US747942A - Pipe-cutter. - Google Patents

Description

'PATENTED DBG. 29, 19,03.

' f No. 747,942.

` COLOM Y MARCA.

' l PIPE CUTTER. APPLIOATIQN FILED .MAY a, 1903.

No MODEL.

M1 MAWXM um Patented eeemieer 29, 1903.

PATENT OFFICE.

BUENAVENTURA OLOM Y MARCA, OF BARCELONA, SPAIN.

PIPE-CUTTER.

SPECIFICATION forming pere ef Lettereratent No. 747,942, dated December 29,1903. Application filed May 6. 1903. y Serial No. 155.795. (No model.)

To all whom itma'z/ concerm Be it known that I, BUENAVENTURA OoLoM Y MARCA, a subject of the Kingof Spain, and a resident of Barcelona, in the Province of Barcelona and Kingdom of Spain, have invented certain new and useful Improvements in PipeOutters, of which the following is a specification.

This invention relates to pipe-cutters, and particularly to those designed for use in cutting boiler-tubes and the like, where the action on the tube is from the interior.

The objects of the invention are, first, to produce'a cutter and, in combination therewith, means for forcing the cutter into contact with the material operated upon and in the-provision of steadying-rollers and novel means for mounting therollers according to the 'diameter of the work operated upon;

second, to produce a cutter-head, cutters oper' ating therein, and, in combination therewith, steadying-rollers and novel means for mounting the steadying-rollers with relation tothe work operated upon, and means for securing the bearings of the steadying-rollers in the head; third, to produce a pipe-cutter in which the cutting members are moved with relation to the work operated upon and means for rotating the head and rollers.

A further object of the invention is to produce a pipe-cutterin which the position of the cnt may be determined by the adjustment of a gage with relation to the cutters, the said gage abutting the end of the tube to be operated'upon.

Further, an object of the invention is to produce a pipe-cutter which is applicable to varying diameters within predetermined bounds, the said cutters and guiding-rolls being in such relation as to permit the guide-rolls to act before bringing thecutters into operation.l

Finally, an object of the invention is to produce a pipe-cutter which will possess advan tages in points of utility, efticiency,`and durability, proving at the same time satisfactory in use and comparatively inexpensive to manufacture.

With the foregoing and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will be had to the accompanying drawings, forming part of this speciiicatiomwhereiu like characters denote corresponding parts in the several views, and in which- Figure 1 is a longitudinal vertical sectional view of the cutter. Fig. 2 is a similar view taken at right angles to the section of Fig. 1. Fig. 3 is a longitudinal vertical section of a slightly-modified construction to that shown in Fig. 1. Fig. 4 is a view in elevation of a series of bearing-blocks of graded sizes. Fig. 5 is an end view of the device. Fig. 6 is a sectional view taken on the line 6 6 of Fig. 2.

Fig. 7 is a sectional view taken on the lineA 7 7 of Fig. 3.

In the drawings, A denotes the head of the cutter,havingils rear end internally threaded at B for a portion of the distance, the said head having a way therein in which a sleeve C is seated,the said sleeve having an annular shoulder i),which is seated against ashoulder in the head. Ring-nut E is threaded in the end of the head and has its end bearing against the shoulder of the sleeve C, thereby retaining said sleeve in the head. vThe sleeve (l is internally threaded, and the shank F,which is threaded to engage the threads of the sleeve, extends through a portion of the head and terminates in a wedge-.shaped head G, the said wedge traveling in a'chalnber H, formed in the head. The sides of the wedge have ribs I, which travel in grooves J, formed longitudinally of the head, whereby the said Wedge is guided. Blocks K are slidable in-the head and have dovetailed connections L with the wedge, whereby as the wedge' is moved longitudinally of the. head the blocks are reciprocated. The blocks' are held in place and are guided by the end of the'head and the face-plate L', which is attached to the head by means of the screws. M.

The bearing-blocks N are slidable in recesses O, formed in the end of the head and in recesses of the face-plate M, andthe steadying-rolls Pare mounted in thebearing-blocks, and from an inspection of Fig. 4:,where a series of these blocks are shown, it will beobserved that the distance apart of the said rolls may be regulated according to the size of the bearing-blocks employed.

IOO

The gage Q is adj ustahle on the head and is moved in relation to the cutters iu order to determine the position of the cutters Within a tube or pipe. The collar R is held on the head by the screws S and limits the rearward movements of the gage. The head may have a Series of recesses for the points of the screws, there being two such recesses, shown side by side in Fig. 3, though they may be multiplied according to requirement. y

In the modification shown in Fig. 3 the parts are all duplicates of the parts heretofore described, except that in this modification the wedge G' has one beveled face,which acts in conjunction With' a single bearingblock K', while the opposite face of the Wedge rides on the wall Gr2 of the cutter-head. The wedge is dovetaled in the cutter-head and the bearingblock K is dovetailed on the Wedge. In this construction the bearingblocks N are the same as those employed in t-he double cutter; but I prefer to use the guideroll N' with a rib N2 thereon,which will follow in the cut made by the cutting-Wheel, and thereby act as a guide and steadying-roll.

Having fully described the invention, what I claim as new,and desire to secure by Letters Patent, is-

l. Inapipecutter,aheadhavingperipheral recesses adapted to receive a series of sets of dierential bearings for guide-wheels, means for retaining the bearings in position, blocks slidahle in the heads,cutter-Wheels jourualed in the blocks.

2. In a pipe-cutter, a head having recesses adapted to receive sets of diferential bearings, blocks slidable in the heads,cutterwheels carried by the sliding blocks, guide-wheels carried by the differential bearings, a face-plate having recesses to receive the dierential bearings and means for securing the faceplate to the head.

3. In a pipe-cutter, a head having recesses adapted to receive series of diierential bearings, a Wedge having a shank threaded to move longitudinally of the head, blocks slidable transversely of the head, means on the head for engaging the blocks,guiderol1sjournaled in the bearings and a gage adjustable on the head. y

In testimony whereof I afx my signature in the presence of two Witnesses.

BUENAVENTURA COLOM l' MARCA.

Witnesses:

H. M. DANNEEL, JOHN ALsINA.

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