US1608404A

US1608404A - Machine tool

Info

Publication number: US1608404A
Application number: US650397A
Authority: US
Inventors: Little Harry
Original assignee: Niles Bement Pond Co
Current assignee: Niles Bement Pond Co
Priority date: 1923-07-09
Filing date: 1923-07-09
Publication date: 1926-11-23
Anticipated expiration: 1943-11-23

Description

Nov. 23 1926. 1,608,404

H. LITTLE MACHINE ITOOLV 7 Filed July 19. 1923' s Sheets-Sheet 1 nnnnnnnnnnnnnnnn l IN VEN TOR.

A Tmmvm Nov. 1926.

H. LITTLE MACHINE TOOL Filed July 9. 1923 3 Sheets-Sheet -5 IN V ENT QR.

ATTORNEY.

Patented Nov. 23, 1926. 7

UNITED STATES PATENT OFFEQE.

HARRY LITTLE, OF PLAINFIELD, NEW JERSEY, ASSIGNO'B, TO NlLES-BEMENT-IOND COMPANY, OF NEW YORIQN. Y., A CORPORATION OE NEVT JERSEY.

MACHINE TOOL.

Application filed July 9,

This invention relates to tool operating mechanism for planers and like machines. Such machines ordinarily comprise a work table and one or a pair of uprights adjacent the table. A cross rail is mounted on the uprights and tool heads may be supported on the cross rail and on the uprights beneath the rail. The first said heads are ordinarily termed the rail heads and the second said heads are ordinarily termed the side heads. Specifically, my invention relates to mechanism for elevating and clamping the rail to the .said upright or uprights and for feeding and traversing the tool heads. The primary object of the invention is to provide an improved mechanism for performing these functions.

More specifically, the invention provides an electric motor, preferably on the cross rail, and mechanism operated thereby for intermittently feeding the tool supports for continuously traversing the tool supports in either direction, and for moving the cross rail on the uprights. Mechanism, including a manually operable clamping shaft extending along the rail, is provided for clamping the rail to the uprights. Connections are also provided between the clamping shaft and the motor operated mechanism whereby the motor will be operatively connected to the tool supports when the rail is clamped and will be disconnected therefrom and operatively connected to the rail elevating mechanism when the rail is unclamped. One object of the invention is to provide a tool operating mechanism embodying these improved features.

The motor is adapted to feed and traverse the tool supports on both the cross rail and uprights of the machine and mechanism is provided on the cross rail in connection with the motor for so traversing all such tool supports and for feeding the same the desired amount. This mechanism,

as illustrated in the drawings, comprises a shaft on the rail for operating each tool support. for either continuouslyoperating such shafts to traverse the tool supports or intermittently operating the shafts to feed the tool supports. All the tool supports are therefore operated and controlled from a single mechanism at the front side of the machine within easy reach at the eperator. It is an The connections to the motor provide 1923. Serial no, 650,397.

object of the invention to provide an improved tool operating mechanism of this type.

As illustrated in the drawings, a. clutch is provided for connecting one of the tool support operating shafts on the rail with the rail moving means. Other means is pro vided for driving this shaft for traversing the rail independently of the drive for feeding and traversing the tool supports. Another object of the invention is to provide a novel arrangement of elements for performing these operations with convenience.

A further object of the invention is to provide mechanism in connection with the rail clamping means for feeding and traversing the tool supports from the motor when the rail is clamped and for independently operating the said one shaft therefrom for moving the rail on the uprights when the rail is unclamped, the said mechanism including means for automatically disconnecting the said one shaft from the feeding means when unclamping the rail.

With the above and other objects in view, my invention consists in the features of construction and operation set forth in the following specifications and illustrated in the accompanying drawings. In such drawings annexed hereto and forming a part of this specification, I have shown certain embodiments of my invention in a planer but it will be understood that the invention can be otherwise embodied and that the drawings are not to be construed as defining or limiting the scope of the invention, theiclaims appended to this specification being relied upon for that purpose.

Referring to the figures of the drawings:

Figure 1 is a side elevation of a planer embodying my invention.

Fig. 2 is a front elevation thereof.

Fig. 3 is an enlarged front end elevation of the cross rail.

Fig. 4 is a fragmentaryplan View thereof partially in section.

Fig. 5 is a fragmentary planview of a de-' tail shown in side elevation in Fig. 3.

Fig. 6 is an enlarged fragmentary plan view of a detail.

Fig 7. is a plan view of the cross rail shown in Fig. 2 I I Y Fig. 8 is a front elevation thereof.

view

line 99 of Fig. 10 and showing the mechanism in the cross rail clamping position.

Fig. 10 is a plan view thereof.

Fig. 11 is a view taken on line 1111 of Fig. 12 and showing the mechanism in the cross rail unclainped position.

