US1878823A - Elevator apparatus - Google Patents

Description

Sept. 20, 1932. N. 0| 'BARTOLOMES ELEVATOR APPARATUS 3 Sheets-Sheet l Filed 1 y 18, 1930 Sept. 20, 1932- N. D] BARTOLOMES ELEVATOR APPARATUS Filed July 18, 1930 3 Sheets-Sheet 2 Y p 1932- I N. Dl BARTOLOMES ELEVATOR APPARATUS Filed July 18, 1950 s Sheets-Sheet 3 Patented Sept. 2%, 1932 1 1 9877823 1;

M TTE STATE PA NICOLA DI BARTOLOMIQES, OF BRQGKTON, MASSACHUSETTS V ELEvA'roa'ArPAnA'rUs 7 i 1 Application filed July i930. Seria1fNo. 468, S1i-. v My invention relates to elevator apparatus is secured abeveled gear 10 meshing with a and it has for its object to provide an apbeveled gearll that is compounded with a paratus of this class of simple, efficient and Spur gear 12 rotatably supportedby a stud inexpensive Construction particularly adapt-j shaft 13 secured to an upright 14.

[5 ed for use in connection with the shaft of a The upright 14 is rigidly secured to a plat- 5 mine or the like and so constructedvthat'an form 15 that is supported in an elevatedpooperator located upon the surface of the sition above the ground by posts 16 Whose ground may control the movements of the lower ends are secured to a base 17 car. The spur gear 12 meshes with another spur 1c 1 To these ends I have'provided an elevator gear .18 located directly above it and fast on 0 i apparatus having the peculiar features of ashaftlQ that is'journaled in bearings proconstruction and mode of operation set forth vided upon the upright 14 andanother up w v in the following description, the several nov-' right 14a.

el features of myinvention being particu I The shaft 9 is journaled in bearings pro- 15 larly pointed out and defined in the claims Vided upon uprights 20. v

at the close thereof. a p The shaft 19 has'loosely mounted upon it In the accompanying drawings: two, comparatively wide pulleys 21 and 21a Figure 1 is an elevation, viewed from one between which is disposed a relatively narside, of an elevator apparatus constructed in row pulley 22 that is fastened rigidly to the 2 accordance with my invention.- shaft 19. i Figure 2 is an elevation of the apparatus The pulleys 21, 21a and 22 have associated shown in Figure 1 as viewed from the left with them two belts 23 and 24, the former bein the latter figure. ing straight and the latter crossed and these 7 Figure 3 is a section on line 83 of 'Figtwo beltsextend around a drum or pulley 25 ure 1. V that is rotatably supportedflby a shaft 26 Having reference to the drawings A is the ournaled in uprights 27 provided upon the shaft of a mine or the like within which is platform 15. v provided a framework 1 constructed inmost Mounted upon the base 17 beneath the plat: part from timbers and being approximately form 15 is an electric motor M whose arma- -llrectangular in cross section as shown in ture shaft 26a, Fig. 2, carries apulley 27 conw Fig. 3. nected by a straight belt 28a with the pulley This framework 1 supports a pair of ver- 'or drum 25. r tical metal rails 2, 2 which are rigidly fas- Whenthe motor M is in operation, the tened upon the inside of the frame 1 and upon. drum 25 is continuously rotated in one direcopposite sides thereof. Mounted to slide tion andit will be clear that when the belt vertically upon these rails 2, 2 is a car 3 to 24 is on the fast pulley 22, the shaft 19 and the top of which are fastened the lower ends gear18 are driven in one direction and when of four cables 4, one near each corner of the the straight belt 23 is on the fast pulley 22, car. The upper ends of these cables 4 are the shaft 19 .andgear 18 are driven in the fastened to a coupling member 5, which in opposite direction. It will also be clear that turn is fastened to one end of a wire cable 6 when the belts 23 and 24 are on the loose which extends upwardly therefrom over a pulleys 21 and 21a,shaft 19 and gear 18 are sheave 7 rotatably supported at the top of the at rest. Thus by controlling the positions frame 1, and thence downwardly to a drum of the two belts 23 and 24, the car .3 maybe cable 6 is sufficiently long to permit the car The 'two belts 23 and 24 are both engaged 3 to move vertically from its uppermost pobya shipper member 28 having a rigid stem sition illustrated in the drawings to the bot- 29 'slidable endwise in bearings on uprights tom of the shaft A. 30 provided upon the top side of the plat- 59 I The drum 8 is fixed upon a shaft9 on which form 15. At one end thereof the stem 29 is Y 8 to which its opposite end is fastened. This raised, or lowered, or held stationary. 1

