US252966A - Hydraulic elevator - Google Patents
Hydraulic elevator Download PDFInfo
- Publication number
- US252966A US252966A US252966DA US252966A US 252966 A US252966 A US 252966A US 252966D A US252966D A US 252966DA US 252966 A US252966 A US 252966A
- Authority
- US
- United States
- Prior art keywords
- ram
- cage
- hydraulic elevator
- cylinder
- counter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002965 rope Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000001174 ascending Effects 0.000 description 4
- 230000000284 resting Effects 0.000 description 4
- SXYIRMFQILZOAM-HVNFFKDJSA-N (3R,5aS,6R,8aS,9R,10S,12R,12aR)-10-methoxy-3,6,9-trimethyldecahydro-3,12-epoxypyrano[4,3-j][1,2]benzodioxepines Chemical compound C1C[C@H]2[C@H](C)CC[C@H]3[C@@H](C)[C@@H](OC)O[C@H]4[C@]32OO[C@@]1(C)O4 SXYIRMFQILZOAM-HVNFFKDJSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
Definitions
- the object of this invention is to reduce the cost and increase the efficiency, safety, and durability of the hoist.
- A is a well that contains the hydraulic cylinder and blow-off pipe. It is usually bored and lined with tubing, like an Artesian well.
- O is a blow-off pipe for discharging-any sediment that may collect at the bottom ofthe cylinder B. It is provided with avalve,c, for thepurpose hereinafter specified.
- D is aguide, through which the ram slides freely until the slack of the lines F F is taken up, after which it rises and falls with the ram. Its office is to prevent springing of a long slender rain, and it may be applied to a horizontal as well as perpendicular ram.
- E E are rollers on the ends of the guide I) to keep it in position and reduce friction as it rises and falls with the ram.
- F F are ropes, one'end of each of which is fastened to the bottom of the cage or to the head of the ram, the other end being attached to the guide D.
- G is a cage for passengers or freight. securely fastened to the head of the rain.
- H H are guide-posts for keeping the cage in line with the axis of the ram.
- I is a cross-bar or the root of the cage.
- J J are wire ropes, the upper ends of which are secured to the drum Kand the lower ends to the cross-bar or roof I.
- K is a drum, upon which the lines J J are wound by the action of the counter-weight N as the ram ascends.
- L is a fusee, to which the line H is attached, and upon which it winds as the ram descends.
- This fusee may be detachable, so that a larger or smaller one may be substituted should it be desirable to vary the size or powerof the counter-balance N.
- the office of this fusee is, in connection with the weight N, to provide an automatically variable or graduated counterbalance to the cage and ram by increasing or diminishing the leverage and power of said weight as it rises and falls with the winding and unwinding of the line M.
- Other devices for securing an automatically variable or graduated counter-balance may be substituted, and therefore I do not confine myself to this form of construction, though it is probably as simple and efficientas any thatcan beapplied.
- the size and proportions of the fusee should be such as exactlytocompensateforthelossortheincrease of buoyancy of the rain caused byits emersion or immersion as it rises and falls in the water contained in the cylinder B, so that any pressure or any weight capable of starting the ram will carry it to the end of its stroke, notwithstanding this loss or this increase of buoyancy.
- M is a line, by which the counter-weight is suspended, its upper end being firmly secured to the larger end of the fusee.
- N is a partial counter-balance to the ram and cage, but leaving them sufficiently unbalanced to let the empty cage descend freely when water is allowed to escape from the cylinder B.
- the weight N may be placed wherever desired.
- 0 is the supply and discharge pipe for water, by which the hoist is worked. It is provided with the usual valves and levers or ropes.
- An auto natically-varying or self-compensating counterpoise in combination with a hydraulic elevator having a platform or cage resting upon, secured to, and operated by a vertical ram.
- a hydraulic elevator having a platform or cage resting 'uprin, secured t-o,and operated by I G. L. P] ERGE.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Description
(No Model.)
G. L. PIERCE.
, HYDRAULIC ELEVATOR.
No. 252,966. Patented Jan. 31,1882.
E j E In F r F X) o T 0:3: t I t I l t I l 5 i Wztnesses: g l
i 5 Inventor. f M- 1% UNITED STATES PATENT OFFICE.
cnon'en L. PIERCE, or OAKLAND, CALIFORNIA.
HYDRAULIC ELEVATOR.
SPECIFICATION forming part of Letters Patent No. 252,966, dated d'anuary 31, 1882.
Application filed September 6, 1881.
To all whom it may concern:
Be it known that I, GEORGE L. PIERCE, of the city of Oakland, in the countyof Alameda and State of California, have invented certain Improvements in Hydraulic Elevators,of which this, with the accompanying drawing, isaspecification.
The object of this invention is to reduce the cost and increase the efficiency, safety, and durability of the hoist.
