US1628011A - Closure member - Google Patents

Description

May 10 1927.

1,628,011 L. R. TOMPKINS CLOSURE MEMBER Filed Feb, Zai 1925 S-Sheets-Sheet 1 May l0, 1927. 1,628,011

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l..- R. 'roMPKlNs CLOSURE MEMBER Filed Feb. 20. 192s e sheets-sheet 4 May 10,1927. 1

L. R. TOMBKINS CLOSURE MEMBESR Filed Feb. 20.y 1925 S'Sheets-Sheet 5 Y May 10, 1927.4 Y L. R. ToMPKlNs CLOSURE MEMBER l Filed'Feb. 20. 1925' e sheets-sheet 6 attenua! pivoted arm 22 (see Figure 10). This arm 1s revolved in a clockwise direction by the energizing of the relay and is adapted to swing a trip member 23 on its pivot. rlhe trip member is normally retained in operative position by means of a spring and is piif'otally mounted on a pin or shaft 25. A bracket 26 is arranged oppor te the trip member and this bracket is adapted to pivotally support an arm 27 w iich arm is provided with a flattened upper portion or face 23 (see Figure 4 and 11). A main trip lever 29 rests upon this fiat tened face 28 and extends from the casing (see Figure 9). The lever is pivotally mounted on a pin 30, carried by a bracket 31 on the side `of the casing and is provided with a yoke 32 on its outer end. Adjacent its inner end, the trip lever is connected to a pair of springs 32, the lower ends of which are anchored in a plate 33 supported by a main shaft 34. rl`he springs normally urge the trip lever tothe dotted line position shown in lrEig/'ure 9 of the drawings and when the relay is energized, the lever adapted to assume this position. A spring 35 is connected to the arm 27 and is adapted to return it to normal position.

A vertically disposed actuating member 3 6 is connected to the main trip lever. As shown, this member is provided with a pair of spaced. flanges' 37, adapted to receive the main trip lever and is secured thereto by means of a pin 33. rlhe lower end of the actuating member is provided with an enlargement 39 adapted to engage an arm 40 when it is depressed. This arm is provideil with a. linger or extension 42, adapted to be received in a notch or recess 43 in a switch actuating arm 44. T he switch actuating arm is carried by a sleeve 45,

mounted on a. shaft 46. rifhefree end of the switch actuating arm is provided withy a recess 47 and this end of the arm is received between pins 43 mounted on a main-switch lever 49. A switch casing 5() is arranged within the main casing and when lthe switch lever 49 is depressed, a movable contact 51 (see Figure 12) is adapted to be moved into engagement with a pair of stationary contacts 52. As shown `(see Figure 3), these stationary contacts are connected to a source of current 53 and to a motor 54 arranged within the casing and the motor is thus put in operation when the relay is energized.

Themotor shaft is provided with a pinion 55 and is connected by a train of gears 56 to the main shaft 34. Externally of the casing, the main shaft is provided with a gear 57 which is loosely mounted thereon and is provided with a hub or extension 53 carrying a disk 59. The arms of the yoke are provided with spaced fingers 60 at their lower ends, which lingers receive the disk 59. Projecting from the face of the hub is a pin 61 and the shaft is also provided with a projecting pin 62. l/Vhen the trip lever 29 swings to the dotted line position, the pins 61 and 62 are moved out of engagement with each other and the springs 15 open the shutter. As the trip lever is returned to normal position by the springs 32, the pin 61 is brought into alinement with the pin 62v and as the shaft revolves, the pinion 57 is revolved when these pins come in Contact with each other. rlhe pinion 57 meshes with a pinion 63 carried by one of the stub shafts 7.

rlhe trip lever 29 is adapted to be returned to normal position, against the tension of springs 32 by means of a cam 64 mounted on the main shaft. As shown (see Figure 5), this cam is adapted to engage the enlargement 39 and raise the trip lever.; In the meantime, the springs 24 and 35 have moved the arm 27 and trip 23 to their normal position to lock the trip lever in Yraised position against the tension of the springs 32 and the trip member 22 is returned to its normal position by means of a spring 65. lWhen .the enlargement 39 moves upwardly, the arm 40 which is secured thereto, also moves upwardly and this raises a pivoted lever 66 which is mounted in an arm 67 carried by the sleeve 45. This lever is provided with a lug 63 on its outer end acapted to be engaged by a second cam 69 carried by the main shaft. When the cam 69 engages the lug 63, the lever 66 is Vmoved longitudi-Y nally, revolving the sleeve 45 andr the shaft 46 in a clockwise direction. rlhis raises the switch lever 42 and the'switch arm 49 to open the motor circuit.

