US728152A - Insulating means for electrical apparatus. - Google Patents

Insulating means for electrical apparatus. Download PDF

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Publication number
US728152A
US728152A US123792A US1902123792A US728152A US 728152 A US728152 A US 728152A US 123792 A US123792 A US 123792A US 1902123792 A US1902123792 A US 1902123792A US 728152 A US728152 A US 728152A
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United States
Prior art keywords
tube
socket
electrical apparatus
insulating
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US123792A
Inventor
Asa F Batchelder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US7424501A external-priority patent/US727571A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to US123792A priority Critical patent/US728152A/en
Application granted granted Critical
Publication of US728152A publication Critical patent/US728152A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/004—Sealing; Insulation

Definitions

  • My invention relates to means for insulating electrical apparatus, and more especially to such apparatus or parts thereof as are subjected to vibrations and strains.
  • the object of my invention is to provide means for electrically insulating one part from another, which will permit a rigid or driving fit to be made between the parts.
  • I employ an insulating material which is adapted to withstand relatively large compression strains, such as mica, and form it intoashell shaped to fit a cavity or recess formed in one member and protect the inner surface thereof by an expansible metallic shell and drive the male member into the flexible metallic shell.
  • the brush-holder E is provided with a cylindrical socket 6, ex-
  • An expansible lining G of sheet metal preferably made in the form of a split tube, as shown in Fig. 2, is placed within the tube F.
  • the expansible tube G may be supported on an anvil adapt-ed to enter the lower end of the socket e, and the stud D, which is carefully turned to the proper size, is driven into the upper end of the eXpansible tube G.
  • the frictional engagement of the several parts D G F E upon one another is as great as in the case of a driving .fit of iron upon iron.
  • the lower end of the insulating-tube F is closed 'loy'a' mica disk f, inserted in the lower end of socket e and tightly engaging the inner walls of the tube F.
  • the socket is open at one end only the mica disk will .be forced down into place before the expansible tube G is inserted.
  • the tube of insulation F extends a considerable distance outside the socket e, and in order to protect it from injury, either from blows or abrasion, I provide a protector Bin the form of a sleeve made of suitable insulating material, such as hard rubber or porcelain.
  • the protector H is provided with a corrugated outer surface to increase the creeping-surface.
  • Means for supporting and insulating 9o electrical apparatus which comprises a metal portion provided with a socket, a metal stud adapted to enter said socket, insulation between the stud and the socket, and an expansible metal lining between the stud and the 5 insulation.
  • Means for supporting and insulating electrical apparatus which comprises a metal lating material and the stud in said socket, and a smooth-surfaced protector surrounding the projecting portion of the insulating material.
  • Means for supporting and insulating electrical apparatus which comprises a metal portion having a socket, a tube of insulating material fitting said socket and projecting beyond the same, a two-part metal lining in said tube, a metal stud'adapted to be driven into said lining to expand it and Wedge the insu- ASA F. BATOHELDER.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insulating Bodies (AREA)