Fig. 12 is a plan View thereof.

Fig. 13 is a fragmentary detail view taken approximately on line 13-13 of Fig. 1.

Fig. 1.4; is an elevation of the rear end of the cross rail. V

In the drawings lindicates the bed of a planer having a work table 2 slidably mounted thereon and a pair of uprights 3 respec- 'tively at opposite sides of the table. A cross rail 1 is mounted to slide vertically on the uprights and is adapted to slidably support a pair of tool head saddles 5 and 6 thereon. Side head saddles 7 an=1t8 are respectively supported on the uprights beneath the cross rail. The table 2 is adapted to be reciprocated from a motor 9 and such reciprocation is automatically controlled by a pilotswitch 10 operated by table dogs 11 operating on switch arms 12. This mechanism and its op eration are more fully described in Patent No. 1.299.192. The movement of the table may be controlled by means of apendent switch 13 which is described in detail in Reissue Patent No. 14,540; dated October 22 1918.

An electric motor 14 is mounted on a rearwardly extending bracket 1 1 on the cross rail and. as illustrated in the drawings, this motor is adapted to feed and traverse the tool supports and to move the cross rail on the uprights. vManually operated means is provider for clamping the cross rail to the uprights. This means and the mechanism cooperating with the motor for performing the said functions will now be described.

A plurality of

parallel shafts

15, 16, 1?. 1.8 and 19 are rotatal'ny mounted on the cross rail. The

screw shafts

16 and 18 are threadedly connected to the tool saddles 5 and (3 and the shaft 17 is adapted to be connected to either tool slide in the saddles in the usual manner. The

screw shafts

16 and 18 are therefore respectively adapted to operate the rail saddles or heads 5 and 6 and the shaft 17 is adapted to move the tool slides vertically in the saddles.

The shaft is adapted to operate the front de head 7 as follows. A bevel gear 0 on the shaft 15 is connected by means of bevel scars on a shaft 21 to a bevel gear 22 splined to the vertical front side head shaft i s shown in Fiq". 2, the saddle 7 sup- {sorted by anut 24 threaded to a vertical vie screw This nut may be rotated in either direction from the shaft 23 by means of connections therebetween including bevel gears 26 loose on the shaft. Either bevel gear 26 may be connected to the shaft by means of a clutch 27 splinedto the shaft and controlled by handle 28. The purpose of this reversing connection isto permit'the feeding of the saddle 7 in either direction upon either stroke of the table 2 as will be understood.

The shaft 19 is adapted to operate the backside head 8 as follows. A bevel gear 29 keyed to the rear end of the shaft 1.9 is in mesh with. a bevel gear 30 keyed to the forward end of a short shaft 31 journaled in a bracket on the rail. A spiral gear 33 loose on the shaft 31 is in mesh with a spiral gear 3% .splined for axial movement on the back sidehead vertical feed shaf" 35. clutch splined to the shaft 31 rearwardly'of the spiral gear 33 and a-spring 37 normally engages the clutch with such gear. the adjacent faces of the clutch and gear being provided with cooperating clutch teeth. A. bevel gear 38 splined to the vertical shaft is directly connected .to a nut on the screw 25 which supports the side head 8 as illustrated in Fig. 2. It will of course be understood that this connection can be of the reversing type used to operate the front side head 7 if desired.

The means for operating the shafts 15--l9 from the motor for feeding; and traversing the tool supports will nowbe described. A pinion 40 is loosely mounted on the forward end of each of shafts 15-19 and a ratchet pinion 11 is non rotatably and slidably mounted thereon adjacent each pinion $0. The pinions 10 and 4.1 are provided with cooperating clutch teeth on their adjacent faces whereby the inner non-rotatable por-- tion of the pinion ll may be enggra ed with the pinion 10. Operating handles 42 are provided for shifting the pinions 11. Two large rears as and 44 on a shaft 15 parallel with the shafts 15-19 are respectively adapted to operate the pinions 10 and 411. The gear 4-8 in mesh withthe pinions -11), and the pinionsll. are adapted to be slid into meshing engagement with theg ear 414.. The near 4.3 adapted. to be con .nuously rotated in either direction for traversing the tool, supports and the gear let adapted to be intermittently rotated for. feedingthe tool supports, all of which mechanism is hereinafter more specifically described.

