US1501963A - Hoist - Google Patents

Description

July 22 1924. I 1,501,963

J. B. M QUEEN HOIST Filed April 11 19?.) 2 Suzuki-Sheet 1 55 um/Mo Jama5 E1-MEQuEEn July 22 1924.

J- B. MCQUEEN HOIST Fil ed April 11,

1921 2 Sheeta-Sheel 3 anmnfoz Jame sfialvicllue an Patented July 22, 1924.

UNITED STATES JAMES B. MC/QUEEN, F PRESTON, IDAHO.

HOIST.

Application flied April 11. 1921 To all 701L077], it may concern:

lie it known that l, JAm-Ls l5. McQin-uax, a citizen of the United States, residing at Preston, in the county of Franklin and State of Idaho, have invented certain new and useful Improvements in lloists, of which the following is a specification.

This invention relates to improvements in hoisting mechanisms.

The primary object of this invention is the provision of an improved hoisting mechanism which may he used in connection with the elevation and lowering of hoists for the efficient performance of such duty, receiving the driving power therefor from a prime mover which may he also used for operating other mechanisms, such as a concrete mixer; the hoisting mechanism being particularly designed s: that it may be moved into drivin? relation with the prime mover desired.

)thcr objects and advantages of this invention will be ap arent during the course of the following r etailed description.

In the accompanying drawings, forming a part of thisspecification, and wherein similar reference characters designate cor responding parts throughout the scyeral views.

Figure 1 is a side elevation of the improved hoisting mechanism, showing the prime mover therefor, and the transmission mechanism for connecting the 'sameior operation by the prune mover.

Fi 2 is a cross sectional view taken suh stantlally on the line 22 of Figure 3.

Fig/3 is a plan vicar oil,the -improved hoisting mechanism.

Fig. 4 is a cross sectional view taken suhstantially on the line 1 4'01 Figure 3.

Fig. 5 is an end elevation ol' a bracket construction which may he used in connection with the lnovnhh: mounting of a drum supporting shal'l. used in this invention. F

Referring to the drawings in detail,-

Serial No. 460,331,

include. a pair of longitudinally exlondinn sidilu-nms 2) connected together hy lhiupstanding suhstnntially inn: 'J'tl U-shnped brackets 21, which l'XllEIlll transversely acro s the frame If). The upper terminals of the hraclols 2i curry suilnhhhearings 215. in which is rolatuhly mounted lllt drivrnshaft 2 5. The lower ti-rniiualsol l he hrnr-ln-lsll are provided with atta hing I'm-1,21, which form Int-ans whorehy tluhrarlu'ts ill may he read ily holtcd or otherwise secured to the longiludinally mitt-oiling side humus 20. lhe bracket 21 nearest to llnrprinumover (I, at its outer face, is provided with a hearing 2:1 in which rotaiahly mounted the crank shaft 14. The out r end of the crank shaft 14 h g k yed or otherwise si-rui'rd thereto a si'irocliot wheel 26. which is in the same plane with the relatively large sprorkct wheel 37 carried hy shaft 23, and a drive sprocket chain 28 is trained around these sprocket wheels. The hracloet 21 farthest from the prime mover (I has its outer faciprovided with a hearing' 25), which is meant ed in a plane below the hearing, 25 and ro laiahly supports the counter shal't 30, which has keyed or otherwise secured thereto a sprocket ivhri-l 51, which is in the same plane with a sprocket wheel 32 lcrycd to the drive shaft 2 'l lltlflrfilll'ntlfltt wheels 31 and 32 have trained around the same a drive sprocket r hain ishaft 3U is provided with a relativ ly large friction disior drive wheel 254, the purpose of which will he hercimii'ler more fully dcsr-rihed.

The hoisting devi e A includes a pair of relatively small hrachets $55 and 2H), which are holted to the upper surfaces-of the longitudinally extending heams 2H, and which are arranged intermediate the relatively large inverted U-shaped hraclcels 21. -'lhe bracket 35 has a guide 237 holti-d upon the upper surface of the hrarkct and provides a slot 38" adapted for alignment with a slot 38 in the bracket 35 to receive the pivot. holt 3!) which xtends through the inner end of a shaft 4-H. The rod of [he shall is squared as clearly shown in Figure 5 of the drawlugs. 'lhe aligning slots 18" and 358 provide moans wherehy the shaft 40 may he adjusted, o as to allow for the adjustnu-ni of the direction of pull, so that the rope will always roll evenly upon the drum 4]. The drum 4! is rotatahly mounted upon the opposite end of the shaft 40 from the bracket 'l'he inner end of the" lUU i 35, and this end of the shaft extends beyond the bracket 36. The bracket 86 is also provided with a guide 42 in which is slidably mounted the shaft 40, to permit the shaft to swing in an are at this point. The drum 41 may be of the ordinary construction and has applied to the inner end thereof the friction disc or driven wheel v43. The outer surface of this friction disc may be provided with rubber, fiber, or the like, and is adapted to be moved into and out of engagement with the friction disc 34 so as to permit the rotation of the drum 41.

