US2460570A - Grinding machine - Google Patents

Description

Feb. 1, 1949. c ucc 2,460,570

GRINDING MACHINE Filed April 21, 1945 9 Sheets-Sheet l Q &

INVENTOR. fL/A/r 0/! 72/00/ P. CATUCCI Feb. 1, 1949.

GRINDING MACHINE 9 Sheets-Sheet 2 Filed April 21, 1945 IN VEN TOR. f; m/ r 04 7000/ ATTQF/VEY Feb. 1, 1949. Q P. cATuccl 2,460,570

GRINDING MACHINE Filed April 21, 1945 9 Sheets-Sheet 3 fi/Nr 0472/00/ 7 AUYUE EY Feb. 1, 1949. P. cATuccl GRINDING MACHINE 9 Sheets-Sheet 5 Filed April 21, 1945 0 M v1/ v M Hllh.

Feb. 1, 1949. P. CATUCCI GRINDING MACHINE 9 Sheets-Sheet 6 Filed April 21, 1945 IN VEN TOR. v fi/A/y- 6472/00/ MAW 1949'; P. CATUCCI GRINDING MACHINE 9 Sheets-Sheet 7 Filed April 21, 1945 INVENTOR. fi/NY 6%72/00/ Feb. 1, 1949. P. cATuccl GRINDING MACHINE Filed April 21, 1945 9 Sheets-Sheet 8 [WE/117a? I f2 //v) 634 7000/ Mam Feb. 1, 1949. v c ucc 2,460,570

GRINDING MACHINE Patented Feb. 1, 1949 GRINDING MACHINE Pliny Catucci, Kearny, N. J assignor to William Crabb & Company, Newark, N. J a corporation of New Jersey Application April 21, 1945, Serial No. 589,511

2 Claims. (01. 51 -79) This invention relates to a device for sharpening or pointing short rods or pieces of wire. It relates more specifically to an automatic grinding machine of this character which is particularly suitable for sharpening phonograph needles very rapidly and uniformly. I

In carrying out the invention the blanks are not necessarily fed to the machine at a uniform rate but the extent of grinding each one is cor- 7 rest and the manner of grinding is controllable.

The invention may be understood from the description in connection with the accompanying drawings in which Fig. 1 is a plan view taken perpendicularly to the base of the machine;

Fig. 2 is a side view partly broken away;

Fig. 3 is a side view from the opposite direction to Fig. 2;

Fig. 4 is a section along line 4-4 of Fig. 1 with parts removed; I

Fig. 5 is a section along the line 5-5 of Fig. 1;

Fig. 6 is a section along the line 6-6 of Fig. 1;

Fig. 7 is a section through some of the shafts of a machine showing gears;

Fig. 8 is a section along the line 8-8 of Fig. 1;

Fig. 9 is a section along the line 9--9 of Fig. 1;

Fig. 10 is a section along the line Ill-l of Fig. 1;

Fig. 11 is a plan View of portions of the device shown in Figs. to 10, being on an enlarged scale, and

Figs. 12 and 13 are sections showing some details on greatly enlarged scale.

Reference character I indicates a floor or other support to which the base 2 of the machine is attached by means of lugs 3 and bolts 4.

A driving motor 5 is provided with grooved pulleys 6 and I on the shaft of the motor, pulley 6 being smaller than the pulley 1. A belt 8 extends from pulley 1 to a pulley 9 (Figs. 1, 3 and 4) attached to the transverse shaft l0 which has a shoulder l l and a clamping hub ll' (Figs. 4

and 11).

