US1423266A

US1423266A - Shaping machine

Info

Publication number: US1423266A
Application number: US298924A
Authority: US
Inventors: Willard T Sears
Original assignee: NILES BEMENTPOND CO
Current assignee: NILES BEMENTPOND CO; NILES-BEMENTPOND Co
Priority date: 1919-05-22
Filing date: 1919-05-22
Publication date: 1922-07-18
Anticipated expiration: 1939-07-18

Description

W. T. SEARS.

SHAPING MACHINE.

APPLICATION FILED MAY 22. ms.

1,423,266. Patented July 18, 1922.

2 SHEETS-SHEET 1.

l 1 I F lNVENTOR WJZMK T Sam BY Air/o RNEY W. T. SEARS.

SHAPING MACHINE.

APPLICATION FILED MAY 22, 1919.

1,423,266. Patented y 18, 1922.

2 SHEETSSHEET 2.

INVENTOR WJZa/Ld Sm RNEY BY Mk 75% XUILLARD T. SEARS, OF lVlIONTCLAIR, NEW JERSEY, ASSIGNOR T0 NILES-BEMENT- PQNLD GOMIPANY, 0F NEVV YORK, N. Y., A CURPGR-ATION OF NEW JERSEY.

SHAPING MACHINE.

lessees.

Application filed May 22,

7 0 all/whom 0'7. alarm m i. Be it known that I, ma ine T. Snans, a citizen of the United States, residing; at Montclair. in the county o'lf' EsseX and State oi New Jersey, have invented certain new and useful Improvements in Shaping Machines, of which the following is' a specifica cation. I

Que of the objects ol this invention is to provide a shaping; machine which is capable oi' cuttingin any one of tour direct1ons, as mav be desired. Another object of the inveiition is to provide an improved electric drive mechanism for shaping or similar machines. Still another object of the invention is to provide an improved feed mechanism for shaping machines including an indeuandeut electrh: motor. Still further obof the invention will be apparent from the following specification and claims.

In the accompanying drawings i have shown one emlmdiment of the inv'ention, the drawings being to some extent diagranr matic, It will be understood that the drawine's are for illustrative purposes only and are not to be construed as defining or limiting the scope of t e invention, theaccompan yii'ig claims being relied upon lot that purpose.

Qt the drawings Fig. 'l is a vertical transverse sectional view talceu along the lines 1l1 of Figs. 2 and 3.

Fig". .2 is a front view.

a plan view.

Fig". 4- is a diagium of electrical connections.

il t 'lerring to the drawings, 1 represents the main trame or bed which carries the otl or parts. Carried by the bed 1 is a work table 2. this table, as shown, being; mounted on Ellldllbeifl'lttllatfl saddle plate 3. The work table is-vertically adjustal'ile on the addle plate and can be locked in position in; means ot bolts entering T-slots at, t. The I die plate is prel m'ably longitudinally ad :ttble along the bed, being held by bolts buterinp lot itudinal T-

slots

5, 5. For movin the saddle plate there is pret'erably a pinion 6 engaging a longitudinal rack 7 on the bed.

Specification of Letters Patent.

Patented July 18, 1922.

1919. Serial No. 298,924.

There is provided a tool holder 8 which is adapted to be held and reciprocated by suit-' able devices carried by the bed 1. As illustrated, there is a saddle 9 which is longitudinally reciproeable along ways formed on the top of the bed. The saddle 9 is provided with trimsverse ways which support a transversely reciprocable head 10, this head carryin; the aforesaid tool holder 8. The tool holder 8 is adjustable or movable with respect to the head 10 so as to be capable of occupying any one of four operative posi tions at right angles to each other. The tool holder comprises a clapper plate 11 which isliorizontally pivoted to the body of the tool holder and which 'arries the cutting tool. As illustrated, the body oil the tool holder is cylindrical and tits :1 vertical cylindrical bearin 12 in the reciprocating head. For turning the tool holder there is provided aworm 13 engaging a worm wheel 14 secured to the holder. With the tool holder adjustable. as shown, it will be seen that the tool can cut on either the outward stroke the inward stroke when the head 10 is reciprocated, and can cut on either the righthand stroke or the left-hand stroke when the saddle 9 is reciprocated.

