US810404A - Retarding device for plunger-elevators. - Google Patents

Description

No. 810,404; PATBNTED JAN. 23, 1906. P. c. FURLOW. RETARDING DEVICE FOR PLUNGER ELEVATORS.

APPLICATION FILED OUT. 31. 1904.

ATTORNEY for Pluugcr-Elm'ators, of which the following I 30 designates a. three-way or reversing paratus which I use in carrying out my in.-

head 13 below its stalling-box by a pipe 33.

UNrran s'rATEs PA'rns r orrioa.

- FLOYD URLXHV, UF MONTULAIR, NEW' JERSEY, ASSIGNOR'TO ()TlS lLl1\/ \'l() l COR/IPA NY OF EAST ORANGE, NE'W JERSEY, A CORPO RATIUN OE- NlfiiV JERSEY. I

H ETARDING DEVICE FOR PLUN EiR-ELEVATQRS.

I Specificatio'nof'Letters Patent. Patented J an. 23. 190R u aatn filed October'Sl, 1904. Serial No. 230,767.

To ail whom it may concern: they afi'ord communication between it and Be it known that I, FLoYuC. FURLOW, a either the pipe 31 or the pipe 32. These citizen of the United States,residing at Montpipes 31 and 32 are connecte respectively,

clair, in the county of Essex and State of to asource of hydraulic power and to an ex New Jersey, have invented certain new and ,haustr A pilot-valve is situated near this useful Improvements in ltetarding Devices i three-way or reversing valve andis connected to the supply-pipe at 51 and tothe exhaust-pipe at 52. It is also connected to one end of the reversing-valve 30 at 53. The' valve-stem 5e of this valve is connected toan arn1 55, which is attached to the segment 24.. It is so arranged that when. the operator in the car moves the lever 20 to thelel't or to the is a specification.

My invention relates to retarding devices for plunger-elevators; and its object is to provide means for overcoming the momentum of such elevators.

.l ike characters of reference designate correspfmding parts in all of the figures, in j'right he thereby moves the valve-stem 54 of wh1chthe pilot-valve up or down. The'pilot-valve Figure 1 shows in side elevation a plungcr 'elevatorembodying my invention. Fig. 2 is" either direction to cause it to open or close its an enlarged plan view of the part of the apnected to the main-valve stem 34. ln-this vention. In this figure the plunger is shown in cross-section. Fig. 3 is a side view of one of the parts shown in Fig. 2. Fig. 4 is a side ')ly or exhaust to the hydraulic cylinder 12 he elevatLon of a coumerweight with a part of l the invention attached thereto. Fig. 5 is a view of certain parts in side elevation of a' modification oi" my invention. Fig. 6 shows another modification. j

Referring now to the drawings, 10 designates an elevator-car, which is attached to the top of a plunger 11.

i2 is a hydraulic cylinder, in which the plunger 11 runs through a cylinder-imam! and stullingbox 1.3.

A rope or cable. 14 is attached to the top of the car and runs up over a sheave 15, which is situated at the top of the elevator-hatch way. The rope or cable 14 passes over this. sheave and down to a counterweight 16. In the car 10 is placed an opcrating-lever 20, which is arranged to move tilting sheaves 21 21. Two operating-ropes22 22 are attached to fixtures 23 23 at the top'of the hatchwayand descend'to a point near the bottom of the hatchway, where they pass under a pivoted segment 24, wwhich they are attached. Between the supports at the top of the hatchway and the's egment 24 these...ropes 22 22 pass'around the tilting sheaves 2112.1.

connected car to move up or down and to stop. The above is well known in the art and illustrative of one type of construction to which the lnvention may be applied.

high speeds and high rises. \Vh'encver such an elevator 1s used'l'or alngh rise, it is found desirable to have the counterweight 1 (i of weight of the plunger 11, which increases the .dilliculty of stopping the movement accurately. Above the stulling-box and cylinder-head 13 I place a retarding device or brake 40. This retarding device or brake tier-head or any stationary fixture near the limit of the travel of the car 10. v This retard- 1t com rises two jaws, 41 and 42, which are .pivote( to a fixedpoint 43. These two jaws surround the plunger 11. The outer ends of the j'awsel 42 are arranged to cross each other, asshoyvn at 44 and 45. "The cam 46 is pivoted between these two projecting ends of the 'aws at 47. {times an attached arm or level 48' extending one side. This lever valve, which is connected to the cylinder- This valve is arranged to close the port lead ing to the pipe 33 or to open them, so that way the operator has complete control of the valve. 30, and as this valvecontrols' the supis arranged to actuate the main valve in ports by moving its pistons, which are conherelore is able to cause the plunger and its i needs no further description, but is merely It has been found dillicult in operating elevators of this type to bring them to rest within a short distance, especially when they are made for considerable Wieght to partially balance the may be supported bysome partof the c \'lintop of the cylinder 12 and'below the lower 1 ing device or brake is shown clearly in Fig. 2.

