US1792051A

US1792051A - Apparatus for sizing bushings

Info

Publication number: US1792051A
Application number: US288066A
Authority: US
Inventors: Albert H Valentine
Original assignee: MORAINE PRODUCTS Co
Current assignee: MORAINE PRODUCTS Co
Priority date: 1928-06-25
Filing date: 1928-06-25
Publication date: 1931-02-10
Anticipated expiration: 1948-02-10

Description

Feb. 10, 1931. I A. H. VALENTINE APPARATUS FOR SIZING BUSHINGS Filed June 25.

1928 4 Sheets-Sheet 1 m 0 w W m 5 W Feb. 10, 1931. A. H. VALENTINE APPARATUS FOR SIZING BUSHING'S Filed June 25,

1928 4 Sheets-Sheet 2 Feb. 10, 1931.

A. H. VALENTINE 1,792,051

APPARATUS FOR SIZtNG BUSHINGS Filed June 25. 1928 4 Sheets-Sheet 3 Feb. 10, 1931. A. H. VALENTINE APPARATUS FOR SIZIN BUSHINGS 4 Sheets-Sheet 4 Filed June 25 1928 M3 .4 fie4wmwfi hszzz 22 z J an m %8 n flaw: J4. muzwm Patented Feb. 1931 UNITED STATES PATENT OFFICE ALBERT H. VALENTINE, OF DAYTON, OHIO, ASSIGNOR TO MORAINE PRODUCTS COM- PANY, OF DAYTON, OHIO, A CORPORATION OF OHIO APPARATUS FOR SIZING BUSHINGS Application filed June 25,

This invention relates to surfacing and sizing bushings to a desired predetermined size, and primarily to an apparatus for surfacing and sizing bearing or .guide bushings formed of porous metallic b material in which a be absorbed.

A process for making bushings of this character is fully described in the patent to H. M. 10 Williams and A. L. vBoegehold N 0. 1,642,347.

his process includes the step of heat treating the bushings and it has been found that the bushings distort slightly or change their dimensions to some extent during this heat treatment. Therefore it becomes necessary that the bushings be sized to the exact desired dimensions subsequent to the step of heat treating. It is also desirable to form a smooth inner surface on the bushing during 2 the sizing operation without burnishing this surface. The burnishing of the bearing surface would reduce the porosity of said surface, impeding'the flow of oil to said surface and reducing the efficiency of the bearing. Various forms of apparatus have been heretofore devised for sizing and surfacing bushings of this character, but in allof these devices the bushings to be operated upon are placed one at a time in a sizing and surfacing die associated with a punch press by the operators of the machine. The press is then operated to bring a suitable tool into engagement with the bushing to effect the SIZ- ing and surfacing thereof and the bushing is ejected from the die. It requires appreciable time and care to manually place the bushings in a sizing die as described and former sizing devices which require repeated manual loading of the die are necessarily uneconomical and slow.

It is therefore the primary object of the present invention to provide a novel and imquantity of lubricant may proved apparatus for automatically sizing.

and surfacing bushings to a desired predetermined size requiring a' minimum of atten tion on the part of the operator.

It is a more specific object of the invent on to provide a device for automatlcally SlZlIlg and surfacing bushings and for simultanean apparatus for.

1928. Serial No. 288,066.

ously stamping any desired indicating marks on the surface of said bushings.

It is a still further object of the invention provide a device for sizing and surfacing ushings provided with a plurality of means for effecting the sizing and surfacing operations, means for automatically. carrying a single bushing to different positions to be 019- erated'on successively by said plurality of means and for carrying a plurality of bushings into position to be operated on by said sizing and surfacing means simultaneously. These objects are accomplished according to the present invention by the provision of means for feeding the bushings one at a time from a suitable container to a rotatable carrier plate provided With a series of recesses for receiving the bushlngs and which is opera-ted step by step to carry the bushings under a plurality of tools which are carried by the vertically reciprocating cross head of a conventional punch press. Means are provided to hold the carrier plate stationary as the cross head descends, with the bushings thereon accurately positioned under the sizing and surfacing tools. The cross head carries a cam for operating the stamping mechanism, a rotating brush for cleaning the inner surface of the bushings, a shaping tool which cooperates with a die in theoperating table of the punch press to shape the ends of the bushing, and a mandrel for forcing the bushipg through a suitable die to squeeze the bushing to the desired size and smooth the surfaces thereof. Each bushing is positioned by the carrier plate, first in position to be operated on by the brush, then by the shaping tool and finally by the mandrel and on any operation of the cross head a plurality of bushings are supported on the carrier plate in position to be operated on bythe various operating means which perform different operations on each bushing.