I provide mechanism for either the saddle or the head and. as preferred. this mechanism is constructed as follows: Rotatablv mounted in suitable bear ings in the bed is a longitudinal screw 15. Fitting this screw is a nut 16 secured to the saddle. screw is turned the saddle is mow d longitudinally along the bed. Also rotatably mounted in bearings in the bed is a, longitudinal shaft 17 to which is splined a pinion 18. This pinion meshes with a rack 19 on the under side of the head 10. The pinion 18 is mounted to move longitudinally with the saddle. thus remaining at all times in engagement with the 1acle19. It will be seen that when the shaft 17 is turned the head 10 is moved transversely.

F or supplying power to rotate the screw to or the shaft 17, there is preferably provided an electric motor 20. This motor is connected through suitable speed-reducing gearing 2i with a short drive shaft 22 reciprocating It will be seen that when the,

mounted in alincment with the shaft 17. Splined on the shaft 22 is a driving clutch element 23. This driving clutch element is adapt-ed to engage a clutch element at secured to the shaft 17 or a clutch element 25 secured to a gear 26 loosely mounted on the shaft 22. The gear26 meshes with a gear 27 on the rotatable screw 15. It will be seen that when the clutch element 23 is in engagement with the cement 21 the shaft 17 is rotated, thus moving the head transversely. When the clutch element 23 is in engagement with the element 25 the screw is rotated, thus moving the saddle 9 longitudinally. The ratio between the gears 26 and 27 is preferably so related to the pitch of the screw 15 and to the size of the gear 18 that the head and the saddle are given approximately the same amount of movement for a given amount of movement of theshaft 22. For reversing the rotation of the shaft 17 or of the screw 15 in order to reciprocate the head 10 or the saddle 9, 1 preferably provide means for automatically reversing the motor 20. As illustrated, there is a pilot switch 28 carried by the saddle 9, this switch having an arm which is adapted to be engaged by

dogs

29, 29" adjustablysecured to the head 10. At the ends of the head movements these dogs alternately engage the operating of the switch 28 and serve to reverse the motor in the way to be described. Also mounted on the saddle 9 is a switch 30 similar to the switch 28 and provided with a similar operating arm. Dogs 31, 31' are adjustably secured to the bed 1. At the ends of the saddle movement these dogs alternately engage the operating arm of the switch 30 and serve to reverse the motor 20 in the way to be described.

The diagram of electrical connections in Fig. i is a simplified one, and it will be understood that certain auxiliary and ancillary features may be added as required, these features being well known in the electrical art. If the clutch element 23 is in its lefthand position, so that the motor serves to reciprocate the head 10, then the motor is under the control of the switch 28. For con-- trolling-the main circuit of the motor there are provided two

operating solenoids

32 and 33 which respectively control switches 34 and 35 and 36 and 37. If the tool is set to cut on its outward stroke, as illustrated in Fig. 1. the switch 28 is moved toward the right (Figs. 1 and 41) to start the motor in the cutting direction. Such movement of the switch closes a circuit from the positive main through the contacts of the switch 28 and through the coil of the solenoid 32 back to the negative main. The solenoid 32 is energized and its (016 lifts, thus closing the switch and opening the switch Vith the switch 34 closed, a circuit extends from the positive main through the switch 3% to the armature of the motor 20 and thence through the core of the solenoid 33 and the switch 37 back to the negative main. The motor then starts in the direction to move the head 10 outward. W hen the head 10 is moved outward to the desired extent, the dog 29 engages the switch arm, thus moving the switch toward the left. This movement of the switch breaks the circuit for the solenoid 32 and thus causes a dynamic braking circuit through the motor armature. This braking circuit extends from the armature through the core of the solenoid 32 to the switch 35 and thence to the switch 37 and the core of the solenoid 33 and back to the motor armature.

The continued movement of the switch 23 toward the left serves to complete the circuit through the coil of the solenoid 33, this circuit extending from the positive main to the switch 28 and thence to the coil of the solenoid 33 and back to the negative main. hen the switch 36 closes, a circuit extends from the positive main through the switch 36 to the armature of the motor 20 and thence through the core of the solenoid 32 and the switch 35 back to the negative main. The motor then starts in the direction to move the head 10 inward. hen the head 10 is moved inward to the desired extent, the dog 29 engages the switch arm, thus moving the switch toward the right. This movement of the switch breaks the circuit for the solenoid 33 and thus again closes the dynamic braking circuit through the motor armature. Subsequently, the motor is started in the direction first described and these operations are repeated, the motor thus being repeatedly reversed and the head 10 thus being reciprocated.

