US1515039A - Metal-working machine - Google Patents

Description

B. M. w. HANsoN METAL WORKING MACHINE Filed Dec.

8, 1921 v 7 sheets-sheet 1 Nov. 11 1924. f 1,515,039

B. M. W. HANsoN METAL WORKING MACHINE Filed Dec. 84 19?] Sheets-Sheet 2 Nov. il 1924.

` B. M. W. HANSON IVIE'LALv WORKING MACHINE S 1921 '7 Sheets-Sheet 5 Filed Dec.-

Snom/Ufo@ mangi' @WJ @uba/140cm Nov. 11 1924. 1515,039

B. M. W. HANSON METAL WORKI NG MACHINE Filed Dec.. 8, 192] 7 Sheets-Sheet 4 f. & /lg.4

164; 5f g3 51197 Il f/ I/ l @o @3 if f i "1x f :l I y f.. riz A .M1 /m f6 V59 i .Y Y Y Y ff 1 Y Y v Y "I Y Nov. 11, M924., 1,515,039

B. M. W. HNSON METAL WORKING MACHINE @mma/aw ov. H 1924 E. M. W. HANSON METAL WORKING MACHINE Filed Dec. 8.

7 Sheets-Sheet 6 Nov. H, W24.

B. M. W. HANSON METAL WORKING MACHINE Filed Dec 8, 1921 7 Sheets-Sheet '7 4BENefr M. w. HANsorLor HARTFORD, CONNECTICUT.

' `mranwonmne MACHINE Applicationled-December 8, 192i. Serial No. 520,856.

To all ,who/m. t may concern:

Be it known thatLBENGrM. W. HANsoN, a citizen of the UnitedStates, and resident of Hartford,T county of Hartford, State of Connecticut, have' invented certain new and useful Improvements in Metal -Working Machines, of which the following is a -specication The present 4invention relates to metalv working machines, andv has particular reference to a machine for generating or operating upon serratedor toothed members.

As an instance of a use to which the machine forming the subject matter of the present invention may be applied, reference may be had to the final finishing operation on the ,serrations or teeth of a jaw or block Ifor gauging threaded members, such, a jawy being villustrated l.and described in my co-pending application S, No. 461,956, filed April 16th, 1921. I desire it, however, to be clearly understood-'that the pr'esent disclosure is by way of exempliication only; that the invention is 'susce tible of various embodiments and modi cation, 4and that the terms here used are merely terms of description and notterms of limitation. It will further` be obvious that many features of construction are'susceptible of modification to suit differ- Aent requirements without departingA fromv thespirit of the invention.

It is the aim of the invention to provide a machine ofthe character described having various features of novelty and advan- Fig. a is a front View of the bed'of the` machine with the front coverremoved andY a portion of the front wall of the bed broken y away so as to show the driving connections,

Fig. 4 is a ysectional view taken substantially on line 4-4 of Figs 2 and 5,

Fig. 5 is a sectional view taken substantially on line 5-5 of Fig.4, k

Fig. 5a is a detail view showing the manually operable means for disconnecting the work carrier from the automatically operated indexing means,

Fig. 6 is an enlarged view showing the -means by which the work carrier is automatically stopped,

Fig. 7 is a detail View of the metningy mechanism for the means for moving the work support step by step, and

Fig. 8 is a diagrammatic view illustratino the manner in which a piece to be operated upon isA positioned on the work carrier.

In order that the detailed description of the' construction of the machine and its mode of operation which are to follow may be better understood, a very brief statement of thel general construction and operation of the machine will here be given. The machine is provided with a base a from Vthe rear edge of which arises a standard b on which is mounted, for vertical adjustment,

'a'housingor mounting c for the tool which is here shown as being in theform of a grinding wheel d. e is a truing device carried by the standard b and so arranged that it may be employed for sharpening or resurwheel without disturb-v facing the grindin ing the relation o the wheel to the work. Mounted on ways f on the top of the bed a. is a work carrier or support including a slide or carriage g which'is adapted to be 'indexed or moved step' by step'in accordance with the normal Vdistance between thesuccessive serrations'olr' teeth-on the gauge block to be operated upon. The work support also includes a table h mounted upon the carriage g and reciprocable' at right angles to the indexing movement thereof.

The work to be operated upon is secured on the table h in'any suitable manner; in the present instance` a magnetic chuck v1 being shown for this purpose. The carriage q is indexed through the driving connections which include the escapement ratchet clutch mechanism lc, the Geneva motion device Z andthe train of gearing shown in Fig. 3. The table` k is reciprocated through the driving connections which include the reversing clutch mechanism indicated generally by the letter m and the escapement ratchet clutch mechanism n which controls the reversing clutch m. The escapement ratchet clutch mechanisms 7c and n, as hereinafter described more in detail, are controlled by the movement of the table h..

