US686018A - Polishing or grinding machine. - Google Patents

Description

E. D. WOODS. POLISHING 0R GRINDING MACHINE.

(Application fild Apr 24, 1899.)

No. 686,0I8. Patented Nov. 5, [90L (No Model.) 7 Sheets-Sheet l.

l\. SD WITNESSES: is B Q INVENTOR ATTORNEYS Tnz nonws PETER: 00,, mo uui'no wAsumwom n. c.

No. 686,0!8. Patented Nov. 5, 19m.

E. n. woons.

POLISHING 0R GRINDING'MACHINE.

(Application filed Apr. 24, 1899.)

(No Model.)

7 Sheets-Sheet 2.

INVENTOR QAMM/ 3 BY No. 686,0l8 Patented Nov. 5, l90l.

E. D. WOODS.

POLISHING 0R GRINDING MACHINE.

(Application filed Apr. 24, 1899.)

(No Model.) 7 Sheets-Sheet 3.

INVENTOR BY KT NW No. 686,0l8. Patented Nov. 5; l90l. E. n. woons.

POLISHING GB GRINDING MACHINE.

(Application filed Apr. 24, 1899.)

(No Model.) 7 SheatsSheet 4.

WITNESSES: INVENTOR E W 63W WW1 W I BY 1 m: NORRIS PETERS c0, PHOTO-LITNO. WASHINGTON, a c

No. 686,0l8. Patented Nov. 5, I90l.

E. n. woons.

POLISHING 0R GRINDING MACHINE.

[Application file" Apr. 24, 1899.)

7 Sheets8heet 5.

(No Model.)-

} INVENTOR WITNESSES! )YW'W BY 4 W we mums PETERS cu. Pnawauma. wAsMmoYcN, o. c.

No. 686,018 Pafented Nov. 5, mm.

E. u. woons. u POLISHING DB GRINDING MACHINE.

(Application file" Apr. 24, 1899.)

7 Sheefs-Sheet 5.

(No Model.)-

INVENTOR WITNESSES: )YWW MM/Ki 1n: Nana's Pan: :0, PHOTO-U780" wAsulusTeu. a. c.

No. 686,0l8. Patented Nov. 5, 1.9m. E. u. woons.

POLISHING 0R GRINDING MACHINE.

(Application filed Apr. 24. 1899.)

(No Model.) 7 Sheets-Sheet 6.

W mm m: scams PETERS 00,. mmaumov, wnsmmsmu. o c

No. 686,0!8. n Patented Nov. 5, I901. E. D. WOODS.

POLISHING 0R GRINDING MAUI-"NIE- (Appiication filed. Apr. 24, 4899.)

(No Model.) 7 Sheets-Sheet 7.

as I I INVENTEIR WITNESEESI UNITED STATES? PATENT OFFICE.

EDWARD D.'WOOD.S, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE WOODS SPECIALTY COMPANY, A CORPORATION OF NEW YORK.

POLISHING OR GRINDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 686,018, dated November 5, 1901.

Application filed April 24, 1899- I WVOODS, of Newark, in the county of Essex,

State of New Jersey, have invented a new and useful Improvement in Polishing or Grinding Machines, of which the following is a specificafl tion.

My invention relates to machines for grind mg or polishing knives or other similar me-i 1o tallic articles, and particularly to machines for grinding or polishing simultaneously u pon.

age to the surface to be ground or polished','i

in which the opposed grinding or polishing 2o surfaces will be yieldinglyand elastically held together during operation; also, to provide in such machines grinding or polishing wheels whose polishing or grinding tires are capable of moving bodily in a radial direction toward or away from each other, so as to adapt themselves to irregularities and variations inform in the article being polished or ground and.

to avoid damage to such article and to the wheels themselves; also, to provide polishing 0 or grinding wheels for such machines that are capable of horizontal adjustment relative to 'each other to suit them for different kinds of.

work and also grinding or polishing wheels whose polishing-surface can be made of dif- 5 ferent forms or shapes to suit difierent kinds of work; also, to provide an improved stand for holding the articles to beground or polished, capable of easy adjustment and control during the grinding or polishing opera- 0 tion and adapted to present the article to be ground or polished to the grinding or polishing surfaces at the will of the operator in any desired position during the grinding or polishing operation, and also to provide im- 5 proved means for feeding to the grinding or polishing machine strips of metal to be ground or polished.