Further objects and advantages of the present invention will be apparent from the following description, reference beinghad to the accompanying. drawings, wherein a preferred embodiment of one form of the present invention is clearly shown.

' hold the member In the drawings:

Fig. 1 is a side elevation of a preferred form of the present invention showing a part of the associated punch press.

Fig. 2 is a front elevation.

Fig. 3 is a horizontal section on the line 3-3 of Fig. 2.

Fig. 4 is a fragmentary vertical section on the line 4-4 of Fig. 3.

Fig. 5 is a fragmentary vertical section onthe line 5-5 of Fig. 3.

'Fig. 6 is a vertical section on the line 66 of Fig. 3.

Fig. 7 is a fragmentary plan view showing the rotating means for the die plate in a different position from that shown in Fig.

Fig. 8 is a fragmentary detail vertical section through the sizing and shaping tool.

Fig. 9 is a fragmentary vertical section on the line 9-9 of Fig. 3, showing the various tools in operative position.

Referring to the drawings and more particularly to Figs. 1, 2 and 5 the reference numeral 20 indicates the table of a punch press, secured in any desirable manner to a base 22 supported on standards (not shown) which extend upwardly from a suitable floor. At the center of the table 20 is a flanged member 24. This member forms a stub shaft on which the above mentioned carrier plate is journalled and is provided with a flange 26 seated in a recess in the lower face of the table 20 and secured thereto by bolts 28 as indicated in Fig. 5.

The member 24 projects through the table 20, a part of said member extending above the table and being formed in three integral parts of different diameters, these parts being indicated by the

numbers

30, 32 and 34 in Fig. 5. The part 30 which is of larger diameter than the other two parts constitutes the stub shaft on which is journalled a flanged bushing 36 which is clamped to a-rotating carrier plate 38, in a manner hereinafter described, so as to rotate therewith. To clamp the plate and bushing together in the manner described, an annular member 40 is journalled immediately above the said plate on the part 32' of member 24. The under side of the annular member which engages the plate 38 is provided with a facing 42 of asbestos or other suitable material to prevent slipping of the member 40 relative to the plate, said facing being secured to the member 40 by bolts 44 countersunk in the facing. The upper end 34 of the member 24 constitutes a threaded stem as indicated, in Fig. 5, on which is fitted loosely a concavo-convex steel disc 46 with its convex side up. A nut 48 is adjustable on the stem 34 to tighten the concavo'convex disc against the upper face of the member 40 and alock nut 50 holds the nut 48 inadjusted position. When adjusted as described the steel disc, because of its elasticity, Wlll 40 against the plate 38 and the flange of bushing 36 clamped tightly between the said member and plate so that the plate 38, member 40 and bushing 36 rotate as one assembly on the stub shaft 30.

The bushing is lubricated by means of an angular oil passage 52, bored in the member 24 and commumcating at its lower end with an oil channel 54 cut in the outer surface of the stub shaft 30. At its. upper end the oil passage 56 screwed into the end of stem 34, and an oil or grease cup (not shown) may be screwed into said coupling member.

Means are provided for rotating the carrier plate 38 step by step as the punch press is operated, said means being best shown in Figs. 1, 2. 3 and 7 This means comprises a. horizontally reciprocating bar 58, of rectangular cross section, which slides in a correspondingly shaped channel 60 in the upper face of the table 20, said bar being held in its groove by retaining plates 62, bolted to the top of the table 20 and projecting above the bar 58 as indicated in Fig. 7.

Pivotally mounted on the top of bar 58 by a machine screw 64 is a dog 66 adapted to engage in any one of a series of notches 68 formed in the periphery of the carrier plate 38. This dog operates to move the plate through one step of movement as the rod 58 is moved rearwardly in Fig. 3 in a manner hereinafter set forth. This dog is yieldingly held in engagement with the periphery of the carrier plate by means of a spring pressed plunger 70. slidably mounted in a housing 72 bolted to the top face of rod 58; a spring 74 received between the enlarged head 7 6 of the plunger and the housing wall holding the dog in engagement with the plate 38.

