US2366636A - Snatch block - Google Patents

Description

Jan. 2, 1945. w.- H. mcKlsslcK IETAL SNATCI-l BLOCK Filed Feb. 3, 1943 3 Sheets-Sheet l i m Q if: x 6

Jan. 2, 1945. w. H. McK s L 2,366,636

' Filed Feb. s, 1945 a Sheets-Sheet 2 w. MCKISSICK Em 2, ,6 6

Jan. 2, 1945.

' SNATCH BLOCK Filed Feb. 3,1943

5 Sheets-Sheet 3 W H. Mc/ffssl o L/. f F4746, J/r, 6

Patented Jan. 2, 1945 UNITED T I R h sNATon Broom, WilliamH. McKi's'sick and JesseeEate-g Jr's, Tulsa, Okla., assignorsi by -mesneassignments: to William HtMcKissick n i Application February 3, 1943,,"SeriaLNo, 414,594; I (Cl. 254-193) 11 "Claims;

This invention-relatesto improvement in snatch blocks and more particularly oimprovements-in snatch blocks 10f,thentypefdisclosed in United States Patent, 1,994,024.- In', that ,patent the becket is so. connected "to the i side plates that the hook when in normal positioncannot swing about ashorizontal axis. This is, adisadvantage which We veliminate in the presentinvention z An object of the invention isto s mount the becket and hook with reference-.- to one another;

that the becket can nothbeiremovedjuntil thehookis detached therefrom; I I a Another objectiisto proyidesnatch blocks ime proved to faci-litateethe stringing or removal .of the cable I With the foregomg obiects.outlined: andtwithi other objects in view which will, appear as the description proceeds, the invention consists in the novel features?- hereinaftervdescrihed in detail, illustrated in a the 1' accompanying drawings 1 and:

more particularly pointedout ,in the. appended: claims. I c t t Inthe drawin s:

of thefianges-tlz in placing the-becketjon on re-; movin itfromithe, tube I I-, andfromFig, 1 it,may be iseenq-thatathe upper 1* portion of the becket. is. provided with an are shaped; bearing surface -;I 8

, which slides on the-tube H betweentthetfianges swivelling pfithes'hookm Fig. 1 is afragnientary side elevation, partly in vertical section. ofttone form; of :snatch. blockinm eluding our. improvements.

' Fig. 2, is a, similanview takennat right an le. to

Fig.1

Fig. 3 isH-a fragmentaryside. elevation partly in. vertical section ,oftanother, iormot the. invem tion and with thei-side plates, innormal position. Fig, 4 is a fragmentary side elevationofi the same but with one side; plate; .displaced relatively to the .otherto facilitate stringing of thecableiv Fig. 5 is. a transverse; vertical sectional View of.

the structure shown in 3.; i

i Fig. i 6 isa View simflalfito; Fig; 5 of. thezuppen p rtion of theblockowith an; addition thereto.

Fig 7 is, a side elevation; OfY StflL another type of;

snatch block and containing a formflof ourzimfer provements.

s 8 is-an; edges view-oi the. block shownin'tFiga:

7, partly in; transverse vertical :section;

Referringgto the flblockflshownrin Figsxr: 1 and; 2,

9 designates :the; sides; FDIZTSidQ plates of a snatch block, between: which there. is journaled a iconventionfiil sheave 10;. Aitubetl I; is positioned horizontally ,betweenthesid'e. plates and provided with end fiangesrlZ which'abut: the: latterz The tube is: provided with an arm l-3 pivotaliy secured at L4 to one of: the Side -*p1ateSr the tubetinnormalaposition a bolt -:extends therethrough andriswsecured to the side plates A becket; I 6,4preferably ofistirrupshape;has an 1 opening. or windows-H ot-asizeitopasszuover one-=55? In: order to secure 1 Inassemblingtthezparts we;- assume that the,

bo1t,l;5 tismremoved andthe arm 13 is; hanging downwardly fromtitsi ,pivotml t, the becket can be readily placed onto; the tube H and then the. tube can. .be raised to the position shownin Fig, 1, and the bolt l5- can be; repiaceda Before elevating the beeketgthemut 22s can; be introduced into the window l1 and-isubsequentlythe shankof the. hook-may,zbescrewedrintdtheinut; i

In thepembodimentof the; invention. illustrated n F s-iiiito 5.iinciusive-,;.the sheave 23:15 journaled between the.sideiplatesdtand; the connecting, means. issuch as ptoual low onezplate to swing about; the/axis,- ofithesheave; indicated in Fig} 4; The tube i 2!. tinathistexampie, isfixedlv secured to. one;

Of; the side-i. plates- 1 Joy enzmsuitable. means such asiweldingkifi, andtanstationerynutil is, secured. I

to. the opposite side ofi thewsameiplate by Wel in 281., Here. alsoithe tube has; ,endi flanges 29 forming a saddle for. theitopportionifl of; the hecket.