In my improved machine the wheels are made very yielding and elastic. The tire is preferably made so as to yield bodily in a radial direction whenever irregularities or un- Serial No. 714,181- NO morleL) evenness in the surface of the article to be polished is met with, and a very yielding and elastic connection between the wheels is provided.

In machines in which knives or similar articles are ground simultaneously upon both sides between opposing polishing-surtaces it is practically impossible to hold the knife or similar article in the hand between or against the polishing-wheels because of the great heat produced by the friction. By my improved device I provide a stand for holding the articles to be ground or polished which is at all times under the control of the operator and by means of which the article to be ground 'can be presented at any and all times to the grinding-surfaces inany desired position and .can be no'ved'freely inall directions.

In the drawingsaccompanying this speci- 7 0- fication and formingpart hereof, and in which corresponding reference characters in the difierent figures indicate similar parts, I have shown and will now proceed to describe the preferred form of my improved devices.

Figure 1 is a front elevation of a machine embodying my invention. Fig. 2 is a side elevation of a part of the machine and with the stand, omitted viewed from the right as shown in Fig. 1.- Fig. 3 is a vertical crosssection on the line A A of Fig. 1 viewed as shown by the arrow. Fig. 4. is a side elevation of a part of the machine viewed from the left as in Fig. 1. Fig. 5 is a horizontal section through the stand audits appurtenances, taken on the line B B of Fig. lviewed as shown by the arrow. Fig. 6 is an endview of the holder. Fig. '7 is a vertical cross'section taken on the line C C of Fig. 5 viewed as shown by the arrow. Fig. 8 is a plan, and Fig. 9 a side view, of a modified form of parts of my improved devices. Fig. 10 is a vertical section through my improved polishingwheel.

In the drawings herein I have shown my invention as embodied in a polishingmachine, although with proper changes the same can be used as a grinding-machine.

Referring now to the embodiment of my invention as shown in the drawings, 1 is the I00 with two sets of polishing-wheels 2 2, although one of these sets may be dispensed with, if desired. In each set the wheels are arranged one above the other. The upper wheel of each set is mounted upon the shaft 3 and the lower one upon a shaft 4. The wheels are arranged to be driven, preferably, from the same source of power. As shown, they are driven through belt 11 from any suitable source of power, running over pulley 5 on shaft 6, another pulley (not shown) on shaft 6, belt 10, running therefrom to pulley 7 on shaft 4, thus driving the lower polishingwheels on both sides of the machine, and belt 8, running on pulley 7 on shaft4 and over pulley 9 on shaft 3, driving the upper polishingwheels. The polishing-wheels are thus driven by the driving mechanism of the machine from a common source of power and at the same rate. Shafts 3 and 4 are mounted in suitable bearings 13 in the framework of the machine. The bearings of shaft 3 are stationary, thus causing the upper wheels to be immovable vertically. The lower polishing- Wheels, however, are made adjustable vertically and are held normally and preferably against the upper wheels by a yielding or elastic connection in the following manner: Bearings 13 13, carrying shaft 4, are supported upon or are integral with sleeves 14 14, which are free to slide vertically upon posts 15 15, secured tothe framework of the press. Rods 16 are secured by straps 17 to yokes 18, forming one end of a lever 19, pivoted at 20 in the framework of the machine, the yokes encircling the bearings 13 13 of shaft 4 at each side of the machine, as clearly shown in Fig. 3. Rods 16 are secured at their lower ends to treadle-frame 21. A weight 22 is secured at the rear end of lever 19 and by means of notches 23 can be adjusted to vary the weight upon lever 19. Weight 22 tends to keep shaft 4 in its upward position and to press the lower wheels 2 2 against the upper polishing-wheels in a yielding or elastic manner. By pressing upon treadle-frame 21 the operator can at any time separate the wheels from each other.

A yielding or elastic connection is thus made between the upper and the lower polishingwheels. This yielding or elastic character of the contact between the wheels while in operation is further heightened by thecharacter of wheel which I preferably em ploy and which will be presently described.

