US893919A - Hoisting-machine. - Google Patents

Description

No. 893,919. PATENTED, JULY 21, 1908.

' G. E. GRANT.

HOISTING MACHINE. ArrLfoAnou FILED AUG. 1.1907.

4 SHEETS-SHEET l.

No 893,919. IPATENTED- JULY 2 1983' G. E. GRANT. HOISTING MACHINE.

APILIOATZOH FILED we. .1, 1907.

No. 898,919. PATENTED JULY 21, 1908. 0. E. GRANT:

HOISTING MACHINE. AYPLIGATION FILED AUG.1.19D7.

4 SHEBTS-SEEET 3.

V f In? 065 No. 893,919. PATENT-ED JULY "21, 1908.

0.3. GRANT. HOISTING MACHINE.

APPLICATION FILED AUG. 1.1907.

' Chicago,

sT TEsr TENT OFFICE.

CHARLES E. GRANT, CHICAGO, ILLINOIS.

HoIsrmG-Mlicmim.

are, 393,919.

Specification of Letters Patent.

Patented. July 21, 190s.

-. Tcal l whom it may concern:

Beit known that I, CHARLES E. GRANT, acltizen of the United ta te's, residing at 7 1n the county of Cook and State of Illinois, have invented a new and useful Improvement in Hoisting-Machines, of which the following is a s ecification. My invention're ates tothat classof machines used in or about buildings under construction for raising .the building material,

I andwhich are operated by horse power.

' Theobject of my invention is to provide a shift mechanism forming part ofthe machine which is operable at the point where the' load is removed from the car and at thepoint where the horse power is applied to the machine, ashift mechanism that can be operate'd'gby'hand to reverse and stop and lock the power mechanism at any point in its movement, that .will provide for one circular dlrectlonj for the movement of the horse,

lessenthe distance to be traveled and reduce the-work of the horse to a minimum, and

' that will allow the relative positions of-the horse'and cars to be adjusted as the conditions .of the surroundings may require.

:The manner in which I accomplish my ob ject is described in the following specifica- Figure 1 is a top plan view of the hoisting machine showing the relative positions of the cars, cables and ower machine.

Fig. 2 is a vertical view of t e same relation of parts as in Fig. 1, the'viewbeing from the front end of the power machine towards the cars. Fig. 3 is a side elevation, the parts being in the same relative positions as in Figs. 1 and 2.. Fig. 4 is an enlarged view of part of the shift mechanism located at the top of that part of the guide frame designated as the orse. Fig.5 is an enlarged front view of that art of the mechanism shown in Fig. 4. Fig. is a to plan view of part of the power machine an mechanism, the main gear not being shown.

' Fig. 7 is a detail view of what I call a worm ism on the line 88 Fig. 6.

screw forming part of the shift mechanism. Fig. -8' is a vertical sectional view of the power machine and part of the shift mechan Figs. 9 and 10 are face views the clutch heads forming parts of the shift mechanism.

.tifcal guides for t e cars. oil 'a'plank A, whichforms' the. base of In the drawin s A indicates the four ver- These guides rest connected part of the shift.

guides extend vertically through an aper-v ture in the floor or floors B above. Extendlng over and across this a erture is a horse A This horse consists 0 two base planks A fourrlegs A, two parallel timbers A and end bra'c'es A firmly secured together and temporarily secured to the flooring or joists B, on which the horse rests.

The guides A extend up between the par- .allels A and are'secured thereto. Between these guides are two cars, C and G which are free to be moved vertically between the baseplank A. and the top of the horse A These cars are suspended on a cable D. Between the parallels A and rotatably supported therein are two-cable Wheels D, over which the cable D is free to run. The cable D passes from the whee'lsl) down in front of the two center guides and under two guide wheels D secured-side by side on the base in the Fig. 3. From these two wheels the cable extends to the driving wheel 1) around which it is looped several. times. This wheel D is secured'on the driving shaft of the power machine hereinafter described. Rigidly secured to each of the wheels D 'isa ratchet wheel E, the inclination of the ratchet teeth on one wheel being opposite to that of the other. Supported in the bearings E which are secured on the central part of the parallels A is a rocker shaft E having an arm E secured on this rocker shaft outside the parallels is a cable wheel E and a crank E Slidably secured on the inside face of this crank is a locking bar E This bar is adapted to be locked in an immovable position on said crank by a pin E extending through said crank and through said bar, and said bar is ada ted to be actuated by a lever E and a coile s ring supported on said bar, the pur ose of w iich is hereinafter described; pivotal y secured to the rocker shaft arm E are a air of connectin rods F. In the free end 0 each of these r0 s is a slot F adapted to allow a pin F to slide freely therein. Each.

