US2095501A - Buffing or polishing machine - Google Patents

Description

Oct. 12, 1937. c. o. JOHNSON BUFF'ING OR POLISHING MACHINE Filed May 27, 1936 5 Sheets-Sheet 1 Inventor Attorneys Oct. 12, 1937. c. o. JOHNSON BUFFING OR POLISHING MACHINE 5 Sheets-Sheet 2 Filed May 27, 1956 Inventor C. 0, 705218024 fi uwm A iiomeys c. o. JOHNSON BUFFING OR POLISHING MACHINE Oct. 12, 1937.

5 Sheets-Sheet 5 Filed May 2'7, 19136 Inventor By fimagiih A itorneys -Oct. 12, 1937. c, Q JOHNSON 2,095,501

BUFFING OR POLISHING MACHINE Filed May 27, 1936 5 Sheets-Sheet 4 Invenlor A Home};

5 Sheets-Sheet 5 l. J F M L 12 2 2, 1. I U v I r I y B Oct. 12, 1937. c. o. JOHNSON BUFFING OR POLI SHING MACHINE Filed May 27, 1936 In van [or Patented Oct. 12, 1937 UNITED STATES PATENT OFFICE 2,095,501 BUFFING OR POLISHING MACHINE Carl 0. Johnson, Springville, N. Y., assignor to Ralph B. Waite, Springville, N. Y.

Application May 27, 1936, Serial No. 82,103

Claims. (01. 51--84) advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:- Figure 1 is a front elevational view of the machine with certainparts removed. I

Figure 2 is a transverse sectional view taken substantially on the line 22 ofFigure 1.

Figure 3 isa, detail plan view of the work holder. 7

Figure 4 is a front elevational view of the work holder.

Figure 5 is a transverse sectional view taken' substantially on the line 55 of Figure 3. 9 Figure-6 is a fragmentary plan view showing a valve actuating mechanism and associated parts and Figure 7 is a View partly in section andpartly in elevation showing the valve and actuating means therefor. Referringfto the drawings by referenoe numerals, the machine comprises generally a table I supported by legs or standards 2.- Rising from the table I are upright bearing 30 members 3 and said bearing members 3 support therebetween a rocker shaft 4 to which are splined or otherwise secured arms 5 and 6. Sup

ported by the arms 5 and 6 is a polishing roll I, the shaft of which is journaled in the free ends 35 of the arms 5 and 6.

Arm 6 is extended, as best shown in Figure 1, to form a bracket to which an electric motor 8 is secured; the" shaft of the motor forming an extension of, or being directly connected to; the shaft 9 of the roll I.

Similarly the shaft I0 of asecond and lower roll I I' is journaled in thefree ends of arms I2 and I3 splined or otherwise" secured to a rocker shaft I4 mounted. below shaft 4 in the bearing members 3. Arm I2'is extended to form a bracket'to which an electric motor I5 is secured, the shaft of" motor I5 forming an ext'ension of, or being'directly connected to, shaft I0 of roll II. Thus each roll "I and H is independently driven 30 byits motor and directly from its motor.

Shafts 4 and I4 are adapted tobe simultaneously 'rockedfin opposite directions by means of a tur rr buckle I6, theopp'dSitely threaded portions of which engage in nuts I'TBlld' I8 piv'oted 55 respectivelyin-the free" ends of arms I9and which are splined respectively to shafts 4 and I4. As shown in Figure 2 shafts 4 and I4 are geared together as by segmental gears 2I and 22 respectively secured to saidshafts so that rotation of turn buckle I6 will result in simultaneously rocking the shafts 4 and I4 in equal amounts but in opposite directions, thus swinging the rolls 2 and 3 toward or from each other to adjust their spacing for work of different thick ness.

Secured transversely to the top I are fixed guides 23 formed'on one side with ribs that are received in ways 24 provided at respective opposite end edges of a slide 25. Slide 25 is thus mounted on the top I for reciprocationtransversely with respect to the axis of the rollers I and II and for reciprocating the slide 25 there is suitably mounted beneath the top I a cylinder 26 in which operates a piston the rod 21 of which is suitably secured to a bracket 28 depending from one end of the slide 25 as best shown in Figures 1 and 2.

