US1002765A - Machine for grinding rollers. - Google Patents

Description

0. A. SCHMIDT.

MACHINE FOR GRINDING ROLLERS. APPLIOATION FILED D320. 27, 1910.

Patented Sept. 5, 1911.

2 SHEETS-SHEET L 1 IXXXXXXXXXILXXXIXXW XIXIIJUIXXXX Y XXX! \NVENTOR.

WITNESSES.

0. A. SCHMIDT. MACHINE FOR GRINDING ROLLEBS. APPLICATION FILED DEC. 27, 1910.

1,002,765. 1 Patented Sept. 5,1911.

2 BHEETG-SHEET 2.

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HHm58 W! NESSES. INVEN TOR.

AES PATENT FFICE,

OTEG AL'WIN S-CHIEIDT, OF CHELMSFOBD, ENGLAND, ASSIGNOR TO THE HGFFMANN MANUFACTURING COMPANY LIMITED, OF LONDON, ENGLAND.

MACHINE FOB GRINDING ROLLERS.

1l,!l@23,td5. p fi i n of Letters Patent Patented Sept, 5, 1911 Application filed December 27, 1am. SerialNo. 599,373.

To all whom it away concern: per to the entrance end of the groove or Be it known that I, Oa ro Am /1N SCHMIDT, grooves to which they are to be directed, or a subject of the German Emperor, and a the rollers could be propelled by a driven resident of Cholmstord, in the county of disk or member forming a support and a 5 Essex, England, have invented a certain new part of the guide as we have previously proso and useful improvement in Machines for posed. I Grinding Rollers, of which the following is One mannerof carrying a part of the insoc .ir'ication. vention into effect is to place a driven This invention relates to improvements in grooved wheel or wheels at one or both ends machines for grinding rollersand in part to of the holder groove or grooves, the wheel such that described in the specification to or wheels being suitably cased or covered for nwlication ior Letters Patent filed i-th a part of the way around,to form an inclosed 1910, under Serial No. 536259, in channel in which the rollers may be held in the rollers have a traveling rolling the same position-in which they are in the 15 ment in a guiding device which com holder groove or grooves, the wheels where I: as a part of it a groove in a straight two are employed being arranged at either ioioer guiding device the exposed cylinend of the holder groove or grooves and drical sur es of such rollers being While with the hopper between, and preferably in' such groove acted upon by a grinding or elevated above same, so that on leaving 0 disk with which such groove prefl a point on one wheel the rollers fall into the eraby forms the chord of an arc. hopper and in the case of the other wheel The object of the present invention is to where employed the accumulation of rollers improve the construction and to render the gradually forces them into the grip of same machine iore eiiicient. p by which they are passed to the entrance end 25 Accord ng to the invention the rollers of the groove or grooves. To attain'this end moving successively through a groove or the hopper is practically of the same width grooves of such a guiding device in a gri'ndas the groove or grooves and is preferably ing machine mixed in a hopper or inclined from one wheel to the other if the device, preferably while they are passed or second one is employed or is inclined toward 30 carried by a transferring device so that their One end so as to assist the rollers in moving I relativclpositions to one another are changed (if they are not driven through the hopper) (as is done in certain ball grinding maand it is also preferably .provided with a chine), afh rwhich they are again passed or ridge or weir rising from the bottom of same carried back to the same groove or grooves at some suitable point so that a pocket is 5 of the guiding device or to different ones as formed, at least on one side, to hold an acdesired, or they may be passed or carried cumulation of rollers. and to afford them the from the exit end of one straight groove or opportunity of mixing with those coming chord to the entrance end of the next (which from the delivery wheel, while the ridge or may be another grinding device or machine Weir checks their movement somewhat and 40 if desired; and so on by a suitable channel relieves the wheel at the exit end if emor channels. ployed, of a part of their weight. Further according to the invention th The gripping of the rollers by the wheel rollers are positively propelled in the transor wheels can be done in various ways as, ferring device, and they are also presented for nstance; y 3 fie b e. S band which is adjusted, for the purpose of preis desired to grip the rollers.

scnting them evenly to the face of the grind In the construction above described he ing machine. u axis of the grinding disk or member is pref- It is preferred, though it is\\not essential, erably vertical so that the holder is horiwhere the hopper is employed, to positively Zontal, but the reverse arrangement may be 5 carry or propel the rollers preferably after employed, the grinding member or disk havthey leave the exit end' of the groove or ing a horizontaLaxis. In this latter case grooves until they reach the" hopper (or in the holder *groove o'r grooves might be in a v addition through the latter) and to subsemore 'or less vertical position, the traveling 95 quently carry or propel them from the hoprolling movement imparted to the rollers to the grinding member by a guiding device ering that portion of the wheel in which it 1 0 by the grinding disk or member driving them upward and discharging them into the hopper in which they would be mixed and discharged by gravity to the entrance end of the holder groove or grooves. If the traveling rolling movement in the holder groove or grooves were downward some mechanical device as above described would be required to elevate the rollers to the hopper or in either case a grooved wheel or wheels might be employed to assist the movement of the rollers. The. holder may be further, so carried as to be adjustable so that it can present the desired faces of the roller evenly to the grinding disk or member. Such adjustment may be obtained in various ways.

