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Publication numberUS297928 A
Publication typeGrant
Publication dateApr 29, 1884
Publication numberUS 297928 A, US 297928A, US-A-297928, US297928 A, US297928A
InventorsH. Gobbel
Original AssigneeThe Goebel Sectional Electeio Undebgeound And Pneumatic deliveey Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Chbistian h
US 297928 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




SPECIFICATION forming part of Letters Patent No. 297,928, dated April 29, 1884.

Application filed September 21, 1883. (No model.)

To all whom, t `may concern,.-

Be it known that I, CHRISTIAN H. GOEBEL,

a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Electric Cut-0ffs, which improvement is fully set forth in the following specication and accompanying drawings, in which- Figure l is a plan view of an electric cutoff embodying my invention, the top of the casing being removed. Fig. 2 is a section thereof in line a: x, Fig. l. Fig. 3 is a section thereof in line yy, Fig. l.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of' a device for cutting off an electric current at the place of service, as required, the construction being here# 2o inafter fully set forth.

Referring to the drawings, A represents box or casing of insulated material.

B representsa post, which is journaled to the casing A and properly insulated, the head of the saine being squared for the engagement of a suitable key. v

C C represent toothed segments of insulating material, which gear with each other, one of them being mounted on the casing A, and

3o the other connected with the post B, whereby by the rotation of the latter motion is imparted to the two segments. Attached to the segments are fingers l) D', formed lof metal, the two fingers pointing toward each other,

and adapted to engage simultaneously with a contact plate or point, E, attached to the bottom of the casing. Electric conductors or wires F F of the main line lead, respectively, to the fingers D D, whereby an electric cir- 40 cuit is formed through the wire F, the finger D, the contact plate or point E, the finger D', andthe wire F'. To the casing are also attached contact plates or tongues G G', which are separated one from the other, and have connected with them wires H H', respectively, the latter wires leading to a lamp, an apartment, &c., forming the well-known loop.

It will be seen that when the parts are in position shown in Fig. l the electric circuit is through the casing, as has been stated,with 5o out affecting the wires H H', and thus the lamp, apartment, &c., are not in electric communication with the main wire. Vhenv the post is operated the segments are rotated, whereby the fingers leave the plate or point E and are placed in contact with the tongues Cr G. The current or circuit is thus deflected or changed to the tongues and loop, and thus reach the lamp, apartment, &c. In order to cut off the lamp, apartment,&c., the segments 6o are rotated and` restored to their normal position, whereby the fingers are disconnected from the tongues, and again in electric communication by means of the contact plate or point E.

4It will be seen that the lingers are of such width that they reach the tongues before entirely leaving the contact plate or point, and vice versa, whereby there is no break in the electric circuit during the operation of the 7o segments.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A casing and electric conductors, in com- 75 bination with tongues G, a contact-plate, E, toothed segments C, and fingers D D', said lingers being connected with said segments and adapted to engage simultaneously with said contact-plate in one position of the segments, 8o or simultaneously with said tongues in the other position thereof, substantially as and for the purpose set forth.

2. A casing and electric conductors, in combination with two toothed segments geared 8 5 together, fingers connected with said segments,

a contact-plate, and two tongues, said contactplatebeing common to the two fingers when the latter are removed from the tongues, substantially as and for the purpose set forth. C. H. GOEBEL.


J oI-IN A. WrnDnnsHnrM, A. P. GRANT.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3015705 *Oct 6, 1958Jan 2, 1962Kingston Products CorpDual rotary switch assembly
US5499187 *Apr 3, 1995Mar 12, 1996Arinc Research CorporationVoltage sensing, autoselecting aircraft power supply interface
Cooperative ClassificationH01H3/40