US587480A

US587480A - Attachment for turret-lathes

Info

Publication number: US587480A
Authority: US
Publication date: 1897-08-03
Anticipated expiration: 1914-08-03

Description

(No Model.) 3 Sheets-Sheet 1.

J. HARTNBSS. ATTACHMENT POR TURRBT LATHES.

Patented Aug. 3, 1897.

| wil WTNESEES: 1 ./JT NW. l Q @MQW Tm: "cams uns co. 10101 1 (No Model.) 3 Sheets-Sheet 2.

J. HARTNESS.

ATTACHMENT FOR TURRET LATHES.

!NVENTD Patented Aug. 3,1897.

FSA;

3 Sheets-Sheet 3.

(No'Model.)

J.y HARTNESS. ATTACHMENT POB. TURRBT LATHES.

No. 587,480. Patented Aug. 3,1897.'

NITED STATES ATENT Fries.

ATTACHMENT FOR TURRET-LATHES.

SPECIFICATION forming part of' Letters Patent No. 587,480, dated August 3, 1897.

Application filed .Tune 11, 1896. Serial No. 595,073. (No model.)

To all whom it may concern.:

Be it known that I, JAMES HARTNEss, of Springfield, in the county of Windsor and State of Vermont, have invented certain new and useful Improvements in Attachments for Turret-Lathes, of which the following is a specification.

This invention relates to metalturning lathes, and more particularly to turret-lathes of the type shown in my former patent, No. 457,967, granted August 18, 1891; and the invention contemplates certain attachments to such a lathe whereby one or more broad tools can be brought to bear on the work entirely independent of the turret and its adjuncts, while at the same time perfect control of such broad tools is assured. The invention also has in view to provide improved means for operating the tool-slide carrying the broad tools on the turret, whereby great leverage is obtained and accidents to the operator andto the parts of the machine avoided.

Although, as above stated, the invention has been specially devised for application to a lathe of the type shown in my former patent, No. 457 ,967, yet it is capable of adaptation to other types of lathes and is not limited in this respect.

With the above-stated objects in view the invention consists in certain novel constructions and combinations of parts, which are recited in the appended claims.

The drawings which accompany and form part of this specification illustrate an embodiment of the invention.

Figure 1 shows a side elevation of a lathe equipped with my improvements. Fig. 2 shows a section on line 2,2 of Fig. l, looking toward the right. Fig. 3 shows a sectionon line 3 3 of Fig. 1, looking toward the right. Fig. 4 shows a section on line 4 4 of Fig. l. Fig. 5 represents a top plan view showing the broad-tool attachment partly in section. Fig. 6 shows a top plan view, on an enlarged scale, of the turret attachment.

The broad-tool attachment as applied to a lathe of the type shown in my prior patent above referred to is of the followin g-described construction A main body or frame piece o, in the form of a hollow casting, embraces the automatic' chuck of the lathe, as shown more clearly in Fig. 5, and is securely bolted to the headblock a of the lathe, the latter being specially prepared for it. The frame`piece or standard o rises somewhat above the level of any part of the turret and constitutes a support for one end of a rod or bar b, extending longitudinally ofthe lathe and above the turret, beyond which is located a standard b to support one end of said rod. It will be seen that this rod or bar does not interfere in any way with the operations of the turret or its appurtenances. At a point a short distance from the standard a the rod or bar b supports a hanger o, which is rigidly affixed to it and is formed in its depending portion with holes receiving the ends of short shafts d, whose opposite ends are supported and fastened in the standard a. J ournaled upon these shafts are a pair of frames c and e', which constitute tool-holders and are designed to be swung upon the shafts into and out of operative position. Said frames are here shownas holding broad circular tools f, designed to turn bicycle-hubs; but of course various other forms of tools can be employed, according to the work in hand, and, if necessary, the holders can be modified to accommodate them. The tools are arranged to operate simultaneously on opposite sides of the Work, and the holder or frames e and e are moved toward each other by cams e2 e3, respectively, said cams bearing against the rear sides of the frames, which are formed with shoulders or surfaces suitable for the purpose, as shown in Fig. 2. It will be observed that these cams are cut away sufficiently to permit the tool-holders to be swung upwardly to or slightly beyond the horizontal when not in use. has a handle g, and intermeshing gears h h', carried bythe holders, transmit'the swinging motion, from one tothe other.

The cam e2 is affixed on a shaft e5, journaled in the standard ct and carrying a Worm-wheel e6, which is engaged by a worm e7, formed on a quill or sleeve e8, carrying a hand-wheel e9. A shaft elo extends through said sleeve and constitutes a support for it, said shaft being journaled in bearings on the standard ct and carrying at its outer end an operating handwheel en and at its opposite end on the other side of the standard a a worin cl2, which meshes into a worm-wheel cl3, affixed on the For this purpose one of theY holders.

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shaft 614, which carries the cam e3. A setscrew @15, entered through a boss on the sleeve e8 over a slot in said sleeve, provides means for locking the sleeve and shaft together, so that both tool-holders may be simultaneously operated by the turning of one of the wheels e9 or en. W'hen the set-screw is withdrawn, the said hand-wheels can be independently turned to separately move thev Jtool-holders.