Some examples of the above and other features of the invention are shown in the accompanying drawings in which Figure 1 is a front elevation partly in section of one: lorm'oi: the apparatus in whiclrthe grinding member or disk has a vertical axis. Fig. 2 is an end elevation of same also partly in section and with a part removed. Fig. 3 is a diagrammatic elevat-ion showing another form in which the grinding member or disk has a horizontal axis. Fig. t is a plan of a part of Fig. 3. Fig. 5 is a diagrammatic side elevation showing a further form in which the grind ing disk has a horizontal axis, and Fig. 6 is a front elevation of Fig.

In the form shown in Figs. 1 and 2 the shaft or axis 1 of the grinding disk or member 2 is vertical the latter being in this case mounted above a single groove or roller holder designated generally by 3 and at each end of such groove is placed a grooved wheel 4, 5 respectively suitably driven such as by sprocket wheels 7 and universal shafts 8 (Fig. 2) one only of the latter being indicated, the wheels 7 being preferably connected by a chain 7 which is in turn suitably driven as by a sprocketwheel 7 The grooves in the wheels 4, 5 are covered in for a portion of the way around their cir cumference as shown, the cover of the wheel 4 being a curved plate 11 over the groove pivoted at one end to the grooved holder 3 at 9 and at the other end attached to a hopper 10 which connects the wheels 4; and 5 above the grinding disk 2. v

The connection of the wheel co'ver ll with the hopper is preferably a springone such as by the flanges 12, 13, and spring surrounded screw bolt 1s so that an adjustment is provided which will enable the rotating wheel 4 to grip and propel the rollers.

The flange 13 may form part of a cover for-the hopper either fixed r removable, or as shown in the drawing it fna be carried only by a shield 15 atthe end 0 the hopper,

the main portion ofthe hopper being open.

The cover 16 of the wheel 5 has at one end a flange 17 connected to a flange 18 on the end 0 the hopper by a spring screw bolt 19 and at the other end it has a spindle 22 movable in an eye 20 of a strap 21 attached to the holder 3 said spindle carrying a spring 24: and-passing through an eye 23 on the holder 3. In-this way the contact of the cover 16 over all the rollers can be regulated and an inclosed channel in which the rollers are propelled is formed partly around each wheel. There are other ways however, of eiiecting the gripping of the rollers as for instance, by adjusting the wheel itself to exert greater or lesspressure or using other forms of spring covers, or by suitably forming or covering the surface of same.

The hopper guiding device and grooved holder including the wheels throughout are so formed by means of their side plates and bottom plates, that the rollers are a fairly close fit in same and are consequently maintained at right angles to their line of travel or rolling'movement.

If the wheel 5 is rotated in the direction of the arrow, the rollers will be driven around one half the circumference of same and discharged into the hopper 10 which in the form, shown is inclined toward one end soasto assist the rollers in moving (it they are not positively driven through the hopper). Such hopper is also provided with a ridge or weir 25 rising from the bottom of same so that a pocket is formed on one side to hold an accumulation of rollers and to afford them the opportunity of mixing with those comin from the delivery side of the wheel, while the ridge checks their movement somewhat and relieves the wheel at the exit end if employed of a part of their weight.

The grooved holder is preferably so carried as to be adjustable so that it can present the cylindrical faces of the rollers evenly to the grinding disk or member. Such adjustment may be obtained in various ways, for instance, the grooved holder can be carried by a block 27 having a curved base which seats in a correspondingly curved recess or seat 28 in the frame, bolts 29, 29 being employed as a means tor'holding the block in position and adjusting it laterally by tilting it in its seat 28.

The groove in the holder may be conveniently formed by clamping plates or bars 30 on each side of a central rib 31 forming part of the block such rib forming the bottom of the groove while the plates or bars form the sides of the grooves. This is a convenient arrangement asthe plates can be readily removed and refaced when required. v

The construction of grooved holder us hereinbefore described is useful also in the case of a grinding disk having a horizontal axis but in the latter case a different form of hopper is necessary and some examples of these are shown in Figs. 3 to 6. In Fig. 3 for example the grinding disk 32 is carried by a horizontal shaft 32 the. grooved holder 33 being in a vertical position. and counnunicating in this instance with a single suitably driven wheel 34 having a cover hinged at 36 and adjustable by s spring controlled screwed rod or bolt 37. The side of the wh cel which is farthest away from -the disk 32 is fed from an, inclined chute or hopper 38, which may consist of a curved inclined strip of sheet metal located between two'side plates or walls 39I A part of the strip may form a receptacle 38 for receiving and mixing the rollers, which may ,drop thercon from an upper oppositely inclined chute or hopper 40 provided if desired witha ridge 41 to give the rollers a further opportunity of? mixing. The rollers are forced uplvardly by the rotation of the wheel 3% and complete a circuit with a break in part of same above the receptacle 38 as shown but such break and receptaclemay dispensed with if desired.

