US1481242A - Polishing device - Google Patents

Description

im 15, 1924. Mm2

J. J. MUELLER, JR

POLISHING DEVICE Filed OCI'.. 23. 1922 TORNEYS Patented dan. 15, 1924.

irse 'STATES PATENT OFFICE.

JOHN J.'MUELLF| R, JR., 0F OTTAWA, ILLINOIS, ASSIGNOR TO SUPERIOR METAL C0., 0F BETHLEHEM, PENNSYLVANIA, A CORPORATION F PENNSYLVANIA.

PoLIsHING DEVICE.

Application led October 23, 1922. Serial No. 596,288.

To all whom t may concern,

Be it known that I, JOHN J. MUEILER, J r., a citizen of the United States, and a resident of Ottawa, in the county of La Salle and State of Illinois, have invented a new and useful Improvement in Polishing Devices, of which the following is a full, clear,

- and exact description.

E thoroughl My invention relates to improvements in polishing devices, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a device of the character described in which me'tal plates or strips may be cleaned and polished, in a continuous operation and by a single machine.

A further object of my invention is to provide a device of the character described which is practically automatic in o eration, and requ1res a minimum amount o care.

A further object of my invention is to provide a device of the character described in which a continuous metal strip may be cleaned, and polished, and in which means is also provided for obviating the jamming of the strip which might occur from slight irregularities which might be caused by warpage of the strip.

A further object of my invention is to provide a device of the character described which is simple in operation, and which is practical commercially. Other o jects and advantages will appear in the followin specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My' invention is illustrated in the accompan ing drawi'n forming part of this app ication, in w ich- Figure 1 is an enlarged sectional View of the polishing or ,buiing device,

Flgure 2 is an end elevation, partly in section, of the mechanism illustrated in Figure 1.

My resent invention consists in a polishing or buiing device that is fed manually and the construction thereof is more clearly shown in Figures 1 and 2.y 'From an, inspection of Figure 1 it will be seen thatthe device 27 consists in `a base ortion 28 upon whicha metal drum 29 is rotatably mounted by means of uprig'hts 30 secured to the base 28. The drum 29 is formed of a plurality of transverse slots 31 in its pei within the slots 31 prior ripheral wall 32.` 011e edge of the slot 31 is bent toward the center of the drum so that one of the plates, such as the plate 13, may be readily inserted with its end in the slot by moving the plate along the peripheral wall 32 of the drum in the direction of the arrow 33. It is in this manner that the plates 13 have their ends projected to the clamping of the lates. t

eans for elampinlg the plates 13 when the-ir ends are projected within the slots 31 is provided in a cam 34, one end of which is in registration with each of the slots 31, respectively. An extension 35 of the cam 34 is arranged to extend inwardly toward the center of the drum and has a roller 36 rotatably mounted on its outer end. The cam 34 is pivotally mounted to the drum at 37 so that movement of the extension 35 toward the center of the drum will cause the cam to closely engage that portion of the plate 13 that is projected within the slots 31.

The plates 13 are admitted to the polishin or buiiinfr device from the right handv si e as viewed in Figure 1, and a stationary cam 38 is disposed within the 'drum 29 immediately adjacent the right hand peripheral wall of the drum. The cam 38 is a relatively short cam and serves to engage the roller 36 to cause thev adjacent cam 34 to move away from the peripheral wall 29 of tl1e\drum so that the plate 13 may be readily projected into the slot 31. A@ second and relatively long stationa cam 39 is disposed within the drum 29 an is ada ted to engage the roller 36 to cause the ro ler to move toward the center of the drum immediately afterit has been released from engagement with the cam 38. This movement of the roller ,X36 will cause the cam 34 4to move into close engagement with the plate 13 and Ahold the plate against movement as shown this point a third and relatively long stationary cam 42v is disposed withinthe drum 29'. This cam 42, as reference to Figure 1 will show, is arranged to engage only every no j other one of the rollers 36. This is because each alternate roller 36 is disposed in a certain vertical plane, while the remaining rollers are in another vertical plane. The cams 38 and 39 are relatively broad and enUage all ofthe rollers, while the cam 42 on y engages every other roller.

In Figure 1 the cam 34 designated at X is in the act of being released from engagement with the adjacent plate 13, since its roller 36 is one of 'those rollers which are arranged to engage with the cam 42. The plate 13 is therefore free to move away' from the drum 29, which it does of its own weightand b v virtue of a chute 43 that is actuated by a cam wheel 44 of a cam 45 associated with the drum 29. The chute 43 is arranged to move toward the drum 29 at regular intervals and in synchronism with the engagement of the rollers 36 with the cam 42.