For reciprocating the piston within the cylinder 26 there is suitably mounted on the extended part 29 of arm I2 which forms the bracket'for the motor I5 a liquid pump 30 which is driven from'the' motor I5 through the medium of a belt and drive means 3I. Pump 30 serves to draw liquid from a liquid chamber 32 provided in one of the stands 2 through a pipe 33 that leads from the chamber 32 to the intake side of the pump. Fromtheoutletside of the pump there extends piping 34 which is connected with one side of the casing of a valve assembly 36. Valve assembly 36 has one side thereof connected through the medium of piping 37 with one end of piston 26 While the other side of the casing ,of valve 36 is connected in a similarmanner with the relatively opposite end of the cylinder 26 so that liquid under pressure will first be supplied to one end of cylinder 26 for moving the piston therein in one direction, and then into the cylinder 26 at the opposite end thereof for moving the piston in a reverse direction for reciprocating the slide 25. For bleeding the ends 7 of the cylinder in alternation and for directing the liquid exhausting from the ends of the cylinders back to the chamber 34 there is provided a return pipe connection 38 between the valve 36 and the chamber 32. 7

Also for bypassing the liquid from the pump back to the chamber 32 before the liquid reaches the valve 36 there is provided a suitable by-path pipe connection 39 between pipe 34 and chamber 32 equipped with a valve 40.

For operating the valve 31 in a manner to control the operation of the piston within the cylinder 36 for reciprocating the slide 25 the crank 4| of the stem of valve 31 has a pin and slot connection 42 with a lever 43 which is pivoted at one end as at 44.

Suitably mounted on one side of the slide 25 are bearings 45 in which is journaled the respective opposite ends of a shaft 46 that at one end is equipped with a hand wheel 41 and threads 48 cooperable with a fixed nut 49 on an adjacent bracket 45 so that as the hand wheel 41 is rotated in a proper direction the shaft 46 may be fed for passing the free end thereof into the other of the bearings 45 or said shaft may be retracted for Withdrawing the shaft axially through the bearings 45.

Shaft or rod 46 is provided with two series of relatively spaced openings 5| through the medium of which and pins 52 top blocks 58 are secured at the desired relative adjustment on the rod 46. The blocks .58 are arranged so as to engage the lever 43 in alternation incidental to a reciprocation of the slide 25 to thereby operate the valve 31 in a manner to control the supply of liquid under pressure to cylinder 26 for reciprocating the piston in said cylinder.

For normally holding the valve 31 in a neutral position there is provided a spring 53 which at one end is secured at the connection 42 between the valve crank 4| and lever 43 and which at its opposite end is provided to engage in a selected notch of a series of notches provided in the upstanding fiange of a plate 54 suitably secured to the top of the slide 25. (See Figures 6 and 7.)

On the top thereof the slide 25 is provided with apertured lugs 55 arranged in pairs and having a sliding fit within the apertures of each pair of lugs 55 is a rod 56. Rods 56 extend transversely to the line of movement of the slide 25. and secured to the respective opposite ends of the respective rods 56 are lugs 51 provided on the underside of a slide 58 which reciprocates relative to the slide 25 and in a path parallel to the rollers 1 and II or at right angles to the path of travel of the slide 25. V

For reciprocating the slide 58 there is provided on the table I and extending from one edge thereof a bracket 59 to which is secured an electric motor 68. Suitably connected with the shaft of the motor 68 through the medium of reduction gearing arranged within a gear case 6| mounted on one side of the casing of the motor 68 is an eccentric 62 to which is connected one end of a pitman rod 63 that in turn is pivotally connected as at 64 with a bracket arm 65 that is secured to one of the lugs 51 as shown in Figure 1.

Secured to and rising from the slide 58 are standards 66 to the upper edges of which are pivoted as at 61, and as shown in Figure 4, channel members 68. For securing the members 68 at the desired angular adjustment relative to the upper edges of the standards 66 are adjusting screws 69.

Bolted or otherwise secured as at 18 to the members 60 are plates 1| on which rest the respective oppositeends of a work holding bar 12 disposed there-between, and the bar 12 is supported for sliding movement laterally toward or away from the rolls 1 and II.

For guiding the bar" as it is adjusted relative to the rolls there are provided guide arms 13 that extend froma member 14 that is disposed between and connects the free ends of the members 68. At one edge thereof the work holding bar 12 is provided with a depending skirt 14 provided with slots to accommodate the guide arms 13. Also extending from the skirt 14 are handle extensions 15 which are used tofacilitate the sliding of the work holding plates 12 toward or away from the rolls.

To maintain the respective opposite end edges of the bar 12 in sliding contact with the plates 1| there are secured by bolts or the like 11 spring clips 18 that have portions overlying the plates 1| and the adjacent ends of the work holding plate 12 as clearly shown in Figures 3 and 4 and also in Figure 5.

Adjacent the free edge thereof the work holding plate 12 has a plurality of pins 19 projecting upwardly therefrom to engage in the usual rivet openings provided in the handle ends of knife blades 88.

For retaining said ends of the blades 88 engaged with the pins 19 there is provided an apertured clamping bar 8| the apertures of which accommodate the upper ends of the pins 19. For retaining the bar 8| in clamping position relative to the plate 12 to confine the handle ends of the knives 88 on the pins 19 there are provided a pair of spring fingers 82 which have ends yieldably urged into engagement with the bar 8| through the medium of screws 83 and springs 84 disposed about the screws between the clamping fingers 82 and the plate 12.

