US1047429A

US1047429A - Cloth-cutter.

Info

Publication number: US1047429A
Application number: US65439511A
Authority: US
Inventors: Henry A Meyer
Original assignee: WOLF ELECTRICAL PROMOTING Co
Current assignee: WOLF ELECTRICAL PROMOTING Co
Priority date: 1911-10-12
Filing date: 1911-10-12
Publication date: 1912-12-17
Anticipated expiration: 1929-12-17

Description

H. A.MEYER.

, CLOTH GUTTER. APPLIoATIoN FILED 061212, 1'911.

1,047,429, Patented Dec, 17,1912.

2 SHEETS-SHEET 2.

' www0/w05 l g I l -V all whom #may concmf x I IIiNnY-A. MEYER, or cINcINNA'rI, omo, AssIGNon 'ro Tnnwo'Lr --ELEorItIcn af rnomorING. COMPANY, or CINCINNATI, oHIo, A conronarI'oN o F o nro.

' CLOTH-currar.

Speei'icatin.ofv Letters Patent.A

' Be it known that I, HENRY A. 'll/laren, a

citizenof thevUnited States of America, re'- sid-ing at Cincinnati, in the countyof Hamilton and'jSt-ate'of Ohio, have inventedcertain new and useful Improvements in Cloth- `Cutters,of which the following is a specifi 4cation.l This invention .relates to cloth-cutters of while' '-hisother handis pressed upon the, clot-h to prevent it being merely pushed' yaside by the advancing tool.

An object of this invention is to providesimple and efficient means te prevent .in'

that type in which a power-.driven blade or knife is mountedina hand-propelled car- 5 -ri'age and works through several layers or plies of material as the carriage is caused to travel.

It is customary for the workman to push the carriage to the work with onev hand 'I jury to the'hand bycontact withv thev knife through carelessness or accident.

4The work required of the knife 1s. so heavy that it quickly becomes dull' in use and one f object of-my. present invention is topr'ovide -improved means for sharpening thefknifef withoutstopping the operation of the cutter. `The invention is illustrated inthe accom' panyi'ng drawings and is `hereinafter fully described, the novel features being particularlypointed out'in the claims at the end of the description..

In the 'said drawings, Figure is'an elevation of the complete cutter, Fig.' 2 is an elevation ofthe lower portion of the device, showing the sidef opposite'to that appearing -fin Fig'. 1;-` Fig. 3 is a rear elevation, Fig. 4

is an enlarged detail section taken onthe line 4 4 of' Fig. 2, Fig. 5 is a similar view taken on the line55 of Fig. 3, Fig, 6 is a detail view o'f the stop for limiting the play of the guard, Fig. 7 -shows -a modification.

The carriage comprises a base 1, a'hollow standard 2 rising from the base, and a body or casing 3 on' the upper end of the standard.

Vv'parts so far mentioned being well-known.

On. the front of the body or casing suhstantiallyin the vertical plane of the knife, 'are alined guides, brackets or perforated 'Patented De e17,191 2. Applicatio flied voctober-1 2, 1911.' serial Iii-5.654395. a

lugs 7 .in which a freely sli'dable guard 8 is mounted, the said guard preferablyy consist- 'Fiom 6. It will be readily seen, on reference to i 1, that thestop rests upon thel'ower guide 7- ,and' thereby' supports the guard at the height to which it may be adjusted. By shifting the'stop along vthe rod,'th e guard maybe adjusted tothe thickness of the body of cloth beingveut-so that its lower end will a rest on the cloth and thereby prevent the passa-ge of the operatorsl hand'rto the knife.

'-lVhen the cutter 'advances through the cloth .on a straight line, the surface 'of-the cloth remains level andthe' guard a is 'at rest relai- -t'i'veft the 'other' parts of the .app'aratufa WVhen, however, the cutter. is turned 'soA that the cut will describe acurve, ,the cloth willv be raisedat voneside of the cut by the changing ofthe angle of thel blade to the cloth. Under. such conditions, the fixedv guards Vheretofore employed frequently be came 'entangled with the cloth so as to bar the progress of 'the machine and damage the I ride over any bunching of the cloth while remaining in contact with lthe surface thereof so that while-it-edectually-holds the o er,

'- atorshand out'of contact with the e, it

avoids injury to the cloth.

