US2288944A

US2288944A - Cleaning device

Info

Publication number: US2288944A
Application number: US260749A
Authority: US
Inventors: Gerald S Fuller
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-03-09
Filing date: 1939-03-09
Publication date: 1942-07-07
Anticipated expiration: 1959-07-07

Description

July 7, 1942- G. s. FULLER 2,288,944

CLEANING DEVICE Filed March 9`, 1939V 4 Sheets-Sheet 1 X ttorrwey.

July 7, 1942. G. s. FULLER 2,288,944

CLEANING DEVICE Filed uarcn 9, 1959 4 sheets-sheet 2 Inventor: Gerald SPUIleT:

Attorney July 7, 1942- G. S. FULLER CLEANING DEVICE Filed March 9. 1939 4 Sheets-Sheet 3 July 7, 1942. G. s. FULLER 2,288,944

. CLEANING DEVICE Filed arch 9. 1939 4 Sheets-Sheet 4 .arf

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Patented July 7, 1942 UNITED STATES PATENT OFFICE CLEANING DEVICE Gerald S. Fuller, Schenectady, N. Y.

Application March 9, 1939, Serial No. 260,749

(Cl. fel- 110) 27 Claims.

My invention relates to cleaning devices, and more particularly to machines for polishing and cleaning space bands.

In casting type on linotype machines, the space bands, such as are used to separate words in each line, require frequent polishing and cleaning, as well as, regular graphite lubrication of the dovetail interconnection between the long wedge and the sleeve or short wedge. In use, the sleeve tends to collect a small oxide stain at the casting point, and, if this is allowed to accumulate and is not removed, the band will fail to provide a tight lookup with the matrices, so that a small iin of metal will be formed on the casting, which will result in objectionable hair lines printed adjacent the letters. Small deposits of metal also may adhere to the space band sleeves if after repeated use the oxide is not removed. It is not necessary to clean the other side of the space band, as the casting point generally is different for the long Wedge each time the band is used. Machines have been built for polishing spa-ce bands but have not been very satisfactory due to their general inability to clean the bands without wearing down the edges thereof resulting from uneven pressure lover the entire face of the bands and vibration of the bands due to inability in maintaining the casting faces thereof parallel to the polishing surface as they are moved over this surface. Furthermore, the usual arrangement of the polishing surface is such as to cause the scattering about of a large amount of graphite when the `machine is operated. The conventional method for cleaning space bands still is a disagreeable task, usually assigned to an assistant who cleans -them by hand, using a considerable amount of time and effort to provide a far from uniformly satisfactory cleaning.

An object of my invention is to provide an irnproved and simplified cleaning device.

Another object of my invention is to provide an improved polishing machine and improved simplified elements, parts, and operating means for such a machine.

A further object of my invention is to provide an improved method of polishing space bands.

Further objects and advantages of my invention will become apparent and my invention will be better understood from the following description referring to the accompanying drawings, and the features of novelty which characterize my invention will be pointed out with particularity in the claims appended to and forming a part of this specication.

In the drawings, Fig. l is an elevational view of my improved cleaning machine, partly broken away to show more clearly the operating mechanisms and the band transfer mechanism; Fig. 2

. is a plan View of the machine shown in Fig. 1; Fig.

3 is a perspective view of a space band; Fig. 4 is a plan view of my improved magazine for the machine illustrated in Figs. 1 and 2, shown in its position adjacent the polishing disk; Fig. 5 is a fragmentary view of the magazine shown in Fig. 4, illustrating the mounting of the collecting table thereon; Fig. 6 isa side View of the magazine shown in Fig. 5, partly broken away to show the handle construction; Fig. 7 is an end view of the magazine shown in Fig. 5, partly broken away to illustrate better the guiding arrangement of space bands in the magazine; Fig. 8 is an elevational view of my improved polishing -disk in position for feeding graphite to the inner part of the polishing surface, partly broken away to show better the construction of the reservoir compartments; Fig. 9 shows the polishing disk of Fig. 8, partly broken away, in position for supplying graphite to the outer part of the polishing surface; Fig. 10 is an enlarged sectional view taken along line IO-IU of Fig. 9; Fig. l l is a fragmentary plan view of space band biasing device on collecting table; Fig. 12 is a fragmentary side view, partly broken away, showing7 relative arrangement of -guiding means for bands on collecting table when first band is ejected from transfer mechanism, to collecting table; Fig. 13 is an end view of collecting table and transfer mechanism, partly broken away to show guiding arrangement for bands with no bands on the collecting table and a band clamped in the transfer mechanism; Fig, 14 is a plan view ofy the collecting table shown in Figs. 2 and 13; Fig. 15 is a fragmentary plan View of the machine shown in Figs. 1 and 2, illustrating the relative positions of the polishing disk, magazine,

transfer mechanism, and collecting table, as the magazine and collecting table reciprocate toward the transfer mechanism and a space band begins to enter the transfer mechanism; Fig. 16 is a fragmentary plan view of the elements shown in on a band sleeve into contact with the polishing disk when the band is clamped to the transfer mechanism; Fig. 18 is an enlarged sectional View taken along line |8-l8 of Fig. 17; and Fig. .19 shows the elements illustrated in Figs. to 18 with the magazine at the end of its reciprocation toward starting edge of polishing disk and the collecting table in band receiving position, showing ejector plate in band ejecting position, and the guiding arrangement of a plurality of space bands on the magazine.