The rod 58 is reciprocated by means of the punch press and to this end a link 78 is pivotally connected at its forward end to a lug 80 projecting upwardly from the upper face of the rod 58, by a pivot pin 82 secured in said lug by a set screw 84. At its rear end the link 78 is pivotally connected to one arm of a bell crank lever 85 fulcrumed on a bolt 86 secured in a standard 88 projecting up wardly from the punch press table 20. The other arm of the bell crank lever 84 is pivotally connected to one end of a turn buckle, indicated in its entirety by the reference number 90 and reciprocated by the punch press to rock the lever 85 on its fulcrum, the degree of movement of said lever being adj ustablc by adjustment of the turn buckle. At its upper end the turn buckle is connected in any desirable manner to a member 92 having a slot 94 therein which embraces and is guided by a collar 96, keyed orotherwise secured on a shaft 98 which is rotated on operation of the punch press. The collar 96 is providcd with a flange and the member 92 reciprocates, when shaft 98 is rotated between said 52 connects with a coupling member P flange and a cam 102 fixed on shaft. This cam is engaged by two

rollers

104 and 106 rotatably mounted on

bolts

108 and 110 respectively secured in member 92, and as shaft 98 rotates the cam reciprocates the turn buckle, rocking the lever 85 on its pivot and reciprocating the rod 58 to rotate plate 38.

The plate is normally held stationary, in such a position that the bushings carried by said plate are in position to be operated on by the various sizing and surfacing tools, by several devices one of which is a dog 112 pivoted on a bolt 114 secured in the table 20.

The dog is normally held in such position that the toe 116 thereof engages a notch 68 in the periphery of the plate 38, by a spring pressed plunger 118 similar to the plunger 70, and supported in a housing 120 bolted to the top of table 20 and similarin construction to the housing 72. The toe of the dog is disengaged from the notch 68 by means of the lug on the reciprocating bar 58 which engages the tail 122 of the dog which lies in the path of the lug when'toe 116 engages a notch 68. As the reciprocating bar 58 is moved forwardly or to the right in F1g. 1, the dog 66 is moved from the position shown in Fig. 3 to that shown in Fig. 7 In this position dog 66 engages a notch 68 as indicated in Fig. 7, and the lug 80 engages the tail 122 of dog 112 to swing the toe of said dog to its ineffective position. As the bar 58 is moved rearwardly, or to the left in Fig. 1, the dog 66 moves the plate 38 through one step of movement and the lug 80 passes out of engagement with the tail 122 of dog 112, permitting the toe 116 to move into engagement with a notch 68, the parts occupying the position shown in Fig. 7, at the end of the rearward movement of the bar 58.

The carrier plate has fitted therein a plurality of flanged plugs 124 arranged circumferentially and provided with recesses 126 in which the bushings to be sized are seated. The bushings are automatically seated in said recesses as the latter are successively brought beneath a device for feeding the bushings thereto. This device comprises a hopper in the form of a tube 128 of greater diameter than the bushings to allow the latter to pass freely therethrough. This tube is arranged at an angle of about 45 and is supported in a standard 130 bolted to the top of the table 20 and extending upwardly therefrom. The standard 130 is formed in two

parts

132 and 134 at its upper end where the tube 128 extends through said standard. These parts are normally slightly separated as indicated in Fig. 3, but may be drawn together byv tightening the screw 136 to clamp the tube 128 in position.

The lower end of the angularly arranged tube 128 is positioned immediately above a vertically arranged tubular member 138 which is received in a bore 140 in a block 142 bolted to the top of the table 20 adjacent the o a I to retain said member in place.

