US428195A - Machine for grinding and polishing glassware - Google Patents

Description

(N M d 1.)

o e H. 0. Woon av A. J. SNOBURGBR.

MAHINB FOR GRINDING AND POLISHNG GLASSWARE.

Patented May 2-0, 1890.

Unirnn STATES PATENT. OFFICE..

IIARRXT C. WOOD AND ANDREW J. SNOBURGER, OF NEW BRIGHTON,

PENNSYLVANIA.

.MACHINE FOR GRINDING AND POLISHING GLASSWARE.

SPECIFICATION forming part of Letters Patent No. 428,195, dated May 20, 1890.

Application filed July 19, 1888. Serial No. 280,405. (No model.)

To' all whom it may concern: has a bearing in the tubular casing E, which A Be it known that we, HARRY C. Woon and is secured in standard S. This tubular cas- ANDREw J. SNOBURGER, of New Brighton, in ing contains two metallic disks E3, between in the county of Beaver and State of Pennwhich is arranged a spiral spring E2. The 5 sylvania, have invented new and useful Irnrear end of shaft O is pointed and bears 55 provenients in Machines for Grinding and against the forward disk E3, while the rear Polishing' Glassware; and we do hereby dedisk E3 is adjustable by .means of a thumbclare the following` to be a full, clear, and eX- screw E', which passes through the cap of the act description of saidinvention,reference betubular casing. By this means the chuckto ing had to the accompanying drawings, and shaft, with its tumbler, is forced toward the 6o to the letters of reference marked thereon, grinding or polishing wheel with an adjustwhich form a part of this specification. able yielding pressure.

Our invention-relates to improvements in Upon each shaft O is secured a frictionmachines for grinding and polishing the botpulley D, and a` lever L, which may be, as

i 5 toms of glass tumblers and similar articles; shown, fulcrumed upon the bearing S', has 65 and the objects thereof are to provide means its short end curved toward the side of said whereby such articles may be rapidly and corpulley. By operating said lever the chuckrectly ground or polished, so that their lootshaft may be forced back against the action toms will be provided with a yconcavity corof spring E2, or it may be left free to be zo responding to the arc of the grinder or polmoved toward the grinding-wheel by the ac- 7o isher used. tion of said spring.

Our invention consists in the construction To the front end of shaft O is secureda and combination of parts hereinafter dechuck O for the tumbler O2. Said chuck scribed, and pointed out in the claims. consists of two parts o and o', the parto be- 25 In the drawings which accompany and ing secured to the end of the shaft and hav- 75 form a part of this speciiication,and in which ing the ring o hinged to it at o2. A pin turnlike letters of reference denote similar parts, ing freely in a flange or projection of part o Figure l is a plan View of the machine. Fig. has secured to one end a lever o3, and to its 2 is an end view of the same. Fig. 3 is asecother end a button or lug o4, which engages 3o tional view of one of the chuck-shaft slides the lug o5 on ring o when said ring is turned 8o or carriages and a portion of the bed. Fig. up against the part o, and the lever o3 is 4 is a detail view showing the rear end of one turned so as to cause the lugs o4 and 05 to enof the chuck-shafts and its spring-pressed gage each other. The ring o is provided inbearing. Fig. 5 is an enlarged detail secternally with a packing or gasket o6 of rubber 35 tional view of one of the tumbler-chucks or other elastic material. 85 open and detached from its shaft and with a It will be observed that there are two pairs tumbler in place. Fig. 6 is a plan view of a of sliding carriages, one pair being shown at modilied form of slide or carriage. the right-hand end of the table in Fig. l and At M is shown the top of a table suitably the other pair at the left-hand end.

4o supported" by legs or otherwise, and upon the The friction-pulleys D of each pair of 9o table are secured four ways M', and fitted to chuck-shafts receive motion from a single slide upon each of said ways is a carriage l). friction-pulley E, secured to a short counter- Each carriage or slide has connected to it at shaft N, which is mounted in bearings E on its inner end a cord ruiming over an idlertable M. The extreme right and left hand 45 pulley and terminating in a weight or spring, bearings F have their caps extended upward 95 and at its outer end another cord running to form standards or bearings for the long over an idler -pulley and connected to a shaft WV. This shaft WV may be supported treadle K. Each table is provided with a directly above the shafts N; but for convenbearing S. Chuck-shaft O is free to rotate ience of illustrationlhave shown it as slightly 5o in bearing S', 'and the rear end of said shaft arranged to one side of a vertical plane thereroo with. The shafts N receive motion from shaft NV by means of belts and grooved pulleys I and I. The main shaft R, carrying the two grinding or polishing wheels A A, is supported in bearings on .table M, between the shafts N N, in the saine horizontal plane therewith and at a right angle thereto and to y shaft WV.