of these pins projects from the side of a pawl F These pawls are pivotally supported in bearings F secured on the parallels A The free end of each of these pawls is adapted to dro into and engage the ratchet teeth of eae of the ratchet wheels E, and to be raised and thereby released from said wheels by said connecting rods F, as shown in Fig,

-K" as shown in Figs. 6 and 10.

5. Aflixed' on the frame E close to the hub of the crank E is a disk G, having two notches G and G These notches are adapted to admit the end of the locking bar E and to thereby hold said crank in a locked position for the )urpose herein after described.

Su ported on the wheel E is a shift cable H. flhis cable runs down in front of the two center guides A under the two small guide wheels H, side by side, secured to the base plank A between and to the'front of the cable wheels D only one of the wheels H is shown in the drawing. From these wheels the cable H passes around the wheel H on the power machine and is secured thereto for the urpose hereinafter described. The cable and cars C and C are operated by a horse power machine constructed and operated as hereinafter described.

The base of the machine consists of a rectangular frame J, the sides and ends being halved into each other to form a flat base. On the side pieces of this base are main shaft bearings J secured to the base, by bolts J Rotatably supported in these bearings is a shaft J the central part of this shaft is square. Rotatably supported on this shaft close-to said bearings are two gear wheels K and K the parts K and K forming the female parts of clutches movable -on said shaft.

111 the vertical face K of each of the parts K and K are two recesses K Each of these recesses has a deep radial face and a .base concentric with the axis of said gear.

This base in each recess is inclined outward from the bottom of the radial face to the face Slidably suppb-rted on the square part of the shaft J are the male parts of the clutch. This consists of a sleeve L having clutch heads L and L and a central disk L In each of these heads are two longitudinal apertures L parallel with the axis of said sleeve; slidably supported in each of these apertures is a pin L held in a normal position by a coiledspring L secured in said aperture by a plate L secured to the head by screws L These pins project under ressure of the springs from the face of the eads, and are a apted to enter the recesses K in the parts K and K of the gears K and K and the compression of the springs by the pins permits the face K to force the pins inward whenever the movement of the sleeve on said shaft forces the points of the pins against said face between the recesses K Pivotally'supported on the frame J is a forked lever M. The forked ends M of this lever are provided with anti-friction rollers M which are adapted to engage each side face of the disk L lever is provided also with a. roller M Supported on the frame J is a shaft N arranged parallel with the main shaft J in the bearings N and having .a lever at one end.

Secured on the central part of thisshaft is a The other end of the- V tor on the floor at the top of the hoisting worm gear N The spiral recess of this gem" is adapted in depth and shape of the walls to receive the roller M on the single end of the forked lever M and to limit the rotative movement to less than one full revolution of the shaft N.- The walls of the end parts of this spiral are at right angles to the axis of the sc aw and are thereby adapted to lock the leve a the end of each movement. Sup orted on the frame J are two guide wheels 8,- and O these wheels rotate freely on the stud shaft 1' secured in the box 0 shown in Fig. 6. Th outer wheel 0 is adapted to guide the caitie D and the wheel 0 to guide the cable H, the cables passing beneath said wheels cics to the ground so the horse may easily ste over them as he circles around the machine. Secured on the top of the frame J is a spider frame bearing P. The center of this frame is elevated some distance above the sleeve L and disk L The top of this frame forms a horizontal bearing P Rising vertically from the bearing P is a stud P", the end of which is threaded and provided witha nut P Bonitably supported on the bearing P and stud. if

of the spider P is a "main gear wheel R} the teeth of which mesh into the gears K and IQ as shown in Fig. 8. The mesh of these gears is maintained by rollers Rrevolubly secured on the studs R supported in the bearings JR These rollers are adapted to engage the smooth surface of the gear R and tothereby prevent it from rising from the gears beneath it. Forming a part of the hub R of this gear is stirrup R of the sweep to project through. On one of the spokes of the gear R is a vertical brac he t R adapted to support the sweep in a hori zontal position. 'lhe swee S is -;;:-rovid ;d with an eye bolt 5, to which t e harness of the horse is attached and an eye bolt to which a chain or rod S can be attached to form a brace from one of the spokes of the gear for the purpose of strengthening the sweep.