Bushings are fed from the tube 128 into the tubular member 138 one at a time by action of gravity, the feeding of said bushings being controlled by a tripping device which is operated on every operation of the punch press to release one bushing from tube 128. This tripping device comprises a pin 150, supported at its ends in notched bar 152, the pin extending across the notch as shown in Fig. 1. The bar 152 is supported on two pins 154 freely slidable in suitable holes formed in the block 142, and is normally held in the. position shown in Fig. 2 by two springs 156 which surround the rods 154 between the bar 152 and top of block 142. When the parts are in the position shown in Fig. 2, the pin 150 engages the underside of the lowermost bushing in tube 128, holding said bushing against the upper surface of the tube and preventing any of the bushings dropping from said tube into the member 138 as long as the parts remain in that position. The tube 128 is cut away at 158 to permit the pin 150 to be moved into engagement with the bushing as described. The pin 150 and its supporting bar are moved downwardly on each operation of the punch press by means of a pair of rods 160 carried by a plate 162 secured to the reciprocating cross head 164 of the punch press in a manner later set forth. The rods 160 are threaded and each is screwed into the plate 162, a lock nut 166 being provided on each rod to hold said rod in any desired position. The rods 160 engage bar 152 as the cross head descends, moving the pin 150 downwardly and permitting a bushing to drop from tube 128 into the member Adjustably mounted in an arm 168 projecting forwardly from the cross head 164 and coaxial with the tubular member 138 is a mandrel 170 having a reduced and tapered lower end 172. Lock nuts 174 are threaded on the mandrel on both sides of the arm 168 to hold the mandrel in any position to which it may be adjusted. The plate 162 carryin the rods 160 previously described is clampe between the upper lock nut and the arm 168.

WVhenever the rotating plate 38 is stationary, one of the series of plugs 124 is in a position where the recess 126 therein is immediately beneath the tubular member 138, so that as the plate 38 is rotated one bushing will drop from the member 138 into a recess 126 every time the plate 38 coines to rest. When the operator starts the machine into operation, he first fills both the tube 128 and the tubular member 138 with bushings, then as a machine is operated and a bushing drops from the member 138 into a recess 126, an-

this manner to other bushing is fed from tube 128 into the member 138 to take its place. It will be clear therefore that there are always several bushings within the member 138 as indicated in Fig. 4 during operation of the machine. On downward movement of the cross head 164 the mandrel 170 enters the bushings in the member 138 before the rods 160 engage bar 152'to release a bushing from the tube 128, the operation of the parts being timed in revent the possibility of a bushing being ed from tube 128 into the path of the descending mandrel. On operation of the bar 152 the lowermost bushing in tube 128 moves from the position shown in Fig. 2 to that shown in Fig. 4, and on return of the mandrel to its upper position such bushing drops into the member 138 as one of the bushings therein drops into a recess 126.

The purpose of the mandrel 170 is to provide an adequate support for the inner surface of the bushings during the operation of a stamping device to stamp a trademark or other indicating mark on the outer surface of said bushings as they are positioned within the member 138. The stamping device is best shown in Figs. 3 and 6, and comprises a hollow plunger 174 slidably mounted in a tubular guide member 17 6 which is provided with a flange 178 secured by bolts 180 to the block 142. The plunger, at its rear end. is provided with a flange 179, and received between the flange and the end of the guide 176 is a helical spring 182 normally holding the plunger in its rearmost and ineffective position. A stamping die provided with an enlarged head 184 and a reduced shank portion186 is secured to the forward end of the plunger 174, the said shank portion 186 being received in a recess 188 in the end of the plunger, and secured in position by a pin 190 or other suitable means. The position normally occupied by the plunger 174 is determined by a pin 192 secured to said plunger and engaglng the rear end of a slot 194 in the member 176, through which said pin projects.

On downward movement of the cross head 164 the stamping die is moved forward into engagement with the outer surface of one of the bushings through which the mandrel 17 0 projects, by means of a cam 195 formed on an angular bar 196 bolted to the cross head and projecting downwardly therefrom. The cam engages a wear preventing ball 198 loosely received in a recess formed in the enlarged head 200 of a pin 202 screwed into the rear end of plunger 174, and held in any desired position of adjustment by a lock nut 204. On upward movement of the cross head the cam is withdrawn and the stamping die is moved by spring 182 to its ineffective position.

After'a bushing is seated in one of the recesses 126 in the manner described, the plate 38 is rotated step-by-step to bring the bushing into position to be operated on by a plurality of different sizing and surfacing tools successively. The first one. of these tools which operates on the bushing is a motor driven brush 206 which is brought into engagement with the inner surface of the bushing on each operation of the cross head. This brush is secured to the armature shaft 208 of a suitable electric motor 210 provided with a base plate 212 bolted to the forwardly extending part of an angular plate 214. This plate is provided with a laterally extending portion which is secured by bolts 216 to the front of the cross head 164. On downward movement of the cross head the rapidly rotating brush is projected into that bushing immediately below it and thoroughly cleans the. inner surface of the bushing.

