US2039359A - Foxing cementing machine - Google Patents

Description

y 9 1936- E. w. STACEY FOXING CEMENTING MACHINE 2 Sheets-heet 1 Filed Jan. 12, 1934 WVf/VTU/L i MM),

y 1936- E. w. STACEY FOXING CEMENTING MACHINE 2 Sheets-Sheec 2 Filed Jan. 12, 1934 l atented May 5 1936 UNITED STATES PATENT OFFICE FOXIN G CEMEN TING 'MACHINE Application January '12, 1934, Serial No. 706,384

20 Claims.

This invention relates to coating applying devices and is illustrated as embodied in a 'foxing cementing machine of the type shown in my earlier application for Letters Patent of the United States Serial .No. 663,121, filed March 28, 1933.

In the manufacture of rubber-soled shoes of the tennis type, it is customary .to apply to the lower periphery of the shoe on a portion known as the foxing area .a coating of cement which may extend over on to the ,bottom of the shoe. By means of this cement there is secured to the lower margin of the shoe a strip of gum rubber known as the foxing strip .to which the edge of the sole is secured temporarily by pressure, and then permanently by vulcanization. .A machine is described, in the application to which reference has been made above, by means of which a coating of cement .may be applied in just the desired position on the shoe'accurately and with a minimum of skill on the part of the operator. The machine therein illustratedis provided with mechanism for turning a shoe to presentsuccessive portionsof the foxing area to am applying nozzle which is mounted on a swinging arm, and from which cement flows directly onto the shoe. In the application of cement of water-dispersed rubber, commonly termed latex, problems are encountered which are .not met in the application of naptha-cut rubber cement and the like.

Chief among these is the-difficulty resulting from the tendency of latex to coagulate and-clog .any passages through which it may be forced thereby rendering it necessary to-clean the parts; .of the machine at frequent intervals.

It is, accordingly, one important-object of the invention to provide .an improved foxing cementing device which may be employed for the application of latex .or other forms of cement .with facility.

To this end, a feature of theinvention resides in .an improved applying nozzle, the construction of which is such that it may be readily cleaned, thereby greatly facilitating its use with latex. In the illustrated machine, the nozzle is made of flexible material, such .as rubber, and maybe-readily distorted to spreadopen the outlet end of the nozzle inorder to clean it.

It is desired to deposit the cement in uniform quantities upon all portions -of the area to be :coated. Accordingly, another feature of the invention resides in a foxing cementing machine provided with a flexible nozzleso arranged that it may be wrapped around the portion of theshoe tobe coated such, for example, as the peripheral corner of the shoe which is formed by the intersection of the bottom surface with the foxing area along the side of the shoe, thereby bringing the nozzle outlet close to the shoe. This allows 5 all the cement to flow at low pressure directly on the shoe and facilitates control of the location and extent of the coated area. Guide members engaging the side and bottom of the shoe assist in this. As shown, the nozzle is tilted with re- 10 spect to the outline of the shoe thereby to drag easily along the shoe.

Provision is made in the illustrated machine for so supporting th flexible nozzle that it is normally tensioned transversely but may be disl5 placed and caused to conform to or Wrap around a portion of a shoe brought into contact therewith. Collapse of the nozzle is prevented by spacing ribs or ridges between the sides. As illustrated, these ribs are attached to only one 20 side and, therefore, do not interfere with the easy spreading of the nozzle for cleaning by pressure applied to the edges.

These and other features of the invention are described in the following specification taken in 25 connection with the accompanying drawings, in which Fig. 1 is a side elevation, with parts broken away, of the head of my improved machine;

Fig. 2 is a fragmentary view on a larger scale 30 of the nozzle and its carrier taken from the opposite side of the machine to show the flexible nozzle wrapped around a lateral corner of a shoe which is shown in section;

Fig. 3 is a fragmentary perspective View on a 35 still larger scale showing a fragment of the end of the nozzle when wrapped around a portion of a shoe;

Fig. 4 is a section through the end of the nozzle longitudinally thereof; 40

Fig. -5 shows the nozzle distorted by the hand of an operator to facilitate cleaning of the inside of the nozzle, and

Fig. 6 is a plan view of the nozzle carrying arm.

