US1777515A - Cutter chain - Google Patents

Description

Patented Oct. 7, 1930` UNITED STATES PATENT. OFFICE FRANir CARTLIDGE, or CINCINNATI, OHIO, AssIGNon To BERTRAND r. TRACY, F

i s. y rITTsIsURGH, PENNSYLVANIA ;oUTTER CHAIN` Application ledV QctolierlZ, 1929; Serial iNo. '396,676.`

This invention relates to cutter chains and particularly to cutting tools and supplementary sockets therefor. n

Heretofore cutter chains of the endless type have .been constructed and employed for of success; prior artv devices have each been" provided with a socket for receiving the, bit of thefcuts ting tool. This `form.` otconstruction has v proven unsatisfactory because the wall of the sockets break downV and allow the bit of the cutting tool to move in the socket. With continued use of the chain, the links Vin which the sockets are located finally break or become so battered and worn that new links must be replaced inthe chain and the replacements of the links have been so frequent that maintenance charges have been very '2Q high and expensive.

Removable supplementary sockets have also been tried and applied to cutter chains of the type referred to above, but Vhave not proven satisfactory because the supplementary sockets have failed in practice in substantially the same manner as the cutter chains which did not include supplementary sockets. Y

Accordingly7 it is an object of the present invention to provide an improved supplementary tool bit socket for links of cutter chains that shall be simple in construction, efiicient in operation and easily manufactured and installed.

vAnother object of the invention is to provide an improved supplementary socket and tool bit that shall not become loose and there by break down the walls of the socketV in the link. A further object of the invention isto provide for rigidly supporting the bit o a cutting tool in the sockets of the cutter chain links.

Other objects of the invention will, in part, be obvious and will, in part, appear herein- 'after fromthe following description taken in conjunction with the accompanying drawL y.

ings in which Figure l is a view in perspective of a link plementary socket; A breasting coal in mines with varying degrees Thelinks of the chainsof .the

`socket2 ofthe link.

.for a cutter chain having a cuttingtool and supplementary socket arranged and constructed in accordance with the invention;

Fig. 2 is a view in perspective of the sup- Fig. 3 is a rear plan view of the socket shown in Fig. 2;

Fig. 4 is a view in perspective of the cut-` ting tool shown in Fig. l; and V Fig. 5 is a rear plan view of the cutting tool shownvin Fig. 4.

In F ig. l of the drawings a male link l for a cutter chain is shown; Since cutter chains embodying the Alink l Vareemploved in the coal fields for-breasting coal` and are well V known in the-art; it is not necessary toshow and describe` in `detail a complete cut-ter" chain. p Y I fThelinkl-is vprovided. with a socket 2 inclined at an angle with reference to flangesB of the link. The socket 2 is preferably rectangularly in transverse section. The long sides 4 of the socket 2 arepreferably pro` vided `with semi-circular recesses 5 and 6 eX- tending the full depth of the socket.'

A supplementary socket 8 having a slot 17 of substantially -Vshape is disposed in the socket 2. The supplementary socket 8 is provided .with flanges 9 and `l0 that aregdisposed to seat upon thelink l adjacent tothe short sides ofthe Asocket 2. The socket 8 isv also provided with longitudinallyextending circular bossesllon vthe outer `faces of the legs l2 of the socket,'.the bosses 1l being disposed to fit snugly into the recesses 5 and 6 of the Inorder that the supplementary socket 8 be held firmly in thesocket 2, a slot 13 is provided at the lower end thereof. The lower end of the socket 8 may then be spread or 90 flared. outwardly as indicated by the Vbroken lines in Fig. 3. The supplementary socket 8 may, therefore, vbe driven into the socket 2 and held firmly therein bythe friction exerted between the lowerend of the member 8 `9:5 and the walls of thercesses 5 and 6 of the socketj 2. 1

Since the supplementarv socket-8 is removl able from the link l, it may be made of metal that will withstand the strains to which itis subjected in practice Without undergoing any material deformation. The supplementary socket 8 may also be heat treated so that the desirable metallurgical characteristics may be obtained conducive to long life.

Since the sides of the supplemental socket is provided With the semi-circular bosses v11, the thickness of the Walls is such that great strength and rigidity are obtained. The metal ofthesimplemental socket will, therefore, not be fatigued to such an extentthat' it will break down or crumble in operation. The cost of maintenance of cutter chains in-k cluding the supplemental-socket Siof the type shown and described Will, therefore, be reduced to a minimum.

The supplem'entray socket 8 is disposedto receive a cutting tool bit 15,'the-upper'end of which terminates-in awcuttingpoint 16.

.The tool bit and the cutting point 16 are vented fronr moving longitudinally of the supplementary socket 8, the bottomof-.tlie V-sliaped slot 17 in the socket and the edge-18 of theL` tool bit are" provided With notches similar to savs7 teeth. When the tool bit 15 @is mounted in place as .shown inv Fig. 1, the

notches inthe bottom of the V-shapedslot of the tool bit intermesh to therebyv preventl the toolv bit from moving:longitudinallyv of the -V--shaped fslot' 17 in the' supplementary socket 8l. A

In order tofir'mlyt locky the cutter toolfbit 15 and vthe* supplementary socket in place, av setscrewf21 may beA providedY (see Fig. 1).`

The set screw- 21rextends longitudinally along the top 'of the/linkfand the end thereof'presses firmly against Ythe broad edge 22 'of the'tool bit 15.

While onlyvthe male link for a cutter chain has been shown, it is toV beunderstood 'that y the femaleflinks may be similarlyconstrulcted so .far asthe supplemental socket'S vand the slot therein of substantially V-shape, and a cutting tool having a bit of substantially V- shape disposed i'n the slot of the supplemental socket in complemental relation thereto.

2. In combination, a link for a cutter chain having afsockettherein and longitudinally extending recesses-in thewallsof said socket, a supplemental socket disposed in the socket, said supplemental sockethaving longitudinally extendingbos'sesf'disposed" in Ycomplemental relation "to the longitudinally extending. recesses, said supplemental socket being provided also With a tool bit receiving slot ofsubstantiallyfVi-shape in section, and a cutting tool including a tool bit of substantially V-Shape-disposed in theslotfof the supplemental. socket 'ini complemental relationthereto.

3-.1-A`-suppleme1ita1l socketfor a cuttercham having aL slot/of substantially 'V-shapef thereinl and sawA tooth like projections-at the bot-` scribed: myf name this thday1 of September,

' FRANK' f CART-LID GE;

`17 andy the notches :disposed along thev edge cutter bit 15 are concerned. The emalelinks 'j mayv be provided with a socket 2in .thesame :manner as the male link 1.

Vhile various modiications and `|changes may be made Vin the-cutter chainllinks andfthe y supplemental-sockets and the cutter bits Without departing fromv the spirit and kthe scope of the-inventiomit is Vto* bey understood that only such limitations shall beplaced on the invention asV areimposed by the prior art' i and the appended claims.

What -I claim as lnew andV desirev Vby Letters-Patentis:

to secure 1. In-combinatioma linkfo'ra cutter chain

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