US715524A - Nut-finishing machine. - Google Patents

Description

No. 715,524.v Patented Dec. 9. i902. y

u. TYBEHG.

NUT FINISHING MACHINE.

(Applicaion med oct. 4, 1899.) y (No Model.) 4 Y 8 Sheets-'Sheet 2.

WITNESSES: I I INVENTOR THE Nanms PEYEHS co.. w19-urna.. WASHINGTON. r.'4 c,

'I No. 7l5,524.

0. TYBERG.'

Patented use. 9', |902.

NUT FmlsHmG Mcm;

(No Model.) Y

(Appication tiled Oct. 4, 1899.)

8 Sheets-Sheet 3.

. Patnted Dec. 9. |902. l 0. TYBERG.

. NUT FINISHING MACHINE.

' (Application filed Oct. 4, 1899.)

ssheefs-shm 4.

(N9 Model.)

N nl N0.'7|5,524. Pafented Dec. 9. 1902. 1

. 0. TYBERG.

mir vFmlsmms m'AcmNE.

.fAppximion med oep 4,' 1899.;

(No Model.)

8 Sheets-Sheet 7.

TN: NORRIS PEER: au. tamu-m0.. WASHINGTON. n. cf

Patented Dec. 9, |902.

, No. 7I5,524.

n n/mans. uur Flmsnms nAcHmE.

Applxcatxon Bled Oct 4 1899) s shank-sheet a;

(llo Model.)

ED STATES:

PATIENT OFFICE.

OLUF TYBERG, OF BROOKLYN, NEW YORK, ASSIGNOR TO RUSSELL, BURD- SALL d WARD BOLT dt NUT COMPANY, OF PORT CHESTER, NEW YORK,

A CORPORATION OF NEW YORK.

VNUT-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 715,524, dated December 9, 1902- Application tiled October 4, 1899.7-Serial No. 732,539. (No model.)

To all whom, t may concern:

Be it known that I, OLUr` TYBERG, acitizen of the United States of America, and a resident of the borough of Brooklyn, count-y of 5 Kings, and State of New York, have invented certain new and useful Improvements'in Nut- Finishing Machines, of which the following is a specification. y

This invention relates to an improvement Io in nut-finishing machines, its object being to provide a machine for milling Ithe sides of hexagonal nuts.

The invention consists, primarily, in the employment of a carriage carrying a series of t5 milling-spindles and operating, in conjunction with an intermittently-rotatable turret, to finish the sides of a series of nuts carried by the turret all at the same time, and also in providing means for feeding and dischargzo ing the nuts to and from the machine automatically.

The invention will be hereinafter fully described, and specically set forth in the annexed claims.

25 In the accompanying drawings, Figure 1 is a plan view of the device. Fig. 2 is a front elevation. Fig. 3 is a side elevation. Fig. 4 is a partial sectional View 011 the line x Qoof Fig. 1. Fig. 5 is a partial section on the line 3o Q Q of Fig. 4. Fig. 6 is a section on the line Z Z of Fig. 1. Fig. 7 is a section on the line Y Y of Fig. 1. Fig. 8 is a detail elevation, on an enlarged scale, of the turret rotating and locking mechanism broken away from 35 the rest of the machine. Fig. 9 is a plan of the same with the turret removed entirely. Fig. 10 is an elevation, on an enlarged scale, of the finger and its actuating mechanism for transferring the nuts from the feed-tube to 4o the turret, partly sectional. Fig. 11 is a plan of the same. Fig. 12 is a side elevation of the Wrench and its actuating mechanism on an enlarged scale. Fig. 13 is a plan of the same. Fig. 14 is asection on the line R Rof 45 Fig. 13. Fig. 15 i's a section on the line S S of Fig. 13. Fig. 16 is a side elevation of the clutch mechanism on an enlarged scale, and Fig. 17 is a plan ofthe same.

In the construction of my device I employ 5o a bed-plate 1. At the sides of this bed-plate bracket 13.

the pillow-blocks 2 and 3 are mounted. Short vshafts 4 and 5 are rotatably mounted in journals carried by the pillow-blocks 2 and 3, re-

ing beyond the rear end of the pillow-blocks.