As in the machine shown in my prior application to which reference has been made above and in which will be found a more complete description of 'partsnot herein fully shown or described, there is provideda frame 10 having an overhanging portion 12 in which there is journaled a driven shaft l4 upon an inclined axis. The lower end of the shaft has a pinion l6 and the shaft derives power through a vertical shaft I8 from mechanism not herein shown. Adjacent to and 55 beneath this overhanging portion of the frame, a shoe S mounted on a last L (Fig. 2) is held in position by a jack mechanism comprising a last pin 20, a toe rest 22 and a heel clamp 24. These parts are all secured to an elongated frame 26 having an internal rack which coacts with the driving pinion US. At the top of this frame are provided semicircular members 28 which coact with a guide rail 30 in such a way that the pinion and internal rack produce a movement of the shoe past an operating point at a substantially constant linear speed. The movement of the shoe is made up of straight line movements as the operation proceeds along the side of the shoe and turning movements as the operation is upon the toe or heel end of the shoe, these movements being all in the same general direction and substantially normal to the drawings and away from the observer. Control mechanism for starting, stopping and otherwise regulating the movements of the machine and not described herein will be found to be completely set forth in said prior application.

The application of cement to the foxing area of the shoe which lies between the line 32 in Fig. 1 and the bottom of the shoe is effected by means of a flexible nozzle 34 from which the cement flows freely upon the lowermost portion of the shoe and any excess cement is caught in an underlying receptacle and reused. Mechanism is provided for supplying cement to this nozzle through a hose 31 (Fig. 6) and a pipe 36 which is connected to the nozzle through a hollow block 39 on an arm 40 and suitable pipe fittings 38 (Fig. 2). This mechanism also comprises a receptacle, not shown, from which the cement may flow by gravity or from which it may be forced by air pressure or by means of a pump, not illustrated herein. It will be observed that the arrangement of the supporting jack including the frame 26 is such that successive portions of the work are carried past a substantially fixed operating point. However, the shape of the shoe will not exactly correspond to the shape of the internal rack which guides the movements of the shoe and, therefore, as in my earlier machine, I have mounted the nozzle upon a swinging arm 40 (Figs. 1 and 6). This arm 49 is secured indirectly to a hollow cylindrical yoke 4| which is fastened at the upper end of a shaft 43 extending heightwise of the shoe thereby permitting swinging movement of the arm to carry the tool toward and away from the shoe about an axis indicated by the line 42 in Fig. 1. The arm 40 is also pivoted for movement to carry the tool heightwise of the shoe about a pin 41 within the yoke 4|, the axis of which in one position is indicated by the line 44. This axis extends at right angles to the line 42. The nozzle is held against the side of the shoe by a spring 49 (Fig. 6) connected to a lug 51 on the shaft 43 and to a relatively fixed point, while movement of the arm to carry the tool heightwise of the shoe thereby to determine the level of the upper edge of the foxing area is effected by a spring 53. This spring is coiled about the axis of the pin 4? and is secured at one end to the arm 40 and at the other end indirectly to the yoke 4|. This arrangement of the arm 40 is the same as in my prior application. The arm 40 herein is provided with a bent end 46 (Fig. 6) having an outwardly extending stud 48 upon which there is clamped, by means of a bolt 59 (Fig. 2), a nozzle carrier 52.

The nozzle 34, which may be of rubber, has a tubular portion 54 which is slipped over one of the pipe fittings 38 and has a delivery portion Which is fan-shaped so that its flexible sides 56 and 58 define an elongated outlet opening (Fig. 6) which may be bent or distorted. This opening 88 is subdivided and maintained of equal width throughout the length of the opening by spacing projections, shown as ribs or ridges 60 (Figs. 3, 4 and 5). These ribs are integral with the side 58 and are longer in the center than at the edges because the greatest flexing movement, when the nozzle is brought into contact with a shoe, will occur at the center, as shown in Fig. 2. They prevent a collapse of the outlet opening when the nozzle is wrapped around the corner of a shoe as shown in Figs. 2 and 3. Being integral with only one side of the nozzle, however, they do not prevent distortion of the nozzle by the hand of an operator pressing against the edges of a nozzle not in contact with the work to open the nozzle in the manner indicated in Fig. 5 and facilitate cleaning of the interior thereof. If latex cement is employed, it is very easy, While it is still Wet, to clean out any coagulated particles either with the finger or with a suitable brush when the nozzle has been distorted to spread the outlet opening as shown in Fig. 5.

