US1208095A - Oil-switch. - Google Patents

Description

C. A. CLARK.

0|L SWITCH.

APPLICATION min SEPT. B. 1915.

Patented Dec. 12, 1916.

Witness.

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UNTTED sTATEs PATENT oEEIoE.

CHARLES A. CLARK, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGN- v MENTS, T0 WOOD RIVER IRON WORKS, INC.

OIL-SWITCH.

Application led September 8, 1915.

To all whom t may concern Be it known that 1, CHARLES A. CLARK, a citizen of the United States, and resident of New York, county and State of New York, have invented certain new and useful Improvements in Oil-Switches, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawing representing like parts. I

My invention consists primarily of an oil switch ofthe oil immersed type with contact carrying means that can move only in one direction, in a horizontal plane, to make one series of electrical connections and, upon releasing, the contact carrying means automatically returns to the normal or open position. The second movement of the switch causes the contact carrying means to slide at right angles or longitudinally in a moving carrier, moving diagonally in a horizontal plane and completing a second series of electrical connections. This second series of electrical connections can not be made until the first series are completed and the Contact carrying means returns to the off or normal position. It is so constructed that the contacts,with their insulating carriers, leads and terminal boards, can be easily vremoved from the oil tank without disturbing any of the moving parts or interfering with the operation of the switch itself.

Another feature consists in having the oil tank and upper part of the switch in one unit, the switch itself fastened to that unit making the whole switch practically as one piece. Thus the removableparts, with the exception of the sheet iron protecting cover, consist of the electrical contacts with their insulating carriers, leads and terminal boards. l y f The object of my invention is to provide an oil switch whose operating means and oil tank are constructed' as one unit-or part, which unit or part does not have t0 be disturbed when it is necessary to replace worn out contacts or to see the same, to observe their condition.

Another feature of the oil switch consists of a novel arrangement of its movements which are so arranged that it is mechanically impossible tomake a second or final electrical circuit before completing a first circuit and, furthermore, the operating Specification of Letters Patent.

Patented Dec. 12, 1916.

Serial No. 49,477.

handle can only be moved in one direction m'naking the aforesaid first electrical circui Another novel feature is the guiding of the moving contact'carrying means into positlon so as to complete the second electrical circuit after having completed the first electrical circuit. In the accompanying .drawings Figure 1 1s a plan, partly in section and partly broken away, Fig. 2 is a cross section showing details of the mechanism on line A B.

The oil tank 1 may be of any desired size -or shape to suitthe particular size or style of switch, is divided into two parts and held together by bolts 2, the upper part, 3 carrying bosses fl to which is vfastened the movement. The feet on frame 3 are provided with holes 56' for bolting the switch to its support. Part 3 has an extension 5 into which slides the fixed contact carrying means 6 with the contacts 7 and a boss 8 which holds into position two pins 9 and 10 between which is the spring 11, said spring allowing the pin 21 to ride over the surface of the guide 12 upon the return of the moving board or contact carrying means, said guide 12 being pivoted to the lower part of the extension 5 by' the pivot 13 and the second position of the moving contact carrying means being shown by the dotted lines 63. The extension 5 also has four bosses 14: by

`means of which are held the four guiding pins 15, held in place by the pins 16 and whose purpose is to guide the moving contact carrying means in the proper direction, through the guiding bosses 64 on frame 25.

The moving' contact carrying means 67 with the contacts 17, springs 18 and nuts 19,

slides into the U-shaped frame 20 which has 'fixed thereto three pins 21, 22 and 23. Pins 22 and 23 are used as guides for the contact carrying means 67'when the said contact carrying means is moved by the handle 24 into the second ,position The U-shaped frame 20 is carried in another U-shaped frame 25 and the Vguide pin 21 which is part of frame 20 projects through a slot 26 in frame 25, so that when guide 12 is in the second operating position, guide pin 21 will slide against the face 27 of guide 12 and cause the moving contact carrying means 67 to slide lengthwise or longitudinally in the frame 25 on pins 22 and 23, compressing the return spring 28, acting between frames 25 and 20, at the same time the moving contact carrying means will move diagonally toward the fixed contact carrying means 6. The final position of the moving contact carrying means is shown in a partly dotted outline 29. rllhe til-shaped frame 25 also carries two bosses 30 and 31 which act as pivots for the arm 32 and said bosses slide in slots one oit' which is shown by 33. The upper part of the arm or frame 32 is pivoted in the bosses 4, one on each side of lthe casting, by the pivots 34 and 35. One end of this arm 82 also carries the lug 36, with the adjusting slot 37, clamping piece 38 and lock nut IThe handle 24, shown dotted in Fig. 2 and full in Fig. l, is also shown dotted in the operating position 40. y