Loosely :mounted on the motorshaft 16 is a worm 17 in mesh with a worm wheel 4:8 keyed to the shaft- 45. A clutch d9 splined to theshaft 46 may be shifted into engagement with the worm 4?. This clutch is adapted to be shifted by an arm 50 on the rail clamping; shaft 51 hereinafter described. V

The gear 4-.3 is keyed .to the shaft and such gear therefore directly connected with the motor when the clutch 4129 is engaged with theworin 17. The gear 41% isloose on the sh t 45, asyis also. an adjacent driving ineinoer 52 therefor. The hub of the member 52 is provided with clutch teeth adapted to be engaged by a clutch 53 splined to the hub of the gear 43. A spring 54 normally operates to engage the clutch with the member The adjacent faces of the gear AA and member 52 are formed with cooperating arc-uate recesses for receiving compression springs 55. As thus constructed, the drive from the member 52 to the gear A l is entirely through these springs. The arrangement is such that the s rings yield suliiciently to permit slight shock absorbing rotation of the elen'ient 52 relative to the gear 4.4L- in both directions. This mechanism is fully illustrated and described in the said copending r pplication.

A bushing 56 loosely mounted on the outer end of the shaftl5 has a worm wheel 57 keyed to its inner end and a dial 58 pinned to its outer end. The inner face of the worm wheel carries a stop 59 cooperating with a tired stop 60. The gear 4% carries a stop 61 operating between the

steps

59 and 60, the two latter stops being adapted to positively limit the rotation of the gear it in the opposite directions respectively. A shaft 62 has a worm 63 thereon in mesh with the worm wheel 57. The shaft and worm may be rotated by a handle 64 to adjust the stop 59 relative to the stop 60, the dial 58 being adapted to indicate the amount of such adjustment. v

In Fi 4 the feeding and traversms 31n o a t O ions L0 and ll on the shaft 17 are shown in section and the feeding pinion 4:1 is shown in the neutral position. When it is desired to traverse one or more of the tool supports. the proper pinion or pinions 41 are shifted into clutching engagement with the adjacent pinions A0. A direct connection is thereby established from the motor to the tool support operating shafts 15l9.

li hen it is desired to feed one or more of the tool supports, the proper pinion or pinions l1 are slid into meshing engagement with the feed gear A4. The spring 5% closes the clutch 53. The pilot switch 10 which operates the motor 9 to automatically reciprocate the table 2 also controls the motor 1 f as specifically defined in the before mentioned patent and copending application. Thus, as the table is reciprocated, the motor i l rotates synchronously therewith first in one direction and then in the opposite direction. The opposite rotations of the gear at are limited by the stops 59 and which stop the iotation of both the gear and motor. The travel of the gear is stopped positively while the springs 55 permit a slight overtravel of the motor and member 52, thus re lieving the motor and its mechanism of. the shock incident to the stops while at the same time securing a definite and accurate feeding movement of the gear l It will be understood that the pinions ll are each provided With the usual ratchets therein for imparting rotary movement to their shafts or screws in one or the other direction as desired.

As thus far described, it will be noted that all the tool supports may be selectively fed and traversed from the motor 1A. The feeding movement of the motor and its cooperating mechanism is limited by the stops 59 and. 60. Such stops positively and accurately limit the travel of the feed gear 44, while the motor and shaft 45 are permitted a slight shock-absorbing over-travel. The. rotary feeding movements imparted to the shafts 15-19 and to the tool supports are therefore very definite and accurate.

The feed clutch 53 normally closed by the spring 5%. Means now to be described is provided for automatically opening this clutch when traversing (through the gear 43). such operation being necessary to pre vent driving the feed gear A l. A yoke 65 mounted on a vertical pivot 66 has a rearwardly extending arm 6? engaging within the clutch groove in the clutch The portion of the yoke forwardly of the pivot 66 extends vertically along the rail clutch shifters 452. Each clutch shifter 42 is oblong in shape and comprises a clutch shifting portion extending above its center of rotation and another portion extending below such center. The yoke has a projection 68 extending inwardly to the lower portion of each shifter (Fig.13). When the 'p'inions 41 are in the neutral position, illustrated in Fig. 4, or in mesh with the gear 44-, the clutc .53 is. engaged for feeding. Any movement of the handles 42 to engage the pinions 4:1 with the pinions 40, for traversing the tool supports, automatically moves the forward portion of the yoke outwardly and disengages the clutch 53. Thus the connection to the feed gear ts is automatically disengaged whenever any tool support is being traversed. v

The cross rail A is supported on the uprights by means of a pair of nuts 69 journaled in the rail and. r spectively threadedly engaging the pair of screws 25 nonrotatably mounted in the uprights. The nuts are provided with worm wheels there-- on engaged by worms 70 on a shaft 71 extending along the rail parallel with the shafts l5 l9. The rail elevating shaft 71 is driven from the shaft 19 through a pair of spur gears 72 and 73, the gear 72 being keyed to the shaft 19 and the gear 73 be ing loose on the shaft T1. A clutch 74 is adapted to operatively connect the gear 73 to its shaft, a spring "4'5 between a collar 76 and the said clutch normally moving the clutch into engagement.