In Fig. 8, I have shown.I for illustrative purpose,athread gauge block 2c such as the present machine is adapted to operate upon so as to bring the serrations of the block in exact conformity to the groove of a thread of given pitch and diameter. The linear pitch of a thread is measured along a. line parallel to the axis of the screw, and the shortest distance (that is the normal pitch) between successive threads of the screw is less than the linear pitch; that is to say, if the screw thread is 87 pitch, the normal pitch between successive threads is slightly less than one-eighth of an inch. The lead of the thread of a screw and, therefore, its normal pitch, will vary with the linear pitch and the diameter of the thread. This means that when the normal pitch is to be determined, both the linear pitch and the diameter of the screw must be considered. In thejaw block shown in Fig. 8, the edge 10 at the end of the serrations corresponds to a line parallel to the axis of a threaded member and the serrations are spaced along this line in accordance with the linear pitch of the threaded member to be gauged. The normal pitch .is measured along the line 11- 11 which is at right angles to thelength of the serrations. The gauge block, as shown, is positioned on the work table with its serrations parallel to the edge of the grinding wheel and the line of movement of the work table. The carriageg with the work,

table and the work thereon .is indexed on a line at right angles to the length of the serrations so as to bring the successive grooves into proper alinement with the grinding wheel. In order to relieve the operator setting up the machine from making calculations to determine the extent to which the carriage g should be moved to properly index it (and which calculations, as stated, would have to take into account the lead of the serration as well as the linear pitch thereof), I provide in series one set or train of interchangeable gears for taking care of the linear pitch of the serrations and a second set or train of interchangeable gears for compensating for the difference between the linear and normal pitches, all as hereinafter described more in detail. p

ln operation, the table is advanced and returned on a straight line while the tool is operatingr on the work, and after the work has clearedD the tool and while the table is finishing its return stroke and-starting on its next forward stroke, the carriage g is indexed so that by the time the work is again brought` up to the tool it is moving in a straight linc with the next groove in alinement with the tool. Thus it will be seen that the work is indexed while it is being moved away from and up to the tool. The indexing movement of the work is brought about with a smooth movement, free from jars or vibrations, and with every assurance of uniformity and accuracy.

Referring now more in detail to the construction of the machine, 25 designates a drive shaft journaled in the rear wal'l of the bed a and having a pulley 26 for a belt 27 which also passes about a pulley on the grinding wheel spindle 28 and a pulley 29 journaled in the free end of a lever 30 pivoted at its other end on a shaft 25. `With this arrangement, it will be seen that the housing c carrying the grinding wheel spindle may be vertically adjusted on the standard?) as by means of a handle 31 operatively connected to the housing in any suitable manner. The

belt 35 to a. main shaft 36 extending longitudinally of and through the bed of the machine. The shaft 36 is constantly driven.

The table h is reciprocated through the I following driving connection. Secured to the left hand end of the main shaft 36 is a spiral gear 37 meshing with a gear 38 on a shaft 39 on which is splined a bevel gear 40 meshing with a like gear 43 splined on ya longitudinally shiftable shaft 44 on which the reversing mechanism m is mounted. This mechanism includes a pair of opposed bevel gears 45 loose on the shaft 44 and meshing with a common bevel gear 46 operatively connected to a shaft 47 having a pinion 48 meshing with a longitudinally extending rack 49 on the under surface of the table it. The gears 40, 43, 45, 46 and the shaft 47 are journaled, against endwise movement, in bearings provided in a part 50 fixed to, so as to move, with the carriage g, the top wall of the bed a being slotted as at 51 to accommodate this part 50. Secured to each gear 45 is a clutch member 54 and fixed to the shaft 44 are clutch members 55, one for cooperation with each clutch member 54; Une of the clutch members 55 is provided with a'ring 56 secured to a fork power is transmitted from the shaft 25 through the gearing 34 and to withdraw the table. In Fig. 41tl1e clutch with a worm wheel 94 ,loose ona shaft 95. y

members 55-are shown in Aneutral position. Associated with this worm wheel 94 is the The reversing clutch mechanism is conescapement ratchet clutch mechanism k trolled .through the escapement ratchet which is similar to the mechanism n above clutch mechanism n. Thislatter mechanism described. The 'mechanism k has a conincludes a ratchet wheel 65 vfixed-to the shaft stantly rotating ratchet wheel 96 fixed to 36 so that it is constantly driven, a cam 66 the hub of the worm wheel 94; a disk 97 loose onthe shaft 36, and a spring pressed fixed to the shaft 95 andcarrying a spring pawl 67 carried by the cam. Fixed to the pressed pawl 98the automatic engagement rod 58 is an arm 68 Vhavingaroller which enof which with the constantly rotating gages inlthe groove of the cam 66. Periodic ratchet wheel 96 is controlled by an escapeengagement of the pawl 67 with the conlment yoke 99 fixed so as to move with a stantly rotating ratchet wheel 65 is conshiftable rod 100, movement of which is controlled by an escapement yoke. 70 havingI a trolled, as 'hereinafterdescribed, by the repair of diametrically opposite stops 71 -ciprocating movement of the work table la.

