US2280159A

US2280159A - Cutter

Info

Publication number: US2280159A
Application number: US299239A
Authority: US
Inventors: Ernest C Neal
Original assignee: FRANCIS E MARSH
Current assignee: FRANCIS E MARSH
Priority date: 1939-10-13
Filing date: 1939-10-13
Publication date: 1942-04-21
Anticipated expiration: 1959-04-21

Description

E. c. NEAL April 21, 19442.

CUTTER Filed oct. 13, 1939 l 1N VENTOR. C /Vea Q. ATTORNEY.

` i therein are as follows:

. proved cutter; 1 g

Patented Apr. 21,1942 u t CUTTER, l., l

. t Ernest C. Neal, Cl`1icago,"lll.4 assignor of cne- V 'fourth to James D. Roberts, Portlandyoreg.,

` and oneffourth to Francis E; Marsh, McMinnville,` n Oreg. n i

` Appicatitnfoctober 13, 1939,seramoasazsa `9 o1aims.f(o1. sil-"231) This invention relates" to a. cutter er cutting" t i elementor device'for cutting cables principally, but also for cuttingfbars, rrods and the like.

The primary object` of .the invention is to proi vide a cutter which4 isrrelatively light in weight` f' `so `the same may be moved readily from one location to another; whichiisprovided `with new and improved mechanism; so as `toprngide great leverage to `eiectand insure relatively easy-operation during` cutting; which ,is strong and durable in construction; which is easy andefcient jin operation; which is.` composed `of l. relatively few and simple parts get out of order. l i

Afurther important object of the invention is the provision of a cutter `vvhiehhas along pivotally mounted operating bar providing great leverageso as to rotate abutting jaw in the form of a circular rotatively mounted ratchet operatand which is not likely to ing member having peripheral ratchet teeth, the bar being operatedin` the cuttingy strokehby a cam on` an operating lever whereby a compound leverage principle is ,provided toinsure 1positive and easy cutting` Still another object whereby the movement of* the cutter towardcutn ting position is prevented from moving in a reversedirection, a `condition `which is likely to exist because of the inherent lispringy. character` `istics of the materialto lbecutysuch as cables or cable material. ,t t y Another object of the invention is to provide a cutter which has a compound-leverage priny,ciple of operation to produce positive cutting with the application ot a relatively small amount Hof force to operate altrotatively mounted pawl operated ratchet cutter. t

t Numerous other objects and advantages will be apparent-throughout theprogress of the following specication.

The accompanying drawing illustrates a selected embodiment ofthe invention and the views rig. 1 1s a detaiieievucnai View of the, im-

Fig. 2 is a detail top plan view thereof;

of the invention resides 1 the construction and arrangementof the parts Fig 3 is awdetailsectional view on the `line 3--3 oi Fig. 1; and i t. t

Figs. 4, 5 'and-.6 are detail vertical sectional views on the lines-lk 5-5 and G+S oiFig. 1, t

t respectively.

The cutter or cutting device herein shown for the purpose of` illustratingthe `invention comprises a base or `frame supportlgID, in the ,form of a channelyhavinga ,bottom AIl);fronilsfand `rear t sides I2 andil3,` respectively, and ends I4 land I5,

the end I4 being' closed and the end I5` being open `at or near its upper end.` VThe sidesyl2 `and I3 terminate in upwardly extending portions I6 to form supports or bearingsfora transverse shaft or axlel I1. Thisr axle fII` has "mounted thereon a circular element-,I8` whih is-preierably in the form ofa wheel;l The element or` wheel I8 may be rotativelvmounted ori a nonrotatable axle I 'Iscr 4vthellwheel I8 maybe fixed` to a revolubly mounted axle I1, j ust sefrotary4 n movement may befgiven thereto. A n

`This element I8, yin the `form o fya wheel, gear, sprocket lor the like,` is cut away-as indicated at I9, FigJLto provide a jaw 20, thejmaterialat one t l side-of the cut-away being, beveledfor. curved' to provide a suitablemovable)cutting edg'e2I. This cutting edge or cutting jaw 2|co-operates With a fixed or stationary cutting jaw or` cutting `edge 22.?Vformed'on fthe extending `or projecting edge `23 on the front side member` I2 of the base support Ill. The cutting. jaws 2I land.` 22 are adapted to co-operate with eachother soas `to i t cut a cable, rod, bar, or the like" therebetween. The element IB is mounted `for rotativemovement which is. given thereto progressively by means of an operating ratchet pawl `ZILadapted to engage ratchet teeth 25` formedon apart'of the periphery` i The ptawl `211 issubstantiallyr the same width as the wheel I8, and it is pivotally mountedat 26` to a longitudinal barfor lever member 21 which.` is mounted for vertical oscil- `latory, movement on the shaft `or axle I1'. `The bar or lever member 21 comprises two side bars 2B and 2i)` whichengage the outsides of the side members I2 and i3, respectively,` the

