US979519A - Ash-hoist. - Google Patents

Description

D. LARSON.

ASH HOIST.

APPLIOATION FILED SEPT. 4, 1907;

Patented Dec.27, 1910.

UNITED STATES PATENT OFFICE.

DAVID LARSON, OF YONKERS, NEW YORK, ASSIGNOB TO OTIS ELEVATOR COMPANY, OF

JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY. I

979,519. Specification of Letters Patent. I Patented Dec,- 27, 1910, Application filed September 4, 1907. Serial No. 391,393.

To all whom it may concem: the inner surface of the flange 6, and to- Be it known that I, DAVID LARSON, a subg'ether with the body of the bracket securely 'ect of the King of Sweden, residing at hold the frame 7 in sliding contact with the onkers, in the county of Westchester and guide rail 6. v State of New York, have invented a new Provision-is made for liftin and lower- I and useful Improvement in Ash-Hoists, of mg the frame 7 as follows. olted to one which the following is a specification. side of the beam 1 is a plate orbracket 12 .My invention relates toan improved form which, as shown in Fig. 4, is parallel with of hoisting device or elevator 01 the type the beam and spaced therefrom a short dis- 10 known as sidewalk elevators, and is espetanee. A spindle or shaft 13 is journaled cially adapted for hoisting ashes or other at One end in the plate 12 and extends articles from a cellar or basement beneath a through the beam 1 and has its opposite sidewalk up through an opening in the end journaled in a bearing plate 14 secured walk. to the beam opposite the upper end of the 15 one ofthe objects. of the invention is to plate 12. The shaft 13 carriesa winding provide a device of this character which is drum 15 and a gear wheel 16. Above the simple in construction and in which allthe shafts 13 1s a crank shaft 17 also journaled parts may be assembled'before it leaves the n the bearing plates 12 and 14. The shaft shops, and which may be easily and quickly 17 has keyed thereto a pinion 18 meshing 20 installed and without the employment of with'the gear wheel 16, and a hand crank 19.

skilled labor. v A hoisting rope 20, secured at one end to Other objects appear hereinafter, the I the bracket 9, extends over a sheave 21 carnovel combinations of elements being set -r1ed by a bracket secured to the up er end forth in the appended claims. of the beam 1, and the opposite end of the 25 Referring to the drawings, Figure 1 is rope is attached to the winding drum 15. an elevation showing the device installed en the hoistin device is not'in use, the and the parts in a position assumed while frame 7 is allowe to remain below the surit is in use;'Fig. 2 is a-similar view from the face of the Walk, but it can be lifted into opp sit sid with th tio b v the position for use by'turning the crank 19 and 30 sidewalk broken away; Fig. 3 is a frgmenwinding the rope'20' on the drum 15 thus tary view of the counterweight and chain; lifting the frame to the position shown. Fig. 4 is a view taken at right angles to Theframe 7 is locked in a raised position by Fig. 2; Fi 5 is a diagrammatic view of the an arm 21 (Fig. 2) engagingbeneath a cam motor an controller; and Fig. 6 is a seclug or catch 22on the bracket 9. The, arm

35 tional. view of the guide rails and parts in or latch 21 forms one member of a bell crank sliding engagement therewith. lever pivoted at 23 to the beam 1. The arm The hoisting device is shown as installed 21 is normally held in the path of travel of beneath a sidewalk A in position for liftthe'cam 22 by a coil. spring 24 attached to mg ashes, or for liftin or lowering other the opposite end of the lever.. A cord or rod 40 'material through a man ole or opening B in 25 is attached to the bell crank lever and exthe walk. The framework comprises an tends downwardly. to within convenient I-beam 1 having its lower end embedded in reachof the operator, and is provided at; its the floor 2 of the cellar or basement, and its lower end with a handle-26. When it is de-,. upper end securedin any suitable way'to sired tolower the frame 7 the handle 26 is 5 the beam3- or other framework supporting pulled downwardly, which releases the arm the sidewalk. The flanges 5 and 6 of the 21 from thelug or catch 22 and permits the I-beam 1 form guide rails'respectively for frame to-descend by its own wei ht, the the counterweight-'W and a vertically movspeed of descent being controlled i desired able frame 7. The frame 7 comprises'atuby the crank'19. When the'frame 7 is lifted 0} bular body portion 8, a lower guide-bracket the cam. 22 swings the 'latch arm 21 out- 9. and an upper bracket 10. The' guide 'wardly, and as soon as the cam has passed bracket-9 is recessed as shown in Fig. 6 to the sprin1g24 returns the latch to osition receive the flange or guide rail 6 of the beneatht e-catch '22 and holds the rame 7 I-bearn Bolted-to the lnn'eisurface of the; -in its lifted v position. 1 The ash can 27- or bracket 9 are guide 'strips 11 which engage other receptaclev or article to be lifted 01:21-10 lowered is attached by a book 28 to the end of the hoisting chain 29. This chain passes over pulleys 30, 31, journaled in the bracket -10,.down through the tube 8 to a drive where it is attached. I

