US1176216A - Knotter-hook for binders. - Google Patents

Description

V. R. HANSON.

KNDTTER HOOK FOR BINDERS. APPLlcAUoN rlLl-:n JAN. s. 191s.

1,176,216. l ,Patented Mar'. 21, 1916.

rrnn sinY rement ernten.

VICTOR `IR.. HANSON, OFJVIINNEAPOLIS, MIN.`L\TIE1SO'].`J1f

KNOTTER-I-IOOK FOR BINDERS.

Application filed January 6, 1915.

To all whom t may concern:

Be it known that I, VICTOR R. HANsoN, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Knetter- Hooks for Binders; and I do herebydeclare the following to be a full,clear, and exact descriptionof the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

invention has for its Vobject to improve the invention consists of the novel construction and combination of parts hereinafter described and defined in the claims.

More `specifically stated, my invention has for its-object to provide an improved knotter hook which is automatically adjustable and universally adaptable for use fto tie knots in binding. twine` of greatly varying diameter and quality, orl in other words,

which will operate eiiiciently to tie knotsinV very small twine,'or in very large twine, or inthose cheap grades of loosely made twine which vary at different lineal points both in diameter and compactness.

The above objects are accomplished by the provision of a yieldingsecondary jaw, set into a slot in the bifurcate'd foot portion of the hook and arranged for coperation with the primarvcam-actuated jaw of the hook.

The invention also involves certain other highly important features, as will hereinafter appear.' InY the accompanying drawings which illustrate the invention, likefcharacters indicate like parts throughout the several views. Referring tothe drawings: Figure 1 is a view in side elevation showing the improved knetter hook complete and showing also por-f tions of one of the bearings' and the cams for actuating the primary jawk of the hook;

Fig. 2 is a side elevation of the hook looking j at the opposite Aside from that shownin Fig. 1; Fig. 3 is a view correspondingV to Fig. 2, but with certain parts sectioned and some partsnbroken away; Fig. 4 is a rear elevation of the complete knetter hook; and Fig. 5 1s a detail in section taken on the line m5 m5 on Fig. 2.

The knetter hook'l, except as hereinafter noted, is of theusual form, and it is either formed as an integral part of, or otherwise Specification of LettersPatent.

Patented Mar. 21, 1916. Serial No. 775.

rigidly secured to the customary shaft 2, which, in practice, will be rotated inV the usual way. The lower end portion of the shaft 2 is journaled in a bearing 3 which has the usual cam surfaces 4 and 5 for operating the knetter' jaw, which, in this instance, is the primary jaw of the hook.

In accordance with my invention, the foot andbody portion of the hook 1 are bifurated to afford seats for a pair of coperating twine clamping jaws G and 7 that are intermediately pivoted to the said hook, respectively, by pins 8 and 9. The jaw 6 corresponds in a general way to the usual knotter jaw and is provided at one end with the customary anti-friction roller 10 that is subject to the cam surfaces 4 and 5, under rotation of the knotter hook` In this improved knotter hook, the jaw 6 is treated as the primary jaw and the jaw 7 as the secondary jaw. These two jaws are provided with cooperating serrated surfaces Ga and 7a, respectively, which, when the jaws are forced to-V gether, interlap in such manner that they will grip the smallest kind of twine. The secondary jaw 7, at that end which is under the roller-equipped end of the primary jaw 6, is subject to a coiled compression spring 11 that is set into a suitable seat 12 formed in the body ofthe hook 1. The said seat 12 is laterally offset from the plane of the jaws 6 and 7 and the secondary jaw 7 is provided with a laterally offset lug 13 against which the said spring 11 re-acts, with a force tending to hold the said secondary jaw in the .normalpositicn indicated in the several views of the drawings. It is important to note (see particularly Figs. 3 and), that the bifurcated foot portions of the hook 1 are made concave-convex, so that they form a sort of a channel above .the bottom of which the serrated edge of the secondary jaw 7 projects upward. In fact, the serrated edge 7a of the said jaw 7, preferably, projects normally slightly above' the upturned outer edge flanges ofthe bifurcated foot portion of the said hook 1. It will also he ncted that the extreme end of the primary hook 6 is increased in depth or formed with a sort of a lug that overlaps with the outer end of the secondary hook 7. e

Under rotation of the knotter hook, when the roller 10.is forced against the cam surl:the said channel.

in Fig. V1, and when the saidroller 1,0 is.`

mary hook will be k,forced downward `to its extreme position indicated in Figs 2 and 8. lVhen the above noted movement of the primary hook takes place with no twine in the hook, the serrated surfaces GLP-'andia of the said hooks 6 and 7, are simply forced into engagement, but little or no movement will be given to the secondary hook. When, however, the Ysaid. movement of the primary hook 'takes :place 1while twine isbetween the two jaws, the said secondary hook will be depressed a distance depending on the diameter of the interposed twine. AThe tension of the springll must be such thatthe twine gripping engagement of the hooks 6 and 7, therewith, will securely i hold the twine against slipping, while the knot is being tied. The channel-,shaped form of the bifurcated portion of the ,hook permits the serrated end of the secondary jaw 7 to Vbe depressed at various distances without'bringing the twinejtightly against .the .bottom of At the Sametime, when the jaw ,7` isdepressed to any considerahle extent, the twine will be kinked over the edge flanges of the foot o'f the hook and the twine-holdingaction thereby increased.

