US872400A - Electromagnetically-operated mechanism. - Google Patents

Description

No. 872,400. PATENTED DEC. 3, 1907. J. M. ANDERSEN. ELBGTROMAGNETICALLY OPERATED MECHANISM.

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'No. 872,400. PATENTED DEC. 3, 1907.

, J. M. ANDBRSEN. ELBGTROMAGNETIGALLY OPERATED MECHANISM.

APPLI OATION TILED JAN. 20, 1906.

5 SHEETS-SHEET 2.

No. 872,400. PATENTED DEC. 3, 1907.

- J. M. ANDERSEN.

ELECTROMAGNETIOALLY OPERATED MECHANISM.

APPLICATION FILED JAN, 20, 1906.

6 SHEETS-SHEET 3.

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PATENTED DEC. 3, 190?.

J. ANDERSEN. ELBGTROMAGNBTIGALLY OPERATED MECHANISM.

APPLIOATIOH FILED JAN. 20, 19.06.

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n w Mm 3% a d H a a as H 3 km A V 3 O. 872,400. PATENTED DEC. 3, 1907.

J. M. ANDERSEN. ELEGTROMAGNETIOALLY OPERATED MECHANISM.

APPLICATION FILED JAN. 20, 190B.

5 SHEETS-SHEET 5v 23 2622 aasgJ. 7 [i2 again 1 UNITED STATES PATENT OFFICE.

JOIIAN M. ANDERSEN, OF BOSTON, MXSSACHLSETTS, ASSIGNOR TO ALBERT AND J. M. AN-

DERSON MANUFACTURING COMPANY, OF

MAINE.

BOSTON, MASSACHUSETTS, A CORPORATION E LF ROMAGNETICALLY-OPERATED ME CHANISM.

Specification of Letters Patent.

Patented Dec 3, 1907.

Application fi anuary 20. 1906. Serial No. 296.953-

a citizen of the United States. residing in Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Electromagnetioally-Operated Mechanism, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to electromagneticallyoperated mechanism for effecting the operation of other devices, whereby said devlces'may be controlled from a station or point remote from the place or places where the devices are located. L

The invention is especially adapted among other uses to be employed for operating substantially large electric switches.-

The particular features of the invention will be pointed out in the claims at the end of this specification.

Figure 1 is a plan view of an operating mechanism embodying this invention. Fig. 2, a side elevation of the mecham sm shown in Fig. 1. Fig. 3, a partial section and side elevation showing the apparatus in its operative position. Fig. 4, a detail to be referred to. Fig. 5, a'longitudinal vertical sec tion on the line Fig. 1, and Fig. 6, an

end elevation looking toward the left, Fig. 5.

. casting a.

In the apparatus herein shown as embodying this invention it represents a metal frame or casting, which is provided on its under side with two recesses or chambers b, c, preferably cylindrical in shape and containing lectromagnets d, e, which have their spools mounted upon cores g, forming part of the The electromagnets d, e, have oo perating with them disk-shaped armatures h, 71, secured to rods or stems j, k, which are extended up through holes in the cores f, g. The magnet (1 may be made materially larger than the magnet e, and may be desi nated the lifting or working magnet, whi e the magnet a may be designated the release magnet. The working magnet d has its armature operatively connected with the device to be actuated, which device is not herein shown as it may be of various constructions, but for the purpose of this invention it ma be supposed to be the movable member o a large electric switch. In the present instance, the armature it has its-" tem or rodj connected with a lever 1n, com rising two parallel parts or members locate above the casting a and mounted on a pivot shaft or pin it on op osite sides of an 11' right 0 forming art of t e casting a. The evermembers m a so straddle a second upright p arranged in line with the upright o. The lever members m are tied together by the tie rods or bolts 1' and at their front end by a cross bar 8, so t at the two members m form one lever which is joined to the stem or rod of the armature, and this may be accomplished as herein shown by links 10 connecting lugs or projections 12 on the lever members m with a shaft or pin 13 extended through a hub or sleeve 14 formed on or attached to the armature stem or red It will thus be seen that when the working magnet (Z is energized, its armature h is attracted, and the rod j is lifted, thereby through the links 10 turning the lever m on its ivot 'n so as to elevate the rear end of said ever and lower the. front end thereof. The elevating of the rear end of the lever m moves the device it is desired to operate, which device may be connected with the tie bolt 2- by a rod 16 or in any other suitable manner.

It is desirable to be able to remove the current from the magnet (l as soon as the lever is elevated as described, and for this purpose, a locking device is provided, which engages the lever and retains it in its elevated or operative position until it is desired to again lower the lever and opt-late the device connected to it in the reverse direction or 11121.11 her. :To illustrate: Let it be supposed that the device connected with the lever is an electric switch of large size requiring considerable power to operate it, and that when the lever m is elevated above described, the switch is closed, and when said lever is low ered the switch is opened.