Any suitable means may be provided for operating the drive sheave 32, and in this instance I have shown an ordinary series wound direct current motor M. This motor is carried by a bracket 35 bolted to the lower end of the beam 1, and is operativelyconnected to the drive sheave 32 through reduction gearing comprising apinion 36 on the" motor shaft, a gear wheel 37. keyed to a. shaft 38 and meshing with the-pinion 36, a

pinion 39 also keyed to the shaft 38 and meshing with a gear wheel "46- secured to the shaft 41 of the drive sheave 32.v I The shaft 38 extends through the plate 12 and'carries on the outside of said plate'a brake pulley 42. On opposite sides of the pulley 42 are brake levers 43 pivoted at their lower ends to the plate 12. A'horizontal rod'44 passes throughthe brake levers and is provided with washers near itsvends, between which and the levers are coil sprin s' 45 surround ing the rod 44 and normaly-holding the brakes applied.

The controller. level- 46 is carried 'by a pivot 47 (Fig. 5) and has secured at right angles thereto a short arm 48 extending above and below the lever and carrying at its opposite ends anti-friction rollers 49. The brake levers 43 extend upwardly on opposite sides of the arm 48 and bear against the rollers 49 and normally hold the controller lever in a' horizontal position. The inner end of the controller lever extends into 'a switch box 50 secured to the'beam 1, and carries within said box two insulated contacts51, 52. Fixed contacts 53, 54 and 55, 56 are located respectively above and below the movable contacts. The contacts 53 and 56 are connected by a wire 57, and the contacts 54, 55 are connected by awire 58.

The motor is supplied with current from any suitable source, the positive and negative mains being here designated and 'hen the lever 46 is in its central position the motor circuit is open. If now the outer end of the lever 46 is moved downwardly,

the contacts 51 and 52 will be moved upwardly into contact with the fixed contacts 53 and 54,respectively. This will close a circuit through the motor as follows,-.-from the positive main through the wire 59, contacts 52, 54, wires 58, 60 to the upper brush 61, through the armature to lower brush 62,v

throu h wires 63, 57, contacts 53, 5'1, wire 63, fie d winding 64 to the negative main.

If the lever 46 is reversed so that the contacts 51 and 52' engage the contacts 55,- 56. the circuit through the motor. will be as follows,-fron1 the positive main through wire 59, contacts 52, 56, wire 63 to the lower brush 62, through the armature to the upper brush 61, through Wire 60, contacts 55, 51, wire 63, and field windin 64 to the negative main. The direction of t e current through the armature is thus reversed, while it remains the same through the field winding, which will cause a reversal of the .motor. If the outerend of the controlling lever 46 is moved downwardly, the direction of the motor will be such that the receptacle 27 is moved downwardly, while if the lever is moved upwardly the motor will run in the reverse direction and move the receptacle 27 upwardly. The arm 48 operates to separate the. brake levers 43 and release the brakes when the lever 46 is operated in either direction, and when the lever 46 is released the springs 45 operate through the brake levers to return the controller automatically to its.

'plate 12 and I-beam 1 and has secured there-:

to on the opposite side of the beam 1 from the lever 46 a short crank arm 70. Pivoted to the arm 70 and extending upwardly, vertically therefrom, is a rod 71 which is connected to short arms 72. These arms 72 are carried by stub shafts 73, each journaled in any one of a series of holes 74. Secured to the stub shafts 7 3 are'upper and lower cams 75 and 76, respectively. These cams are in the path of movement of upper and lower cam engaging rollers 77 and 78 carried by the counterweight W. The series of holes 7 4 constitute a means for adjusting the height of the czuns 75, 76, and therefore the tions of the counterweight at which the cams will be actuated.

The operation of the hoistingdevice may be briefly described as follon-"s,'1et it be assumed that the carrier frame 7 has been lifted to operative position in the manner already explained, and that the various parts are in the position shown, with the motor circuit open, the brakes applied and the ash can 27 in its upper position, ready to be lowered. It now. the operator moves the 6 controller lever 46 downwardly, the brake levers 43 will be movedoutwardly and release the brake shoes, and a circuit will be closed through the motor which will begin to run in a direction to lower the can 27,

that is, the drive sheave 32 will be rotated' in aclockwise direction as viewed in Fig.2.

35 form,

moved downwardly, the rod 71 is moved up- 10 wardly, swinging the cams 75-and 76 to a downward position. When the receptacle 27 reaches or approaches the lowermost position the roller 77 on'the counterweight \V engages the cam 75 and swings it upwardly,

moving the rod 71 downwar ly and returning the controller lever 46 to a central" osition. This opens the motor circuitan aplies the brakes, bringin the parts to rest. Vhen it is desired to liftthe receptacle 27 the controller lever 46 is moved upwardly to again release the brakes and operate the motor in the reverse direction, at the same time swinging the cams 7 5, 76 upwardly. As the load reaches its up'ward limit of travel the roller 78 on the counterweight moves the cam 76 downwardly and again centers the controlling lever to again bring the parts to rest. The automatic stop devices may be adjusted to-operate the controllerwhen the receptacle is at any desired de th below the sidewalks, and also at any esired height above the walk.