Referring to the drawings, I have shown an embodiment oi' my invention as a complete unit mounted on a main base 20. A source of motive power for my device is provided by an electric motor 2l having a rotatable drive shaft 22, which is connected to a countershaft Z3 by a flexible coupling 24. The countershaft 23 is mounted in bearings in a driving mechanism supporting base 25 secured by bolts 26 to the main base 2e, and a worm 2-'1 is secured thereto. Asecond vcountershaft 23 is mounted in the supporting 'base 25 and is provided with a worm gear 23 secured thereto at one :end and arranged in engagement with vthe worm '2l and adapted .to be driven thereby. A spur gear 33 is mounted on the other end of the shaft 28 in driving engagement with two other spur gears 3| and 32 .secured to shafts 33 and respectively, .also mounted in the supporting base 25. The shaft 34 is the drive shaft for the various parts of the band movement and actuating mechanisms, yand the shaft 33 is the drive shaft for a polishing disk or wheel 35. The details of this improved polishing disk are shown in Figs. 8, 9, and 10.

In order to provide against the wasteful .and inconvenient scattering of abrasive by the polishing disk as it rotates, I have constructed and arranged it so that the abrasive material will be fed to the polishing surface 3.o thereof only through a small sector of its revolution adjacent the traverse thereacross of a space band. This sector is adjacent the horizontal diameter of the wheel, as this provides the maximum vtravel for a band across the face of the disk. I prefer to use graphite for the abrasive material, as it also is a lubricant and tends to enter the slight clearances between the dovetail interconnections 3l of a long wedge 38 and a sleeve 39 of a space band, thereby automatically providing the requisite lubrication to it while polishing it. As shown in Figs. 8 and 9, the disk is provided with a plurality of inner compartments i5 and two sets of three outer compartments il and 42 formed in a container reservoir back plate 43. This container plate preferably in a single casting and is formed with a central bore 44 for mounting on the shaft 33. A circular facing block 55 of fibrous, porous, end grain material, such asend grain pine wood, is fitted into a rabbet formed around the outer edge of the container plate i3 .and is secured thereto by screws extending from the back of the plate 43 through inner vand

outer openings

41 and 43, respectively. The facing block i5 is drawn up tight against the edges of the walls which separate the compartments di), 4I, and i2 to prevent leakage of graphite from around this block 45 and the screws which fasten it to the reservoir plate G3 are made of such length as not to extend through the block to the polishing surface 35 to insure against damage to a space band by a protruding screw. Openings is are formed through the walls between the compartments to provide for passage freely therebetween cf graphite. The

inner compartments il form the reservoirs to which graphite 53 is supplied through passages E! formed through the reservoir plate 43 from the cuter cylindrical edge thereof. The outer ends of these passages 5| are threaded and a plug 52 is screwed therein to seal them against the escape of graphite. Thus the abrasive material can be supplied to the inner reservoir compartments 43 without removal of the facing block 45 from the reservoir plate @3. The graphite 53 is supplied to the polishing surface 35 from the outer compartments 42 through three openings 53 adjacent the outer periphery of the block 45 and from the outer compartments 4I through th-ree openings 5d at about one-third of the distance-from the center to the outer edge of the block. As shown in detail in Fig. 10, the inner portion of each of these

feed openings

53 and 54 are larger than the outer portion and a metal nipple or lining 55 is inserted therein to reduce the friction of the sides of the, opening and to provide a larger passage vwhich will not tend to become clogged as readily asa smaller opening. In operation the polishing disk rotates, as indicated by the arrow 56, in a clockwise direction as seen in Figs. l, 8, and 9, and each outer compartment inxturn, once each revolution, spills its graphite 55 from the trailing end thereof toward its leading end in the direction of rotation. This spilling forces the graphite out through the

openings

53 and 54. Fig. 8 shows the disk with one of the compartments 4l in spilling and feeding position. This compartment is formed with .a slight pocket on its trailing end to increase the spilling force of the graphite to make it feed more readily out through the opening 54. Fig. `9 shows the polishing disk with one of the compartments i2 in spilling feeding position. Since this compartment has no special spilling pocket, I have found it desirable to provide a side 5l tapered toward the openings 53 for guiding the abrasive material lto the openings 53. Thus, each of the circumferentially and radially spaced apart

outlets

53 and 55 feeds graphite to the polishing surface 36 of the disk 35 ence each revolution thereof and one at a time, at the most advantageous sector of its revolution. The porous end grain of pine wood also helps provide Athe desirable slightly unglazed surface -to the pollishing face 33 lof the disk 35, and aids in distributing properly the abrasive.

In cleaning space bands, it is of utmost importance that the casting faces thereof, lwhich are presented to the polishing face of the disk, should be maintained substantially parallel to this face under a substantially uniform .pressure over the entire face of the band to prevent oscillation and chattering of the band, as such motion would tend to wear down the edges of the band and cause leakage of metal past these worn edges when casting type. My improved machine provides for a uniform pressure and for positive guiding of each part of the bands `as they travel across the face of the polishing disk.