A manually operable rail clamping shaft 51 is mounted in the rail parallel with the

shafts

19 and 71. This shaft carries an eccentric 77 adapted to operate on a block 78 on the inner ends of a pair of clamping levers 79. The levers are loosely bolted to the rail at 80 and the short arms thereof engage the uprights, An operating handle 81 is provided on the forward end of the clamping shaft 51. The clamping shaft is also provided with a steep pitched thread 82 thereon in engagement with a yoke collar 83 connected to the clutch 7 4. Rotation of the shaft 51 to clamp the cross rail to the uprights operates to withdraw the clutch to the disengaged position shownin F ig. 8. Rotation of the shaft in the direction to unclamp the rail (see arrow Fig. 3) permits the spring 75 to engage the clutch. In Figs. 1 and 3 to 10 inclusive, the mechanism is shown in the rail clamping position.

The power required to feed and traverse the tool supports is such that these opera tions may be performed from the large gears 4-3 and 44 to the

pinions

40 and 41 without difliculty. However, greater power is required to elevate the cross rail and, to drive the

shafts

19 and 71 for such purpose through the large gear 43 and pinion 40 would be impracticable. A separate driving connection from the motor to the shaft 19 is therefore provided for this purpose as follows.

A spiral gear '84 is keyed to the shaft 19 and is engaged by a spiral gear 85 loose on the motor shaft 46. The clutch 49 is provided with clutch teeth on its forward end adapted to engage with clutch teeth 011 the gear 85. As before stated, the clutch 49 is shifted by an arm 50 on the rail clamping shaft 51. In Fig. 4, the clamping shaft is in the rail clamping position and the clutch is engaged with the worm 47. Rotation of the clamping shaft in the rail unelamping direction will operate to shift the clutch from the worm 47 into engagement with the gear 85.

To provide for properly clamping the rail and shifting the clutch .49, the arm 50 is preferably loosely mounted on the clamping shaft between a pair of collars 86 and 87 pinned to the shaftas illustrated in Fig. 6. llhe hub of the arm is provided with a recess within which extends a projection of the collar 86, the projection being shorter circumferentially than the recess. A pair of lungers 88 and 89 are slidably mounted in the projection and normally forced outwardly by means of a spring 90. The construction is such that upon rotation of the clamping shaft a plunger will abut against its wall of the recess and resiliently engage the clutch. It will be understood that this loose connection also permits rotation of the clamping shaft to its full clamping position. It will furthern'iore be noted that when rotating the shaft in either direction,

the mechanism )OSl'tiVQlV disen a e. the

clutch from one element and resiliently engages the same with the other element.

As illustrated in Figs. 7 and 14, the rear end of the clamping shaft 51 carries an arm 91 which is connected by a link 92 to a pivoted arm 93 connected to the clutch 36. In 7 and 14, the shaft 51 is shown in the rail clamping position and the clutch is closedhen the shaft is rotated to unclanip the rail (in the direction of the arrow, Fig. 14), the connection including the link 92 will disengage the clutch. It will therefore be understood that rotation of the clamping shaft to unelamp the rail moves the clutch 49 from the worm 47 into engagement with the spiral gear 85, disengages the clutch 3G, and permits the engagement of the clutch 74. Conversely, rotation of the clamping shaft to clamp the rail moves the clutch 49 from the spiral gear 85 into engagement with the worm 47, permits the engagement of the clutch 36, and disengages the clutch 74.

It has been explained that rotation of any handle 42 in a direction to engage a pinion 41 with a pinion 40, acts through the yoke against the spring 54 to disengage the clutch 53. When the handle 42 is released, the spring 54 acts through the yoke and clutch shifters 42" to automatically move the clutch pinion 41 back to its neutral position, However, when the pinion 4-1 is shifted in the opposite dir ction into mesh with the gear 44-, the same remains in such position until positively moved therefrom. When operating the rail traversing shaft 71 from the shaft 19, it is essential that the pinion 41 on the shaft 19 be in the neutral position. Should the pinion 41 be in mesh with the gear 4-4'when the rail is being unclamped, the clamping shaft will operate through the following mechanism to auto matically move such gear to the neutral .position.

An arm 94 extends downwardly from the Clflnlplng handle 81 and a horizontal bar 95 secured to the free end of the arm extends to a position between the

gears

43 and 44. A "lat forwardly extending spring strip 96 is secured to the free end of the bar. This strip is curved to the shape shown in Fig. 10.