I have shown and described a construction embod ing' my invention in a practical but I do not wish to be limited to the exact construction disclosed, as various changes in details and arrangement of parts might obviously'be made by those skilled in the-art without departing from' the spirit 40 and scope of the invention.

What I claim as new and desire tohave protected by Letters Patent of the United tates is 1. In a hoistingdevice, the combination with n ghide rail, of a tube, a bracket carried thereby and having a sliding connection with the guide rail,'an arm carried by the tube, sheaves journaled in said arm, a flexihle hdisting member engaging the sheaves and extending through the tube, and means for driving the hoisting member. I

2. In a hoistin device, the combination with a vertical I- earn, of a frame slidably mounted thereon, a flexible hoisting member engaging the frame, and means carried by the I-beam' for driving the hoisting member. 3. In a hoisting device, the combination with a vertical I-beam, of a frame movable longitudinally thereof slitg vcs journ'aled in the frame, a motor ,supfiortedon said I-beam, a hoisting chain engaging the sheaves, and

driving connections between the motor and chain.

4. In a hoisting device, the combination of a vertical su porting member. guides extending longitudinally thereof, a frame havinga sliding connection with one of the m es only, direction sheaves carried b the rame, a drive sheave on the supporting member,'a counterweight connected to theother lde only,.and a hoisting chain or cableassoclated with the direction sheaves, drive sheave and counterweight. 5. In a hoisting device, the combination a vertical I-beam, a frame and a counter-5 weight having a sliding connection respec-' tively with the flanges of the I-beam, means for holding the frame in an adjusted position, a drive sheave mounted on the I-beam, and a hoisting chain or cable associated with so the frame, drive sheave and counterweight.

6. In a hoisting device, the combination with a vertical support, of a frame mounted for vertical movement thereon, a cam lug carried by the frame, a latch carried by the 55 support in the path of movement of the ing and engageable beneath said lug to hold the frame in H5 lifted position, and a releasing device connected to said latch and extending below the frame when the latter is in its elerated position. 7. In a hoisting device, the combination with an electric motor, a controlling lever, and a reversing switch in the motor circuits controlled by said lever, of a hoisting cable geared to the motor, a counterweight, cams operated by the counterweight at its upper and lower limits of travel, and connections between the cams and controlling lever.

8. In a hoisting device,'tlie combination with a motor, a controlling lever, a hoisting cable, a counterweight, and driving connections between the cable and motor, of cams located in the path of travel of the counterweight, and connections between-the. cams and controlling lever.

9. In a hoisting device, the combination with a vertical supporting member, a hoisting cable or chain, driving means therefor, a lever controlling said drlving means, and a counterweight, of cams carried 'byasaid supporting member in the path of travel-ofthe counterweight, and a connection between the cams and controlling lever.

10. 'In a hoisting device, the combination with a hoisting chain, driving means therefor, and a controller for the driving means, of a vertical supporting member, a counterweight associated with the hoisting .chain and slidable vertically along said member, cams pivoted to said member and extending into t e path of travel of the counterweight, and operative connections between the cams and the controller.

11. In ahoisting device, the combination with a'hoisting chain-or cable, driving means therefor-,a controller'for the drivingjmeans, and a counterweight associated with the chain or cable, of cams located in the path of travel of the counterweight, operating connections between the cams and controller, and means for adjusting the positions of the cams.

12. In an ash hoist, the combination with a vertical supporting member a hoisting cable, and a counterweight, of the following parts supported by said member,-'a frame vertically adjustable thereon, apparatus for moving the frame, a device for holdin it in its lifted posit-ion, a motor, a drive 5 cave, reduction gearing between the motor and drive sheave, motor controlling mechanism, and brake mechanism.

13. In an ash hoist, the combination with an I-beam, of a carrier guided by one set of flan es of said I-beam, ,za counterweight guifed by the other set of flanges of said I-beam, hoisting apparatus between the latter and both counterweight.

14. In a hoistin device, the combination with a vertical lie and connections the carrier and '15. In hoisting mechanism, the combination with a motor, of a load-carrying device, drivin connections between said parts, a

' pluralityof cams, a connection between said cams for effecting their simultaneous o ration, a controller connected 'to said cams, and a device for automatically operating said cams respectively as the load-carrying device approaches its upper and lower limits of trav l.

16. In hoisting mechanism, the combination with a motor, of a load-carryingdevice,

for the motor 'operatively a counterweight, a flexible driving member connecting. the load-carrying and counterweight, a cam in position to be operated by the counterweight, a brake. for i the motor, and operating connections between said brake and cam.

In testimony whereof, I have signed any name to this specification in the presence of two subscribing witnesses.

DAVID LARS(')N. Witnesses:

' JOHN BELorF,

C. F. CHYTRAUS.

device, motor-

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