US2233829A - Electric motor - Google Patents

Electric motor Download PDF

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Publication number
US2233829A
US2233829A US304243A US30424339A US2233829A US 2233829 A US2233829 A US 2233829A US 304243 A US304243 A US 304243A US 30424339 A US30424339 A US 30424339A US 2233829 A US2233829 A US 2233829A
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United States
Prior art keywords
motor
housing
armature
electric motor
handle
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Expired - Lifetime
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US304243A
Inventor
Herbert H Blackwell
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Individual
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Individual
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Publication date
Priority claimed from US214979A external-priority patent/US2183442A/en
Application filed by Individual filed Critical Individual
Priority to US304243A priority Critical patent/US2233829A/en
Application granted granted Critical
Publication of US2233829A publication Critical patent/US2233829A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/118—Structural association with clutches, brakes, gears, pulleys or mechanical starters with starting devices

Definitions

  • This invention relates to an electric vacuum shaver of the general type described in my application of the same title, filed June 21, 1938, Serial No. 214,979, now Patent 2,183,442, December 12, 1939, and this application is a divisional application of that application.
  • An object of the present invention is to provide an improved suction fan, the same being carried directly by the armature of the motor and having a milled periphery projecting through a slot in the shaver handle to facilitate the motor being started by manually spinning the fan.
  • a further object is to provide a dry shaver of this character which will be formed of a few strong simple and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.
  • Figure 1 is a plan view of an electric vacuum shaver constructed in, accordance with the invention and showing the cover plate of the handle removed to expose the working parts.
  • Figure 2 is a cross sectional view taken on the line 2 2 of Figure 1 and showing the centrifugal fan having a knurled periphery projecting through the handle for starting the motor.
  • I0 and Il designate companion shells forming the hollow handle of the shaver. All of the working parts are carried by one of the shells, as for example, the shell II as best shown in Figure 1.
  • centrifugal fan blades I2 are secured to an annular plate I3 by any pref-erred means and the plate is fixedly secured to the armature I4 of the motor by rivets I5, or other connectors.
  • a substantially cylindrical housing I6 for the blades is provided at the forward end with a flange I1 which may be secured to the blades by tits I8, or otherwise, and which is provided with an enlarged central opening I9 to permit air entering along the hub 20 of the motor.
  • the housing I6 is of greater diameter than the diameter of the fan blades so that a space exists between the latter and the housing through which the indrawn air exits rearwardly along the motor and cools the motor after first having sucked into the hair receiving trap all hair severed from the beard.
  • the periphery of the cylindrical housing is milled as shown at 2U and projects for a portion of its length through a slot 2l formed in the shell I0. Since the fan is secured directly to the motor armature the operator may start the motor through the medium of the milled housing I5.
  • a hollow handle an electric motor in the handle, an armature for the motor, a shaft for the armature, there being a transverse slot in the handle, a suction fan connected to the armature shaft, and an annular housing carried as an unit with the fan and having a portion of the periphery projecting through said slot to permit the motor being started by manual rotation of the housing.
  • a hollow handle an electric motor in the handle, an armature for the motor, a shaft for the armature, said handle having a transverse slot therein, a suction fan connected to .the armature shaft and having fan blades, and an annular housing spaced from the outer ends of the fan blades and having a flange secured to the leading edges of the fan blades, air passing into the fan blades at the center thereof being expelled rearwardly from the housing at the tips 0f the blades, said housing projecting for a portion of its length through said slot to permit the motor being started by manual rotation of the housing.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