Cloth-cutters have heretofore been equipped' with knife-'Sharpeners which have been mounted on the'front of the carriage and couldl be brought into'cbntact with the edge of the knife so that the knife could be sharpened without dismantling the machine.l

It was necessary, however, to stop the machine while the grinder was being adjusted to its working position and the hand was frequently cut4 by contact with. the knife through accident or carelessness ion the part of the operator. To prevent'iinju operator from thisv source, and-tolga the application of the grindertothe knife,

l l mount the grinder on the, back; of. the carto. the c'ilitate riage adjacent the handle. To this end,in the'preferred arrangement, an 'enlargement or-boss 11 is provided on the body and the.A

handle 12 is threaded into said boss. 5 notch or4 open slot 13 -isformed in the .lower edge of the boss and in this notch is pivoted the .upper end of the' lever arm 14 rising 1. from ayoke or 'carrier 15. The arm 14 and yoke 15 constitute an angular'grinder-car- 10 rying arm, the :angle of which is adapted to e handle, ,as hereinaftermore fully "-'zyjtaneously'with the guiding of the cutter. A'

, 13. leaffspring 16 has its lower end secured to thev carrler by'a set screw 17 and its upper end held betweenthe boss 11 and an' annular shoulder 18 on the. handle when the handle is threaded into the boss as will be readily understood on reference to Fig. 5. The action o'f the -spring is to!v hold the car'- rier normally away from the cutter but a light pressure applied to the carrier will overcome the 4resistance of the-spring and force the grinderagainstl the knife,- tlie upper end of t-he spring sliding upon the boss sufficiently to followthe movement 4of the carrier while at the "same time the ltension Vof thespring will Abe' increased. To the ends of the yoke 15 are secured, clamp members or cap plates 19 by bolts or screws 20 and in the opposed' faces vof 'these members and the carrier are recesses or grooves with I i Awhich sleeves or bushings 21 have a'threaded l engagement, said sleeves or bushings receiving the journals 22 projecting from the heads or plates 23 `to eachof which'` an emery ring or other abrading element 24 -is secured. It will be noted that the inner 440v end of the bushing 2l bears against the head :23l and a v screw 25 tapped into the end4 of the journal has its head in engagement with the oute-rfend vof the bushing so' that thev .bushing is :fixed between said screw and the a longitudinal travel of ,the s'amevand the grinderyhead to adjust the abrading elements' vtcLjand from each other, aswill be readilyfinil'erstod.' Itwill also be observed v- 'that when the grinder is in engagement with the knife, thefrictional contact between them tends to draw 'said grinder 4more firmly against'.- the'knife,lrather than throwy the ""grinderfofl' of the knife as in previous con# structionsl This drawing ofthe grinder to the knifeunder frictional engagement 'between them is due to the fact that ythe dis-- tance from the pivotal axis of the arm 14 to the" farthest point onV the knife-engagingvi'portion of the grinder is greater than the rdistance from said axis to the nearest point on the periphery of the knife, and also to the fact 'thatl the -grinder is arranged at the side Aof'an .imaginary line, connecting saidv axis (i5 tothe knife i-n order, that the abradinggelements, will not lie flat' against the face of. 4the'knife but will work-across the same at head and rotation of the bushing will effectv and nearest 'point on said periphery, toward.

vwhich line the knife revolves. As illustrated, the grinder is mounted behind the knife and extends below theiniagi'nary line connecting the pivotal axis of the grinder-'carrying `arm and the nearest point on the periphery '70 of theknife. It will thus be seen that the point of contact between the grinder and knifelis so disposed with respect-to the axis land direction of rotation of said knife and the direct-ion of movement of said. grinder 7 5 .that the frictionalvengagemet of the in one .end of ,the .yoke 'or carrier which I supports the grinder, is a gage 26 which is shown inthe form ofia headed screw or bolt f 'threaded into the carrier and lprojecti 4towardfthe. body or casing so that, lwhen t e carrier is moved towardthe knife, the head 9 0, I

of the gage will come into contact with-the lower edge of the boss 11 and thereby limit A' the 4movement ofthe carrier.v It will be obvious that the-'screw may be'adjusted to projectqmore or less toward the body and will come into contact with the body, sooner or later accordingto its adjustment, so that t-he throw `of the carrier may be accurately regulated Aa-nd the abrasive elements permitted to extendmore or less over the face of the knife to compensate for wear4 and.A other conditions. It will be observed, more` particularly u pon referenceto 3, that the grinder is disposed somewhat obliquely. '105 an angle thereto and will,therefore, 'grind a bevel on each side of the edge. -It will 110 f also 'be noted that the grinderl is located at tlle junction of the handle-and the body where it may be convenientlyreachedY by the thumb or fingers of the hand grasping the handle 12, as shown by dotted .li-nes in' Fig. 1. The grinder may thus be'readily applied to the knife so as to sharpen the same without stopping the operation of the machineor exposing the vhand to contactj4 withfhe knife. f