In order that the tool may be moved relatively slowly in the cutting direction and relatively fast in the return direction, I provide

adjustable resistances

38 and 39 which are adapted to be placed in circuit with the shunt field 40 of the motor. Associated respectively with the

switches

34 and 36 and adapted respectively to be opened simultaneously with the closing thereof, are switches ll and 42. By means of a menu ally movable switch 43 either of the switches 4-1 and 42 can be connected with the circuit of the shunt field so as to cut out the resistance 39. With the tool holder adjusted, as shown, for cutting in the outward direc' tion, the switch 43 occupiesits righthand position (shown in Fig; 1) and during the cutting stroke only the resistance 38 is in circuit, thus providing a strong field and a slow motion. On the return stroke the switch 42 open, thus phicing both of the resistances 3S and, 39 in the field circuit and providing a weaker field with a consequently higher speed. If the tool holder is reversed so as to cut in the inward direction, the switch 43is moved 'to its left-hand position, thus providing a slow speed during the inward movement and a higher speed during the outward movement.

- l i hen the clutch element 23 is moved to the right so that the screw is rotated to reciprocate the saddle the operation is similar to that already described except that the motor is controlled by means of the switch instead .of the switch 28. The two

switches

28 and 30 are connected in parallel and their operation is identical. It will be understood that the switch 13 is shifted to one position or the other in accordance with the adjustment of the tool holder 8 in order to provide a slow speed in the cutting direc tion and a faster speed in thereturn direction.

Feed is effected by slowly or intermittently rotating either the screw 15 or the shaft 17. For supplying power for this purpose, there is preferably provided an electric feed motor 44. This motor is connected through suitable speed-reducing gearing'4c5 with a short shaft e6mounted in alinement with the screw. 15. Splined on the shaft 46 is a driving clutch element 47. This driving clutch element is adapted to engage the clutch element 4C8 secured to the. screw 15, or the element 49 secured to a gear loosely mounted on the shaft 16. The gear 50 meshes with a gear 51 on the shaft 17. It will be seen that when the clutch element 47 is in engagement with the element 48 the screw 15 is rotated, thus moving the saddle 9longitudinally. When the clutch element -l7is in engagement with the element 49 the shaft 17 is rotated, thus moving the head 10 transversely. The ratio between the

gears

50 and 51 is prefer-ably so related to the pitch of the screw 15 and to the size of the gear 18 that the head and the saddle are given approximately the same amount of movement for a given amount ofmovement,

of the shaft 46. Operating levers 52 and 53 are provided respectively for the clutch elements 23 and LT, and these levers are preferably connected together, as for instance by a link 54-, so'as tobe' operated simultaneously. F or actuating the clutches there is provided a hand lever 55. VVhen-the clutch element 23 is moved to connect: the motor 20 with the shaft 17', the clutch element 47 is moved to connect the motor 44% with the screw 15; and, conversely, when the clutch element 23 is movedto connect the motor 20 with the screw 15 the clutch element a7 is moved to connect the motor 44 with the shaft 171 i I Preferably the feedmotor 44 is reversed,

being started first in one direction and then in the other at the ends of the movements of the head 10 or of the saddle 9, as the case may be. in order that the motor may move the screw 15 or the shaft 17 in one direction clutch 56.

only notwithstanding the reversing of the motor,'there is provided a reversibleratchet By reversing the action of this clutch, the power connection from the feed motor may be operative for either direction, thus-enabling either the screw 15 or the shaft 17 to be turned in either directionto effect feeding in eitherdirection.

