US1643362A

US1643362A - Logging hook

Info

Publication number: US1643362A
Application number: US186912A
Authority: US
Inventors: Ashdown Sydney
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-04-27
Filing date: 1927-04-27
Publication date: 1927-09-27
Anticipated expiration: 1944-09-27

Description

S. ASHDOWN LOGGING H'oox sept. 27, 19.27. 1,643,362

.Filed April 27. 1927 25 INVENroR, S 2.5' n Bl y ATTORNEY.

Patented Sept. 27, 1927.

UNITED ;,S'le'riE;Sv

PATENT y srnnny AsrrnowN', or VICTORIA, nra'risn COLUMBIA, CANADA,

Application'lled April 27, 1927; SeriaLNfo. 186,912. f

My inventionrelatesmo improvements positive logging hooks Vnacre ,especiallyto keepers therefor, `and an object of my .11nprove'ment yis .to provide nianuallyfoperable means whereby a knobbed cableend retained. in positive engagement with -the hooktillfreleaseis.desired when an easy adjustment of the keeper permits saidfrelease with a small length of cable slack.

I attainthis and. other objects, otmyirnprovement with the mechanism illustrated. in the, sheet of accompanying `drawings, fformin apart, off thisI applicatioin', in which Figure 1 isa frontk side elevation ofzachoker hook .with .myikeeper in place therein,/F1g. 251s an lelevation of one-edge `of F ig.1,,Fig. `.3 1s anelevationgofthe other ,edge..of1Fig.1, Fig. 4 is a cross se ctional view -ofFg.. 2 onthe line-4F14, Fig. 5 is. a crosssectionalvievvLof F ig. 3 on th'e'line 5--5q Fig` is a 'longitw dinal plan viewoffthe, keeper, Fig.7 is a side elevation of Fig. 6, Fig.y I8 isa front elcvation of ,abullhook .wi'thmy- .l e eperin stalled therein, Fig.:v 9is, a View of one edge of said bull-hook, and-Fig. 10 is aview of the otheredgeofsaid bull hook.

-Similar -characters refer tosimilar parts throughout. Certain,y parts, are broken away to show other partshiddenv-thereby.

lith more particular referencetothe designatedl parts:;The choker hook consists o'f two. side pillarsllfll joined at thei bottom by fixed-,jaws 12 havingy cable slot 15 there betweenandl joinedat the ,top lby narrowing or approaching. walls', 13 terminating-j in, lug land reinforced at theA bottom by low back wall 17.

On ltheinner orbearing 4 surface of jaws 12 is recessed knob seat16 preferably Witha concave bottom.4 There areopposite transverse aligned holes 18 and 2O through pillars 11. f The larger ofl theseholesgl I has diametricalv contiguous slot-s 19, 19. 4.Hole 18 is surrounded by exterior, annular boss 21 which ldenes .recess 22` on; the ybo,tt0m .wall of which are two inclined bosses.a22 @22.0011- centric with saidfhole.

VAnnular vboss z23 encircles hole; 2O defining recess 24v.

Choker cable 25 with knob ,w26 finedv ou Vboss 1requires A.spring 32-and thus the presence ofbosses am within the pathqOmOyement of ,the keeper shaftprotruidesin recess 21 whenheadl bears onfthe. ,b otto m .of recess 22and on this protruding shaft end is mounted coil spring vover which ,is placed .washer 33 which is.re tained by pin 31 inserted in hole .29. [Spring 32 is by construction long g enough A'to v reactbetween said .pin and. the

bottom ofrecess 2itocause head. 31. to,have,

considerable Africtional'` resistance- 4with said recess: bottomY against being turned v thereon.

vThe keeper is shown in..f ul1 lines in opera y tive p ositiontoretain knob 26 inengage- Vment i the ho okv with ,one of lugs 28 proximate the topof said knob. By revolving hea d31 throughan angle oi'- 90";k to itsdo'tted posltionat 31 in Fig.. 1 said lugis `moved to ltsdctted position at 28when knob 26n1ay be moved by hand to..its,. dotted-position at 26when its-lower, end., is above the confines otrecess-.l Ez rnditjs free 'to be 4moved out The reverse movements are oft-hel hook. used to engage saidknobbed cable with the hook With the keeper inL its ldescribed dottedg position lsaid knobbed cable end is,l passed `-within the hook in the dotted position at 2,6 andjthenseated in .its full-line positionin reCess;1-6. 'llhenhandle 31 is. turned from 31 to its full-line pcsition-at-,l by revolving it .iny either directionv through. an angle 01.2200 andthe cable is. again positively engagedwith thehook.

y:Enlarged shaft body 30 is mounted` yin .hclef18 whichf is cf greatervdiameter than ythewidth of slots,19,v as is,v also-true of said -enlar-gementrlbanfl tl'lerefore; said .hole may serve .as a bea-ringfor thekeeper.