' In practice the knife or other article to be polished is inserted between the upper and lower polishing-wheels and, is polished or: ground between the two opposing polishing- The yielding and elastic connec-- surfaces.

tion between my improved wheels and the yielding and elastic character of the wheels themselves, as hereinafter described, enable the wheels to easily and readily separate or come closer together, according to the varying thickness or to the irregularities in the surface to be polished or ground, thus thoroughly of the sleeve, as shown in Fig. 1.

polishing or grinding the article itself, and doing this without damage either to the article or to the wheels themselves. In the drawings I have shown a sleeve 24, intended to be used in a bicycle, as undergoing the polishing operation. As the surface of this sleeve is irregular, I construct my polishing-wheel so that its outer face or periphery will be shaped to most effectively reach the parts of the article to be polished-in this case the sleeve. Thus the projection 25 and its vertical face are well adapted for polishing the ends of the sleeve 24 and the sides of the projecting rim 26 Myimproved wheel is made, preferably, with a tire of leather, which can be made into different shapes to suit different classes of work. The construction of the wheel itself will be presently described. In Fig. 1 the upper wheel is shown as polishing one end of sleeve 24, while the lower wheel on one side of the machine is shown as polishing the other end of the sleeve. In order to make the wheels adaptable, so that they can be used for this purpose, I extend one or both of the shafts upon which the wheels are mounted, as shown by the extension of shaft 4, to the right in Fig. 1 and make my improved wheel adjustable horizontally on this shaft, so that it can be moved to the right or to the left to any proper distance and be locked at any point upon the shaft.

The form of wheel which I prefer to use in my improved machine has two sides 27 27, which are provided, respectively, with hubs 28 2S, loosely mounted on shaft 4, for example.

.These hubs are made so that they can slip along the shaft or can be fastened to it by means of screws 29,,which pass through hub 28 and are adapted to project into a groove 30 in shaft 4 or into circular depressions 28, one of which is shown in Fig. 10. By these means the two sides of the wheel can be moved along the shaft and be secured in any position thereon. This arrangement also causes the sides to rotate. with the shaft. The tire 31 is not secured to the sides 'of the wheel, but is free to move bodily and radially outward and inward wholly independent of the sides, with the exception that its outward movement is restrained ata certain predetermined point by one or more stops or flanges 32, connected with the sides. The tire preferably consists of an outer portion 33, an inner portion 34, and a connecting portion 35, the three portions together constituting the tire and being fastened togetherin anysuitable manner, as by glue, or they may be made in one piece. A space 36 is left on each side of the connecting portion between the outer and inner portions, and into these spaces project the stops or retaining-flanges 32 from the two sides of the wheel. These spaces are greater than the thickness of the retainingfianges or stops, thus permitting to the tire a limited radial movement. When the wheel rotates, the tire is thrown outward until '38 is raised or lowered.

the inner portion of the tire presses snugly against the inner face of the retaining-flan ges. In this position, which is the one it assumes while the machine is in operation, as shown in Fig. 10, the tire or a polishing-band sup ported upon it furnishes a yielding elasticcushioned polishing-surface. This surface is of great value where two polishing or grinding wheels are in contact, and the article to be polished is placed between the two and is polished or ground simultaneously upon both sides, as it prevents damage to both the articles to be ground and the wheels themselves and permits the tire of the wheels to move bodily outward or inward, depending upon the varying thicknesses and irregularities of the article to be polished. Myimproved devices are not limited to yielding tires which are caused to yield bodily in the manner shown in the drawings herein, as any wheels the tires of which are bodily yielding, provided they are snfficiently elastic, will answer the purpose.

Where knives or similar metallic articles are being ground or polished simultaneously upon both sides between opposing polishingwheels, it has been found impossible in practice, because of the heat produced, to hold the knife orother metallic article in the hand. For this reason a stand or holder for holding and guiding the tool is necessary in machines of this character. I will now proceed to explain the preferred form of my improved stand for this purpose.

