US623901A - Elevator - Google Patents

Description

No. 623,91. Patented Apr. 25, I899. J. HADFIELD.

ELEVATUR.

(Application filed Dec. 15, 1898.)

2 Sheets-Sheet I.

(No Model.)

INVENTOR fisepfi Hadfi'elcl BY ATTORNEYS No. 623,901. Patented Apr. 25, I899. J. HADFIELD.

ELEVATOR.

' (Application filed Dec. 15, 1898.) (No Model.) 2 Sheets-Sheet 2.

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JOSEPH IIADFIELD, OF NEWV YORK, N. Y., ASSIGNOR TO AUGUST M. FAY AND LOGAN R. FAY, OF EAST ORANGE, NEIV JERSEY.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 623,901, dated April 25, 1899.

Application filed December 15, 1898. $erial No. 699.379. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH I'IADFIELD, a citizen of the United States, residing at New York, (Brooklyn,) in the county of Kings and State of New York, have invented new and useful Improvements in Elevators, of which the following is a specification.

This invention relates to improvements in elevators, and resides in the novel features of construction set forth in the following specification and claims and illustrated in the annexed drawings, in which Figure 1 shows the elevator sectioned along 11 1), Fig. 3. Fig. 2 is a section along to w, Fig. 3. Fig. 3 is a plan view ofthe elevator sectioned along x m, Fig. 1. Fig. 4 is a section along y y, Fig. 1. Fig. 5 shows a sectional view of a valve set for the rise of the car. Fig. 6 shows the valve reversed or set for the descent of the car.

In the drawings is shown a car or cage 1 of an elevator. Connected or secured to the top or roof of the car are bands or connections 21, and bands 22 are connected to the car at its bottom or floor. These bands 21 and 22 are connected to pistons 23 in cylinders or tubes 24. Four such tubes are shown, Figs. 3 and 4; but of course this number can be varied. One tube 24, with its piston 23 and connections 22 and 21, can be made to answer; but a plurality of tubes and pistons may be desired for obvious reasons. In running from the piston to the car the connections 21 and 22 are guided or led about pulleys 25 and 26 in casings or housings 27 and 28.

A pressure-supply tube 29, Fig. 2, connects with an air-pump or pressure-supply, (not shown,) and a valve-casing 30, with asuitable reversing-valve, can cause the pressure from supply 29 to pass either through passage 31, Fig. 6, into lower case 28 or through the conduit or stand-pipe 32 into the upper housing 27, Fig. 5. This valve has also suitable exhausts, so that when pressure is supplied to pipe 32 the-passage 31 exhausts or is in communication with the outer air, as seen in Fig. 5. When pressure is supplied to channel 31, Fig. 6, the pipe 32 exhausts.

The oppositely-located housings 27 and 28 communicate with the pressure-pipes 24, and when pressure is supplied to the upper housing 27, so as to force down the actuating or lifting piston 23, the connections 21 draw the car up. Relieving the downward pressure on the piston or causing pressure to be supplied to the lowerhousing 28 will effect a rise of piston 23 or a lowering of the car.

The housings 27 and 28, as indicated in Fig. 3, are arranged to suitably house the pulleys 25 and 26, and the connections 21 and 22 can be made to pass through suitable stufling-boxes 33 to prevent escape or loss of pressure from the housings 27 and 28 and pipes or cylinders 24.

The double-acting connections 21 and 22 at the top and bottom of cage 1,with their common piston 23,will cause the cage to respond to the movements of piston 23, or, in other words, the piston becomes double-acting, so that such piston moving in either direction will cause the car to travel. The flat or steel bands or tapes which are shown forming the connections 21 and 22 have been found preferable to ropes or cables, as such bands combine great strength with ready flexibility. The flat smooth bands 21 and 22 also allow the stuffing-boxes to be suitably applied and tightened. Each pulley 25 or 26 may have a single band 21 or 22 traveling thereabout, each band being of suitable strength, or several bands or thicknesses or layers may be led over each pulley.