adapted to be alternately bron ht into the On the forward end of the shaft 95 (see Fig. path of travel of the pawl so that the cam 3) is fixed a driver orvcam disk 105 of the 66 is intermittently rotated throughan Geneva motion device l.' 0n the face of the angle of 180. The escapement yoke'70 is cam disk 105 are a pair of diametrically fixed to so as-to move with a longitudinally spaced rollers 106 which are adapted to enmovable rod 72 slidably supported in suitgage in the radial slots 107 of a driven memable bearings. For the purpose of insuring ber or wheel 108 fixed on a stub shaft 109. that the shaft 36 will stop in a. predeter- The slots 107 are four in number so that mined position whenthe pawl 67 is tripped,I upon cach half revolution of the disk 105' aspring pressed plunger 73 is provided for the shaft 109 with the parts thereon will engagement with notches in the periphery. make one-quarter of a revolution. Fixed on of a disk 69 to which the pawl is pivotedthe shaft 109 is a large gear 110 meshing Movement of the escapement yoke 70 is with a gear 111 fixed Ona shaft 112. Power controlled by the reciprocating movement of is transmitted from the shaft 112 through the the table as follows The outer end 'of the gears 1138, 113", 113C, 114, 114", 1143.115, rod 72 is connected to a lever 74 pivoted in- 115", 115, 1156, to a lead screw 116 journaled termediate its ends as at 75. The upper end in and extending transversely of the bed and of the lever 74 carries a pin 76 which enpassing through a nut 117 inthe part 50 of extent of throw of the table in gages in a cam groove 77 of a collar 7 8l the carriage g. It will be seen with the arsplined on a rock shaft 79 and 'positioned rangement so far described when the'escapebetween butments 80 at the rear of the bed. ment ratchet clutch yoke 99 is-shifted, the The rod 79 is journaled in and fixed against cam disk 105 will make a half revolution longitudinal movement relative to the carand drive the wheel 108 Aand the gear I110 a riage g and at its forwardend carries a finfourth of a revolution. The gears 110, 111 ger 82 positionedbetween dogs 83, 84 seare in the ratio of one to four so that for cured to the side of the table h, one of these each half revolution ofthe cam disk 105 the dogs, 83, being adjustable so as to vary the shaft 112 is driven one -complete revolution. its recipro- The Geneva motion device provides means eating movement. for indexing the carriage during the recip- When theautomatically operated mecharocation of the table with a smooth movenism for reciprocating the table h is thrown 4ment free of jarsv and vibrations. To insure out, in which case the reversing clutch m is that the carriage -g and the parts carried in neutral position, the table may be manuthereby are uniformly and accurately inally moved through the following.arrangedexed, means are providedfor stopping and mentz- 85 is a -shaft (me Fig. 5) extending positioning the shaft 112 in the same an utransversely of the machine at right angles lar position each time it is operated. T is to the shaft 44, and having its forward end means includes alever 125 .pivoted as at 126 `squared as at 86 for the reception of a hanand having on its free end a pin or roller dle. Splined on this shaft and journaled in 127 of such diameter as to have wedgng fit a bracket 87 depending from the part 50 of in an inwardly tapering notch 128 in a disk the carriage, is a gear 88 meshing with a I129 fixed to the shaft 112. This disk has but gear 89 also journaled in the bracket S7-and one such notch. The cam. disk 105 is procarrying a bevel gear 89 meshing with the vided with a pair of lands 130 diametrically ear 46. g The means for moving,'step by step, the respective rollers 106. Upon each half revocarriage g with the table and work thereon lution of the disk 105 one of the lands 130 will now be described. Fixed on the `con will ride under a roller 131 on the lever 125` stantly rotating main shaft 36 is a gear 90 thereby lifting the lever and withdrawing meshing with a smaller gear 91 on a counterthe pin 127 from the notch 1128 so that the shaft 92 provided with a worm 93 meshing shaft 112 may be drlven through the Geneva v,

' disposed and spaced slightlyforward of the p motion device. After the disk 129 has started its rotary movement, a land 130 will ride from beneath the roller 131 so that the pin 127 will ride on ythe periphery of the disk 129, and when this disk has made one complete revolution, the pin 127 will drop back into the notch 128 insuring that the disk`129 together with the shaft 112 and the parts driven therethrough will always stop in the same position which meansthat the carriage g and the work thereon will be moved exactly the same extent each time they are indexed, f A

As has been previously stated, the gauge block is so positioned on the table that it is indexed at right angles to the length of serrations, that' is along the line of normal pitch. The normal pitch is less than the linear pitch of the serrations, the diiierence depending upon the angle of lead. In order to make the setting up ofthe machine as simple as possible, to avoid the necessity of making calculations, and so as to eliminate any chance of error, the present machine is provided between the shaft 112 and the lead screw 116 with two sets of interchangeable gears; one set (comprising the gears 113, b, etc.) being arranged to take care of the linear pitch and the other set (comprising the gears 115, b, etc.) which is in series with the first set, being arranged to compensate for the diil'erence between the linear pitch and the normal pitch. In actual practice, a plurality of interchangeable gears for each set or train Will be provided, and these gears will bear suitable indicia or numbers to indicate in what combinations they should be used to eiect the desired indexing movement of the Work.. The gears 113", b, etc. and 115, b, etc. are positioned at the front of the base and enclosed in a swinging cover 135 hinged as at 136 so these gears may be readily changed. The two sets of gears 113", b, etc. and 115, b, etc. lare connected by the gears 114, b, etc. which may be interchangeable if desired.

lThe escapement ratchet clutch mechanism Z: of the means for moving the carria e step by step, as just described, is control d by the reciprocatin4 movement of the table 7u through the fol owing mechanism: On the outer end of the longitudinally movable rod 100 carrying the escapement yoke 99, is a collar 150 with which cooperates one arm of a bell crank 151, the other arm of this'bell crank being connected by a link 152 to an arm 153 fixed to a stud 154 journaled in a bearing 155 rovided in a bracket 156 secured to the ront of the base. Fixed to the stud 154is a second arm 157 carrying in its free end a follower pin 158 which engages in a cam groove 159 of a cam plate 160 fixed to a. shaft 161 journaled4 agalnst longitudinal movement'm the bracket 156. In they present instance the cam` groove 159 is in the form/of a mu1ti-pointed star, each point, designatedby the numeral 159', being of like configuration `and having its opposite sides or portions of like len h and inclination relative to the radii 'o the cam plate 160. The shaft 161 extends along the side .edge of the carriage g and is supported by a bracket 162 fixed to the carriage g and having sliding relation to the shaft 161. Supported in the bracket 162 so as to move with the carriage g,and keyed to the shaft 161, is a ratchet vwheel 163 with which cooperates a pawl 164 ivoted to an arm 165 journaled on the sha t 161. The number of teeth on this ratchet wheel corresponds to the number Aof rises and falls of the cam groove 159. The arm 165 is normally held in raised position by a spring pressed plunger 168 so that an inclined surface 166 on this arm normally liesin the path of a dog 167 secured to the table h. The pawl 164 is held in engagement with the ratchet 163 by a spring pressed plunger 169 carried by the arm 165. It will be seen that each time the table la reaches the end of its return stroke, the dog 167 will depress the arm 165 and through the ratchet rotate the shaft 161 and the cam wheel 169y thereon a distance equalto one half of a star point 159', Whereupon the yoke 99 is shifted permitting the shaft to make ahalf revolution. It will be seen that by manually depressing the arm 165 the correct. number of times the carriage may be indexed to any desired position although the table is not being reciprocated.