Application of the cement to just the desired portion of the shoe including both the foxing area and the'adjacent portion at the bottom of the shoe is facilitated by the mounting of the nozzle to permit it to be wrapped around a corner of the shoe when the two are brought into engagement, as indicated in Figs. 2 and 3. To this end, the nozzle is provided with tabs 52 and 64 by means of which it is secured to the carrier 52. The tab 64 is clamped to the carrier 52 by a bolt 66 which also holds in position an oval guard plate 68. The edge of this guard plate rests against the shoe approximately at the upper edge of the foxing area and prevents the spread of the cement above the line 32. The guard plate 68 also guides the tool along the changing peripheral contour of the shoe. The other tab 62 of the nozzle is bolted to one end of a flat coiled spring member 10 which allows the nozzle to be flexed when brought into engagement with the shoe or, when not in use, to be spread open for cleaning. In order that the guard plate 68 may contact with the shoe at just the required point heightwise thereof, a bottom guide plate 12 is adjustably mounted upon the carrier 52 by means of a bolt and slot connection 14 (Fig. 2). This bottom guide 12 rides along the bottom of the shoe, being held there by the spring 53 (Fig. 6). By ajustment of this bottom guide, the wishes of the manufacturer may be met and the position of the line 32 heightwise of the shoe determined. The bottom guide plate 12 has a flange 16 (Figs. 1 and 2) to which the outer end of the spring I0 is secured.

It will be noted that the side 58 of the nozzle is beveled at 18, providing a thin edge so that as the nozzle is supported in position inclined with respect to the direction of forward movement of the shoe (Fig. 4) it will be dragged over a shoe with a minimum of interference and the outlet opening 80 brought as close as is possible to the shoe itself.

In the use of the machine, the operator will present a shoe to the jack in which, upon depression of a treadle, not shown, the shoe will be located and gripped and will start in motion mechanism which will ultimately cause rotation of the pinion It to impart a traversing movement to the jacked shoe composed of straight line and swinging movements which will carry successive portions of the fo-xing area of the shoe past the cement applyingtool 34. Just before the jack starts to move, the arm 40 carrying the tool is moved inwardly and upwardly toward the side and bottom of the shoe bringing the guard plate 68 against the side of the shoe and the bottom guide '12 against the bottom of the shoe. As in the machine disclosed in my application, these movements are controlled by cams (not shown) until the tool contacts with the shoe, after which the tool is held resiliently in contact with the shoe by the springs 49 and 53 (Fig. 6). The position of the nozzle is such that it is inclined toward the shoe in the direction of movement of the portion of the shoe to be treated and the flat coiled spring Til facilitates the flexing of the nozzle to wrap it around the corner of the shoe. During movement of the shoe past the tool, cement flowing at low pressure from the nozzle opening 89 is applied directly to the foxing area and to the bottom of the shoe adjacent thereto until the whole periphery of the shoe has been treated. Any surplus cement falls into a receptacle (not shown). Movement of the shoe then ceases, the tool is automatically withdrawn from the shoe and the shoe is released from the jack.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a foxing cementing machine, a nozzle formed of flexible material and having an elongated outlet opening, and means for supporting the outlet portion of the nozzle and engaging said nozzle at the ends only of the outlet opening.

2. In a coating-applying device, a nozzle having flexible sides defining a normally open, elongated outlet opening, said sides and opening being capable of distortion to allow the middle and ends of the outlet opening to be brought into proximity with the convex surface of an article to be coated, and means for preventing closure of the opening by reason of such distortion.

3. In a coating-applying device, a nozzle having flexible sides defining an elongated outlet opening, and means for supporting said nozzle comprising movable means attached to the nozzle adjacent to one end of the opening thereby permitting the edges of the nozzle to be pressed toward one another to separate the sides of the nozzle by distortion thereof thereby to spread the outlet opening for cleaning.

4. In a foxing cementing machine, a shoe support, a flexible nozzle for applying cement and having an elongated outlet opening, means attached to said nozzle near the ends of said outlet opening for supporting said nozzle, at least one of said means being yieldable, and a swinging arm carrying said supporting means and constructed and. arranged to carry the outlet end of the nozzle into engagement with the peripheral corner of a shoe on the support and to wrap the shoe-engaging portion of the nozzle around said corner.

5. In a foxing cementing machine, a nozzle formed of flexible material and having an elongated outlet opening, and means for supporting the outlet portion of the nozzle and engaging said nozzle at the ends only of the outlet opening, said means including a yieldable member attached to the nozzle at one end of the opening.

6. In a coating-applying device, a nozzle having flexible sides defining an elongated outlet opening, and spaced means for supporting said nozzle by engagement therewith adjacent to the ends of the outlet opening, said means being constructed and arranged to allow the outlet end of the nozzle to yield when one of the sides is pressed into engagement with the corner of a shoe thereby to wrap the flexible sides around said corner.

