US1274546A - Lifting device. - Google Patents

Description

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V,Y C. HILUKER.

LIFTING DVECE.

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A um, vudm met in '1221151 Walls Lnvrma DEVICE.

Specification ot Letters Patent.

Patented Aug. 6, 1918.

To all whom it may concern.'

Be it lmown that HILLIKER, a y Britain, and resi the P Quebec and the Dominion of ACanada, lave invented certain new and useful Improvements in Lifting Devices, of which the following is a specification.

in lifting heav several parts of the d accessible for elliciency and generally parts of the device to better perform the functions required of them.

With the above and other objects in view the invention consists essentially of the improved construction articularly described and set forth in the fhllowing specilication an accompanying drawings forming part of the same.

In the drawings: y

Figure 1 is a sectional elevation of the improved lifting device.

ig. 2 is a transverse section on the line 2`2 of Fig. 1.

Like characters of reference refer to like parts in the several figures.

eferring to .the drawings A represents the lifting device comprising the frame 10,

rs 11 operatlvely connected 4,by the ends 12, the Said side members being formed at their upper and lower edges, with. inwardly extending anges 13 and tlfl'while intermediate of their height they are formed. with a semi-circular ading 15, the object of which will be made hereafter.

- Vidably operating in the frame are e p of blocks 16 threaded rbloc s rom each other, the spindle 17 is provided with right and left han threaded portions en aging with the said locks.

i he spindle 17` is rotatably supported in the end walls 12 of the frame 10 and toprevent longitudinal displacement ofthe spine, provide a pair of collars 18 located a 1 jacent to the @pds of the spindle and designed to engage with the inner face of the` with which the spindle 17 makes larly disposed arms ,advertentl sli :itis

The Arejecting ends of the spindle 17 are square( as shown at 19 so tia/t a sp may be readily engaged with the rotary motion thereto.

Each of the blocks 16 mediate of its height and on the lateral walls with yrecesses 20 adapted to engage with a ading 15, so that during the motion of the is provided inter blocks 16 they cannot be moved out of alinement.

These blocks are also provided on the upper and inner faces wit recesses 21 designed ends of the levers 22 pivotally secured 1n position `by the pins 23. 22 are arranged. in sets adjacent to each lateral wall of the blocks 16, and are preferably arranged in airs diagonally dis posed to each other an fulcrumed intcrme diate of their length 'by the bolt 24, which carries a distance piece 25 to properly space the sets 0f levers, so that the levers are at all times held in esired position to nssnre the proper workin of the device.

fige levers 22 are conthe lower ends of the levers 26, pairs diagonally to The levers 22 and 26 are connected by bolts 2T which also carry distance pieces 28 to hold the levers 26 in the desired spaced position, while the upper ends of the levers 26 are connected bythe bolts 29 to the lower ends of the links 30. The links 30 are spa-ced he distance pieces 31 carried by the bolts mounted.

is'provided `with a pair of 36 provided ina pair of anguare connected by the flexible members 38 passing around the distance 1s i racket arms carrying a latform tel'mediate its bres th with pieces 31 to the distance piece 8 on the bolt 9.

It will thus be seen that the platform 36 is at all times held in a horizontalI `osition `by means of the flexible ln V u and there is .no possibility of the vobject lifted ini.ging this-operation.

spindle 17 is' rotated and the mocks 16 are spaced apart to their fullest extent to perO mit of the platform 36 being placed under the object to be lifted. Rotary motion is novir transmitted to the spindle AL7 forcing the blocks 16 together, thereby actuating the lower ends of the levers 22, which move around the fnloruln bolt 24 tending to close up the levers and so elevate the upper ende` thereof and thus'. motion is transmittrd through the levers 2b' to the linkel 30. and the upward force will now litt the object placed on the platform 3G.

To .lower the object it is only necessary to rotate the spindle 17 in the opposite direction to that of elevating, whereupon the lower ends of the levers 22 will be epad further apart, rotating the levers around their fulerum bolt 24 and tendin v to open the levers and lower the upper enf s ther-ooh this motion being transmitted through the levers S26 to the links 30, thereby lowerilig the platform 36 and the object earried thereon.

From this description it will be seen that I have invented a lifting device which is of an extremely simple nature and in which a plurality of levers are utilized, so that the power given to the machine initially is multiplied to the desired extent to permit of heavy objects being lifted without inminvenienee.

As many Changes could he made in the above construction, and widely different emliolinnite of my invention, within the scope et" The iflaiins con strncteal` without departing from the spirit or scope thermal', it intended that all met tei' rontaiml. in the accompanying Spezifimany apparently cation and drawings Shall be intorprehad ne illustrative and not in a limiting Sense..

What l claim as; my invention rs;

i. A lifting devire eonipriang a plurality ol' pivoted levers arranged, in pairs diag; onally to each other, a plattform aai-riad by the levers, flexible means for retaining` the platform in a horizontal plane, and moans for actuating the levers.

2. .A lifting device comprising a phflrality of pivoted levers arranged in paire diag onally to each other, a pivoteri bracket having a pair of arios` carried by the levers, a platform Supported by the levers having angularly disposed depending arms, and means for moving the leversu 3. A lifting device oomprisino a frame having beinlinge` on the Side walls thereof` blocks having recesses in the lates-al Walla;` engaging the headings, a plurality of piv oted levers carried by the blot-the, load engaging ine-ans oarried by the levi-,rs and means t'or actuating the blocks longitndt nally of the ici-annuy the headingpreventing' the hlw` lis from twisting under sti-eee.

l The devine ol" rlaini IS with the aildition of flanges lfarriecl by the side walls extending therefrom at right angles, the beading and HYingee together pri-writing the bled-1e from twisting under sirven A lifting devire (gon'iprising a plurality of ,ijeivoted crossed levers. a pivoted breeket carried by the imei-1, a platform 'having angular-ly dieposed depending arme ffarried by the bracket, flexible means engaging the depending arme for nmii'ii'aining the plat form in horizontal position` and means for actuating the levers.

VEEN ER JH ABLE. Si 'H l Llil Klilliti.

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