March 4, 1941. H. H BLACKWELL 2,233,829
ELECTRIC MOTOR Original Filed June 2l, 1938 ,zwi
ATTORNEYS til Patented Mar. 4, 1941 UNITED STATES PATENT OFFICE ELECTRIC MOTOR.
Herbert H. Blackwell, Roanoke, Va.
2 Claims.
This invention relates to an electric vacuum shaver of the general type described in my application of the same title, filed June 21, 1938, Serial No. 214,979, now Patent 2,183,442, December 12, 1939, and this application is a divisional application of that application.
An object of the present invention is to provide an improved suction fan, the same being carried directly by the armature of the motor and having a milled periphery projecting through a slot in the shaver handle to facilitate the motor being started by manually spinning the fan.
A further object is to provide a dry shaver of this character which will be formed of a few strong simple and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.
With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modications may be resorted to within` the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.
In the accompanying drawing forming a part of this specification:
Figure 1 is a plan view of an electric vacuum shaver constructed in, accordance with the invention and showing the cover plate of the handle removed to expose the working parts.
Figure 2 is a cross sectional view taken on the line 2 2 of Figure 1 and showing the centrifugal fan having a knurled periphery projecting through the handle for starting the motor.
Referring now to the drawing in which like characters of reference designate similar parts in the various views, I0 and Il designate companion shells forming the hollow handle of the shaver. All of the working parts are carried by one of the shells, as for example, the shell II as best shown in Figure 1.
In carrying out the invention the centrifugal fan blades I2 are secured to an annular plate I3 by any pref-erred means and the plate is fixedly secured to the armature I4 of the motor by rivets I5, or other connectors. A substantially cylindrical housing I6 for the blades is provided at the forward end with a flange I1 which may be secured to the blades by tits I8, or otherwise, and which is provided with an enlarged central opening I9 to permit air entering along the hub 20 of the motor.
The housing I6 is of greater diameter than the diameter of the fan blades so that a space exists between the latter and the housing through which the indrawn air exits rearwardly along the motor and cools the motor after first having sucked into the hair receiving trap all hair severed from the beard.
As will be seen by referring to Figure 2 the periphery of the cylindrical housing is milled as shown at 2U and projects for a portion of its length through a slot 2l formed in the shell I0. Since the fan is secured directly to the motor armature the operator may start the motor through the medium of the milled housing I5.
Since a description of the operation has been given as the description of the parts progressed, it is thought that the invention will be fully understood without further explanation. v
What is claimed is:
1. In an electric Vacuum shaver, a hollow handle, an electric motor in the handle, an armature for the motor, a shaft for the armature, there being a transverse slot in the handle, a suction fan connected to the armature shaft, and an annular housing carried as an unit with the fan and having a portion of the periphery projecting through said slot to permit the motor being started by manual rotation of the housing.
2. In an electric vacuum shaver, a hollow handle, an electric motor in the handle, an armature for the motor, a shaft for the armature, said handle having a transverse slot therein, a suction fan connected to .the armature shaft and having fan blades, and an annular housing spaced from the outer ends of the fan blades and having a flange secured to the leading edges of the fan blades, air passing into the fan blades at the center thereof being expelled rearwardly from the housing at the tips 0f the blades, said housing projecting for a portion of its length through said slot to permit the motor being started by manual rotation of the housing.
HERBERT H. BLACKWELL.
US304243A 1938-06-21 1939-11-13 Electric motor Expired - Lifetime US2233829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US304243A US2233829A (en) 1938-06-21 1939-11-13 Electric motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US214979A US2183442A (en) 1938-06-21 1938-06-21 Electric vacuum shaver
US304243A US2233829A (en) 1938-06-21 1939-11-13 Electric motor

Publications (1)

Publication Number Publication Date
US2233829A true US2233829A (en) 1941-03-04

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US304243A Expired - Lifetime US2233829A (en) 1938-06-21 1939-11-13 Electric motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553251A (en) * 1947-01-02 1951-05-15 Engineering Res Associates Inc Vibrating tool
US20100132968A1 (en) * 2008-11-28 2010-06-03 Axel Hartmann Electric tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553251A (en) * 1947-01-02 1951-05-15 Engineering Res Associates Inc Vibrating tool
US20100132968A1 (en) * 2008-11-28 2010-06-03 Axel Hartmann Electric tool
US8479840B2 (en) * 2008-11-28 2013-07-09 Aeg Electric Tools Gmbh Electric tool

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