I provide a feeding magazine 58 for automatically and successively feeding space bands singly to the polishing disk 35 and provide for the ready removal thereof from the machine by clamping it to a bracket 53 by a bolt 65 extending through the bracket 59 and a supporting leg iii formed on the magazine 58. The magazine 58 is reciprocated across the face of the polishing disk 35 from the outer edge thereof toward a band removing mechanism by a cross head 62, which is mounted in guideways 53 formed in a supporting frame 64 secured to the main base 20. The crosshead 62 is reciprocated by a connecting rod 65 pivotally secured thereto by a .pivot pin 66 and to an eccentric pivot 61 mounted on and adapted to -be driven by the gear 32. Figs. 4, 5, 6, 7, and 19 illustrate the details of this improved magazine.

A plurality of space bands may be placed on the magazine 58 with the ears 81 of their sleeves 39 about a guide boss 68, as shown in Fig. 7, and the end slot |32 in the long wedge about a guide flange 69, secured to the opposite side of magazine 58 by screws 10 and extending 1ongitudinally thereof. Since the bands are wedgeshaped and must be assembled with the casting face thereof on which the oxide forms, as shown at 39 in. Fig. 3, toward the polishing disk 35, they will assemble as shown in' Fig. 19, and a pressure plate 1| is pivotally secured by a pivot pin 12 to the end of a pressure rod 13 to provide a substantially uniform pressure over substantially the entire face of the bands and a slightI biasing force thereon, tending to urge the bands toward the guide flange 69 to keep them in guiding engagement therewith. The pressure rod 13 is slidably supported in a boss 14 formed on the outer end of the magazine 58, and it is provided with a knob handle 15 having a split upstanding boss 16 thereon through which the rod 13 extends and is clamped by a screw 11. Anopening is formed in the handle 15, and a tube 18 is inserted and clamped therein by the action of the screw 11 in drawing together the parts of the knob handle 15 separated by the slot 19. This tube 18 is slidably tted into a longitudi nally extending opening 80 formed in the ymagazine 58, and -a tension biasing spring 8| is arranged within the tube 18 and secured to the outer end thereof by a pin 82 and to the magazine 58 at the inner end of the opening 80 by a pin 83, so as to bias resiliently the tube 18 and the pressure rod 13 and plate 1| toward the inner edge of the magazine 58 and the polishing disk 35. The space band shown by dotted lines in Fig. '1 is illustrative of the relative position of a space band when in engagement with the polishing disk 35 and is not correct in representing the clearances between the band and the various guiding surfaces. These clearances actually are very slight in order to prevent possible chattering of these bands. A small stop 84 is arranged in a slot in the guide boss 68 and is pivotally secured therein by a pivot pin 85. A compression spring 86 is arranged in an opening in the boss 68, and it engages the inner edge of the stop 84 to bias it resiliently outwardly toward the polishing surface 36 of the disk, thereby effectively insuring against passage of a space band endwise between the disk 35 and the magazine 58 on this side of the magazine 58.

In order properly to guide the space bands parallel to the disk 35 and to provide a desired pressure on the ears 81 on a sleeve 39 of a band as it leaves the magazine 58, I provide a pair of

iingers

88 and 89 pivotally secured by pivot pins 90 and 9|, respectively, to the magazine 58, one above and one below the opening for a space band. These

fingers

88 and 89 are resiliently biased toward the disk by compression springs 92 and 93, respectively, extending into complementary openings in the

fingers

88 and 89 and in an end block 94 secured to the magazine 58 by screws 95. As shown in Fig. 18, these pivoted guide

fingers

88 and 89 extend directly above and below the edges of the long wedge portion 38/of a space band in the magazine 58 and prevent any movement sidewise thereof while in the magazine feed opening. In order further to insure proper alignment of these bands, a `pair of

stationary guides

96 and 91 are secured by

screws

98 and 99 to the end block 94 and the base of the magazine 58, respectively, one above and one below the pivoted

guide fingers

88 and 89. The clearances between these stationary guide bars 96 and 91 and the disk 35 is exaggerated in Figs. 4, 6, and 18, and is less than the thickness of the ears 81 of a band sleeve 39. Thus, after the polishing operation, when a band is removed from the magazine 58, as Will be explained later, the pivoted guides 88 and 89 press against the ears 81 and urge them into engagement with the disk 35, while the

stationary guides

96 and 91 engage the outer ends of the ears 81 to guide this end of the lband and maintain alignment of the band throughout the polishing operations, as shown in Fig. 18.

