US844488A - Hydraulic elevator. - Google Patents

Description

No. 844,488. PATENTED FEB. 19, 1907.

W. L. WEBER. HYDRAULIC ELEVATOR,

APPLICATION FILED OCT. 5, 1906.

WTA/ESSES WVEN TUB l V/AA/AM L. W550? 75W UNITED STATES PATENT OFFICE.

WILLIAM L. WEBER, OF BOSTON, MASSACHUSETTS, ASSIGN OR TO GREENE, 'TWEED AND COMPANY, OF. NEW YORK, N. Y., A CORPORATION OF NEW YORK.

' HYDRAULIC ELEVATOR.-

Patented Feb. 19, 1907.

Application filed October 5,1906. Serial No. 837,598.

"T all whom it may concern.-

Be it known that I, .WILLIAM L'. WEBER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Hydraulic Elevators, of which the following is a specification. This invention relates to hydraulic elevators.

In particular, it' relates to that t e of elevatol in which the car is support upon a long piston or plunger which travels in a cylinder sunk in the earth, the plun er being forced upward and out of the cy inder to carry the car to an desired height by forcing water into the cy inder and the car being lowered to any desired level by allowing water to flow through the outlet from the cylinder until the plunger sinks to the desired level. In elevators of this type the water is forced in under considerable pressure, and the packing for the plunger at the mouth of the cylinder is correspondingly tight, and difficulty is experienced in keeping the plunger suitably lubricated for its passage through the packing.-

' posit of oil on the plu The common method hitherto has been to cause oil to be smeared over the exterior of the plunger by aworkman by hand or with the aid of an oil-can and when this has been rubbed away by the packing or carried ofl by the water to repeat the operation. Another method recently devised has provided a reservoir for oil surrounding the plunger, from which the oil is spread upon the surface of the plunger by direct contact therewith, the plunger passing in and out through a bath of oil thus arranged ,or through a reservoir filled with absorbent material holding oil, the absorbent oil-carrying material hearing directly against the plunger. Both of these methods provide for the constant deer-surface, and I have found in experience t at no method known to me prior to the present invention has'been effective -to deliver the oil economically and without waste to various it is sufficient if there parts of. the plunger surface. For example, be occasionally'a deposit of a little'at the bottom, a little at the top, and other small deposits at various isolated points between, whence it is spread gradually by contact with the packing.

- The present invention aims to facilitate type described by providing means for making occasional deposits of a small body of oil at varying places upon the surface throughpreferably located inthe gland-hea of the cylinder-packing, just above said packing;

and the invention also comprisesmeans to so govern the discharges that although depos- 1ted upon the plun er outside of the cylindercept upon a portion of the plunger which'is certain to pass through the thus assure the use and distri ution-of the oil so deposited, thus guarding againstmaking deposits uneconomically in a location where they could not be utilized conveniently, if at all. Y

tion and arrangement hereinafter given.

The accom anying drawings show one embodiment o the invention. V In the drawings, Figure 1 represents a side arrangement and application of the invention artly in diagram. Fig. 2 represents a detailin section, much enlarged.

Referring to the drawings, 1 represents a cylinder set in the earth 2 opening 3, through which water ma enter or be expelled. A plunger passes t ough a packing 5 at the top of the cylinder and carries at its top a car 6, which may be guided in ways, as is customary, which are not represented in the drawings, as the are not necessary to a roper understanding of the invention. T e movement of the elevator is controlled in an here represents being a shipper-rope 7, which passes u through the car, where it may be graspe b the operator, and passes down to. the va for controllin theflow of water through the opening 3. day sort of mechanism for this the economical operation of elevators of the suitable way, the means out the length of the plunger, and to this end point .of discharge. This discharge oint is pacln'ng no deposit shall be thus made exacking, and

Other features of the invention will be un derstood from the description of construC- elevation .ofa plunger-elevator, showing the and having an ve-operating mechanism purpose may be used, and this also forms no mounted on an arm 24, pivoted on shaft 21,

I the invi n the asking 5, the pipe in the inner end of said hole, containing a repp y-pipe 9 thus serving as a pinion w pin attached by the clamp 28 to the shipper- .responding to the inactive movement of thepart of the resent invention and is not shown in the drawings. An oil-pipe 9 is provided to conduct a supply of oilto a point which is most conveniently located above terminating in a holedri ed through the gland- 10, which holds the packing in place. A plug 11 is inserted cess 12, in which is a ball 13 and a spring 14, which normally presses the ball against the end of the passage communicating with the valve to maintain-the discharge from said pipe closed except when overcome by pressure of cil within the pipe. When the pressure of the spring is thus overcome, oii escapes from the pipe, passes through the recess and a hole 8 in the plug,and is delivered therefrom upon the adjacent surface of the plunger 4. A reservoir 15, containing a suitable supply of oil, is provided at a convenient nearby location and is connected witha small pump comprising a cylinder 16, in which a piston reciprocates, the cylinder having an inletvalve 18 from the reservcir and a discharge 19, communicating with the pipe 9. The piston is caused ,to reciprocate by its connection with an eccentric 20 on a shaft 21, which also carries a toothed pinion 22. A pawl 23,

has a reciprocating motion in position to engage the teeth of the pinion and to rotate the pinion when moving in one dil ectiOn, but to slip freely over the teeth and not rotate the en the pawl is moving in the opposite direction. pawl-carrying arm 24 projects radially a convenient distance and connects, by means of a rod 25, with one arm 26 of a bell-crank, the other arm of which, 27, is connected with the shipper-rope 7. The last-named connection consists of a rope and riding in a slot in the arm 27;

