US1643789A - Knife-blade switch - Google Patents

Knife-blade switch Download PDF

Info

Publication number
US1643789A
US1643789A US592252A US59225222A US1643789A US 1643789 A US1643789 A US 1643789A US 592252 A US592252 A US 592252A US 59225222 A US59225222 A US 59225222A US 1643789 A US1643789 A US 1643789A
Authority
US
United States
Prior art keywords
blade
knife
slot
switch
blade 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
US592252A
Inventor
William H Siemon
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.)
CBS Corp
Original Assignee
Westinghouse Electric and 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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Priority to US592252A priority Critical patent/US1643789A/en
Application granted granted Critical
Publication of US1643789A publication Critical patent/US1643789A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/04—Controlling members for hand actuation by pivoting movement, e.g. levers
    • G05G1/06—Details of their grip parts

Definitions

  • My invention relates to knife-blade switches and particularly to the blades thereof and the method of making the same.
  • Ny invention has for its object the provision of a knife-blade switch that may be manufactured at a low cost and which is of substantial construction and also to provide a blade of such form that the handle may befreadily attached thereto.
  • Another object of my invention is to provide an improved method of making switch blades and similar devices.
  • the inserted member being provided with a threaded opening, forms a screw seat for attaching a handle to the blade.
  • the metallic bar in the construction of switch blades, the metallic bar has been subjected to upsetting and drawing processes. Such operations have a tendency to crystallize ⁇ and weaken the metal in the blade. blade, the metallic bar is subjected only to In my a punching process, which produces no deleterious effect upon the remaining metal of the blade.
  • Figure l is a perspective view of t-he inserted member.
  • Fig. 2 is a perspective view of the blade member.
  • Fig. 3 is a side view of the assembled knife-blade member.
  • An opening 3 is provided adjacent to the opposite end for the reception of a pivot pin, or other securing lmeans (not shown).
  • a second metallic member l is provided, having a body portion somewhat greater in width than blade l.
  • the surface of this member is provided with oppositely arranged slots 5, and a threaded opening 6 is provided at one end.
  • member 4L is of a somewhat conical, or acorn, shape, although any desired form of shape may be employed.
  • the slots 5 are parallel with each other, as is shown in Fig. 3.
  • themember 4 In assembling the switch blade, themember 4 is placed in the slot 2, whereupon the edges of the slot 2 seat themselves in vthe slots 5.
  • the members l and 4; may then be secured by any suitable means, such as by crimping, welding or soldering.
  • a knob or handle 7 is then secured to the blade by means of a screw 8, seated in the Vthread-ed opening 6.
  • a screw 8 By having member 4' of a conical form, the forces exerted by the screw 8 upon the member Ll are evenly distributed throughout the latter to the blade member' l.
  • a relatively smooth surface is also provided, making a neat appearing and ruggedV construction.
  • My deviceI is not limited in its ap lication to switch blades, and various mo ifications may be made therein without departing from the; ⁇ spirit and scope of the invention as defined in the accompanying claims.
  • An electric switch member comprising a blade member having a slot at one' end, a conical slotted member seated in the slot of said blade member, a slot of the second member forming a seat for the adjacent edge of the blade member.
  • An electric switch member comprising a blade member having a slot at one end, a conical slotted member seated in the slot of said blade member, a slot of the second member forming a seat for the adjacent edge of the blade member, said second member being provided with a threaded opening, and a handle secured by a screw co-operating with said threaded opening.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

