US960447A - Table-edge-sanding machine. - Google Patents

Description

E. TYDEN.

TABLE EDGE SANDING MACHINE.

APPLICATION FILED DEO.4,1908.

960,447, Patented June 7, 1910.

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TABLE-EDGE-SAN DIN G MACHINE.

Specification of Letters Patent.

Patented June *7, 1910.

Application filed December 4, 1908. Serial No. 465,899.

To all whom it may concern:

Be it known that I, EMIL TYDEN, a citizen of the United States, residing at Hastings, in the county of Barry and State of Michigan, have invented new and useful Improvements in Table Edge Sanding Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved machine for use in sandpapering or finishing edges of round table tops or the like.

It consists in the features of construction shown and described as indicated in the claims.

In the drawings :Figure 1 is a back side elevation of a machine embodying this invention. Fig. 9. is a section at the line 22* on Fig. l.

The machine shown in the drawings comprises a standard, A, having two arms, A and A disposed preferably at an angle of sixty degrees to each other, and having mounted at the junction or apex a shaft, B, provided with a driving pulley, B at one side of its bearing, and with a friction pulley, B at the opposite side. In the arms, A and A respectively, there are mounted stud axles, C, C, which are adjustable along the arms, respectively, in the slots, a d which extend longitudinally of said arms for the half or substantially the half of their length remote from their junction or apex. On the stud axles, at the side of the arms at which the friction pulley, B is located, there are journaled loose for rotation on the stud axles positioning or guide pulleys, D and E, the three pulleys being in substantially the same vertical plane transverse to their axes, and each comprising a rubber middle portion or tire, D which is also preferably peripherally recessed or channeled as illustrated.

The table top whose edge is to be sanded or finished is lodged upon and between the driving friction pulley, B and the lower pulley, E, at the opposite end of the horizontal arm, A of the standard; and the stud axles of the two pulleys, D and E, are then adjusted preferably by equal movement from the remote ends of the slots, a and 6 back toward the apex of the arms until the table top is substantially centered between the three pulleys. A belt, F, on the driving pulley, B rotating the friction pulley, B

rotates the table top, ing the polishing or cause it to rest upon the driving pulley, B

with sufficient pressure to be driven thereby without being forced theretoward by adjusting the upper pulley, D, actually against the edge of the table.

In order to render the frictional driving engagement which may be obtained by the weight of the table alone as efficient as possible, the pulley, E, is preferably adjusted so as to cause the table top to seat quite deeply between said pulley and the pulley, B which gives a strong wedging action against the two pulleys. The third pulley, D, may then be adjusted only so as to check the table top against displacement while being operated upon; and it need not be adjusted so as actually to bear on the periphery.

To facilitate entering and removing the table top, the pulley, D, is preferably provided with a latch, G, in lieu of an outer flange, such latch being loose on the stud axle, C, of the pulley which is provided with a spring-pressed locking device, G which engages the latch at position for projecting past the edge of the table top, and also at another position where it permits the top to be removed laterally.

I claim l. A machine for finishing circular table tops and the like, comprising a standard; two pulleys mounted thereon projecting off therefrom, one of said pulleys having its bearing in a fixed position, the other being adjustable toward and from said first-mentioned pulley; a check'device also mounted on the standard, substantially in the plane of rotation of the two pulleys, and adjustable toward and from the pulley in the fixed bearing, and means for rotating said lastmentioned pulley.

2. A machine for finishing the edges of circular table tops and the like, comprising a standard having two arms at an angle of substantially sixty degrees to each other; a shaft journaled at the apex or meeting point of said arms transversely to their plane; a friction pulley on the shaft; means for rotating the shaft, the two arms having slots extending transversely to the axis of sa1d shaft; stud axlesmountedin the arms for adjustment in said slots, and table-positioning pulleys on the axles at the same side of said arms at which the friction pulley on the rotating shaft is located.

3. A machine forfinishing circular tablei tops and the like comprising a support and two pulleys mounted thereon projecting ofi' therefrom, having their axes relatively adjustable, and a check device substantially in the plane of rotation of the two pulleys, and having its bearing mounted for adjustment toward and from the plane of the axes of said pulleys.

pulleys having circular table tops and the like,

the two arms having slots ex- 5. A machine for finishing" the edges of 7 comprising a standard having two arms at an angle to each other of less than 90, a shaft journaled at the apex ofsaid angle, or meeting point of said arms, and

one side of standard and means for rotating shaft at the other side of standard; the two arms for slots extending transversely "of the axis of said shaft, stud axles mounted in the arms for adjustment in said slots and table positioning pulleys on said axles substantially in the plane of the friction pulley on the first mentioned shaft.

In testimony whereof, I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 28th day of November, 1908. 1

EMIL TYDEN.

In the presence of- M. GERTRUDE ADY, JULIA S. ABBo'r'r.

v extending through the standard transversely to the plane of the arms; a friction-pulley on said shaft at

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