For the purpose of permitting of manual movement of the carriage, either while the table is at rest or in motion, means is Aprovided (see Fig. 5a) for disconnecting the Geneva motion device from the train of gears between this device and the lead screw 116 for the carriage g. ln the presentinstance the gear 113 is fixed to the shaft 112, the outer end of which is squared as at 112 for the reception of a handle. The gear 111 which meshes with the large gear 110 of the Geneva motion device is hxed to a sleeve 171 loose on the shaft 112. This sleeve carries the disk 129 having a flange provided lWith a single notch or recess 172 in which is adapted to engage a finger 173 pivoted intermediate its endsto a plate 174 fixed to the shaft 112. The finger is normally urged into the notch 172 by a spring pressed plunger 175. The linger 173 is swung out of the notch 172 by manually pulling 17,6 connected to a lever 177 pivoted as at 178 and carrying a projection 179 abuttin against the tail end of` the finger 173 and opposed to the spring pressed lunger 175. It will be seen lthat when the Enger 173 is thus disengaged from the notch in the disk 129 the shaft 112 isdisengaged from the Geneva motion device and'may be manually out a rodl llO l in the same relation.

"For the purpose of automatically stopping the machine when the operation upon the work is completed, that is, after all serrations on the ,gauge block operated upon have been successively ground, the following arrangement is provided: Journaled in suitable brackets 180 Von the right hand vend .of the base (referring to Figs. 2, 4, and6,

for instance) vis a shaft 181 carrying an adjustable collar 182provided with a radially extending 'linger 183 with which a dog-184 adjustably secured .to the right hand end of the table g is adapted to cooperate when the grinding operation on the work is completed. Rocking movement of the shaft 1-81 is transmitted by an arm 186 fixed thereto '181 as by anda link 187 to a lever 188, the free end 189 of which when .lowered into the path of .movement of the pawl'67 of the ratchet clutch mechanism m is adapted to trip the Same. When the p'awl is thus tripped the ratchet clutch mechanism stops in such Apositionthat the reversing mechanism m 1s 1n neutral position. For the purpose of holding the llever 188 in engagement with` the pawl 67 the shaft 181 carries a disk 192' rovided with an eccentricallyl disposed re 193, in which is mounted a spring pressed plunger 195 adaptedlto engage in a bore 194in the bracket 180 when the shaft181 is rocked by the engagement of the dog 184 Withl the linger ofthe collar 182.'v When it is desired to throw the machine into opera-A tion the plunger 195 is withdrawn from the bore 194 by pulling out on a knob 196 se` cured to the plunger 195,- whereupon the spring pressed Yplunger 190 will raise the lever 189 out of en agement with the pawl 6.7. Furthermore, t e power may be thrown voli" the machine at any time during the operation upon the work by rotating the shaft means of ahandle 197 secured to the disk 192; Also, the 'reversing clutch m means of a handle 198 secured to the sha `58 which carries the clutch fork 57,.

. In setting up the machine, a piece of work is positioned upon the chuck with the serrav tions of the chuck parallel to the edge of the "nding wheel and the line vof reciprocaloln of the table h. Tolthis end, a work positioning device such as shownv in Fig. 8 .may be provided.` This device is in the Storm of a pivoted vmember 200.havin a straight edge 201` aga-inst which the e e ofthe work lis adapted to engage anda sc e niark 202 cooperating with a scale 203 on the top of the chuck. For the 'convenience of the operator of |the machine a table of calculations (notshown) may be provided to indicate. what the setting of the work positioning device 200 should be for gauge blocks having serra'tions of different pitches and leads. Also, in setting up the machine the operator, for the reasons heretofore' mediate set 114, 11421143, so that in eiect these three trains of gears are a sin le train leading from the Geneva motion the lead screw 116 for the carriage. The difference ,between the normal pitch and the linear pitch of the serrations, andfwhich difference the set of gears 115, 115", 115, compensates for, is indicated as at 205 of Fig. 8. The operator will now properly set the dogs -on the tableI and carriage, and in doing this may manually move the carriage' and table by turning the shafts-112 and 86, respectively.

In operation, the table will advance on its forward stroke moving the first serration' of Ythe gauge block into engagement with the grinding wheel, and at the end` of the forward stroke of the table the'dog 83 will engage the finger or -trip 82, and -through the rod 79 and lever 74 the escapement yoke 70 will be shifted' whereupon'the cam 66 is rotated through an angle of 180, the result being that one set of clutch members 54, 55.0f the reversing clutch mechanism will be engaged and the other set will be disengaged, thus changing the direction of movement of the table. The table, on its return movement, andwhile the tol is in evice to y same line as on its forward movement.

