US727129A - Grinding attachment for lathes. - Google Patents

Description

No. 727,129. PATElI'lED MAY 5, 1903.

A. R. GREVER &: G. STONE.

GRINDING ATTACHMENT FOB. LATHES.

APPLICATION FILED MAY 31, 1902.

no mom: R 2 sums-sum 1,

Q. m E N WITNESSES: INVENTUHS:

9AM R 5W0 ATTORNEY.

No. 727,129. PATBNTED MAY '5, 1903.

' l A. R. GREVER & G. STONE.

GRINDING ATTACHMENT FOR LA-THES. APPLICATION FILED MAY 31, 1902.

No MODEL. 2 SHEETS-SHEET 2.

6 I 6 10 a i V 7 f? 3 ;$-7/// I I 7 D I w 7;[ .6. I

| 7| v I v r I Z5- l I I WITNBSES: mewrans:

' 'MQOF 78mm) [Cymwgi A w'Gem fim Br ex. ATTORNEY.

UNITED STATES PATENT Patented May 5, 1903.

Cruise.

ALBERT R. GREVER, OF PENSAUKEN, NEWVJERSEY, AND CLARENCE STONE, OF PHILADELPHIA, PENNSYLVANIA.

GRINDING ATTACHMENT FOR LATHES.

SPECIFICATION forming part Of Letters Patent NO. 727,129, dated May 5, 1903.

Application filed May 31,1902. Serial No. 109,643. (N0 model.) I

To all whom it may concern:

Be it known that we, ALBERT R. GREVER, residing at Pensauken, in the county of Camden and State of New Jersey, and CLARENCE STONE, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, citizens of the United States, have invented certain new and useful Improvements in Grinding Attachments for Lathes, of which the following is a specification.

This invention relates to grinding attachments for lathes, and has for its object to provide, first, an adjustable attachment which may be readily applied to lathes of varying sizes; second, an attachment having a driving mechanism which will always positively drive the grinding-wheel and at the same time permit the latter,with its complementary parts, to be moved with the lathe-carriage transversely and longitudinally of the lathe in a manner to grind various kinds of work; third, an attachment having an angular adjustment to meet the various requirements, including the grinding of the lathe-centers.

With this object in view the invention consists in the novel construction and combina tions of parts, which will be hereinafter fully described and claimed.

In the drawings, Figure 1 is a plan view of our improved attachment as applied to a-lathe. Fig. 2 is a side elevation thereof. Fig. 3 is a plan view, partly in section, of the frame carrying the grinding-wheel and adjuncts. Fig. at is a sectional detail of one of the pulleystands. Fig. 5 is a sectional plan 'of one of the pulley-stands. Fig. 6 is an endelevation of one of the pulley-stands as applied to the lathe.

1 designates the main frame, 2 the toolcarriage, 3 the driving-pulleys, and 4 the centers, of a well-known type of lathe, the tool-carriage being movable transversely and longitudinally of the machine in the usual manner. 7

Our grinding attachment in its preferred form is of the following construction: I

5 is a frame provided with bearings 6, in which isjournaled a shaft 7, which is provided at one end with a grinding-wheel 8 and at the opposite end with a knob 9, by means of which the shaft may be moved back and forth passing through a slot.- in said bracket.

'24:, arranged on the frame 5.

through its bearings, as desired. Spli-ned on the shaft 7 is a pulley 10, which is arranged between the bearings 6, thereby permitting the longitudinal movement of the shaft without altering the position of the pulley.

11 is a bracket, which is adapted to be rigidly secured to the tool-carriage by a bolt 12 Rising from this bracket is a post 13, to which is fitted a collar 14, so as to be vertically adjustable thereon, a set-screw 15 being provided for that purpose. The collar 14 carries the frame 5, the latter being provided with a boss 16, which is fitted to the collar 14. so as to be circularly adjustable about said collar. The boss 16 rests upon a flange 17 on the collar and is provided with a set=5crew 18, by means of which the frame may be secured in its various positions of adjustment. This construction permits the frame 5 to be adjusted so as to vary the angular position of the grinding-wheel in respect to the center line of the lathe, and thereby meet the various requirements of the Work to be groundsuch, for example, as grinding the lathe-centers 4.