The brush is guided in its downward movement so that the brush will be in perfect alignment with the bushing to be cleaned, by means of a guide bushing 218 fixed in a bar 220 hinged at 222 to a lug 224, secured by screws to the top of table 20. The bar 220 projects over the rotating plate 38 and normally is held at a slight angle to said plate by means of a compression spring 226. This spring surrounds a collar 228 which lies between the bar 220 and table 20 and limits the downward movement of the bar 220.

The collar surrounds a pin 230 which projects upwardly from table 20 through a hole in bar 220 and is provided with lock nuts 232 to limit the upward movement and determine the normal position of bar 220. The bar 220 is lowered slightly on descent of the cross head, to bring the bushing 218 into exact register with one of the bushings carried by plate 38, by means of a rod 234 slidably received in a supporting sleeve 236 mounted in an angular bar 238 bolted to the plate 214. A helical spring 240 surrounds the rod between the sleeve 236 and an adjustable collar 242 secured in adjusted position by a screw. This spring normally forces the rod 234 downward with respect to the angular supporting bar 238, until an adjustable collar 244 on the upper end of said rod engages the bar 238. As the cross head descends the rod 234 engages the bar 220 and the spring 240 overcoming the spring 226, said rod moves the free end of bar 220 downwardly until the bar assumes a horizontal position before the brush enters the aligning bushing 218. Further downward movement of the cross head will compress the spring 240 until all the parts assume the position shown in Fig. 9.

It will be noted that the lower end of the bushing 218 is beveled as indicated at 218a and when the bar 220 is lowered. as above described, this beveled surface is brought into engagement with the upper end of the bushing which is being operated upon by, the brush 206 and holds said bushing against any possible rotation which might be caused by the rapidly rotating brush.

Subsequent to the brushing operation the carrier 38 is again rotated to bring the brushed bushing into position to be operated by a device for shaping the ends of said bushing. This device comprises a die 246 positioned in a recess in table 20 immediately below and coaxial with a cooperating shaping tool indicated in its entirety by the reference numeral 248. The die has a beveled, annular groove 250 formed in its upper face to shape the lower end of the bushing, and a central orifice 252 is provided in the die 246 to guide the reduced lower end of a mandrel forming part of the shaping tool 248. The tool 248 comprises the mandrel 254 having an enlarged, flanged head 256 which is received in a correspondingly shaped recess formed in a plate 258 bolted to the cross head, the flange lying between a shoulder 260 and the cross head and holding the mandrel fixed relative to said cross head. The mandrel has a reduced portion 262 of substantially the same size as the inner diameter of the bush- .ing which enters the bushing as the mandrel is moved downwardly and a still smaller part 264 which enters the hole 252 to secure exact alignment of the mandrel when the latter is in its operative position.

Slidably mounted on the mandrel 254 is a sleeve 266, provided with a flange 268 at its lower end, and having a slot 270 into which projects a pin 272 secured in the mandrel in any suitablemanner and cooperating with said slot to limit the movement of sleeve 266 relative to the mandrel. When the cross head 164 is in raised position the sleeve is held in its power position with the pin 272 in engagement with the upper end of slot 27 0 by means of a spring 274 which surrounds the sleeve between the flange 268 and plate 258. A guide sleeve 276 surrounds the upper end of the sleeve 266 and prevents any part of the spring getting between the end of the sleeve and the plate 258 when the sleeve is in lowered position. This guide sleeve is secured to plate 258 by a screw passing through an ear 278 projecting laterally from the sleeve as shown in Fig. 9.

The mandrel is provided with a beveled surface 280 where the

parts

254 and 262 of said mandrel join. This beveled surface cooperates with a similar beveled surface 282 at the lower inner edge of sleeve 266 to shape the upper end of a bushing, the two beveled surfaces being adjacent each other when the sleeve 266 is in raised position as shown 1n Fig. 8. On descent of the cross head 164, the sleeve 266 first engages the bushing. F urther downward movement of the cross head will compress the spring 274, causing the parts to assume the position shown in'Fig.

8, and applying sufiicient end pressure to the bushing by means of groove 250 and surfaces 280, 282 to bevel said ends. On upward movement of the cross head spring 274 expands to enable the withdrawal of the mandrel from the bushing without lifting of the bushing from recess 126.