\Vhcn the elements are in the rail clamping position (shown in Figs. 9 and 10), the free end of the strip 96 is opposite the groove 41 in the pinion 4-1 (the pinion being in the feeding position). The strip is also in a' position, as shown in Fig. 9, permitting free shiftin movement of the pinion. When the clampii shaft is moved to the rail unclamping position (shown n1 Figs. 11 and 12), the

strip enters the groove 41 and shifts the pinion to the neutral position (Fig.112). It will furthermore be noted by reference to 9 and 11 that the strip 96 mounted in an angular or transversely twisted position in the bar 95. In this manner, one or go a of the strip operates to shift the clutch to the neutral position when unclamping the rail and the other et ge b rides out of the groove and leaves the pinion in the neutral position when clamping the rail. It will be understood that the flexibility of the strip per iits its riding over the pinion el should the latter be inthe neutral position when the rail is clamped instead of in the position shown in Fig. 10.

A controller 97 having an operating handle 98 is provided for operating the motor continuously in one direction or the other for traversing the tool supports or cross rail.

Briefly, the operation of my improved mechanism is as follows: The cross rail 4 being clamped, as SllOVv'Il in the drawings, the clutch a9 is engaged with the worm l7 to operate the traversing and feeding gears 43 and slat, he back side head clutch 36 is enged, and the rail traversing clutch T l is disengaged. To rotate any shaft -19 continuously for traversing its tool support, the ope *ator shifts the pinion 41 on such shaft into clutching engagement with the pinion 40. Such operation automatically diseng'i 'e he teed clutch 52 through the yoke 65. T :9 motor 1% may now be continuously operated in either direction by the controller handle 98. To feed any tool support or supports, the proper pinions M are shifted into l the feed gear The stop 59 mesh with having been adjusted to the desired pos tion, the gear will be automatically oscillated as the work table 2 reciproca-tes and the tool supports will be led the desired amount therefrom in the usual manner. The direction of feed each tool support is controlled by the usual double pawl ratchetniechanism within each ratchet pinion M. The extentof feed of the tools is controlled by the handle (3 L which adjusts the movable stop 59.

hen it is desired to move the cross rail on the uprights. the operator moves the c sniping handle 81 in the unclamping clirec tion (arrow, Fig. This rotation oi the clamp'ano: shaft unclamps the rail, moves the clutch 479 from the worm 4E7 into engagement with the spiral gear 85, disengages-the clutch permits the engagement of the clutch 74, and shifts the pinion ll to its neutral position (should this pinion not already be in such position). lhe motor is thereby autollv connected directly to the rail eleshaft 19 and the rail may be elevated or lowered by operating the controller handle 98, The rail being adjusted to the desired position, the operator moves the clamping handle 81 in the clamping direction which operation automatically clamps the rail, moves the clutch ll) from the spiral gear 8;)

shaft 71, through the back side head.

into engagement with the Worm 47, permits the engagement of the clutch 36, and disengages the clutch 74E. The mechanism is therefore automatically placed in the tool operating position.

What I claim is:

i. In a planer or the like, the combination of an upright, a cross rail thereon, tool supports on the upright and cross rail, an electric motor, a screw on the cross rail threadedly connected to the tool support thereon, a shaft on the rail parallel with the screw and operatively connected to the tool support on the upright, and means for opera tively connecting the motor to the screw and shaft, the said means and motor being operative torotate the shaft and screw continu ously tor traversing the tool supports or to intermittently rotate the shaft and screw optionally in one direction or the other a r predetermined amount for feeding the tool supports and the said means being adjustable to vary such amount. I

2. In a planer'or the like, the combination of an upright, a cross rail thereon, tool supports on the upright and cross rail, screw threaded means engaging each support, power means, and operative connections trom the power means to the screw threaded means for feeding and traversing the supports, the said connectionsincluding mechanism on the rail for intermittently rotating the said screw threaded means predetermined amount optionally in one direction or the other and the said means being adjustable to vary such amount.

3. In a planer or the like, the combination of an upright, a cross rail thereon, tool supports on the upright and cross rail, screw threaded means engaging each support, an electric motor on the rail, and operative connections from the motor to the screw threaded means for feeding and traversing the tool sup orts, the said connections including mec anism on the rail for intermittently rotating the said screw threaded means a predetermined amount optionally in one direction or the other and the said means being adjustable to vary such amount.

4. In a planer or the like, the combination of an upright, a cross rail thereon, tool supports on the upright and cross rail, an electric motor, a screw on the cross rail thread- BCll connected to the tool support thereon, a shalt on the rail parallel with the screw and operatively connected to the tool support on the upright, a ratchet pinion on the screw, a ratchet pinion on the shaft, and power opera-ted means on the rail operatively connected to the ratchet pinions for intermittently rotating the shalt and screw a variable predetermined amount in one direction or the other as desired.