The belt I2 extends from the pulleyfi to a pulley l3 that is attached to the transverse shaft M, this belt passing under idler pulley l5 that is adjustable for tightening this belt. The shaft [4 is journalled in bearings 16 that are attached to one end I! of the machine; this shaft being kept in place by means of collars l8 and set screws l9. A pulley 20 is attached to the other end of the shaft [4 with a belt 2! extending from this pulley and passing under a fixed pulley 22 and an adjustable pulley 23, adjustable as shown at 23'. and around pulley. 24 on shaft 25 which is journalled in an adjustable yoke 26 that is pivoted in bearings 2'! inc. bracket 28 that is attached to the frame 2 of the machine. The shaft 25 carries a friction wheel 39. This wheel and the pulley 24 are secured to the shaft 25 by collars 3i and 32 respectively that are provided with set screws (Fig. 2). Friction material 33 is provided around the periphery of wheel 31?. A lever 35 that i pivoted on the bracket 23 is adapted to be pressed against a projection 35 on yoke 26 to swing the wheel 30 away from contact with the wheel 31 when desired. A spring 38 normally keeps wheels 33 and 37 in contact. The Wheel 37 (Figs. 1, 2 and 6) is attached to shaft 39 by set screws 40 and is provided with friction Wear material 4! on the outside with which the friction material 33 on wheel 36 can be brought into con tact. A housing 43 (Figs. 1, 2, 3 and 6) which serves as a bearing for shaft 39 is attached to the frame 2 of the machine. A bevel gear id (Fig. 6) is screwed to the end of the shaft 39 and meshes with a bevel gear 45 within the housing 46 which has a removable cover 41. The shaft 39 is journ-alled in bearings 48 and 49 and is kept in place by collars 5i! and 5|.

The bevel gear 45 in housing 45 (Fig. 9) is axially aligned with and. is securely connected to gears 5| and 52. These three gears are carried byshaft 53 that is journalled in bearings 54 and 55 in opposite walls of the housing 46. Ihe gear 5| meshes with a gear 56 on shaft 51 that is kept in place by an adjustable set screw 53 and'a collar 59. The shaft 51 extends into the housing 6 as shown at 6! in Figs. 8 and 9. The member has a projecting lip or flange 56' (Fig. 8).

The gear 52 (Fig. 9) on shaft 53 meshes with gear =52 on shaft '63 that is kept in place by set screws 54 and collar 65. This shaft 63 also extends into the casing 65 as shown at 56. Removable screws '67 retain the cover of casing G5 in place. The portions GI and 5B of shafts 57 and B3 are provided with spiral guides 69 and 10 (Figs. 8, 9 and 11) that are rectangular in cross-section, these guides being adapted to align the pieces of wire or the like that are to be correctly fed to the grinder 82.

A supporting and guide plate 72 (Figs. 4 and 9) for wire 01' the like to be sharpened or pointed, has an arcuate portion l3 with a radius of curvaturecorresponding to the outer surface of the needle-holding and rotating wheel 15 which is mounted on shaft '56 by which it isrotated. The wheel 15 has a middle portion (Figs.9 and 12) of rubber or similar material'that is kept in place 3 between metal discs 18 and 19 that may be clamped together by bolts 85.

The grinding wheel 32 (Figs. 4, 9, l1 and 12) is mounted on the driving shaft Ill and has a transversely curved grinding surface 83 (Fig. 4).

Housings 85 and 85 (Fig. 4) are provided for ball bearings 81 for shaft It. These housings are adjustable to move the shaft It, grinding wheel 82 and housings 85 and 86, the housings 85 and 85 being moved laterally and the wheel 82 radially. Guide supports 88 and 89 are provided for the bearings 85 and 85. Worm gears 92.. and 53 are hand-operated by a screw threaded rod 94 having a handle 94' for positioningthe shaft It laterally and the wheel 82 radially. A worm gear 85 on shaft I5 meshes with the gear 95 on transverse shaft 91, the gears 55 and 58 being. enclosed in a housing 38 in which bearings such as bearing 99 are provided. The shaft 91 extends through the housings 98 and IE6 (Figs. 1, 4 and 5) and is journalled in bearing I51 of housing 95 and in the lower end of link I52 (Figs. 1 and 5) that is pivoted at I83 on arm IM. A support I55 (Figs. 1 and 5) is provided for the arm I04. This support Iilfiis provided with a rib IE1 along which arm I94 islongitudinally adjustable. The arm ltd is held in adjusted position by bolt 68. A tongue and, groove connection H19 connects'the support I56 with the frame Iltl of the machine so that it is adjustable longitudinally of the machine.

A bevel gear H2010. shaft H3 is driven, by" gear {I4 onshaft91 which is journalled in a bearing in housing I at.

