US1217457A - Hoist. - Google Patents

Description

G. A. JORDAN.

HOIST.

APPLICATION man FEB. 18. 1914.

Patented Feb. 27, 1917.

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' TIN" GEORGE A. JORDAN, OF BROOKLY N N YORK, ASSIGNOR OF ONE-THIRD T WILLIAM H. JORDAN AND, ONE-THIRD TO CHRISTOPHER 0. JORDAN, BOTH OF BROOKLYN,

NEW: YORK.

HOIST.

Patented Feb. 27, 1917.

Application filed February 18, 1914. Serial No. 819,324.

To all whom it may concern:

Be it known that I, Gnonen A. JORDAN,

a citizen of the'United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New'York, have invented a certain new and useful Improvement in Hoists, of which the following is a specification. v

This inventionrelates to that type of ap paratus forming the subject-matter of my Patent 987,885, dated March 28, 1911.

The objects of the present invention are, first, to improve the supporting means for those shaft boxes which are in the yoke farther from the rope pinching pulleys; second, to improve the devices for moving that one of the shaft boxes whiclrslides in the yoke adjacent to the rope pinching pulleys; and third, to provide a means for rendering immovable either of the boxes in the same yoke and at the same time render the shaft moving devices interchangeable, so that either box can be moved, as desired.

These and further objects will more fully appear from the following specification and accompanying drawings,considered together or separately.

I have illustrated my invention in themcompanying drawings, in which similar reference characters designate corresponding parts in all of the figures, and in which:

Figure 1 is a plan view partly in section.

Fig. 2 is a side elevation of the same partly in section.

line 33 of Fig. 1.

Fig. 4 is a detail sectional view taken on the line 44 of Fig. 3; and

Fig. 5 is an end view ofthe device with the belt pulley removed.-

Fig. 6 is a detail view of a modification. Referring to the drawings, a rope 1, which leads to the mechanism which is to be operated, is moved through the inter-me diary of the hoist by means of power applied to a pulley 2. The rope is adapted to be pinched, when it is to be moved, by

the grooved pulleys 3 and 4. These pulleys 3 and 4c are carried respectively upon the shafts 5 and 6. These shafts are supported in boxes 7, 8, 9 and 10. The boxes 7 and 8 are carried in the yoke 11, while the boxes 9 and 10 are carried in a yoke 12. The shafts 5 and 6 carry spur-gears 13 and 14-. These spur-gears intermesh, and by means Fig. 3 is a transverse section taken on the of them movement is transmitted from the shaft 5 to the shaft 6, but in the opposite direction, and the pulleys 3 and 4 are also operated in opposite directions. -To move the rope, the shafts are disalined to a suf ficient extentto bring the two pullevs 3 and a into contact with the rope. This will not affect the proper engagement of the gears 13 and 14, for the reason that they are at the'otherend of the shafts, and do not appreciably move. The means for supporting the boxes 7 and 8 are as follows:

The yoke 11 has two rectangular openings, as shown. Each box has at its bottom two ears 15, said ears being adapted to straddle a horizontal-member of the yoke, each box lying in an opening, .as shown in Fig. 5. At the ,top of the box is a lug 16, adapted to hold the box seated, and at the sides of the box are ears .17, 17, adapted to center the box. Each box is easily introduced into place within the opening in the yoke, by inserting it before. the shaft is put into position. The box is introduced at an angle, so thatthe ears 15, 15, will straddle the yoke. Then the box is moved to the position that it will finally occupy, and is held in place by hand until the shaft is introduced, whereupon the shaft will permaopening having flat top and bottom surfaces 18, 18. Each box is provided withears 19 at the top and bottom, adapted to straddle these flat surfaces, The lower flat surface is provided with a-notch 20, see Fig. 3. By this means, either box, when threaded upon its shaft, can be introduced in place at the notch 20, and then moved tothe final position it will assume, as shown in Fig. 3.

For the purpose of moving. one or the other of the boxes 9 or 10 to disaline the shafts, andforce the pulleys 3 and 4 into engagement with therope, each end of the yoke is formed with a nut or screw-threaded opening 21. Inthis nut turns a screw 22. Each screw is connected to a plate 23, which in turn is connected to the box. The screw is provided with a head 24. A portion of the screw between the thread and the head is reduced, as shown in Fig. l, and engages within a notch in the plate 23, as shown. For the purpose of rotating the screw, it is provided with a lever or arm 25. Suitable means for, moving the lever or arm may be the rope 26, illustrated in Fig. 2. A counterweight 27 will depress it. The arm is adapted to be attached to either one of the screws, by means of the set screw illustrated. The screw to which it is not attached, is locked in position by means of a set screw 28. Each nut is provided with a threaded opening, so that the set screw can be used in connection with either nut. It is, therefore, possible to very readily shift the operating mechanism from one side to the other of the hoist, and through the agency of the set screw 28 to lock the other block in position. The mechanism above described for moving the box, and thereby bringing the two pulleys 3 and 4 into engagement and pinching the rope 1, is very simple and efficient. TVhen power is applied to the. rope 26 the arm 25 will be raised and the screw 21 rotated in the clockwise direction thus moving the box 10 toward the box 9 and gripping the cable 1 between the pulleys 3 and l. When the rope is released the weight 27 will lower the arm, the screw will be rotated in the counter-clockwise direction and the box 9 will be automatically moved to release the cable.

In the modification illustrated in Fig. 6 is shown a bolt 29 in use instead of the screw 22 for holding the end of the non-adjustable shaft. lhis bolt is provided with shoulders 30 for engagement with the sides of the slotted plate'23 on that side of the apparatus. The bolt is provided with a nut for securing it in position. It will be understood that when the bolt 29 is used, the set screw 28 and the tapped openings for its insertion in the nuts '2121 will be dispensed with.

In the embodiment illustrated in Fig. l, the screw 22 will engage the box 10 and the bolt 29 will hold the box 9 in place, but the positions of the screw and bolt may be reversed when desired.

In accordance with the provisions of the patent statutes, '1 have. described. the principle of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but desire to have it understood that the apparatus shown is merely illustrative and. that the invention may be carried. out in other ways.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

A hoist which comprises two parallel shafts, grooved pulleys at one end of said shafts adapted to grip a rope between them, bearing boxes for saidshafts, two yokes supporting the boxes, the boxes on the yoke adjacent to the pulleys being slidably mounted in the yoke, the boxes farther from the pulleys each having ears at its. bottom straddling the yoke, a lug at the topadapted to engage the yoke and prevent raising of the box to such an extent as to raise the ears clear of the yoke, and ears at its sides to prevent sidewise movement of the boxes within the yokes.

This specification signed and witnessed this lGth day of February, 1914.

GEORGE A. JORDAN.

Witnesses:

J. F. COLEMAN, .ANNA E. BENTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Pat nts.

' Viashington, D. G.

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