US776554A - Lathe. - Google Patents

Description

PATENTED DEC. 6, 1904.

R. F. SCOTT.

LATHE.

APPLIoATIoN FILED :mlm 2, 1904.

2 SHEETS-SHEET ,1.

Nl.) MODEL.

Wl TNESSES `lalnLErITLI) DBO. 6, 1904.

R. F. SCOTT.

LATHE.

APPLIUATION FILED JUNE 2. 1904.

2 SHEETS-SHEET 2.

d (m i w IVI T/IE SSE S N. N M I T A llNTTnn STATEs `Patented. December 6, 1904.

PATENT Ormea ROBERT F. SCOTT, OF PHILADELPHIA, PE

NNSYLVANIA, ASSIGNOR TO EDWIN HARRINGTON, ,SON AND COMPANY, INCORPORATED, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION.

LATHE.

SPECIFICATION forming part of Letters Patent No. 776,554, dated December 6, 1904.

Application filed June 2,1904. Serial No. 210,828.

(No model.)

.T0 all whom, t may concern:

Be it known that I, ROBERT F. SCOTT, acitizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain Improvements in Lathes, of which the following is a specification.

This invention is designed primarily to provide means for turning work of extended dimensions.

The nature and characteristic features of the improvements will more fully appear by referencefto the following description and the accompanying drawings in illustration therel of, of which- Figure l represents a top plan view of a lathe having my improvements applied thereto. Fig. 2isa side elevation, and Fig. Sis an end elevation thereof.

As shown in the drawings, the improvements are applied to a lathe comprising the bed l, having the head 2 and the movable extension-shears 3, between which and the head there is a gap 4. The head has secured thereto a strut 5, which supports an extensionguide 6, and the extension-shears have movable thereon the carriage 7, which supports an extension-guide 8.

Cross-slides 9 and l() engage the respective guides 6 and 8, in which they are moved by the respective screws 11 and l2, engaging the slides and journaled in the bearings 13 and 14 on the guides. Fixed on the ends of the screws 11 and l2 arethe beveled gears l5 and 16, which are engaged by the beveled gears 17 and 18, held against rotation on a shaft 19', journaled in the bearings 2O and 21, fixed to the extension-guides, the gear 17 being engaged by a spline 22, permitting the longitudinal movement of the shaft through the gear. The screw 12 has an extension 12', providing means for the engagement of a wrench or handle for operating the screws to move the cross-slides and tool-rest 23 supported thereby along the guides and adjust the position of the tool 24 with reference to the center 25, the tool being adjustable to pol sitions for working beyond the periphery of the face-plate 26 and turning the surface of a cylinder revolving in the gap and having a larger diameter than the face-plate.

The tool-rest 23 is permanently fixed to the cross-slide l0 and is guided in the cross-slide 9 by the wedging wearing-plates 27, movable in the bearings 28 on the slide by the screws 29. By adjusting' the position of the carriage 7 and the tool-rest 23 relatively to the bearings 28 the longitudinal extent of the operation of the tool 24 may be varied.

It will thus be seen that an extended cylindrical area may be turned by means of these improvements, which provide facility for doing work otherwise beyond the capacity of the lathe, a particular use therefor being found in turning and threading' drums for use in elevator mechanisms.

Having described my invention, I claim- 1. In a lathe, a bed, a guide connected with and extending' transversely to and beyond said bed, extension-shears movable on said bed, a carriage supported by said shears, a guide on said carriag'e extending transversely to and beyond said shears, slides movable on said guides and a tool-holder carried by said slides, substantially as specified.

2. In a lathe, a head, in combination with shears separated from said head by a gap, a guide connected with and extending transversely to and beyond said head, a guide connected with and extendingtransversely to and beyond said shears, and a tool-rest having cross-slides movable in said guides, substantially as specified.

3. In a lathe, a head, in combination with shears separated from said head by a gap, a guide connected with and extending transversely to and beyond said head, a guide connected with and extending transversely to and beyond said shears, a tool-rest, cross-slides movable in said guides and supporting said rest, and means for separating said slides and adjusting the position of said tool-rest with reference to one of its supporting-slides, substantially as specified.

ing gears thereon for engaging and revolving the gears on said screws, said shaft being movable through one of the gears thereon, substantially as specified.

1n testimonyT Whereotl I have hereunto set my hand, this 1st day of June, 1904, in the presence of the subscribing Witnesses.

ROBERT F. SCOTT.

l/Vitnesses:

THOMAS S. GATES, UTLEY E. CRANE, Jr.

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