3!. When one of the side-nplates isg hswung up? weirdly as indicated in Fig; 11bit; is obvious that the cable roan ibfihifififilitfidl: in. :the groove. of the. sheaves I When vthe-plates; are innormal position;

a Screw 32 Dassesthmuglrtheplates andutube and. I

has, threaded [en agementiwithithemut 2.1.. In this; iormi ofiithee-inventionqa nut .33: is used 11:01 hflldvthfi shankfof that-K343 imswiveiengagem mentjwithithe beckethtw J I With certain types; of -snatch block -as showm iIlzlFifZhfififi member? 3520f Uzi-shaped cross. section may tube pivotaiiy secured-stow the: i axle 36 of" the 59; sheave by -means of nutst3l= having: threaded engag emen-t with; the-ends 0f the axle.- or: the like maybe connected to -the-cross portion of the part 352" In the modification shown in- Figs: 7 and 8, one-* end: oi a =cr0ss bar-J3! is 'hingedly connected to for supporting the hook.

one of the side plates as indicated at 40 and the opposite end of the cross bar is detachably secured to the other plate by means of a bolt 4|. The cross bar forms a saddle for the upper end portion of the becket 42 to rock on. In this structure, like in the others, the shank of the hook 43 is swivelled in the becket andsecured in place by anut 44 or its equivalent.

Manifestly the various snatch blocks disclosed may be made of any suitable material such as metal and each form is constructed to facilitate theplacing of a cable on or removal of a cable from the sheave. In Figs. 1 and 2, this would be accomplished when the bolt I5 is removed and the arm I3 is hanging down. In Figs. 3 to 6 inabout a vertical axis, and a member arranged in the becket and secured to the shank for rotatably supporting the hook.

5. In a snatch block of the type having opposite sides with a sheave journaled between them and in which one of the sides is adapted to turn relatively to the other sidelabout the axis of the sheave, a tube fixedly secured to the inner surface of one of the sides, a nut, a screw extending through the opposite side and the tube and having threaded engagement with said nut, a becket rockab-ly mounted on the tube for movement elusive, this can take place when the parts are in the position shown in Fig. 4, and in Figs. 7 and 8 this can be performed when the bolt 4| is removed changes may be made in the details disclosed without departing from the spirit of the invention as expressed the claims.

.Whatwe claim and desire to secure by Letters Patent is:

1. In a snatch block of the type having opposite sides with a sheave journaled between them, a tube arranged between'the sides, an arm fixed to the tube and pivotally connected to one of the sides to allow the tube to be swung toward and away from a normal position, means extending through the tube and connecting the same to the sides for supporting the tube in normal position, said tube forming a saddle, a becket having its upper portion rockably mounted on the saddle for movement about a horizontal axis, a hook depending from the becket and having a shank swivelled in the bottom portion of the becket for movement about a vertical axis, and a member securedto the shank androtatably arranged in the becket for supporting the hook.

2. In a snatch block of the type having opposite sides with a sheave journaled between them and in which one of the sides is adapted to turn relatively to the other sideabout the axis of the sheave, atube fixedly secured to the inner surface of one of the sides, a nut fixedly secured to the opposite surface of the last mentioned side, a screw extending through the'opposite side and the tube and havingthreadedengagement with said nut, a becket rockab-ly mounted on the tube for movement about a horizontal axis, a hook having a shank swivelled in the becket for movement about a vertical axis, and a member arranged in the becket and secured to the shank 3. A snatch block is claimed in claim 2 in which a-connecting member of substantially U-shapeis operatively connected to thesides by means coaxial with the axis of the sheave. I I

4. In a snatch block of the type having opposit sides with a sheave journaled between them and in which one of the 1 sides is adapted to turn relatively to the other side about the axis of the sheave, atube having an end fixedly secured to one of thesidesand its other end extending toward the other side, threaded means arranged at the first mentioned end of the tube, a screw extending throughone of the sides and tube and havin threaded engagement with said threaded means, a becket rockably mounted on the tube for movement about a horizontal axis, a hook having a shank swivelled in'the becket for movement about a horizontal axis, a hook having a shank swivelled in the becket for-movement about a vertical axis, and a member arranged in the becket and secured to-the shank for supporting the hook.