Vhen 1n posltiontoretain the knob inits seat the;` keeper ,handlels disposedi between zbossesa one ,0i whidi it .must mount. and

pass over in being turned to its dotted positionito: free thecable knob. f To mount this additional compression of head adds'r` to the A,positiveness with which y said keeper. serves its purpose.

- Cablefslceveghas lugsdf-B spaced. to

receive hook l lug 141; between them. l When thusl assembled bolt l37, is extended through AreU-is'terino/ holes inthe three luO's and` reb h b tainedsin place/with nuts ,engagedthereou sistsfof shank 38,1ja-

ws

39, 39, Aeye lug Y knob recess 41 on said jaws, annular boss 42 encircles the cavity or-recess in which operf ates the keeper handle, inclined bosses a, (442 are on the bottom of this recess to afford more positiveness to the keeper, annular boss 43 `.encircles the recess to` house the keeper spring, the keeper shaft is shown at 44 and knob L25 fixed thereon.

its two diametrical lugs at 45 and 46, and the keeper head `at 47. The keepeiwwasher is at 48 andthe retaining pin thereof at 49. j,

f 4 The other end of choker cable25 shown in Figs. 1 and 2 is shown in Figs. 810 and has This knobbed cable end is shown as engaged in Figs. 8-10 where it is disengaged and reengaged in every way similar to that in the above described choker hook.

It is now apparent that the main object ofy my improvement,to provide a modernlog ging `hook which is positive in engagement with the work yetreleasable therefrom by using a small length of cable slack, is very well attained by the vuse ofthe mechanism described.

In bull hooks the positive feature is of prime'importance while the small slack requirement is less so, although at times it is very convenient indeed. But in choker hooks both features afford great advantages over hooks not possessing them. Because of frequent slackening in `the hauling` line choker hooks having slight engagement means frequently become disengaged during use. Also the slip noose encircling the log is often stubborn and difficult to loosen for the needed disengagement slack. Vhile my hook hasslight engagement means, making the slack requirements small `to eHect disengagement, the use of my keeper makes unde- "sired disengagement impossible.

Having thus disclosed my invention, what- I claim as new therein and desire to secure by Letters Patent is,- j f 1. A logging hook consisting `of a bifurcated-shank, U shaped jaws disposed on one end of said `shank having a recessed seat thereon to engage the knobbed end of a cable when between said jaws, cable-engaging means disposed on the other end of said shank, a keeper shaft mounted for revolution across said shank distant from the end of said cable knob when on said jaw seat to permit the removal of saidknob therefrom having a lug `thereon to approach said knob ap- .cause said shaft head to frictionally engage with said shank.

2. A logging hook consisting of a bifurcated shank having a pair of aligned holes thereacross one of which has a radial Aslot contiguous therewith to permit the passage of a shaftlug therethrough, a fixed pairof U-shapedjaws disposed on one end of `said shank having a recessed seat thereon to engage the knobbed end of a cable when` between said jaws, cable-engaging meansdisposed on the other end of said shank, a keeper shaft having" a headand a lug radial therewith extended through said holes for oscillation with said lug within said hook and said head external ther'etosaid shaft distant from the end of said cable knob when on said jaw seat to allow removal ofthe knob therefrom and said lug approachable ap` proximatelyto said knob top by turning said shaft to `prevent the removal of `said knob from the hook, and a spring. engaged with said shaft for reaction to cause saidshaft head to frictionally engage with said shank.

3. A logging hook consisting Aof abifurcated `shank having a pairof aligned holes thereacross one ofsaid holeshaving'radial slots j contiguous therewith and inclined bosseson said shank concentric therewith also said shank having annular bosses surrounding said holes dening recesses in the sides of said shank, a xed pair of U-shaped jaws disposed on one end of said shank having a recessed seat thereon to engage thel knobbed end of a cable when betweensaid jaws, cable engaging means disposed on the other end of said jaws, i a keeper shaft having -a head and lugs radial therewith extended through said holes for i oscillation therein with said lugs within said shank, said head engageable with said inclined bosses in one of said shank recesses and one end of said shaft protruding in the other of said` shank recesses, a coil spring in said other shank recess around said protruding shaft end, and engagement means on the end of said shaft to retain said spring while compressed to react andcause said shank head to bear on said inclined bosses toprevent free oscillation of saidshaft.

`4. A logging hook consisting of a bifurcated shank having a lug with a hole there through integral with one end of said shank, a` cable sleevehaving lugs thereon with aligned holes therethrough parallel with the axis of said sleeve engaged with the said lio the said holes insaid lugs, U-shaped'fixed jaws disposed on the other end of said shank having a recessed cable knob seat to engage the knobbed end of a ealolek When between said jaws, and a keeper shaft having a head and a lug thereon mounted for oscillation parallel with said hinge bolt in holes across said shank with said head otside of said shank and said lug inside thereof said shaft distant from said cable knob When engaged With 'said jaws to permit the disengagement` thereof said shaft lug approaching approximate to said knob by the oscillationv of said 'l0 SYDNEY ASHDOWN.