US1399905A - Gate device - Google Patents

Description

E. B. TH URSTON.

"GATE DEVICE.

' APPLICATION FILED MAY I51 1918. 1,399,905. Patented Dec. 13, 1-921.

Y 3 SHEETS-SHEET i- T Fl 13.:

34 53 FIG.E 5 v E. B; THURSTON.

GATE DEVICE.

APPLICATION FILED MAY I5. 1918.

Patented D60; 13,1921.

3 SHIRTS-SHEET 2.

FIGS

lmlllarpall E. B. THURSTON,

GAT E'D EVICE. APPLICATION- FILED MAY-15,1918.

1,399,905, v Patented Dec.'13,-1921.

UNITED STATES PATENT OFFICE.

ERNEST B. THURSTON, OF TOLEDO, OHIO, ASSIGNOR TO THE HAUGHTON ELEVATOR G,

MACHINE 00., OF TOLEDO, OHIO, A CORPORATION OF OHIO.

GATE DEVICE.

Specification of Letters Patent. Patented De 13 1921 Application filed May 15, 1918. Serial No. 234,594.

To all "whom it may concern:

Be it known that I, ERNEST B. THURs- TON, of Toledo, Ohio, a citizen of the United States of America, have invented new and useful Grate Devices, of which the following is a specification.

This invention relates to features of gate operation.

This invention has utility when incorporated in gates or doors, especially for elevators.

Referring to the drawings:

Figure 1 is a fragmentary view of an elevator Well with a car therein involving features of the invention;

Fig. 2 is a plan view of the gate operating device of Fig. 1;

Fig. 3 is a diagrammatic detail view showing the starting of the operating device in taking hold of the running line from the car gate for slow speed starting of gate lift, the parts beingshifted from the normal or free running position for the gate line as shown in Fig. 1;

Fig. 4 is a view similar to Fig. 3 but after passing the high intermediate travel speed for the gate and as approaching the slow speed of fully open position for the gate;

Fig. 5 is a detail view of'the car and well gates, with the car at a landing;

Fig. 6 is a view similar to Fig. 5, but with the gates partially open in their synchronous travel;

Fig. 7 shows the two-part well gate and car gate of Fig. 5 in fully open position;

Fig. 8 is a detail view, on an enlarged scale of the automatic connecting device between the car gate and well gate; showing the parts in connected relation;

Fig. 9 is a view similarto Fig. 8 with the gates disconnected;

' Fig. 10 is a fragmentary transverse view of the dog carrying block portionof the gate connecting device of Fig. 8;

Fig. 11 is a view from the landing side of the car and well gates in the position shown in Fig. 5, that is, closed;

Fig. 12 is a view similar to Fig. 11, with the gates half open as shown in end view in Fig. 6;

Fig. 13 is a fragmentary detail view from a guide rail end of the car gate showing the safety lock for the gate as to the car;

Fig. 14 is a plan view of the device of Fig. 13; and

counterweight 8 traveling oppositely to the car 5. The car 5 is provided with a pair of T-shaped vertically extending rails forming guides 9 for the one-piece lift gate or door 10 therebetween, which in drop position may rest on the floor 11 of the car 5.

The gate 10 has near each guide 9 a bracket 12 having pivot pin 13 for shiftable member 14 having the opposing jaws 15 embracing the guide 9 and normally rocked to pinch or grip such guide by compressionv spring 16; However, without the spring 16, in travel of the gate 10 relatively to the guide 9, the proximity of the jaws 15 to the guide tends automatically to throw the member 14 into locking position as to the guide 9 for-holding'the'gate10. For releasing this automatic 'or safety lock, normally.

acting topreclude any dropping ofthe gateas to the car, a cable 17, engages the member 14c adjacent its free end andpasses about pulley 18 fixed to the gate 10, thence centrallyIof the gate 10 about gate carried p'ulleys 19 forming therebetween a bight for the pulley block 20. Hoist line 21 connected to the block 20, in its initial pull travel lengthens the bight between pulleys 19 of the gate connectedsection 17 of the hoist line, compressing springs 16 and thus releasing the gate 10 for travel by taking the load or'weight of the gate 10 off the car 5. This main hoist line 21 for the gate has free running during cartravel by passing up the well 1, about pulleys 22, 2'3, 24,

25, to the car counterweight 8.

The hoist line 21 is effectivefor gate operation by the interposition therealongof a I with speed reduction mechanism and may rotate the frame 29 about 200. This frame 29 carries rollers or anti-friction guides 30, 31, 32, 33, and for lifting actuation of gate 10, moves clockwise from the position in Fig. 1 to have the rollers 31, 32, catch the free running line 21. therebetween, and at 7 slow velocity initiate travel of the gate 10.

