US1747128A

US1747128A - Tubing hook

Info

Publication number: US1747128A
Application number: US265450A
Authority: US
Inventors: Walter A O'bannon
Original assignee: WALTER O BANNON CO
Current assignee: WALTER O BANNON CO
Priority date: 1928-03-28
Filing date: 1928-03-28
Publication date: 1930-02-11
Anticipated expiration: 1947-02-11

Description

Feb. 11, 1930.

W. A. O BANNON TUBING HOOK Filed March 28. 1928 gwuento'o 71.02am? J 3 w a z z I. 2 i 5! z 7 M 1 m. (A 3 w I, W \V W II I, 3. MM 0: #1 a Wm "H a I w W fi G w w v Y T m a Patented Feb. 11, 1930 UNITED STAT-5E5 PATENT orricr.

WALTER A. OBANNCN, OF TULSA, OKLAHOMA, ASSIGNOR T0 WALTER OBANNON (30., I A CORE'ORATION OF OKLAHOMA l TUBING HOOK Application filed March 28, 1928. I Serial No. 265,450.

This invent-ion relates to a tubing hook and particularly to improvements upon the construction shown in my Patent No 1,582,845 dated April 27, 1926, and these improvements relate especially to the structure and assemblage of the latch or detent member and the control lever therefor.

The improvements contemplate a direct connection between the handle lever and latch by which increased leverage may be applied to a tail or extension upon the latch which results in an accelerated movement thereof and subsequent continued travel of the latch during its opening period. This movement has been accomplished most effectively by a pin and slot connection between the lever and latch in which the pin traverses an arc outwardly of the lever pivot and engages the curved wall of the slot therein. Another element of structure contributing to the increased leverage is the disposition of the pivotal connection of an extended operating arm with the latch at a point spaced a material distance from the latch pivot. An

advantage is thus secured of a limited movement of the hand lever for transmitting a greater degree of travel to the latch in order to swing the same fully within the body of the hook.

The improvements also include a location of the hand lever within a channel extending rearwardly from the latch pivot and the ap plication of a handhold at the rear of the hook substantially aligned with the entrance opening thereto. Such a disposition of the lever within the body fully protects the same under all conditions of use while the exposed handheld is protected by guard extended outwardly from the body beneath the same.

The invention has for an object to provide a novel and improved construction of supporting hook comprising a hook body having a latch disposed to close the entrance thereto and pivoted intermediate its ends to provide the tail portion in connection with an operating handle pivoted upon the body and having a movable connection with the latch tail oisposed at a distance from the latch pivot.

Another object of the invention is to provide a hook body having a pivoted latch to close the entrance thereto, an operating lever pivoted upon the body and having a pinand slot connection with the latch and a hand device carried by the operating lever and disposed at the rear of the hook in substantial alignment with entrance thereto.

A further object of the invention is to provide a novel construction of a control mem-' her having an operating handle at its rear and disposed within a channel at the upper portion of the hook body, together with a latch pivoted at the frontofthe channel for closing the entrance to the'body and con nected to said control member.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

- In the drawing:

Figure 1 is an elevation of the hook with parts in section; and I I Figure 2 is a detailed section on line 22 of Figure 1, with the latch omitted. I

Like numerals refer to like parts in the figures of the drawing.

The numeral 10 designates a hook which may be of any conventional size or configuration suitable for the work to be performed, the present invention being especially designed for the manipulation of well tubing. This hook is provided with a shank 11 carrying a swivel mounting 12 from which a bail 13 is extended. The swivel is retained in position by the usual nut 14 and ball bearings 15. The hook body is formed with the usual bill 16 forming an eye 17 and an entrance passage thereto adapted to receive the mem her to be connected to the hook.

The upper portion of the hook is formed its free end to form a lever or tail 24 formed with a curved slot adapted to receive the pin 26 carried by the forward end of the hand lever or arm 27.

This lever 27 is entirely enclosed within the channel and pivoted at 28 adjacent the handhold 29 which is disposed at the rear of the body opposite the eye 17 thereof. The lever 27 may be tensioned outwardly from the body by any desired means, a preferred form comprising the sliding pin 30 mounted in the lever and having a head 38 'sl'idingly engaging the lower wall of the channel-18 above the recess 3a. This pin is tensioned toward this wall by a spring 31 which surrounds a stud 39 from the lever and bears against the pin-head 38. The mounting of the spring causes it to always remain perpenposition of ;F igure 1 is disposed at substantially a right angle to the end of the slot in the tail of the latch and therefore acts to lock the latch in itsposition to close the entrance to the eye. An inward swing of the lever bya vertical movement of'the handhold causes the pinto ride upon the curved faceof the slot 25 in anarc extended outwardly about the pivot of the latch and produces an accelerated initial movement and a continued travel of the latch untilthe tail thereof lies within the end recess '32 of the channel when the-pin 26 being at the-opposite end of the slot 25 locksthe parts with the latch withdrawn from the entrance to the hook. The latch is thus locked in its opposite positions by the cooperation of its lever extension with the opera-ting lever.

this time the finger 33 of the latch is seated within the recess -34 and may engage the inner wall thereofso-as tocom'pletely remove thelatch from the entrance to the eye and permit a -sliding travel of the upper wall of such entrance in contact with the means to be engaged.

