US1945519A - Coating machine - Google Patents

Description

Feb. 6, 1934. CHAPIN 1,945,519

COATING MACHINE Filed April 13, 1951 2 Sheets-Sheet l H. L. CHAPIN COATING MACHINE Feb. 6, 1934.

Filed April 13, 1931 2 Sheets-Sheet 2 Patented Feb. 6, 1934 UNITED STATES COATING MACHINE Herbert L. Chapin, Swampscott, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J.,' a corporation of New Jersey Application April 13, 1931. Serial No. 529,714

11 Claims.

shoe to the brush in a position accurately determined by suitable gaging and feeding elements. The problem of uniformly and completely coating a heel section exactlyto a predetermined line and of protecting all other parts of the shoe from blacking is one of difficulty. This is particularly true under the conditions of commercial manufacture where the operator must present one shoe after another to the machine at a rapid rate and where quantities of blacking are carried by brushes and other applying devices which are in continuous motion. It has been the practice heretofore to protect the counter portion of the shoe above the rand crease by a rotary guard which serves to determine the location of the shoe with reference to the applying brush, to assist in feeding the work, in applying theblacking about the entire periphery of the heel and also to prevent blacking from reaching'the counter. The present invention comprises improved means for scraping or cleaning such a rotary guard so that blacking which may accidentally reach its face I, is reliably removed before it can be carried against 35 the counter. In one aspect my invention consists in improvements in machines of the type'disclosed in my prior patent. In a broader aspect, it consists in improvements applicable to any coating machine employing a rotary guard or disk for protecting portions of the work.

As herein shown, a scraper frame is mounted adjacent to the face of the rotary guard in such a manner as to be free for bodily movement transversely of the axis of the guard and is provided with scraper members engaging the guard in areas on opposite sides of its axis. The construction is preferably such that the scraper frame is maintained in afioating relation to the of this construction is that the entire surface of .guard so that the scraping members will auto the guard is reliablyand'completely cleaned in each revolution of all blacking which may reach it in the form of drops splashed from the brush or other moving parts or as surplus blacking displaced from the rand blacking rim of the guard.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawings, in which Fig. 1 is aview of the machine in front elevation; V

Fig. 2 is a plan view of the rotary guard and associated parts; v

Fig. 3 is a view in side elevation, on an enlarged scale, of the same parts, shown partly in'section; and

Fig. 4 is an end view of the scraper shown in its relation to the guard shaft.

' The illustrated machine is of the type shown in my prior Patent No. 1,760,115, to which reference may be had for details of construction not specifically described herein. In this machine the head frame 10 supports a bearing member 2 in which is journaled a horizontal shaft 3 carrying at its left-hand end a fiat rotary blackingapplying brush 4. The brush is confined at opposite sides between disks 5 and 6 which are carried bythe shaft 3 and is supplied with blacking by a rotary transferring device '7. Liquid blacking is contained within a trough 11 supported between the sides of the frame 10 and is conveyed to the transferring device by mecha nism which forms no part of the present invention. The shaft 3 and brush 4 are driven at a suitable speed and the brush is given a def-' inite width by the confining disks 5 and 6 so that a uniform coat of-blacking of the width of the brush is applied to the periphery of a heel presented thereto by the operator. A scraper 8 is provided for cleaning the outer surface of the right-hand disk 5.

, The machine frame 10 is provided at its lefthand side with a pair of stationary bosses 12 and 13 which project forwardly in spaced relation and are. perforated transversely to receive respectively cylindrical stems or studs 14 and 15. The stems 14 and 15 are disposed in parallel relation and constitute part of a holder which includes ahead or yoke 16 which is disposed inv substantially vertical position and bowed or con caved at its inner face to clear parts of the machine to be presently described. 1

The stems 14 and 15 are rigidly but adjustably secured within the bosses 12 and 13 and tion of the shoe.

