US3156448A - Cotton mill hoist - Google Patents

Description

Nov. 10, 1964 N. P. REAVIS Q 3,

COTTON MILL HOIST Filed Dec. 51, 1962 IN VENTOR.

I6 MRREAM United States Patent 3,156,448 COTTON MILL HOIST Notley P. Reavis, 812 E. Reeves St., Salisbury, NC. Filed Dec. 31, 1962, Ser. No. 248,659 2 Claims. (Cl. 2547) The present invention relates to lifting devices, and more particularly to cranes and hoists employed in cotton mills to deliver lickren drums to cotton processing machines.

The primary object of the present invention is the provision of a portable hoist which may be inexpensive to manufacture, simple and safe to operate.

Another object of this invention is the provision of a lifting device made entirely out of tubing sections welded together.

A further object of this invention is the provision of wheels to facilitate moving the hoists close to the cotton processing machines.

An additional object of this invention is to provide simple yet effective locking means to lock the lifting mechanism of the hoist in an inoperative position when not in use.

This invention also consists in certain other features of construction and the combination and arrangement of several parts to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claims.

In describing the invention in detail, references will be had to the accompanying drawing Where like character numerals denote like or corresponding parts throughout the several views in which:

FIG. 1 is a top elevational view of the hoist comprising the present invention;

FIG. 2 is a side elevational view of FIG. 1, showing the lickren drum in phantom lines; and

FIG. 3 is an end elevational view of FIG. 2.

Referring now more particularly to the drawing, the hoist or crane 10, made in accordance with the present invention is shown in FIG. 1 comprising, in combination, a pair of upright tubular frames 11 and 12 formed to resemble a tall triangle having the longer sides 13 and 14 and the shorter or the base 15. Two pairs of wheels 16 and 17, one pair for each frame 11 and 12, are secured to the base as substantially shown.

A vertical tubular supporting member 18 of somewhat greater diameter than the tubular section of which the frames 11 and 12 are formed, is welded to the triangular frames (see FIG. 3). The upright supports 18, at 19 are provided with an internal thread into which may be fitted the threaded upright shafts or studs 20. At 21, the shafts 20 may be provided with a horizontal hearing which receives the elongated shaft 22 mounted to rotate in the bearing 21 and running the entire length of the hoist, from the frame 11 to the frame 12 respectively.

From FIG. 1 it may be seen that the shaft 22 may be provided with a pair of grooved pulleys 23 and 24 which are securely held thereto to turn with the shaft 22 which is rotated by means of the manually operated handle bar 25. A cross stiffener 26 may be provided as substantially shown to hold the frames 11 and 12 at a substantial distance apart. In the event that it may be necessary to lock the shaft 22 in a non-operative position, a pin 26 hanging from a chain 27 may be inserted into a hole 28 in the frame 18 so that it may be interposed in the path of the operating handle 25. Chains or cables 29 and 30 wound upon the grooved pulleys 23 and 24 may be provided to permit raising the cotton drum D to a convenient height above the ground.

It will now be recognized that the operation of the lifting device herein described is so simple that it hardly needs explaining. In actual practice, the drum D is provided with a hole through which a lifting bar B is shoved. At either ends thereof the cable or the lifting chains 29 and 30' are made fast and the operating handle 25 is cranked to lift the drum D to the required height above the ground. The pin 25 is shoved into the hole 28 in the frame 12 to lock the lifting handle 25 in a non-operative position. Finally the hoist is rolled over to the cotton processing machine (not shown).

A careful consideration of the foregoing description in conjunction with the invention as illustrated in the drawing will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty sufficient to clarify the construction of the invention as hereinafter claimed.

Minor changes in shape, size, materials and rearrangement of parts may be resorted to in actual practice so long as no departure is made from the invention claimed.

What I claim as new and desire to protect by Letters Patent in the United States is:

1. A lifting crane of the class described comprising in combination a pair of parallel, tubular side frames mounted on wheels, each of said side frames having a triangular configuration comprised of a horizontal base portion and a pair of upwardly converging side portions, an elongated cross bar extending transversely between a corresponding one of said side portions on each of said side frames to secure said frames to each other, a vertical column in each frame, a thread formed at the uppermost section of each column, a threaded stud fitted in each of said threaded sections, the uppermost section of each said threaded stud having a bearing, an operating shaft mounted in said bearings, said shaft extending the entire length between said side frames, grooved pulleys on said shaft, chains over said pulleys and a handle bar for manual rotation of said shaft.

2. The combination according to claim 1, and means to lock said operating shaft comprising a locking pin, there being a locating hole in the path of said handle bar, said pin being shoved into said hole, to lock said handle in a non-operative position.

References Cited in the file of this patent UNITED STATES PATENTS 331,608 Bishop Dec. 1, 1885 349,502 Jones Sept. 21, 1886 392,139 Beckert Dec. 11, 1888 464,487 Allen -2 Dec. 8, 1891 520,043 Fox May 22, 1894 720,681 Derrig Feb. 17, 1903 1,204,470 Miller Nov. 14, 1916 2,039,464 Troup May 5, 1936 2,754,523 Bruckner et al July 17, 1956 FOREIGN PATENTS 484,063 Italy Aug. 26, 1953

Claims (1)

1. A LIFTING CRANE OF THE CLASS DESCRIBED COMPRISING IN COMBINATION A PAIR OF PARALLEL, TUBULAR SIDE FRAMES MOUNTED ON WHEELS, EACH OF SAID SIDE FRAMES HAVING A TRIANGULAR CONFIGURATION COMPRISED OF A HORIZONTAL BASE PORTION AND A PAIR OF UPWARDLY CONVERGING SIDE PORTIONS, AN ELONGATED CROSS BAR EXTENDING TRANSVERSELY BETWEEN A CORRESPONDING ONE OF SAID SIDE PORTIONS ON EACH OF SAID SIDE FRAMES TO SECURE SAID FRAMES TO EACH OTHER, A VERTICAL COLUMN IN EACH FRAME, A THREAD FORMED AT THE UPPERMOST SECTION OF EACH COLUMN, A THREADED STUD FITTED IN EACH OF SAID THREADED SECTIONS, THE UPPERMOST SECTION OF EACH SAID THREADED STUD HAVING A BEARING, AN OPERATING SHAFT MOUNTED IN SAID BEARINGS, SAID SHAFT EXTENDING THE ENTIRE LENGTH BETWEEN SAID SIDE FRAMES, GROOVED PULLEYS ON SAID SHAFT, CHAINS OVER SAID PULLEYS AND A HANDLE BAR FOR MANUAL ROTATION OF SAID SHAFT.

Images