US1660365A

US1660365A - Gearing for lathes

Info

Publication number: US1660365A
Application number: US191984A
Authority: US
Inventors: Adrian L H Verwys; Verwys Vincent
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-05-17
Filing date: 1927-05-17
Publication date: 1928-02-28
Anticipated expiration: 1945-02-28

Description

Feb. 28, 1928.

-A. L. H. VERWYS ET AL GEARING FOR LATHES Filed May 17. 1927 lnvenTov Adrian '.Verw Vinceni lerwgg 5- Mff Patented Feb. 28, 1928.

UNITED STATES PATENT OFFICE."

ADRIAN L. H. VERWYS AND VINCENT VERWYS, 10F GRAND RAPIDS, MICHIGAN.

GEARING FOR LATHES.

This invention relates to an improvement in woodturning lathes and is more particu-- larly concerned in improvements in the mechanism shown in the issued patent to James Hoogerhyde, No. 1,546,447, issued July 21, 1925. I

In thepatent to Hoogerhyde the part of the machine which holds the work to be turned is moved backand forth, toward and away from the cutters which act upon the work. It is desirable at times that such work shall not have any rotativemovement, this being efiected by disconnecting certain driving gearing. It is also, by reason of the swinging mount of the part of the machine which carriesthework, necessary for the practical operation of the machine to provide proper mountings of the parts to permit movements for effecting such gearing connections and disconnections without binding or cramping, and it is primarily to these ends that the present invention. is directed, to produce a practical andoperative construction which eliminates all cramping and binding between theparts so that the necessary movements forveffecting connection or disconnection of the gearing which controls the rotating movement of the work may be made.

The constructionfor the attainment of these ends,.as well as many others not specifically stated at this time, will be apparent from the following description taken in connection with the accompanying drawing,. in which, v

Fig. 1 is an end elevation of the WOOd turning lathe, certain parts being removed and shown in section.

F'g. 2 i s an enlarged elevation of the gearing used for controlling the rotation of the work,-the gearing being shown connectedin Fig, 2, while in Fig. 1 it is shown disconnected, and 7 Fig. 3 is a fragmentary enlarged front elevation, with parts in section to better illustrate the construction, the plane of sec.- tion being substantially on line 3-3 of Fig.1.-

Like reference; characters refer to like parts in the different figures of the. drawmg.

The pedestal or'main support for the machine is indicated at 1 and at its upper end it carries a rotating series of cutters (not shown) which. are driven by a motor 2.

Bracket arms 3. are attached to the front of the main support 1 extending substantially horizontal, therefrom. A rock shaft 4 is rotatably mounted between and carried by the arms 3 to which a handle 5 is attached for the purpose of manually rocking the shaft. An arm (Sis connected to the shaft 4 and one end thereof is connected by link 7 to the tilting frame 8which supports the WOIk;

holding devices. I 7 Frame 8 1S p1votally mounted at 1ts lower end on a shaft 9 which in turn is carried in suitable bearings. extending forward from At the upper end and to one side of the frame 8 a housing 10 is permanently secured into which a shaft 11 extends on which a worm wheel 12 is secured. The rotation of the wheel 12 controls therotation' of the head stockspindle carried by frame 8,With

which the Work isconnected in the operation of the machine, 1

A horizontal partition'13 extends from the frontside of the housing 10 forward a distance being'located above the bottom of the housing and at its upper side and near its end having a concave bearing surface, as best shown in Fig. 2, while the upper end of'the housing is similarly concaved but in the oppositefdirection, as indicated at 14. A stirrup member having two ends or heads 15; and 16 connected at one side'by a vertical section 17 is mounted between the upper end 14 ofthe housing and the partition 13, the upper and lower-sides of the two

heads

15 and 16 being of convex shape so as to'fit the concave bearing surfaces at 14 and on thepartition 13. i

'A'shaft 18 lies along theend. of the tilting frame 8 and at its upper end passes into the housing 10 and through openings in thepartition 13 and head 16, said openings being elongated and longer than :the

diameter of the shaft. A Worm 19is secured to the upper end portion of the shaft 18. The upper end of the shaft is rotatably mounted in a bearing 20 which is directly below the head 15-while the shaft below said worm passes another bearing 20 located against the-upper sideof the part 16.. The two bearings 20 are connected by vertical bar ZO -and thesame are held in position by plates and 16 secured to the free edges of the