C is a pulley on shaft R, and receives power for the whole machine from any suitable source. B is a pulley'on the same shaft, and by means of a quarter-twist belt conveys power to the pulley H on the shaft W.

The operation of our machine is as follows: The chuck being opened, as shown in Fig. 5, a tumbler is placed in the ring o', which is then turned up against the part o and secured in that position by the lever, lug, or button, the chuck-shaft being` meanwhile held back by the lever L, and the carriage being held away from the driving friction-pulley F by the operator keeping his foot upon treadle K. A tumbler being thus secured in the chuck, pressure is relieved from t-readle K. rFhen the lever L is turned to allow the chuck to carry the tumbler toward the wheel, and the grinding or polishing begins. When a tumbler is finished, the chuck-shaft is forced back, as heretofore described, and pressure exerted upon the treadle K, thereby bringing the carriage to the position shown at the lower lefthand portion of Fig. l, which allows readyaccess for the removal of the finished tumbler and the insertion of another. Suitable stops may be provided to keep one or more of the carriages out of operative position.

In Fig. 6 we have shown a carriage which, instead of being arranged to slide in a direct line toward and from shaft N, is pivoted at one end, as at c, and has at its other segmental end a curved groove and slot T, iittin g, respectively, a curved rib U and pin V, which project from carriage I. One object of this modied form is, that by having the carriage move or slide in the are of a circle the tumbler is turned outward more conveniently for the removal from its chuck when said pivoted carriage is moved by the treadle K.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

l. The combination, with a grinding' orpolishing wheel, of a rotary chuck, the shaft of which is provided with a friction-pulley and supported in bearings in a plane parallel with the radius of said wheel and opposite the pcriphery thereof and movable in aplane across the face of said wheel, and a power-driven counter-shaft having a friction-pulley, substantially as described.

2. The combination, with a grinding or polishing wheel, of a rotary chuck, the shaft of which is provided with a friction-pulley and supported in bearings in a plane parallel with the radius of said wheel and opposite the pe riphery thereof and movable in a plane across the face of said wheel, a spring for exerting a pressure of l[he chucktoward the wheel, and a power-driven counter-shaft having a friction-pulley, substantially as described.

3. rlhe combination, with a grinding or polishing wheel, of a rotary chuck, the shaft of which isl provided with a friction-pulley and supported in bearings in a plane parallel with the radius of said wheel and opposite the periphery thereof, said bearings being carried by a slide having a path across said plane, and a power-driven counter-shaft having a friction-pulley, substantially as described.

4. The glass-holding chuck herein shown and described, consisting of the combination of a disk concentrically secured to the end of a rotary shaft, a ring hinged to said disk, and means for locking the disk and ring together.

5. In a glass grinding or polishing machine, the combination, with the abrading-wheel thereof, of the disk o, concentrically.secured to the end of a rotary shaft, a ring o', hinged to said disk, and means for locking the disk and ring together, the ring o being provided with an internal elastic packing, substantially as described.

6. In combination with a shaft carrying a plurality of grinding or polishing wheels, two spring-pressed rotary chucks arranged diametrically opposite each wheel, each chuck being mounted on a carriage movable at a right angle to the plane of rotation of the wheel, friction-pulleys on said chuck-shafts, counter-shafts carrying friction-pulleys arranged between and parallel with each pair of chuck-shafts on either side of the wheelshaft, and means for operating the said counter-shafts, substantially as described.

In testimony whereof we affix our signatures in presence of two subscribing witnesses.

HARRY C. VOOD. ANDREV .L SNOBURGER..

Witnesses: Y

JAMES RADCLIFFE, WARWICK SCOTT.

IOO

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