The Worm-wheels are of equal diameter and pitch and are actuated by the Worms 8 and 9, (see Fig. 7,) fixed on the Worm-shaft 10, which is mounted in suitable bearings 11 11, 6o carried by brackets, which form parts of the pillowblocks 2 and 3. The worms 8 and 9 are also of equal dimensions, so that the shafts 4 and 5 willboth revolve at exactlythe same speed. The shaft 10 extends toward 65 the right of the frame, and its overhanging end is supported by the bearing 12, carried by the bracket 13, which is fixed upon the rearendoftheframe. (SeeFigl.) Abevelgear 14 is tixed upon the extreme end of the 7o worm-shaft 10, and this gear meshes with a second bevel-gear on the end of a countershaft 16, mounted in bearings 17 17 on the Between the two bearings 17 17 three pulleys 18, 19, and of equal diame- 75 ter are mounted. The central wide pulley 19 runs loose on the shaft 16, while the narrow pulleys 18 and 20 are fixed on the shaft. The

pulleys 18 and 2O revolve at different speeds but in the same direction, the pulley 20 run- 8o ning faster than the pulley 18. Belts 21 and 22, controlled by the belt-shifter 24, transmit the motion from the line-shaft (not shown) to the pulleys on the counter-shaft at different speeds and through the .medium of the 85 bevel- gears 14 and 15 operate the Worm-shaft 10. Arms 23 23, fixed upon the bearings 17 17 carry the belt-shifter 24, connected by the link 25 with the lever 26. The lever 2,6 is fnlcrumed at 148 to a post mounted on Lthe bed, and its other end carries a roller 149, which engages the groove in the cam 46.

Referring now to Fig. 5, the shaft 5 has fixed upon its end opposite the worm-wheel 7 the disk 27. Upon the outer faces of the 95 worm-wheel 7 and the disk 27 and exactly opposite each other are the pins 28 and 29, the axes of which are eccentric with the axis of the shaft 5. Suitable bearings 30 30,

mounted on the pins 28 and`29, are carried Ico by the parallel arms 31 31, Fig. 1, of the spindlecarriage 32 and impart their eccentric motion thereto. Upon the shaft 4 opposite the Worm-wheel 6 and in line with the disk 27 is the cam-disk Pins 34 and 35, fixed in the outer faces of the worin-wheel 6 and cam-disk 33, respectively, are mounted in bearings 36, carried by the parallel arms 37 37 of the spindle-carriage 32. These pins 34 and 35 are placed in the same relative posi tion on the worm-wheel 6 and cam-disk 33 as are the pins 28 and 20 on the worm-wheel 7 and disk 27, so that the spindle-carriage is continnally movingin a vertical circle, its plane beingalways parallel with the bed of the machine. In Fig.7 the carriage 32 is shown in its lowest position and indicated by dotted lines in its highest position. The spindle-carriage 32 is a frame consisting of four parallel bars, having integral cross-bars 230 at either end to space said parallel bars, and the arms 31 and 37, which extend beyond the cross-bars and are defiected from the plane of the body of the frame. In this frame six milling-spindles provided with milling-cutters are mounted in the same horizontal plane and parallel to each other, the two outside spindles 264 and 265 being single and the four intermediary spindles 266 266 and 267 267 being mounted in pairs on the same axes.

The spindle-carriage 32 is positioned above a horizontal turret 110. This turret has six nut-mandrels 113, mounted vertically near the circumference land sixty degrees apart. The turret 110 is rotated intermittently while the spindle-carriage is in its higher position and in the manner hereinafter to be described, but when at rest is always located in such a manner that two of the nut-mandrels are at rest directly under the two hexagonal apertures 165 and 166 of the double Wrench 160, which is placed in front of the spindlecarriage 132, While the other four nut-mandrels are in such position relative to the eutters carried by the milling- spindles 264, 265, 266, and 267 that the sides of such nuts as may be carried by the nut-mandrels would be acted upon by the cutters when the spindle-carriage 32 is in its lower position. As the turret is rotated sixty degrees at a time in the direction indicated by the arrow the nuts which arescrewed on the nut-mandrel 113 when positioned below the hexagonal aperture 166, in a manner hereinafter to be described, are successively brought into the several positionsindicatedin Fig. 1. By each movement of the turret the relative positions of the nuts to the axes of the milling-spindles are changed sixty degrees, so that the unfinished sides of the nuts are successively presented to the milling-cutters. When all six sides of the nuts have been milled, the nuts are brought directly under the hexagonal aperture 165, where they are removed in a manner hereinafter to be described.