The stand is composed of a suitable base 37, having a cylindrical opening in its interior suitably screw-threaded and adapted to engage with the screw-threads of a screw-shaft 38. A hand-wheel 39 is mounted uponthe standard and is provided at its center with nut (notshown) for engaging the screwthreadsofscrew-shaft38. Thenutandhand- Wheel 39 are in the well-known manner immovable vertically. turned one way or the other the'screw-shaft This shaft carries a frame 40, which is provided with ways 41, shown as rods, upon which a movable carriage 42 is adapted to slide, the carriage having sleeves 43 encircling the sliding ways 41 .The carria e is moved horizontall one wa or the other along ways 41 by means of a lever 44, fulcrumed at 45 upon screw-shaft 38 and having a forked end 47, surrounding and engaging with a pin 46, projecting downward from carriage 42. 48 48 are stops upon ways 41, that by means of their screws 49 49 can be adjusted at any desired points along one or both of the ways to limit the travel of carriage 42. Through a cylindrical opening 50 in carriage 42 passes a holder-rod 51, having a hand-wheel 52 at one end and at. its other end being screw-threaded, as at 53, to engage with screw-threads in sleeve 54, forming a part of rod 51, frictionally mounted thereon. By turning hand-wheel 52 one way or the other holder-rod 51 can be rotated. Holder- Accordingly as it is rod 51 can also be moved inward or outward at right angles to the direction of movement of carriage 42. At the end of holder-rod 51 I provide a holder for holding knives or other articles to be ground or polished. This holder may be of any desired shape or construction. Preferably I make it with a part adapted to spread and to cause theholde'r to engage with and grip the article to be ground or polished. In the form shown in Fig. 5 the holder consists of a cylindrical shell 55, forming part of or secured to sleeve 54, cut away partially at one end,-as at 56, so as to form spring or extensible sections 57. Upon the end of holderrod 51 is a conical or wedge-shaped device 58. The end of holder-rod 51 projects into the cylindrical interior of shell 55, and when rod 51 is pulled to the right and when wheel 52 is rotated in one direction pin 54 in sleeve 54 strikes against one side of part- 42 of the carriage, and sleeve 54 and holder 55 are held fixed, while pin 54 continues to rotate until the wedge-shaped end 58 forces open or spreads the spring or extensible sections 57, thus causing the holder 55 to engage with and grip the sleeve 24, which had previously been placed over holder 55 and which is to be ground or polished in the machine. In this ticle to be polished. This grip is released by rotating wheel 52 in the opposite direction, whereupon pin 54 strikes against the opposite face of part 42 and withdraws wedge '58 from contact with sections 57. By means of hand-wheel 39, lever 44, rod 51, and its handwheel 52 the operator can at all times during the polishing or grinding operation maintain complete control of the movements of the article to beground and can present such article to the grinding-surfaces at any desired point and in any desired position.

, In Figs. 8 and 9 I have shown a modified form of the. holder adapted for holding the blades of knives, for example. In this case the holder consists of two jaws 60, each pivoted at 60 to the'end part 62 of rod 51. A spring 61 tends normally to withdraw the jaws from each other. These'jaws are recessed at their ends in any suitable manner to receive the end of a knife-blade 63 or other similar article. The sleeve 54 has a wedgeshaped end 58 and is interiorly screw-threaded to engage with screw-threads 53 onfrod 51. When it is desired to grip blade 63, handwheel 52 is rotated in onedirection until one of the pins 54 upon sleeve 54 strikes against one of the sleeves 43 of carriage 42, which drawing jaws from contact with wedge 58 and permitting blade 63 to be withdrawn from the jaws.

In Figs. 1 and 4: I have shown my improved devices for feeding long metallic strips between the polishing or grinding wheels for the purpose of polishing or grinding them. These devices are as follows: 64 and 65 are two rolls for feeding the strips to the polishing-wheels. These rolls are arranged one above the other on shafts 66 and 67, respectively, which shafts are mounted in hearings in brackets 68. The bearings of shaft 66 are immovable vertically in brackets 68, while the bearings of shaft 67 have a slight vertical play in said brackets, being yieldingly pressed downward by spring 69. A set-screw 7O enables the spring to be adjusted to suit the work in hand. On the end of shaft 66 is a small spur gear-wheel 71, which meshes with a larger spur gear-wheel 72, mounted on a shaft 73, supported in bearings 74 on the framework of the press. Shaft 67 carries at its end small spurgear-wheel 74 ,which meshes with larger spur gear-wheel 75. The latter gear-wheel meshes with gear-wheel 72. Shaft 73 is driven by belt 76 running over the pulley 77 on shaft 73 and pulley 78 on shaft 3. Rolls 64. and 65 are thus driven by the driving mechanism of the machine and feed the strips inward toward the polishing-wheels, the lateral play of shaft 67, controlled by setscrew 70, permitting the rolls to be used on strips of varying thicknesses.