constitute supports for a bearing head 17 which is provided at each end with upwardly and downwardly-extending perforated arms which receive the stems and are adjustably secured thereto by suitable set screws. The lower boss 12 is provided with an adjusting screw 20 which is threaded through the boss and bears at its inner end against the inner downwardly-projecting arm of the bearing head 1'7: The outer downwardly-projecting arm is perforated so that the head of the adjusting screw may be reached for purposes of adjustment. It will be apparent that the longitudinal position of the bearing head upon the stems 14 and 15 may be accurately determined-by the setting of the screw 20. t In the bearing head 17 is journaled a horizontal shaft 21 having at its outerend a collar 18 and at its inner end a rotary guard comprising a conical disk 22 having an outer peripheral rim 23 and an inner annular rim 24. The rotary guard is clamped against the recessed, end of the shaft 21 by a thimble 25which overlaps the inner flange 24 of the guard and is held in place by a taper head clamping screw 26 threaded into the end of the shaft. The clamping screw 26 carries also a disk 2'7 which is contained within the hollow body of the disk 22 and servesas one element of the connection between the guard shaft and brush shaft, although the complete detail of this feature is not illustrated since it forms no part of the present invention. The outer flange 23 of the guard is designed to run inthe rand crease of the 'shoe for the double purpose of accurately and positively locating the heel to be blacked with respect to the blacking-applying brush 4 and of applying blacking to the ledge or shoulder of the heel between the heel and the counter por- For the latter purpose blacking is applied to the right-hand face of the rim 23 by means not herein shown. The fact, hjow ever, that this rim of the guard is intended to carry and apply blacking explains one manher in which the outer face of the guard is likely to receive blacking and emphasizes the necessity for effective cleaning or scraping means.

As herein shown, the head or yoke 16 above mentioned is utilized as a supporting member for the scraper, which will now be described. 'At its upper and lower ends in positions substantially vertically in line with the axis of the shaft 21, the head 16 is provided with forked wings 28 forming spaced vertically-disposed grooves. The scraper frame 29-comprises a curved bar bowed outwardly at its center so as to provide ample clearance for the shaft 21, as shown in Fig. 4, and provided at either end with a vertically-disposed tongue which is arranged to slide freely in the forked wings of the head 16. There is thus established a tongue and groove connection between the vertically stationary head 16 and the scraper frame 29 which permits the latter to move longitudinally and transaxially or transversely with reference to the axis of the shaft 21. At its upper and lower ends the scraper frame 29 'is provided with inclined tapering pockets 30in each of which is removably received a wiping or scraping pad 31 of felt or other suitable wiping or scraping material. The pockets30 and the pads containedtherein are inclined at an angle corresponding to the inclination of the conical surface of the. disk 22 and it will be seen that the pads 31 engage the disk in areas which are diametricallydis-posed on the'surface of the disk. The end of each stem 14 and 15 is recessed to receive a compression spring 32 and the outer end of each of these springs is received in a corresponding socket formed in the outer face of the scraper frame. The springs, therefore, constitute a yielding connection between the vertically stationary head 16 and the scraper frame, and by bending permit a limited vertical movement of the scraper frame and also a rocking movement thereof. At the same time they urge the scraper frame always toward the rotary guard and maintain the pads 31 in engagement therewith.

I It will be seen that the connection above described maintains the scraper frame 29 in floating engagement-with the conical disk 22 of the rotary guard, that isto say, while the scraper is maintained in engagement with the surface of the guard it is permitted to float or move vertically and also to rock so that the pads 31 may be maintained continuously and accurately in engagement with the outer face of the guard which, for the successful operation of the machine, it is important to maintain in a clean condition. The scraper as a 'whole tends to conform itself to the surface of the guard and to maintain a concentric:

surface of the guard clear out to the far edge thereof, maintaining its entire surface clean and disposing of any'blacking which might find its way over'the rand crease flange 23. the surfaces of the disk 22 or the flange 23 contain irregularities or are 'not true surfaces of revolution with respect to the axis of the shaft 21, the scraper frame 29 is permitted to rock and thus follow the rotation of the guard regardless of any wab'blethat might occur in it.

