US1250324A - Electrical switch instrumentality. - Google Patents

Description

ELECTRICAL SWITCH INSTRUMENTALITY. APPLICATION FILED FEB. l2, |916.

H.F.KRANTZ.

Patented Deo. 18, 1917.

H. F. K'RANTZ.

ELECTRICAL SWITCH INSTRUMENTALITY. APPLICATION FILED FEB. 12. 1916.

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HUBERT vIi". KRANTZ, 0F BRQKLYN, NEW' TIGRE.

ELECTRICAL SWITCH IhTSTRUMENTALITY.

Specification of Letters Patent. Patented Bee.. 18, 'ligt' Y.,

@riginal application filed March 13, 1915, Serial No. 14,130. Renewed april 11, 1916, Serial No. 90,159. Divided and this application filed February l2, 1916. Serial No. 77,878.

fb uZZ whom it, may concern.'

lle it l'inown that l, HUBERT F. KRANTZ, a citizen of the United States, and residing at Brooklyn, in the county of Kings and State of New York, have invented a new,

and Improved Electrical Switch lnstrumentality, of which the following is a full disclosure.

This invention is a division'of my copend ing'case No. 14,130 tiled March 13, 1915,

and renewed April l1, 1916, Serial No. 90,519, and its subject-matter is more espe cially directed to a switch-operating instrumentality so constructed as to harmonize.

with a simplified arrangement of a panel- `board of the type enabling one or more branclrline circuits to be connected or dis connected with the main supply or with bus bars connected therewith. y

- Among the objects of this invention are, (a) to create a compact few-part switchniovinp; mechanism conducive to a greatly simpliied panel board arrangement; (b) to provide a switch-mechanism especially suit able for direct coperation with the various branclnline connections; and (c) to provide a switch-mechanism peculiarly well adapted for actuation manually or otherwise from the front face of a panel board and having all parts save the operating,` handles located out of sight, and designed in a manner simple and durable yet capable oty carryin excessive currents and of making ve y quick breaks.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysisof this invention.

This invention accordingly consists in the features of construction, combinations of parts, and in lthe unique relations of the members and in the relative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the 4underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a prcferreddform have been annexed as a part of this disclosure, and in such' drawings, like characters of reference denote corresponding parts throughout all the views of which switch mechanism constriictcd in accordance with this invention and showing the saine the arrangement.

- Fig. 2 is a sectional View taken substan tially upon the plane. of line ll of liig. 1.

Fig. is a view similar to that shown in Fig. 1, but illustrating; the switch mechaf nisrn in the olf position, and

Fig. fl is a perspective View of a switch. of this invention showing the same in operative position upon the rear side of the switch board.V

Continuing now, by way of4 a more detailed analysis ofthe primary characteristics of this invention, A designates a board of insulating material, as of slate, marble or the like, which forms the front exposed fa'ce of the panel carrying the operatinghandles and on the rear-side of which are mounted the various parts arranged in accordance with this invention. A branch line contact carrier B vis spaced from the rear surface of the board and supports a plurality of branch line contacts, l, 2 and 3 together with suitable fuses 4t, 5 and 6 which are connected with branch line wires 7, 8 and 9,' said wires'being` supported bythe carrier B.

Bus bars, ai, jz/ and e are supported at the rear surface of the board A in spaced relan tion to each other one for each of the contacts l, 2 and 3.

The switch blades G, G and G are supported by the carrier C which is made up of a strip of sheet metal bent to form opposite clamp plates 25 and 26 between which the switch blades are clamped in spaced substantially parallel relation. The carrier ex# tends transversely of the blades substantially midway of their length as clearlyl HOV - the position shown by Fig. l,

dependently formed and attached to the base board so thatl they may be employed.

or supporting switch blade. carriers of vary'- ing lengths.

The switch blades are iiexible so that When pressed into engagement with the bus bars and branch line contacts they are caused to lien to a greater or less extent and thereby to store energy Within themselves tending to return the carrier'to the oil position. A coil spring 28 has one of its ends 17 xed to the extension l0, as by being received Within a transverse opening 18, and has its other end, as 19 xed to the'support 12 as by being received Within an aperture 20. rlfhis spring is arranged and tensioned to urged the carrier and switch blade into full olf position.

The ends of the clamp plates forming the carrier C adjacent the support 12 are bent at right angles as at 15 so as to constitute a laterally extending arm for the carrier by means of which the carrier may be swung from an operating handle I at the front of the hoard: The bent ends of the plates are` spaced apart to receive a link CZ which is connected'thereto by a pin c, said link constituting one element of a toggle. The other element of the 'toggle is iade up of. two links c and ,t Which are pivotally connected at one end to the support 12 by a pin a and at theother endto the free end of the link al by a pivot pin o constituting the knuckle of the toggle. The parts are so proportioned that when the links al and e have assumed (the pivot being slightly overthrown beyond the center line ato c), the switch blades G, G and G will press tightly against` theirresp'ective contactsso as to "spring the parts as shown in Fig. 1. A suitable means for limiting movement of the toggle in its made and broken positions such as the stop pins and 31 may be provided, or'the supporting plate 12 may -be formed with an arcuate slot 21 into which one end of the pivot pin b extends, the opposite end Walls of the 'slot constituting stops against which the pin b engages. This arrangement is combined with a lost motion operatingdevice constructed in such va manner that the instant the toggle is broken, the lost motionwillprovide for a free and unimpeded continuation of the movement of the toggle in its collapsing direction under 1the impulse of the` spring 28, augmented momentarily at the beginning of the throvi7 bythe reaction of the flexed-blades G, G and G. The eect of this is to cause an exceedingly abrupt break, since the spring tension is greatest a fevv degrees prior to the actual disconnecting station and when the greatest force is needed to overcome the'momentum or inertia of the. parts. The spring 284 will complete the throw of the parte and bring the knowledge readily adapt gLacasse toggle into its collapsed state with the switch blades in an. intermediate position substantiallyas shown in Fig. 3.