In order to lprovide a completely automatic machine, I provide an arrangement for automatically and successively removing space bands from the feeding magazine 58 on completion of the polishing operation and assemble them in a symmetrical order on a collecting table 09. The reciprocation of the magazine 58 across the disk 35 to polish a banld is such that, as the magazine 58 approaches the end of this travel toward the collecting arrangement, a transfer mecha nism securely clamps the band thereto and prevents its return with the magazine 58 as it reciprocates to starting position. This transfer mechanism includes a supporting frame |0| se- .cured to the frame 64 and having a stationary flange or lip I 02, which forms an upper clamping surface in alignment with the lower surface of the pivoted upper nger 88 on the magazine 5B. Thebands are adapted to be clamped, as stated, between this flange |02 and an oscillatable cam |03 secured to a pin |04 mounted in the frame |0|. An ejector plate |05 is mounted on a rod |06 and extends between the flange |02 and the cam |03. This ejector plate is provided with a guide face |05a tapered .away from the disk 35 and the collecting table |00 and guides the bands in clamping position as they pass from the polishing disk 35 to the transfer mechanism. The rod |06 is slidably mounted in the frame lill and is formed with a slot |01 extending longitudinally thereof at the opposite end from the ejector plate |05. This plate is arranged to eject a space band from its clamped position on the transfer mechanism to the collecting table |09, when the magazine 58 has returned to starting position and the collecting table |90 is in receiving position, as shown in Fig. 19. This operation will be explained later. In thus ejecting a balnd the plate and rod |06 are reciprocated and the clamping cam |03 is released to permit free movement of the band as it is ejected. The reciprocation of the plate |05 and rod is produced by an actuating dog |08 which projects into the slot |01 in the rod |06, and which is secured to the frame |0| by a pivot pin |09. In order to permit the free entrance of a band into the transfer mechanism, it is necessary that the ejector plate |05 be in withdrawn guiding position, as has been explained, and that the cam |03 be in released position. Thus, for part of the cycle of operation the cam |03 is actuated and released and the plate |85 is not actuated and Withdrawn, then the cam |03 must be actuated to clamped position with the plate |05 still withdrawn, next the cam |03 must be released and the plate |05 must be actuated to extended or ejecting position, and during the remainder of the cycle the cam |03 is in clamped position with the plate |05 in retracted guiding position. This cycle of operation is obtained by an arrangement of cams and links and a biasing spring, which connect the source of motive lpower to a lever fitted over the pin |33 and secured thereto .by a set screw Hil, and also connected to the pivoted dog |30 by a link H2, connected to the dog |00 by a pivot pin i i3 and to the lever i0 by a pivot pin i4. Figs. l, 13, and l to 19, illustrate the details of this construction. The .lower end of the lever 0 is secured to the upper end of follower .lever ||5 by a link i3 pivotally secured to each by pivot pins lil and H0, respectively. This follower lever ||5 is oscillatably mounted by a pivot pin i3 on the supporting base 25, and provided with a follower roller |30 rotatably mounted on the lower end thereof by a pivot pin |2|. This follower roller is biased toward the drive shaft 34 by a tension spring |22 secured to the upper arm of the lever H5 and to frame 64, to bias resiliently the actuating linkage connected to the ejector plate k05 and clamping cam |03, to urge the plate to retracted guiding position and the clamping cam V|03 to `clamped position. As shown in Fig. l, when the crosshead 32 moves to the right, a relatively long cam |33, secured to the shaft 33, rotates clockwise toward the follower roller |23, and, as the magazine approaches the position shown in Fig. l5, the cam |23 engages the roller |20 and urges it in a counter-clockwise direction, thereby turning the lever H3 through the link lit` in a clockwise direction, as seen in Fig. l, and releasing the clamping cam |03 for further rotation of the cam |23 until the end of travel of the crosshead 32 toward the right. The radius of the cam |23 is such that it moves the dog i03 only the length of the slot |07, so that it does not actuate the ejector plate |05 by this movement. This position is represented in. Fig. 16. Further rotation `of shaft 34 causes the cam |23 to release vthe roller |20, with the result that the spring |22 biases the lever ||5 clockwise and the clamping cani |03 counter-clockwise to clamping position, as shown in Fig. 13, to secure a band between it and the flange |02. This position is shown in Fig. 17. When a band is to be ejected it is necessary that the dog |08 moves the ejector plate |05to electing position, and a cam |23', secured to the shaft 34 and rotatable therewith, engages the follower roller |20 to actuate the lever H0 to release the clamping cam |03, and the radius of the cam |223 is greater than the cam |23, so that the lever ||0 is actuated further and the dog |00 engages the forward side of the slot |37 to move the ejector plate |05 to ejecting position when the clamping cam |103 is released. Thus the quick ejecting action is obtained, and the clamping cam |03 is released as desired by the two cams |23 and |23 at different times. All space bands will acquire the oxide deposit on the same face of the sleeve and, therefore, they should all present this same casting face to the polishing disk. Thus, they will all be received in the transfer mechanism with the same face in the same corresponding direction. It is desirable that the cleaned space bands should be assembled in this order, and I, therefore, provide my improved collecting arrangement, in-

l ment of the arm |35.

