US1790056A

US1790056A - Safety-hook device

Info

Publication number: US1790056A
Application number: US363278A
Authority: US
Inventors: Joseph F Moody
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-05-15
Filing date: 1929-05-15
Publication date: 1931-01-27
Anticipated expiration: 1948-01-27

Description

Jan. 27, 1931. ,1. F. MOODY SAFETY HOOK DEVICE 2 Filed May 15, 1929 ATTORN EY13 Patented Jan. 27, 1931" JOSEPH F. troonrr or sense, cri erion 2A ifieaose 'si rErY-rrooK nnvion implicationjfiled liay 15,19 5. seriai'nb,

' My invention relates to s'afety 'hooks such asfare use'd in connection with derricks' in the oil fieldsfor engaging the bails of gripping devices, which-carry the tubing, cas ing or drilling apparatus; i I Briefly stated, the invention has for one of itsimore important objects, the provision of a novel and improved device of this character incorporating a" latching device which is capable'of moving in both directions when released, for facilitating the insertion or removal of the bails from the recess of the-device which receives the same. I 1 i i The invention alsoconteniplates a device of this'nature which is very simple in construction, easy to operate," exceptionally strong and durable, and generally-of e ceeding efliciency in practical use) V The invention residesin certain features;

of construction, combination andarrangement of the various parts. and in certain modes of operation, all of which will be readily understood and appreciated by those skilled in the art uponreference to the accompanying drawing in connection with the following detailed description. or

I In the drawing, wherein is illustrated what now appears to be a preferred embediment of the invention Figure 1 is aperspective view of a safety hook incorporating my invention; 7 V

Figure 2 is a longitudinal sectional view and I V Figure 3 is a section on the line 3-3 of Figure 2.

Referring specifically to the drawing in which the same reference characters have been used to designate the same parts in all. views, 1 denotes the shank extending from the body 2. which latter is providedwith two pairs'of opposed ears 4, extending from one edge of thebodv and providing extensions of a slot 5 in such edge which conr lnenccs at the collar (I which separates the shank 1 from the body 2 and increases in depth in the direction of the opposite end of the body to a point slightly beyond the a medial portion of the ears 4. the bottom wall of the slot from this point inclining ontwardly at 5 to the bail receiving recess 7,

'which defined byth'ei' hookedend or ibill 8; Itwill be observed thatt 1e hooked end of the body portion is. offset re arwardly slightly and li rewise thatthe edge walls of he ears t lie in a plane substantially trans verse'to tne axis of the body and inwardly of the end portion of the bill 8;

The cars 3 are relatively'small andere .7

located adjacent the collaror shoulder 6,

their function being through pin 10 to pivot the rear end of the'triggeri or locking nicmber 11, which is located" in and extends oute wardly from the/sloth so as to be readily operable bythe hand. I I r The ears l, as has been intimated are located adjacent thebill' Sand project slightly outwardly of the lend ofsuch bill so as to provide ample bearing for the latchm-ember 13, which is located in the slotla't this point and pivoted on pin extending, through T ears' l. The outer edges of the ears l also prov1de a relatively flat arced bearing surface for the bails in their inovem'entt o and from the hook recess.

The trigger member ll-is relatively long,

as indicated, and its outer fend is relatively widened and-provided with a medial recess portion 11 to provides. shoulder 11" to en-- gage the toe portion or shoulder 13? of the latch inembcradjacent the outer edges of the ears It is to be noted that theshoulders or portions 11, 13 are at one side of the pivot of the latch element, while the shoulders 11", 13 are at the opposite side;

- A spring 16 having an arcuate-end portion 16 to embrace the rear end of the trigger or looking member 11 is located inslot 5 beneath the bottom edge of such trigger to normally urge 'thesaine' outwardly so as tomaintain shoulders 11, 11 in engagement with latch its end;

shoulders 13, 18 The concaved upper surface 12 of extension '11 bearing against convex rear surface of latch 13, of course, hmits the upward movement of trigger 11. The spring 16 is bowed, as indicated, intermediate From the foregoing description taken in connection with the accompanying w drawing the novel features and advantages of m safety hook are believed to be readily apparent. F or instance, when the trigger member 1s pressed inwardly the locking member 1-3 is 1 free to be moved by the bails either inwardly or outwardly. There is nopos'sibility of the latch member bails jamming. Furthermore, theforwardends of the ears 4:, as indicated at l, provide shoulders substantially transverse to the axis of the body 2. Thus, any

pressure of the bails in the hook recess due to relative vertical movement will engage such shoulder 4 rather than 'thelatch 1.3, thus, re-

lieving the same of considerable strength;

7 \Vhile I have described andillustrated'the preferred embodiment'of my invention, it is tobe understood thatathe same is not limited thereto, but a is susceptible of considerable change and modification within the spiritand scope of the subject matter claimed hereinafter.

Having thus describedniy invention, what I claim as new and desire to secure by Letters" member associated with said latching memberand located in saidgroove, said latchand trigger members having cooperatingshoulders on either side of said latch pivot and operable to maintain the; latch in a position to close said recess and'against movement in either direction, said trigger being pivoted to swing inwardly into said groove to clear its shoulders from the latch shoulders so as to permitmovement of the latch in either direcnon;

4. A device of the class described havinga ho'ok recess and a bill for [partially closing said recess,*the wall ofsaid recess'inwardly and opposite to said bill being substantially transversely disposed with respect to the body of the device, a movable latch member adapted to close said recess, the free end of said latch member being free to move in opposite directions beyond the bill toallow access to said recess, and a triggermember normally tending to hold said latch member against movementwhen incl'osedposition.

' 5. A hook having a recess, a latch member for closing said recess, said latch member being movable,botli inwardly and outwardly to uncover said recess and means for locking said latch member against either inward or outwardswinging'movement when in closed position. i

6. A hook having a-recess, a latch member for closing said recess, said latch member be: ing movable both inwardly and outwardly to uncover said recess and spring actuated means for locking said latch member against either inward or outward swinging movement when in closed position.

In testimony whereof I affix mysignature.

JOSEPH F. MOODY.

ment is in effective position serves to prevent movement of the latch member ineither direction beyond said bill.

2. A safety hook of the class described comprising a body portion having a groove open ing from one edge, a trigger member movably located in said groove and confined therein, one end of said body having a hooli recess provided with an upwardly extending bill, a latch element for closing said hook'recess, and said latch element an d'trigger having cooperating shoulders which when the trigger elemcut is in cffectiveposition serves to prevent movemcntof' the latch member in either di 7 recti'on beyond said bill, means in said groove and engaging said trigger member for normally actuating the same to hold the latch in recess closing position.

3. A device of the class described comprising a body having a hook recess at one end and a groove in one edge communicatingwith said recess, a latch member in said groove and pivoted to move in two directions, a trigger