6. In a snatch block of the type having opposite sides with a sheave journaled between them, a support connecting said sides, said support having-an enlargement at one end thereof; a becket detachably mounted on and, rockably supported by said support for free movement about a horizontal axis, the becket having an aperture therein to receive said support and the aperture being larger at one side than-the other, the larger side of the. aperture being of sufiicient size to permit the becket to slip over said enlargement and the smaller side of the aperture being of insufiicient size to allow the becket to be slipped over said enlargement, a hook depending from the becket and having a shank swiveled in the bottom of the becket for movement about a vertical axis, and, a support element secured to the shank and rotatable in the aperture on the lower portion of the becket, said support element normally preventing the support irom moving into the larger side of the aperture.

7. In a snatch block of the type having opposite sideswith a sheave journaled between them, a tube arranged between the sides, said tube having an enlargement at one end thereof, means connecting the tube to the sides, said tube forming a saddle, a becket having its upper portion rockably mounted on the saddle, said becket having an aperture to receive said tube and the aperture being larger at one side than the other, the larger side of the aperture being of sufficient size to permit the becket to be slipped over the enlargement and the smaller side of the aperture being of in'sufiicient size to allow the becket to be slipped over said enlargement, a hook depending from the becket and having a shank swiveled in the lower portion of the becket for movement about a vertical axis, and a support member in the becket, secured to the shank and rotatably supported by the becket, said support member being arranged in the aperture and normally preventing the tube from entering the larger side of said aperture.

8. In a snatch block of the type having'opposite sides with a sheave journaled between them,

a tube arranged between the sides and having .said flanged end,, a ,hook depending 'from the becket andhaving a shank swiveled in the lower portion, of the becket for movement about a vertical axis, and a member secured to the shank and arranged in the becket for rotatably supporting the shank, said member being arranged in the larger side of the aperture and normally preventing the tube from entering the larger side of the aperture.

9. In a snatch block ofthe type having opposite sides with a sheave journaled between them, a bar hingedly connected to one of said sides and having an enlarged end, means detachably connecting the enlarged and of the bar to the opposite side, said bar forming a saddle, a becket having an upper portion rockably mountedon the saddle for movement about a horizontal axis,

the becket having an aperture therein to receive the bar, and the aperture being larger at its lower side than at its upper side, the larger side of the aperture being of sufilcient size to allow the becket to slip over-the enlarged end of the bar and the smaller side of the aperture being of insufiicient size to allow the becket to be slipped over the enlarged end of thebar, a hook having a shank swiveled in the lower portion of the becket for movement about a vertical axis, and means in the becketbetweenthe bar and the lower portionof the becket for securing the shank to the latter, said means normally pre- Venting the bar from entering the larger side of a a the aperture. l a

10. In a snatchblock of the type having opposide sides with a sheave journaled between them,

supporting means secured to the sides and forming a. saddle, a substantially stirrup-shaped becket having one side portion engaging the saddle,

for free movement at any time about a horizon ture being largerfat one side than the other, the larger side of the aperture being of sufllcient size to permit the becket to beslipped over the enlargement and the smaller side ofthe aper ture being of insufiicient size to allow the becket to be slipped over said enlargement, a hook hav-;

ing a shank swiveled in the opposite side portion of the becket for movement about a vertical axis, and a nut arranged in the becket and having threaded engagement with the shank, said nut normally preventing the supporting means from moving into the larger side of the aperture.

11. In a snatch block of the type having opposite sides with a sheave joumaled between them,

tal axis,said supporting means being of rod-like form and having an enlargement at gone end thereof, the becket having, an aperture therein to receive said supporting means and the apera horizontal support connecting said sides and having an enlarged end, a substantially stirrup shaped becket detachably mounted on said support and having a single opening therethrough provided atone side with an arc-shaped surface and at the opposite side with a supporting sur-, face, the opening at the arc-shaped side of the becket being smaller than at the side having the a supporting surface, said arc-shaped surface engaging said support and being freely rockable thereon at all times, the larger side of the opening being of sufiicient size to permit the becket to be slipped over the enlargedend of the horizontal support, and the smaller side of the opening being of insufiicient size to allow the becket to be slipped over the enlarged end of the sup port, a hook extending from thebecket and havring a shank swiveled in one side of the becket for movement about a vertical axis, and a support arranged in the opening of the becket, sea cured to the shank and rotatable in contact with said supporting surface of the becket, the lastmentioned support normally preventing the horizontal support from enteringthe enlarged side of the opening. v WILLIAM H. McKISSICK.

JESSEE E. FATE, JR.

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