US140618A - Stephen dudley field - Google Patents

Stephen dudley field Download PDF

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Publication number
US140618A
US140618A US140618DA US140618A US 140618 A US140618 A US 140618A US 140618D A US140618D A US 140618DA US 140618 A US140618 A US 140618A
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Prior art keywords
screw
field
stephen
base
nut
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Expired - Lifetime
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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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S256/00—Fences
    • Y10S256/03—Wire clamp

Definitions

  • Figure 1 is a side elevation of my bindingpost.
  • Fig. 2 is a sectional elevation.
  • Fig. 3 is a horizontal section.
  • A represents the base; B, the vertical screwstem; and C, the set-nut or head of an ordinary screw-post, such as is at present in use.
  • My improvement consists in drilling a hole, t, through the base of the vertical screw-stem B directly upon a line with the horizontal face of the base A, so that the end of the currentwire can be passed through the hole and the set-nut turned down uponit, so as to secure it.
  • the device is also much more simple and more A easily managed than the ordinary arrangement.
  • Abindingscrew post for electrical purposes composed of the base A, set-screw C, and screw-stem B having the perforation i in its base, substantially as and for the purpose above described.

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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Description

UNITED STATES PATENT OFFICE.
STEPHEN DUDLEY FIELD, OF SAN FRANCISCO, CALIFORNIA.
IMPROVEMENT IN SCREW-POSTS FOR ELECTRICAL APPARATUS.
" Specification forming part of Letters Patent No. 140,618, dated July 8, 1873; application filed April 10, 1873.
To all whom it may concern:
, Be it known that I, STEPHENDUDLEY FIELD,
' of San Francisco city and county, State of California, have invented an Improved Binding-Screw Post for Electrical Purposes; and I do hereby declare the following description and accompanying drawings are sufiicient to enable any person skilled in the art or science to which it most nearly appertains, to make and use my said invention or improvement,
- which Figure 1 is a side elevation of my bindingpost. Fig. 2 is a sectional elevation. Fig. 3 is a horizontal section.
A represents the base; B, the vertical screwstem; and C, the set-nut or head of an ordinary screw-post, such as is at present in use.
Heretofore the end of the current-wire has been wrapped two or more times around the lower part of the vertical screw-stemv B, and the set-nut C has been turned down so as to bind the coil thus formed between the two opposing faces of the set-nut and base, and it frequently happens that when thus confined the coil becomes displaced, either by the turning of the set-nut to fasten it or otherwise, so that the contact is imperfect, thus impairing the working of the machine.
My improvement consists in drilling a hole, t, through the base of the vertical screw-stem B directly upon a line with the horizontal face of the base A, so that the end of the currentwire can be passed through the hole and the set-nut turned down uponit, so as to secure it. By this means the liability of displacement, so as to afiect the electric current is avoided, as the wire will always be in contact with the post, and the turning of the face of the setscrew down upon the wire will polish the wire and give an excellent electrical contact.
The device is also much more simple and more A easily managed than the ordinary arrangement.
Having thus described my invention, whatI claim, and desire to secure by Letters Patent, 1s
Abindingscrew post for electrical purposes, composed of the base A, set-screw C, and screw-stem B having the perforation i in its base, substantially as and for the purpose above described.
In witness whereof I hereunto set my hand andseal.
STEPHEN DUDLEY FIELD. [L. s]
Witnesses:
JOHN L. Rooms, 0. M. RICHARDSON.
US140618D Stephen dudley field Expired - Lifetime US140618A (en)

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US140618A true US140618A (en) 1873-07-08

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