US727440A

US727440A - Cutting-tool for lathes.

Info

Publication number: US727440A
Application number: US10836802A
Authority: US
Inventors: Emil H Rabiger; Robert G Rabiger
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-05-21
Filing date: 1902-05-21
Publication date: 1903-05-05
Anticipated expiration: 1920-05-05

Description

No. 727,440. PATENTED MA'Y 5, 1903. E. H. & R. G. RABIGER.

CUTTING TOOL FOR LATHES. APPLIUATION FILED MAY 21, 1902.

N0 MODEL.

'UNTTE STATES Patented May 5, 1903.

PATENT OFFICE.

EMIL H. RABIGER. AND ROBERT G. RABIGER, OF PHILADELPHIA, PENNSYLVANIA;

CUTTING-TOOL FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 727,440, dated May 5, 1903.

Application filed May 21, 1902.

To all whom, it ntay concern.-

Be it known that we, EMIL H. RABIGER and ROBERT G. RABIGER, citizens of the United States, and residents of Philadelphia, Pennsylvania, have invented certain Improve.

ments in Cutting-Tools, of which the followin g is a specification.

The object of our invention is to so construct a cutting-tool for a metal-turning lathe as to facilitate the turning of concave portions of the work, such as rounded grooves or fillets in angles. This object we attain in the manner hereinafter set forth, reference being had to the accompanying drawings,in which- Figure 1 is a side view, partly in section, of sufficient of a lathe turning-tool to illustrate our invention. Fig. 2 is a top or plan view of the same; and Fig. 3 is a sect-ion on the line a, a, Fig. 2.

1 represents a part of the shank of a lathe turning-tool intended to be clamped in the tool rest or carriage of the lathe in the ordinary manner, this shank terminating in a gooseneck 2, the outer depending member of which constitutes a bearing for a vertical shaft 3, said shaft having at the lower end a collar 4, which bears against the lower end of the outer member of the gooseneck and serves as a seat for the cutting-tool 5, the latter being perforated for the passage of the shaft 3 and being held in contact with the collar 4 by means of a nut 6,applied to the threaded lower end of said shaft 3.

The cutting-tool 5 is locked to the shaft 3 and its collar 4 by means of a pin 7, projecting from the collar and entering an opening in the cutting-tool, or the said cutting-tool may be otherwise prevented from turning independently of the shaft-as, for instance, by imparting to that portion of the latter which passes through the cutting-tool a square or other polygonal shape.

The upper end of the shaft 3 has keyed or otherwise positively secured to it a wormwheel 8, held in place vertically by a nut 9 and lock-nut 10, and said worm-wheel meshes with a worm 11 on a shaft 12, which has its bearing in an eccentric sleeve 13, mounted in a lug or projection 14 on the top of the gooseneck 2, said eccentric sleeve having a projecting arm 15, which plays in a slot 16 of the Serial No. 108,368. (No model.)

projection 14, whereby when the sleeve is in one extreme position of adjustment, as shown in Figs. 2 and 3, the worm 11 will mesh with the worm-wheel 8, so that movement can be imparted to the latter by turning a disk 17, which is secured to the shaft 12. When, however, the eccentric sleeve 13 is in its other extreme position of adjustment, the worm will be moved out of mesh with the worm-wheel 8, and the shaft 3 can be turned independently of the shaft 12as, for instance, by means of a wrench or other implement applied to the squared and projecting upper end 18 of the shaft 3. This latter plan may be resorted to when quick movement of the cutting-tool is desired.

The shaft 12 projects beyond the disk 17 and is squared or otherwise shaped, as shown at 19, for the reception of a wrench or other implement, whereby the shaft may be turned when a slow but extremely powerful movement of the cutting-tool 5 is required. Ordinarily, however, the work to be done will not require any greater amount of power than can be conveniently exerted by turning the disk 17 by hand, the periphery of said disk being, by preference, knurled or roughened, as shown at 20 in Fig. 1, so as to permit of a good hold upon the same.

The cutting-tool 5 can be readily removed and another tool of different length substituted for it, depending upon the radius of curve of the cut to be made. Hence our invention very materially facilitates the class of work for which it is intended-that is to say, the cutting of grooves, fillets, or other concave portions of the work.

In some cases the use of the worm-gearing as a means of imparting movement to the shaft 3 may be dispensed with, and the latter may be directly operated by means of a wrench or lever, or some other form of gearing may be substituted for the worm-gearing; but the use of the latter is in most cases to be preferred.

Having thus described our invention, we claim and desire to secure by Letters Patent 1. The combination of the shank of a lathetool having a gooseneck thereon, a cuttingtool removably carried by the outer member of said gooseneck, and mechanism carried at the top of the gooseneck for moving the tool independently of the said shank, substantially as described.

2. The combination of the shank of a lathetool having a gooseneck thereon, a shaft extending longitudinally through the outer member of said gooseneck, a cutting-tool carried by the end of the shaft farthest from the bend of the gooseneck and mechanism on the bend of the gooseneck operatively connected with said shaft for turning the same and with it the tool, substantially as described.

3. The combination of the shank of a lathetool with a gooseneck thereon, a shaft extending longitudinally through the outer member of the gooseneck, a cutting-tool on what is normally the lower end of said shaft, a second shaft carried at the top of the gooseneck and normally lying in a plane at right angles to the line of the first shaft, and mechanism operatively connecting said two shafts, said second shaft lying at an angle to the line of the lathe-tool, substantially as described.

4. The combination of the shank pf a lathetool having a gooseneck at one end, a shaft extending longitudinally through the outer member of said gooseneck, a cutting-tool removably fixed to the end of said shaft farthest from the bend of said gooseneck, a gear.- wheel fixed to the opposite end of said shaft, a bearin g carried on the top of the gooseneck,

a second shaft also carried thereon in a plane at right angles to the line of the first shaft and at an angle to the line of the lathe-tool, means carried by said second shaft for operatively connecting it with the gear on the first shaft, and means for connecting or disconnecting the second shaft and the first shaft at will, substantially as described.

5. The combination of the shank of a lathetool having a gooseneck, a shaft carried in a bearing formed longitudinally through the outer member of said gooseneck, mechanism for revolving said shaft at will independently of the gooseneck, a collar carried by the end of the shaft farthest removed from the bend of the gooseneck, a projection on said collar extending parallel to the length of said shaft, and a cutting-tool having a portion constructed to extend around said shaft and engaging said projection, and means for removably holding said tool in position, substan tially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

EMIL H. RABIGER. ROBERT Gr. RABIGER.

\Vitnesses:

MURRAY 0. BOYER, J 0s. H. KLEIN.