US548915A - Tackle-block - Google Patents

Description

(No Model.)

H. V. HARTZ. TAGKLE BLK.

Patented out. '29, 1895.

A-r-rm-aNY UNITED STATES PATENT price.

Y HENRY V. HARTZ, OF CLEVELAND, OHIO.

TAoKLE-BLOGK.

SPECIFICATION forming part of Letters Patent No. 548,915, dated October 29, 1895.

Application filed April 5, 1895. Serial No. 544,521- (No model.)

To @ZZ whom it may concern,.-

Beit known that I, HENRY V. HARTZ, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Tackle-Blocks and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to tackle-blocks; and the invention consists in a tackle-block constructed and arranged substantially as shown and described, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of my improved tackle-block in which a single sheave is used; and Fig. 2 is a vertical central sectional elevation thereof on line frac, Fig. l. Fig. 3 isa detail of the brace used in the single block as seen in Figs. l and 2. Fig. 4 is a cross-section on line yy, Fig. 1, showing the shape of the cheek-pieces on that line. Fig. 5 is a cross-section of one of the cheek-pieces on line z z, Fig. 1. Fig. 6 is an elevation of a double block, as hereinafter more fully described; and Fig. 7 is a detail of one of the angle-braces therein, two being used. Fig. 8 is a view of the top portion of a modified form of double block in which the middle partition-plate does not extend through to the top of the block and is engaged at its top between the flat bent sides of the brace-piece, as hereinafter described.

It will be noticedas a novel feature of this construction of block that it entirely dispenses with straps or other parts at its sides which have always heretofore been depended upon to provide bearings for the sheave and connections for the hook, and that in this case the hook is directly engaged in the cheek-pieces, as is also the sheave or sheaves, and there is no other connection or support whatsoever. To accomplish this construction and the obvious cheapening and simplification of the block, it has necessitated a peculiar formation of the cheek-pieces, each of which is designed to be strong enough to serve the purpose of the cheek-pieces and straps combined in the old construction. To this end I have fashioned the said cheek-pieces A, Figs. 1 and 2, with a short or rather sharply-curved flange 2 all around its edge, said flange extending outward and from end to end of the cheekpiece, losing itselfat the inwardly-curved excheek-pieces, it will be noticed that they are Vstruck up with an outward swell across their 6o center, inclining in both directions laterally toward the channel or depression 6 at the base of said flange 2. This, with the iianges, serves to make them both rigid and strong and enables me to dispense with the usual side straps.

The upper ends of the cheek-pieces are riveted together by a rivet 7 corresponding to the rivet 4 below, and at the point where they approach the rivets they are drawn together and curved and rounded on the inside and of 7o such size in cross-section as to be especially adapted to the eye 9 of the hook B, aifording the said hook all the room it needs for every variety of service. By the side of the hook is also engaged the reinforcing-link C, as clearly seen in Figs. l and 2. It will be noticed as a feature of this association of link and hook that the pull comes off the immediate center of the block and on the short curves or bends in the neck, as seen in Fig. 2, thus partially 8o relieving tendency to collapse the sides.

The immediate centers of the cheekpieces have each depressions with central holes for shaft or spindle D of the sheave E, in which said shaft is made rigid. This depression of 8 5 ing-pieces 12, placed in the recesses and bear- 9o ing upon the edges thereof. This reinforcement is not absolutely necessary, but pro- -motes strength of the parts for heavy work.

A further element of strength and service is the cross-brace D', Fig. 3, which has slight 95 projections or tongues at its ends engaging in corresponding slots in the cheek-pieces, and serves to keep the cheek-pieces spread at that point and prevent the tendency to draw `together under excessive and unusual strain. :oo

In Fig. 7 l show an angle-piece H, provided with a tongue 13 at one end toengage a slot in the cheek-piece and a hole in the other end to be engaged by the rivet 14, which binds the both ends by the rivets 14 and 15 therewith.

The cheek-pieces and the braces and the hook and link are in all casesput together before riveting occurs; butv the sheave and shaft may be put in place afterward. Thel eye of the hook and the link are threaded through by the cheek-pieces and retain their A position permanently therein.

l link and have so shown it.

An important distinguishing and novel feature of this construction of tackle-block over any other hitherto known to me is the dispensing with the usual becket and thimble or eye to which the rope or cable is attached at the end opposite the hook. I use pieces so fashioned and rounded, as shown and described, that they are adapted to have the rope or cable attached thereto without any interposed mechanism whatsoever and with all the security and durability that any of the old constructions have afforded. This works economy to the manufacturer and the consumer and makes an exceedingly satisfactory and practical way of connecting the rope.

If preferred, the link C may be dispensed with and the construction will be complete without it; but I prefer the block with said If not used, the double block would be modified, as shown in and the brace-piece S has a loop at its center engaged by the edge of the hook. In Figs. 1 3 and 2 there would be no change of construction, but omission of the link.

What I claim is- 1. A tackle block formed of sheet metal riveted together at their extremities, and a vhook threaded through its eye into the eX- tremities of said cheek pieces, substantially as set forth.

2. The block described having metallic cheek pieces with their ends turned inward on curved lines and rounded on the inside of the bent portion to form a bearing for the hook and riveted together at their extremities, and the hook threaded through by said ends, substantially as set forth.

3. The block described having stamped up metallic cheek pieces provided with perforations at about their center-and shouldered depressions about the said perforations on their outer side, in combination with perforated reinforcing pieces in said depressions, and the sheave spindle headed on the outside of said reinforcing pieces, substantially as set forth. nothing of this kind, but have the check- 4. A tackle block having cheek pieces bent inward and riveted together at their ends, a hook threaded into the said cheek pieces and ya separate brace piece set between the said Qcheek pieces at the hook end of the block,

substantially as set forth.

5. The block described, comprising cheek pieces struck up from plate metal and having l the ends of each piece narrowed and rounded on the inside and bent inward together and rivets connecting the said ends, whereby a rounded surface is formed at one end of the block for the hook and at the other end forl the rope, in combination with the hook and i the rope, substantilly as set forth.

Fig. 8, in which the middle plate R stops short tion this 28th day of March, 1895.

Witness my hand to the foregoing specifica.

HENRY V. HARTZ. Witnesses:

I-I. T. FISHER, R. B. MOSER.

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