US1468131A - Snap hook - Google Patents

Description

Sept. 18,1923.

S. F. BASHARA SNAP HOOK Filed Feb. '7. 1921 raieaiease i. 18, 1923.

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SAMUEL r. BASHARA, or HOUSTON, TEXAS.

SNAP HOOK.

Application filed February 7, 1921. Serial No. 443,136.

To all 'whom it mag concern: V v

Be it known that I, SAMUEL F. BASHARA, a; citizen of the United States, residing at Houston, inthe-county of Harris and State of Texas, have invented certain new and useful Improvements in Snap Hooks, of which the following'is aqspeciiication.

This invention relates to new and useful improvements in a snap hook for well drilling apparatus. i

One object of the invention resides in an improved form of Shock, through which the block-and-tackle, suspended from the crown-block, may be quickly connected to, and disconnected from, the swivel which is attached to the upper end of the grief stem. With the above and othenobjects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein z-r- Figure 1 is a'fragmentary side elevation of a well drilling device, partially in section, showing my improved apparatus embodied therein. Figure 2 shows a side view of the C-hook employed, and Figure 3 showsa plan view thereof.

. Referring now more particularly to the drawings, the numeral 1 designates the derrick, the numeral 2 designates the well casing and the numeral 3 refers to the drill stem. The casing is shown with an outlet l at its upper end. In drilling there is a swivel 5 connected to the upper end of the stem and this swivel is suspended from the derrick crownblock (not shown) through they in strun'ientality of the cable 6, the block-andtackle 7 and the Chook '8. A. pump 9 is connected to the swivel through the hose 10 and by it water or slush is forced, under pressure, down through the stem.

. The Chook employed is shown in Figures 2 and 3 and embodies an open oblong ring 17, to one end of whichthe link 18 is pivoted. The other end of the ring 17 is formed with a shoulder 19 and the adjacent end of the link 18 is correspondingly shouldered to fit therewith.

This end of the ring has a pivoted latch 20 which is adapted to engage a catch 21 carried by the adjacent end of the link 18. Hooks of this character now in common use have the connecting link bolted to the hook at each end and it is a laborious task to release them from the swivel and the operation consumes much time. The hook herein described can be quickly applied and released and much time and labor thereby saved.

The latch 20 is prevented from accidental disengagement in the catch 21 by means of a suitable spring. A fiat spring 22 is shown secured to the adjacent end of the ring 17 and resting against the outer side of the link. However, any type of spring found most practical may be employed.

lVhat I claim is A snap hook including an open ring, a link pivoted at one end to one end of said ring, a catch carried by the other end of said link, the other end of the ring being formed with a shoulder, and the free end of the link being also formed with a shoulder, said shoulders abutting when the link is in closed position, a U-shaped latch pivoted to the shouldered end of the link and engaging over said catch when the link is in closed position, and a spring operating against the latch and tending to hold the same in engaging position over said catch. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL F. BASHAB-A. Witnesses:

. E. V. HARDWAY,

WM. A. CATHEY.

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