The electricalconnections for starting the feed motor sl'in opposite directions at the ends of the movements of the head or the saddle, are indicated in Fig. 4;. If thehead 10 is being reeiprocated by the motor 20 tl1(3,'f6i motor 4 1- is mechanically connected to feed the saddle!) longitudinally as before described and toe pilot switch 28 is operative, as already stated. The switch28 is provided with supplemental contacts 57 shown aslocated at the bottom, and when the switch is moved to its right-hand position a circuit is established from the positive main through the, lower contacts 57 to a contact 58 of a limit switch 59. The limit switch 59 is preferably connected with the driving element of the reversible ratchet clutch 56 and, when the switch is. in the p0- sition shown in Fig. i, a connection ismade from the contact 58 to a contact 60. The circuit then extends from the contact 60 to the coil of a solenoid 61 and thence back to the negative main. The energizing of the solenoid 61 closes aswitch 62 and establishes a circuit from the positive main through the switches 3 1 and 62 to the armature of the motor 44; Then the circuit extends through thecore of the solenoid 33 and the switch 37 bacltlto the negative main.

The feed motor then starts, moving .the'limit stance the clockwise directionindicated in Fig. 4. The movement oftheliinit switch serves to disconnect the contacts. .58 and 60 and serves to connectthe contact 60 with a contact 63similar to the contact58. The breaking o the connection between the contacts 5S and (SOcauses the switch thus stoppingthe "feed motor. 1

When the switch 28 is moved toits left hand position, a circnit'is a ain established through the contacts'57, thiscircuit, however, extending through the contact 63 in.- stead of through the contact 58, Theswitch 62 is closedas before and a circuit is establishedthrough the motor armature, th-i s circuit extending front the. positive main through the switch 36 to the armature, and thence through the switch 62 to thecore of the solenoid 32 and the switch 35 back to the negative main. The feed motor then stops the motor as before In the waydee II 62 to open,

scribed, the feed motor is given limited ro tation at the beginning of each movement of the head. i V i If the saddlel) is being reciprocated by the motor, 20 the :leed motor i l: is mechanically connected to TlCGLl the head ll) transvei y as before described. and the pilot switch to is operative as already stated. 'ilie operation of the feed motor is similar to that described except that it is controlled by means of contacts 6% on the switch 30. The motor is given limited rotation at the beginning of each movement of the saddle.

By means of the reversible ratchetclutch 56, the feed motor can be madeto etl'ect feeding in either direction. it will therefore be seen that when the head 10 is being re, 31'0- cated transversely a liniiteiil longitl'idiijial feeding movement in either direction can be given to the saddle by turning the screw l5 by means or the feed nioto "in the *ay de scribed. Similarly, when the saddle is being reciprocated longitudinally, a limited transverse feeding movement in either direction can be given. .to the head by turning the shaft 17 by means of the iced motor, in the way described.

Whatl claim is:

1. The combination 0i: a worl: table, a tool holder, an electric motor for causing relative reciprocation of such Nmembers either longitudinally or transversely, and means including automaticmeans for con-- trolling the operation of the motor for cans-- ing the reciprocating motion at the reciprocating member in either direction to be relntively slow and in the.o uiosite direction to be relatively fast.

2. The combinationo't a work table, a tool holder, an electric motor for causing relative reciprocation oit' such members either longitudinally or transvers dy, and switch means on the reciprocating member for automatically controlling the reciprcwation in either direction. i

i 'lhecombination of a. work table, a tool holder, an electric motor for causing relative reciprocation ot such members either longitudinally or transversely, and two switches arrange-din parallel for automati cally controllingthe transverse and longitw dinal reciprocations respectively.

4.,Tlie' combination of a work table, a

tool holder, an electric motor for catering relative reciprocation of 'such members either longitudinally or transversely, and two switches on the reciprocating member arranged in parallel for automatically con trollingthe transverse and longitudi: :il res ciprocations respectively.

5. The combination of holder, an electric motor for causing relative reciprocation of such members either longitudinally or transversel y and-l two switches arranged in parallel and operated a work table, tool therefor, means including a reversing electric motor for reciprocating the tool holder either longitudinally or transversely, means whereby the tool holder may be moved angu larly with respect to its supporting means into any one of four cutting positions corresponding respectively to the two opposite longitudinal strokes and the two opposite transverse strokes, and means for automatically reversing the motor.

