US1743741A

US1743741A - Indicating mechanism

Info

Publication number: US1743741A
Application number: US81817A
Authority: US
Inventors: Henry E Warren
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1926-01-16
Filing date: 1926-01-16
Publication date: 1930-01-14
Anticipated expiration: 1947-01-14

Description

Jan. 14, 1930. WARREN 1,743,741

INDI CATING MECHANI SM Filed Jan. 15, 1926 2 Sheets-Sheet 1 "1 I7 I6 \nven-tor:

' Henry E. Warren,

Jan. 14, 1930.

H. E. WARREN INDICATING MECHANISM Filed Jan. 16 -1926 2 Sheets-Sheet 2 Inventor: Henry E. Warren,

mounted in the sleeve 15, which in turn is rotatably mounted in the sleeve M, the latter sleeve being mounted in a suitable bearing in the supporting irameworlt.v

Referring to Fig. 5, it is contemplated that a schedule and position indicator 2'27 of the dis atcner eleve" A U ceivinp; de cs on n con nected, is bv means of a friction of the elevator, T 1e transmitting device 31. .33

. shown, for example,

wheel 32 which bears against the cable is electrically connected with the receiving devices by means oi the conductors 34. A suitable source of alternating current su ply 35 is connected to the field windin s o the transmitting and receiving devices y means of conductors 36. I

'llhe motors 18 of the indicating

devices

27 and 30 are operated by means of asuitable source of alternating current having a frequency which can be varied so that the speed of the motors can be regulated. They are as being connected to a rotary converter 37 which is connected to a direct current supply source 38. The field winding 39 of the rotary converter has an adjustable resistance 40 connected in circuit with it across the supply source 38. By varying the amount of the resistance 40, for example, by means of a contact arm llco o crating; with suitable taps, the speed of t e rotary converter can be regulated so as to vary the frequency supplied to the motors 18 in a well lrnown manner. Thus the dis-.

patcher regulates the speed of the motors 18 so that the pointers l0 and 11 indicate the desired speed of the elevator with respect to suitably graduated scale 42 (Fig. It).

llt will be observed that two schedule indicator pointers to and 11 will be in coincidence twice each revolution where they pass each other and in the shown in Figs, 14;, these pointers e .ch other their two vertical positions when they are pointing upward or downward, A shield or mask &3 is provided in front of the three pointers and this shield has an arcuate slot or opening it which is semicircular in extent and terminates on a vertical line passing through the axis of rotation of the pointers. In other words, the slot a l extends between the points where the pointers 10 and 11 pass each other and is located in one side, shown as the left hand side, of the shield 43. It will thus be observed that the pointers 10 and it come into view alternately as they pass by the slot 44 and thus indicate alternately the v plurality 0 a,ves,ver

tvard with the elevator. The pointer 10 is arranged to move in a counterclockwise direction, and, therefore, moves a downward direction when in. vie r is provided wit.

arrow 45 which indicates this direction of movement, The pointer 11, which is driven in a clockwise direction, moves in an upward direction when in view and is likewise provided with an arrow 4:5 indicating this direction of movement.

The pointer 12 has a range 01'? movement of 138 corresponding with the travel of the elevator and is arranged to be in view through the aperture 44. In the operation of the elevator the operator on the cab watches the indicator 27 and controls the elevator so as to maintainthe pointer 12 substantially in coincidence with that one of the schedule pointers which is in view. The indicator 30 shows the dispatcher how near to schedule the elevator is running.

It will be observed that by means of this arrangement the oscillatory movements of the shaft 23, in accordance with the upward and downward movements of the elevator, may be compared with the rotary motion of the shaft 21 under the control of .the dispatcher. For convenience the shaft '23 may be termed a position member and the shaft 21 may be termed a schedule member. Obviously the movements of the oscillating position memher and the rotating schedule member may be compared in various other ways. For example, the position member 23 may operate a pointers moving in opposite directions so as to change its oscillatory motion into apparent rotary motion which may then be compared with a single pointer driven by two hands 10 and 11 may be brought into view various other Ways than by the use of the mesh 13, for example, by illuminating each land, as by a beam of light, while it passes over a predetermined portion of the dial.

will be understood that suitable operat mechanism is provided for the elevator; for example, it may be driven by means of an electric motor which is geared to a hoisting" rum 43 around which the cable 33 is wound, 1 1e cable then passing around an idler wheel t9 and having its end connected to a counterweight 50.

In order to make correct-ions for any sli page which may occur between the cable and the driving wheel 32 or the transmitting device 31, means are provided for synchronizing the transmitting device each trip of the elevator. A V shaped notch 5411s provided in the periphery of the friction wheel 32 and a V shaped cam 51 is provided on a pivoted arm 52 in a position to be opposite the notch '54- when the elevator reaches its uppermost position. Just before the elevator reaches this position, a knob 53 on the cable engages the free end of the lever 52 and forces the cam 51 into the notch. lhe engagement of the cam.

with the inclined sides of the notch causes the wheel 32 to slip with respect to the cable when necessary and thus brings the wheel into a predetermined position with relation to the cable.