2.1111 a hydraulic elevator, the combination with a car and a plunger, of a retarding device for suchplunger, and means within the control of the operator on the car for applying and releasingsuch retarding device.

3..In a hydraulic elevator, the combination with a plunger and a car, of a retarding 7 device for the plunger, and means controlled from the car for starting and stopping said car and for applying and releasing said retarding device.

4.1In a hydraulic elevator, the combination with a plunger and a valve, of a retarding device for the plunger, said retarding devicfe being ac't uated by the movement of the i'r1g valve,,and connections from the said valve to the retarding device for actuating the same.

7 In a hydraulic elevator system, the-combination of a plunger, a car attached to the plunger, acounterweight attached to the car, a retarding device for the plunger, a retarding device on the counterweight, and a single -means for actuating said retarding devices from the car..

8. In a hydraulic elevator the combination of a plunger and a car, a retarding device for the plunger, and means situated upon the car for controlling the starting, stopping and reversing the movement of the'car and actuating the retarding device at the same time.

9; The combination with a car, of. a coun-.

terweight. and a plunger connected respectively to thetop and bottom of the car, a gripping-device for the plunger, means for controlling the movements of the car and plunger, and means for operating said grippin'g device and controlling means from the car.

.10. The combination with a car, of a conn- -terwe i 'ht, a plunger for said car, means for controIling the movement of ;the car and (plunger, a brake for said plunger, anda sin gle means for operating said controlling means, ,a'nd'a leverfor actuating said operatingtmeansm, 1 v v 11.- Thecombination with a car, ofa counterweight,; a-plunger connected to the car,

6 means for controllin the movement of said ear and plunger. a. rake for said counterweighnjnd T-mearisfor operating said brake and-controlling means from the car.

-. J 12.;In an, elevator, the combination with a fcarefid m8811l3i0I"mQWl!lgSam8, of a counterweight, a retarding device for the counterweight, and means for, positively actuating said retarding device. i

13. In an elevator, the combination with a car and means for moving same, of'ac0unte1'' weight, a retarding device for the counter-- vweight, and means controlled from the car for applying and releasing-such retarding device.

14. In an elevator, the con'ibination with a car, of a counterweight theretor, a retarding device for such counterweight, and means within the control of the operator on the car for applying and releasing such retarding device.

car and its counterweight, of a retarding de vice for the counterweight, and means con 15. In-anelevator, the combination with a trolled from the car for starting and stopping.

said car and for applying retarding device.

16. In a hydraulic elevator, the combination with a car and a plunger, ol" a counterweight, valve mechanism for controlling the and releasing said movement of said car and plunger, a brake for the counterweight, connections for operating'said valve mechanism and said bra -e, and a single means ior actuating sa1d'connec-:

tions from the-car.

f 17. In a hydraulic elevator, the combination with a car and a plunger, of a 'counter-. Weight, a brake for said counterweight, and means actuated from the car for controlling the starting, stopping and reversing of the movement of the car and plunger and actuating said brake substantially at the same time.

18. In an elevator, the combination with a car and a counterweight connected thereto, of guides for said counterweight, brake-shoes, a toggle connected to the brake-shoes, a resilient means for normally holding said brakeshoes away from the guides, and means actuated from the car for operating said toggle against the action of said resilient means to apply said brake-shoes to stop the car and counterweight. I

19. In an elevator, the combination with a car and its counterweight, of a brake for the counterweight, brakeapplying means, a spring for normally holding said brake and brake-applying means in releasing position, a flexible connection between'the brake-applying means and the car, a devi'ce on the car for- -20. In a hydraulicelevator, the combina.-.

'tion.vvith a plunger and a 'car, of a grip ling device for said plunger, andmeans for releas ing and controlling the application of said gripping device from the ear.

' 21; In a hydraulic elevator, the combination with a plunger and a car, of a brake for me a-see "38. In a hydraulic elevator, the combine- .tic'm with & our and a plunger attached there to, of eeunterweight connected. to the car, a cylinder fmithe plunger, 3 main-valve for 0011 trolling said plunger, 21- pilotvaive for com trolling said main valve, brakes for the cone-- terweight and plunger, individuei means for applying the same, and means controlled from the em to efifeet the starting or'stopping of the ear and the release or application sald brakes.

In wltness whereof I have subscribed 1V name in the presence of two subscribing" 9%-

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