Of course the cams could be worked by power through suitable connections, and it is within the province of my invention to resort to such an expedient when desirable.

Passing now to the improved turret attachment, it is iirst to be stated that this feature of my invention has been designed particularly to displace the lever shown in my former patent for feeding the tool-slide on the turret.

Referring to Fig. 6, the letter Il designates the laterally-movable tool-slide, which is formed in its rear edge with a rack, as usual, which is engaged by a pinionj on a spindlej. In the arrangement shown in my former patent a lever is attached to this spindle and is manipulated by the operator. In the present case a large gear-wheelj2 is afiiXed on the upper end of the said spindle, and a loose or idle gear js meshes with said large gear and also with a pinion jl, formed on or affixed to the stem of a handle pivotally mounted with its center of rotation coincident with that of the turret. This handle may be composed of a central boss j5, as shown, with radiating arms j, giving it the form of a pilot-wheel, or it may be an ordinary hand-wheel, such as e9, Fig. 3.

The purpose of the above-described means for operating the tool-slide is partly to obtain a greater leverage and partly to locate the handle centrally over the turret, so as to overcome an objection to the former arrangement in that the quick operation of the turret sends the lever flying loose to strike the operator or interfere with other mechanism of the lathe.

It is to be understood that the invention herein disclosed is capable of embodiment in different forms than shown, and is not therefore limited in this respect.

I claiml. An attachment for turret-lathes, comprising standards on the lathe-bed on opposite sides of the turret and at the ends of the turret-slideways and projecting beyond the plane of the top of the turret; a stationary rod or bar supported by said standards at the outer parts thereof and extending over the turret; and tool-holders swung from said rod or bar.

2. An attachment for turret-lathes,the same comprising a supporting-frame constructed and arranged to be mounted on the lathe without forming an obstruction to the turret or its adjuncts; one or more tool-holders pivotally supported at the outer part of said frame so as to swing laterally; and means for adjusting said holders on their pivots without permanent engagement therewith but with provisions for permitting the said holders to be swung free of said adjusting means to leave an unobstructed space for the turret and its adjuncts, substantially as described.

3. An attachment for turret-lathes, comprising a frame constructed to embrace the lathe-chuck; 011e or more tool-holders located outwardly beyond said frame to overhang the lathe-bed and pivotally supported from said frame; and means for controlling the position of said tool-holders with provisions for permitting the same to be swung out of the way to leave an unobstructed space for the turret and its adj uncts.

4E. An attachment for turret-lathes, comprising a frame constructed to embrace the lathe-chuck one or more tool-holders located outwardly beyond said frame to overhang the lathe-bed and pivotally supported from the said frame; and means for adjusting the hold- 4ers on their pivots with provisions for permitting the said holders to be swung out of the way, said means being arranged in the frame between the lathe-chuck and the lathebed.

5. An attachment for turret-lathes, comprising standards mounted 011 the lathe-bed on opposite sides of the turret and at the ends of the turret-slideways and projecting beyond the plane of the top of the turret; a fixed rod or bar supported by said standards and extending over the turret; a hanger fastened to and supported by said rod or bar; shafts supported between said hanger and one of the standards; and swinging tool-holders on said shafts.

6. An attachment for tur1'et-lathes,the same comprising a supporting-frame constructed and arranged to be mounted on the lathe without forming an obstruction to the turret or its adj uncts; one or more tool-holders pivotally supported at the outer part of said frame so as to swing laterally toward and from the work; and one or more cams engaging the holder or holders on the outer side to advance the same toward the work, with provisions for permitting the holder or holders to be swung free to leave an unobstructed space for the turret and its adj uncts, substantially as described.

7. An attachment for lathes, the same comprising a suitable framework or support, a pair of tool-holders pivotally supported by the same, cams supported behind said toolholders and bearing against them, and means for operating said cams with provision for simultaneously or independently moving them.

8. An attachment for lathes, the same comprising a suitable framework or support, a pair of tool-holders pivotally supported there- IOO IIO

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by, cams supported behind said tool-holders and bearing against them, Worm-Wheels associated with said cams, a shaft carrying a worm in engagement with one of said wheels, a sleeve or quill on said shaft and having a worm engaging the other of said wheels, and means for connecting together and disconnecting said shaft and sleeve.

9. An attachment for lathes, the same comprising a body 0r frame piece constructed to embrace the lathe-chuck, a rod orbar supported at one end by the said frame-piece, a support for the opposite end of said rod or bar, a hanger on said rod or bar, shafts supported between said frame-piece and said hanger, tool-holders pivotally mounted on said shafts, and means for controlling said tool-holders.

l0. In a turret-lathe, the combination with the laterally-movable toolslide, having a rack, of a spindle carrying a pinion in mesh with said rack and a larger gear-wheel, a handle pivoted over the middle of the turret and carrying a pinion, and a loose intermediate gear connecting said pinion with the large gear on the before-mentioned spindle.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 27th day of May, A. D. 1896.

JAMES HARTNESS.

Vitnesses:

E. R. FELLows, E. E. WOOD.