The pin 29, Fig. 5, has a pin 40 projected frornits face, and this pin 40 is engaged by the yoke 41 upon the end of the cam-shaft 42, mounted in suitable bearings 43 43 on the bed, Fig. 1. The axis of the cam-shaft 42 is in line with the axis of the shaft 5, so that through the medium of the pin and yoke it is rotated at the same speed as the shaft 5 and in the same direction. Upon the cam-shaft 42 the cams 44, 45, 46, and 47 are fixed, the functions of which will be hereinafter separately described.

Upon the rear end of the bed a bracket 50 is fixed, and upon this bracket the upright 51 is mounted. This upright 51 carries at its upper end a bearing 52, in which the shaft 53 is journaled. The shaft 53 overhangs the bearing on both sides, and upon'its outer end the double pulley 54 is fixed. A belt 55 transmits the motion from the line-shaft (not shown) to this pulley, and the belt 56 transmits the motion from the smaller face of the pulley 54 to the pulley 57, fixed upon the end of the shaft 58, which extends across the machine transversely below the bed and is mounted in suitable bearings 59 59 for pur poses to be hereinafter described.

Upon the inner end of the shaft 53, close to the bearing 52, the pinion 60 is fixed, Fig. 6. This pinion meshes with the internal gear 61, fixed on the end of the shaft 62, mounted in bearings on the spindle -carriage 32. The milling-spindles 264 265 266 267 are mounted in suitable bearings in the spindle-carriage 32 parallel to the shaft 62 and in the same horizontal plane. The motion is transmitted to these milling-spindles from the shaft 62 through the medium of the gears 65 65, fixed upon said spindles and upon said shaft. (See Fig. 1.) The internal gear 61 is so proportioned to the pinion 60 that they are always in mesh while the carriage describes its circular motion, and in consequence the millingspindles are continuously rotating while the machine is working.

Referring particularly to Figs. 4, 6, 8, and 9, at a point under one side of the center of the carriage and near the center of the bed l a recessed housing is mounted, and in this recessed housing a bushing 71 is fixed. This bushing 71 is tapered at its inner periphery at both ends, and within said bushing the turret 110 is rotatably mounted. A ratchet-wheel 76 is secured to the lower end of the turret 110 by means of the screws 77 77. This ratchet-wheel is provided with six teeth, corresponding to the number of nut-mandrels 113 on the turret, to be hereinafter described. At a point adjacent to the ratchet-wheel a lever 8O is fulcrumed to the bed at its under side, and the free end of this lever is pivoted to one end of an arm 81, upon the opposite side of which a Wrist-pin 82 is fixed. This wrist-pin is adapted for engagement with the teeth of the ratchet and is held in contact with said ratchet-wheel by the action of the spring S3, one end of which is fixed to the lever and the other to the arm 81. A rod S4 :is pivoted to the lever 80 at a point between its IOO IIO

fulcrum and the pivot connecting it with the' arm 81 and projects throughV an aperture in the left side of the frame, and its end is pivoted to one arm of the bell-crank 85,fulcrumed at 86 to the side of the pillow-block 2. The upper arm of this bell-crank has a wrist-pin 87 thereon, and on this wrist-pin the roller 88 is mounted. The roller 88 contacts with the underside of the cam-disk 33. A spring 89, connected with the lower arm of the bellcrank and the under side of the bed, normally holds the turret-revolving mechanism in the position shown in Fig. 8 by full lines, keeping the roller 88 in contact with the cam-disk 33.