pivotally connected at 31 with oneend of a connecting rod 32. whose opposite end ispivotally mounted upon a wrist pin 33 projecting from one face of a wheel 34 fast on a shaft 35 journaled in bearings on uprights 36 provided upon the'top side of the platform 15.

projects a crank handle .38 by'means of which the shaft 35 is manually rotated. It will be clear that rotation of shaft 35 and wheel 34 acts through the connecting rod 32 to shift with three notches a, b and c to co-operatewith a roll 39 rotatably supported by a detent arm 40 that is pivotallymounted at 41 upon the frame 1 so as to have capacity for swinging movement toward and from the Wheel 34. The detent arm 40 is firmly but yieldingly urged toward: and against the wheel 34 by means of a spring 42.

is adapated to seat withineither of the notches a, b ore and while occupying position therein to yieldingly hold the wheel 34v against accidental rotative displacement.

The notch a is positioned upon the periph-l cry of the wheel 34 so that when belt 24 is on loose pulley 21a and belt 2.3 is on the tight pulley 22, the roll 39 occupies position therein and yieldingly holds the shipper 28 in that position. Also the notch-72 is located on the peripheryof wheel 34 so that when roll shown in the drawings the shipper 28 oocupies a position, where it holds the crossed.

belt 24 on the tight pulley 22 and the straight belt. 23 on the loose pulley 21. Thus the engagement of the pivotal detent arm 40 with either notch a,- b or c, not only serves to yieldingly hold the shipper 28 in its selected operative position but to also accurately position the pair of belts 23 and 24 with respect to the pulleys 21, 22 and 21a. x

Fast upon theouter end of thegstem 29 is a sleeve 43 provided upon its opposite sides with pairs of ears to'which are pivotally connected the inner ends of a. pair of toggle links 44 whose out-er ends are formedwith slots 45 occupied by studs 46 provided at the free ends of a pair of brake shoes 47."

These brake shoes 47 are pivotally supported at 48 upon a stud projecting from the upright Thisshaft 35 also carries a grooved pulley wheel 37 from the outer face of'which I base 17.

shaft 19. A spring 50 having its opposite ends connected with the two brake shoes 47 serves to yieldingly hold said shoes at the limit of their movement toward each other normally. g

When the shipper 28 is at the limit of its movement toward the left, Fig. 2, the inner ends ofthe toggle links 44 are at one side and to the left of a vertical plane extending through the studs 46, but when the shipper 28' is-moved toward the right, Fig. 2, into its intermediate position the pivots 51 at the inner ends of the toggle links 44 occupy positions within thesame vertical plane with the studs 46 and the inner ends of the slots 45 8Q then force and hold the-brake. shoes 47 against theinterior'of the brake drum 49 thereby locking the shaft'19 against rotation in either direction while shipper 28 occupies its intermediate position. It will be clear that when the shipper28 occupies this-intermediate position the pair of belts 23 and 24 are on the loose pulleys 21 and-21a. .When the shipper member 28 is shiftedfrom its intermediate position to the limit of its movement toward theright, Fig. 2, the pivots 51 at the inner ends of the toggle links 44 are carried into v; 7 positions at the right of a vertical plane The roll 39 of the pivotal detentarm 40 extending through the studs 46 thereby perclear thatwhen the shipper 28 is at the limit of its movement in the opposite direction and the crossed belt 24 is driving shaft 19, the pivotal connections 51 are disposed as shown 1 in Fig. 2 and the brake shoes 47 are held out of engagement with the brake drum 49 by the spring 50. Thus the shipper member 28, including its stem 29, automatically opcrates and controls the brake shoes 47 so 1o" that the brake is unset when either belt 23 orbelt 24 is on the tight pulley 22 and said brake is set and shaft 19 is held at rest when the pair of belts 23 and 24 are on the loose pulleys 21 and 21a, respectively.