When my invention is constructed as described and the several parts erected and connected its operation is as follows: The cable H is adjusted so that when the car (I is down and the car 0 is up the crank E is locked in the notch G2 as shown in Fig. 2, an d the lever N is in a horizontal position, the lever M is in the end of the worm gear and locked in that position bythe walls of those parts of the gear being at right'angles with the axis. The sleeve is thereby held with the face of the clutch head L closeto tit. clutch face of the gear K the sliiflingpins under pressure of the springs being forced tethe full de tact with t .e' radial faces therein, the pins Ti 'th of the rece'ssesK. and in con-- the other end of the sleeve just ciearingfitcia clutch face of the 'gear K. Inthis posi-.;..cn

adapted to allow the end i.

- wheel.

moves the connecting rods F over to the right raising the pawl out of contact with the ratchet wheel E on the right and allows the pawl on the left to drop on the ratchet'wheel on the left and to thereby prevent any re verse movement of the ratchet and cable This movement of the crank transmitted by the cable H to the shaft N'rotates the worm gear N moves the lever M, which thereby forces the. sleeve to the left and its clutch head L into engagement with the gear K, thereby locking those parts and releasing the gear K which is then free to rotate on the shaft J The horse attached to the sweep S circles to' the left and thereby rotates the gear R, gear K, shaft J and cable driving wheel I), and cable D, thereby raising the car C and lowering the car C The horse is stopped when the car 0 reaches the bottom and the pawl and ratchet wheel holds the load till it is removed. The crank when moved to .the right reverses the movements of the machine just described. When it'is most convenient to operate the cars from the ground, the bar E is drawn by the lever E from contact with the disk G and locked by the insertion of the pin E in the crank and bar, then the operator by moving the lever N controls the movements of the machine, the movements of the shaft N being transmitted to the rocker shaft and ratchets by the cable H. i

What I claim as new and desire to secure by Letters Patent is 1; In a hoisting machine of the kind described, the combination consisting of a main shaft having a cable wheel, said shaft being rotatabl-y supported in suitable bearings and frame, the central part of said shaft being angular in cross section; a double headed sleeve slidably supported on the angular part of said shaft and rotatable with it, said sleeve having a' central disk. Each head of said sleeve having longitudinal apertures' parallel with the axis of said sleeve and in each of said apertures, a spring pressed clutch pi'n extending normally from the vertical face of each of said heads and slidable therein; a pair of clutch gears rotatably supported on said shaft between each bearing and. eachhead of said sleeve, the vertical face of each of said gears having a pair of recesses concentric with the axis of said gears and inclined from the face of the gear to a depth therein adapted to receive and hold the clutch pins when projecting from the heads of said sleeve; a horizontal gear'supported above and meshed in both of said clutch gears having a stirrup and bracket adapted to support a sweep therein; a worm gear shaft located in the same plane and parallel with said main shaft; a worm gear secured on the central part of said shaft and rotatable with it; a double ended lever pivotally supported in the same plane'and between said main and worm gear shafts, a single end of said lever being engaged between the walls of said worm gear and the forked end of said lever engaging both sides of the disk of said sleeve, the partial rotation of said worm gear operating said lever and thereby pressing its forked end. against said disk and moving'sald sleeve on its shaft and one of its heads into contact with one of said clutch gears; means on the ends of the worm gear shaft for partially rotating said shaft in either direction and. thereby reversing the movement of said sleeve and the rotationof said main shaft and cable wheel during the rotation of said horizontal gear by'said sweep.

2. In a horse ower hoisting machine, the combination wit 1 the frame; of a main shaft and wheel affixed thereon, sup orted in said frame; a double headed sleeve aving acen tral disk, said sleeve being slid'ably secured on said'shaft and adapted when rotated to turn said shaft with it a pair of clutch gears journaled on said shaft. adapted to he engaged by the heads of said sleeve; a main gear meshed with said clutch gears and adapted to rotate them; means for rotating said main gear; a worm gear shaft and means for partially rotating it in either direction; a worm gear affixed on said shaft; a lever engaged with said worm gear and said disk on said sleeve adapted when'moved by rotary movement ofsaid worm gear to move saidsleeve in either direction on its shaft into contact with one or other of said clutch gears.