cluding the table |00. This table is supported on the magazine 53 by an arm |24, which is rigidly secured thereto by a screw |25 and pivotally mounted on the magazine 53 by a pivot |26. A tension spring |21 is secured to an eye |20 on the table end of the arm |24 and to the bracket leg 6| of the magazine, to bias resiliently the collecting table |00 to a position with the front flange |29 thereof substantially in alignment with the face of the disk 35. An adjustable stop screw |30 is secured to the arm |24 and is adapted to engage the lower edge of the magazine end .block 34 to limit the position of the collecting table, and adjustment. of the stop screw |30 provides .adjustment of the collecting table alignment. A guide flange |3| is secured to one side of the table. |00 and is adapted to engage a complementary surface on the slots |32 of the long wedge 33 of the space bands to assist in assembling the bands on the table |00 as they are ejected from the transfer mechanism. In order to maintain the bands in substantially upright position on the table |00, I have found it desirable to provide a pair of weight bars |33 for Vbiasing the upper edges of the bands toward the ejector. These bars |33 are formed with elongated slots |34, extending transversely of the bars |33 adjacent each end thereof and are mounted on a crank arm |35 by pins |33 extending through the arm |35 and loosely through the slots |34. latching cam |37 on the other end thereof and is pivotal-ly mounted on the collecting table .by a pin |38 extending through ears |33 on the under side of the table |30. The cam |33 is provided with a straight side |530 arranged to engage a latching bolt |4|, which is slidably mounted in a boss |42 formed on the under side of the table. A compression spring |03 biases the bolt |4| against the cam |40 and biases the crank arm in a clockwise direction as seen in Fig. 13, down over the table. An adjustable stop screw |44 extends through the arm |35 and engages the edge of the table |00 to limit the downward move- To remove the assembled bands from the table |30, the arm |35 is merely lifted, and the cam |31 rides under the bolt UH, permitting the pivoting of the arm |35 under the lifting force on the arm |35. I have found that the rst few bands collected on the table |00 require special biasing means to prevent their falling down or off the table |00. To this end the upstanding flange plate |23 is secured to the inner edge of the table |00 to extend a slight amount above the top of the table |00 and retain the lower edge of a band on the table |30. A downwardly extending flange |40 is secured to a linger |43 which is pivotally secured to the crank arm |35 by a pivot pin I4?. A pin |48 secured to the ilnger |43 loosely extends into an opening |40 in the arm |35 to limit the relative movement therebetween and allow a predetermined amount of play. Thus, when a band 33 is ejected onto the ta-b-le |00, it passes under the flange |45, as shown in Fig. 12, lifting the flange |45, and then the flange |35 falls on the ejector side of the .band as the ejector plate |05 is retracted, thus, preventing the band from falling off the table |00. As shown in this gure, the band 30 raises the ends of the 'weight bars |33, and these bias it slightly toward the flange |45 and tend to hold it upright. In order to hold forward the bottom edge of bands 38 as the rst few are collected on the table |00, I provide a dog |50, pivotally mounted in a slot 5| by a pin |52 and biased The crank arm |35 is formed with -aV upwardly by a spring |53 mounted on a pin |54 on ears |55 on the lower side of the table Ili). The dog |50 swings down level with the top of the table lil as the bands accumulate, and it is no longer necessary to thus bias their lower edges.

Figs. l to 19 illustrate various operating positions or' the magazine 58, collecting table lud, transfer mechanism, and polishing disk The positions shown in Figs. and lb have been explained, and show the positions when a band is beginning to enter the transfer mechanism and when it has just been clamped thereon, respectively. As the magazine 58 returns toward starting position the band passes out of the magazine t8, and, since there is a silght taper' to the guiding ejector plate |65, the band might tend not to remain parallel to the disk To obviate this, I provide a pressure slide E55, which is slidably mounted between a guide plate itl and the end block 94. A compression spring ies is seated in an opening in the block su and engages the back of a head lts on the slide ist to cias it toward the disk 35. An adjustment screw itt extends through the other end of the slide i and is adapted to engage the edge of the end block 94 to limit the forward movement or' the slide It to provide a slight clearance between the head |59 and the disk As the magazine returns to starting position the pressure slide |56 engages the back of the band 38 clamped in the transfer mechanism and biases it toward the disk, as shown in Figs. 'rf and 18. Furthermore, the pivoted fingers engage the ears tl of the sleeve 39, as they pass each other, so that these fingers bias the ears 8l toward the disk 35 and thus maintain the casting face of the band substantially parallel to the disk 35 during contact therewith. Fig. 19 illustrates the relative positions of the magazine te, disk bands, table Iii, and transfer mechanism at the end of the return travel of the magasine t, with the table Hill in receiving position and the ejector plate ii in electing position, and the machine is ready to start polishing another band.

While I have illustrated and described an embodiment of my invention, modifications thereof will occur to those skilled in the art. I desire it to be understood, therefore, that I intend in the appended claims to cover all modiiications which do not depart from the spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent of the United States, is:

l. A polishing machine having a rotatable polishing disk, means for feeding space bands to .said polishing disk, means for moving space bands across said polishing disk substantially along a diameter thereof for polishing the bands, other means for removing a space band from said feeding means after said polishing, and means for receiving and assembling space bands on removal thereof from said feeding means.

2. A polishing machine having a rotatable polishing disk, means for feeding space bands to said polishing disk, means for moving space bands across said polishing disk substantially along a diameter thereof for polishing the bands, means for retaining a space band with the casting face thereof substantially parallel to said polishing disk during contact with said polishing disk, other means for automatically removing a space band from said feeding means after fsaid polishing, and means for receiving and assembling space bands on removal thereof from said feeding means.

3. A polishing machine having a rotatable polishing disk, means for automatically feeding space bands to said polishing disk, means for moving space bands across said polishing disk with the casting faces thereof in contact with said polishing disk substantially along a diameter thereof for polishing the bands, means for retaining a space band with the casting face thereof substantially parallel to said polishing disk during contact with said polishing disk, other means for automatically removing a space band from said feeding means after said polishing, and means for receiving and assembling space bands on removal thereof from said feeding means.

ll. A polishing machine having a rotatable polishing disk, means for successively feeding space bands to said polishing disk, means for successively and singly moving space bands across said polishing disk with the casting faces thereof in contact with said polishing disk substantially along a diameter thereof for polishing the bands, means for retaining a space band with the casting face thereof substantially parallel to said polishing disk during Contact with said polishing disk, and other means for removing each space band from said feeding means after said polishing.