heads

15 and 16 previously described. with their connecting member E20 may have a limited sliding movement so as to connect the work 19 to the work-wheel 12 or disconnect it therefrom. As will later be described the worm 19 normally is in engagement with the wheel 12. i i a Shaft 18 at its lower end extends through a housing 21 fixed to the lower end of the frame 8 as shown in Fig. 3. Within said housing the shaft is equnqpcd with two bevelled gearsifl spacedapart and idle on theshaft both being in mesh with a bevelled goal-S23 fixed on the end of a drive shaft 24: located in direct alignment with the shaft 9; A suitable reversing clutch 25 for the purpose of Connecting either gear 22 with the shaft 18 is mounted on said shaft 18 between the To the connecting bar 20" between the bearings 20 a. rod "QClll'GCl which extends forward through the front side of the. housing 10 and is equipped with alcnoh 26 for manual operation. .A spring 26 is located around the rod as shown in Figs. 1 and i2 and its normal effect is to move the worm 19 into engagement with the work wheel 12; However, by grasping the knob and pulling outwardly on the same-the spring may be compressed and worm and wheel 12 freed from engagement with each other. The knob is equipped with the usual finger which, when the knob is pulled out and turned engages against the outer side of the housing so as to hold theparts disengaged. Y There is also associated with the machine the lever 27 pivotally mounted be tween its ends on one end of the tilting frame 8, one end of the lever extending up wardly intothe housing and engaging with the vertical connecting bar 20* whileth'e "other end is equipped with a roller to ride i on a cam 28 fixed to one end of the main 1 support or pedestal 1. i

When the tilting frame 8 with the mechanism' mounted thereon is moved forward to the position shown in Fig. land the work is movedaway from the cutters, there occurs an automatic disconnection of the worm 19 from the worm wheel 12; and when it is tilted. in the opposite direction to bring the work in conpiiiction with the cutters, before which conpinctioii of cutters and i work occurs the worm and worm wheel are brought into connection by the spring 26 which is free to act when the lowerend of lever 27 passes infront ofthe cam 28. It is also evident that by use of the ,knob 26' such disconnection of the worm and worm wheel may be made at anytime irrespective of the position of the work with respect to'the-cutters. This may hedesirable at timesgf I i ri I In this wa the two bearin s 20v In any case whenever, the worm 19 and the worm wheel 12 are connected or'disconneeted, the shaft 18 turns about the axis of the shafts 9 and 2d and the bearing made by the

heads

15 and 16 connected between member 17 has a self aligning rotative movement about a center midway between the two

heads

15 and 16. This obviates any tendency of the parts to cramp or bind which otherwise would occur. This is a primary feature of importance in the present invention, naincly, the prevention of this cramping and binding action when the shaft result byequivalent means comprehended by the claims appended hereto definining the invention.

We claim; i

i 1. In a machine of the class described, a main support,-a tilting frame mounted on then'iain support to move towardor away therefrom, a driven shaft paralleling one end of the main support and ti-ltable therewith, a gear adapted tobe driven by said shaft, gearing on said shaft to engage With said gear, means normally tending to hold said gearing and gear in engagement, means for automatically separating said gearing and gearon outward tilting movement of the tilting frame, bearings for the upper end of said shaft, a self aligning movable support for said bearings through the lower end of which the shaft passes having convexed upper and lower ends andbearing members having concave surfaces with which said convexed surfaces engage, sub stantially as and for the purposes described.

2. In a machine of the class described, a main support, a tilting frame mounted at thefront of said main support for movement about a horizontal axis toward or away from the. main support, a driven shaft paralleling one end of the tilting frame and movable with saidfraine, a housing'carried by the tilting frameinto whichtheupper end portion of said shaft is received, a' second shaft extending into said housing, a worm wheel on said second shaft, aworm on the first shaft to engage with said worm wheel, bearings for the upper endof the i Y first shaft, a member carryingisaid bearings having curved upper and lowerends, the upper ends of said member engaging against main support, a substantially vertical framev mounted at its lower end on said main support to tilt about ahorizontal axis and move toward or away from said main support, a shaft located alongside one end of said tilting frame and movable with said frame, a housing at theupper end of the tilting frame into which the shaft passes, a second shaft extending into said housing, a worm Wheel on said second shaft, a worm on said first shaft adapted to engage with said wheel,

a movable bearing at theuppe-r end of the first shaft whereby it maybe moved so as to engage the worm with or disengage it from the worm wheel, and a self aligning member mounted within the housing and movable to different positions about a relatively fixed center on which member said movable bearing is supported whereby the first shaft may be freelymoved with respect to the second shaft and the worm wheel carried thereby V 4'. .In a machine of the class described,'

a main support, a frame located in front of the main support and tiltably mounted at its lower end on saidsupport to turn about a horizontal axis toward or away from the support, a shaft mounted along one end of the tilting frame and movable therewith, a second shaft mounted horizontally at the upper end of the tilting frame, interengaging gearing on said shaft for driving the second shaft from the first shaft when said gearing is in engagement, said first shaft being movable about the tilting axis of the tilting frame to disengage said gearing, and a support for the upper end of said first shaft carrying bearings for the shaft, said support beingv shiftable'. about a relatively fixed center and having ends formed as arcs of circles about said center, and means bearing against each end of the said support having curved surfaces to conform to the curved surfaces on the ends of said support.

In testimony whereof we aflix our signatures.

V ADRIAN L. H. VERWYS.

VINCENT VERWYS.