The rotating plate 38 next brings the bushing into position to be operated on by the sizing device. The latter comprises primarily a sizing die 284 secured in the table 20 of the punch press in any desirable man'- ner and a cooperating mandrel 286, provided with an enlarged flanged head 288 received in a recess in the plate 258 and held in position in the same manner as the mandrel 256. The mandrel 286 is provided with a reduced and tapered lower end 290 which, on downwardmovement of the cross head 164 is adapted to enter the bushing seated in the re cess 126 immediately below the mandrel. The reduced end of the mandrel passes through the bushing until the shoulder 292 on said mandrel engages the upper end of the bushing, forcing the latter through the die on further downward movement of the mandrel. The die is of slightly less diameter than the outer diameter of the bushing, while the-tapered end 290 of the mandrel may be substantially the same size as the inner diameter, or slightly smaller than said inner diameter, depending on the inner diameter desired for the sized bushing. As the bushing is forced through the die it is compressed between the die and the mandrel to form the bushing in the exact size desired and to smooth the inner surfaces thereof while it is prevented from moving relative to the mandrel by the shoulder 292.

Since there is no movement between the mandrel and bushing during the compressing operation, there is no burnishing of the inner surface of the bushing, hence the porosity of said inner surface is substantially the same after sizing as before, and oil will flow readily from the bushing to the part with which itcooperates. During the compressing operation the outer diameter of the bushing is reduced, and if a mandrel having a diameter less than the inner diameter of the bushing is used, said inner diameter is also somewhat reduced. If a mandrel of substantially the same diameter as the inner diameter of the .bushing is used, the shrinkage of the bushing takes place entirely within the bushing itself, which is compressed to a somewhat greater degree than if the smaller mandrel is employed.

On the return stroke of the cross head, after the bushing hasbeen forced through the die as above set forth, the bushing, which expandsslightly as soon as its leaves the die. strikes against the under-side of the die and is removed from. the mandrel, falling into a suitable container.

A dog 294, pivoted on a bolt 296, is urged into engagement with one of the notches 68, by a spring pressed plunger 298, similar in construction to the plunger 7 0 and supported t in a housing 300, similar to the housing 72 and bolted in the same way to the table 20. This dog prevents any possibility of backward rotation of plate 38 during forward movement of bar 58. The dog is cammed out of engagement with the notch 68, on forward movement of plate 38, by each of the raised parts lying between the notches 68, so as to permit the plate to move forwardly or in a clockwise direction without interference.

The carrier plate 38 is not only held against movement by the dogs 112, but is positively locked against movement when the cross head is moved downwardly to bring the various operating tools into operating position. To this end a locking bar 302, shown best in Fig. 3, is provided. This bar is provided with one side of rectangular shape which is adapted to engage one of the notches 68 in the plate 38, while the opposite side of the bar is shaped to fit a dovetail groove 304 formed in a guide block 306 bolted to the table 20. The locking bar 302 is reciprocated Vertically by means of a rod 308 connected at its lower end in any suitable manner to the bar and at its upper end to one arm 310 of a three-armed lever pivoted at 312, and having another arm 314 carrying a roller 316, pivoted in the end thereof. This roller engages a cam 318 secured to the shaft 98 for rotation therewith so that as the shaft 98 rotates, the three-armed lever is rocked on its pivot to raise and lower the rod 308 and locking bar 302. The roller is held in engagement with the cam by means of a link 320 pivotally connected with the third arm 322 of the three-armed lever. The other end of this link is connected to a short lever or arm 324 which is operated by a spring (not shown) to urge the link 320 forwardly, or to the right in Fig. 1, to hold the roller 316 in contact with cam 318 at all times. This mechanism is a part of the conventional punch press which operates the cross head 164 and constitutes no part of the present invention; Therefore, it is deemed unnecessary to show or describe this mechanism in greater detail.

It will be clear from the above description that the operation of the machine is entirely automatic except for the loading of the tube 128 with bushings. The bushings are fed from the tube, stamped, cleaned, shaped at the ends, compressed to the exact size desired and the surfaces smoothed without further attention on the part of the operator. To effect these various operations automatically, a bushing is operated on successively by a number of differenttools having different functions, but at the sametime a plurality of bushings are operated on by these same tools simultaneously, effecting a number of different results on different bushings at one ime.

While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a carrier, means for feeding the bushings successively to the carrier, a plurality of sizing and surfacing tools located in different positions with respect to the carrier, means for operating the carrier step by step to bring the bushings into position to be operated on successively by said tools, and means for operating said tools to size and surface the bushings as desired.

2. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a carrier, means for feeding the bushings thereto, a plurality of sizing and surfacing tools, means for operating the carrier step-by-step to bring each of said bushings into position to be operated on by said tools successively, means for operating the sizing and surfacing tools and means for holding the carrier stationary while said tools are operated.

3. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a carrier adapted to support a plurality of bushings, means for feeding the bushings to said carrier, a-plurality of sizing and surfacing tools, means for operating said carrier to convey a plurality of said bushings to position to be operated on by said sizing and surfacing tools simultaneously and means for operating said tools simultaneously.

4. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a plurality of sizing and surfacing tools for performing different sizing and surfacing operations, a carrier adapted to convey a plurality of bushings into position to be operated on by said tools simultaneously, means for operating the carrier and means for operating the sizing and surfacing tools simultaneously whereby several different operations are performed on a plurality of bushings at once.

5. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a rotatable carrier plate having a circular series of recesses therein, means for positioning the bushings in said recesses, a plurality of sizing and surfacing tools arranged in'the arc of a circle corresponding to that in which said recesses are positioned, and means for rotating the carrier plate whereby each bushing. thereon is successively brought to position tobe operated on by each of said sizing and surfacing tools and aplurality of bushings are positioned to be operated'on'by all of said tools simultaneously.

6. Apparatus for sizing and surfacing bushings to a desiredpredetermined size comprising'a carrier adaptedto receive the bushings to be sized, a plurality of different sizing and surfacing tools in cooperative relation with the carrier including means for sizing a bushing to the desired interior and exterior diameter and means for shaping the ends thereof, means for operating the carrier to ing the interior and exterior surfaces of the bushing and for shaping the ends thereof, means for operating the carrier to bring a bushing successively into position to be operated on by said different tools and means for operating said tools.

8. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a carrier adapted to support a plurality of the bushings to be sized, a plurality of different sizing and surfacing tools in cooperative relation With the carrier including means for sizing the interior and exterior surfaces of the bushing and for shaping its ends, means for operating the carrier to bring any bushing thereon successively into position to be operated onby said different tools and a plurality of the bushings into position to be operated on by all of said tools simultaneously and means for operating the tools simultaneously.

9. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a carrier adapted to receive the bush ings to be sized, a plurality of sizing and surfacing tools in cooperative relation with the carrier, means for operating the carrier to bring a bushing thereon into position to be operated on by said tools, a brush adapted to be brought into engagement with the bushings to clean the surface thereof, and means for operating the sizing and surfacing'tools and said brush.

10. Apparatus for sizing and surfacing bushings to a desired predetermined size comprising a carrier adapted to receive the bushings to be sized, means for feeding the bushings to said carrier, a plurality of sizing and surfacing tools in cooperative relation with the carrier, means for operating the carrier to bring a bushing thereon successively into position to be opcrated'on by the various sizing and surfacing tools, a brush adapted "to be brought into engagement with the bushings to clean the surface thereof andvso located with respect to the means for feeding the bushings and the tools that the bushing is brought into position to be operated on by the brush before it can be operated on by said tools, and means for operating the tools and said brush.

11. Apparatus for sizing and surfacing bushings to a desired predetermined size, comprising a carrier, means for feeding the bushings successively to the carrier, sizing means for simultaneously forming the interior and exterior surface of the bushings to the exact size desired, means for chamfering the ends of the bushings, means for operating the carrier to bring the bushings intoposition to be operated on successively by said sizing and chamfering means, and means for operating the sizing and chamfering means.

12. Apparatus for sizing and surfacing bushings to a desired predetermined size, comprising a carrier, means for feeding the bushings successively to the carrier, sizing means for simultaneously forming the interior and exterior surface of the bushings to the exact size desired, and means for chamfering. the ends of the bushings located in different positions with respect to the carrier, means for operating the carrier step by step to bring each of said bushings into position to be operated on by said sizing means and chamfering means successively, means for operating the sizing means and chamfering means and means for holding the carrier stationary while the sizing and chamfering means are operated.

13. Apparatus for sizing and surfacing bushings to a desired predetermined size, comprising a carrier adapted'to support a plurality of bushings, means for feeding the bushings to the carrier, sizing means for simultaneously forming the interior and exterior surface of the bushings to the exact size desired, means for chamfering the ends of the bushings, means for operating said carrier to bring a plurality of bushings to position' to be operated 011 by said sizing means andsaid chamfering means simultaneously and means for operating the sizing and chamfering means simultaneously.