The locking-pin 90 is vertically .slidably mounted in the bearing 91 and in the housing 92, mounted on the base of the housing 70. Within the housing 92 the pin 90 is provided with a collar 93, fixed thereon, and a spiral spring 94 normally holds said pin in the position shown in Fig. 8, locking the turret. The pin is provided with a transverse slot 95 at a point adjacent to its upper bearing, and a wrist-pin 96, fixed in the end of one arm of the bell-crank 97, engages this slot. The crank 97 is fulcrumed at 98 to an upright mounted on the bed 1. The other end of the crank 97 extends over the shaft 4, and a roller 99 contacts with the shaft 4. A cam-block 100 on the shaft 4 is adapted to intermittently raise the upper end of the crank 97, and thereby withdraw the locking --pin 90 from the socket 102 in the turret 110. There are six of these sockets, and the cam-block and cam-disk 33 are relatively arranged so that the locking-pin is depressedjust before the revolving mechanism goes into action and that as soon as the turret has made one-sixth of a revolution the pin will be released and the spring 94 will again force it into locked engagement with the turret.

The turret 110, Figs. 4 and 6, has its upper face dished, and a central hole 111 through the turret permits the chips and oil to dropV through to a pan placed under the bed of the machine. Six bearings 112 are secured to projections on tile inclined face of the turret equidistant from the turret-'center and from each other. In the center of each of these bearings the n'ut-mandrels 113 are mounted.

To the lower end of each of these mandrels is fastened the clutch 114, and the upper ends of the mandrels project above the bearings 112 and are provided with a thread 115, adapted to fit the nuts fed to the machine. Vertical movement of these spindles is prevented by the collars 116, fixed thereon and rotating in a suitable recess in the bearings 112. The teeth of the clutches 114 have each a square face and an inclined face, the object of which will be explained hereinafter.

A bracket projects from the front side of the bed, and upon this bracket the upright 121 is mounted. At the upper end of this upright the feed-tube 122 is mounted and into which the nuts 119 to be finished are fed.

IThis feed-tube has a chamber 123, Fig. 10, at

its base, and in this chamber the plunger 124 is adapted to reciprocate Iandpush the nuts from the bottom'of the feed-pipe onto the finger 125, carried on the end of a rocking shaft 126, journaled in a bearing 127, projected from the side of the upright. An offset 128 on one side of the finger carries a flat spring 129, adapted to clamp the nut when pushed on the end of the finger by the plunger and resist the force of gravitation when the nut is swung to the position designated by dotted lines. Upon the opposite end of' the shaft 127'an arm 130 is fixed, and to this arm the rod 131 is pivoted. The rod 131 is also piv. oted to one arm of the bell-crank .132, which is fulcrumed at y13310 the side of the upright 121. The other arm of this crank hasa Wristpin 134 fixed therein, and upon this wrist-pin the roller 135 is mounted. The roller 135 con-v tacts with the side of the cam 45 on the shaft 42 and is held in con-tact therewith by the action of the spring 136, one end ofwhich is fixed to the crank 132 and the opposite end is fixed to the upright. The position of the finger (shown by dotted lines in Fig. 10);is directly over the hexagonal aperture 166 of the Wrench 160, the action of which will presently be described. The plunger 124 reciprocates in a suitable aperture in the side of the upright 121 and has a head 138, to which the arm 139 is pivoted. The arm 139 is fixed on the upper end of a shaft 140, mounted in a bearing 141, projected from the rear of the upright. (See Figs. 1 and 2.) Another arm 142 is fixed on the lower end ot this shaft, and its free end has a pin fixed therein, upon which the roller 143 is mounted. This roller contacts with the inner side of the cam 47 and is held in contact therewith by the action of the spring 144.