'ln'Figs. -5 and 6 a simple hopper is employcd of a type somewhat similar to that proposed in the known ball grinding machine'referred to, the grinding disk 41-3 having a horizontal axis 4-3, and there being in this case two suitably driven wheels 41 45 connectt l by vertical roller holders formed preferably as a grooved cast structure 4-6 con iprising at the point Where it faces the disk, 21 back plate 47 and. side plate 48 (a portion 01* one only of which is shown in Fig, 5). and at the point where it forms acomlnnnication between the opposite sides of wheels 44, 45 comprising a back plate 49 side plates 50 (a portion of one only of which shown) and a, front plate or cover 51 whiclris out and flared outwardly at to form a hopper; Each wheel d4; and 45 is provided with are-over 53, 54: respectively, such covers being adjustable by spring screw belts in the manner previously-described. p

In place of locating the hopper on the side farthest away from the grinding member, it could be located at a point on the back plate 4;? which would be cut away for hat purpose but in this case the grinding member would be rotated in the opposite di ection. y

In all cases it is desirable, to obtain the best results, th'oug'h not necessary, to enrploy an excess number of rollers, that is to partly [ill the hoppers so as to maintain the continuity of the chain of rollers and con sequently their movement past the face of the grinding: disk through the holder and guiding device.

ln the particular form shown in Fig. while the chain of rollers or continuity is not complete the desired pressure to effect or assist the travel is maintained by the inclination of the lower chute.

Various forms of and locations tor,- the hopper have been described and. illustrated, but it will be appreciated that many others are possible, Further, a singlehopper and, a single groove only have been shown but multiple hoppers may be employed, or multiple grooves and a single hopper if the latter provided with guides for maintaining the rollers at right angles to the sides of same and for directing them to the respective grooves.

What is claimed is 1. A machine for grinding rollers comprising in combination. a grinding member,

a guiding device adapted to present the rollers to the face of the grinding maxnbcr, and

means for mixing the rollers in file order oni while maint :tining them at right angles to their line of travel. I

2. machine for grinding rollers eornprising in combination grinding member, a guiding device adapted. to present the roll.- ers to the face of the grinding member, transferring device adapted to hold the rollers at right angles to theirlino ,oftravel, and means located in the transferring device for mixing the rollers in file order only, while maintaining them at right angles to their line of travel.

3. A machine for grinding rollers cornprising in combination, a grinding member, a guiding device adapted to present the rollers to the face of the grinding member, a transferring device and a device for propolling the rollers located in the transferring device, both transf and propelling devices adapted to hold the rollers at right angles to their line of travel.

4. A ma hine for grinding rollers comprising in combination, a grinding member, aguiding de ice adapted to present the rollers to the face of the grinding member, a transferringdevice, a device for n'iircing the rollers in file. order while maintaining them at right angles to their line of travel, such mixing device located in the t 'ansferring device, and means for propelling the rollers also located in the transierring device and adaptcd also to maintain the rollers at right angles to their line of travel.

5. A machine for grinding rollers compi'ising' in combination a grinding member, guiding device adapted to present the rollcrs to the -face of the grinding member, a transferring de ice, a wheel in the transferring device, means for driving said wheel, a cover for same and means for assistingthe pressure of the wheel on the rollers between same and the cover.

-6. A machine for grinding rollers, comprising in combination, a grinding member, a guiding device for the rollers, a transfer- &

ring device, a hopper located in the transferring device, and a ridge formed in a part of said hopper, and rising from the bottom of same for collecting said rollers.

7. A machine for grinding rollers comprising in combination, a grinding member, a guiding device adapted to present the rollers to the face of the grinding member and means for adjusting such part to present the rollers evenly to such face.

8. A machine for grinding rollers com prising in combination, a grinding member, a guiding device adapted to present the rollers to the face of the grinding member, a curved block carrying such guiding device adjustable in a corespondingly curved seat guiding device comprising a curved block adjustable in a corespondingly curved seat, a rib carried by such block, side plates on either side of said rib projecting above same, and means for securing the plates to the rib.

10. A machine for grinding rollers comprising in combination a grinding member, a guiding device adapted to present the rollers to the face of the grinding member, a transferring device, a Wheel located in the transferring device and forming a part of a coverfor said Wheel, means for adjusting the pressure between the cover and the Wheel, means for propelling the Wheel and a hopper located in the transferring device.

.In testimony whereof I have set my hand in the presence of two subscribing Witnesses.

OTTO A-LWIN SCHMIDT. WVit-nesses WILLIAM HOLMES, ARTHUR Gr. GoBELL.

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