A hand lever 44 is provided for swinging the shaft 40 on its pivot bolt 39, for moving the friction disc 43 into and out of engagement with the friction disc 34, and the lower end of the hand lever is pivotally connected, as at 45, to a bracket 46. The extreme lower end of the hand lever 44 has pivotally connected thereto an operating link 48 which has its opposite end pivotally connected to an adjusting lever 49. The adjusting lever 49 is pivotally secured adjacent-t0 its upper end on a pivot pin 50 which is adapted to be inserted in any one of a plurality of apertures 51 formed in a supporting portion 52 of the bracket 36 and i this manner, the position of shaft 40 may be located according to the size of disc 43. The upper end of the adjustin lever 49, above the pivot pin 50, is forke as at 53, and receives the shaft 40. One of the ion itudinally extending beams 20 is provid with an auxiliary frame 55 which supports a brake shoe 56. The brake shoe 56 is provided with an attachin foot. 57 whereby the same is secured to t e auxiliary frame 55, and an arcuate body which conforms to the curveture of the friction disc 43. A relatively stron coil spring 58 is secured to the lever 49 adjacent ,to its lower end and to one of the beams 20 and normally tends to move the shaft in the direction of the brake shoe 56, so that the friction disc 43 will engage the shaft and thus prevent accidental rotation thereof.

The transmision mechanism may be connected as by means 62 for operating other mechanism, such as a concrete mixer D. The counter shaft 30 will be operated through the medium of the sprocket wheels 32 and 31, and the sprocket chain 33, and when it is desired to rotate the drum 41 the hand lever 44 is shifted so that the friction disc 43 will be moved into engagement with the friction disc 34, which will effectively rotate the drum 41. When .itis desired to hold the drum 41 at any desired point it is merely necessary to release the lever and the relatively strong contractile spring 58 will move thh friction disc 43 into engagement with the brake shoe 56. The speed of rotation of drum 41 may be regulated by hear ing lightly on the lever or by bearing hard on the lever or thespeed of rotation of the prime mover itself may be adjusted.

From the foregoing description it can be seen that an improved hoisting attachment is Provided which is exceptionally simple and durable in construction and which can be readily operated by the ordinary skilled mechanic.

Changes in details may be made without departing from the spirit or scope of the invention; but,

I claim:

1. A hoisting mechanism comprising a supporting frame, a bracket carried by said supporting frame having a slot therein, a, member connected to said bracket providing a slot therein in aligning relation with the slot of said bracket, a shaft having one end thereof provided with an opening therethrough, a bolt connected through said shaft opening and extending through the aligning slots of said bracket and member, a nut for clamping said bolt in a determined relation along the aligning slots whereby the shaft may be pivotally connected between tne acaet and the member, a dr-iv.- ing mechanism including a drive wheel, a drum rotatably carried by the shaft remote from its pivotal connection, a drivenwheel aflixed to said dr m, and means for moving the shaft upon its pivot whereby the driven wheel may be moved into engagement with the drive wheel.

2. A hoisting mechanism comprising a supporting construction including a pair of spaced brackets, a shaft, driving means including a drive disc, means adjustably pivoting one end of the shaft to one bracket whereby the shaft may have the pivot axis thereof moved away from or toward the drive disc, the shaft. remote from the bracket to which it is pivoted slidably rest.

ing upon the other bracket, operatin means including a lever adjustably pivoted to the bracket on which said shaft is slidably mounted, the pivotal mounting of said lever being capable of being moved away from ortoward the drive disc, said lever at an end thereof receiving the shaft in bearing roletion therein whereby upon movement of the lever the shaft may be pivotally moved, a drum rotatably carried by said shaft,.and a wheel fixed to said drum adapted to 511-. gage or disengage the drive disc of said driving means according to the direction of movement of said shaft.

JAMES B. MCQUEEN.

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