3. In a horse ower hoisting machine, the combination wit supported therein, said shaft having a cable wheel; of a sleeve-slidably secured onsaid shaft, each end of said sleeve containing a pair of pins parallel with said shaft, each of said pins bein slidable in said sleeve and. adapted to pro ect therefrom under pressure of a spring mclosed in said sleeve ant. in contheframe-and main shaft tact with the pin, said sleeve having a central disk by which it is inoved longitudinally on said shaft; and a pair of worm gears journaled on said shaft adapted to be engaged alternately by the pins in said sleeve; a main gear wheel enmeshed with and adapted to rotate said gears on said shaft, a sweep attached to said gear by which it is rotated; a shift shaft and worm thereon, said shaft bein arallel with said main shaft, and a pivote ever in en agement with said worm gear and with the risk on said sleeve whereb said sleeve is moved longitudinally on sai main. shaft and into engagement with said gears, when, said lever is. actuated by the partial rotation of said shift shaft, and means for operating said shaft.

4. In a horsepower hoisting machine,. the combination with the frame, the main shaft and cable Wheel supported therein, a sleeve siidably secured on said shaft, said sleeve .ng a pair of spring pressed pins in the thereof; of a air of gears journaled on said'shaft, each of rality of recesses in the'vertical face, sai 'recesses being concentric with the axis of-the gears, and inclined from the face inwardto a depth sufficient toreceive said pins in said sleeve, the inclination .of said recesses being 'Aflit ted to regulate the sliding movement of pins into said recesses; and a main'gear wheel enmeshed with said gear, and a sweep attached thereto whereby said gears are rotated; a shift shaft and worm gear thereon, and a pivoted'lever engaged by said worm gear and in engagement with the disk on said sleeve, whereby said sleeve is moved longitudinally onsaid main shaft intoengagement with said gears, when said shift shaft is partly rotated, and means for operating said shaft.

5. In horse ower hoisting machine of the kind described, the combination with the frame, the main shaft therein, the sleeve, and gears thereon; of a main' gear wheel rotatably supported on a vertical shaft, said wheel being provided with a stirrup and bracket adapted for the support and adjustment'therein of a sweep for operating said wheel, said wheel being enmeshed with and adapted to rotate said gears on said main shaft; and a shift shaft and worm gear thereon, and a pivotal lever engaged by said worm gear and in engagement with said sleeve,-. whereby said sleeve is moved longitudinally on said shaft by the partial rotation of said shift shaft, and means for operating said shaft.

6. In a horse ower hoisting machine of the kind describe the combination with the frame, main shaft therein, sleeve slidable said gears having a lu-,

on said shaft having spring pgessed slidable pins therein, clutch gears journaled on said shaft having inclined concentric recesses adapted to admit said pins, main gear wheel enmeshed with said gears, having a stirrup and bracket; of a shaft supported in said frame parallel with ,id main shaft and a worm gear thereon, said gear being adapted to admit e end of a lever between its walls, the any"; orinclination of said walls being adapted to move the end of said lever horizontally and to. lock said lever at each end of said worm till said shaft and worm is reversed, and a lever pivotally supported on said frame, said lever having a single end engaged in said worm, and a forked end in engagement with a disk part of said sleeve, whereby said sleeve is moved longitudinally on said main shaft, and means for operating said shift shaft.

7. In a horse power hoisting machine of the kind described, the combination with the frame, a main shaft therein, a sleeve slidable on said shaft having spring pressed slidable pins in the ends thereof, a pair of gears journaled on said shaft having inclined concentric recesses adapted to admit said pins, a gear wheel having a stirrupand bracket for the support of a sweep, said gear wheel being enmeshed with saidgears on said shaft; a.

shift shaft in said frame and worm gear thereon; of a centrally pivoted double ended lever supported on said frame, one end of said lever adapted to be engaged and moved by said wormgear, the other end being adapted to engage said sleeve and to move it longitudinally in either direction on said shaft when actuated by said worm on said shift shaft,

and means for operating said shaft, as described.

CHARLES E. GRANT. Witnesses JULrUs' RUBINsrnIN, Josnrn STAAB.

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