US2384130A - Cable and structural shape cutter - Google Patents

Description

Sept. 4, 1945. p s PE| TAL 2,384,130

CABLE AND STRUCTURAL SHAPE CUTTER Filedsept.18,1944 zsheets-sneetl A-F WALLAcc izgggr LOCKS sept. 4, 1945. P. s. PEU. Em. 2,384,130

PHn. '5.PELL

:1:1: AF WALLAQE.

// 4 w YPCRL Foc www Patented Sept. 4, 1945 UNITED STATESvv PATENT OFFICEv .A CABLEAND s'muzcrrlltr. SHAPE CUTTER Phu s. Pell and Arthli F. Wallace, Honolulu,

- Territory of Hawaii Application September 18, 1944, Serial No. 554,700 7 claims. CL 164-56) This invention relates to cutters and more particularly to hand operated portable cutters for cutting cable and other structural shapes.

' This application is an improvement over the invention of Phil S. Pell and Arthur F. Wallace as disclosed in U. S. Patent No. 2,236,833 granted April 1, 1941. The device described in this patent comprises a body construction having a relatively small horizontal Ibase with the major portion of the body having a vertical axis. The axis of cutter movement in the device described in this patent is normally vertical. In accordance With'the instant invention, the device comprises a body incorporating a relatively large horizontal base and the axis of cutter operation is normally horizontal, though the device is capable of use with the axis of cutter operation extending in any direction.

` It is an object of the instant invention to provide an improved hydraulic operated cutter capable of general use.

' Another object of the instant invention is to provide a novel portable hydraulically operated cable cutter capable of long life under severe conditions with minimum risk of failure or breakdown.

Other objects and the nature and advantages of the invention will be apparent from the following description taken in conjunction with the accompanying drawings, wherein:

vFigure 1 is a vertical section with parts shown in elevation and with parts broken away showing a cable cutter in accordance with the invention;

Figure 2 is a fragmentary view in elevation of a portion of the cutter shown in Fig. 1;

Fig. 3 is a fragmentary transverse sectional view depicting the hydraulic relief mechanism, and

Figure 4 is a View in elevation with parts broken away showing the extension for the handle of the cutter device.

Referring to the drawings, the main body I of the cutter may consist of a casting of steel or other suitable metal, and is formed with a looped formation Il which may serve as a carrying handle or as an eye for a. hook when the device is supported vertically aloft aboard ship or elsewhere. Formed in the main body Ill is a cylinder I2 which is adapted to coact with the hydraulically operated ram I3. Secured to the main body IU. at its outer side, by three cap screws I4, is the ram collar I5, the inner end of which extends within the cylinder and serves as a base or stop for the ram retracting spring I6 which normally inner end of the spring I6 coacts with a shoulder I1 adjacent the inner end of the ram so that when the ram is forced outwardly under hydraulic pressure, the spring I6 is placed under compression and tends to push the ram inwardly. The cap screw I8 and the ram retainer I9 serve to secure the ram cup leather L to the ram in a manner such that the leather is always in contact with the inner walls of the cylinder I2 so that there'is no tendency for the hydraulic medium to leak past the ram.

The cylindrically shaped reservoir 20, which is adapted to store the hydraulic medium, which may be oil or other suitable fluid, is provided with an opening 2I at the top, which opening is adapted to be covered by the cover plate 22 secured to the main body by four cap screws 23.

Pinned by the pin 24 to the projection 25, formed integral with the ram I3, is the cutter 90 blade 26 whichis adapted to coact with the die Gil inserts 21 in a manner such that when the ram is forced outwardly, the wire strand cable will be neatly cut. The die inserts 2l are mounted within the die block 29 which is pivotally secured to the main body II) by the pin 30. The pin 30 may have its head arranged flush with the main body I0. The die block latch 3| is of looped formation, is pivotally mounted to the die block 29 by the pin 32 and is adapted toengage the projection 33 extending from the main body I0, as shown in Figure 1.

The bail 34, pvoted at 35, serves to hold a pump handle 36 in place when not in use, as shown in broken lines in Fig. 1, and when the pump handle is in use the bale takes the position shown in full and dotted lines in this figure.

The pump handle hinge boltl 31 pivotally supports the pump handle socket 38 on the projection 39 extending from the main body I0. The plunger hinge bolt 40, secured through the head 4I of the plunger 42, is adapted to operate within Ithe slots 43 formedwithin the ear-like projections 44 extending from the lower portion of the socket 38 in such a manner that when the pump handle 36 is pumped up and down the plunger 42 moves up and down Within the vertical cylinder 45 formed within the main body IIJ. About the plunger 42 is located the packing 46 held in place by the plunger packing retainer 41.

The plunger leather retainer screw 48, under the head of which is located the plunger leather retainer 49, serves to secure the plunger leather to the working head 5I of the plunger which tends to prevent the leakage of hydraulic metends to push the ram into the cylinder. The dium past the plunger.

