US2520342A - Tool - Google Patents

Description

s S 0 R 0 TOOL Filed March 8, 1950 INVENTORY. Z561 6 1%65.

I -III mIQ v/m Patented Aug. 29, 1950 UNITED STATES PATENT OFFICE V TOOL Iver-C. Ross, Springfield, Mass. b Application March 8, 1950, Serial'No..148,377

3 Claims. (01. 77- 58) My invention relatesto new and useful improvements in tools and is directed moreparticularly to the provision of a tool adapted for boring and similar operations.

It is the principal object of my invention to provide a novel and improved construction of the type in which a tool has a tool carrier which is movable transversely relative to the axis of r0- tation of the device and there is the further provision of a means whereby the carrier may be moved manually or automatically all as may be desired, which improvements will eliminate the now present objectionable inconveniences in prior art tools.

With the above primary object in view, it is another object of my invention to provide a construction of the above described character which is relatively simple and compact in accordance with the demands and desires of manufacturers and purchasers alike and which is not only practical in its value but also reliable in its operation and thoroughly eificient in its use.

It is a still further object to provide a device which is constructed of relatively simple parts which are adapted to be readily assembled and which when once assembled are positively and securely retained in operative relationship and which cannot be readily separated from each other, either accidentally or otherwise.

Other prime objects of my invention include: first, the provision of a simplified construction and arrangement of components of a tool so as to provide an end product which is strong, durable and compact in its structure and is distinctive in its appearance; second, the securement of a higher degree of accuracy in the manner of work performed therewith than has heretofore been possible with prior devices known in the art; third, the attainment of a higher degree of speed of construction and assembly of the device due to its simplification in design and its unique composition of parts; fourth, the attain- ;ment of a flexibility of a capability of adjustment by which a large variety of work can be produced .by means of the same device; fifth, the achievement of a greater ease in adjustment and repairs; sixth, the provision of an improved tool which may be made more economically and with fewer operations in the manufacture of its parts, as well as in the assembly of the same, than prior devices known in the art, and seventh, the provision of a construction which may be readily installed with respect to the various purposes for which it is intended.

1 All of the; above objects} accomplish by means of such structure and relative arrangement of parts-thereof, as will fully appear by a perusal of the description below and by various specific features ,whichwillbe hereinafter set forth.

. To the above cited and other ends and with the foregoing-and various other novel features and adwantages and otherobjects of my invention as will become. more readily apparent as the description proceeds, my invention consists in certainnovel features of construction and in the combination and arrangement of parts, as will be hereinafter morewparticularly, pointed out in the claims. hereunto annexed and more fully described and referred to in connection with the accompanying I drawings wherein:

r Fig. 1 is a small scale side elevational view 0 a tool embodying the novel features of my invention; l

i Fig. 2 is a-plan view of the tool shown in Fig. l with the shank thereof removed;

1 Fig, 3 is a view similar to Fig. 2 with the upper rings removed from the tool;

Fig. is a longitudinal sectional elevational view of the tool shown in Fig. 1; l r

Fig. 51s an inverted plan View of the eccentricrin'gof the tool; i

1 Fig; 6 is afront elevational view of the pawl invention; 1

carrier and ratchet ring of the device of my Fig. 7 is a plan view of the pawl carrier shown in Fig. 6;

to and forming a part of this specification, I

have shown but one'embodiment of my invention which is deemed preferable, but it is to be understoodthat changes and modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

f"iReferriiig now to the drawing more in detail,

and referring more particularly to the preferred form ofymy invention, selected for illustrative purposes, I have shown a tool which includes a cylindrical body 2 which is hollowed out or other- ,wise provided with acavity at 4 such as is best shownjinFigA.

shank :or Sea a started to be received is i eib e of a sp e chuck t 3 rotation of the tool. A flange 8 of the stem 6 is secured to the upper side of the body 2 by any suitable means.

Openings represent screw holes for receiving screws which secure the flange 8 to the body 2.

The upper portion of the body 2 is reduced in diameter so as to provide a circular hub [2 above aledgeon shelf 14 and .a.recess 14 for a gear is provided in the upper side of the hub" l2 as may be observed by reference to Fig. 3.

A lower ring I6 is disposed around and rotatable relative to the body 2 and a lock ring I8 is in threaded engagement therewith, as shown me.

