US794375A

US794375A - Grinding mechanism.

Info

Publication number: US794375A
Application number: US24205305A
Authority: US
Inventors: John Nazel
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-01-21
Filing date: 1905-01-21
Publication date: 1905-07-11
Anticipated expiration: 1922-07-11

Description

No. 794.375. PATENTED JULY 11, 1905.

J.` NAZEL. GRINDING MEGHANISM.

APPLIGATION FILED JAN. 21, 1905.

3 SHEETS-SHEET 1.

18 Mfinesses.-

. PATENTED JULY 1l, 1905.

J. NAZBL.

GRINDING MEGHANISM.

APPLICATION FILED JAN. 21, 1905.

3 SHEETS-SHEET 2.

No. 794.375. I PATENTED JULY 11, 1905.

J. NAZBL.

GRINDING MEGHANISM.

APPLICATION FILED JAN. 21, 1905.

3 SHEETS-SHEET 3.

49 Mtnses: 2i 2e 45 25 ai lmfenow www. New

, M01/wey.

Patented July 11, 1905.

AinNT @trice JOHN NAZEL, OF PHILADELPHIA, PENNSYLVANIA.

GRINDING IVIECHANlSlVl.

SPECIFICATION forming part of Letters Patent No. 794,375, dated July 11, 1905.

Application filed January 2l, 1905. Serial No. 242,053.

To @ZZ wiz/071i, zit may concern:

Be it known that I, JOHN NAZEL, a citizen of the United States. residing at Philadel phia, in the county of Philadelphia and State of Pennsylvania, have invented certain Improvements in Grinding Mechanism, of which the following is a specification.

This invention relates to mechanism for grinding cylindrical surfaces, and particularly the surfaces of glass cylinders that are used in bufiing operations. In buffing leather such cylinders are gripped by reciprocating devices which cause them to strike glancing blows upon the leather properly supported therefor, and the result of such operations is to wear the cylindrical to plain or flat surfaces, which require correction by grinding to restore the cylindrical configuration.

It is the chief purpose of my invention to provide mechanism for supporting and manipulating such cylinders in relation to a grinding device coacting therewith, so that they can be manipulated and ground in a convenient and satisfactory manner.

rPhe nature and characteristic features of the improvements will appear by reference to the following description and the accompanying drawings in illustration thereof, of which- Figure 1 represents a side elevation of a machine embodying my invention. Fig. 2 represents a plan View of the mechanism shown in Fig. 1. Fig. 3 represents an enlarged sectional view taken on the line 3 3 of Fig. 2, illustrating roller mechanism for holding the cylinders during the grinding operations.

Fig. 4 represents a sectional view taken on the line 44 of Fig. 3. Fig. 5 represents a face view of an upright for holding the rollersupports, and Fig. 6 represents a diagrammatic View of mechanism for driving the rollers.

As shown in the drawings, the frame comprises the legs 1, which support the

spiders

2 and 3. The spider 2 has the bearing-step 4, adjust-ably held therein for supporting the lower end of the vertical shaft 5, and the spider 3 supports the bearing-step 6, having the upper end of the shaft journaled therein and supporting the hub 7, secured to the grinding wheel or stone 8, which is revolved by a pulley 9, fixed on the shaft. The frame carries the uprights 10, having slots 1l, through which bolts 12 are passed to hold them in vertically-adjustable relation to the frame, and the slots 13, through which are passed bolts 14 for holding the roller-supports 15 in vertically-adjustable relation to the uprights.

Stationary bearings 16 of the roller-supports have journaled therein the spindle 17, which carries the rubber-covered roller 18. A rod 19, carried by the support, has journaled thereon the hanger 20, which is provided with bearings 21, in which is journaled the rubber-covered roller 23. A set-screw 24, movable in the bearing 25, bears against the hanger 2O to adjust and hold thel roller 23.

Astem 26, supported Akby the rod 19, projects upwardly through a shoe 27, which is hinged by a rod 28 to bearings 29, the shoe having the rubber-covered roller 30 journaled in the bearings 30' thereof. A bearing 3l is held on the stem 26 by a nut 32, and fulcrumed on thevbearing by the pivots 33 are the cams 34. These cams impinge upon the shoe and have the handle 35, by which they are operated to regulate the position thereof, the shoe being thrust upward by a coiled spring 36, whereby the position of the roller 3() is regulated. Shafts 37 are carried in bearings 38 and connected With the eccentric 39, fixed to the grinding-wheel by the links 40. Fingers 41, held by set-screws 42 on the shafts 37, engage the ends of cylinders 43, which are carried by the rubber-covered rollers, the rollers holding the surface of the cylinder in frictional contact with the grinding-surface of the wheel 8.