In Fig.' 7, I have'illustrateda modified arrangementgof the grinder Ain whichthe' carrier 27 is provided with a vertical arm 28 slidably and non-rotatably mounted onfa guide or supporting pin 29 projecting hori-l zontally from the body or Casingbelow the 125 handle.) A spring 30 is coiled around the hold the arm andthe carrier normally away from 'the body, apin o1" other stop 31 being E' provided Ato prevent the spring throwingl .19

40 prising two elements adapted to simulta- A Irio'unted on said arm, the distance fromthe -the knife. When the grinding is completed,

the pressure'of the fingers upon the arm- 28 v removed and the spring'SO then at once returns the parts to their normal positions.

My improvements yare simple in their distlnguishing characteristics and 'do not add to the present weightof the machinesnor tothe cost of production while they increase the eiiiciency and lessen the danger of injury from the use ofthe cutters.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: i

1. .The combination with a body and aro'- tary knife carried thereby, of a pivotedy arm ada ted to swing toward and away from the kni e in the plane of the latter, a grinder pivotal axis of said arm to the farthest pointlon the knife-engaging portion of the' grlnderbeing greater than the distance from said axis to the nearest point 'on the periphery of the knife, and said grinder, when in l contact with the knife, being arranged'at the a body and a'rotary knife side f an imaginary line, connecting said' axis and nearest point onl said periphery, to-

Ward- Which line the knife revolves, whereby the Vfrictional engagement of the grinder .and 'knife tends to drawthe former Amore firmly againstl the lat-ter. 2. In fa cloth-cutter, the co bination' with dzirried thereby, rinder mounted on said body to be of a moye toward and away from theknife in the plane of the latter, said grinder' comneously engage opposite sides of the knife,

and the points of contact of said grinder tary knife carried thereby, of a pivoted arm adapted to swing toward and away from the knife in the plane of the latter, a grinder mounted-on saidarm, the distance from the pivotal axis of said arm to the farthest polnt on ,the knife-engaging portion of the grinder being greater than the distance from said axis to the nearest point on the periphery of the knife, and said grinder, when in contact with the knife, being arranged at the side of an imaginary line, connecting said .aXis and nearest point on said periphery,

toward which line lthe knife revolves, Whereby the frlctional engagementof the grinder and knife tends toV draw the former more iir-mly against the latter and means to limit the movement of theV grinder toward the knife. i'

4. The combination with a body and a rotary knife-carried thereby, of an arm piv- I oted on the body in 'rear of the knife, a grinder mounted ,on the arm, the distance from the pivotal axis of saidarm to the farthest point on the knifeengaging portion 'of the grinder being greater than the distance from said axis to the nearest point on the periphery of the knife, and saidgrinder being yarranged' below an imaginary line.`

'connecting said axis and nearest point on said periphery, whereby the frictional engagement of the grinder and the knife tends to draw the former 'more firmly against the latter. I

' 5. In a cloth-cutter, the combination with a body, a handle and a 'knife on the body, of

an angular arm pivoted on said body, and a, grinder mounted on said arm and adapted to be moved thereby into engagement with the knife, the angle of said lever being arranged adjacent the handle and adapted to be engaged by the operato-rs hand, which' grasps said handle, for actuating said grinder simultaneously with the guiding of the cutter. s

6. The combination of a body, a knife carried thereby, a handle secured to the.

body, a grinder pivoted on the body and yadapted to engage the knife, and a leaf spring normally holdingA the grinder. out of engagement with the knife, said spring being rigidlysecured to the grinder and con- 'ined but adapted' to slide between the Ihandle and body to'al-low the lspring to follow the movement of the grinder.

In testimony whereof l aiiix my signa-V ture, in presence of two Witnesses.

HENRY a; MEYER.'

`Witnessesz O. E. SCHULTE, JOHN R. LEWIS.