provide said instantaneous increase in motor speed.

Claim 6

The food mixer with speed control of claim 2 wherein a foam pad is disposed between the upper surface of said handle portion and the underside of said switch lever whereby to cushion actuation of said switch lever, said foam pad being slotted to accomodate said actuating lever of said rotary switch.

Claim 7

The food mixer with speed control of claim 2 wherein said switch lever is characterized by a top wall portion, by depending side wall portions, and by a depending front wall portion, upward pivoting movement of said switch lever being limited by engagement of said depending front wall portion with a front end surface of said handle portion.

Claim 8

A food mixer with speed control comprising a housing having a handle portion, an electric motor mounted in said housing and having a field coil assembly including a primary coil associated therewith, a power and control circuit for said motor, a multi-speed rotary switch mounted in said housing and connected in said circuit, said rotary switch having a plurality of contacts each of which is connected to a separate speed tap of said field coil assembly, a momentary slide switch mounted in said housing and connected in said circuit and adapted when actuated to short out a portion of said primary coil whereby to instantaneously increase the speed of said motor in any position of said rotary switch, a switch lever for actuating said momentary switch overlying the forward portion of said handle portion and pivotally connected at its forward end to said handle portion, aligned longitudinally extending slots formed in the upper surface of said handle portion and in said momentary switch lever, and a pivotally mounted actuating lever for said rotary switch projecting upwardly through said aligned slots for forward and rearward movement therein.

Claim 9

A food mixer with speed control comprising a housing having a handle portion, an electric motor mounted in said housing and having a field coil assembly including a primary coil associated therewith, a power and control circuit for said motor, a multi-speed rotary switch mounted in said housing and connected in said circuit, said rotary switch having a plurality of contacts each of which is connected to a separate speed tap of said field coil assembly, a momentary slide switch mounted in said housing and connected in said circuit and adapted when actuated to short out a portion of said primary coil whereby to instantaneously increase the speed of said motor in any position of said rotary switch, a switch lever for actuating said momentary switch overlying the forward portion of said handle portion and pivotally connected at its forward end to said handle portion, aligned longitudinally extending slots formed in the upper surface of said handle portion and in said momentary switch lever, and a pivotally mounted actuating lever for said rotary switch projecting upwardly through said aligned slots for forward and rearward movement therein.

Claim 10

The food mixer with speed control of claim 6 wherein an angular bracket is mounted in said housing, and wherein both said rotary switch and said momentary slide switch are mounted on said bracket.

Claim 11

The food mixer with speed control of claim 7 wherein a switch link extends generally vertically between the underside of said momentary switch lever and actuating button of said momentary switch, wherein a foam pad is disposed between the underside of said switch lever and the upper surface of said handle portion, downward pressure applied to the rear end of said switch lever serving to actuate said momentary switch.

Claim 12

The food mixer with speed control of claim 8 wherein guide means are provided on said bracket and on said rotary switch for said switch link of said momentary switch.

Claim 13

A food mixer with speed control comprising a housing, an electric motor mounted in said housing, a field coil assembly associated with said motor and characterized by a plurality of speed control coils and by a coil separate therefrom, an electrical power and control circuit for said motor, first speed control switch means connected in said circuit and having a plurality of speed positions wherein different combinations of said plurality of coils are interconnected in said circuit, second normally closed momentary speed control switch means connected in said circuit and adapted when actuated during operation of said motor to cut out said separate coil of said field coil assembly whereby to instantaneously and momentarily increase the speed of said motor when said first speed control switch means is in any one of said speed positions, and separate independently operable actuator means for said first speed control switch means and said second momentary speed control switch means.

Claim 14

A food mixer with speed control comprising a housing, an electric motor mounted in said housing, a field coil assembly associated with said motor and characterized by a plurality of speed control coils and by a coil separate therefrom, an electrical power and control circuit for said motor, first speed control switch means connected in said circuit and having a plurality of speed positions wherein different combinations of said plurality of coils are interconnected in said circuit, second normally closed momentary speed control switch means connected in said circuit and adapted when actuated during operation of said motor to cut out said separate coil of said field coil assembly whereby to instantaneously and momentarily increase the speed of said motor when said first speed control switch means is in any one of said speed positions, and separate independently operable actuator means for said first speed control switch means and said second momentary speed control switch means.