It will. be seen that when the lever m is elevated, the main switch is closed and in order to retain the said switch in this position independently of the magnet (Z, the said lever is engaged with a locking device, herein shown as a lever 20, pivoted at 21 to ears 22 on the casting, and provided at its upper end with a hook or latch 23, whichis adapted to engage the upper side of the cross piece or bar 8 of thelcver m. The locking lever 20 is held in its engaging position by means of a spring 25.

Provision is made for disengaging-the locking lever 20 from the lifting or operating lever, both electrically and by hand.

The release of the lever 20 may be effected electrically as herein shown by energizing the electromagnet. e. The armature g of the electromagnet e has its stem or rod I: extended above ,the top of thecastingand carries.

the center pin 30 of toggle levers 31, 32, the lever 31 being pivoted to the upright 0 and the lever 32 being pivotally connected to the locking lever 20. It is preferred to employ' from the operating lever m and thus releasethe same when the toggle levers are in their straightened position. 1

When the electromagnet e is denergized, the armature i is in its lowered position and the toggle levers 3 1, 32 are substantially 1 straight and the locking "lever 20 is at sue time turned by the spring 25 into its operative position. When however the magnet e is energized, the armature t is attracted and the stem or rod 7c is elevated, thereby turning the levers 31, 32 on the pins 30 as a center and moving the levers 31, 32 into an inclined osi'tion (see Fig. 4), which causes the locking ever'20 to be moved backward out of engagement with the operating or lifting lever m and ermits the latter to be turned.or lowered y the weight attached to or connected with its rear end.

It will be noticed that when the armature i is in its lowered or unattracted position, which position may be termed its weakest position because when the magnet e is energized, thepower of the armature for moving the lev'er 20 is the least, whereas the power of the toggle 31, 32 is the greatest because of its straightened position. As the armature 'L approaches the magnet e, its working strength is increased, and counteracts thediminishing power of the toggles, the power of which di'minishes as the toggles are moved into their inclined position shown in Fig. 4.

Provision is made for cushioning the movement of the lifting lever m in opposite directions, and thus avoid injury to the actuating mechanism and to the parts or device operated by it. For this purpose a cylinder 40 is located above and in line withthe stemor rod 7' of the-lifting magnet d. The cylinder 40 may be made as herein shownand comprises two parts or halves'41, 42, the lower .sides a second contact member; or

which is secured to the lower part as by .screws 43.

The cylinder 40 contains a piston 44 which i is secured to the upper end ,of the rod or stem and cooperates with two ports 45, 46

located intermediate the ends ofthe cylin J der and communicating with afport or passage 47, which extends down through the wall of the cylinder and communicates with the atmosphere. The parts 41, 42 of the cylinder are provided with air admission valves 144, 1415, which are automatically opened by the movement of the piston 44. The piston 44 on its up-movement draws air through the valve 145 into the cylinder below the, piston, and on its down-movement draws air through the valve .144 into cylinder above the piston. .On the upmovement of the piston, the air above the I piston is partially discharged through'the-port 45 and passage 47, and on the down-movement of said piston, the air is partially dis charged through the port 46 and passage 47. 1 The ports-45, 46 are preferably located intermediate the ends of the cylinder, so that the piston 40 in its'movement in opposite directions may cut-oil said ports and thereby form closed air chambers between which not only cushion the movement of the lifting leveribut also prevent the piston from striking the ends'of the cylinder with a severe blow. The lifting levenm may and preferably will constitute a circuit controller for electric circuits, and for this purpose, the said lever has secured to one side thereof a contact plate or'member 5O electrically separated therefrom bysuitable insul-ation' 51, and has secured toji-ts opposite plate 52 which is separated by suitable lhsulation 53.

The contact member or-pid'te 50 006 crates with and is adaptednto electrically connect two terminal brush'es 54,,55, and the contact plate or member-52 cooperates with and is adapted to obnnect two terminal brushes 56, 57. ,s v

The terminal brush s 54, 55 may and preferably will be arranged, so that they are engaged byv the contact plate-5O when the lever mis in its lowered or non-operative position and are disengaged therefrom when the said lever is in its operative or elevated position. v I

The terminals 56, 57 are arranged so that they are disengaged by the'eontact plate 52 when the lever m'is in its lowered or non- 1 operative position-,and are engaged thereby when the said lever is'in'its operative. or, elevated position.

' in comb.

cluded in electric circuit which is closed. at said tori .nals by the contact plate 50, when th m is in its non-operative posid circuit may be utilized for 1 a distant point this position of the lover, or said circuit may be used for any other desir d purpose. The terminal brushes 56, may be included in a separate circuit, which is closed at said terminals by the contact plate 52, when the lever m is in its operative position, and .said circuit may be utilized for indicating at a distant point this position of said lever, or said circuit may be used for any other desired purpose.