The double wrench '160 is carried by a post 161, to the upper end of which it is secured. The post is adapted to slide vertically in suitable bearings 162, formed on the left side of,

the upright. The wrench consists (see Figs. 12 and 13) of a substantially T-Shaped arm which has two projections, through which hexagonal apertures 166 are cut. The wrench is positioned so that the aperture 166 is directly under the finger 125 when in its vertical position and directly over one of the spindles 113, carried by the turret 110. The upper edges of this aperture 166 are chamfered, and the lower edges of the aperture 165 are also chamfered, the object being to facilitate the entrance of the nut into the aperture. The centers of the apertures 165 and 166 are provided with latches 168 and 169. The latches are normally held outward in the po- IOO IIO

sition shown in Figs. 14 and 15 by the action camshaft 42 and carries a roller 175, contacting with the eccentric periphery of the cam 45, by the rotation of which it is actuated.

Directly below the apertures 165 and 166 of the wrench and under the turret a housing 180 is fixed to the under side of the bed 1 of the machine, and this housing carries three parallel uprights which project a short distance above the bed. (See Figs. 4, 16, and 17.) In the central upright a post 182 is slidably mounted, and this post 182 carries at its upper end the yoke 183, which extends over the other nprights. The yoke has vertical apertures near its ends, and in these apertures the spindles 184 and 185 are loosely mounted. Clutch members 186 186 are fixed upon the upper ends of these spindles and are mates of the clutch members 114, carried by the turret-nut mandrels 113. A space 187 equal to the depth of the clutch-teeth is normally left between the base of the clutch 185 and the yoke 183, and they are normally held in this position by the spring 188, acting directly on the bearing against the collar 189 of the spindle 184, and the adjustable spring 193, acting through the lever 190 on the collar 189 of the spindle 185. The lever 190 is pivotally mounted to the yoke 183 and has a downward-projecting arm 191, which bears against a projection of the pawl 195. Said pawl 195 is pivoted to the upright 180 and is actuated by a spring 197, which, as shown in Fig. 16, normally holds it in position under the block 194, fastened to the yoke 183. A lever 198 is pivoted to the rear of the yoke 183 and fulcrumed to a bracket 199 on the bed 1. The free end of the lever 198 is provided with a roller 200, contacting with the under side of the cam 44 on shaft 42.

In the two outside uprights of the housing 180 the screwing spindle 210 and unscrewing spindle 211 are rotatably mounted, Figs. 4 and 6. Each of these spindles 210 and 211 have in their upper ends an axial hole in which the spindles 184 and 185 are keyed and free to move up and down in said holes while being rotated by the spindles 210 and 211. Spui'- gears 212 and 213 are fixed upon the lower ends of the screwing and unserewing spindles 210 and 211, respectively, and mesh together, turning the screwing spindle to the right and the unscrewing spindle to the left. A bevelgear 214 is fixed upon the end of the spindle 211, just below the spur-gear 213, and this bevel-gear meshes with a second bevel-gear 215 on the shaft 58, already described. These gears and spindles are run continuously at a uniform speed while the machine is running; but the great part of the time the clutches are out of mesh and the gears running idle.

The action of this device is as follows: rlhe elements of the machine being in the position shown, all the turret-spindles carrying nuts and the carriage being in its lowest position and all the milling-cutters being at work on the side faces of the nuts, the finger 125 is in the horizontal position ready to receive a nut.

