US137411A - Improvement in brush-machines - Google Patents

Description

E F BRADLEY. 2Sheets--Sheet1l Brush-Machines. N0. 137,411, Patented April1,1873.

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Brush-Machines.

N0. 137,411, 5 PatentedApril,1873.Yy

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UNITED' STATES PATENT OFFICE,

EDWARD F. BRADLEY, OF NEW HAVENQOONNEOTICUT, ASSIGNOR 'IO JOSEPH SHELDON, OF SAME PLACE.

IMPROVEMENT IN BRUSH-MACHINES.

Specification forming part of Letters Patent No. 137,411, dated April 1, 1873 5 application filed March 1, 1873.

T o all whom 'it may concern:

Be it known that I, EDWARD F. BRADLEY, of the city and county of New Haven land State of Connecticut, now residing in London, England, have invented a new Improvement in Machine for Making Brushes; and I do hereby declare the following, when taken in connection with the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawing constitutes part of this specification, and represents, in-

Figure 1, a side view; Fig. 2, a top view 5 Fig. 3, areverse side view; Fig. 4, a longitudinal section on linear m of Fig. l; Fig. 5, a section on line z a.

This invention relates to an improvement in machine for the manufacture of brushes, especially to the adjustment of the block for boring, or for setting the tufts after boring, in irregular forms, the object being to automatically adjust the block for each hole throughout the entire boring or setting of the tufts.

Heretofore, where the block has been automatically guided, it has been only for one line of holes or tufts 5 then a resetting is necessary.

This invention consists in a table having a movement both longitudinal and transverse, combined with a mechanism to intermittently adjust the said table to present the block to the boring or setting instrument from each hole to the next throughout the entire surface to be bored or set.

In the illustration I have shown only the boring-machine; the adjustment of the table is, however, the same for the tuft setting mechanism.

A is the bed of the machine, supporting, in bearings B, the driving-shaft, to which power is applied through the pulley G, running loosely on the shaft, the pulley provided with a clutch to engage with a corresponding clutch, D, on the shaft. The pulley O is caused to engage with the shaft by means vof a sliding bar, E, in connection with the clutch-lever F, so that by pushing in the said bar the pulley will be moved toward the clutch, and by drawing out the bar it will be disengaged. Other means may be employed, the manner of connecting the pulley being no part of this invention. D1 is a vertical slide carrying the boring-spindle D2, the spindle and boring instrument caused to revolve by power applied to the pulley D3 on the spindle. The slide is moved up'and down by means of a crank, D4, on the shaft, to cause the boring instrument to enter and withdraw from the block. G is the table proper, which holds the block to be bored. ly across the machine in guides H, such transverse movement bein g imparted through a pinion, H', beneath the table, this pinion arranged upon a shaft, L, (see Fig. 4,) running back,

and upon its rear end a pinion, L1, is fixed, as

seen in Figs. 2, 3, 4. N is the cam, the axis of which is transverse to the line of the shaft L, and the cam has a groove, L2, formed therein, and, in connection with this groove L2, a rack, L3, vertically guided, is arranged, as seen in Figs. 3 and 5, a stud on the said rack Working in the groove L2 of the cam, and as this groove revolves an up-and-down movement is imparted to the rack L3, and this up-and-down movement causes the shaft L to revolve, and impart a corresponding transverse movement to the table G. Beneath the table G a bed, G', is arranged, and upon which the guides H are formed. To this lower table G' a longitudinal movement, or a movement at right anglesto the table proper, is imparted, the said table G'being supported in suitable guides. To impart this longitudinal movement a groove, P, is formed upon the opposite side of the cam, as seen in Fig. 4, and a connecting-rod, P', running baclr, and in connection with the groove in the cam, so that, as the cam revolves, the irregular form of the groove in the cam imparts a corresponding movement to the table G', thus giving to the table G a combined longitudinal and transverse movement. The periphery of the wheel is toothed, as seen in Figs. 1, 2, and 3, these notches each corresponding to one tuft of the brush. Into these notches a pawl, cc, drops, and is operated by a crank or cam, R, on the driving-shaft, so that each revolution of the driving-shaft moves the cam one tooth. A stop-dog, d, is arranged to arrest the cam at the end of each movement. As many teeth at least are formed upon the surface of the cam as there are holes to be This table has a movement transversebored or tufts to be set in the brush, and the forms of the two grooves in the cam are such relatively to the holes to be bored or tufts to be set that, commencing at the beginning, the table will be intermittently adjusted to present the block to the boring or setting instrument at the exact point where each successive hole is to be bored or tuft to be set throughout the whole number of borings or tufts, so that any irregular form may be bored or set, it only being necessary to construct the grooves in the cam accordingly.

That the machine may automatically stop when the boring or settin g is completed, I arrange in connection with the cam a wheel, S, having a projection, t, thereon, which, when the work is completed, comes in contact with the lever T, which is in connection with the bar E, so that the said stud, forcing the lever outward, will disengage the pulley O from the clutch. The board or set-block is then removed, a new one introduced, and the cam turned until the place of beginning for boring or setting comes beneath the boring instrument. Y

I he circumference of the cam is made sufficiently large that the spaces upon its periphery may correspond to the greatest number cf tufts to be set in a single brush, or larger, and on the periphery of the wheel extending from the point of beginning to the point of endingthat is, the portion of the periphery not required- I place a segment, n, upon which the pawl d will fall, instead of falling into the notches to arrest the movement of the cam, and the stopping occurs when the first end of this segment reaches the pawl; then, in rest-v ing, the cam is turned by hand or otherwise until the iirst tooth or notch m beyond this segment is reached; then the pawl falls into this notch, and the work of boring or setting each cam will impart an independent movement to one of the tables, and the movement of the tables in right angles to each other, the combined movement by the said two cams indicating the path or line of tufts to be set, substantially as set forth.

2. The toothed periphery of the cam, combined with the pawl a and stop d, and, in connection with the table G, supporting the block, and operating to impart to the said table an intermittent movement, substantially as and for the purpose described.

3. In combination with the clutch D and pawl a, and stop d, and the cams L2 and I), the sliding bar E, lever T, and stud t on the wheel S, to automatically arrest the movement gf tlllle cams and tables, substantially as set ort EDWARD FRANKLIN BRADLEY.

Witnesses:

W. J. WYNN,

24 Royal Exchange, London, J. L. FoRsHAnv,

24 Royal Exchange, London.

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