As the shipper-rope and the clamp thereon have a vertical travel as hererepresented, the pivct of the bell-crank will be horizontal, giving the point of attachment between the. arm 26-and the radial and 24 a horizontal movement to the right or to the left, as represented in the drawings, movement to the' right correspondingstq thegactive movement of the pawl in engagementf vvith the ratchet on the pinion and movement to the left corpawl and corresponding'also to the downward movement of the shipper-rope, which in common practice is the movement for starting the car upward or for stopping the car after a downward movement thereof. This arrangement constitutes. one feature of tion, the purpose and effect of which is to cause all deposits of oil on the .motion.

of the would be plunger-surface to be made at points where the same will-be efiiciently utilized for relieving friction between the plunger and its packing 5. a

In operatien each time the shipper-rope is pulled downward the pawl i's'retracted to the left, and each time the shipuer-rope is pulled upward the pawl is pushed forward to the right, thus actively rotating the toothed pinion to an extent corresponding to the This rotation of the pinion rotates extent the shaft 21 and to a correspondin i the attached piston inits.

advances action 0 cylinder to a corresponding extent. Dur ng a portion of the time while the piston is being raised it is drawin oil into its cylinder through the inlet-valve, but during the remaining-portion of its motion it is forcing oil out from the cylinder, and owing to the automatic closing of the inlet-valve this oil I is forced throu h outlet 19 into pipe 9, and if that pipe be fulh'as it is in practice, a correspondin amount is forced out at the delivery en of said pipe past the valve therelocated and is deposited upon Whatever part of the surface of the plunger happens at that moment to be opposite the point of delivery. The deposit is thus made at varying points of location between the extreme limits of travel of the plunger-as, for example, if the shi per-rope be moved to stop the car atthe floor of a building or at the sixth floor the de' osit will be made upon a different part 0 the plunger'from that if the shipperrope be moved to stop the car at the second or the eighth floor-and it will be observed that this'deposit is independent of the travel of the plun er, or non-synchronous therewith, depen ing wholly upon the movement shipper-rope or v employe for stopping or starting the car. As there is in practice always certain position which'isthe lowest osition of the car, there is a certain depth w ich is the limit to which theplungerenters' its cylinder, and as the delivery-' emt of oil shown in the drawings is-outsi e the cylinder-packing it is evident that any oil deposited when'the car is in its lowest position, asby movement of the shipper-r0 e to stop the car in said position, deposited outside the packing and would not be conve ed'by the plunger to the packing a 'woul thus never serve to lubricate th passageof the plun er through the pac B the feature 0 the invention pre "ously escribed' this uneconomical deposit of oilis avoided-namely, by arrang' ing the inactive movement of t e pawl synchronously with the motion of the shipperrope for stopping downward motion of the car, which is in the samedirection as the mo tion for starting upward motion of the car.

The arm 27 of the bell-crank-is preferably made adjustable in length, one portion other, as-ind'icated at 13-0,

and the other arm point, in which the pivot-pin for its connec- IOO other equivalent means tion to the rod may be clamped but it will be obvious that man variations in detail may be made within the scope of the invention, including the substitution of some other form of oilump from that here shown or the connection of the pump to some other part of the control mechanism for starting or stopping the elevator-car. The maintenance of the pipe 9 with a spring-closed delive nozzle permits a limite quantity of oil to e delivered directly on the surface where it is needed at various parts of the long elevatorplunger, thus giving all'parts occasional fresh ubrication, but without spreading oil thickly over all parts or continuously applying same and without the labor of administermg this occasional deposit by hand. The amount deposited may be regulated by regulating the.

travel of the pawl per stroke or by the use of any other suitable mechanical device, a number of which are known in the art.

I claim 1. A hydraulic elevator, comprising acylinder, a plunger, and a pac between them, incombmation with contro means to start and stop the plunger, and an oil-reservoir having a dischar e upon the surface of the plunger controller? and operated by said plunger-control means.

2. A hydraulic elevator, com a cylinder, a plun er, and a pac between them, in combination with control mechan ism moving in one direction to start the plun- -thereby an oll-pum ger upward and'in the opposite direction to start 1t downward, and an oil-reservoir havinga discharge for lubricating the parts conments to start the car upward.

3. A hydraulic elevator, comprising a cylinder, a plunger, and a pac between them, in combination with contro means to start and stop the plunger, an oil-reservoir, a pump connected therewith, and connections om the 'pump to said plunger-controlling means, whereby movement of the latter operates the pump, there being a discharge therefrom upon the surface of the plunger.

4. A hydraulic elevator, comprising a cylinder, a pl er, and a packing between them, in cdiiiiination with a shipper-rope and mechanism for controlling motion of the plungelzr; a pawl-carrying lever actuated by the s 'pper-rope; said pawl; a pinion engaged actuated by the pinion, there being a scharge from the oilpump u on the plunger-surface outside of said pac a In testimony whereof I have afiixed my signature in presence of two Witnesses.

WILLIAM L. WEBER.

Witnesses: M. E. MURPHY,

EVERETT E. KENT.

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