167 will engage the arm 165 causing the cam plate 160 to rotate through a-distance equal to one side of a. star point thereof,

` andthrough the connections described, shift the yoke 99 of the esca ement clutch mechanism through which t e carriage g is 1n- `dexed. When this yoke is shifted the cam disk 105 will make a half revolution andthrough' the Geneva motion device and the tate the lead screw through an an le which will index the carri e seas to ring the second serration of t e giunge block. intov n in \ After the work has cleared-the tool, the dog train of gears which this device drives, ro'

trolling the indexing means for the carriage, the dog 84 will engage the finger 82 Y whereupon the escapement clutch mech- "anism n is again actuated to reverse the direction of movement of the table. It will be seen that the indexing movement of the lcarriage takes place during the time that the table is completing its return stroke and 'starting on its forward stroke, this indexing lever 188.

The truing device e and the manner in which it operates will now be described. As previously stated, this truing device is so arranged that it may be employed for sharpening or resurfacing the grinding wheel without disturbing the relation of the wheel to the work. Referringto Figs. 1 and 2, where the truing device is most clearly shown, 215 designates. a bracket mounted 'for vertical adjustment on the standard b and having a segmental plate 216 to which is pivoted, by means of a pivot pin 217, a carriage 218. The axis of the carriage,

namely the pin 217, is at right angles to the axis ot the grinding wheel and lies in a plane including the edge of the grinding wheel. 219 is a vertical shaft journaled in the carriage 218 and with its axis at right angles to that of the pivot pin 217 about which the carriage turns. Mounted in the arm 220 of the shaft 219 is a sharpening tool 222, shown as a diamond point which is well adapted for resurfacing the grinding wheel. For the purpose of properly ad- 'usting the diamond point, a gauge 223 may e provided, this gauge, in the present instance, being in the form of a yoke pivoted to the arm 220 so that it may be thrown up out of the position shown when the grindingwheel is to be resurfaced. For the purpose of indexing the diamond point to the proper position relative to any one of the faces of the grinding wheel` the segmental plate 216 is notched as at 225 to receive a spring pressed plunger 226 mounted on the carriage. The position of the notches 225 will, of course, vary in accordance with the angle of the thread to be cut.' It will be noted that the grinding wheel. when it is adapted to resurface the same, is moved in the plane in which it rotates and the truing device, though adjustable, is for practical `purposes fixed to the bed of the machine imanes and, therefore, has a predetermined relation to the work carried by the table. Since the grinding wheel is movable only in one direction to and from the truin device, the alinement of the truing device and the wheel is never changed, thus the wheel may be resurfaced as many times as may be necessary and it is always certain that when it is brought back into contact with the work its shape and relationship thereto is unchanged from the original setting.

I claim as my invention 1. In a machine of the characterv described, a tool, an indexible carriage, a slide mounted for reciprocation thereon at an angle to the direction in which said carriage is indexed, means for indexing said carriage and slide, and means for reciprocating said slide, both of said means being controlled by themovement of said slide.

2. In a machine of the character described, a tool, a bed, a carriage adapted to be indexed thereon to bring successive portions of the work into alinement with the tool,a table on said carriage and reciprocal at right angles to the direction ot movement thereof, means for reciprocating said table, means for indexing said carriage with the table thereon, means on said table controlling said reciprocating means and other means on said table controlling said indexing means.

3. In a machine of the character described, a rotary grinding wheel having its edge' shaped correspondingly to a screw thread, a carriage adapted to be moved step by step to bring successive portions of the work into alinement with the grinding wheel, a table mounted on said carriage for reciprocating movement at right angles to the direction in which said carriage is indexed, means for reciprocating said table, and means for indexing said carriage with the table thereon.

4:. In a machine oi the character described, a tool, a work support including a .pair of slides one mounted upon the other, means for reciprocating one of said slides, means for indexing the other of said slides at an angle to the direction in which the first slide is reciprocated, and dogs on said reciprocating slide for controlling both of said means, one at least of said dogs being adjustable.

5. In a, machine ofthe character described, a tool, a work support, means for reciprocating said support including a power operated clutch controlling the direction of travel of said support. means for indexing said support at an angle to its reciprocating movement and including an intermittently actuated power operated clutch, and means movable in unison with said supportl for controlling both of said clutches.

` 5. In a machine of the character described,

a. tool, a` support, means for reciprocating i -ratchet clutch mechanism, and automaticala tool, a Work support includinga pair of ly operated means controlling both of said mechanisms. v

'7. In a machine of the character described,

slides one mounted upon theother, means for reciprocating one .of said slides includ- -ing a power operated clutch, means for indexing the other of said slides atan angle to the direction in which the first slide is .reciprocated and including an automatically operated clutch, and means movable in unison With the first mentioned slide for controlling said lclutches.

8. In a machine of the character described, a tool, an indexible carriage, a slide mounted for reciprocation thereon at an angle. to the direction in which said carriage is indexed,

, means gtor moving said slide including an escapement ratchet clutch mechanism controlling the direction of travel thereof, means for indexing said carriage and including an intermittently 'actuated esca-pement ratchet clutch mechanism, a pair of dogs on said table controlling the first mentioned clutch, and a dog on said table controlling the second mentioned clutch, one, at least,

of said dogs being adjustable.