5. In a planer or the like, the combination of an upright, a cross rail thereon, tool supill) ports on the upright and cross rail, an electric motor, a screw on the cross rail threadedly connected to the tool support thereon, a shaft on the rail parallel with the screw and operatively' connected to the tool support on the upright, a pinion loose on the screw and aratchet pinion adjacent thereto, a pinion loose on the shaft and a ratchet pinion adjacent thereto, and power operated means on the rail operatively connected to the pinions,the construction being such that by operating through the said loose pinions the tool supports can be continuously traversed and; by operating through the ratchet pinions the tool supports can be fed intermittently in one direction or the other through a desired distance.

6. In a planer or the like, the combination of an upright, a cross rail thereon, tool supports on the upright and cross rail, an electric motor, a screw on the cross rail threadedly connected to the tool support thereon, a shafton the rail parallel with the screw and operatively connected to the tool sup port on the upright, a pinion on the screw and a ratchet pinion adjacent thereto, a pinion on the shaft and a ratchet pinion adj cent thereto, a gear operati-vely connected with the ratchet pinions, a gear operatively connected with the other said pinions, and operative connections from the motor to the gears for optionally rotating the first gear intermittently in opposite directions a variable predetermined amount for feeding the tool supports or for rotating the second gear continuously in either direction for traversing the tool supports.

7. In a planer'or the like, the combination of a pair of uprights, a cross rail thereon, tool supports on the uprights, and cross rail, an electric motor, a screw on the cross rail threadedly connected to the tool support thereon, shafting on the rail'parallel with the screw and o'peratively connected to the tool supports on the uprights, and opera tive connections including ratchet pinions from the motor to the shaftingand screw, the said connections being such that the tool supports may be continuously traversed and intermittently fed a variable predetermined amount from the motor.

8. In a planer or the like, the combination of a pair of uprights, a cross rail thereon, tool supports on the uprights and cross rail, an electric motor, a screw on the cross rail threadedly connected to the tool support thereon, a shaft on the rail parallel with the screw and operatively connected to one up right .tool support, a second parallel shaft on the rail operatively connected to the other upright tool support, and operative con; nectionsincluding ratchet pinions'from the motor to the shafts and screw, the said connections being such that-the tool supports may be continuously traversed and intermittently fed a variable predetermined amount from the motor.

9. In a planer or the like, the combination of a pair of uprights, a cross rail thereon, a tool support on the rear upright beneath the rail, a shaft on the rail, operatively connected to the tool support, power means, and means providing an operative connection from the power means to the said shaft for feeding the tool support, the second mentioned means including mechanism on the. front end of the rail for controlling the feeding movements, of the tool support.

10. In a planer or the like, the combination of a pair of uprights, a cross rail thereon, a tool support on the rear upright beneath the rail, a; shaft on the rail operatively connected to the tool support, an electric motor, and means providing operative connections. from the motor to the said shaft for feeding and traversing the tool support, the said means including mechanism on the front end? of the rail for controlling the feeding and traversing of the tool support.

11. In a planer or the like, the combination of a pair of uprights, a cross rail thereon, a tool support on the rear upright beneath the rail, a shaft on the rail operatively connected to the tool support, power means, and-means providing an operative connection from the power means to the said shaft for feeding the tool support, the second mentioned. means including mechanism on the front end of the rail for conrolling the direction and extent of feeding movements of the tool support.

12. A tool operating mechanism for planers or the like. comprising in combination an upright, a cross rail thereon, screw threaded means, for moving the rail on the upright, means for clamping the rail to the upright, a tool support, a shaft on the rail operatively connected to the tool support, means for connecting the shaft to the said screw threaded means, an electric motor, means for operatively connecting the shaft to the motor for feeding and traversing the support, other means for operatively connecting the motor to the shaft, and means for. rendering either of the last two mentioned means operative and the other inoperative.

13. A tool operating mechanism for planers or thelike comprising in combination an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a tool support, a shaft on the rail operatively connected to the tool support, means for connecting the shaft to the rail moving means, power means, means for operatively con meeting the shaft to the power means for feeding and traversing the support, other means for operatively connecting the powermeans to the shaft, and means automatically operative to disconnect the fifth mentioned means and connect means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the sixth mentioned means for clamping the rail.

A A tool operating mechanism for planers or the like comprising in combination an upright, a cross rail thereon, screw threaded means for moving the rail on the upright, means for clamping the rail to the upright, a tool support, a shaft on the rail ogeratively connected to the tool support, means for connecting the shaft to the said screw threaded means, an electric motor on the rail, means for operatively connecting the shaft to the motor for feedin 'v and traversing;- the support, other means for operatively connecting the motor-to the shaft, and means automatically operative to disconnect the fifth mentioned means and connect the sixth mentioned means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the sixth mentioned means when clamping the rail.

