US1163041A

US1163041A - Work-rest for grinding-machines.

Info

Publication number: US1163041A
Application number: US68865212A
Authority: US
Inventors: Harry T Shearer
Original assignee: Landis Tool Co
Current assignee: Landis Tool Co
Priority date: 1912-04-05
Filing date: 1912-04-05
Publication date: 1915-12-07
Anticipated expiration: 1932-12-07

Description

H. T. SHEARER.

WORK REST FOR GRINDING MACHINES.

APPLICATION FILED APR-5.1912.

Patented Dec. 7, 1915.

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HARRY '1. SHEARER, 01E WAYNESBORO, PENNSYLVANIA, ASSIGNOR TO THE LANDIS TOOL COMPANY, OF WAYNESBORO, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

WORK-REST FOR GRINDING- MACHINES.

Specificationof Letters Patent.

Application filed April 5, 1912. Serial No. 688,652.

To all whom it may concern:

Be it known that I, HARRY T. SHEARER, a

citizen of the United States, residing at Waynesboro, Franklin county, and-State of Pennsylvania, have invented and discovered certain new and useful Improvements in Work-Rests for Grinding- Machines, of which the following is a specification.

My said invention consists in certain improvements in the details of construction and arrangement of parts of work rests for use on grinding machines, whereby such a rest is provided which will support the work firmly against the action of the grinding wheel, and one which can be accurately and quickly adjusted, all as will be hereinafter more fully described and claimed.

Referring to'the accompanying drawings which are made a part hereof, and on which similar reference characters indicate similar parts, Figure 1 is a side elevation of a work rest embodying my said invention, and Fig. 2 a detail sectional view on the'dotted line-22 in Fig. 1.

In said drawings the portions, marked A represent the work table of the machine, B the base or frame of the rest, and C the grinding wheel, which parts are, or may be, of any approved construction. The base B is mounted upon the work table A by means of clampin bolts 6 in the usual manner. Said base carries two work supporting blocks 10 and 11 mounted to bear upon the underside of the work and the side oppositepose. Said block 10 is mounted upon asuporting arm 12 hinged to the side of the Base B adjacent to the work on a pivot 13. Said arm 12 has a downwardly projecting branch 14 extending below pivot 13-against which a rod 15 is adapted to bear. Said rod 15 is mounted in a diagonal perforation extending through base B, its outer end being screw' threaded and extending through a screw threaded sleeve 16, which is mounted in an enlarged outer end of said perforation. Said sleeve 16 is held in normal position by means of a sliding latch pin 17 mounted in a transverse perforation in base B and having a knob 18 on its outer end. The point.

sleeve 16. A screw 19 is mounted in base B with its point engaging a slot in the side of sleeve 17 to hold it in position and permit a limlted longitudinal movement. A spring 20 bears against a shoulder at the outer end of said pin 17 and serves to normally hold the point thereof in engagement with the depresslon or socket in sleeve 16, as best shown in Fig. 2. By this means it will be readily seen that rod 15 can be slid longitudinally 1n the perforation containing it by merely withdrawing pin 17 7 until its point is disengaged from sleeve 16. The weight of arm 12 will ordinarily cause the movement or it may be controlled by hand. As soon as released spring 20 will return latch pin 17 to normal position with its point ready to engage socket in sleeve 16 as soon as the parts are brought into register. By this means the rest 10, which is supported by the point of rod 15, may be quickly moved toward or from the work, out of the way when work is to be put into the machine and into position for service when the Work is in position and much time ordinarily required for adjustment is thus saved. The feeding of the rest against the work as it is ground away is accomplished by turning rod 15 through the medium of the knurled outer end 21, which, by means of the screw threaded engagement with the sleeve 16, enables the adjustment to be made to any degree desired. The rest 11 is mounted in the end of a sliding rod or bar 22 which extends into a socket in the upper portion of the base B with its central line substantially opposite the center of the work. A screw rod 23 with a knurled outer end 24 is mounted in a screw threaded perforation in said base B, which perforation extends into the socket containing bar 22. The inner end of said rod 23 is thus adapted to bear against the end of said rod 22 and provide for the adjustment of said block 11 toward or against the work. A jam nut 25 is mounted on said screw rod 23 for locking the same in adjusted position.

In operation, the parts are mounted and adjusted in position as shown in Fig. 1, the work W resting against the block 11 opposite the point of contact with the grinding wheel C. Block 10 rests against the underside of the work with its face at an angle as best shown in Fig. 1 so that the support is slightly beyond a vertical line drawn through the center of the work, thus afl'ording the work a firm support between the two' secure by Letters Patent is:

1. A work rest for grinding machines comprising a base, a work support consisting of an angle arm pivoted at its angle to said base at a point below the work with one arm thereof extending upwardly at an angle to rest against the under side of the work and its other arm extending downwardly from saidpivot, a bearing block detachably secured to the upper angular face of said work supporting arm adapted to rest against theunder side of the work at an angle thereto, an adjustable rod extending through the base at an angle adjacent to the lower end of said downwardly projecting arm and adapted to bear against said arm, means for adjusting and securing said rod in an adjustable position, another work rest mounted in a horizontal perforation opposite the axis of the grinding Wheel, and means for adjusting said horizontal rest, substantially as set forth.

2. A work-rest for grinding machines comprising a pivoted support carrying a part adapted to bear against and support the work, a sliding rod adapted to control the movement of said pivoted support, said sliding rod being mounted by means of a screw threaded connection in a sleeve, and means for locking and releasing said sleeve against longitudinal movement, substantially as set forth.

3. A work-rest for grinding machines, comprising a base, a pivoted support on said base, a part on said pivoted support adapted to bear against and support the work, means for supporting and adjusting said pivoted support comprising a rod mounted in a perforation in said base and formed screw threaded with a sleeve mounted on said screw threaded portion, said sleeve mounted in a socket in said perforation in the base, and means for locking and releasing said sleeve, substantially as set forth.

- In Witness whereof, I have hereunto set my hand and seal at lVaynesboro this th day of March, A. D. nineteen hundred and twelve.

HARRY T. SHEARER. [1 s.] Witnesses:

CHAs. B. CLAYTON, K. H. VVASHABAUGIL