The plunger 124 advances and pushes a nut on the finger 125, which then swings down to a vertical position. The Wrench 160 is then raised, the walls of the aperture 166 passing up on the nut held on the finger. The latch 169, mounted in this aperture, has its upper face beveled, so that it retreats as the wrench moves upward over the nut, and when the wrench has reached its maximum elevation the latch springs outward over the top edge of the nut on the iinger. The Wrench then descends, stripping the nut from the finger and transferring it to the nut-mandrel 113 directly under the aperture 166. As the Wrench descends the walls of the aperture 165 of the wrench pass over a finished nut on the mandrel 113 directly under said aperture. The latch 168 in the aperture 165 has its lower edge beveled, so that it will retreat while the wrench descends and springs to position under the nut on the mandrel when the wrench has reached its lowest position. While the wrench is descending, carrying a nut with it, the action of the lever 198 raises the yoke 183 until the pawl 195 engages the under side of the block 194 on the yoke 183. The spindle 185 continuously revolves to the right, while the spindle 184 continuously revolves to the left. When the yoke 183 is raised, the clutches 186 186 are thrown into engagement with the clutch members 114 11.4 of the mandrels directly under the apertures of the wrench. The inclined faces of the clutch members on the spindle 185 are held in frictional contact, rotating the mandrel above them and screwing on the nut held in the wrench-aperture 166. At the same time the clutch members on the spindle 184 positively rotate the mandrel carrying the iinished nut held in the wrench-aperture 165 and unscrew it from the mandrel. When the unfinished nut has been screwed home on the mandrel 113, the friction on the inclined faces of the clutch members below it increases until the power of the spring 193 to resist it is overcome, when the lever 190 will be forced down and the pawl195 thrown out ot contact with the block 194. The frictionof the inclined faces of the clutch members may be increased or decreased by means of the adjustment of the spring 193, whereby the nut may be screwed on the mandrel more or less tightly, as desired. While the nuts are being screwed on and off the two mandrels in front of the spindle-carriage 32 the nuts on the four remaining mandrels under the carriage are being finished. While the nut is being screwed on the finger again swings up to its horizontal position to receive a new nut. While the wrench is ascending to receive a new nut the intermittent rotation IOO of the turret takes place, the spindle-carriage both parts.

. It is to be understood that the mechanism by which the various operations carried out by this machine are performed may be widely varied in construction and arrangement. Other constructions may be substituted for some of those now employed, and the relative movement of some of the parts with respect to others may be effected not only by moving the parts described in the machine, but by moving the other parts or by moving It will also be understood that some of the mechanism may be used in structures in which other parts of the mechanism are not employed and that the independent use of such mechanism is contemplated. The

invention is not, therefore, to be restricted to the particular mechanism or the precise details of construction herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a nut-finishing machine, the combination of an intermittently-rotatable turret, a series of nut-holding screw-mandrels mounted therein with their axes parallel to the axis of the turret, mechanism for automatically intermittently advancing the turret, tools for milling the sides of the nuts whileA on the mandrels, and mechanism for automatically operating and movingthe tools cooperatively with the movements of the turret, and means for automatically delivering the fed nuts to the mandrels, screwing them thereon and unscrewing them therefrom when finished.

2. In a nut-finishing machine, the combination of an intermittently-rotatable turret, a series of nut-holding screw-mandrels mounted therein with their axes parallel with that of the turret, a carriage carrying a series of milling-tools whose axes are perpendicular to the axes of the mandrels, means for automatically screwing nuts on and unscrewing them from the mandrels, and mechanism for in proper time rotating the turret, shifting the carriage, and operating the tools.

3. In aunt-finishing machine, the combination of an intermittenfly-rotatable turret carrying a series of nut-holding screw-mandrels and a carriage `carrying a series of millingtools, said carriage having an orbital motion with variable speed, substantially as de scribed.

4. Inanut-finishing machine, the combination of an intermittently-rotatable turret carrying a series of nut-holding screw-mandrels whose axes are parallel with the axis of the turret, means for milling the sides of nuts carried on said mandrels, and means for automatically screwing said nuts on and off said mandrels, substantially as described.

5. In anut-nishing machine, the combination of an intermittently-rotatable turret carrying a 'series of nut-holding mandrels parallel to the axis of said turret, means for milling the sides of the nuts carried on said mandrels, and means for automatically placing said nuts on said mandrels and removing them therefrom, substantially as described.

6. In a nut-finishing machine, the combination of an intermittently-rotatable horizontal turret carrying a series of vertical nut-holding mandrels, and a carriage carrying a series ot' horizontal,milling-spindles for milling the sides of the nuts carried on said mandrels and means for automatically placing said nuts on said mandrels and removing them therefrom, substantially as described.

7. In aunt-finishing machine, the combina` tion of an intermittently-rotatable horizontal turret carrying a series of vertical lnut-holding screw-mandrels, and a carriage carrying a series of horizontal milling-tools for milling the sides of nut-sscrewed on said mandrels, said carriage having an orbital motion with variable speed, substantially as described.