As a result of the construction above disclosed, coating machines having this improved equipment are more cleanly in their operation than heretofore, damage to the goods by staining is avoided, and in general the product of the machine is improved and the work of the operator facilitated. While the invention has been described in its application to a blacking machine, it will be understood that the term is used generically to include liquid stain, lacquer, paint and coatings of all description and that in general the invention may be usefully applied in any machine employing a rotary guard or gage intended to have contact at any time with the work.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. Ina coating machine having a rotary brush anda rotary guard associated therewith, a scraper frame mounted adjacent to the outer face of the guard for free bodily movement transversely of the axis of the guard, said frame having scraperv members engaging the guard in areas on opposite sides of its axis, means for preventing rotative movement of the scraper frame with the guard, and flexible means for supporting said frame against gravity;

2. In a coating machine having a rotary brush and a rotary guard associated therewith, a scraper frame mounted for free adjusting movement transversely of the axis of the guard and also Further, if

in'a direction parallel to said axis, said frame having scraper members engaging the guard in areas on opposite sides thereof, and guides to control the transverse adjusting movement.

3. In a coating machine having a rotary brush and a rotary guard associated therewith, a scraper frame guided for movement transversely of the axis of the guard and yieldingly supported so that it may rock at either end toward or from the guard, and having scraper members engaging the guard at separated areas on one surface.

4. In a coating machine having a rotary brush and a guard associated therewith and arranged to rotate about a substantially horizontal axis, a scraper frame having scraper members which conform to the face of the guard above and below its axis, and guiding means for said frame permitting vertical movement thereof so that it may follow the guard in any eccentric movement thereof and allowing also free rocking movement to follow any irregular movement of the guard face.

5. In a coating machine having a rotary brush, a driven shaft carrying a rotary guard disposed adjacent to the brush, a curved scraper frame arranged to extend about said shaft with clearance, scraper members mounted upon the scraper frame in position to engage the disk in diametrically opposite areas. and yielding supporting means for the scraper frame constructed and arranged to allow it to float transversely of the axis of said guard.

6. In a coating machine having a rotary brush, a carrier movable toward and from one face of the brush and having a rotary guard mounted therein, a scraper frame yieldingly supported by said carrier constructed and arranged for floating movement either axially or transaxially in relation to the guard, and scraper members mounted in said scraper frame to engage the face of the guard in diametrically located areas.

7. In a coating machine having a rotary brush, a convex guard arranged to rotate adjacent to said brush, a scraper frame supporting scraper members positioned in tilted relation for firm engagement with the convex face of the guard, a sliding mounting for said scraper frame permitting movement transverse to the axis of the guard, and springs for pressing said frame toward the guard, thereby tending to maintain the scraper members concentric with respect to the guard and in contact therewith regardless of eccentricity in the guard.

8. In a coating machine having a rotary brush, a conical disk disposed adjacent to said brush, a scraper frame having pockets inclined to the axis of the disk and tapering outwardly from said axis maintaining scraper pads in contact with spaced areas upon the conical disk, means for loosely supporting said frame, and individual yielding means pressing said pads toward the disk, thereby tending to center the scraper with respect to the disk in all positions of the latter,

9. In a blacking machine having a rotary brush, a driven rand crease disk disposed adjacent to said brush and having a convex outer surface arranged to protect the counter portion of a shoe during the heel blacking operation, a supporting member adjacent to the disk, a scraper frame having tongue and groove connection with said member permitting transaxial sliding movement thereof, springs operating to press said frame toward the disk, and inclined Wiping pads on the frame bearing upon the convex surface of the disk at points on opposite sides thereof and tending to react with the disk to shift the position of the scraper frame to follow irregularities in the rotation of the disk.

10. In a blacking machine having a rotary brush, a driven shaft carrying a circular guard for the brush, a support having aligned slots disposed at opposite sides of the shaft, a scraper frame mounted in said slots for sliding movement transversely of the shaft and for sliding movement coaxial with the shaft, said scraper frame being shaped to extend about the shaft with clearance and having pockets located at diametrically opposite positions with reference to the axis of the brush and in a line parallel to the slots of the support, pads removably contained in said pockets, and springs for yieldingly urging the scraper frame and guard toward each other.

11. In a coating machine having a rotary brush, a convex guard arranged to rotate adjacent to said brush, a scraper frame supporting scraper members in engagement with the convex face of the guard and mounted for bodily movement transversely of the axis of the guard,

a supporting member adjacent to said disk provided with recesses on opposite sides of the axis of said guard, and helical springs the major portions of which are received in said recesses and the projecting portions of which are secured to said scraper frame, thereby permitting limited movement of the scraper frame transversely of the axis of the guard and operating to urge the scraper members into firm engagement with theguard.

HERBERT L. CHAPIN.

Images