9. In a machine of the character described, y

a grinding Wheel, a carria e indexible axially thereof, av table mounte on saidcarriage for reciprocation at right angles tothe direction' in which said carriage is indexed, automatically 'operated vmeans for 'indexing said carriage, and automatically. operated lmeans for reciprocating said table. l

10. In a machine of he character described, a tool, an indexible carri-age, a table mounted for reciprocation on said` carriage,

means for reciprocating said table including a clutch controlling the direction of movement thereof yand` an esca ement ratchet clutch controlling said rst mentioned clutch, and means for indexing said carria e and including a Geneva motion device an an escapement ratchet clutch mechanism controlling the same. f

11. In a machine of the character described, a tool, an indexible carriage, a table mounted for reciprocation on said carriage,

meansfor reciprocating said table including 1 2. In a machine 'of thecharacter described, a tool, a. work support, means for reciprocating said support, and means forindexmg said support during the llatter part of its reciprocating movement in one direction and the first part of its movement in the other direction.l

13. In a machine of the character described, a tool, a work support, means for reciprocating said support, and means for indexing'said support each 'timey the su port is'completng one reciprocating cyc e and starting on the next cycle. i

`14:. In a machine of the character described, a too/1,a Work support, means :Eon-v reclprocating said support, means for index-` ing said support including a Geneva motion device and a power operated clutch controlling said device, and means movable in unison \\-'ith said support for intermittently actuating said clutch as said supportv approaches the end of its return stroke.

l5. In a machine of the character described, a tool, a work support, means for reciprocating said support and controlled byy the movement thereof, and means for indexing saidsupport including a Geneva motion device, and an Iescapemlent ratchet clutch mechanism controlling said device and in turn controlled by the reciprocating movement of-said support. y.

1.6. `In a machine` of the character described', a tool, an indexible carriage, a table mounted tor reciprocationA thereon, means for reciprocating said table. on said carriage, and means for indexing said carriage while vsaid table is completing one stroke and starting on the next one.

17. In a machine of the character Lde- `scribed, a tool, an indexible carriage, a'redil() including a Geneva motion device,A air` escapemcnt ratchet clutch mechanism controlling said device, and a dog on said table controlling said clutch.

1.8. In a machine of the character described, a tool, 'a Work support, means for reciprocating said support, means for index-- ing said` support equal distances andy including an intermittently actuated me-v chanical train positively connected to said support, and'means 4rfor -positioning' said train in like position each time it is actuated.

19. vIn-l a machine' of the character described, a tool, a work support, means for indexing said support equal distances and including a rotatable member adapted to rotate one complete revolution each time Vsaid indexing means is actuated, and means cooperating with thefsam'e portion of said member eachl time itfsiactuated for `positively positioning the same in thesame' anguiar position,

20. In a machine of the character described, a tool, a work support,means for indexing the same equal distances and including a mechanical train positively connected to said support, a rotatable member connected. to said train and adapted to be rotated one complete revolution each time said train is actuated and having a recess, and means adapted to engage in said recess to position said member in the same angular position each time it is actuated. i

2l. In a machine of the character described, a tool, a work support, means for indexing the same including a mechanical i trainpositively connected to said work support and mechanism for intermittently driving said train, a rotatable member positively connected to said train and rotated one complete revolution each time said train is actuated, a tapering notch in the periphery of said member, and a pin adapted to wedgedly engage in said notch to position vsaid member in the same position each time tate. one complete revolution each time the train is driven, and means associated with said last mentioned member and controlled by said cam forpositioning said member in the same angular osition each time said work support is indexed.

23. In a machine vof the character described, a tool, a work support, means for indexing said support including a mechanical train positively connected to said support and. a Geneva motion device through which said train is driven and including an intermittently actuated driver and a driven member, a cam adapted to rotate in unison with said driver, a member positively connected to said train and adapted to rotate one complete revolution each time the train is driven, and means controlled by said cam and cooperating with said member for positioning the same in the same angular position each time said train is operated. A

24. In va machine of the character described, a tool, a work support; means for indexing said support including a mechanical train positively connected to said support, and a Geneva motion device through which said train is driven andv including a driver and a driven member; a rotatable member positively connected to said train and adapted to rotate one complete revolution each time the same is driven, said rotatable member having a notch in its periphery, a pin adapted to automatically fit in said notch each time said member is brought to the same position, and a cam associated with said driver for lifting said pin out of said notch to permit said train to be driven. i

25. In a machine of the character described, a tool, a work support,.and means for indexing the same including a Geneva motion device having a driver provided with a pair of diametrically spaced pins and a driven member having four radial slots in which said pins are adapted to engage,

a shaft connected to said driven member 1nthe ratio of one to four, means for intermittently rotating said driver 180, and a mechanical train between said shaft and support.

26. In a machine of the character described, a tool, a work support, means for indexing the same including a Geneva motion device having a driver provided with a cam surface and with a pair of diametrically spacedpins and a driven member having four radial slots in which said pins are adapted to engage, a shaft connected to said lto engage in said notch.

27. In a machine of theI character described, -a tool, a Work holder, and means for indexin the latter including inter'- changeable riving members adaptedv to be arranged to step said holder a distance in accordance with given measurements of the work, and other interchangeable driving membersv in series with the first ones and` arranged to modify the action thereof.

