US746849A - Device for intermittently rotating tables of machine-tools. - Google Patents

Description

P ATENTED DEC 15, 1-903.

F. KOMNIGKI. TTENTLY ROTATING TABLES OF MACHINE T0013.-

APPLICATION IILED JUNE 29. 1903.

DEVICE FOR INTERMI 1T0 HODEL.

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"Patented December 15, 1903.

FRANZ KOMNICK, OF ELBING, GERMANY.

DEVICE FOR INTERMITTENTLY- ROTATING TABLES OF MACHlNE-TOOLS.

SPECIFICATION forming part of Letters Patent No. 7 L6,84=9, dated December 15, 1903.

' Application-filed June 29, 1903 To all whom it may concern.- 7

Be it known that I, FRANZ KOMNICK, a subject of the Emperor of Germany, and a residentof Elbing, Germany, have invent ed a cer-' tain new and Improved Device for Intermittently Rotating the Tables of Machine-Tools, of which .the following is a full, clear, and eX- aet description.

The present invention consists of an improved device for intermittently rotating the tables of machine-tools and the like, and comprises the details of construction hereinafter set forth, and particularly pointed out in the claims.

In order to render the present specification easily intelligible, reference is had to the accompanyin g drawings, in which similar letters of reference denote similar parts throughout the several views.

Figure 1 is an elevation of the device; Fig.

2, a plan of the same; Fig. 3, a plan and side elevation of one of the tooth-segments, and Fig. 4a vertical cross-section through the vertically-disposed segment.

The table e is mounted to rotate around its vertical axis, and the rotation is eifected by a horizontally-located tooth-segment (1, adapted to rock on substantially the same vertical axis as the table, and by a second tooth-segment 0, having teeth 2, meshing with the said horizontally-disposed segment d. The segment 0 is adapted to rock on a horizontally-disposed pivot c by means of acrank-disk b, mounted on a rotary shaft 0, the crank-pin of said disk' being coupled to a suitable point of the segment 0 by means of the connecting-rod a. The horizontallydisposed segment cl may either be adapted to rock on the vertical axis of the table 6 or it may be guided on the rim or guideway i, Fig. 4, of the table, and the table is'provided with ratchet-recesses It, in which a pawl it engages by the pressure of a spring g. In the drawings the segment (1 is shown guided in the guideway 13 of the tablev rim by means of the guide-blocks f, secured to the said segment.

The operation of the device is very simple. When the shaft 0 is rotated, the-verticallydisposed segment 0 will be rocked by the 'connecting-rod a. and will correspondingly rock the segment 01. The pawl hot? this segment will engage a ratchet notch or recess k of the table e and turn the same as far as the segment is rocked. The segment 0, and with it d, now be- Serial No. 163,632. (No model.)

gin their return movement, during which the pawl It will slide over the smooth rim of the table, allowing the same to remain in the position into which it was turned on the forward stroke of the segment.

It will be obvious from the foregoing description that by reversing the direction of the pawl h and providing notches having their ratchet-surface in the opposite direction to those illustrated the direction of stepwise rotation of the table could be reversed, while the shaft 0 would still rotate in the same direction.

' Bymeans of the present invention the stepwise movement of the table round a much larger angle is attained than has hitherto been the case by the ratchet movements hitherto employed.

I claim as my invention- 1. In-an intermittent grip device, in combination, a table, a vertically-disposed toothsegment and means for rocking the same, a horizontally-disposed segmentin engagement with the same, andmeans for coupling the said horizontally-disposed segment to the table on its movement in one direction of its reciprocation substantially as described.

2. In an intermittent grip device, in combination, a table, a vertically-disposed toothsegment and means for rocking the same, a

horizontally-disposed segment in mesh with the same and having a spring-pressed pawl mounted thereon, there being ratchet recesses in the rim of the table in which said pawl engages during its movement in one direction of its reciprocation substantially as described.

3'. In an intermittent grip device, in combination, a table, a vertically-disposed toothsegment and a horizontally-disposed segment in mesh with the same,'means for rocking the vertically-disposed segment and means for horizontally-disposed segment to the table during one beat of its reciprocation substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

FRANZ KOMNIGK.

Witnesses PAUL KRAU,

Enron EHLERS.

guiding the horizon tally-disposed segment on the rim of the table, means for coupling the

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