14. Apparatus for sizing and surfacing bushings to adesired predetermined size, comprising a carrier, means for feeding the bushings successively to the carrier, sizing means comprising, a stationary die and cooperating mandrel for sizing the exterior and interior surfaces of the bushings, means for operating the carrier to bring the bushings to a position in line with said die, means for operating the mandrel to force a bushing throughthe die, and means for holding the gushing stationary with respect to the manrel.

15. Apparatus for sizing and surfacing bushings to a desired predetermined .size, comprising a carrier, means for feeding the bushings successively to the carrier, sizing means comprising a stationary die and cooperating mandrel for sizing the exterior and interior surfaces of the bushings, means for operating the carrier to bring the bushings to a position in line With said die, means for operating the mandrel to force a bushing through the die, means for holding the bushing stationary with respect to the mandrel, and means for holding the carrier stationary during the operation of the mandrel.

16. Apparatus of the character described, comprising a container adapted to be filled with bushings, a plurality of tools for sizing, surfacing and shaping the bushings, a carrier adapted to convey the bushings to positions to be operated on by the various tools suecessively, and means for automatically feeding the bushings from the container to said carrier one at a time.

17. Apparatus of the character described, comprising a container adapted to be filled with bushings, a plurality of tools for sizing, surfacing and shaping the bushings, a carrier adapted to convey the bushings to positions to be operated on by the various tools successively, means for operating the carrier step by step, means for automatically feeding the bushings from the container to said carrier one at a time, and means for preventing the feeding of the bushings from the container While the carrier is in motion.

18. Apparatus of the character described, comprising a container adapted to be filled with bushings, a plurality of tools for sizing, surfacing and shaping the bushings, a carrier adapted to convey the bushings to positions to be operated on by the yarious tools successively, means for operating the carrier step by step, means for automatically feeding the bushings from the container to said carrier one at a time, means for preventing the feeding of the bushings from the container when the carrier is in motlon and means for releasing the bushings when the carrier is stationary.

19. Apparatus of the character described, comprising a container adapted to be filled with bushings, a plurality of tools for sizing, surfacing and shaping the bushings, a carrier adapted to convey the bushings to positions to be operated on by the various tools successively, means for operating the carrier step by step, means for automatically feeding the bushings from the container to saidcarrier one at'a time, means for preventing the feeding of the bushings from the container when the carrier is in motion, and means for simultaneously releasing a bushing and operating the various tools when the carrier is stationary. H

20. Apparatus of the character described, comprising a container adapted to be filled with bushings, a plurality of tools for sizing, surfacing and shaping the bushings, a carrier adapted to convey the bushings to positions to be operated on by the various tools successively, means for automatically feeding the bushings from said carrier one at a time, means for accurately aligning the bushings with recesses in the carrier as they are fed thereto, and means for preventing the release of a bushing from the container during operation of said aligning means.

21. Apparatus for sizing and surfacing bushings to a desired predetermined size,

comprising a carrier, means for feeding the bushings successively 'to the carrier, sizing means for simultaneously forming the interior and exterior surface of the bushings to the exact size desired, means for chamfering the ends of the bushings, and means for operating the carrier to bring a bushing first into position to be operated on by the chamfering means and then into position to be operated on by the sizing means.

22. Apparatus for sizing and surfacing bushings to a desired predetermined size, comprising a carrier, means for feeding the bushings successively to the carrier, sizing means for simultaneously forming the interior and exterior surface of the bushings to the exact size desired, means for chamfering the ends of the bushings, a brush for clean 100 ing a'surface of the bushings, and means for operating the carrier to bring a bushing into posltion to be operated on by the brush, the chamfering means and the sizing means in order.

23. Apparatus of the character described, comprising a carrier, means for feeding bushings to said carrier successively, a plurality of sizing and surfacing tools for operating on said bushings, including a brush for 110 cleaning a surface thereof, means for guidng the brush, means for moving said guidng means into exact registry with the bushing to be operated on by said brush before the brush is moved into position to engage 11 the bushing, and means for operating the carrier to bring the bushings into position to be operated on by the several tools.

In testimony whereof I hereto afiix my signature.

ALBERT H. VALENTINE.