7. The combination of a work table, atool holder, means including a reversing electric motor for eilecting relative reciprocation between the table and the holder, and means for causing the rotation of the motor in either direction as desired to be relatively slow and in [the atively fast. y

S. The combination of a work table, a tool holder,'means including a reversing electric opposite direction to be rel- -motor for effecting relative reciprocation between the table and the holder, an automatic switch for reversingthel motor, and means under the'control of the switch for causing the rotation of the motor in either direction desired to be relatively slow and in the opposite direction to be relatively fast. j i i i 9. Thescombination of aworl: table, a; tool holder, means including a reversing electric motor for effecting relative reciprocation between the table and the holder, an electromagnetic controlling mechanism for the motor, an automatic switch for operating the controlling mechanism to reverse the motor. and means under the control of the controlling mechanism for causingthe rotation of the motor in either direction as de sired to be relatively slow and in the oppo site'direction to be relatively fast.

10. The combination of a "work table, a tool holder, means including a reversing electric motor for effecting relative reciprocation between the table andthe holder, an automatic switch for reversing the motor, resistanceqtor the shunt field circuit of the .motor, automatic means {or placing the retable, a tool holder, means including a reversing electric motor for reciprocating the holder either longitudinally or transversely, means operative on the motor for causing the motion oi. the tool holder in either longitudinal direction or either transverse direction as desired to be relatively slow and in the opposite direction to be relatively fast, and means automatically reversing the motor.

12. In a shaper, the combination of a work table, a tool holder, means including a reversing electric motor for reci iirocatingig the tool holder eitherlongi rein-ally or trans versely, two pilot switches for reversing the motor one operative during longitudinal reciprocation and the other operative during transverse reciprocation, and means operative on the motor and controlled by the pilot switches for causing the motion of the head or saddle in one direction to be relatively slow and in the opposite direction to be relatively fast.

13. In a shaper, the combination of a bed, a saddle longitudinally reciprocable along the bed, a head transversely reciprocable on the saddle, a reversing electric motor, mechanism for optionally transmitting motion from the motor to reciprocate the saddle on the bed or to reciprocate the head on the saddle, two pilot switches carried by the saddle and each adapted to reverse the motor, adjustable dogs on thehead for operating one pilot switch, and adjustable dogs on the bed for operating the other pilot switch.

14. The combination of a work table, a tool holder, and means for causing relative reciprocation of such members either longitudinally or transversely and for automatically feeding one ot themembers transversely of either reciprocation, the said means including an automatically controlled electric motor adapted to perform one of the said movements in either of the said direc tions. 7

15. The combination of a work table, a tool holder, and means for causing relative reciprocation of such members either longitudinally or transversely and for automati cally feeding one of the members transversely of either reciprocation, the said means including an electric motor automatically controlled by the reciprocation and adapted to perform one of the said movements in either of the said directions.

16. The combination of a work table, a tool holder, means "for causing relative reciprocation of such members either longi tudinally or transversely and for automatically feeding one of the members transversely of either reciprocation, the said means including an electric motor, and switch means on the reciprocating member for controlling the motor.

17. The combination of a work table, a tool holder, means for causing relative reciprocation of such members either longitudinally ortransversely and for automatically feeding one of the members transversely of either reciprocation, the'said means including an automatically controlled electric motor, and means for causing the re ciprocating motion of the reciprocating member either longitudinally or transversely in one direction to be relatively slow andin the opposite direction to be relatively fast.

18. In a shaper, the combination of a work table, a tool holder, means including a single reversing electric motor for optionally reciprocating the tool holder either longitudinally or transversely, a feed motor, and automaticmeans operative on the feed motor for rocation of such members either longitudinally or transversely, and an electric motor for automatically and intermittently Feeding one of the members in a direction trans versely of either reciprocation.

22. The combination of a work table, a tool holder, means for causing relative reciprocation of such members either longitudinally or transversely, and an electric motor controlled by the reciprocation for automatically and intermittently feeding one of the members in a direction transversely of either; reciprocation.

23. The combination of a work table, a tool holder, means for causing relative reciprocation of such members either longitudi nally or transversely, a reversing electric feed motor for feeding one of such members in a direction transversely of the reciprocation, and switch means on the reciprocating member for controlling the operation of the motor.

24. The combination of a work table, a tool holder, two electric motors, one motor being adapted to cause relative reciprocation of such members either longitudinally or transversely and the other motor being' adapted to feed one of the members transversely of the reciprocation, and automatic means for controlling the operation otthe motors. v

25. The combination of a work table, a tool holder, two electric motors, one motor being adapted to cause relative reciprocation of such members either longitudinally or transversely and the other motor being adapted to automatically feed one' of the members transversely of the reciprocation,

adapted to automatically f of such members e'ithe and mechanism including svvitcn means co trolled by the reciprocati" g member tor i1 autonnitically controlling the motto. s,

26. The combination of a I tool holdeigtivo electric motor; being adapted to cause relative i ,7 of such members either long. flinally or transversely and the other motor being adapted to automatically ie :1 one of the members transversely ot thereciprocation, and mechanism including switch means on the reciprocating member for automatically controlling the motors.