The lost-motion device may embody a member providing a portion h serving as a contactsurface adapted to advance and -press against pivot tor 'other suitable part associated with the toggle, so that after its contact has been established, the toggle Will positively .be moved so that the pin may cross the centerline and be able thereupon to travel freely and Without restriction in the idle motion in the'part H so that when the surface 7L unbreaks the toggle, the surface ic Will not impede its collapsing. The member H may, in turn, be actuated in any suitable manner, manually or otherwise, as by means of a hand-lever I pivoted at 32 to a support secured to the outer face of 'the insulating-board A and pivoted at 34 or otherwise connected to the part H so that in one position of the handle l, say in its vertical, the toggle will be closed to establish contact throughl the switch-blade` and in its vother position the toggle will be broken to -disestablish the electrical connection.

Without further analysis, the foregoing will so fully reveal the gist ofthis invention that others can by applying current it forvarious applications Without omitting certain features that from thestandpoint of the prior art faiixy constitute essential characteristics ci the generic or specific aspects of this invention, 4and therefore, such adaptations should and are intended to be comprehended Within the meaning andl range of equivalency of the' following claims; f

Having thus revealed this invention, I claim as nevr and desire to secure the following combinations ofA elements, or equivalents, thereof, by Letters Patent of the United States:

1. 1n a switch mechanism for dead-face which they coperate as to provide sucient i boards, the combination comprising a double 'ended switch member which is pivotally mounted intermediate lits ends to swing said ends simultanconsly for disposing them into and out of 4eng'anient withsuitably spaced contact members, supporting means for the switch member of a. character to support the switchl member from one surface of a suitable board with the pivotal axis arrangd so that one end' of the switch member will ting the several switch blades to swing in swing outwardly away from a suitable contact which may be carried by the adjacent surface portion of said board while the 0ppositc end of the switch member swings inwardly toward the board and out of engagement with a contact which may be spaced from the board, an operating arm fixed to the switch member projecting laterally therefrom in a plane substantially at right angles to the board by means of which the switch member may be swung, toggle means for swinging said arm comprising a pair of links pivotally connected together and to said support and arm to oscillatel substantially in said mentioned plane, together with an actuating member associated with the toggle also movable in said mentioned plane adapted to extend from the toggle through the board for actuating the toggle from the opposite side of the board.

2. In combination, a plurality of switch blades, a carrier for the switch blades comprisin'g a member extending transversely of the switch blades and having means to retain the switch blades fixed theretoto extend laterally therefrom spaced apart along the length of the carrier, pivotal extensions provi-ded at the oppositeends of the carrier by means of which the carrier may be pivotally supported to provide means permitunison into and out of engagement with appropriately arranged contact members, supporting means for said extensions, a spring for swinging the carrier and blades in one direction, one of said pivot extensions having a transverse aperture formed therein rev ceiving one end of the spring, the opposite end of the spring engagingthe support, and means operatively connected with the carrier to swing the same at will against the tension of the spring inthe other direction. 3. In combination, a plurality of switch blades, a carrier for the switch blades coinprising opposite clamp plates from between which the switch blades laterally extend, said clamp plates holding the switch blades spaced apart along the length of the clamp plates, insulating means insulating the switch blades from each other and from the clamp plates, pivotal extensions provided at arranged contact members, supporting means for said extensions, means engaging between one of said extensions and said supporting Copie o!- thi: patent may be obtained for means for urging said carrier in one direction, and means operatively connected with the carrier to swing the same at will in the other direction.

i. A switch mechanism comprising a pivotally 'mounted switch blade carrier, a sup.- port therefor, a flexible switch lblade' carried by the carrier yextending laterally from the pivotal axis thereof, said switch blade having its outer end adapted to be swfung into and out of surface engagement with a suitable contact member, an operating arm also extending laterally from the pivotal axis of the carrier by means of which the carrier and switch blade may be swung, a toggle -connected with sa'id arm movable into made and broken positions for actuating said arm. the switch blade being adapted to be flexed against the contact when the toggle is made, means to move the toggle from made position and permitting unobstructed movement of the toggle to full broken position, the energy in the switch blade being effective when the toggle is moved out of made position for moving the switch. blade in a direction away from the contact, and a spring engaging between said support and a portion of said carrier for insuring swinging movement of said carrier and switch blade to full off position. Y

5. A switch mechanism comprising. a pivotally mounted switch blade, a supporting tions, andthe opposite end walls of said-slot constituting stops against which the'pivot pin engages to limit movement of the toggle in its two positions.

In witness whereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

HUBERT F. KRANTZ..

Witnesses:

S. L. WHEELocx, JOHN L. KoLLE.

ave eents each, by addressing the Commissioner e! Patents. Washington, D. 0.,

'means connected to said pivot pin for actuating the toggle into made and broken posi-

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