US249762A - hayerstigk - Google Patents

Description

4 Sheets-Sheet I.

(No Model.)

J. H-AVERSTIOK.

OIL CLOTH VARNISHING MACHINE.

Patented Nov. 22,1881.

lV/Tmssam (N0 Modei.)

4 Sheets-She'etfi. J; HAVERSTIGK.

OIL CLOTH VARNISHING MACHINE.

Patented Nov. 22,1881.

'4 SheetsSheet 3.

(No Model.)

J. HAVERSTIOK.

OIL CLOTH VARNISHING MACHINE.

Patented Nov. 22,1881

gm 2. 3m.

4 Sheets-Sheet 4.

(No Model.)

J. HAVERSTIOK.

OIL CLOTH VARNISHING MAGHINE.

No. 249,762. Patented N0. 22,1881.

W/m msfs y IlNrrEn STATES PATENT @rrrca.

JOHN HAVERSTIGK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO GEORGE W. BLABON, GEO. G. BLABON, AND JOHN DAVIS, ALL OF SAME PLACE.

OIL-CLOTH-VARNISHING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 249,762, dated November 22, 1881.

Application filed June 17, 1881.

To all whom it may concern Be it known that I, JOHN HAVERSTIOK, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Oil-Gloth- Varnishing Machines, of which the following is a specification. 7: The main object of my invention is to so construct an oil-cloth-varnishing machine that a smooth and uniformly-distributed coating of varnish can be applied to the surface of the cloth as the latter is drawn through the machine, a further object beingto prevent the raveling of threads at the edges of the strip or sheet of oil-cloth after the latter has been varnished.

In the accompanying drawings, Figure 1, Sheet 1, is a sectional perspective view of my improved varnishing-machine; Fig. 2, Sheet 2, a front view of the same; Fig. 3, Sheet 3, an end View; Fig. 4, Sheet 4, a view showing the arrangement of the machine in respect to the drying-racks and drawing mechanism and Figs. 5 to9, detached views of parts of the machine.

A A are the opposite end frames of the machine, which are connected together by suitable transverse beams and braces, the structure being mounted upon wheels adapted to atrack on the floor of the room or apartment in which the machine is situated.

Extending longitudinally from the front to the rear of the machine is a table, 13, over which the oil-cloth is drawn, and upon which it rests during the varnishing operation. To bearings on this table are adapted a pair of shafts, a a, the shaft a being arranged above and the shaft a beneath the table, which is slotted at this point for the reception of rotary cutters b, carried by said shafts a a, and adjustable longitudinally thereon, for a purpose rendered apparenthereinafter.

To bearings in the end frames, A A, are adapted theoppositeends of a varnish-receptacle, D, which consists, in the present instance, of a tube having in the top a longitudinal slot, d, formed by first making an incision in the tube, and then bending inward the metal of the tube on each side of the incision, theseinwardly-bent portions forming shields or guards (No model.)

d, which prevent the accidental escape of var nish from the tube through the slot. (See Fig. 8.) Varnish is introduced into the receptacle D through a central funnel, 61 and is discharged therefrom through one of two sets of perforations, ff, arranged on opposite sides of the center of the tube, the perforationsfbeingless in size than the perforations f, so that the amount of varnish delivered from the receptacle will be dependent upon the direction in which the said receptacle has been tilted. Thus,-when the receptacle is tilted in the direction shown in Figs. 1 and 8, the varnish will escape through the fine perforations f, but when the receptacle is tiltedin the opposite direction a greater quantity of varnish will escape through the coarser perforations f. The slot din the receptacle I) permits access to the interior of the same for cleansing or other pur poses, and enables the attendant to ascertain at any time the exact quantity of varnish contained within the receptacle. v

To suitable hearings on the end .frameA are adapted two vertical crank-shafts, E E, and to hearings on the end frame A are adapted similar vertical crank-shafts, F F, the shafts E and F being geared to the shafts E and F, respectively, so as to turn in unison therewith, and the shafts E and F being driven by means of bevel-gearing from a transverse shaft, G, a belt passing around a pulley on the latter and around another pulley on a suitablylocated power-driven shaft. The crank-shaft F is adapted to a box, 6, at one end of a bar, I, to which is secured a series of brushes, g, the opposite end of the bar having a slot, 0, for adaptation to the crank-shaft E at the opposite end of the machine. A precisely similar brush-carrying bar, I, is used in connection with the crank-shafts E and F, and said bars I I are capable of vertical adjustment on the crank-shafts, in order that the brushes may be caused to bear upon, or may be elevated so as to be free from contact with, the surface of the oil-cloth drawn over the table "B. This vertical adjustment of the bars I I is effected, in the present instance, by means of sliding frames H H, which are adapted to vertical guides in the end frames, A A, and are raised and lowered by means of a treadle, J, which is connected to a transverse bar, J, extending from one frame H to the other.

'A transverse bar, K, carrying brushes h, is adapted to vertical guides in the end frames, A A, and is hung by means of cords or chains to a pivoted frame, L, at the top of the machine. The brushes it of the frame K are arranged closely together, so as to present a continuous brushing-surface from end to end; but the brushes of the frames I I are spaced, for a purpose described hereinafter.