27. The combination Of a work table, a tool holder, two electric motors, one motor being adapted to cause relative reciprocation of such members either longitudinally or transversely and the other motor being l 1 one of the members transversely the reciprocation, and means including two svritches onthe ciprocating member vtor automatically controlling the motors. 1 s

28. The combination of Worlr table, a tool bolder, two electric motors, one motor being adapted to cause relative l'GClpl'QCtllilOll of such members either longitudinally or transversely and the other motor l '1 9 adapted to automatically teed one of members transversely ot the reciprocation, and means including two, switches "for automatically controlling the relative reciprocation ot the said members in the said two \li-- rections respectively and another switch connected to the first two switches or mitomatically controlling the feeding 29. The combination of a tool holder, two electric mot being adapted to cause relatii e rcciproca of. such members either longitndi fly or transversely and the other motor heme,

.lnrocation adapted to automatically "steed one of the members transversely of the reciprocation, and means including; two switches arrang' "l in parallel for automatically controlling relative reciprocation and another swit ranged in series with the l i r i for automatically controlling the "l? movements. v.

80. The combination of a- Worl: table, a tool holder, tvvo electric motors, one motor being adapted to cause relative recipi a 1 1 r lol. transversely and the other adapted to feed one of the membc verselyof the reciprocation, and in cluding automatic means for cont operation of the motors for causing ciprocating motion of the reci member either longitudinally or t1 1 U in one direction to be relatively slow and in the opposite direction. to be relatively fast. 31. The combination of Work table, a tool holder, two electric motors, one mot-or being adapted to cause relative recipr0ca- 1 ,a'es eee tion of such members either longitudinally or transversely and the other motor being adapted to "teed one of the members transversely of the reciprocation, and means including automatic means for controllingthe operation of the motors for causing the reciprocating motion of the reciprocating member in either direction to be relatively slow. and in the opposite direction to be relatively fast. 1 p v 82. The combination oil? a work table, a tool holder, two electric motors, one motor being adapted to cause relative reciprocation of such members either longitudinally or transversely and the other motor being adapted to feed one of such members in either direction transversely to the recipro cation, and automatic meanstor conrolling the operation of the motors. p

33. In ashaper, the combination of a vvork table, a tool holder, means including a reversing electric motor for reciprocating the tool holdereither longitudinally or transversely, an electric motor for feeding the tool holder either transversely or longitudinally perpendicularly to the reciprocation, and automatic means for controlling the operation of the motors.

3a. In a shaper, the combination of a work table, a tool holder, means including; a reversing electrlc motor for reciprocating the tool holder either longitudinally or trans versely, an electric motor for feeding the tool holder in either direction either transversely or longitudinally perpendicularlyto the reciprocation, and ant natic means for controlling the operation of the motors.

The combination ol'ta work tool holder, means including a reversing electric motor for eitecting relative reciprocation between the table and the holder, means for causing the rotation of the motor in either direction as desired to be relatively slovv and in the opposite directionto be relatively fast, an electric motor for feeding; the tool holder either transversely or longitudinally perpendicularly to the reciprocation, and automatic means for controlling the operation of the motors.

3G. The combination of a Work table, a tool holder, means including a reversing electric motor for effecting relative reciprocation betvreen the table and the holder, means for causing the rotation Of themotor in either direction as desired to be relatively slow and in the opposite direction to be relatively fast, an electric motor "for feeding t 10 tool holder in either direction either transversely or longitudinally perpendicularly to the reciprocation, and automatic means for controlling the operation of the motors.