9 8 ...w Il, .|.ll m 3.\\ u, m l nluhl. E V m H C2 NTz oww Ms, 4 45 mm. 1 e Lm www.. HBO I M` mw www. 5 7. 2 9 l 7, 2 s. E w. m S n w William Hemon lBY ATTORNEY Patented Sept. 27, 1927.
UNITED STATES PATENT OFFICE.
WLLIAII I-I. SIEMON, OF WILKINSBRG, PENNSYLVANIA, ASSIGNOR TO WESTING- HOUSE ELECTRIC t MANFACTURING COMPANY, A CORPORATION OF PENNSYL- VANIA. j
KNIFE-BLADE SWITCH.
Application filed October 4, 1922. Serial No. 592,252.
My invention relates to knife-blade switches and particularly to the blades thereof and the method of making the same.
Ny invention has for its object the provision of a knife-blade switch that may be manufactured at a low cost and which is of substantial construction and also to provide a blade of such form that the handle may befreadily attached thereto.
Another object of my invention is to provide an improved method of making switch blades and similar devices.
I accomplish the foregoing objects by providing a bar of copper, or other suitable metal, having a slot at one end thereof, inserting a member of substantially conical shape in the slot, and securing the two together. The inserted member, being provided with a threaded opening, forms a screw seat for attaching a handle to the blade.
I-Ieretofore, in the construction of switch blades, the metallic bar has been subjected to upsetting and drawing processes. Such operations have a tendency to crystallize `and weaken the metal in the blade. blade, the metallic bar is subjected only to In my a punching process, which produces no deleterious effect upon the remaining metal of the blade.
Figure l is a perspective view of t-he inserted member.
Fig. 2 is a perspective view of the blade member.
Fig. 3 is a side view of the assembled knife-blade member.
In the several views, similar reference characters indicate like parts.
A bar of suitable conducting metal 1, such as copper', is provided at one end with a slot 2, preferably formed by a punching process. An opening 3 is provided adjacent to the opposite end for the reception of a pivot pin, or other securing lmeans (not shown).
A second metallic member l is provided, having a body portion somewhat greater in width than blade l. The surface of this member is provided with oppositely arranged slots 5, and a threaded opening 6 is provided at one end. Preferably, member 4L is of a somewhat conical, or acorn, shape, although any desired form of shape may be employed. The slots 5 are parallel with each other, as is shown in Fig. 3.
In assembling the switch blade, themember 4 is placed in the slot 2, whereupon the edges of the slot 2 seat themselves in vthe slots 5. The members l and 4; may then be secured by any suitable means, such as by crimping, welding or soldering.
A knob or handle 7 is then secured to the blade by means of a screw 8, seated in the Vthread-ed opening 6. By having member 4' of a conical form, the forces exerted by the screw 8 upon the member Ll are evenly distributed throughout the latter to the blade member' l. A relatively smooth surface is also provided, making a neat appearing and ruggedV construction.
It will thusbe seen that I have provided a two-part switch blade which is simple of manufacture,r and which has the required strength, witghfa minimum amount of material. I.
My deviceI is not limited in its ap lication to switch blades, and various mo ifications may be made therein without departing from the;` spirit and scope of the invention as defined in the accompanying claims. Y
I claim as my invention:
l. An electric switch member comprising a blade member having a slot at one' end, a conical slotted member seated in the slot of said blade member, a slot of the second member forming a seat for the adjacent edge of the blade member.
2. An electric switch member comprising a blade member having a slot at one end, a conical slotted member seated in the slot of said blade member, a slot of the second member forming a seat for the adjacent edge of the blade member, said second member being provided with a threaded opening, and a handle secured by a screw co-operating with said threaded opening.
In testimony whereof, I have hereunto subscribed my name this 28th day of September 1922.
WILLIAM H. SIEMON.
US592252A 1922-10-04 1922-10-04 Knife-blade switch Expired - Lifetime US1643789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US592252A US1643789A (en) 1922-10-04 1922-10-04 Knife-blade switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US592252A US1643789A (en) 1922-10-04 1922-10-04 Knife-blade switch

Publications (1)

Publication Number Publication Date
US1643789A true US1643789A (en) 1927-09-27

Family

ID=24369930

Family Applications (1)

Application Number Title Priority Date Filing Date
US592252A Expired - Lifetime US1643789A (en) 1922-10-04 1922-10-04 Knife-blade switch

Country Status (1)

Country Link
US (1) US1643789A (en)

Similar Documents

Publication Publication Date Title
US2248675A (en) Multiple finger electrical contact and method of making the same
US4737114A (en) Electrical contact pin
DE4001857C2 (en)
US2895003A (en) Strain relief grommet
DE1060494B (en) Process for the production of anchor contacts which are arranged in protective tubes
US2630175A (en) Process of making securing means
EP3482460A1 (en) High-power electrical contact
US2866172A (en) Electrical connector
US1643789A (en) Knife-blade switch
US3287690A (en) Fuse clip
US962921A (en) Terminal for electric conductors.
US2987697A (en) Electric connector
US2813258A (en) Conductor terminals
US2958069A (en) Electrical device
US2180921A (en) Electrical contact member and method of making same
US2179753A (en) Method of making electrical connectors
US849028A (en) Connector for electric conductors.
US2265725A (en) Welding
US3157454A (en) Wire and insulation attachment for electric terminals
US2963053A (en) Component lead former
US3222482A (en) Electric fuse terminals
GB2069777A (en) Electrical fuse
US3598949A (en) Switch break jaw and spring means
US2741753A (en) Flexible electrical connector assembly
DE2205128C3 (en) Electric flashlight