5. A polishing machine having a rotatable polishing disk, means including a facing block of fibrous material for said disk, means for successively feeding space bands to said polishing disk, and for moving space bands across said polishing disk, means for feeding abrasive material to said facing block adjacent a horizontal diameter of said block at substantially the traverse of a space band across said disk, means for retaining a space band with the casting face thereof in contact with said polishing disk and substantially parallel thereto during contact with said disk, and other means for automatically removing a space band from said feeding means.

6. A polishing machine having a rotatable polishing disk, a facing block for said disk, means for feeding space bands to said polishing disk, means for moving space bands across said polishing disk, means for feeding abrasive material to said facing block adjacent a horizontal diameter of said block at substantially the traverse of a space band across said disk, means for retaining a space band with the casting face thereof in contact with said polishing disk and substantially parallel thereto during contact with said disk, and other means for removing a space band from said feeding means.

7. A polishing machine having a rotatable pollishing disk, means for moving a space band longitudinally thereof in contact with said polishing disk for polishing a band, means for holding the casting face of a space band substantially parallel to said disk during contact therewith, other means for removing a space band from said moving means after said polishing, and means for collecting space bands from said removing means.

8. A polishing machine having a rotatable polishing disk, means including a magazine for successively and singly feeding space bands to said polishing disk for polishing the bands, means including a guide arranged to engage a complementary surface of space bands for guiding space bands longitudinally of said magazine, means for moving a space band longitudinally thereof in contact with said polishing disk, means for holding the casting face of a space band substantially parallel to said disk during contact therewith, other means for removing a space band from said feeding means after said polishing, and means for collecting space bands from said removing means.

9. A polishing machine having a rotatable polishing disk, means including a magazine for successively and singly feeding sp-ace bands to said polishing disk for polishing the bands, means including a guide arranged to engage a complementary surface on space bands for guiding space bands longitudinally of said magazine, means including a stop adjacent the side of said magazine adjacent an edge of said disk for insuring against passage of a space band endwise between said disk and said magazine on said side of said magazine, means for moving a space band longitudinally thereof in contact with said polishing disk, means for holding the casting face of a space band substantially parallel to said disk during contact therewith, and other means for removing a space band from said feeding means after said polishing.

l0. A polishing machine having a rotatable polishing disk, means including a magazine for feeding space bands to said polishing disk, means for moving space bands across said polishing disk, means including a transfer mechanism for removing a space band from said feeding means after movement across said polishing disk, means including fingers pivotally mounted at one end thereof adjacent one side of said magazine and resiliently biased toward said disk for retaining a band between said fingers and for guiding the band substantially parallel to said disk, said fingers being arranged to engage the sleeve ears of a Space band and resiliently biasing said ears toward said disk when the band is in said removing means, and means for receiving said bands from said removing means.

l1. A polishing machine having a rotatable polishing disk, means for feeding space bands to said polishing disk, means for reciprocating said feeding means across said polishing disk, means including a transfer mechanism for removing space bands from said feeding means after its movement across said disk, said transfer mechanism including means for clamping a space band thereto at the end of reciprocating travel of said feeding means toward said mechanism, means including an ejector on said transfer mechanism for guiding a space. band during movement to clamped position on said transfer mechanism and for ejecting a band from said transfer mechanism, means for actuating said ejector to eject a space band when said feeding means has reciprocated back to starting position opposite said disk, and means for releasing said band clamping means when said feeding means is reciprocating toward said transfer mechanism and also when a band is being ejected therefrom.

' l2. A polishing machine having a rotatable polishing disk, means including a magazine for automatically feeding space bands to said disk adjacent one side of said disk, means for applying substantially uniform pressure to substantially the entire face of the space bands and toward said polishing disk, means including said magazine for moving a space band across said polishing disk with the casting face of said band in contact with said disk, means including a transfer'mechalm for removing a space band from said magazine, means including a stop pivotally mounted on said magazine adjacent one side thereof and resiliently biased toward said disk for insuring against passage of a space band endwise between said disk and said magazine on said one side of said magazine, means including a pair of fingers pivotally mounted at one end thereof adjacent said stop on said magazine and resiliently biased toward said disk for retaining the band between said fingers and for guiding the band substantially parallel to said disk7 and means for receiving and assembling space bands from said transfer mechanism on removal of the bands from said magazine'.

13. A polishing machine having a rotatable polishing disk, means including a movable magazine for feeding space bands to said polishing disk adjacent one side of said disk, means for applying substantially uniform pressure to the face of the space bands and toward said polishing disk, means including said magazine for moving a space band across said polishing disk with the casting face of said band in contact with said disk, means including a transfer mechanism for removing a space band from said magazine at the end of the movement of said magazine and space band across said polishing disk, means including a stop pivotally mounted on said magaine adjacent one side `thereof for insuring against passage of a space band endwise between said disk and said magazine on said one side of said magazine, means including a pair of fingers pivotally mounted at one end thereof adjacent said stop on one side of said magazine and resiliently biased toward said disk for retaining the band between said fingers and fcr guiding the band substantially parallel to said disk, said fingers being arranged to engage the sleeve ears of a space band and resiliently biasing said ears toward said disk when the band is clamped in said transfer mechanism, and means for receiving and assembling'space bands from said transfer mechanism on removal of the bands from said magazine.