Provision is made for closing one oi" the electric circuits' independently of the contact plates carried by the lever m, and in the present instance, a manually operated switch 64- (see Fig. l) is pivoted to lugs or ears 66 on the block 60 to which the brush 55' is connected, and is adapted to engage lugs 67 on the block 60 to which the brush S-tis connected.

One form of apparatus embodying this invention herein shown, but. it is not do sired to limit he invention to the particular construction shown.

Claims.

1. In an apparatus of the class described, in combination, a lever, an olectron'iagnet having its armature connected to said lever to turn the same into its operative position, a locking d vice cooperating with said lever to retain it n its operative position, toggle levers connected with said locking device, an electron ignct having its armature connec-ted'with said toggle levers to release the said lever when said second electrolnagnct is energized, said locking device having pro K We 'vision tor permitting it to be disengaged from said leverindependently of said toggle levers and release magnet, substantially as described.

2. In an pparatus oi the class described, tion, a lever, an clcctromagnct having ts armature connected to said lever to turn the same into its operative position, a locking device coi'ipcrating with said lover to retain it in its operative position, toggle levers connected withsaid locking device. inet having its armature connected with said toggle lovers to release the said'levcr when said second electromagnct is energized, and circuit controllers movable with said lever, and circuit terminals with which said circuit controllers co(')peratc, substantially as dcscribml.

3. In an apparatus of the class described, in combination, a lever, an clectromagnct having, its armature connected o said lover, a halting device cooperating with said lever and engaged thereby when said magnet is energized, toggle levers connected to said locking device, a second electron'iagnct connected with said toggle levers to disengage said locking device from said lever when the said second elertromagnet is energized, and circuit controllers movable with said lever, substantially as described.

4. In an apparatus of the class described, in. combination, a movable device, an electromagnet having its armature connected to said movable device to ellect movement thereof, a locking device cooperating with.

said movable device to lock it in the position into which it is moved when said electromagnet is energized, toggle levers connected with said locking device, and a second electromagnet having its armature connected with said toggle levers to disengage said locking device from said movable device, when said second electromagnet is energized, substantially as described.

5. In an apparatus of the class described, in combination, a movable device, an electromagnet having its armature connected to said movable device to effect movement thereof, a locking device cooperating with .said movable device to lock it in the position into which it is moved when said electromagnet is energized, toggle levers connected to said locking device, a second electromagnet having its armature connected with said tog+ glelevers to disengage the locking device from said movable device, when said second electromagnet is energized, said locking device having provision for being disengaged from said movable device independently of said second electromagnet, and when said toggle levers are intheir substantiallystraight position substantially as described.

6. In an apparatus of the class described, in combination, a casting having chambers on its under side, clectromagnets located in said chambers, armaturcs forsaid electromagnets having stems or rods extended up through the said casting, uprights erected upon said casting, a cylinder supported by said uprights, a. piston in said cylinder hav ing its piston rod connected with the rod or stem of one of said elmztromagnets, an operating lever pivoted to one of said uprights, means for connecting said operating lever with the stem. or rod of one of said clectromagnets, a locking lever cooperating with said operating lever, toggle levers connected to said locking lever and to the rod or stem of the second clectromagnet, substantially as described.

7. In an apparatus of the class described, in combination, a casting having chambers on its under side, electromagnets located in said chambers, armaturcs for said electromagnets having stems or rods extended up through the said casting, uprights erected upon said casting, a cylinder supported by said uprights, a piston in said cylinder having its piston rod connected with the rod or stem of one of said electromagnets, an operating lever pivoted to one of said uprights, means for connecting said operating lever with the stem-or rod of one of said electromagnets, a locking lever cooperating with said 0 crating lever, toggle levers connected to sai lockin leverand to the rod 'or stem of the second electromagnet, contact devices carried by said operating lever, a circuit terminal coopcrating with one of said contact devices in one position of said operating lever, and a second circuit terminal'cooperating with the other ofsaid contact devices in another osition of said operating lever, substantial y as described. I

8. The combination with an electromagnet and its armature, of toggle levers conv straight position, for the p nected to said armature and arranged to occu y a'substantially straight position when said electromagnet 1s denergized and to occupy a position inclined to each other when said electromagnet is energized, a device actuated by said toggle levers, and a pin and slot connection between said device and one of said toggle levers to permit said device to be moved independently of'the toggle levers when the latter are, "in their substantially ose specific 9. In an apparatusof the-c ass described,

name to this specification in'the in combination, a movable device, an electromagnet to effect movement of said device.

intoone-position, means for lockingi movable device in the position into w chit is moved by said electromagnet,,toggle levers connected to said locking dd'vlce, and a sec-i.

said

ond electromagnet cooperating with said togr' i movable device, substantially. as described. 10. In an apparatus of the class described, in combination, a movable device, an electromagnet to efiect movement of said device,- into one position, means for lockinfil said i 7 j.

'ch it movable device in the position into w is moved by said electromagnet, togglalevers connected with said locking device a "secondgle levers to effect the release of the-said

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