US664189A - Electrical-switch cap. - Google Patents

Electrical-switch cap. Download PDF

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Publication number
US664189A
US664189A US2825300A US1900028253A US664189A US 664189 A US664189 A US 664189A US 2825300 A US2825300 A US 2825300A US 1900028253 A US1900028253 A US 1900028253A US 664189 A US664189 A US 664189A
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United States
Prior art keywords
cap
lining
electrical
insulating
switch
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
US2825300A
Inventor
George B Thomas
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.)
PERKINS ELECTRIC SWITCH Manufacturing CO
Original Assignee
PERKINS ELECTRIC SWITCH Manufacturing 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
Application filed by PERKINS ELECTRIC SWITCH Manufacturing CO filed Critical PERKINS ELECTRIC SWITCH Manufacturing CO
Priority to US2825300A priority Critical patent/US664189A/en
Application granted granted Critical
Publication of US664189A publication Critical patent/US664189A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers

Definitions

  • the object of my invention is to provide a convenient and simple construction of insu- IO lating-lining for the metal caps of electrical switches and other articles.
  • Figure 1 is a vertical sectional view of the several parts before they are assembled.
  • Fig. 2 is a corresponding view after the parts have been put together, and
  • Fig. 8 is an inner face view of the lined cap.
  • A is the spun-metal cap of an electrical switch, through the central opening CL of which the spindle of the switch is to pass.
  • the insulating-lining is made from sheets of flexible hard fiber or other such material and is preferably in two main parts, a dislclike part B to line the top of the cap and a band C to line its cylindrical walls.
  • the disk B has a central opening Z) of somewhat smaller diameter than the hole a in the cap and preferably has around the margin a flaring edge 17. I clamp this disk to the cap by means of an eyelet D, inserted through the central spindle-opening 00.
  • An insulating-Washer d is preferably inserted under the top flange of the eyelet.
  • the hole in this washer like the hole in the disk B, is slightly smaller in di- 5 ameter than the hole in the metallic cap, so
  • the insulating-band C for lining the walls of the cap has at its upper edge a flange c to fit over and take behind the edge of the disk B, so that thereby the lining-band C will be held in place when the parts have been put together.
  • the upper edge of the cap is curved or beveled at a, and the flares b and c on the two parts of the lining are set at a corresponding angle.

Description

a. B. THOMAS. ELECTRICAL S'WITCH cm.
(Application filed Aug. 27, 1900.)
(No Model.)
WITNESSES ATTORNEY$ ASHINGTON, p. c.
UNITED STATES PATENT OFFICE.
GEORGE E. THOMAS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE PER- KINS ELECTRIC SWITCH MANUFACTURING COMPANY, OF SAME PLACE.
ELECTRICAL-SWITCH GAP.
SPECIFICATION forming part of Letters Patent No. 664,189, dated December 18, 1900. Application filed August 27, 1900. Serial No. 28,253. (No model.)
To all whom it may concern:
Be it known that I, GEORGE E. THOMAS, a citizen of the United'States of America, residing in Hartford, in the county of Hartford,
State of Connecticut, have invented Improvements in Electrical-Switch Caps, of which the following is a specification.
The object of my invention is to provide a convenient and simple construction of insu- IO lating-lining for the metal caps of electrical switches and other articles. I
In the accompanying drawings, Figure 1 is a vertical sectional view of the several parts before they are assembled. Fig. 2 is a corresponding view after the parts have been put together, and Fig. 8 is an inner face view of the lined cap.
A is the spun-metal cap of an electrical switch, through the central opening CL of which the spindle of the switch is to pass. The insulating-lining is made from sheets of flexible hard fiber or other such material and is preferably in two main parts, a dislclike part B to line the top of the cap and a band C to line its cylindrical walls. The disk B has a central opening Z) of somewhat smaller diameter than the hole a in the cap and preferably has around the margin a flaring edge 17. I clamp this disk to the cap by means of an eyelet D, inserted through the central spindle-opening 00. An insulating-Washer d is preferably inserted under the top flange of the eyelet. The hole in this washer, like the hole in the disk B, is slightly smaller in di- 5 ameter than the hole in the metallic cap, so
that when the eyelet is pressed up the insulating-Washer and the insulating-lining will serve to keep the eyelet free from contact with the metallic cap.
The insulating-band C for lining the walls of the cap has at its upper edge a flange c to fit over and take behind the edge of the disk B, so that thereby the lining-band C will be held in place when the parts have been put together. The upper edge of the cap is curved or beveled at a, and the flares b and c on the two parts of the lining are set at a corresponding angle.
1 claim as my invention- 1. The combination of the metallic cap of an electrical switch or similar article having a central opening for aspindle with an insulating-lining and an eyelet fitted to said central opening to secure the lining to the cap, substantially as described.
2. The combination of the metallic cap of an electrical switch or similar article having a central opening for a spindle with an insulating-lining and an insulating-washer both having openings of less diameter than that on the cap and an eyelet passing through said openings and securing the said insulating parts to the cap, substantially as described.
3. The combination of the metallic cap of an electrical switch or similar article with a lining-disk and means for securing it to the top of the cap and a separate lining-band for the walls of the cap, said lining-band having a flange to engage behind the edge of the lining-disk, substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
GEORGE E. THOMAS.
Witnesses:
G. W. Gooomoen, F. A. RIZY.
US2825300A 1900-08-27 1900-08-27 Electrical-switch cap. Expired - Lifetime US664189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2825300A US664189A (en) 1900-08-27 1900-08-27 Electrical-switch cap.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2825300A US664189A (en) 1900-08-27 1900-08-27 Electrical-switch cap.

Publications (1)

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US664189A true US664189A (en) 1900-12-18

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US2825300A Expired - Lifetime US664189A (en) 1900-08-27 1900-08-27 Electrical-switch cap.

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