Sheaves 44, fixed on the shaft 5, drive the belts 45, which pass over the sheaves 46, carried by the brackets 47 on the uprights 10, thence over the

sheaves

48 and 49, fixed to the respective spindles 17 and 22, and thence over the sheave 50, carried by the upright.

It Will be understood that by means of the adjustable connection of the uprights l() to the frame and the adjustable connection of the supports 15 to the uprights the position of the rollers for holding the cylinders to be ground can readilyT be adjusted with relation to the stone, while the tightening of the belts 45 for driving the rollers can readily be effected. As the positions of the rollers 23 and can readily be adjusted with reference to the roller 18, it will be evident'that the cylinder can be supported Without centerings by the peripheral engagement of these rollers therewith in the desired relation to the grinding-wheel regardless of the size of the cylinders or the irregularities in its surface.

In the operation of the device the wheel 8 and the

rollers

18 and 22 are revolved in synchronism, the rollers turning' the glass cylinders 43 at a definite rate relative to the revolution of the stone which is acting upon the surface or highest points of the surface of the cylinders, and simultaneously with the revolution of the stone and the cylinders the y,latter are reciprocated radially upon the surface of the stone through its eccentric connection with the rods 37 and the lingers 4l. It will be understood that while but two sets of rollers are shown any convenient number of sets for holding any desired number of cylinders to be ground simultaneously may be employed. As the grinding-wheel is revolved it is maintained in proper grinding condition by supplying an abrasive material to the surface thereof and adding water thereto, while the sludge which is formed thereby and works over the edge of the wheel is delivered by an apron 52 to a trough 53, carried by the frame.

Having described my invention, I claim- 1. A grindingmachine comprising a revolving wheel and a series of rollers extending transversely to the axis of said wheel for supporting an object to be ground so that said object is revolved upon said revolving wheel, substantially as specified.

2. A grinding-machine comprising a revolving wheel, a series of rollers adapted for supporting' a cylinder with its axis disposedtransversely to that of said wheel so that it revolves in Contact with said revolving wh eel, means for adjusting said rollers to cylinders of different diameters, and means for driving one or more of said rollers, substantially as specified.

3. A grinding-machine comprising a revolvingI grinding-wheel, aseries of rollcrs for revolubly supporting an object to be ground by said wheel, and means for reciprocating said object longitudinally as it revolves, substantially as specified.

4. Agrinding-machine comprisingagrinding-wheel, aseries of rollers for revolubly supporting an object to be ground by the face of said wheel, and means connecting said Wheel with one or more of said rollers to revolve said parts in unison, substantially as specified.

5. Agrinding-machinc comprisingaframe, a grinding-wheel revolubl y supported by said frame, a roller-support connected in adjustable relation to said frame, a set of rollers revolubly mounted in said support and adapted for revolubly supporting a cylinder' so as to bring its surface in contact with the face of said grinding-wheel, and means for revolving said grinding-wheel and cylinder in unison, substantially as specified.

6. Agrinding-machinecomprisingaframe, a grinding-wheel revolubly supported by said frame, a roller-support carried by said frame, and a series of rollers journaled in said support and adapted for revolubly supporting an objeetto be ground in contact with said wheel, said roller-support comprisinga hinged shoe having a roller journaled in bearings thereof and a stem for adjusting the position of said shoe and the roller carried thereby, substantially as specified.

7. Agrinding-machine comprising agrinding device, a series of rollers for revolubly supporting an object to be ground by said grinding device, a hinged support in which one of said rollers is journaled, and means for adjusting said hinged support and the position of the roller carried thereby, substantially as specified.

8. A grinding-machine comprising a grinding device, a series of rollers for revolubly supporting an object to be ground by said grinding device, a hinged support in which one of said rollers is journaled, aspring for sustaining said support, and a cam for adjusting said support and the roller carried thereby, substantially as specified.

9. Agrinding-machine comprising a grinding-wheel, a series of rollers for revolubly supporting an object to be ground by said wheel, and a reciprocating rod having means for engaging and shifting said object, substantially as specified.

10. A grinding-machine comprising a revolving vertical shaft, a grinding-wheel revolved by said shaft, a series of rollers extending` transversely to said shaft for supporting an object to be ground by said wheel, and means for revolving' one or more of said rollers by said shaft, substantially as specified.

In testimony whereof I have hereunto set my hand, this 19th day of January, A. D. 1905, in the presence of the subscribing witnesses.

JOHN NAZEL.

Vitnesses:

ROBERT JAMES EARLEY, U'rLEY E. CRANE, J r.

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