28. In a machine of the character described, a tool, a work holder, and means for indexing the latter includinr two sets l'of interchangeable gears arranged in series,

one set being arranged to step said holder in accordance with given measurements of the work and the otherset being adapted to be arranged'to modify the action of the first set. Y y

29. In a machine of the character described, a tool, a work support adapted t0 receive serrated members to be l operated upon having serrations corresponding to screws of given pitches and diameters, means for reciprocating said support lengthwise of said serrations, and means for indexing said support at right angles to the serrations, said indexin means including two sets of interchange'a le driving members arranged in series, one set of members being arranged to step said support in accordance with the linear pitch of the serrations, and the other set being arranged to modify the action ef niaoaa in series, one set being arranged in accordance with the linear pitch of the serrations and the other set being -arranged to compensate for the difference between the linear pitch and the normalpitch of the serrations.

31. In a machine of the character described, a tool, a work support adapted. to receive serrated members to be operated upon having serrations corresponding to screws of given pitches and diameters, means for reciprocating said support lengthwise of said serrations, and meansfor indexingsaid support at right angles to the serrations and including an intermittently driven member,

1 a lead screw connected to said support, and

a mechanical train between said member-and said support and includin one set of interchangeable gears arrange to step said support in accordance with the linear pitch of the serrations, a second set of interchangeable gears arranged to modify the action of the first set whereby the support is ste ped in accordance with the normal pitch o the serrations, and a third set of gears, connecting the other two sets in series. Y

32. In -a machine of the character described, a rotarly grindinfg indexible axial y thereo a table mounted on said carriage for-reciprocation at right angles to the direction in which said carriage isv indexed, means for reciprocating said table, and means for -indexin said carriage including interchangeable driving members adapted to bearranged to step said carriage a distance in accordance with given measure-y ments of the work and other interchangeable driving members in series with the first ones' and arranged tomodiy the action thereof. 33. In a machine of the character described, a tool, a work support, means for reciprocating said work support, means for indexing saidy support to successively bring different portions of the work into cooperative relation to the tool, both of said means being controlled by the reciprocating move.- ment of v.said support, and means controlled by the indexin movement of said support for automatica ly stopping saidy reciproeating means. -l

34. In la machine of the character described, atool, an indexible carriage, a table mounted for reciprocation thereon, means for reciprocating said table, means wheel, a carriagey fori indexing said carriage with the table thereon, both of said means being controlled by the movement of said table, and means controlled by the movement of said carriage for automatically stoppl g the machine when the work is completed.'

35. In a machine of theY character, dev scribed, a tool, a bed, a carriage mounted for index movement thereon to bring successive portions of the work into alinement with the tool, a table on said carriage and reciprocal at ri ht angles to the direction of movement t ereof, means for indexing said carriage, means for reci rocating said'table including an automatica y controlled escape` ment ratchet clutch mechanism, and means control-led by the index movement of said carriage for throwing said clutch into neutral position and thus1 stoppthevreciprocating movement of the table at a predetermined point. l

36. In a machine of the character described, a tool, an indexible carriage, a table mounted for reciprocation `thereon at an angle to the direction in which said carriage is indexed, means for indexing said carriage, means for reciprocating said table including a power operated clutch controllingv the di-y rection of movement thereof and an esca ement ratchet clutch mechanism controlhng said power operated clutch, both of said means controlled bythe reciprocating movement of said table, and means controlled by lthe indexing movement of said `carriage for automatically disengaging said ratchet clutch mechanism in va position where said power operated clutch is in o erative, thus stopping the movement of sai table.

37. In a machine of the character described, a tool, an indexible carriage, a table mounted for reciprocation thereon, means for indexing said carriage means for reciprocating said table including a clutch, and meanscontrolled by the indexing movement of the carriage for disconnecting said clutch to stop the reciprocatin movement of the table when the carriage a a predetermindposition, said last mentioned meansl includin a member adapted to co. operate with said clutch to throw the same into neutral position, a rock shaft,a connection between 'said rock shaft and member, a

trip on said carriage adapted'to rock said shaft and through said .connection move said member into operative osition,and normally active means for oldingA said rock shaft in rocked position.

38. YIn a machine of the character described, a tool, any indexible carriage, a reciprocating table thereon, meansfor reciprocating saidl table including a clutch, means for indexing said carriage, both of said means being controlled by the movement-of said table, and means for automatically stopping the machine including a member adapts been indexedtoA intermittently moving the same includinga clutch, ashaft, a cam member fixed thereto and having alternate rises and falls of like length, an operative connection between said cam and clutch, a ratchet Wheel fixed to ,said shaft and having teeth correspondin in number to the aggregate rises and falIs of said cam, a pivoted arm, a pawl on said arm cooperatin yvith said ratchet Wheel, and a dog on said'work holder adapted to move said arm the angular distance of one tooth. 40. In a machine of the character described, a tool, an indexible carriage, a table,

a trip thereon, means for reciprocating saidA table, means for moving said carriage step by step and including a clutch, a cam raving a plurality of successive rise and fall portions, a connection between said cam and clutch, and means actuated by said trip each time said table reaches the endof one of its strokes for moving said cam a distance of one of said portions.

41. In a machine of the character del scribed, a tool, an indexible carriage, a table mounted for reciprocation thereon, a trip on said table, means for .reciprocating said table, means for moving said carriage step by 4step and including a clutch having a part adapted to be shifted in one direction and then in the other direction, a. rotary cam having a groove in the form of a multi-point star, a follower in said groove, a connection between said follower and part, and means actuated by said trip each time said table reaches the end of one of its strokes for rotating said cam a distance of one-half of a star point. Y

42. In a machine of the character described, a tool, an indexible carriage, a reciprocal table thereon, a trip on said table, means for reciprocating said table, means for moving said carriage step by step and including a clutch, a cam operatively connected to said clutch and having a plurality of successive rise and fall portions of like lengths, and a device operatively connected to said cam and actuated by said trip each time said table reaches the end of one of its strokes, said device each. time it is actuated being adapted to rotate said cam the distance of one of said portions.