18 has a flange l8 for clamping or binding on the flangeof the gear" 20 between'the-respective rings a so as to" prevent 1 rotationof" the gear relativeto the rings. -W-ith' the lock 'ring being screwed upwardly, the gear 20 is; released for rotation as will be appreciated Witliithe: flange 22 of the'ring gear 20 clamped to' thetring: lfiiby ring l8 the ring gear may: be rotatediby rotating-ring l6.

A gear 24 disposedinthezrecessa l4 isainmesh with the teeth of. the gear .20: andiitihas ashaft zl-igio'urnalled inath'ei bodyz whiehacarries a bevel gear 24" disposed: in theeavityn ofithe'bo'dy. 2.

A bevel gear 253:, a worm 305 and a ratchet. 32 are. integral and. are. disposed in:- the: cavity; 4. They are rotatable on screws 34 which are in engagement with the bodyat. opposite ends" of the cavity 4, all as. is shownainz Fig, 4-.

Av tool carrier. 3H,. an end. view: of which is shown in Fig. 9, isshdable: back: andwforth in a groove of well! known form: which is provided in the lower side ofthe bodyi A: hub 0f the. slideisprovided witha socket 40 for a tool and there may ibe:a-= tappedhole'. 38

for a set-screw to secure. a; tool. in the said socket 40.

The upper side of the slide is provided with teeth or threads with which the: worm 3fl-is in engagement, as shown.

As the gear 2-4 is-rotated,, in- One direction or the other in its recess 24- and; relative. tothe body, the slide 36 is moved through gears-214.", 28. and 30 in one direction orqthe other toposition the cutting edge of a tool carried by said member 36, relative to. the axis otrctation of the. body and. shank. That is, theftool' of slide 36 may be positioned-relative. to the. axis of. rotation of the device as may. be desired.

The rotation of the gear. 241s accomplished by clamping or looking thegear 22. between the rings [6 and [8 and.rotating.the ring 16" relative to the body 2". i

The skirt [6' of thering, [6 may carry gradiiations which are registrable with a zero index on the body 2 so asto. indicate the relationship ofthe tool of 'the slide 36 relative tothe' axis of rotation of the body 21 Suitable means not shown. may be. provided for rele'asably locking the ring IGto the body. 'Thus', when. ring it" is free to turn relative to the body and. when the ring gear 20 is clamped thereto by ring [8" relative rotation of the saidrings and bodywill'bring about movement of gear 24 and of the slide relative to the longitudinal axis of the body for moving the tool relative to said axis.

A pawl carrier is reciprocable in the body transversely to the axis of rotation thereof and is slotted longitudinally, as shown in Fig. 7. Pawls 52 in said slot are pivoted at 54. A spring 56 presses the pawls downwardly (see Fig. 6)..

A pawl'ring 58is provided aroundlandi'in which the ratchet 32 is rotatable. A ring actuator 60 is rotatable in the body 2 and has a pin 62 disposed in a slot 64 of the ring 58. By turning the member 66 in one direction or the other, the ring58. is turned on the ratchet 32 in one direction' or the other.

Thering'58isopen or slotted at 66 on the upper side thereof as shown in Fig. 6 and according-to-the position of the opening 66 one or the other of the pawls 52 engages the ratchet 32 and urges it in one direction: as the: member 51! is reciprocated The. actuator is held against. longitudinal. dis:- placement by a spring pressed detent 6|: engaging an. annular. groove' thereofcall as is shown in Fig. 8.

In the position of the; parts shown in: Fig. 6, as the member 50: moves to the..left,. the right hand. pawl. engages'and: moves the ratchet 001.111.- terclockwise and: the pawl at the left: is.- held. by thering from engagement with the ratchet. If the ring 58; is turned. counterclockwise by the member 60,,the' pawl at the: left engages and urges the ratchet clockwise as the member 50 moves to. the right. The. .positionofthe ring 58 controls thegaction. of the pawls.

The ring. lfi-;hasa central depending eccentric portion it. (see Fig. 5). A ring ii therearound .is provided with a pin 72 depending therefrom which. is disposed in a hole. 14 of the pawl carrier 50;

With the shank secured ihza rotating member and. the rings. [6' and iii in unlocking relation so that the ring. gear. 20- is free to turn onthe hub ii of. the body,.the. ring It. may be. grasped and held against rotation. The. ring Ti then retateawiththerbody sothat the eccentric portion ofthering ifi movessaidming i9 back and forth transversely of. the .axis of rotation ofthe body whichbrings about a back and forth movement of: thepin llrelative to the axis of rotation of the. body. so that-pawl. carrier 50" is recipro'cate'd back andforth in the body. In this way one of the pawls of' the. carrier 58 engages the ratchet, ineach. movement of" the carrier'in one direction so that the slide is moved outwardly in a step-by-step manner. Thus While the body isin. rotation. by holding the ring" t6, the slide 36 is. moved inlone direction or the other'in" a step-by-step manner by the reciprocation of the member 50.