.37. In a shaper, the combination of abed, a saddlelongitudinally reciprocable along the bed, a head transversely reciprocable on the saddle, a reversing electric motor, mechtable, a

anism for-optionally transmitting motion from the motor to reciprocate the saddleon the bed or to reciprocate the head on the saddle, an electric feed moron and inechan'ism for optionally transmitting"[motion from the feed motor to feed the heaijlj when the saddle is reciprocated or to feed the saddle when the head is reciprocated,

38. In a shaper, the combination of a bed a saddle longitudinally reciprocable along the bed, a head transversely reciprocable on the saddle, a rotatable longitudinal screw, a nut carried by the saddle and engaging the screw, a rotatable longitudinal sharia, a pinion splined on the shaft and movable longitudinally with the saddle a trzuisverso rack on the head meshing with the pinion, a reversing electric motor, vmechanismfor op tionally connecting the motor to thescrc v to reciprocate the saddle or to the shaft to reciprocate the head, an electric feedmotor, and mechanism for connecting the feed metor to the shaft when the main motor is connected to the screw and for connecting the feed motor to the screw when the main motor is connected to the shaft.

.39. In a shaper, the combination of a work table, a tool holder, means including a reversing electric motor for reciprocating the tool holder either longitudinally or trans versely, two pilot switches for revers ngthe motor one operative during longitudinal reciprocation and the other operative during transverse reciprocation, an electric motor for feeding the tool holder either transversely or longitudinally perpendicularly to the reciprocation, and connections whereby either pilot switch serves to control. the feed motor. 7 w

40. In a shaper, the combination of a Work table, a tool holder, means including a reversing electric motor for reciprocating the tool holder either longitudinally or transversely, two pilot switches for reversing the motor one'operative during longitudinal. reciprocation and the other operative during transverse reciprocatiom an electric motor for feeding the tool holder either trans versely or longitudinally perpendicularly to the reciprocation, connections whereby either pilot switch upon being moved serves, to start the feed motor, and a supplemental switch for stopping the feed motor after movement to a predetermined extent.

41. The combination of a Work table, a tool holder, means for causing relative reciprocation of such members either longitudinally or transversely, an electric motor for automatically feeding one of the members transversely of either reciprocation, and means for readily changing the directions of the reciprocating and feeding movements.

42. The combination of a vvork table, a tool holder, means for causing relative reciprocation of such members either longitudinally transversely, an electric motor for autouiatically feeding one of the members transversely of eitherreciprocation, and a -'nglemeans forreadily changing the di 7 of the r ciprocating and feeding nioveii'iei'its K 43. The combination of a Work table, a

tool holder, an electric motor for causing 'relativefreciprocation of such members either longitudinally or transversely, an electric motor for autonuitically feeding one of the lllQHlbQfS transversely of either reciproca-r lion, and mechanical means for changing the directions of the reciprocating and feeding movements.

44. The combination of a Work table, a

tool holder, an electric motor for causing relative reciprocation of such members either longitudinally or transversely, an electric motor forau'tomatically feeding one of the members transversely of eitherreciprocation, and clutch means for changing the directions of the reciprocating and feeding ho der, means for causing reciprocation of the tool holder either "longitudinally or transversely, and means comprising a Worm and Worm Wheel for moving the tool holder about its vertical axis angularly with respect'to its supporting means into any one of four cutting positions corresponding respectively to the two 'oppositevlongitudinal strokes and the two opposite transverse strokes.

4.7. In a. shaper, the combination of a Work table a vertically extending tool holder,

means for causing the reciprocation of the tool holder either longitudinally or transversely and for causing themotion in either transverse or longitudinal direction to be relatively slow and in the other direction to be relatively fast, and means comprising a Worm and Worm wheel for moving the tool holder about its vertical axisangularly with respect to its supporting means into'any one of four cutting positions corresponding respectively to the two opposite longitudinal strokes and the two opposite transverse strokes.

48. In a shaper, the combinationof a Work table, a tool holder, means for causing the strokes, and means other than the reciprocating means for feeding the tool holder either transversely or longitudinally tranversely of 10 the reciprocation.

In testimony whereof, 1 hereto aflix'my signature. r

WILLARD T. SEARS;

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,423,266, granted July 18, 1922,

upon the application of WVillai-d T. Sears, of Montclair, New Jersey, for an improvement in Shaping Machines, an error appears in the printed specification requiring correction as follows: Page 5, line 83, claim 19, before the Word feeding insert the Words and intewnzittentky; and that the said Letters Patent should be read With this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 29th day of August, A. D., 1922.

[SEAL] KARL FENNING,

Acting Commissioner of Patents,