15. A tool operating mechanism for planers or the like comprising in combination, an upright, a cross rail thereon, screw threaded means for moving; the rail on the upright, means including a. manually operable clamping shaft for clamping the rail to the upright, a. plurality of tool supports, a plurality of shafts on the rail each operatively connected to a tool support, means for connecting one of the shafts to the said screw threaded means, an electric motor, means including; clutch means for connecting; the shafts to the motor for feeding and traversing the supports, other neans including clutch means for operatively connecting the motor to the said one shaft, and means operated by the clamping shaft for shifting: the clutch means to connect the motor with the means for operating; the shafts for feeding and traversing when clamping the rail and for shifting the clutch means to connect the motor with the said one shaft when unelamping the rail.

16. A tool operating mechanism for planers or the like comprising in combination, an upright, a cross rail thereon, means for moving the rail on the upright, means for clan'iping the rail to the upright, a plurality of tool supports, a plurality of shafts on the rail each operatively connected to a tool support, means for connecting one of the shafts to the rail moving; means, power means, mechanism intermediate the shafts and power means for feeding; and traversing; the supports, a driving element on the said one shaft, and means operated by the clamping means for automatically connecting the power means to the said the sixth mentioned mechanism when clamping he rail and for disconnecting the same and connecting the power means to the said driving element when unclamping the rail.

17. A tool operating mechanism for planers or the like comprising in combina tion, an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a plurality of tool supports, a plurality of shafts on the rail each operatively connected to a tool support, means for connecting; one of the shafts to the rail moving means,

power means, mechanism intermediate the shafts and power means for feeding and traversing the supports, a. driving element on the said one shaft, clutch for optionally connecting the power means either to the said mechanism or to the said driving element, and means operated by the clamping means for shifting the clutch to connect the power means to the said mechanism when clamping the rail and for connecting; the power means with the said driving element when unclamping the rail.

18. A tool operating mechanism for planers or the like comprising in combination, an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a plurality of tool supports, a plurality of shafts on the rail each operatively connected to a tool. support, means including a clutch for connecting one of the shafts to the rail moving means, power means, mechanism intermediate the shafts and power means for feeding and traversin the supports, a' driving element on the said one shaft, and means operated by the clamping means for connecting the power means to the said driving element and for closing; the said clutch when unclamping the rail and for disconnecting both such connections ,and connecting the power means with the said mechanism when camping the rail 19. A tool operating mechanism for planers or the like comprising in combination, an upright, a cross rail thereon, means for moving the rail on the upright, a tool support, a shaft on the rail operatively connected to the support, means for connecting the shaft to the rail moving means, a motor on the rail, mechanism intermediate the motor shaft and rail shaft for operating the rail shaft to feed and traverse the sup port, a gear on the rail shaft, a clutch on the motor shaft for optionally connectinn, either the said {gear or mechanism to the motor shaft, and means for shifting the clutch.

20. A tool operating mechanism for planers or the like comprising in combination, an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a tool lUf) support, a shaft on the rail operatively connected to the support, means for connecting the shaft to the rail moving means, a motor on the rail, mechanism intermediate the motor shaft and rail shaft for operating the rail shaft to feed and traverse the support, a gear on the rail shaft, a clutch onthe motor shaft for optionally connecting either the said gear or mechanism to the motor shaft, and means operated by the clamping means for shiftingthe clutch to connect the motor to the said mechanism when clamping the rail and for connecting the motor to the said gear when unclamping the rail.

21. A tool operating mechanism for planers or the like comprising in combination, an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a tool sup, port, a shaft on the rail operatively connected to the support, means providing a disengageahle connection between the shaft and the rail moving means, a motor, mechanism intermediate the motor shaft and rail shaft for operating the rail shaft to feedand trav erse the support, a gear on the ra] sliaft, clutch means for optionally connecting either the said gear or mechanism to the motor, and means operated by the clamping means for shifting the said clutch means to connect the motor to the said mechanism when clamping the rail and for connecting the motor to the said gear when unclamping the rail.

22. A tool operating mechanism for plan are or the like comprising in combination, a pair of uprights, a cross rail thereon, screw threaded means for moving the rail on the upright, means for clamping the rails to the uprights, a plurality of tool supports, a plurality of shaftson the rail each operatively connected to a tool support, means for connecting one of the shafts to the said screw threaded means, power means, means on the rail for operatively connecting the shafts tothe power means for feeding and traversing the supports, other'n'ieans for operatively connecting the power means to the said one shaft, and means automatically operative to disconnect the fifth mentioned means and connect the sixth mentioned means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the sixth mentioned means when clamping the rail.