Inthe downward vertical movement of the hookincident to its use there is a constant liability that the end of the control lever will engage anadjacent'object-a-nd be accidentally operated to :release the latch, more particularly when this lever is disposed at the rear ofthe hook opposite the eye therein.

To prevent such accidental operation'the inner edge of the handhold 29 :isfdisposed within circumferential recess 35 ;of the body and extending outward-from this-recess and beneath the handhold is a [guardlug 36 the jimder face of which'is curved outwardly so; as to guide therefromany object with which it may contact. This arrangement of the control lever and its handle ;is

- of material practical importance as it ohviates the necessity of the operator handling the lever from a position adjacent the entrance to the hook where his hand is exposed to injury from contact with abutting objects. It has also been found that much more effective operation of the latch can be secured by a direct pull upon the handhold than by a compressive action of the lever, and this handhold after closing the latch acts as means for manipulating the hook. The operation of the invention will be apparent in the foregoing description from which it will be apparent that the pivotal mounting-of the latch control lever provides for the maximum travel of the latch in a minimum movement of the lever andalso applies the power to the latch so as to secure an increase of leverage which is of particular importance in a device of this type where the parts are of material weight and a quick and easy operation of the movable members is desirable.

The latch structure itself embodies novelty in the provision of the slotted tail in cooperative relation with the pin of the hand lever so as to provide an accelerated movement and a travel of the pin in an are outwardly from the latch pivot and a material distance therefrom sufficient to secure a leverage at the tail of the-latch.

lVhile the specific details of the construction have been shown and described the invention is-not confined thereto as changesand alterations may be made without departing from the spirit of the invention as defined by the following claims.

What I claim is:

1'. A supporting hook comprising a hook body, a latch disposed at the; entrance tosaid body and pivoted intermediate its ends to provide a tail portion and a finger to close said entrance, and an operating handle pivoted upon the body and having a pivotal connection with the latch tail disposed to lock the finger in closed position and actuate it into open position.

2. A supporting hook comprising a hook body, a latch disposed at the entrance to said body and pivoted intermediate its ends to provide a tail portion and a-finger to close said entrance, and an operating handle pivoted upon the body intermediate its ends and having a forward membermovably connected with the latchft ail andtraversing an are forwardly of and toward and from said latch Pi 3. A supporting hook comprising a hook body, a latch. disposed to close the entrance to said body and pivoted intermediate its ends to provide aninwardextension and an outward finger,-an operatinglever pivoted upon the body at the rear of the latch pivot, and a pivotal connection between the said lever and latch extension disposed at one side of a plane extending through the latch and-lever pivots, said pivotal connection locking said latch in one position.

4. A supporting hook comprising a hook body, a latch disposed to close the entrance to said body and pivoted intermediate its ends to provide an inward extension and an outward finger, an operating lever pivoted upon the body at the rear of the latch pivot and in alignment therewith, and a pivotal c011- nection of the said lever and latch extension disposed at one side of a plane extending through the latch and lever pivots, said pivotal connection comprising a relatively movable pin and slot.

5. A supporting hook comprising a hook body, a latch disposed to close the entrance to said body and pivoted intermediate its ends to provide an inward extension and an outward finger, an operating lever pivoted upon the body at the rear of the'latch pivot and in alignment therewith, a pivotal connection of the said lever and latch extension disposed at one side of a plane extending through the latch and lever pivots, and a handhold for said lever disposed at the rear of the body.

6. A supporting hook comprising a hook body, a latch disposed to close the entrance to said body and pivoted thereon intermediate its ends to provide an inner slotted tail having curved walls and an outwardly extending finger, and an operating lever pro vided with a pin disposed to engage the wall of said slotted tail.

7. A supporting hook comprising a hook body having a rearwarclly extending channel at its upper portion, a latch member pivoted at the forward portion of said channel, and an operating lever enclosed within the channel and pivoted at the rear thereof and to the latch member, said lever having an integral handhold extending outwardly of the channel at the rear of the body.

8. A supporting hook comprising a body having an eye and entrance thereto at one side and a rearwardly extending channel at its front, a latch pivoted in said channel at said entrance to the eye, an operating lever disposed within the channel and connected to said latch at a point above its pivot whereby said latch may be positively shifted to and fro by said lever, and a handholdvfor said lever disposed at the rear of the hook substantially opposite said eye.

9. A supporting hook comprising a hook body having an eye and entrance thereto at one side and a rearwardly extending channel at its front, a latch pivoted in said channel at said entrance to the eye, an operating lever disposed within the channel and connected to said latch, a handhold for said lever disposed at the rear of the hook substantially opposite said eye, and a guard extended from the body of the hook beneath said handhold.

10. A supporting hook comprising a hook body havingan eye and entrance thereto, a latch pivoted at said entrance and having a finger for closing the same and a lever extension at the opposite side of its pivot, a rearwardly extending operating member pivoted upon the body, and a relatively movable connection between said member and lever extension to move the finger lnto either open or means, and a tensioning means for said lever disposed to slide upon the body of the hook in the movement of the lever to withdraw the hook controlling means.

13. A supporting hook comprising a hook body, means disposed to control the entrance to said body, an operating lever for said means, a sliding pin mounted in said lever and having its free end engaging the body of the hook, and a tensioning spring disposed intermediate said lever and a head at the free end of the pin.

In testimony whereof I aflix my signature.

WALTER A. OBANNON.