While I have described my invention as embodied in concrete form and as operating in a specific manner in accordance with the provisions of the patent statutes, it should be un derstood that I do not limit my invention thereto, since various modifications" thereof will suggest themselves to those skilled in the art without departing from the spirit of my invention, the scope of which is set forth in the annexed claims. v

What l claim as new and desire to secure by Letters Patent of the United States is:

l. A schedule and position indicating system for elevators and the like, comprising a pair of indicating members, means mounting said members for rotation'about a common axis, means for driving said members in opposite directions independently of the movements of said elevator, so that said members move alternately in a predetermined path over a predetermined half revolution of their travel, a third indicating member mounted for movement in said path over said half revolution, and means for driving said third member in accordance with the movements of the elevator.

2. A schedule indicator for elevators and the like, comprising a pair of indicating members having predetermined common paths of movement, and means for moving said members in opposite directions alternately over a portion of said predetermined paths at speeds corresponding to the desired upward and downward speeds of the elevator. whereby said members indicate alternately the desired upward and downward movements of the elevator.

3. A schedule indicator for elevators and the like, comprising a pair of indicating members on said elevator, means mounting said indicating members for rotation about a common axis, and means for rotating said membars in opposite directions alternately over a predetermined portion of their travel'at equal s eeds corresponding to the desired speed 0 the elevator, whereby said members indicate respectively the desired upward and downward movements of the elevator with respect to said predetermined portion of their travel.

4. A schedule indicator for elevators and the like, comprising separate indicating members, means mounting said indicating memher: on said elevator in juxtaposition to each other for indicating the upward and downward movements of the elevator respectively, visual shielding means for said members during a predetermined portion of their travel, and means for driving said members in opposite directions so that said members move alternately over the remaining portion of the desired speed of the elevator, and means i for obscuring said indicating members alternately during half of each revolution wherebysaid members move into view alternately during the remaining half of each revolution to indicate the desired upward and downward movements of the elevator.

6. A. schedule indicator for elevators and the like, comprising a pair of indicating'members, means mounting said indicating members for rotation about a common pivot axis, means for driving said members in opposite directions at the same speed to indicate the desired movements of the elevator, means for varying the speed of said driving means, and a shield for said members provided with an aperture extending between the points where said members are coincident so that said members move into view alternately behind said aperture throughout a given half revolution oi their travel to indicate respectively the desired upward and downward movements of the elevator.

7. An indicating device comprising a pair of indicating members, means mounting said indicating members for rotation about a common axis, means for rotating said members in opposite directions, and means for obscuring said members alternately so that said members come into View alternately to simulate a single member having oscillatory motion.

8. An indicating device comprising a pair or indicating members, means mounting said indicating members for rotation about a common axis, means for rotating said members at equal speeds in opposite directions whereby said members move into coincidence each half revolution, and means for obscuring said members over one half revolution whereby said members move into view alternately in the other half revolution to simulate a single member having oscillatory motion.

9. A schedule indicating device comprising a pair of indicating hands, means mounting said indicating hands for rotation about a common axis, a shield for said hands provided with an aperture through which said e1 I mes /er.

hands reey be viewed throughout a half her, meens for driving schedule inrevolution, and eens for rotating said dicetor members in opposite QZTSC URS alter hands in o osite directions so as to move netelv over the pa 1 non. mm-

s said aperture alternately to cetormeino l oosition single heed having oscilietory end dire' v v I gj-M m posi ion ssid in dsehedn. c

one of said r d eievetor whereby on by said elevator beck accordance with its upward end o i e schedule member,

schedule member invoter, e scale, indicator members cooperating with sei-d scele,

and dri connections between said indimembers and said position and schedule :iembers respectively whereby said indicator 1% members show the actual and desired positions of the eievzitor.

12. A schedule and position indicator for elevators and the like, comprising e posi= 536 tion member, a driving connection between 2% said member and said elevator whereby said member is driven by said elevator back end forth in accordance with the'upwerd and downward movements thereof, a schedule member, means for driving said schedule 2m member independently of the elevator, indicator members, means mounting said indicstor members in juxtaposition and driving connections between said indicator mom so bers and said position and schedule members 345 respectively whereby said indicator members move together when the elevator is following the desired schedule,

13. A position and scheduleindicator for 55 elevators and the like, comprising a position indicator member, a driving connection between said position indicator member and said elevator whereby said indicator member is driven in one or the other of two-directions to in accordance with the movements of the ele- 4 vator, a pair of schedule indicator members for indicating the desired upward and downward movements of the elevator, means I mounting said schedule indicator members in i 55 'uxtaposition to said position indicetormem- M}