It consists in the combination, with a 11ydraulic-ram hoist, first, of an automaticallygraduated counterbalance; second,of a device for blowing out sediment deposited at the bottom of the hydraulic cylinder; third,ofa guide to prevent springing of the ram.
Referring to the drawing, A is a well that contains the hydraulic cylinder and blow-off pipe. It is usually bored and lined with tubing, like an Artesian well.
Bisahydrauliccylindercontainingtheram B.
O is a blow-off pipe for discharging-any sediment that may collect at the bottom ofthe cylinder B. It is provided with avalve,c, for thepurpose hereinafter specified.
D is aguide, through which the ram slides freely until the slack of the lines F F is taken up, after which it rises and falls with the ram. Its office is to prevent springing of a long slender rain, and it may be applied to a horizontal as well as perpendicular ram.
E E are rollers on the ends of the guide I) to keep it in position and reduce friction as it rises and falls with the ram.
F F are ropes, one'end of each of which is fastened to the bottom of the cage or to the head of the ram, the other end being attached to the guide D.
G is a cage for passengers or freight. securely fastened to the head of the rain.
H H are guide-posts for keeping the cage in line with the axis of the ram.
I is a cross-bar or the root of the cage.
J J are wire ropes, the upper ends of which are secured to the drum Kand the lower ends to the cross-bar or roof I.
K is a drum, upon which the lines J J are wound by the action of the counter-weight N as the ram ascends.
L is a fusee, to which the line H is attached, and upon which it winds as the ram descends.
It is (No model.)
This fusee may be detachable, so that a larger or smaller one may be substituted should it be desirable to vary the size or powerof the counter-balance N. The office of this fusee is, in connection with the weight N, to provide an automatically variable or graduated counterbalance to the cage and ram by increasing or diminishing the leverage and power of said weight as it rises and falls with the winding and unwinding of the line M. Other devices for securing an automatically variable or graduated counter-balance may be substituted, and therefore I do not confine myself to this form of construction, though it is probably as simple and efficientas any thatcan beapplied. The size and proportions of the fusee should be such as exactlytocompensateforthelossortheincrease of buoyancy of the rain caused byits emersion or immersion as it rises and falls in the water contained in the cylinder B, so that any pressure or any weight capable of starting the ram will carry it to the end of its stroke, notwithstanding this loss or this increase of buoyancy.
M is a line, by which the counter-weight is suspended, its upper end being firmly secured to the larger end of the fusee. Y
N is a partial counter-balance to the ram and cage, but leaving them sufficiently unbalanced to let the empty cage descend freely when water is allowed to escape from the cylinder B. By carrying the line M over a pulley the weight N may be placed wherever desired.
0 is the supply and discharge pipe for water, by which the hoist is worked. It is provided with the usual valves and levers or ropes.
The operation of this apparatusis as follows:
Water being admitted under suitable pressure I to the cylinder B through the pipe 0, the ram rises, carrying the cage Gr, taking up the slack of the ropes F F, and then raising the guide D,which, beingneedcd only on thelong strokes, is permitted by the slack of these ropes to remain at restduring all short strokes ofthe ram. As the ram ascends, the lines J J are wound upon the drum K by means of the descending counter-weightN, hangingfroin the constantlyincreasing radius of the fusee, whereby the power ofthe counter-weight is made to increase in exact ratio with the loss of buoyancy of the' ascending ram. When water is allowed to escape from the cylinder B the converse follows,
the ascending counterweightlmnging from a radius decreasing in exact ratio with the increasing buoyancy of the descending ram. When sediment collects at the bottom of cylinder B it is blown out through the pipe 0 by opening the valve 0, instead of the usual valve when lowering the ram.
Having thus illustrated and described my invention, what I deem new, and claim as my invention, is
1. An auto natically-varying or self-compensating counterpoise, in combination with a hydraulic elevator having a platform or cage resting upon, secured to, and operated by a vertical ram.
2. A hydraulic elevator having a platform or cage resting 'uprin, secured t-o,and operated by I G. L. P] ERGE.
Witnesses:
A. B. Bownns, GEO. TREssLEn.
Publications (1)
Publication Number | Publication Date |
---|---|
US252966A true US252966A (en) | 1882-01-31 |
Family
ID=2322264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US252966D Expired - Lifetime US252966A (en) | Hydraulic elevator |
Country Status (1)
Country | Link |
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US (1) | US252966A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232377A (en) * | 1963-06-17 | 1966-02-01 | Baker Roos Inc | Adjustable scaffold |
US4062640A (en) * | 1976-09-24 | 1977-12-13 | Bethlehem Steel Corporation | Method and means for controlling long stroke pumping units |
-
0
- US US252966D patent/US252966A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232377A (en) * | 1963-06-17 | 1966-02-01 | Baker Roos Inc | Adjustable scaffold |
US4062640A (en) * | 1976-09-24 | 1977-12-13 | Bethlehem Steel Corporation | Method and means for controlling long stroke pumping units |
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