Beneath the elevated platform 15 is provided agrooved pulley 52 which is connected with the grooved pulley 37 by means of a belt 53, said pulley 52 being rotatably supported by a shaft 54 supported by the frame of the apparatus and, like the pulley 37, being provided upon-its outer'face .witha crank handle 55, accessible to a person standing upon the base 17 Thus the shaft- 35 may be operated either by a person on the plat- 1 form 15, orby, a person standing on the I have herein shown the car 3 as provided upon its top with safety mechanism by 'means of whichit is'supported in the event thatthe cable 6 is broken. This mechanism includes ,a pair of brake shoes 56 slidably' 7 connected with the topwall of car 3each 14a by which. stud said brakeshoes. are supported within a brake drum 49 fast on the} tendin'gnstems 57 and each stem 57 is con- 18';

of which is made with a pair of inwardly. ex-

nected with one of the four cables'i so that the tension onthe cables 4 due to the weight of the car 3 serves to hold the brake shoes 56 retracted against the pressure of springs 58 surrounding the stems 57. In the event that the cable 6 is broken the resulting slackness of the cables 4: permits the springs 58 to force the brake shoes 56 outwardly against the rails 2 thereby preventing or retarding the fall of the car 3.

What I claim is:

1. In an elevator apparatus, in combination, a cable-operating shaft; two pulleys loosely mounted on said shaft; a third pulley tightly mounted on said shaft between said two loose pulleys; a pair of driving belts co-operating withsaid pulleys one of which is crossed and the other straight; brake mechanism for said shaft including a pair of movable brake shoe members; a manually controlled shipper member for shifting both belts sidewise simultaneously, means slidably supporting said shipper member alongside of said pulleys so that it is movable endwise on a rectilinear path parallel with said shaft; a shipper operating member that is manually adjusted rotatively; a connection through which said member when rotated acts to shift said shipper member endwise; detent means for engaging and yieldingly holdin said shipper operating member in either .of three different predetermined positions, and two links disposed upon opposite sides of said shipper member, each having one end thereof pivotally connected with said shipper member directly opposite the pivoted end of the other link so that forces imposed endwise on said links are opposed, and having its oppo- 8. An elevator apparatus constructed in accordance with claim 2,,wherein said rotatable shipper operating member is made with three recesses, each of which is occupied by said detent means at times to hold said rotatable shipper operating member in adjusted position.

Signed by me at Boston, Suffolk county, Massachusetts, this 15th day of July, 1930.

, NICOLA DI BARTOLOMES.

site end portion connected with one of said brake shoe'members.

, 2. In an elevator apparatus, in combination, a cable-operating shaft; two pulleys loosely mounted on said shaft; a third pulley tightly mounted on said shaft between said two loose pulleys; a pair of driving belts cooperating with said pulleys, one of which is crossed and the other straight; brake mechanism for said shaft including a pair of movable brake shoe members; a manually controlled shipper member for shifting bo'th belts sidewise simultaneously: means slidably supporting said shipper memberalongside of said pulleys so that it is movable endwise on a rectilinear path parallel with said shaft; a shipper operating member that is manually adjusted rotatively; a connection through which said member when rotated acts to shift said shipper member endwise ;,'a detent member for engaging and 'yieldingly holding said shipper operating member in either of three different predetermined positions, and two links disposed upon opposite sides of said shipper member, each having one end thereof pivotally connected with said shipper member directly opposite the pivoted end of CERTIFICATE OF CORRECTION.

Patent No. 1,878, 823. September 20, 1932.

NICCLA DI BARTCLOMES.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as foliows: Page 3, line 67, claim 2, for the word "opened" read opposed; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office. r

Signed and sealed this 29th day of November, A. D. 1932.

M. J. Moore, (Seal) Acting Commissioner of Patents.

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