Many modifications may be made in the form of the devices shown in the drawings Without departing from my invention. Thus the form of the tire may be varied. For example, it is not essential that the tire itself be the polishing-surface, as it may carry the polishing-surface in the shape of a removable belt in any well-known manner, nor is it essential that the lower polishing-Wheel be the one adjustable vertically, as either one or both Wheels may be made adjustable in this direction, if desired. Horizontal adjustability with one or more of the polishing-wheels may be accomplished in other ways than that shown in the drawings. Either one or both of the polishing-Wheels may be made with its tire movable bodily in a radial direction, and such a bodily radial movement of the tire may be accomplished in other ways than that shown in the drawings. Other modifications may also be made without departing from my invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. A stand for holding articles to be ground or polished in a grinding or polishing machine, consisting of a suitable base, a frame movable vertically upon the base, means for moving-it vertically thereon and for-locking it thereon, a movable carriage mounted upon ways connected with said frame and adapted to move horizontally thereon, means, under esaoie the control of the operator at all times during the operation of the machine, for moving said carriage along said Ways, a holder-rod adjustably mounted upon the carriage and adapted to be moved thereon at will at an angle to the direction of movement of the carriage, and a holder for holding the articles to be ground or polished, whereby the articles to be ground or polished may, at the will of the operator, be presented to the grinding or polishing surfaces in any desired position and may be moved as desired.

2. A stand for holding articles to be ground or polished in a grinding or polishing machine, consisting of a suitable base, a movable carriage mounted upon ways connected with said base and adapted to move horizontally thereon, a lever, under the control of the operator at all times during the operation of the machine, fulcrumed upon said stand and adjustably connected with said carriage for mov ing said carriage along said ways, stops upon said ways to limit the movements of the movable carriage, a holder-rod adj ustably mounted upon the carriage and adapted to be moved thereon at will at an angle to the direction of movement of the carriage, and a holder for holding articles to be ground or polished, whereby the articles to be ground or polished may, at the will of the operator, be presented to the grinding or polishing surfaces in any desired position and may be moved as desired.

3. The combination in a polishing or grinding machine of a stand for holding articles to be ground or polished, consisting of a suitable base and movable carriage mounted upon ways connected with said base and adapted to move horizontally thereon, means, under the control of the operator at all times during the operation of the machine, for moving said carriage along said ways, a holder-rod adj ustably mounted in a sleeve upon the carriage and adapted to be moved thereon at will at an angle to the direction of movement of the carriage, a movable sleeve frictionally mounted thereon, a projection therefrom, screwthreads upon a portion of the exterior of the holder-rod and screw-threads upon the interior of the sleeve adapted to mesh together, means for rotating the holder-rod, a holder for holding the articles to be ground or p01 ished having a part adapted to spread to cause the holder to engage with and grip the article to be ground or polished, a wedge-shaped device connected with the holder-rod adapted to engage with the holder to spread it, whereby upon the rotation of the holder-rod in one direction the projection from the sleeve thereon will strike a portion of the movable carriage and cause the wedge-shaped device to engage with and to spread the holder to cause the latter to grip the article to be ground or polished, and when the holder-rod is rotated in the other direction the projection from the sleeve will strike another portion of the movable carriage and will Withdraw the wedgeshaped device from engagement with the holder to release the article to be ground or polished, substantially as set forth.

4. A stand for holding articles to be ground orpolishedinagrindingorpolishingmachine, consisting of a suitable base, a movable carriage mounted upon Ways connected With said base and adapted to move horizontally thereon, means, under the control of the operator at all times during the operation of the machine, for moving said carriage along said Ways, a holder-rod adjustably mounted upon the carriage and adapted to be moved thereon at will at an angle to the direction of movement of the carriage, and having a Wedge-shaped portion adapted to engage With a part of the holder, and a holder for holding articles to be ground or polished having a part adapted to be spread when engaged by the wedge-shaped portion of the holder-rod, whereby the article to be ground or polished Will be securely gripped or held by the holder and whereby it may, at the will of the operator, be presented to the grinding or polishing surfaces in any desired position.

5. A holder for holding articles to be ground or polished having a part comprised of springs or extensible sections, a Wedge-shaped device adapted to engage with the said sections to spread them and to cause them to grip the articles to be ground or polished.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD D. WOODS.

Witnesses:

J ULIUS VAN WAGENEN, HENRY T. SEYMOUR.

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