The passages 52 and 53 serve to connect the reservoir 20 with the cylinder 45 and the string pressed ball or `check valve 54 controls this connection. The passages 55, 56, 53 serve to connect the cylinder I2 with the cylinder 45 and the 5 spring pressed ball or check valve 5 1 controls this connection. 'I'he passage 58 serves to connect the top of the reservoir with the relieippening 59: and the ball valve 60, controlled by the #oper-ating'l'iaridlel 62, normally closes this passage until ii is desired te relieve the 'hydreu1icsystem.

therefore the invention isnot limited to what is shown in the drawings and described in the speciiication but only vvas indicated in the appended claims.

What is claimed is: 1. A portable manually operated tool. for cutting cable or other elementsfcomprising a bodymember, a driven hydraulic 'ram `cooperating with a cilinderaformedin said body, a reservoir rora'iiygir'guiie'iiiedium located in seid body, a

plungercoacting 'with a hydraulic cylinder located in said body, uid passages connect'- ing said-cylinder cooperating with said driving `plui'iger-with;the cylinder cooperating with said 'I'liough the pumpl handlolllsA shown in 'Fig-f. ure 1 as being of a length approximating the lddr'iven hydraulic ram, a cutter blade pinned to length of |the main body,lit maybe longer' or it may be provided with an extension E (Fig. 4) so that greater leverage can be obtained;

In using the device in accordance withthe invention, the device may be located on atable or 20 :door or deck in `horizontal position, or may be held in verticalpositioncr suspended in vertical position and, accordingly, this portable device is capable L of very general use. The bail 34, shown in Fig.v 1 of the drawings, is swung in a counter- 8 5 clockwise direction so as to release the pump handle 86,*theidie block latch 3i is also swung inafcounterclockwise direction and the die block itself also rotates in a counterclockwise direction. The cable .or'other element to be 'cut 'is $0 then located across the cutter blade -v2liv as shown in Fig. 1I the die block rotated in clockwise direction in the position shown in Fig.A 1, the die block latch closed and the pump handle operated upwardly and downwardly -to cause the plunger 86 4! to move upwardly :and downwardly and suck in the hydraulic medium past the intake ball or check valve 54 into the cylinder45 and pump it past the discharge ball or check valve 51 into the cylinder I2. and cause theram i3 to move .40

with great force outwardly so Athat the cutter blade 26'coope'rates with the die linserts 21 and neatly cuts the cable 28 or other element vto be cut.

After the cutting'operationhas been effected,

' ervoir to said driving plunger cylinder, a check the .hydraulic system may be relieved by unscrewing the.. plug -l by means of the handle l2 so that the ball valve 60 will be opened slightly by 'theFpre'ssure from the hydraulic system against the bail.v The hydraulic medium within the' cyl- 50 inder may then be forced downwardly -by downward operation of the pump handle 36 past the discharge valve 51 through the passage 63 ,past the ball 4valve 80 back into the top of the reservoir. IIL-, The Weight of the pumphandle 55 $6` itself may be suilicient lto relieve the hydraulic system and cause ow of the hydraulic medium within4 the cylinder 45 back to the reservoir 2li.

`The plug 6l is then tightened down by means Y ofthehandle 62 andthe device is again rea/dy 00 through passage 5 5, passage 63 past valve 60 and 65 back into the top of the reservoir 20 under the influence of the spring I8. When-the ram i3 is moved inwardly to the cylinder l2 under the influence of the spring I 6, the cutter bla-de 26 will also be moved inwardly so that the device 'M will lagain be capable of receiving cable or other elements to be cut.l

It win be obvious to thes'eskiiied in the art -j-tl'i ai'. various changes may be made without desaid hydraulic ram and adapted to move with said ram, a die block pivotally mounted to said l;body',ia. Vdie set mounted in said die block, adapted to cooperate with said cutter blade, a latch for locking said die ,block to said body'so as to hold l said die-'set -within said die block in relatively iixed position v with respect to said movable cutter blade means for operating said driving plunger, duid passage means connecting said reservoir to said driving'plunger cylinder and a check valve located in said uid passage means.

2. A portable manually operated tool for cutting cable or other'elements, comprising a body member, a driven hydraulic ram cooperating with a cylinder formed in said body', a reservoir forhydraulic medium located in said body, a driving plunger coacting with a hydraulic cylinder located in said body, iluid passages connecting said cylinder cooperating with said driving plunger with the cylinder cooperating `with said driven hydraulic ram, a cutter blade pinned to said hydraulic ram and adapted to move with said ram, a die block pivotally mounted to said body, a die set mounted inrsaid die block, adapted to vcooperate with said cutter blade, va latch for locking said die block to said body so as to hold said die set within said die block in relatively xed position with respect to said movable cutter blade and means for operating said driving plunger, fluid passage means connecting said resvalve located in said uid passage means, and a check valve located in the passage leading from the driving Aplungercylinder gto the driven ram cylinder.` g