14. A polishing machine having a rotatable polishing disk, meansY including a movable magazine for successively feeding space bands to said polishing disk adjacent one side of said disk, means for applying substantially uniform pressure over the face of the space bands and toward said polishing disk, means including said magazine for moving a space band across said polishing disk with the casting face of said band in contact with said disk, means'including a transfer mechanism arranged to clamp a space band thereto at the end of the movement of said magazine and space band across said polishing disk for removing a space band from said magazine, means including a pair of fingers pivotally mounted at one end thereof on one side of said magazine and resiliently biased toward said disk for retaining the band between said fingers and forr guiding the band substantially parallel to said disk, and means for receiving and assembling space bands from said transfer mechanism on removal of the bands from said magazine.

l5. A polishing machine having av rotatable polishing disk, a facing block of fibrous material for said disk, means for feeding space bands to said polishing disk, means for feeding abrasive material to said facing block adjacent a horizontal diameter of said block .at substantially the traverse of a space band across said disk, means for moving space bands across said polishing block adjacent said predetermined abrasive feeding positions of said disk, means for retaining a space band with the casting face thereof in contact with said polishing disk and substantially parallel thereto during contact with said disk, other means for removing a space band from said feeding means, and means for receiving said space bands on removal thereof from said feeding means.

16. A polishing machine having a rotatable polishing disk, means including a magazine for feeding space bands to said polishing disk adjacent one side of said disk, means for applying substantially uniform pressure over the face of the space bands, means including said magazine for moving a space band across said polishing disk with the casting face of said band in contact with said disk, means including a transfer mechanism for removing the space band from said magazine at the end of the movement of said magazine and space band across said polishing disk, means including a pair of ngers pivotally mounted at one end thereof on one side of said magazine and resiliently biased toward said disk arranged to extend one above and one below a space band when moving across said disk for retaining the band between said fingers and for guiding the band substantially parallel to said disk, and means for receiving and assembling space bands from said transfer mechanism on removal of the bands from said magazine.

17. A polishing machine having a rotatable polishing disk, means including a magazine for feeding space bands to said polishing disk in a posi'- tion extending from adjacent an edge substantially diametrically of said disk, means including a transfer mechanism for remvoing space bands from said magazine, means for reciprocating said magazine across said polishing disk and said transfer mechanism, means for maintaining the casting face of a space band substantially parallel to said disk during contact therewith, said transfer mechanism including means for clamping a space band thereto at end of reciprocating travel of said magazine toward said mechanism, means including a reciprocatable collecting table for receiving space bands from said transfer mechanism, means including an ejector plate on said transfer mechanism for ejecting a clamped band from said transfer mechanism, means for actuating said ejector plate to eject a clamped space band from clamped position when said collecting table is in a receiving position adjacent said ejector, and means for releasing said band clamping means when said magazine is reciprocating toward said transfer mechanism and also when said collecting table is in receiving position adjacent said transfer mechanism.

18. A polishing machine having a rotatable polishing disk, means including a magazine for feeding space bands to said polishing disk, means including a transfer mechanism for removing space bands from said magazine, means for reciprocating said magazine across said polishing disk and said transfer mechanism, said transfer mechanism including means for clamping a space band thereto at end of reciprocating travel of said magazine toward said mechanism, means including a reciprocatable collecting table for receiving space bands from said transfer mechanism on removal thereof from said magazine, means including an ejector plate on said transfer mechanism for ejecting a clamped band from said transfer mechanism, and means for actu- CII ating said ejector plate to eject a clamped space band from clamped position when said collecting table is in a receiving position adjacent said ejector.

19. A polishing machine having a rotatable polishing disk, means including a magazine for feeding space bands to said polishing disk in a position extending from adjacent an edge substantially diametrically of said disk, means including a transfer mechanism for removing space bands from said magazine, means for reciprocating said magazine across said polishing disk and said transfer mechanism, resilient biasing means for applying a pressure to space bands in said magazine toward said polishing disk, said transfer mechanism including means for clamping a space band thereto at end of reciprocating travel of said magazine toward said mechanism, means including a reciprocatable collecting table secured to said magazine for receiving and assembling space bands from said transfer mechanism on removal thereof from said magazine, means including an ejector plate on said transfer mechanism for guiding a space band during movement to clamped position on said transfer mechanism and for ejecting a clamped band from said transfer mechanism, and means for actuating said ejector plate to eject a clamped space band from clamped position when said collecting table is in a receiving position adjacent said ejector.