From this position of F ig. 3, spleeding up occurs as rollers 30,, 33, engage tie line 21. The horizontal component of this. travel of the rollers 30, 33, gradually diminishes as the rollers approach the position shown in Fig. l, thus slowing up the travel of gate 10.-before stopping.- With this gradual pick-up, high intermediate travel rate and slow-down for stopping, there is automatically effected a smoothness in the power actuation of gate 10, with a minimum of time interval for such actuation. The motor 26 has automatic connections so that second throw of the controller 27 will cause the motor to operate to unwind and allow the gate 10 to travel'downward as the effective length of the line 21 from; the gate 10 to the. counterweight 8 is lengthened by the unwinding action of frame 29 from the position shown in Fig. l, past the position of Fig. 3 to the position of Fig. l. Accordingly in this return of gate 10, it has the slow-speed start, high rate of intermediate travel and slow down just before it reaches the floor 11 of car '5. Thus coming to rest on the'fioor 11, without concussion of impact, thereis minimum of wear and tear on the mechanism, and the members 14 at once actin automatically. locking the gate 10 closed. In the event of line 21 slacking while the gate 10 is hoisted from the floor llofcar 5, or there being any giving away of line'21','or 1' 7, or'shorte'ning of bight between the 'pul'leys19, members 14 are at once released for automatic action as safety de- "vices for gripping the guides 9 and thus holding the gate 10 from falling to the floor llof the car 5. V

The kinking of the line 21 by the gate operating device in the top of the well 1, occurs at a different portion of the line 21 for each'floor, thereby contributing to the greater length life for the line 21. By extending this line 21 to parallel car hoist line 6, there is automatically effected coincident "travel of the running line 21 with travel of the car 5, and the relatively stationary operating device in its effective length varying of the line 21 always at once moves the gate as to the car; J

The gate 10 centrally is provided with the vertically extending guide 34 for a block 35 having plunger 36 normally depressed against the lifting-action of spring 37 by contacting the transverse stop 38 of the gate 10. The block 35 is normally heldto have itsplunger 36 against the stop 38 by line 39 connected to the bar l0 on the car 5 and hava downwardly extending bight passing about pulley 41 carried by the block 35, and thence to bar 42' adjacent bar 38 and fast with the car gate 10. This line 39 is of a length to hold the block 35 as to the bar 38 so that the plunger 36 holds dog 43 pivotally mounted in the block 35 so that it is retracted or rocked inward into inactive positlon.

lihen the gate 10 is moved relatively to the car 5, the night in line 39 is lengthened below rail or bar 42 at half the travel rate of the gate 10. in initiating this travel at half the gate speed of the block 35 in gate 10, the spring 37 throws the dog 43 out into active position for engaging projection 44: fixed upon the upper part or section 45 of the well door. When in the inactive position, the dog 43 clears the projection id in the movement of the car 5 up and down in the well 1.

The upper Well door or gate section 45 is connected by lines as passing over pulleys 47 to the lower counterweighting or lighter gate section a iicrgordingly in the actuation engagement travel of dog 43, each gate section 45, 4:8, for the well, while moving at one half speed of the gate 10, is traveling synchronously therewith for simultaneously fully opening or fully closing the two gates or doors for a common way from the car 5 to a landing from the well 1.

Mountedto rotate with the gate machine or driving device frame 29 is the pulley 49 having the cable 50 extending to the counterweight 5l'for the gate machine for bal-1 ancing in a measure the car gate load thereon in operation. The well gates being disposed for one to carry the other, largely counterweight each other. The gate operation may be simultaneous on different sides of the car, by connecting line 52 in parallel with line 21.

that is claimed and it is desired to secure by Letters Patent is: a

1. A traveling gate, an operating line normally traveling with the gate, and a relatively non-traveling line embracing means normally free of the line and movable to kink the line in moving the gate.

2. An elevatorcar gate, an operating line for the gate extending from the car, and a relatively. non-traveling line embracing means normally free of the line and movable'to kink the line in moving the gate as to the car. 7

3. A lift gate, a vertically extending rigid guide for the gate, a third class lever piV- oted to swing on the gateand provided with jaws embracing the guide, a pulleycarried by the gate, and a gate actuating cable con nected to the lever between its pivotal portion and jaws and extending about the pulley to hold the'lever'in' fixed position against the jaws gripping the guide.

4. An elevator car, a lift gate therefor, a guide for the gate carried by the car,"amember pivotally mounted onthe gate and shiftable transversely of the guide for two point opposite coaction therewith, and actuating means for the gate connected to the member for releasing the gate.