An adjustable housing I I5 is supported by the support H5, and is adjustable to different heights by means of thelbolt Ill. Bearings We are provided inv the housing I I5 between which the worm gear IZl, which is keyed to shaft H3, is mount ed. The gear I22 is provided on shaft with which the worm gear it engages.

Adjustable cone-shapedbearings (Figs. 1 and 2) are provided for the. shaft 15 in carriers I26 which are kept in adjusted positions by bolts I21 in said carriers. The bearings I24 are adjustable in height on brackets Itii that are in turn supported on the base of the machine. Plates I2I with holes for passage of the bearing I24 are attached by bolts I32 to the supports I25. Transverse U-shaped openings I35 are provided in the upper ends of the brackets 13st to accommediate the support I25. Bolts I135 with lock nuts I31 thereon limit the lower p s tions of the supportlflfi and bolts I33 with heads under plates i39 are holdin place by screws. thatr pass through openingsin the transvers plates Mo and keep the supports I25 in place so that they do not get out of adjustment. 7

A feed plate I44. (Figs. 1, 8 and 11) has parallel grooves M5 inits upper surface, these grooves terminating along the line I 45, with the upper surface of the remainder I41 of plate Hit made srnooth and aligned with the outer surface of the roller 65 and the center line of the roller 6! (Fig.8);

A lip or extension 548 of casing 6%) almost touches the spiral guide It on roller 65. The plate I (Figs. 2 and 8) with dove-tail edges I5! receives the screw bolts 51 so that this portion of the device can be adjustedlongitudinally to different distances from thewheel 15 and can be tightened in piace bymeansof the bevel'strip I5'2 andscrews153. Itcan 'be moved along the base member I55 to'which the plate I5fi, upon which the feed plate I44 rests, is attached by therefore then free to be moved laterally or 4 screw bolts I51. The feed plate M4 is attached to the plate I56 by screw bolts I58.

Wires I60, or similar devices such as phonograph needles to be ground or sharpened, are indicated in Figs. 8-13. A knob I64 (Figs. 12, 1 and 4) on an adjustable screw I65 is journalled in the bearing IE6 in plate I61 which is anchored to the frame 2 of the machine and is prevented from moving longitudinally by collars E58 and IE9. It carries a graduated disk I1!) for adjustment purposes. ,The threaded end I1I of the screw I55 extends into a threaded lug I12 on plate I13 that is provided with a dove-tail shaped passageway I14 (Fig. 4) along its lower side in which the dove -tail shaped portion I15 of support I15 engages. The support I15 rests upon the base 2 of the machine. An opening I18 (Fig. 12) isprovided in the plate I13. This opening receives a short metal nipple I19 to which a flexible hose or conduit I is attached. A shield I8I is attached to the plate I13 in front of the grinding wheel I82 above the opening I18.

A supporting member I84 (Figs. 12 and 13) is provided with an offset extension I 86 for the needles I 55 while they are being ground. The memoer 655 is provided with a shoulder I85 at the inner end of the extension I86. The upper surface of the extension I86 carries the curved portion 1,3 of the guide plate 12 (Figs. 4, 9 and 1 2) for the needles or the like I55 While they are b in ground- A chute I38 (Figs. 1, 2, 3 and 4) is provided for the finished or round ne dles.- t has an p nin i 89 along its upper side near the, edge of the plate t to receivet c g ound e dle and which .ext nd u wardly s fi cient y to lear the mach n The operation is as follows: 7

The motor 5 withpulleys 5, and 1 is started. The shaft IE carrying grinding wheel v32 (Figs. 4 and 9) isadjusted to the proper height .or verticalposition with respect to Wheel 15by turning the handle .54 ofshaft 56 (Figs. 3 and 2). The grinding wheel 8Zis also adjusted laterally of the. wheel 15. (Fig. 12) by turning knob I54 so as to obtain the Y proper taper on the ground points ofthewires or needleslfifl. The graduations I10, with a line or marker on plate I51, enable exact adjustmentto be made.