A pair of brake elements 70 are arranged adjacent the motor shaft and carried by arms 71 pivotally: mounted in a suitable supporting member 72. The lower ends of these arms are normally disposed adjacent each other and the brakes are adapted to be actuated by spreading the arms. A brake shaft 73 extends between the two arms and is provided with a cam 74. An arm 75 extends from this'shaft and is connected to a link or lever 76. The outer endof this lever is provided with a slot 77 adapted to receive a pinor shaft 73. This pin is carried by the pivoted lever 66 and when the lever 66 is moved .longitudinally` the lever 76 is also adapted to move and revolve the brake shaft lthrough the crankY lli) lll

member, and an armf81 is connected there-v to. The opposite ends of these arms are pivotally mounted in recesses 82 formed .in the guides The rear edge of this recess is inclined, as at 83, at the proper angle to limit the swing of the arm Sl and thus limitr the opening movement of the shutter or closure member. Springs 84 are connected to the arms adjacent their pivots and the opposite ends of these springs are connected to the guides to normally return.

the arms to their proper position.

The operation of the device will be apparent from theV foregoingv description. When a signal is given over1 the circuit 17, the relay 1,6 .is energized, attracting the plate or bar 2l which, in the manner dcscribed, releases the main trip lever 29.

Y Vilhen the main tripv lever is released, the

gear 57 is moved longitudinally of the main shaft 34 to a point where the outer end of' thepin 6l is beyond the kplane of the pin 62. This releases the restraining means on the shutters and the springs l5 which are under tension,r open the'shutters. rPhe tape 13 causes the shutters to moveV in unison and the arms 81 limit the movement of the shutters.` The shutters are adapted to remaininopen position forfa predetermined length of time, controlled by the revolution lof the shaft 34 and the position of the pinion k57. When the mai-n trip lever 29 lowers, the actuating member 86 and arm y lower the switch lever 44 to 'close the motor switch and start the motor. 1When the motor is started, vthe main Yshaft revolves and during the first portion of its revolution, the gear 57 y is idle during which period of time the firemen are supposed lto use the pole for the purpose of passing to the lower floor. The revolution of the shaft 34 at a slow rate of speed through the train of gears 56 permits suiiicient time for this purpose. As the shaft revolves,.the cam 64 raises the trip lever 29 to its original posi tion, which brings the pin 6l into operative position, with respect 1 to Vthe pin 62 and the gear 57 is then revolved. The revolu-` tion of the gear 57 drives the gear 63 to close one shutterand the movement of the tape 18v onto this shaft unwinds the tape from the other shaft and closes the Aother shutter at the same time.

After the cam y64 `has performed its function by raising the main trip lever to its original position and the trip mechanism hasV assumed its original position, tov` lock the trip lever in raised position against the tension of springs 32 throughv the medium of springs 24, 25, and 65, the cam 69 functions to stop the motor. As stated, this cam moves the lever 66 longiutdinally which swings the switch lever 44 onits pivot to raise the outer end of the switch lever, and thus raise the switch member 49 to open the switch. At the same time, the brake shaft is revolved to move the cam 74 substantially a half revolution and apply the vbrakes to the motor shaft. thus automatically returned to their original position withthe shutters .in closed position and the mechanism ready toy actuate upon .the sounding of another alarm.