5. An elevator car, a lift gate therefor, a pair of guides for the gate, members rockable transversely of the respective guides and normally locking the gate to the guides, connecting means between the members and hoisting means for the gate engaging the connecting means for automatically releasing the gate for hoisting travel. by simultaneously shifting the members.

6. An elevator car, a gate coacting with the car, and an oscillating member on the gate locking the gate to the car when the gate is sustained by the car independently of the position of the car as to the gate and actuating cable means flexibly connected to the member for releasing the member from lockingposition as the cable means takes the load of the gate off the car.

7. An elevator car, a gate coacting with the car, a pair of members locking the gate to the car when the gate is sustained by the car, a cable between the members having abight and actuating means for the gate engaging the bight to take the load of the gate off the car and automatically release the members from locked position.

8. An elevator car, a counterweight therefor, first connecting means between the car and counterweight, a gate for the car, see- 0nd connecting means extending from the gate to the car counterweight and gate actuating means coacting with the second connecting means.

9. An elevator car, a counterweight therefor, first connecting means between the car and count rweight, a gate for the car, and second connecting means extending from the gate to the car counterweight.

10. An elevator car, a gate for the car, a running line from the gate, and actuating means co-acting with the running line for effecting gate operation through said line independently of car travel.

11. An elevator car, a counterweight therefor, first cable means connecting the car to the counterweight, a gate for the car, second cable means connecting the gate to the counterweight, and gate actuating m ans to vary the effective length of the second cable means between the gate and counterweight for operating the gate.

12. An elevator car, a gate for the car, a counterweight for the car, means connecting the car, gate and counterweight, and actuating means for the gate acting on the connecting means for varying the distance between the gate and counter-weight.

13. An elevator car, a car gate, a running line from the car gate normally traveling.

with the car, and means coacting with the line for operating the gate independently of car travel.

1%. An'elevator car, a car gate, a running line connected to the gate, and means for varying the effective length of said line for for shifting the means to kink the line for moving the gate.

17 An elevator car, a well therefor, a lift gate for the car, a guide in the well as to which the car is movable, a hoist line ex;- tending from the gate about saidguide and connected to be actuated by car travel, and means movable relatively to the gate with which means the line may coact in gate hoisting travel independently of said car travel.

18. An elevator car, a lift gate therefor, a hoist line for the gate, normally inactive means mounted on the gate and controllable by the hoist line, and a well gate engageable by said means.

19. An elevator car, a car gate, a well for the car, said well having a landing, a well gate for the landing, means for actuating the car gate, a member carried by the car gate and controllable by the gate actuating means to engage the well gate.

, 20. An elevator car, a car gate, a well for the car, said well having a landing, a well gate for the landing, and gate operating mechanism including a member mounted on the car gate, an operating line for the car gate having a'speed reducing connection to.

double gate therefor, and means for operv ating the double gate at half the rate of the single gate operation. for effecting synchronous way clearance.

23. An elevator car, a car gate, a well for the car, said well having a landing, a two part gate for the landing, and mechanism 7 for actuating the gates simultaneously including means from the car gate coacting with a well gate in effecting relative movement between the car gate and one of the parts of the well. gate.

24. An elevator car, a lift gate therefor,

car carried guides for the gate, jaw members pivoted to the gate and embracing the guides, a hoist line for the gate for pulling the member from gripping the guide, and comprising a section between the members having an intermediate bight with which the line proper is connected, a pulley providing th bight connection of the line to the section, a counterweight for the car to which the line extends normally in a single uninterrupted bight operating as a running line during car travel, means normally free of the line coacting to vary the effective length of the line in effecting movement of the car gate as to the car, a well for the car, said well having a landing, a gate for the well landing comprising two sections oppositely movable vertically, and mechanism shiftable by travel of the car gate as to the car comprising a dog for engaging a well gate section, a block on which the dog is mounted, a guide in the car gate for the block, and a line between the ear and car gate forming bight for the block efiecting half travel rate for the block as to the ear gate, and connecting means between the well gate sections transmitting the dog actuation travel in one direction for one section as opposite travel for the other section.

25. An elevator car, a car gate, hoist means for the gate, a guide carried by the gate, a block movable in the guide, a line providing a bight about the block and con necting the gate and car, a dog automatically thrown on initial travel of (the block, and a well for the ear having a two-part door, simultaneous travel effecting connecting means between the two parts of the well door, one of said doors being provided with means to be engaged by the dog whereby opening of car door may also open the well door.

In testimony whereof I affix my signature.

ERNEST B. THURSTON.

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