43. In a machine of the character described, a tool, an indexible carriage, a table 44,v In a machine of the character de-V scribed, a tool, a bed, an indexible carriage on said bed, a table mounted for reciprocation on said carriage, means vfor reciprocating said table, means for moving said table step by step and including a clutch having a part adapted to be shifted in one direction and then in the other direction, a shaft journaled in said bed, a cam on said shaft having a groove in the form of a {multi-point star, a connection between said groove and part, a ratchet wheel keyed on said shaft and indexible with said carriage and having twice as many teeth as points on said cam, an arm loose on said shaft, a paWl thereon cooperating with said ratchet Wheel, and a trip on said table adapted to enga e said arm to move said ratchet Wheel a distance of one tooth each time the table reaches the end of one of its strokes.

45. In a machine of 'the character described, a tool, an indexible carriage, a^table mounted for reciprocation thereon, means for reciprocating said table, and means for indexing said carriage step by step, both of said means beine' controlled bythe movement of said table, said indexing means being manually operable while said table is at rest on said carriage.

46. In a machine of the character described, a toolan indexible carriage; a table mounted for reciprocation thereon, means for reciprocating said table controlled by the movement thereof, means for indexing said table, controlling means therefor including a member having a limited rocking movement, and a trip on said table adapted to engage said member and rock the same each time the table approaches the end of one of its strokes, said member being adapted to be manually rocked to actuate said indexing means while the table is at rest on said carriage.

47. In a machine of the character described, a tool, an indexiblc carriage, a table mounted for reciprocation thereon, means for reciprocating said table, means ffor moving said carriage step by step and including a clutch, a cam having a pluralityv of successive rise and fall portions, a connection between said cam and clutch, a trip on said table, and means actuated by said trip each time said table reaches the end of lll) ` indexing said carria -to actuate said clutch.

48. In a machine of the character' described, a tool, a work holder, means for intermittently moving the same including a clutch, a shaft, a cam member fixed thereto and havingalternate rises and falls oflike length, an operative connection between said cam and clutch, a ratchet wheel fixed to said shaft and having teeth corresponding in number to the aggregate rises and falls of said cam, a pivoted armfa pawl on said arm cooperating with said ratchet wheel, and a dog on said work holder adapted to move said arm the angular distance of one tooth, said arm being manually operable to actuate said clutch when the table is at rest relative to said carriage.

49. In la machine of the character described, a toch-,ian indexible carriage, a reciprocating table thereon, means for reciprocating said table, and automatic means for including a periodically rotatable mem r, a member driven therethrough, means for detacliably connecti ing said members always in the saine relation, and means for manually traversing said carriage when said members are disconnected.

50. In a machine of the character de scribed, a tool, an indexible carriage, areciprocating table thereon, means for reciprocating said table, means for indexing said carriage including a periodicall v member, a member driven theret rough and havin a single recess a art carried by said rotata' le member an a apted to engage in said recess, means for disengaging said part from said recess, and means for manually traversing said lcarriage when said member is disconnected. f

51'. In a machine of the character described, a tool, a work support, means for indexing said support e ual distances and including an intermittent y rotatable member adapted to rotate one complete revolution each time said indexing mechanism is actuated, means cooperating with said member for positively positioning the same in the same angular position, a member driven by said rotatable member, means for detacliably connecting said membersalways in the same relation, and means for manually traversing saidcarriage when said members are disconnected.

52. In a machine of the character described, a tool, an indexible carriage, a table rotatable mounted for reciprocation thereon, means for reciprocating said table, means for indexing said carriage including an automatically operated clutcli, mechanism interposed between said clutch and carriage for throwing said carriage out of the control of said clutch, and means for manuall traversing said arriage when said mechanism is disena e g g3. In a machine of the character described, a tool, an indexible carriage, a table mounted "for reciprocation thereon, means for reciprocatin said table, means for indexing said carriage including a periodically actuated clutch controlled by the movement of said table, a Geneva motion device having a driven member, a mechanical train between said device and carriage, means for detachmember, and means for manuall traversin said carriage when said train is disconnecte from said driven member.

54. In a machine of the character described, a tool, an indexible carriage, a reciprocating tool thereon, means for indexing said carriage including an escapement clutch controlled by the movement of said table, means for reciprocating said table includin a reversing clutch and an escapement clutc controlling said reversing clutch andin turn controlled b the movement of said table, means for t rowing said reversing clutch into neutral position, and means for manually reciprocating said table when said re'- versing clutch is in neutral position.

55. In a machine of the character described, a tool, a bed, an indexible carriage thereon having a part depending into said bed a table mounted for reciprocation on said carriage, a reversing clutch mechanism carried by said part, a driving connection between said clutch and table, means for driving said clutch mechanism, and a lead screw connected to said part for traversing said carriage.

56. In a machine of the character described, a tool, a bed, an indexible carria e thereon having a part depending into said bed, a table mounted for reciprocation on said carriage, a pair of opposed gears journaled in said part, a driving connection between said gears and table, a longitudinally shiftable shaft journaled in said gears, means for driving said shaft, clutch members between each (gear and shaft, and means for shifting sai shaft to engage one pair of clutch members and disengage the other.

BENGT M. w. HANsoN.

`ably'connecting said train to said driven

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