20. A polishing machine having a rotatable polishing disk, means including a magazine for feeding space bands to said polishing disk, means including a transfer mechanism for removing space bands from said magazine, means for reciprocating said magazine across said polishing disk and transfer mechanism, said transfer mechanism including means for clamping a space band thereto at end of reciprocating travel of said magazine toward said mechanism, means including a reciprocatable collecting table secured to said magazine for receiving space bands from said transfer mechanism on removal thereof from said magazine, means including an ejector plate on said transfer mechanism for guiding a space band during movement to clamped position on said transfer mechanism and for ejecting a clamped band from said transfer mechanism, means for actuating said ejector plate to. eject a clamped' space band from clamped position when said collecting table is in a receiving position adjacent said ejector, and means for releasing said band clamping means when said magazine is reciprocating toward said transfer mechanism and also when said collecting table is in receiving position adjacent said transfer mechanism.

21. A polishing machine having a rotatable polishing disk, means for feeding space bands to said polishing disk, means for reciprocating said feeding means across said polishing disk, means including a transfer mechanism for removing space bands from said feeding means after its movement across said disk, said transfer mechanism including means for clamping a space band thereto at the end of reciprocating travel of said feeding means toward said mechanism, means including an ejector on said transfer mechanism for guiding a space band during movement to clamped position on said transfer mechanism and for ejecting a band from said transfer mechanism, and common means for actuating said ejector and said clamping means, a lost motion connection between said ejector and said actuating means,

said actuaitng means being arranged to release said band clamping means when said feeding means is reciprocating toward said transfer mechanism and also When said feeding means has moved back to starting position opposite said disk, said actuating means being arranged to actuate said ejector to eject a space band from said transfer mechanism simultaneously With the release of said clamping means when said feeding means is in starting position.

22. A polishing machine having a rotatable polishing disk, means for feeding space bands to said polishing disk, means for moving space bands across said polishing disk, means including a transfer mechanism for removing a space band from said feeding means, means including a collecting table for receiving and assembling .space bands on removal thereof from said transfer mechanism, means for guiding space bands on said collecting table when assembled thereon, means for engaging the upper edge of space bands for maintaining said bands substantially upright on said collecting table, and means for engaging a space band adjacent the upper edge thereof when received on said collecting table from said transfer mechanism to limit movement of said upper edge toward said transfer mechanism.

23. A polishing machine having a rotatable polishing disk, means for feeding space bands to said polishing disk, means for moving space bands across said polishing disk, means including a transfer mechanism for removing a space band from said feeding means, means including a collecting table for receiving and assembling space bands on removal thereof from said transfer mechanism, means for engaging the upper edge of space bands for maintaining said bands substantially upright on said collecting table, means for engaging a space band adjacent the upper edge thereof When received on said' collectmg table from said transfer mechanism to limit movement of said upper edge toward said transfer mechanism, means for biasing lower edge of a plurality of space bands toward said transfer mechanism when received on said collecting table, said last mentioned biasing means being arranged to become inoperative when said plurality of space bands are assembled on said collecting table, and means for limiting movement of lower edge of space bands on said collecting table toward sa1d transfer' mechanism.

24. A polishing machine having a rotatable polishing disk, means including a magazine for automatically and succesively feeding space bands to said polishing disk adjacent one side of sa1d disk substantially along a diameter thereof, means for applying substantially uniform pires- Y sure to substantially the entire face of the space bands and toward said polishing disk, means including said magazine for moving a space band across said polishing disk substantially along a diameter thereof with the casting face of said band in contact With said disk, means including a transfer mechanism arranged to clamp a space band. thereto at the end of the movement of said magazine and space band across said polishing disk for' removing a space band from said magazin-e, means includingA a stop pivotally mounted on said magazine adjacent one side thereof and resiliently biased toward said disk for insuring against passage of a space band endv/ise between said disk andsaid magazine on said one side of said magazine, means including a pair of ngers pivctally mounted at one end thereof adjacent said stop on said magazine and resiliently biased toward said disk arranged to extend one above and one below a space band when moving across said disk for retaining the band between said lingers and for guiding the band in position transversely thereof on said magazine substantially parallel to said disk, said lingers being arranged to engage the sleeve ears of a space band and resiliently biasing these ears toward said disk when the band is clamped in said transfer mechanism, and means for receiving and assembling space bands from said transfer mechanism on removal of the bands from said magazine.

25. A machine for polishing space bands including a rotatable polishing disk, means for feeding a band to said rotatable polishing disk in a position with the casting face of the band in contact with and substantially parallel to the surface of said disk, means for applying a substantially uniform pressure over substantially the entirev face of the` band, means for moving the LandV across the disk While maintaining it in said position parallel to the disk at all times When in contact with the disk, and means for removing and assembling the polished bands in a predetermined order.

26. A machine for polishing space bands including a rotatable polishing disk, means including a magazine for feeding a band to said rotatable pclishing disk in a position with the casting face of the band in contact with and substantially parallel to the surface of said disk, means for applying a substantially uniform pressure over the face of the band, means for moving the band across the disk and for removing the band from said feeding magazine while maintaining the band in said position parallel to said ydisk at all times when in contact with said disk, and means for removing and assembling the polished bands in a predeterminedl order.

27. A machine for polishing space bands including a rotatable polishing disk, means for successively feeding bands to said rotatable polishing disk in a polishing position with the casting face of the bands substantially parallel to the surface of said disk, means for applying a substantially uniform pressure over the face of the bands, and means for moving the bands across said disk substantially along a diameter of said disk and removing the band from the polishing position While maintaining it in said position parallel to saidV disk at all times when in contact with said disk.

GERALD S. FULLER.