Also the clamping fingers 82 have portions resting on angular brackets 84 suitably mounted on the flange 16 of plate 12 and which brackets have upstanding ends upon which intermediate portions of the clamping fingers 82 rest so that by screwing home the screws 83 said fingers 82 will be placed under tension for securely retaining the clamping plate 8| in position.

From the above it will be seen that by adjusting the members 68 angularly with respect to the upper edges of the standards 66 the blades 88 may be properly positioned in the bight or space between the rotating rolls 1 and II to insure proper contact of the rolls with the knife blades to insure thorough polishing of the blades on both sides thereof. It will also be seen in this connection that by properly adjusting the angular position of the members 68 the blades may be so positioned as to contact with but one roll to polish or bufi a single surface of each knife blade.

As is thought apparent from the foregoing, the knife blades or other work carried by the work support will be reciprocated in the bite of the rotating rolls 1 and H by the reciprocation of slide 25, and that simultaneous reciprocation parallel to the rolls is imparted to the work by slide 58.

It is thought that a clear understanding of the invention, its operation and utility will be apparent to those skilled in the art without a more detailed description.

Having thus described the invention what is claimed as new is:--

1. In a buifing and polishing machine, a table, a pair of rolls mounted on the table, means connected to the shaft of each roll to drive it independently of the other, means connected with the rolls for adjusting their spacing to various thicknesses of work, a slide mounted on the table for reciprocation transversely to the axis of the rolls, a second slide mounted on the first slide for reciprocation parallel to the axis of the rolls, a work support carriedby the second slide, hydraulic means connected with the first slide for reciprocatingit, an electric motor mounted on the table, and an operating connection between said motor and the second slide for reciprocating the latter.

2. A bufiing and polishing machine comprising a table, a pair of rolls mounted on the table, means connected to the shaft of each roll for driving it independently of the other, means connected with the rolls for adjusting the same toward or away from each other for adjusting their spacing to various thicknesses of work, a slide mounted on the table for reciprocation transverse to the axis of the rolls, hydraulic means connected with said slide for reciprocating it, a second slide mounted on the first slide for reciprocation parallel to the axes of the rolls, a motor mounted on the table, means operatively connecting the motor with the second slide for reciprocating it, and a work support mounted on the second slide including a pair of standards rising from the second slide, members pivoted to the upper ends or" the standards, means engaged with said members and the standards for securing said members at the desired angular adjustment relative to the upper edges of said standards, a work holding plate supported between said members for'sliding movement thereon toward and away from the rolls, resilient spring devices on said members and yieldably engaging the work holding plate for securing the latter at the desired adjustment, and means on the work holding plate for clamping the work thereto whereby the work may be held in the space between the rolls for contact with both rolls or in contact with a selected one of the rolls, optionally.

3. A buffing and polishing machine comprising a pair of buffing and polishing rolls, means connected with the rolls for driving them, a work support, a slide connected with the work support and mounted for reciprocation parallel to the axes of the rolls, a second slide beneath the first slide and mounted for reciprocation transversely to the axes of the rolls, and hydraulic means for reciprocating the last named slide including a cylinder, a piston mounted for reciprocation in the cylinder and having a rod connected with the last named slide for transmitting movement of the piston to the slide, means for controlling the supply of liquid to the respective opposite ends of the cylinder including a valve, and means connected with the valve and the last named slide for operating the valve in response to the reciprocating movement of the last named slide.

4. A bufling and polishing machine comprising a pair of buifing and polishing rolls, means connected with the rolls for driving them, a work support, a slide connected with the work support and mounted for reciprocation parallel to the axes of the rolls, a second slide beneath the first slide and mounted for reciprocation transversely to the axes of the rolls, and hydraulic means for reciprocating the last named slide including a cylinder, a piston mounted for reciprocationin the cylinder and having a rod connected with the last named slide for transmitting movement of the piston to the slide, means for controlling the supply of liquid to the respective opposite ends of the cylinder including a valve, and means connected with the valve and the last named slide for operating the valve in response-to the reciprocating movement of the last named slide, a prime mover, and means operatively connecting the prime mover with the first named slide for reciprocating the latter.

5. A bufiing and polishing machine comprising a pair of buffing and polishing rolls, means to drive said rolls, a slide mounted for reciprocation transversely to the axes of the rolls, a second slide mounted on thefirst slideforreciprocation parallel to the axes of the rolls, a work support carried by the second slide, and means for reciprocating the slides simultaneously including hydraulic means connected with the first slide and characterized by a control valve arranged adjacent to the first slide and means on said valve and on the first slide for actuating the valve as the slide approaches the limit of its movement in either direction.

CARL O. JOHNSON.

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