7. In a coating-applying device, a flexible nozzle provided with an elongated outlet opening, a support for said nozzle secured thereto near one end of said opening, and yieldable means interposed between said support and said nozzle adjacent to the other end of the opening thereby to permit the outlet end of the nozzle to be wrapped around the corner of a shoe.

8. In a foxing cementing machine, a nozzle with flexible sides, and a support to hold said nozzle in engagement with theperipheral corner of a shoe comprising a guard plate contacting with the shoe at the upper edge of the foxing area and resilient means interposed between said support and said nozzle adjacent to one end of the outlet opening.

9. In a foxing cementing machine, a shoe support, a nozzle with flexible sides defining an the nozzle adjacent to that end of the opening which coats the upper part of the icxing area and resiliently adjacent to the other end of said opening.

10. In a foxing cementing machine, a nozzle formed of flexible material and having an elongated outlet opening, there being projections from the inner face of one wall of the opening, said projections being spaced from one another along the opening and extending toward the opposite wall.

11. In a coating-applying device, a flexible nozzle provided with an elongated outlet opening, an interior surface of said nozzle being provided with spacing ridges between the sides of the nozzle to separate them thereby to prevent a collapse of the outlet portion of the nozzle as. the latter is wrapped around the corner of a shoe.

12. In a coating-applying device, a flexible nozzle having a flaring end and provided with an elongated outlet opening, said nozzle being provided with separated spacing ridges between the sides of the nozzle and extending away from the nozzle opening thereby to prevent collapse of the outlet portion of the nozzle as the latter is wrapped around the corner of a shoe, the ridges being longer at the center than at the edges.

13. In a coating-applying device, a rubber nozzle having flexible sides defining an elongated outlet opening, that side of the nozzle which is adapted to be brought into contact with a shoe being beveled to provide a. thin edge, and spacing ridges between the sides to prevent collapse of the nozzle.

14. In a coating-applying device, a rubber nozzle having an elongated outlet opening between flexible sides, one side of the nozzle being provided, within the outlet opening, with spacing ridges secured only to said side whereby said nozzle may be distorted to spread open the outlet opening to facilitate cleaning thereof.

15. In a foxing cementing machine, a movable shoe support, a nozzle having an outlet the outer face of one side of which is beveled to a thin edge, means for moving said shoe support to carry a shoe thereon past the nozzle with the latter dragging along the peripheral corner of the shoe, a support for said nozzle holding the latter tilted in the direction of movement of the face of the shoe to be coated to bring the beveled edge substantially fiat against the shoe, and means for supplying coating material to said nozzle.

16. In a coating-applying device, a flexible nozzle having an elongated outlet opening between flexible sides, said nozzle having tabs secured thereto adjacent to the ends of the outlet opening, a nozzle support, and connections between said tabs and the nozzle support.

17. In a coating-applying device, a flexible nozzle having an elongated outlet opening between flexible sides, said nozzle having tabs secured thereto adjacent to the ends of the outlet opening, a nozzle support, and connections, one of which is resilient, between said tabs and the nozzle support.

18. In a foxing cementing machine, a nozzle of flexible material having an elongated outlet opening which may be distorted by engagement with the work, means for supporting said nozzle in engagement with the peripheral corner of a shoe comprising a guard plate adjacent to one end 01"" the nozzle opening contacting with the side of the shoe at the upper edge of the foxing area, and a shoe-bottom-engaging member on the nozzle support thereby to determine the point of engagement of the guard with the side of the shoe heightwise thereof.-

19. In a foxing cementing machine, a flexible nozzle, a support for said nozzle to hold it in engagement with the peripheral corner of a shoe, a guard plate on the support adjacent to one end of the nozzle opening contacting with the shoe at the upper edge of the foxing area, a shoe-bottom-engaging member on the support, and a resilient member interposed between said bottom-engaging member and the adjacent portion of the nozzle to tension the nozzle.

20. In a foxing cementing machine, a flexible nozzle, a shoe support, means for moving said shoe support to cause the foxing area of the shoe to traverse the nozzle, a swinging arm for supporting said nozzle, said arm having a guide member for contact with the shoe adjacent to the upper edge of the foxing area and a bottom guide member, means for attaching said nozzle firmly to said arm adjacent to said first guide member, resilient means for attaching the other edge of the nozzle to the arm adjacent to the bottom guide member, and resilient means for swinging said arm to hold said guide members in engagement with the shoe during traversing movements of the latter whereby the portion of the nozzle adjacent to the outlet thereof will be flexed and Wrapped around the peripheral corner of the shoe.

ERNEST W. STACEY.

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