side pieces

28 and 29 being connected 'for apart of their lengths by a top piece orplate 3i).` ,ihe V v I top [bar is thus guided by the

side flanges

28 and 29 and is prevented from shifting laterally. The

free end of thelever `member'o1 j"b`a`r2l hasta roller 3l mounted thereon which isi adapted to engage an operating carri member32 on an operating member or lever, arm 3 3.` The arm`3`3 is pivotally mounted on a .horizontal axis `314 carried by the sides"|2 and I3, an-d it' is in the form of a socket toreceive a long handle 35 to provide great leverage. When thej handle 35 is oscillated forwardly `(to the right, Fig.` 1), the cam 32 engaging the cam roller 3l will raise the free end (the end at they left, Figli) of, the lever bar 2l, and inasmuch as the pawl 24],is carried by this lever bar 2l and in engagement with the ratchet teeth 25, the movement is transmitted to and against the cable so that the wheel I8 willVVV be prevented. from rebounding or rotating in a counterclockwise direction. This means -may comprise a second ratchetpawl 35 which vis so positioned that when the wheel 'I3 is rotated at least one tooth 25, it will fall in between a vpair of teeth 25, the'pawl 36 being so arranged as to hold the wheel I8 against reverse'movement when the pawl 24 rides over the teeth on the return stroke. The pawl 36 is mounted on a horizontal axis 31 which is suitably Isupportedvby the sides I2 and I33 kof the framesupport Ill. After the cable,bar, rod or othermember is out the pawl 36 should b e released. Therefore, aprojection or finger 38 is xed or otherwise fastened to the pawl, there being an arcuate opening '39 formed in the side I2 to permit operation-of the pawl.

The arcuate slot 39y is of a length suflicient to permit the pawl -to engagethe teeth 25 or to be swungon its ax-is 31out of engagement and supported in out of the way position. In this latter position the ng-er 38 will be in the extreme left hand edge of theV slot 39, Fig. 1. As the materialto be cut rmaycause a binding action of the cutting jaws, force may be necessary to free or ease the wheel I8; andtherefore a socket 40 is formed in an advantageous location in the periphery of the wheel into which a bar or other klever may lbe inserted to return the wheel to its normal position, Fig. 1. `To return the wheel I8 to its normal position the pawl 35 of course must rstj-be released( The releasing of the pawl 3S may be accomplished by shifting the finger 38 fromthe right hand end of the slot 39 tothe left hand end ofthe slot.

'IfoY make the device ambulatory, so as to permit it to be movedlreadily from one position to another, two or more wheels or rollers H are provided. These rollers 4|y are mounted on suitable axles. 42 mounted in lugs or ears 43 fastened to the supporting base IIJ".l These lugs or ears may be fastened to the base in any suitable manner, or they may be formed'integral therewith as shown. Also, to permit the device to be handled an end handle 44 and' side handles 45 may be provided. The handle 441is preferably similar to a wagontong'ue while the side handles may be in the form of rigid loops fastened to the sides I2 and I3 in any suitable manner, such as by weldy ing.

The invention provides a rigid, durable cutter of simple design for cutting bars, rods and principally cable. The device can be moved readily andveasily from one position to another and because of itssimplcity can be economically manu* factured.' vBecause of the compound lever action herein provided, very great'leverage can be obtained, theleverage being multiplied because of the particular association ofthe two levers which operate` the driving ratchet pawl. Moreover, the device consists of few and simple parts, and while designed principally for cutting cables, it can be used successfully for cutting bars, rods and other articles of material; l

Changes may be made inthe form, construction and arrangement of the parts without departing from the spirit of the invention or sacricing any of its advantages, and the right is hereby reserved to make all such changes as fairly fall within the scope of the following claims.

The invention is hereby claimed as follows:

1. A cutter comprising a base, a cutting jaw on one side of thebase, a co-operating pivotally mounted member having a cutting jaw adapted for co-operation with the rst cutting jaw, a ratchet pawl for moving the member in one direction, a lever arm pivotally mounted adjacent the pivotal axis of said co-operating member for operating the pawl, and a second separately mounted lever arm for operating the first named lever arm.