An endless belt 46 is provided and is supported upon rollers 47 on the under side of the drum 29 so that the plates 13 will not bend downwardly and become engaged with the base 28 or move out of engagement with the drum when the rollers 36 become released from contact with the cam 39.v

Means for driving the polishing and grinding wheel 41 is provided in a pulley wheel 5,0 on the shaft 510 upon which the grinding wheel 41 is disposed. A drive belt 52 extends downwardly over a pulley wheel 53 disposed on a shaft 54 upon which a gear 55 is carried which is in mesh with a gear V56 associated with the drum 29. A hand crank '57 is also provided for the shaft 57 on which the drum 29 rota-tes.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. With reference to Figure 1 it will be seen that the plates are first placed through a buffer or polisher 27 This device 27 which is clearly shown in Figures 1 and 2 is operated as follows. The plates 13 are manually grasped, one end thereof projected in the direction of the arrow33 into the adjacent slot 31 on the drum 29. At this time, the drum 29 and the grinding, polishing, or buiing wheel is in operation, and the drum 29 is turning in a eounterclockwise direction as viewed in Figure 1. The cam 34 adjacent the operator at this time will be moved away from thei inner wall of the drum 29 and the plate 13 may be easily projected in the slot. The cam 34 will retain this position as long as its associate roller 36 is in contact with the stationary cam 38.

When the aforesaid roller 36 is moved with the drum 29 upwardly Jfor a short distance, it will engage with the stationary cam 39 and the cam 34 in the manner heretofore described, and will engage the plate 13 in close contact with the inner wall of the drum 29. The plate' 13 will then wntinue under the grinding, polishing or bufing Wheel 41 and will make a complete revolution with the drum 29 back to its starting place. At this time, the cam 34, released from engagement with the plate 13 by means of its contact with the stationary cam 38 and the plate 13, may be manually removed. A new plate will be substituted for the plate 13, and the plate 13 will be placed in the next adjacent slot 31. With reference to Figure 1 it will be seen that every alternate cam 34 is provided with a roller 36 which lies in a different vertical plane from the remainder of the rollers. The cam 34, toward which the plate 13 is now projected through the slot 31, is one of these alternate cams which has a roller that engages the stationary cam 38, the stationary cam 39, and also the stationary cam 42. It should be noted at this point that the cam roller 34 previously described, and to which the plate 13 is first brought into contact, does not engage with the cam 42. When the plate 13 which has been reversed, that is, its outer end has been made the inner end relative to the drum 29 which is the point X, its awociate roller 36, which engages with the cam 42 and the cam 34, will be moved out of engagement with the drum 29 and the chute 43, thus permitting the plate 13 to be scooped up by the shaft 14 that is at this time in close enga ement with the drum. The chute 43 is a apted to be moved by means of the cam wheel 44 and the cam 45 on the drum 29 toward the drum at each alternate passing of the slots 31. In short, the device27 is so constructed that the plates 13 may be inserted at the right hand of the device as viewed in Figure 1, and after passing under the grinding, polishing, or buffing wheel, will return to their starting point. The plate 13 may then be removed, reversed, and placed in the next successive slot 31 and at this time it will not be returned to its starting point, but be delivered from the machine at X or fall upon one pair of con, 4

veyor belts 10.

I claim:

1. A device of the character described comprising a polishing and grinding wheel, a rotatably mounted drum having its peripheral walls closely adjacent the peripheral edge of said grinding wheel, clamps associated with said drum for clamping metal plates or the like thereto, and means assof ciated with said clamping members for releasing certain of said clamping members on a portion of the circumference of said drum as said drum is rotated, whereby certain of said plates may remain in said clamping members for a complete revolution of Said drum and the remainder of said plates may remain in said clampin members for` a complete revolution of sai drum.

`2. A device of the character described comprising a polishin and grinding wheel, means for rotating tie Wheel, a drum rotatably mounted in close proximity with said grinding wheel, clamping members carried by said drum for clamping metal -plates or the like thereto, means associated with said clamping members for releasing every second one of said clamping members during one-half the revolution of said drum, whereby plates may be removed from the released clamping members at will during said one-half revolution of the drum, and other means for releasing all of said clamping members during a portion of themrevolution of said drum.

JOHN J. MUELLER, Ja

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