US689090A - Block. - Google Patents

Description

' Patented Dec. I7, I90.

L. W. JOHNSON. I

BLOCK.

(Application filed Apr. 28, 1901.)

(No Mode-l.)

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Ni'rn TATES ATENT rains.

LAFAYETTE \V. JOHNSON, OF JEROME, ARIZONA TERRITORY, ASSIGNOR OF ONE-THIRD TO FRANK O. CLARK, OF JEROME, ARIZONA TERRITORY.

BLOCK.

SPECIFICATION forming part of Letters Patent No. 689,090, dated December 17, 1901.

Application filed April 23, 1901. Serial No. 57,146. (No model.)

T0 ail whom it may concern:

Be it known that LLAFAYETTE W. JOHNSON, a citizen of the United States, and a resident of Jerome, in the county of Yavapai and Territory ofArizona,have invented a new and Improved Block, of which the following is a full, clear, and exact description.

This invention relates to a block of that class known as snatch-blocks, in which parts of the framing or shell of the block are movable to permit a rope to be engaged with the sheave without necessitatingreeving the rope through the block.

To this end the invention comprises a block with a swivel-eye, serving not only to sustain the block, but also removably to engage the straps or other rigid portions of the structure of the block, so as to hold the rope properly in the sheaves.

This specification is a specific description of one form of the invention,while the claims are definitions of the actual scope thereof.

Reference is to he had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is an elevation of the invention, partly broken away and in section. Fig. 2 is a cross-section on the line 2 2 of Fig. 1, and Fig. 3 is a sectional plan view of the device.

a represents the sheaves of the block, which are here shown to be four in number. Obviously the block may be constructed with any number of sheaves desired. The shell or framing of the block is made up of a number of sections 1), which are equivalent to the cheek-sections of the usual block, such sections I) being rigidly connected together by spacing-blocks 0, arranged at their lower end and held in place by tie-bolts (Lpassin g through the spacing-blocks. The sections 1) have bosses b thereon, these bosses matching together to form journals for the sheaves a. Passing through these bosses b is a tie-bolt e, which holds together the. various parts. The block has a central section f, held to the sections 1) by the tie-bolt c and formed with a socket f, in which is fitted'a stud g,- extending vertically above the block and having a flange or cap 9 at its upper end.

7t indicates the eye before referred to, this being triangular in general contour and being mounted upon the stud g. Theeye h has notches h therein at the point which receives the stud g, and these notches receive corresponding ribs 9 on the stud. The ribs 9 are arranged at the upper part of the stud, so that when the eye h is drawn upward, as shown by full lines in Figs. 1 and 2, the parts h and g are locked together and the eye is incapable of turning on the stud. The eye is held in this elevated position by means of a cotter-pin or other locking device 2', which is passed through the stud g and which is removable to release the eye it. By releasing the pin 1' and dropping the eye 72, to the position shown by dotted lines in Fig. l the eye may be given a quarter-turn, causing it to assume the position indicated by dotted lines in Fig. 3. The upper ends of the sections 1) of the block are formed with hooks b These hooks are arranged oppositely at each side of the stud g-that is to say, the hooks b at one side of the stud are extended oppositely to the hooks on the other side. When the eye It is raised, as shown in Fig. 1, it is engaged with the hooks b and being held by the pin 1 it cannot turn. If it be desired to engage a rope with or disengage it from the block, the pin 7; should be released. This will permit the eye 71 to drop, .and then it may be turned sidewise, so as to disengage it from the hooks b By this arrangement it will be seen that upon a very simple movement of the parts of the block the sheaves are exposed, so that they may receive the rope or be disengaged therefrom at will. 7 In this connection it should be observed that the lower part of the eye It forms practically a lock-bar, which in moving to and from its normal position closes or opens the block. It is not positively essential that the block be suspended from this lock-bar, since a becket or shackle may be attached to the block at any other point and the part 71 employed merely as a swinging lock-bar for covering or uncovering the sheaves of the block.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A block, comprising a body portion having a stud provided with a rib thereon and ICO also having an upwardly-projected hook, it lock-bar mounted to swing'on the stud and capable of engaging the rib, whereby the swinging movement of the lock-bar is pre- 1 Vented, means for holding the lock-bar in engagement with the rib, and a sheave mounted in the body of the block.

2. A block, comprising a body portion provided with a stud, and oppositely-disposed hooks arranged at opposite sides of the stud, sheaves mounted in the block at opposite sides of the stud, and an eye, part of which forms a lock-bar, said part being pivoted on the stud intermediate the ends of the lockbar and movably engaging the hooks, for the 15 purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LAFAYETTE W. JOHNSON.

Witnesses:

E. J. PARKINSON, N. D. Ross.

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