8. In aunt-finishing machine, the combination of an intermittently-rotatable horizontal turret carrying a series of vertical nut-holding screw-mandrels, a carriage carrying a series of horizontal milling-tools, said carriage having an orbital motion with variable speed, and means for automatically screwing nuts on and off said mandrels, substantially as described.

9. In a nut-finishingv machine, ahorizontal intermittently-rotatable turret having a central aperture and an upper face inclined thereto, a series of nut-holding screw-mandrels mounted in the'turret, means for screwing nuts onto and 0E of said mandrels, milling-tools for finishing the sides of the `nuts While on the mandrels, and means for automatically rotating the turret and operating and controlling the milling-tools.

10. In a nut-finishing machine, the combination of a turret carrying a series of nuts and a frame carrying a series of revolving tools for milling the sides of saidnuts, said frame having an orbital motion with variable speed, substantially as described.

ll. In a nut-finishing machine, the combination of a turret carrying a series of nuts and a frame carrying a series of revolving tools for milling the sides of said nuts, said frame having an orbital motion, substantially as described.

12. In a nut-iinishing machine, the combination of a turret carrying a series of nuts and a frame carrying a series of revolving tools for milling the sides of said nuts, the axes of said tools being perpendicular to the axes of said nuts, said frame having au or bital motion, substantially as described.

13. In a nut-finishing machine, the combination of a turret carrying a series of nuts and a frame carrying a series of revolving tools for milling the sides of said nuts, the axes of said tools being perpendicular to the ICO IIO

axes of said nuts, said frame having an orbital motion with variable speeds, substantially as described.

14. In a nut-finishing machine, the combination of a turret carryinga series of nuts, a frame carrying a series of revolving tools, said frame having an orbital motion with variable speeds, and means for automatically placing said nuts on said turret and removing them therefrom, substantially as described.

l5. In a nut-finishing machine, the combination of a turret carrying a series of nuts, a frame carrying a series of revolving tools, said frame having an orbital motion, and means for automatically placing nuts on said turret and removing them therefrom, substantially as described.

16. In a nut-finishing machine, the combination of a turret carrying a series of nutholding screW-mandrels, and means for automatically screwing nuts on and off said mandrels, substantially as described.

17. In a nut-finishing machine, the combination of a turret carrying a series of nutholding screw-mandrels, each of said mandrels having a male clutch member, afernale clutch member, and means for engagingsaid male and female clutch members, whereby nuts may be automatically screwed on and off said mandrels, substantially as described.

18. The combination of a nutholding screw-mandrel, said mandrel having a male clutch member fixed thereto, said male clutch memberhaving teeth with inclined faces, and a female clutch member having corresponding teeth, and means for locking said clutch members and holding them together yieldingly while the nut is being screwed on, substantially as described.

19. The combination of a nut-holding mandrel, said mandrel having a male clutch member fixed thereto, said male clutch member having teeth with inclined faces, and a female clutch member having corresponding teeth, and adjustable means for locking said clutch members and holding them together yieldingly While the nut is being screwed on, substantially as described.

20. The combination of a turret carrying a series of nut-holding mandrels, means for revolving said mandrels and a wrench for holding said nuts while being screwed on or ofi said mandrels, substantially as described.

2l. The combination of a turret carrying a series of nut-holding mandrels, means for revolving said mandrels, and a Wrench having two apertures to it and hold nuts while being screwed on and oii said mandrels, substantially as described.

22. In a nut-finishing machine, an intermittently-rotatable turret, a series of nutholding rotatable screw-mandrels, a chute or passage through which nuts are fed to the machine, means for receiving the nuts and presenting them successively to the several spindles, means for rotating the spindles to screw the nuts thereon, milling-tools for iinishing the nuts, means for removing the nuts from the spindles, and mechanism for automatically operating the several parts of the machine.

Signed by me this 29th day of September, 1899.

OLUF TYBERG.

Witnesses U. WAI-ILsTRoM, M. I. GIEL.

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