US1203385A - Tackle-block. - Google Patents

Description

T. C. MURN.

TACKLE BLOCK.

APPLICATION FILED IIAYIZ, 1910.

1,208,385. Patented Oct. 31,1916.

. To all whom it may concern:

THOMAS'C. MURN, OF MANHEIM, WEST VIRGINIA.

TACKLE-BLOCK.

Specification of Letters Patent.

Applicatior filed May 2, 1916. Serial No. 94,904.

Be it known that I, THOMAS C. MpRN, a citizen of the United States, residing at Manheim, in the county of Preston and State of WVest Virginia, have invented certain new and useful Improvements in Tackle-Blocks; and I do hereby declare the following to be a full, clear, and exact de scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a tackle block, and the primary object of the invention is to provide an attachment for ordinary tackle blocks, which will prevent the twisting of a load being hoisted through the medium of the block and which is also constructed so that the twist in the rope attached to the block may be permitted to pass therefrom, after which the attachment is locked to prevent further twisting movement of the rope.

With the foregoing and other objects in view this invention consists in such novel features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings and claimed.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters designate like and corresponding parts throughout the several views, and in which Figure 1 is a view of the improved attachment applied to a tackle block, and showing the same in a tree or untwisting position.

Fig. 2 is a view similar to Fig. 1 showing the attachment held rigidly for preventing twisting of the rope. Fig. 3 is a section on the line 33 of Fig. 2, and Fig. 4 is a perspective view of a part of the attachment.

Referring more particularly to the drawing, 1 designates a block of ordinary construction, which includes a body 2 and a pulley 3 carried thereby. The lower end of the block has a substantially H-shaped supporting body 1 attached thereto in any suitable manner, the lower ends of the legs of which are spread with relation to the upper ends of the legs, as clearly shown in Figs. 1 and 2 of the drawings. The cross piece 5 of the H-shaped body 4 is provided with an opening 6, through which the upper end 7 of the shank of an eye member 8 extends. The shank 7 is rotatably mounted in the open- 55 ing 6, and it has an upset or rivet head 9 formed upon its upper end to prevent accidental disconnection between the eye 8 and the cross piece 5. Wear washers 10 and 11 are provided for taking up the wear occasioned by the swiveled or rotary movement of the eye member 8. The main body of the eye member 8 is provided with the centrally dlsposed opening 12 through which the eye 13 of a rope 14 of ordinary construction extends,

Shoulders 15 are formed upon the body of V the eye member 8 for coaction with the head 8 and the wear washers 10 and 11 for limitmg the vertical movement of the eye member with respect to. the cross piece 5 of the H-shaped supporting .hcdy 4:.

The spread, ends of the legs of the H -shaped supporting body are provided with openings 16 which are provided for receiving the shank of a bolt 17. The bolt 17 is inserted through the upper reduced portion 18 of the eye 12 of the eye member 8 and through the opening 16 for preventmg rotary movement of the 'eye member when desired. The bolt 17 will also act as a safety stop in case the riveted head 9 should break. If it is so desired, the device may be used without the employment of the bolt 17 without departing from the spirit of this invention.

lVhen a block and tackle is hung for any of its many uses, the bolt 17 is removed from the opening 16 and from the upper reduced portion 18 of the eye 12, so as to permit the eye member 8 to rotate with respect to the Patented ocean, 1916.

supporting H-shaped member 4 and the body 1 of the block which will permit the rope 14 to untwist. After all of the twist is out of the rope 14, the bolt 17 is inserted through the opening 16 in the upper reduced portion for locking the eye shaped member 8 against rotary movement, which eliminates the twisting of the rope during the hoisting of an article.

In reducing the invention to practice, certain minor features of construction, combination and arrangement of parts may necessitate alterations to which the patentee is entitled provided such alterations are comprehended within the scope of what is claimed.

What is claimed is:

1. The combination with an ordinary tackle block, of a metallic member attached to and extending outwardly from one end of said block, a cross piece carried by said member, an eye member swivelly connected to said cross piece, legs formed upon said member and extending outwardly from said.

cross piece, a bolt detachably carried by said legs and extending through the eye of the eye member for preventing independent rotation of the eye member.

2; The combination with an ordinary tackle block, of a metallic member attached to and extending outwardly from one end of said block, a cross piece carried by said member, an eye member swivelly'connected to said cross'piece, legs formed upon said member and extending 'outwardly'from said cross piece, the eye of said eye member having itsupper portion constricted, a bolt detachably carried by said legs and extending through the constricted portion of the eye member for preventing independent rotation of the eye member and for bracing and supportingthe eye member.

3.' The combination" with an ordinary said legs extending below. said cross pieces and being positionedfup'on opposite sides of" said eye member, a bolt extending through said depending leg portions and through the eye of saideye member for preventingind=- pendent rotation of the eye member.

In testimony whereof I'aflixmy signature in presence of two WlfIlGSSGSi I THOMASqC. MURN,

Witnesses C. J. HOOTON, L. O'. HEATH.

Copies 'of this patent may-be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

Images