WVhen the reversing-valve is in intermediate position, so that the pressure-supply 29' is cut off from both pipes 31 and 32, the car 1 is stopped or at rest. A safety tube or cylinder 34 can also be supplied, provided with a suitable counterweight 35, Fig. 2, which when made to fit tube 34 will act as a piston. The top of tube 34 being closed, a fall of car 1 is not only counteracted by the weight of piston 35, but by the air compressed above the piston on the rise of the latter. The counterweight 35 has a band or connection 36 with the car. The safety-tube 34 can be provided with an escape or regulating cook 37, Fig. 3, to allow the gradual escape of air confined in the tube 34 by the compressor 35.

The plug of valve 30 has an arm 50, Fig. 2, linked or connected at 38 with a branch 39 of the starting and stopping rope 39, 40,41, and 42, the branch 40 running through the car or within reach of the conductor and the knots or stops 43 being arranged for automatic stopping or reversing by the car 1 to prevent accidents, as known. The plug of valve 30 has the ports 44 and 45, Fig. 5, of which port 44 serves for admitting pressure to stand-pipe 32 for the rise of the car. Port 45 admits pressure to housing 28 for the descent of the car,while exhaust 46 communicates with pipe 32. Vhen port 44 is in action, the passage 31 opens through exhaust 47, as seen in Fig. 5. The housing 27 is shown with an opening having a closure or stopper 48, which can be removed for oiling or other purposes.

The car 1 is shown running along guides or rails 2, Fig. 3, which can be engaged by jaws 3, spread by wedges 4, Fig. 1, as stated in United States Patent No. 613,628, granted November 1, 1898, for clutch or brake mechanism. 7 and cylinder 8, the pressure entering from conduit 11 into the cylinder causing the piston to recede or move the wedge 4 out of action. On the pressure being taken off, the springs 10 will move the wedges 4 to cause the safety grip or jaws 3 to grip the tracks 2. Four cylinders 7 are showntwo on the carroof and two under the carand afan or antomatic actuator 17 can be applied, or the pressure to the cylinders 8, through conduit 11 from the tube 15, can be cut off bya valve 49 in reach of the conductor in the car. The counterweight 35, inclosed in safety-tube 34, is prevented by the latter from striking car 1 in case of detachment or breakage.

By keeping a supply of oil or lubricant in cases or housings 27 and 28 easy running is assured. If desired, the casing 28 can have an access-opening, as in the case of housing 27, closed at 48.

Vhat I claim as new, and desire to by Letters Patent, is

1. An elevator comprising a cage or car, a piston connected to the top and bottom of the car, and a cylinder for the piston and made to receive pressure at both extremities to drive the piston in both directions substantially as described. v

2. Acage orcar, adouble-actingconnection between the top and bottom of the car, and

Each wedge 4 is shown with a piston.

an actuating-piston made double acting or common to the oppositely-located connections substantially as described.

The combination of a cage or car, a

double'acting connection between the top and bottom of the cage or car, a double-acting piston, a cylinder for said piston, and a reversin g-valve connected with opposite portions of the cylinder, substantially as described.

4. A cage or car, a series of double-acting connections at opposite ends of the car for actuating the latter, wheels or pulleys for said connections above and below the car, housings for the pulleys, and pressu re-tubes made to communicate with said housings, said tubes having pistons to which said connections are secured substantially as described.

5. A cage or car, a series of cylinders with double-acting pistons, connections between the pistons and car, wheels or pulleys for the connections, and closed or air-tight cases or housings for the wheels placed at and made to communicate with opposite portions of the cylinder substantially as described.

6. An elevator comprising a cage or car, a cylinder having a double-acting actuatingpiston, and flat bands made to connect the piston with the top and bottom of the car substantially as described.

7. An elevator comprising a cage or car, a cylinder having air-tight pulley-housings at its opposite ends, pulleys in the housings, a double-acting piston in the cylinder and fiat bands made to connect the piston with the top and bottom of the ear, said housings having stuffing-boxes for the fiat bands substantially as described.

S. An elevator-car combined with an actu-

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