23. A tool operating mechanism for plan-- ers or the like comprising in combination, a pair of uprights, a cross rail" thereon, screw threaded means for moving the rail on the uprights, means for clamping the rail to the uprights, a plurality of tool supports, plurality of shafts on the rail each operatively connected to a tool support, one of the shafts being connected to a. tool support on one of the uprights, means for connecting the said one shaft to the screw threaded means, an electric motor, means for opera tively connecting the shafts to the motor for feeding and traversing the supports, a

clutchfor connecting the motor to the said one shaft, and means automaticallyoperative to disconnect the fifth mentioned means and engage the clutch when unclampingthe rail and for connecting thefifth mentioned means and disengaging the clutch when clamping the rail.

2 1. In a planer or the like, the comhination of an upright, a cross rail thereon,

means for moving the rail on the upright,

the said one shaft from the feed gear when clamping the rail. 7

25. In a planer or thelike, the combination of an upright, a crossrail thereon, means for moving the rail on the upright, means for clamping the rail to the upright. a plurality of tool supports, a plurality of shafts on the rail for respectively operating the tool supports, disengageahle means for connecting oneof said shafts to the said screw threaded means, powermeans, disengageable means including clutch means on each of said shafts for operatively connecting the shafts to the power means for feeding and traversing-the supports, other disengageable means for operatively connecting the power means to the saidone shaft, and means automatically operative to shift the said clutch means on the said one shaft to a neutral position Whenunclamping the rail.

26. In aplaner or the like,the combination of anupright, a cross rail' thereon, means for moving therail on the uprigl'lt, means for clamping the rail to the upright, a tool support, a shaft'on the rail for operating the toolsupport, means for connecting the shaft to the rail moving means, power means, means including a feed gear for operatively connecting the shaft to the power means for feeding the support, other means including a'gear on the shaft for operatively connecting the power means to the shaft, means automatically operative to disconnect the fifth mentioned means and connect the sixth mentioned means when unclamping the rail and for connecting the fifth mentioned means, and disconnecting the sixth mentioned means when clamping the rail, and means automatically operative to disconnect the said one shaft from the feed gear when unclamping the rail.

27. In a planer or the like, the combination of an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a plurality of tool supports, a plurality of shafts on the rail for respectively operating the tool supports, means for connecting one of said shafts to the rail moving means, power means, means including clutch means on each of said shafts for operatively connecting the shafts to the power means for feeding and traversing .the supports, other means for operatively connecting the power means to the said one shaft, means automatically operative to disconnect the fifth mentioned means and connect the sixth 1nentioned means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the sivth mentioned means when clamping the rail, and means automatically operative to shift the said clutch means on the said one shaft to a neutral position when unclamping the rail.

28. In a planer or the like, the combination of an upright, a cross rail thereon, means for moving the rail on the upright, means for clamping the rail to the upright, a plurality of tool supports, a plurality of shafts on the rail for respectively operating the tool supports, means for connecting one of said shafts to the rail moving means, power means, means including a ratchet pinion on each shaft for operatively connecting the shafts to the power means for feeding the supports, other means for operatively connecting the power means to the said one shaft, means automatically operative to disconnect the fifth mentioned means and connect the sixth mentioned means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the sixth mentioned means when clamping the rail, and means automatically operative to shift the ratchet pinion on the said one shaft to a neutral position when unclamping the rail.

29. In a planer or the like, the combination of an upright, a cross rail thereon, screw threaded means for moving the rail on the upright, means including a clamping shaft for clamping the rail on the upright, a plurality of tool supports, a plurality of shafts on the rail for respectively operating the tool supports, means for connecting one of said shafts to the said screw threaded means, power means, means including a ratchet pinion and an adjacent pinion on each shaft for operatively connecting the shafts to the power means for feeding and traversing the supports, other means for operatively con necting the power means to the said one shaft, means automatically operative to disconnect the fifth mentioned means and connect the sixth mentioned means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the sixth mentioned means when clamping the rail, and means automatically operative to shift the ratchet pinion on the said one shaft to a neutral position when unclamping the rail. y

30. In a planer or the like, the combination of an upright, a cross rail thereon, screw threaded means for moving the rail on the upright, means for clamping the rail to the upright, a plurality of tool supports, a plurality of shafts on the rail for respectively operating the tool supports, means for connecting one of said shafts to the said screw threaded means, power means, means including clutch means on ach of said shafts for operatively connecting the shafts to the power means for feeding and traversing the supports, other means for operatively connecting the power means to the said one shaft, means automatically operative to disconnect the fifth mentioned means and connect the said other connecting means when unclamping the rail and for connecting the fifth mentioned means and disconnecting the said other connecting means when clamping the rail, means automatically operative to shift the said clutch means on-the said one shaft to a neutral position when unclamping the rail, and means for respectively connecting and disconnecting the third mentioned means when unclarnping and clamping the rail.

In testimony whereof, 1 hereto affix my signature.

' HARRY LITTLE.