The shaft 7 is driven by a belt 19, arranged longitudinally of the machine and passing from one of the driving-pulleys to and around the pulleys 2O 21 of a pair of pulley-stands 22 23, respectively, which are adapted to be secured to the lathe near the respective ends thereof, said belt being directed to and around the pulley 10 on the shaft 7 bya pair of pulleys The pulleystands 22 23 each comprise a pair of clampingjaws25, held togetherby screws 26, and a vertical post 27, arranged on. the upper jaw. Fitted to the posts 27 are frames 28 28" ,on which are mounted the pulleys 2021'; respectively. The frames 28 28 are provided with set-screws 29, by means of which they'may be'ad'justed vertically on the posts 27. The pulleys 20 on the stand 22 are arranged in pairs and at right angles to each other, so' as to guide 'the belt 19 to and from the pulley 21 on the stand 23 and to and from the driving-pulleys 3 of the lathe.

As the grinding-wheel 8 is moved longitudinally of the machine with the tool-carriage, the belt 19 passes around thepulleys 24 an 10 without interfering with the action of the grinding-wheel.

In order to maintain the belt 19 taut and to permit the grinding-wheel 8 to be adjusted transversely of the machine with the carriage 2, we mount the pulley 21 on the frame 28 of the stand 23, so as to have a yielding connection therewiththat is to say, the pulley is mounted on a stem 30, which is slidingly fitted to the frame 28, and is held normally retracted by the action of a spring 31, interposed between said frame and a collar 32 on the stem 30.

By the above-described construction it will be seen that the grinding-wheel can be adjusted at will to any angle or longitudinally or transversely of the machine without interfering in any Way with its driving mechanism.

We claim 1. The combination with the tool-carriage of a lathe, a bracket adapted to be secured thereto, a post on said bracket, a frame adjustably mounted on said post, a shaft journaled in said frame, a grinding-wheel on said shaft, and means for actuating said shaft.

2. The combination with the tool-carriage of a lathe, of a bracket adapted to to be secured thereto, a post on said bracket, a collar on said post, means for adjusting said collar vertically on said post, a frame on said collar, a shaft journaled in said frame, a grindingwheel on said shaft, means for actuating said shaft, and means for adjusting said frame circularly about said collar whereby the angle of the shaft may be varied. I

3. The combination with the tool-carriage of a lathe, of a belt, means for supporting and guiding said belt longitudinally of the lathe, means for driving said belt, a frame secured to the tool-carriage, a shaft in said frame, a grinding-wheel on said shaft, a pulle'y on said shaft, and means for directing said belt to and. around said pulley.

4a. The combination with the frame and tool-carriage of a lathe, of a frame adapted to be secured to the tool-carriage a shaft journaled in said frame, a grinding-wheel on said shaft, a pulley on said shaft,apair of pulleystands adapted to be mounted on the latheframe near the respective ends thereof, pulleys on said stands, a belt passing around said pulleys and extending between said stands, means for driving said belt, and means for directing said belt to and around the firstnamed pulley.

5. The combination with the frame and tool-carriage of a lathe, of a frame adapted-to be mounted on the tool-carriage, a shaft journaled in said frame, a grinding-wheel on said shaft, a pulley on said shaft, a pulley-stand provided with pulleys and adapted to besecured to the lathe, as'econd pulley-stand having a pulley mounted thereon so as to have a yielding connection therewith, a belt passing around all of said pulleys, means for driving said belt, and means for directing said belt to and around the first-named pulley.

6. The combination with a lathe, of a bracket adapted to be secured to the tool-oarriage thereof, a frame adj ustably mounted on said bracket, a shaft journaled in said'frame, a grinding-wheel on said shaft, a pair of pulley-stands, adjustable frames thereon, pulleys on said adjustable frames, abelt passing around said pulleys and extending between said stands, means for driving said belt, and me'ansfor directing said belt to and around the first-named pulley.

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

ALBERT R. GREVER. CLARENCE STONE.

\Vitnesses:

RALPH H. GAMBLE, ANDREW V. GROUPE.

Images