The motor circuit'may be employed` for lighting a number of lamps arranged throughout the engine house for the 'period of time that the motor is in operation. As

The parts are f shownv (see Figure 3) one contact 52 is' connected to the motor by a lead wire and the opposite pole of the motor is con# nected to the source of current by a lead wire 86. The other contact is connected to the source of current by a lead wire 87. The lamps 88 diametrically illustrated in Figure 3 of the drawings, may be arranged at any desired points throughout the engine house, and are shunted across the motor circuit. As shown, these lamps are arranged in series with each other, and are connected to the wires 85 and 86 by a'lead wire 89. switch 90 may be arranged in this wire to permit operation of the motor and the closure member without lighting the lamps. Vhen the switch is closed, the lampsv will be lighted whenever the motor is energized cut off. y Y

While thev invention is shown applied to auclosure member adapted to surround the opening adjacent the pole in a lire. engine house, it is, of course,y to be understood 'that it may be applied to the opening of and will be extinguished when the motor is any type of closure member .automatically when a given signal, suchas a hre alarm, is sounded.

It' is tovbe understood that the form of myinvention herewith shown and described is to be taken as a preferred example of the saine, and that various changes in the shape, size, and arrangement ofparts may be resorted to without departing from the spirit of the invention or the scope ofthe subjoined claims.

I claim: nl. In a device ofthe characterdescribed, a closure member having a bias toward open position, a motor to close said member', connecting means between said member and said motor, said connecting means being normally locked against movement to retain said closure' member in closed position, and combined means for unlocking a portion of said connecting` means to permit said closure member to open and for closing a circuit to said motor; said combined means being operable by said motor for connecting said closure member to said motor after a predetermined length of time to close said closure member.

2. ln a device of the character described, a closure member havinp` a bias toward open position, a motor to close said member, a shaft *connected to said motor, driving means operatively connected to said closure member and mounted on said shaft and normally restrained against movement whereby said closure member will be normally retained in closed position, combined means for moving` portion of said driving means longitudinally of said shaft to release said portion 0f said drivingmeans from restraint Aand permit said closure member to'open and for starting said motor, and means for returning said portion of said driving means to its orieinal position during the rotation ofthe shaft by said motor to close said closure member.

3. ln a device of the character described, a closure member, a shaft controlling said member, a pinion mounted on said shaft, a main shaft, a gear loosely mounted on said main shaft and operatively connected to said pinion, a normally engaged clutch connecting` said gear to said main shaft to retain said closure member in closed position, electrically controlled means for releasing said clutch to permit said closure member to open, a motor for revolving said main shaft, and means for reengaging said clutch while said shaft is revolving to cause said closure member to return to its original position.

il. ln a device of the character described,

a closure member having a bias toward open position, a main shaft, rotating means for said shaft, a gear loosely mounted lon said mam shaft and operatively connected to said closure member, a normally engagedv l'utch connecting); said gear to said main shaft to retain said closure member in closed position, atrip member connected to said clutch to disengage it, means controlledby the actuation of said trip member for starting,` the rotating means for said shaft, means for returninO said trip member to normal position whereby said clutch will be reengaged and said closure member returned to closed position, and means for stopping theY i'. ln a device of the character described,

a closure member having` a bias toward open position, a main shaft, a gear loosely mounted on said main shaft and operatively connected to said closure member, a clutch connecting` said gear to said main shaft and norn'ially engaged to retain said closure member in closed position, a trip lever connected to said clutch and adapted to disensaid clutch when actuated, electrically controlled means for actuating said trip lever, an electric motor connected to said shaft, means controlled by the actuation of said trip lever for starting said motor, means for returning said trip lever to its original position, and means for stomping,` the motor when the closure member is closed;

8. A device constructed in accordance with claim 7 wherein said motor is controlled by a switch adapted to be closed by the actuation of said trip lever.

9. A device constructed in accordance With claim 7 wherein said starting means consists of a switch adapted to be closed by the actuation of said trip lever and said stopping means includes a cam on the main shaft adapted to open said switch.

10.91 device constructed in accordance with claim 'T wherein said motor is provided with a brake and said main shaft is provided with a cam adapted to actuate said brake. Y Y Y, lu testimony whereof, I affix my signature.

LEVVIS R. TOMPKNS.

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