3. A portable manually-operated tool lfor cutting cable or other elements, comprising a bodymember, a d riven hydraulic ram cooperating with a cylinder formed in said body, a reservoirfor hydraulic medium located insad body, a driving plunger coacting with a hydraulic cylinder located insaid body, uid passages connecting said cylinder cooperating with said driving plunger with the cylindercooperating with. said driven hydraulic ram, a cutter blade pinned to said hydraulic ram 'and adapted to move with said ram, a die block pivotally mounted to said body, a die set mounted in said'die block, adapted to cooperate with said cutter b1ade,'a latch for locking said die block to said body so as tohold said die set within said die block in relatively xed positionv with respect to said movable cutter blade and means for operating said driving plunger, iiluid'v passage means connecting said reservoir to said driving plunger cylinder, a check valve located in said fluid passage means, a check valve located in the passage leading from the driving-plunger4 cylinder to the driven ram cylinder, and spring means located about a portion of said ram and parting from the spirit of the invention and within -said ;ram cylinder for moving said ram 'inwardly when the pressure within the passage leading from said driving plunger cylinder to said ram cylinder is relieved.

4. A portable manually operated tool for cutting cable orv other elements, comprising a body member, a driven hydraulic ram cooperating with a cylinder formed in said body, a reservoir for hydraulic medium located in said body, a driving plunger coacting with a hydraulic cylinder located in said body, iluid passages connecting said cylinder cooperating with said driving plunger with the cylinder cooperating with said driven hydraulic ram, a cutter blade pinned to said hydraulic ram and adapted to move with said ram, a die block pivotally mounted to said body, a die set mounted in said die block, adapted to cooperate with said cutter blade, a latch for locking said die block to said body so as to hold said die set within said die block in relatively xed position with respect to said movable cutter blade and means for operating said driving plunger, fluid passage means connecting said reservoir to said driving plunger cylinder, a check valve located in said fluid passage means, a check valve located in the passage leading from the g5 driving plunger cylinder to the driven ram cylinder, spring means located about a portion of said ram and within said ram cyllinder for moving said ram inwardly when the pressure within the passage leading from said driving plunger cylinder to said ram cylinder is relieved, and means for relieving said hydraulic system when the cutting operation has been completed, said last mentioned means including a passage leading from said ram cylinder back into said reservoir and a passage leading from said plunger cylinder back into said reservoir, a valve for controlling said two last mentioned passages, and means for controlling said valve so as to permit passage of hydraulic medium through said two last mentioned passages.

5. A portable manually operated tool for cutting cable or other elements, comprising'a bodyV member, a driven hydraulic ram cooperating with a cylinder formed in said body, areservoir for hydraulic lmedium located inV said body, a driving plunger coacting with a hydraulic cylinder located in said body, fluid passages connecting said cylinder cooperating with said driving plunger with the cylinder cooperating with said driven hydraulic ram, a cutter blade pinned to said hydraulic ram and adapted to move with said ram, a die block pivotally mounted to said body, a die set mounted in said die block, adapted to cooperate with said cutter blade, a latch for locking said die block to said body so as to hold said die set within said die blockV in relatively ilxed position with respect to said movable cutter blade and means for operating said driving plunger, said body being arranged generally horizcntally, said ram cylinder being arranged so as to have a horizontal axis, said plunger cylinder being arranged so as to have a generally vertical axis, said hydraulic medium reservoir being ci "generally cylindrical Ashape and having a horizontal axis and being located generally about ting cable or other elements, comprising a body member, a driven hydraulic ram cooperating with a cylinder formed in said body, a reservoir for hydraulic medium located in said body, a i driving plunger coacting with a hydraulic cylinder located in said body, fluid passages connecting said cylinder cooperating with said driving plunger with the cylinder cooperating with said driven hydraulic ram, a cutter blade pinned to said hydraulic ram and adapted to move with said ram, a die block pivotally mounted to said body, a die set mounted in said die block, adapted to cooperate with said cutter blade, a latch for locking said die block to said body so as tohold said die set within said die block in relatively fixed position with respect to said movable cutter blade and means for operating said driving plunger, a pump handle pivotally mounted to said body and operably connectedto said driving plunger, and bail means pivotally connected to' said die block and/arranged to be looped over said pump handle so as to lock said pump handle to said body when lthe device is not in use.V

7. A portable manually operated tool for cutting cable or other elements, comprising a body member, agdriven hydraulic ram cooperating with a cylinder formed in said body, a reservoir for hydraulic medium located in said body, a driving plunger coacting with a hydraulic cylinder located in said'body, fluid passages connecting said cylinder cooperating with said driving plunger with the cylinder cooperating with said driven hydraulic ram, a cutter blade pinned to saidhydraulic ram and adapted to move with said ram, a die block pivotally mounted tosaid body, a die set mountedV in said die block, 'adapted to cooperate with said cutter blade,^a latch for locking said die block to said body so as to hold said die set within said die block in relatively nxed position with respect to said movable cutter blade and means for operating said driving plunger, mounted to said body and operably connected to said driving plunger, bail means pivotally connected to said die block and arranged to be looped over said vpump handle so as to lock said pump handle to said body when the device is not in use, and an extension element adapted to be connected to said pump handle soas to increase its length and thereby increase the leverage which may be vexerted upon said driving plunger.

PHIL S. PELL. ARTHUR F. WALLACE.

a pump handle pivotally,l

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