".By referring to Fig. 1,'it will be noted, that when Vthe primary jaw f6 is raised 4to its extreme position, Vits `roller-equipped` end engages 'the underlying end of the secondary jaw 7 so thatiit thus serves to Vpositively insure return movement of the said secondary jaw to its normal position after each depression, and prevents the said secondary jaw from being wedged, by portions of lthe twine or position.

Itl is 'therefore evident that this improved knotter hook will automatically adapt itself to different kinds, grades and sizes of twine.

It should be further noted that the offset lug 130i' the secondary'jaw'? worksin a recessie formed in the body of the hook l and that the engagement'of lthislug with the walls of itwill tie knots in ordinary wrapping twine, f

lsaid recess limits the extreme movements of said secondary jaw. Also, it shouldfr be Y noted that the .primary jaw (iis provided at its roller-equipped end' with a stop shoulder 15 that engages with lthe lower end of the shaft 2, to "limit the eXtreme downward movement of the serrated end of the said primary jaw. Furthermore, the concave convex' lor channel-shaped cross sections of the bifurcated footy portion of the hook, afford channels into which the cut ends of the twine maybe forced to facilitate the slipping of the tied knot off .the hook.

In actual practice, it has been found that in Vveryflarge cheap grades ofirregularly and Vloosely formed binding twine, and also,

shank audrigidlv connected ,footgirre-V portions of 'straw in a depressed of cou rse, in the variousintermediate gradesv andsizes. The knot tied by'this knetter is,

:as will be'understood, that tied by various l, A -knotter hook comprising .a .shank I and a footprojecting laterally from one fend thereof, two co'ipei'ating ljawsfpivoted.to said foot for-movements toward ,and fromV each other, and inrespect .tosaid footfand means formoving one of theknot tying action.

tliesaid aws inK Y Y 2 2. A rotary fknotterihok Vcomprisng ,at

jectin'g laterally `'frein .one ,end thereof, 4a:- pairY of` cooperating jaws gpifvfted ito said f0.0t for `I novements toward land: from ,each other :and in, respect to said foot, yielding means normally holding Vone tof. said jaws i use' in a. ,predetermined position in l.respect to said foot, and means for'movingthegother jaw. toward said yielding `jawunder trotation ofsaid knotterhookf` V f f 3. A. knotter hook Ycomprising -a shankA having at one .end a laterally projecting footy a positively operated primary Ejaw.pivoted to said foot, and a ,coiperating yieldiugly held secondary jaw also pivotedzto said'foot, Y

the twine engaging portion vvof 'said .seconde aryl jaw beingnormallv Vabove 'the cord;l

engaging face lof the saidffoot, and adapted tombe depressed-variable distances 4toautomatically adapt the knotter t0icordloi'fdieiir` ferent size. Y y Y n 4. A knotter'hook comprisinga shankY having at .one endV af laterally.projecting hifurcated foot port-ion, the said; bifurcated footporltion ,being yconeavofconyex .in cross .Y section, and primary and secondaryftwine clamping jaws 4pilvotally connected the hlfurcated portion of the 4body ofsaid hookf,

the said secondary jaw'being yieldllglyheld:` i

in normal positiom and the ;saidfprimary Jaw being capable ,off predetermined 4norme? ments in the knot-.tying action.

5. A rotary "knotter'hook comprising a fizt shank and a foot rigidly secured to oneend Vj of said shank and projecting laterally` there-v Y from, the projecting portion of .said'foot .bee ing bifurcated and thefsaid;bifurcateel ,portion having a channel-shaped cross section, primary and secondary j-awspivotedto .sind foot, the ylatter. beiner located inthe bifurca-V tion of `Said foot, 'a Spring yieldngly isa Y ing said secondary jaw with its upper free end portion above the bottom of the channel of said foot, and meanslfor positively moving said primary jaw toward said secondary jaw in the knot-tying action.

6. A knotter hook comprising a shank having at one end a laterally projecting foot, coperating primary and secondary twine clamping jaws pivoted to said foot, the form-er of which jaws, at one end, is equipped with a rollerand provided with a stop shoulder for. limitingone movement thereof, and the latter of which jaws is provided with an offset lug working in a recess in the body of said hook, and a spring set into the body of said hook and compressed In testimony whereof I affix my signature i in presence of two witnesses.

VICTOR R. HANSON. Witnesses:

HARRY D. KILGORE, F. D. lVIrRCHANT.4

Copies of' this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D.`G.

Images