Theneedles or. wires 1.5.5 to be ground fed to the plate M4 (Figs. 8 and 11) so that they slide downwardly along the parallel groevesi iii in this plate until the ends-to be ground rest radially against the side of the extending end an (Figs. 3, .9 and 11) or shaft n betweenconvolutions ofrthe spiral guide 69, with an intermediate portionnof each needle resting on the extending portion 6.5 of shaft 53 between convolue tions of the spiral guide 1.5. The needles are then beyond the lQWflr endsl le oi thev ribs or grooves {45 (Figs. 1,8 and'll) so, that they lie upon the smooth surface t ll-of plate I44 and are rallel to the ends 5I and 55st shafts 5'1 53 as shown in Fig. 11.; The spirals, andlsilheep these needles parallel. toeach other and at right an les to th ce te line of the p tion ti o shaft 5?. a v

They are thus movediateraily and arallel to each other to-the .edgeof plate Idd. where. the portion 11 .of rubber or other yielding material on :wheel :1 5 (Figs. 9 and" '12-) rolls-them through the arcuate space between-this wheel and V curved upper surface of plate I13 which is made 7 of hardened weanresist-ing material thus keeping v them aligned and parallel to each other while they are being rolled along this curved surface. During this time the ends that are to be ground or sharpened are brought into contact with the wheel I5 whereupon they enter the chute I88 and are carried outside of the machine.

The knob I64 and micrometer disc I (Fig. 12) on screw I65 enable the operator to adjust the grinding wheel 82 to the exact position needed for the correct amount of sharpening or grinding of the needles I60 and all of them can be automatically shaped exactly alike. It will be clear from Figs. 9 and 11 that the spiral guides 69 and 10 keep the needles I60 parallel to each other and at right angles tothe portion 6| of shaft 51 so that they are properly aligned to be ground when they are carried along the plate I3.

The feeding of the needles can be quickly stopped while the machine is running by pressing downwardly upon the lever 34 (Fig. 1) thereby disengaging the driving wheel 33 from the wheel 31 which drives the gear 44 (Fig. 9) which in turn drives the shaft 51, 63 and spirals 69, I0. Even when no needles are being ground, the wheels I5 and 82 (Figs. 12 and 13) do not touch. The abraded material is thrown into the conduit I80 and carried away. The finished needles I60 drop into the open end I89 of conduit I88 and pass out at the right hand end of the machine (Figs. 1, 2 and 4).

The needle holding and. turning wheel I5 is driven from motor 5 by pulley I, belt 8, pulley 9 (Fig. 1), shaft 10 (Fig. 4), Warm 95, worm gear '96, shaft 91, bevel gears H4 and 2 (Fig. 5) in casing I00, shaft H3, worm I2I, worm gear I22 in casing H5 (Figs. 1 and 5) and shaft I6. The grinding wheel 82 (Fig. 4) is also mounted upon and driven by the shaft I0 so that there is a constant rate of rotation of the wheel 82 com- :pared to that of Wheel I5.

fhe rate of feeding the work or articles I to the grinder 82 is not necessarily correlated to the speed of the wheel 82. The parts I60 may be caused to enter the feeding mechanism at any time. When the arm 24 is pushed down to disengage the Wheels 33 and 3'1 or when there is some lost motion between them, no harm is done.

What is claimed is:

1. A grinding machine for sharpening the ends of rods and pieces of wire and the like which comprises a plate having parallel grooves therein for said rods or wire, revoluble spiral guides spaced from said grooves adapted to receive said rods or wire and move them laterally while maintaining them in parallel relation.

2. The device of claim 1 in which one of said guides is adapted to operate as a stop for limiting the longitudinal movement of said rods or wire.

PLINY CATUCCI;

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 3,105 Fairbanks May 26, 1843 248,120 Thompson Oct. 11, 1881 673,047 Dennis et al Apr. 30, 1901 992,859 Davis May 23, 1911 993,981 Grover May 30, 1911 1,060,322 Crabb Apr. 29, 1913 1,531,281 Garbin Mar. 31, 1925 1,532,490 Hunt Apr. 7, 1925 2,397,459 Armbrust Apr. 2, 1946 FOREIGN PATENTS Number Country Date 399,444 Great Britain Oct. 5, 1933

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