Description

Y No. 728,152. PATENTED MAY 12. 1903..
' P. BATCHBLDER'. INSULATING MEANS FOR' ELECTRICAL APPARATUS.
APPLICATION FILED SEPT. 17. 1902.
N0 MODEL.
: i I A a J 4 r f -H 1 F 4 .AE'A 'A'AA B Fig.1.
-' 7 +11 Witnesses. Inventor.
- I vqsa Batcheldef,
UNITED STATES Patented May 12, 1903.
PATE T OFFICE.
ASA F. BATCHELDER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
ELECTRICAL APPARATUS.
SPECIFICATION forming part of Letters Patent No. 728,152, dated May 12, 1903.
Original application filed September 3, 1901, Serial No. 74,245. No. 123,792.
To all whom it may concern:
Be it known that I, ASA F. BATOHELDER, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Insulating Means for Electrical Apparatus, (Case No. 3,127, a division of my application, Serial No. 74,245, filed September 3, 1901,) of which the following is a specification.
My invention relates to means for insulating electrical apparatus, and more especially to such apparatus or parts thereof as are subjected to vibrations and strains.
The object of my invention is to provide means for electrically insulating one part from another, which will permit a rigid or driving fit to be made between the parts.
In carrying out my invention I employ an insulating material which is adapted to withstand relatively large compression strains, such as mica, and form it intoashell shaped to fit a cavity or recess formed in one member and protect the inner surface thereof by an expansible metallic shell and drive the male member into the flexible metallic shell. By properly regulating the thickness of the insulating and metallic shells and the diameters of the male and female membersadrivo ing fit may be obtained at the insulated joint which is fully as secure against displacement as in the case of a driving fit between two metallic parts.
My invention will be more readily under- 5 stood by reference to the accompanyingdrawings, forming a part of this specification, in which-- Figure l is an elevation of a brush-holder connected to its securing-plate by means of a stud insulated therefrom according to one form of my invention, and Fig. 2 is a trans-v verse section of the studand insulation.
As shown in the drawings,the brush-holder E is provided with a cylindrical socket 6, ex-
5 tending therethrough. In the socket e is placed one end of a tube F, of dry mica or other insulating material capable of withstanding compression strains. Care is taken in shaping the tube F to have it of uniform Divided and this application filed September 17, 1902, Serial (No model.)
thickness and of an external diameter to fit the socket e. An expansible lining G of sheet metal, preferably made in the form of a split tube, as shown in Fig. 2, is placed within the tube F. In assembling the parts the expansible tube G may be supported on an anvil adapt-ed to enter the lower end of the socket e, and the stud D, which is carefully turned to the proper size, is driven into the upper end of the eXpansible tube G. By reason of the non-compressible nature of the insulating material F the frictional engagement of the several parts D G F E upon one another is as great as in the case of a driving .fit of iron upon iron.
The lower end of the insulating-tube F is closed 'loy'a' mica disk f, inserted in the lower end of socket e and tightly engaging the inner walls of the tube F. In cases where the socket is open at one end only the mica disk will .be forced down into place before the expansible tube G is inserted.
The tube of insulation F extends a considerable distance outside the socket e, and in order to protect it from injury, either from blows or abrasion, I provide a protector Bin the form of a sleeve made of suitable insulating material, such as hard rubber or porcelain. The protector H is provided with a corrugated outer surface to increase the creeping-surface.
It is apparent that the insulating-tube F and the mica disk f might be made integral, that the expansible tube G might be made of a single piece of readily-expansible metal, and that other changes might be made without departing from the spirit and scope of my invention. I
What I claim as new, and desire to secure by Letters Patent of the United States, is
1. Means for supporting and insulating 9o electrical apparatus, which comprises a metal portion provided with a socket, a metal stud adapted to enter said socket, insulation between the stud and the socket, and an expansible metal lining between the stud and the 5 insulation.
2. Means for supporting and insulating electrical apparatus, which comprises a metal lating material and the stud in said socket, and a smooth-surfaced protector surrounding the projecting portion of the insulating material.
In witness whereof I have hereunto set my portion having a socket, a tube of insulation f l hand this 12th day of September, 1902. I I l fitting said socket, a split metal lining for said tube, and a metal stud having a driving fit in said lining.
3. Means for supporting and insulating electrical apparatus, which comprises a metal portion having a socket, a tube of insulating material fitting said socket and projecting beyond the same, a two-part metal lining in said tube, a metal stud'adapted to be driven into said lining to expand it and Wedge the insu- ASA F. BATOHELDER.
Witnesses:
EDWARD WILLIAMS, J12, HELEN ORFORD.
US123792A 1901-09-03 1902-09-17 Insulating means for electrical apparatus. Expired - Lifetime US728152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US123792A US728152A (en) 1901-09-03 1902-09-17 Insulating means for electrical apparatus.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7424501A US727571A (en) 1901-09-03 1901-09-03 Brush-holder.
US123792A US728152A (en) 1901-09-03 1902-09-17 Insulating means for electrical apparatus.

Publications (1)

Publication Number Publication Date
US728152A true US728152A (en) 1903-05-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745676C (en) * 1939-06-07 1944-05-19 Siemens Ag Insulating body for brushes of electrical machines
US2709764A (en) * 1953-04-29 1955-05-31 Lawrence E Legg Flashover preventing means for brush holder of a dynamoelectric machine
US2897386A (en) * 1953-08-06 1959-07-28 Gen Electric Self-cleaning insulator for brush holder stud

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745676C (en) * 1939-06-07 1944-05-19 Siemens Ag Insulating body for brushes of electrical machines
US2709764A (en) * 1953-04-29 1955-05-31 Lawrence E Legg Flashover preventing means for brush holder of a dynamoelectric machine
US2897386A (en) * 1953-08-06 1959-07-28 Gen Electric Self-cleaning insulator for brush holder stud

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