Thus itiwill be seen thata cutting toolmay'be positioned relative to the axis'of rotation of the body all asmay be desired'forvarious machining operations, or the' tool may be movedin' a stepby-st'ep manner relative tosaid"- axis of rotation for the desired machining operations.

The invention may be embodied in" other specific forms without" departing from-the essential characteristics thereof. Hence, the present embodiments are therefore to be" considered in all respects merely" as'being illustrative and' not as being restrictive; the scopeof' the *invention'bein'g indicated bythe appended claims rat-hertham by the foregoing description, and all nmdifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

l. A tool of the class described comprising in combination, a body having a shank for engagement by a rotating member for rotating said body, said body provided with a recess and a cavity, a tool carrier reciprocable in said body below said cavity, gearing rotatable in said cavity operably engaging said slide for reciprocating the same, a driven gear in said recess and operative connections between said gear and said gearing, a ring gear in engagement with said driven gear and rotatable on said body, a lower ring rotatable on said body, and a lock ring threadedly engaging said lower ring for releasably locking said ring gear thereto, whereby said carrier may be reciprocated as the ring gear is locked to the lower ring and rotating said ring relative to said body, a ratchet integral with said gearing, pawl mechanism for actuating said ratchet and gearing reciprocable in said body, and actuating means for said pawl mechanism operable as said body is being rotated and lower ring is held for relative rotation of said body and lower ring and said ring gear is released by said lock ring whereby said carrier is reciprocated in said body in step-by-step manner, said pawl mechanism including a member reciprocable in said body having separate ratchet engaging pawls swingable therein and a central member oscillatable relative to said ratchet engageable with said pawls to hold one or the other of said pawls out of engagement with said ratchet.

2. A tool of the class described comprising in combination, a body having a shank for engagement by a rotating member for rotating said body, said body provided with a recess and a cavity, a tool carrier reciprocable in said body below said cavity, gearing rotatable in said cavity operably engaging said slide for reciprocating the same, a driven gear in said recess and operative connections between said gear and said gearing, a ring gear in engagement with said driven gear and rotatable on said body, a lower ring rotatable on said body, and a lock ring threadedly engaging said lower ring for releasably locking said ring gear thereto whereby said carrier may be reciprocated as the ring gear is locked to the lower ring and rotating said ring relative to said body, a ratchet integral with said gearing, pawl mechanism for actuating said ratchet and gearing reciprocable in said body, and actuating means for said pawl mechanism operable as Said body is being rotated and lower ring is held for relative rotation of said body and lower ring and said ring gear is released by said lock ring whereby said carrier is reciprocated in said body in step-by-step manner, said pawl mechanism including an elongated member having opposed pawls swingable therein for engaging said ratchet and a control ring oscillatable around said ratchet adapted to permit one only of said pawls to engage said ratchet, and a member in said body for oscillating said ring.

3. A tool of the class described comprising in combination, a body having a shank for engagement by a rotating member for rotating said body, said body provided with a recess and a cavity, a tool carrier reciprocable in said body below said cavity, gearing rotatable in said cavity operably engaging said slide for reciprocating the same, a driven gear in said recess and operative connections between said gear and said gearing, a ring gear in engagement with said driven gear and rotatable on said body, a lower ring rotatable on said body, and a lock ring threadedly engaging said lower ring for releasably locking said ring gear thereto whereby said carrier may be reciprocated as the ring gear is locked to the lower ring and rotating said ring relative to said body, a ratchet integral with said gearing, pawl mechanism for actuating said ratchet and gearing reciprocable in said body, and actuating means for said pawl mechanism operable as said body is being rotated and lower ring is held for relative rotation of said body and lower ring and said ring gear is released by said lock ring whereby said carrier is reciprocated in said body in step-by-step manner, said pawl mechanism including an elongated member having opposed pawls swingable therein for engaging said ratchet and a control ring oscillatable around said ratchet adapted to permit one only of said pawls to engage said ratchet, and a member in said body for oscillating said ring, said actuating means including an eccentric portion provided on said lower ring and a ring relatively rotatable thereon with operative connections between said last-named ring and elongated member.

IVER C. ROSS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,962,951 Conwell June 12, 1934 2,093,743 Steiner Sept. 21, 1937

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