US1411996A - Elevator-gate-operating device - Google Patents

Description

J. E. W. FOGAL- ELEVATOR GATE OPERATING DEVICE. APPLICATION FILED JULY 16, 1920.-

3 SHEETS-SHEET I.

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E. W. FOGAL. ELEVATOR GATE OPERATING DEVICE.

APPLICATION FILED JULY 16, 1920.

Patented Apr. 4,

3 SHEETSSHEET 3- INVENTOK (ZZZ/F 0 m ATTORNEYS g U lTED Smarts WHE F I j Joann, w. EOGAL, or QUINCY, ILLINOIS.

' ELEV ATOR-GATE- OPERAIING DEVICE.

Application fiiea July 16,

To all whom it may concern:

Belt-known that 1, JOHN E. W. FoeAL, a citizen of the United States, and aresident of Quincy, in the county of Adams and State of Illinois, have invented a new anduseful Improvement in Elevator Gate Operating Devices, of which'the following is a full, clear, andexact description.

My invention relates to improvements in elevator gate operating devices, and it consists in the combinations, constructions and arrangements herein described and claimed. f An object of the invention is to provide a device, by means of which a gate onthe end ot-an elevator car may be raised atwill, and

which, when raised, will'also raise a hatch A further ob will-to cause'the opening of the"elevator gatean d alsothejhatch gate. i

further ob'ect of theinvention'is to provide gate operating .means for causing the'raising of the elevator? gate, including 'an'emergency device, which prevents the dropping-of the gate shoul'dthe, cable which raises the gate break.

A further object of the invention is to provide an engagmg mechan sm on the elevator gate which is arranged to engage the hatch gate for raising the latter, with means for normally locking the engaging means out of operativeiposition. f-

Other objects and advantages willappear in the following specification, and the novel features of the inventionwill be particularly pointed out in the appended claims. My invention is illustrated: in the accom- Figure 4 is aifacevi'ew of a hatch' 'gate, a Figure 5 is an end view otthe hatch gate thereby.

a gate of this type, this figure being pri c-marily for the purpose of setting for'thfthe .typkofgate;Operating means to which the Specification of Letters Patent. P t t d Apr. 4, 19212.

1920. Serial No. 396,670.

panying drawings, application, in whioh- Figure 1 is aview'showing an electrically operated means for raising the elevator gate independently of the upward and downward movement of the elevator, 3

Figure 2 is a face view of an elevator gate, Figure 3 is an end view of the gate shown inFi gure shown in Figure l, '7 I F1gure 6 IS a detail view showing portions of the elevator gate operatlngjmechanism,

lation' of the elevator gate operating mechanismwith the hatch gate, and V Figure *8 isa detail' view sh'owing a por' tion of the hatch gate and aplate carried The invention is designed tobe appliedto gates joi'jthe type set forth in the patent to a John E. W. Fogal, Serial No. 1225606 of May 8,1917; thatis to say, to electrically operated gatesvvh'ic'hare raised or. lowered independently-of the upwardior downward movement of the:e1evator.l -Figure 1 shows invention; is applied, since it :will :be under stood that other arrangementsfor raising or flowering the gate, independently' of the upward'or downward movement of the elefrom; the spirit-ofthe inventionl' p 7 7 ReferringtoiF'gure 1,1 denotes the elevator in general. This may be raised or lowered by any suitable means (not'shown).

of an "auxiliarydevice which is fastened to the side wall of" the hatch 2 under the pent house 3. As will beseen from the'drawings, it consists of heads & and 5,, securedto the a sheave casing 7, an upper sheave 8, and; a

lower-sheaveil aie arranged to travel.- A

cable 10'is secured at 11 to the wallv of the hatch, passes downwardly-around the sheave 190 forming part of this x "Figure 7 is a detail view showing'the' re :vator; might: be needy-without departing I In connection with the elevator I make use wall and bearing guide rods 6. along-which 8 and upwardly around the drum 12 in the pent house, which is driven by an electric motor 13. A second cable 14 is secured to the platform of the elevator l, passesaround afixed sheave 15 at the bottom of the elevator shaft, thence upwardly around the sheave 9, downwardly under a fixed sheave 16 attached to the elevator, upwardly over the pulleys l7 and 18, and thence downwardly, being fastened to theelevator gate 19.

It will be seen by this arrangement that when the elevator moves upwardly or down wardly, the cable 14 will pass over the sheaves and pulleys 9, 16, 17 and 18 without effecting the elevator gate 19, because the cable is attached at both ends to parts of the elevator. If, however, the drum 12 is operated to wind up the cable 10, then the sheave casing 7 will be raised, thus pulling on the cable 14 and raising the gate. A reversal of the winding drum 12'will close the gate.

Referring now particularly to Figures 2 and 3, I have shown a gate which consists of a frame 19 having bars 20 whichmay be filled in with spindles, slats, or hardware cloth, if desired. The, upper part of the frame bears a casting 21, in which are mounted rollers 22. The cable 14 is secured toa plate 23, to which are secured short lengths of cable 24 which pass around the rollers 22, and-are. connected to the ends of rods 25, which are disposed in guides 26, and whose ends may extend into notches 27 in vertically disposed guide members 28 at each end of the gate. Each rod is provided witha spring 29 which engages a collar 30 on the rod at one end and one of the guides 26 at the other. WVhen the drum 12 is operated to raise the gate, the upward movement of the cable 14 it will draw the rods 25 out from the notches against the tension ofthe springs 29, so that the gate is free to move upwardly or downwardly 'as long as the weight of the gate is on the cable If the cable should break, the rods 25, under the influence of the'springs 29, will be forced outwardly into the notches 27, thereby preventing the gate from falling. Also, when the gate has reached its lower limit, so that the weight of the gate is taken off from the cable 14, the springs will cause'the rods 25 to enter the notches, thereby locking the gate in position.