The machine is arranged in front of the doorway of a drying-room containing a series of racks, M, each of the latter consisting of a number of horizontal platforms arranged one above the other, as usual. The oil-cloth in its passage from the machine to the racks is supported upon a frame, T, one end of which is supported by the machine, and the opposite end by notched frames m, arranged on opposite sides of the doorways of the drying-room,

so that this end of the frame T can be adjusted vertically to coincide with either of the platforms of the drying-racks.

The mechanism for drawing the oil-cloth through the machine consists, in the present instance, of a clamp, 8, attached to one end of a cord, 00, which, after passing around pulleys at the rear of the drying-rack, is carried to the front of the same, and is secured to a windlass, y.

The operation of the machine is as follows: A roll of oil-cloth is deposited in the trough formed by the series of transverse rollers '20 at the front of the machine, and the clamp s of the drawing mechanism is brought forward over the table B and secured to the edge of the sheet of oil-cloth, which occupies a position in advance of the cutter-shafts cm. The drawing mechanism being put in operation, the oil -'cloth is drawn between the cuttershafts a a, the cutters b of which trim the edges of the strip, said cutters having'been previously adjusted on the shafts a a in accordance with the desired width of the strip. After the forward edge of the strip has been drawn some distance beyond the varnish-receptacle D the latter is tilted, so as to permit the varnish to escape from one of the sets of perforations f f, and the brush-bars I, I, and

K, which had been previously elevated, are allowed to descend, in order that their brushes mayact upon the surface of the oil-cloth as the latter is drawn beneath the same. As the crank-shafts E E and F F are rotated the brushes 9 are caused to movein circular paths tion of the varnish over the entire surface of the oil-cloth is insured. As the oil-cloth is drawn beneath the brushes h on the bar K all streaks, bubbles, or brush-marks which may have resulted from the action of the brushes 9 are removed, and a smooth and uniform appearance is imparted to the coating of varnish. As the rear end of the strip of oil-cloth approaches the varnish-receptacle the latter is turned up, so as to prevent the escape of varnish from either of the sets of perforations f f. The brush-bars I, I, and K are next elevated, and the strip of varnished oil-cloth is then drawn onto the horizontal platform of the drying-rack and the clamp s detached from the front end of the same prior to being passed over the next platform above and clamped to the front edge of a new strip of oil-cloth, which has in the meantime been deposited on the rollers w. The end of the platform T is then adjusted to coincide with the proper platform of the rack, and the machine is ready for a repetition of the above-described operation.

Heretofore it has been the practice to trim the edges of the oil-cloth after the varnishing operation has been completed, and as a result the strip or sheet of oil-cloth is liable to become frayed at the edges. By trimming the edges of the strip prior to the application of varnish to the surface of the same, said edges become coated with varnish during the varnishing operation, and the threads of the fabric are firmly retained or cemented thereby and fraying prevented.

When one of the drying-racks M has been filled the varnishing machine is moved laterally on its rails until it is in line with another of the drying-racks, which is, in turn, filled, and so on.

It is advisable, in carrying out my invention, to use bars I I having rows of brushes about as long as the width of the strip of cloth to be varnished, the bars being changed when a wider or narrower strip is to be treated. The construction of the bars with a capped bearing at one end and a slot at the other end permits this changing to be readily effected, and the slots serve to prevent slight inequalities in the throw of opposite crank-shafts from interfering with the proper working of the machine.

In carrying out my invention more or less than two brush-bars I I may be'used in some cases, although two bars haye been found to give good results in practice, and this number is preferred for general work.

I claim as my invention- 1. The combination of the table or bed,-the varnish-receptacle, and the drawing mechanism, with a bar extending transversely across the table and carrying a row of brushes, and with vertical crank-shafts connected to the opposite ends of said bar, as set forth. v

2. The combination of the table or bed, the varnish-receptacle, and the drawing mechanism, with two brush-carrying bars extending transversely across the table, and with two pairs of vertical crank-shafts connected to the bars and geared together, as set forth.

3. The combination, in an oil-cloth-varnishing machine, of a table or bed, a trough for holdingthe roll of cloth, edge-trimmingknives, a varnish-receptacle, distributing-brushes, and drawing mechanism, all arranged and operating as described, whereby the cloth is first out or trimmed, then drawn through the stream of varnish from the receptacle, and finally subj ected to the action of the distribntin g-brnshes, as set forth.

4. The combination of the 'arnishingmachine, the drying-racks M, drawing mechanism, and an adjustable platform, T, as set forth.

5. The Within-described varnish-receptacle, consisting of a tube, D, having on one side of the center a row of perforations, f, and on the opposite side of the center a row of finer perforat-ions, f, as set forth.

6. The tube D, having openings ff in the under side, and in the top a longitudinal slot, (1, bounded by inwardly-bent flanges d, as set forth.

7. The combination of the opposite crankshafts with a brush-carrying bar having at one end a box adapted to one of said crank-shafts, and slotted at the opposite end for adaptation to the opposite crank-shaft, as set forth.

8. The combination of the table or bed B, the crank-shafts E E and F F, the brush-bars I I, the frame H, the treadle J, and the bar J, as set forth.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

JOHN HAVERSTIOK.

itnesses JAMES F. ToBIN, HARRY SMITH.

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