2. A cutter comprising a stationary cutting jaw and a movable cutting jaw, an operating ratchet pawl for moving the movable cutter about an axis,

a lever arm pivotally mounted on said axis for operating the pawl, and a second pivotally mounted lever arm cooperating with said rst lever arm at a position spaced from said axis for operating the rst named lever arm.

3. A cutter comprising a stationary cutting jaw, a rotatively mounted member having a cutting jaw adapted for cutting mico-operation with the rst jaw, ratchet teeth on the rotatively mounted member, a ratchet pawl co-operating with the teeth to impart rotative movement to the member,l a lever arm movable about the axis of said rotatively mounted member carrying the pawl and causing operation thereof whenoperated, and a second lever arm co-operating with said rst lever armv at a position spaced from said for operating the r-st lever arm.

4. A cutter comprising a stationary cutting jaw, a rotatively mounted member having a cutting jaw adapted for cutting in co-operationwith the rst jaw, ratchet teeth on the rotatively mounted member, a ratchetl pawl coeope-rating with the teeth to impart rotative movement to the member,an elongated lever arm carrying the pawl and causingv operation thereof when operated, a roller on the lever arm, and a separately mounted cam member co-operating withthe roller to cperate said lever'arm.

5. A cutter comprising a stationary cutting jaw, a rotatively mounted member having a cutting jaw adapted for cutting in co-'operation with the nrst jaw, ratchet teeth on the rotatively mounted member, a ratchet pawl co-operating with the teeth `to impart rotative movement to the member, a pivoted lever arm carrying the pawl and causing operation thereof when operated', a secondv pivoted lever arml separately mountedY on an axis spaced from the pivotal axisof said rst lever arm and having means thereon for operating the first lever arm, and a second pawl co-operating with teeth to hold the member in position when moved by the rst pawl.

6. A cutter for cutting cables; rods, bars and the like comprising a frame including elongated sides, at least one of said sides having a cutting jaw, a rotatively mounted wheel-like memberarranged between said sides and having; a Vcutting jaw adapted for cio-operation with the lirst cutting jaw, an elongated lever arm having guide anges thereon engaging at least one of said elongated sides, aratchet means carried by the elongated lever arm and operated thereby to rotate the said member to move the second named jaw toward cutting position with respect to the rst named jaw, a cam wheel' carried by the lever arm', a separately mounted pivotal cam co-op- `erating with e the wheel to operate the lever arm,

and a lever for operating the cam. 7. A cutter for cutting cables, rods, bars and the like comprising a frame "including sides, at

' least one of said sides having a cutting `jaw, a"

rotatively `mounted wheel-like member arranged between saidsides l and having a cutting jaw.

adapted for co-operation with the iirst cutting "jaw, aylever arm having `guide anges thereon engaging at leastone of said sides, a ratchet carriedby the lever arm and operated thereby to rotate the said member to move the second named jaw` toward cutting position with respect to the nrst named Jaw, a cam wheel carried by the lever arm, a pivotally mounted cam` co-operating with the Wheel to operate the lever arm,` a lever for operatingthe cam, a pawl to hold the said mem-` ber inmoved position when moved bythe ratchet and preventing reverse movement of the member,

frame. e i l 8. A cable cutter comprising a frame,a pivot pin carried by the frame at one end` thereof, a

` wheels onthe' frame, and handles fastened to the cutter element mounted` on the pin, a lever arm red bythe lever arm to operate the cutter element, co-operating cutter jws on the cutter ele# ment and frame, a ca m member adapted for reciprocation -pivoted to thefframe at the end opposite to the cutter element, a member on the lever arm and co-operating .with the cam to cause operation of the lever arm by the cam, and a handle lever for operating the cam.

` `9. A cable cutter comprising a channel frame, alever in the form of an inverted channel pivotally mounted tothe frame and having intertting engagement with the channel frame whereby the lever is vguided by the frame, a cutter pivotally supported in the frame between the frame channel` legs, co-operating cutting jaws on the frame and cutter, a wheel carried fby the lever arm, a reciprocating cam pivotally mounted in the frame e between thefranie` channel `legs and" adapted to raise and lower the lever, a handle for operating `the cam, and a ratchet pawl carried by the lever and adapted to operate the cutter upon operation of the lever'arm by the` cam.

ERNEST C. NEAL.

pivotally mounted on said pn, a ratchet pawl car-