' Referring'to Figure 6, it will be seen that I have provided a plate 31, to which is pivotally connected a locking bar 32 which is i normally pressed on by a spring 33. A pawl 34 is carried by a bracket 35 which is slotted to permit a free movement of the pawl. The latter is pivotally mounted at 36 in the bracket for oscillatory movement about its pivot. A spindle 37 is slidably mounted in the bracket 38, passes through the bracket 35 and bears a roller 38 which runs in the arranged to rest on a bracket 44 secured to r the gate guide 28. A U-shaped plate 45 is bolted to the gate and serves as a guide plate for the locking plate 32 to prevent the latter from swinging outwardly.

As will be seen from Figures 7 and 8, a hatch gate 46 is provided with a plate 47 having a rounded lower edge 48, and also a bearing or retaining portion 49 for a pin or shaft 50, which bears at its outer end a roller 51 arranged to run in the guideways 52. The plate 47, as will be seen from Fig ures 4 and 7, is secured to the hatch gate so as to be engaged by the pawl 34 when the latter is swung outwardly, as when the elevator'gateis being raised. It will be understood that a pawl 34 is disposed at each end of the elevator gate, and that the plate 47 is disposed at each end of the hatch gate, each end of the gate being equipped with the engaging apparatus described above.

From the foregoing description of the va-:'

rious parts of the device, the operation thereof may be readily understood. Assume that the elevator gate'is closed. The elevator I may be raised or lowered without operating the gate by the apparatus, such as that forth in Figure 1. Now if it is desired to raise the elevator gate, the motor 13 is energized by closing the energizing circuit (not shown). This will cause the elevator gate to be raised in the manner described. At

-the first upward movement of the elevator gate, the roller 41, which normally rests on the switch arm 42, is lifted, and the switch arm thereby is permitted toraise underthe action of the spring (not shown), so that the circuit of the motor which raises and lowers the elevator is broken. Asstated above, the latter may be of any suitable type.

lVhen the gate has been raised sufficiently, I

the pawl 34, which is overbalanced, swings forwardly, and the end of the locking plate 32 drops down behind the shoulder 54 onthe pawl 34, thereby holding the pawl in its outer position; Now as the elevator gate rises, the hook 40 will engage behind the plate 47, and will carry a hatch gate up with it. It is impossible to start the elevator while they gates are raised, because of the fact that the current has been cut off at the switch 42. On the reversal of the motor 13, the gate will be lowered. lVhen the end 32 of the locking plate 32 reaches the bracket 44 (see Figure 7), any further movement of the elevator gate will cause the locking plate to lift away from the shoulder 54,

thus releasing the pawl, while the contact of the roller 41 with the switch 1-2 will close the switch, and at the same time will cause the pawl to be retracted into the position shown in dotted lines in Figure 7 which is by the pawl when the latter is in its retracted position, said pawl swinging outwardly when the elevator gate is raised, and means carried by the hatch gate and arranged to be engaged by the pawl for raising the hatch ate. 7 g 2. The combination of an elevator, an elevator gate carried thereby, power means for raising and lowering said elevator gate independently of the movement of the elevator, a hatch gate, an 'overbalanced pawl carried by said elevator gate, means for keeping the pawl retracted when the elevator gate is closed, said pawl swinging outwardly 7 when the elevator gate is raised, and means carried by the hatch gate and arranged to be engaged by the pawl for raising the hatch ate. a 3. The combination with an elevator of a vertically movable elevator gate, a hatch gate, an overbalanced pawl carried by said elevator gate, means for holding the pawl normallyin a retracted position when the elevator gate is in its lowered-position, saidpawl swinging outwardly when the elevator gate israised, locking means for locking the pawl in its outer position when the gate: is

raised, andmeans carried by the hatch gate and'a'rranged to beengaged by the pawl for raising the hatch gate.

4. The combination with an elevator of a vertically movable elevator gate, a hatch gate, an overbalanced pawl carried by said elevator gate, means for holding the pawl] normally in a retracted position when the elevator gate is in its lowered position, said pawl swinging outwardly when the elevator gate is raised, locking means for locking the pawl in its outer position when the gate is raised, means carried by the hatch gate-and arranged to be engaged by the pawl for 7 raising the hatch gate, and means formoving the locking means to release the pawl when the elevator gate is lowered. V

5. The combination with an elevator of a vertically movable elevator gate, a hatch V gate, an overbalanced pawl carried by said elevator gate, means for holding the pawl normally in a retracted positionwhen the pawl swinging outwardly when the elevator gate is raised, locking means forlocking the elevator gate is in its lowered position, saidfl pawl in'its' outer position when the gate is raised, means carriedby the hatch gate and arranged to be engaged by the pawl for raise ing the hatch gate, means for moving the locking means to release the pawl when the ranged to be engaged and released by the '75 elevator gate is lowered, and a switch ar- 1 pawl when the elevator gatev is in its low- I ered position.

, r JOHN E. W. E G i

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