The clamping piece 38 carries a link 4l which is connected to a lever 42, pivoted at 43, carrying a pawl 44 which is pivoted at 45 on link 42 and upon movement of this link 41, pawl 44 moves cam wheel 46 by means of the teeth 47 in the same. lWhen this wheel 46 moves it forces the pin 9 out of the recess 48, down the inclined surface in said cam on the surface 49, thus causing guide l2 to be held under pressure of spring l1 until the guide pin 2l is in its normal position, when the guide l2 will take a position in front of pin 2l so that upon further movement of the handle 24, the moving contact means 67 will proceed into position 29 and complete another electrical circuit.

Connected to lever 42 is a lug 50 carrying on its end the laminations 5l held into 50 by rivets or other suitable means 52. When the lever 42 is moved the laminations 51 are brought into position 58 against the magnet 54, also built up of laminations and which operate to hold the switch in its inal position 29, only when current is applied to this magnet 54, which current is applied only when the switch has completed the second electrical circuit as shown by position 29.

On the upper part of the oil tank 3 is a cover 57, fastened thereto by screws 58, one purpose of which is to keep foreign material, etc., from the switch interior and another purpose is to hold the sliding terminal board 59 which slides in grooves 60 and 6l in casting 3, so that when the cover 57 is removed, the contact carrying means 6 and 67 as well as the terminal board 59, with the cables or leads 62, can be removed from the switch and examined or repaired.

To provide for removing oil from the tank l a pipe plug 68 is provided, which when removed will drain the oil tank of oil, etc., thus allowing fresh oil to be placed into the tank without removing or disturbing the switch proper.

To return the movement to its normal open position, a spring 64 is provided, connected to lug 36 and boss 65 on frame 3 and to limit the movement of the switch the stop lug 66 is used.

Having thus described my invention, I claim as new and desire to secure by Letters Patent z* l. In an electric switch, a reciprocable, laterally shiftable contact carrying member, contacts mounted thereon, coperating fixed contacts, actuating means adapted to reciprocate said member into engagement with said fixed cont-acts, and means for laterally shifting said member upon alternate actuations thereof.

2. in an electric oil switch, a reciprocable, laterally shiftable removable member carrying contacts, a coperating removable fixed contact member having contacts motmted thereon, actuating means adapted to reciprocate said member into engagement with said fixed contacts and means for laterally shifting said member upon alternate actuations thereof.

3. In an electric oil switch, an oil tank and fra-me combined as one unit, carrying a reciprocable, laterally shittable removable sliding contact carrying member with contacts mounted thereon, a coperating removably sliding fixed contact member having contacts mounted thereon, actuating means adapted to reciprocate said member into engagement with said fixed contacts and means for laterally shifting said member upon alternate actuations thereof.

4. In an electric oil switch, a tank and frame unit carrying a reciprocable, laterally shiftable removable sliding contact carrying member with compressible contacts mounted thereon, a coperating removably sliding fixed contact member having noncompressible contacts mounted thereon, ac-

tuating means adapted to reciprocate said member into engagement with said fixed contacts and means for laterally shifting said member upon alternate actuations thereof.

5. In an electric oil switch, a tank and frame unit carrying a reciprocable, laterally shiftable removable sliding contact carrying member with compressible contacts mounted thereon, a coperating removable sliding iixed contact member having noncompressible contacts mounted thereon, actuating means adapted to reciprocate said member into. engagement with said xed contacts, means for laterally shifting said member upon alternate actuations thereof and means for holding said switch after having moved it laterally to complete an electric circuit or circuits.

6. In an electric oil switch, a tank and frame unit carrying a reciprocable laterally shiftable removable sliding contact carrying member with compressible contacts mounted thereon, a coperating removable sliding fixed contact member having noncompressible contacts mounted thereon, accircuit or circuits and means for returning tuatng means adapted to reciprocate said said switch to the first or off position. member into enfavement with the fixed contacts, means tfno; laterally shifting said CHARLES A' CLARK member upon alternate actuatons thereof, Vitnesses: means for holding said swltch after having ARTHUR W. HAZLETT, moved 1t laterally to complete an electrical PHILIP F. RI-IoADEs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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